WO2025256456A1 - 油冷系统、油冷控制方法和车辆 - Google Patents

油冷系统、油冷控制方法和车辆

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Publication number
WO2025256456A1
WO2025256456A1 PCT/CN2025/099339 CN2025099339W WO2025256456A1 WO 2025256456 A1 WO2025256456 A1 WO 2025256456A1 CN 2025099339 W CN2025099339 W CN 2025099339W WO 2025256456 A1 WO2025256456 A1 WO 2025256456A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
cooling
motor
speed
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/099339
Other languages
English (en)
French (fr)
Inventor
翟震
王文静
张文程
武运峰
徐翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Publication of WO2025256456A1 publication Critical patent/WO2025256456A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
    • F16H57/0441—Arrangements of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium

Definitions

  • This disclosure relates to the field of vehicle technology, and in particular to an oil cooling system, an oil cooling control method, and a vehicle.
  • existing oil cooling systems can only control the motor temperature by controlling the speed of the oil pump and water pump, but cannot distribute the cooling lubricating oil to the electric drive components according to the amount of cooling lubricating oil required by each electric drive component in the oil cooling system. Therefore, it is impossible to achieve precise oil supply and efficient heat dissipation for each electric drive component.
  • one object of this disclosure is to provide an oil cooling system that can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system, thereby achieving precise oil supply and efficient heat dissipation for each electric drive component.
  • the second objective of this disclosure is to provide an electric drive control device.
  • the third objective of this disclosure is to propose an oil cooling control method.
  • the fourth objective of this disclosure is to provide an electronic device.
  • the fifth objective of this disclosure is to propose a vehicle.
  • the sixth objective of this disclosure is to provide a non-volatile readable storage medium.
  • a first aspect of this disclosure provides an oil cooling system, including multiple cooling and lubricating oil circuits for cooling corresponding electric drive components; a first control valve, wherein a first input terminal of the first control valve is adapted to input cooling and lubricating oil, and multiple output terminals of the first control valve are respectively connected to the input terminals of the multiple cooling and lubricating oil circuits for controlling the oil supply of each cooling and lubricating oil circuit.
  • the oil cooling system of this disclosure by controlling the amount of cooling lubricating oil output from each output terminal of the first control valve, the oil supply of the cooling lubricating oil circuit connected to each output terminal is controlled to meet the cooling requirements of each electric drive component, thereby achieving efficient heat dissipation of each electric drive component.
  • the oil cooling system further includes an oil cooler, the output end of which is connected to the first input end of the first control valve for heat exchange between the lubricating oil and the coolant and for outputting the cooled lubricating oil.
  • the oil cooling system further includes a second control valve, the first output of which is connected to the lubricating oil inlet of the oil cooler, and the second output of which is connected to the second input of the first control valve, for controlling the flow path of the cooling lubricating oil.
  • the oil cooling system further includes an oil pump, the output end of which is connected to the input end of the second control valve, the input end of which is adapted to receive cooling lubricating oil, and the oil pump is used to pump the cooling lubricating oil to the second control valve; or the output end of the oil pump is connected to the lubricating oil inlet of the oil cooler, the input end of which is adapted to receive cooling lubricating oil, and the oil pump is used to pump the cooling lubricating oil to the oil cooler.
  • the oil cooling system further includes an oil reservoir, the oil inlet of which is connected to the output end of the cooling lubricating oil circuit, and the oil outlet of which is connected to the input end of the oil pump.
  • the oil reservoir is used to store the cooling lubricating oil output by the cooling lubricating oil circuit.
  • the oil cooling system includes a motor stator cooling and lubrication oil circuit, adapted to be disposed inside the motor stator, for cooling and lubricating the motor stator; a motor rotor cooling and lubrication oil circuit, adapted to be disposed inside the motor rotor, for cooling and lubricating the motor rotor; and a reducer cooling and lubrication oil circuit, adapted to be disposed inside the reducer, for cooling and lubricating the reducer.
  • a second aspect of this disclosure provides an electric drive control device, including the oil cooling system described in the above embodiments; a sensor assembly for collecting the oil temperature of the cooling lubricating oil, the motor temperature, and the motor speed; and a controller connected to the oil cooling system and the sensor assembly, respectively, for controlling the oil cooling system according to the operating conditions of the electric drive system and the oil temperature of the cooling lubricating oil, the motor temperature, and the motor speed.
  • the amount of cooling lubricating oil can be allocated to each drive component according to the cooling requirements of each drive component in the oil cooling system, so as to achieve precise oil supply and efficient heat dissipation for each electric drive component.
  • a third aspect of this disclosure provides an oil cooling control method, comprising: determining the operating conditions of an electric drive system based on operating parameters of the electric drive system; and controlling the opening degree of a first control valve in the oil cooling system corresponding to each cooling lubrication oil circuit based on the operating conditions of the electric drive system and the motor temperature of the electric drive system, so as to control the oil supply of each cooling lubrication oil circuit.
  • the cooling requirements of each electric drive component are determined by the operating conditions and motor temperature. Then, the opening degree of the first control valve corresponding to the output end of each cooling lubrication oil circuit is controlled according to the cooling requirements of each electric drive component, so as to control the oil supply of each cooling lubrication oil circuit.
  • the oil supply of the cooling lubrication oil circuit is dynamically adjusted by the operating conditions and motor temperature, so as to accurately cool and lubricate the electric drive components under different operating conditions, effectively improving the cooling efficiency of the electric drive components.
  • the operating conditions include a first operating condition in which the motor rotor temperature is higher than a first rotor temperature threshold; and a second operating condition in which the motor rotor temperature is lower than a second rotor temperature threshold, wherein the first rotor temperature threshold is greater than or equal to the second rotor temperature threshold.
  • the output end of the corresponding reducer cooling lubrication oil circuit of the first control valve is closed to shut off the oil supply to the reducer cooling lubrication oil circuit.
  • the opening degree of the output terminal of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve is kept constant, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve is reduced; or, when the motor temperature is greater than or equal to the first motor temperature threshold, the opening degree of the output terminal of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve is kept constant, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve is increased.
  • the output end of the corresponding motor rotor cooling lubrication oil circuit of the first control valve is closed to shut off the oil supply of the motor rotor cooling lubrication oil circuit.
  • the opening degree of the output terminal of the corresponding reducer cooling and lubrication oil circuit of the first control valve is kept constant, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve is reduced; or, when the motor temperature is greater than or equal to the second motor temperature threshold, the opening degree of the output terminal of the corresponding reducer cooling and lubrication oil circuit of the first control valve is kept constant, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve is increased.
  • the method further includes: controlling the flow path of the cooling lubricating oil connected to the second control valve in the oil cooling system according to the operating conditions of the electric drive system and the oil temperature of the cooling lubricating oil output from the cooling lubricating oil circuit, so as to control the temperature of the cooling lubricating oil.
  • the first output terminal of the second control valve under the first operating condition, is controlled to be in an open state so that the cooling lubricating oil is input into the oil cooler of the oil cooling system; the second output terminal of the second control valve is controlled to be in a closed state so as to cut off the path of the cooling lubricating oil input to the first control valve.
  • the first output terminal of the second control valve is controlled to be in an open state so that cooling lubricating oil is input into the oil cooler of the oil cooling system, and the second output terminal of the second control valve is controlled to be in a closed state to cut off the path of the cooling lubricating oil input to the first control valve; or, when the oil temperature is less than the oil temperature threshold, the second output terminal of the second control valve is controlled to be in an open state so that cooling lubricating oil is input into the first control valve, and the first output terminal of the second control valve is controlled to be in a closed state to cut off the path of the cooling lubricating oil input to the oil cooler.
  • the speed of the oil pump used to pump cooling lubricating oil to the second control valve in the oil cooling system is controlled according to the operating conditions of the electric drive system, the motor temperature, and the motor speed.
  • the oil pump of the oil cooling system under the first operating condition, is controlled to operate at a first speed; under the second operating condition, when the motor temperature is less than a third motor temperature threshold and the motor speed is less than a first speed threshold, the oil pump is controlled to operate at a second speed, wherein the second speed is less than the first speed.
  • the oil pump under the second operating condition, when the motor temperature is less than a third motor temperature threshold and the motor speed is greater than the first speed threshold and less than the second speed threshold, the oil pump is controlled to operate at a third speed, wherein the first speed > the third speed > the second speed; when the motor temperature is less than the third motor threshold and the motor speed is greater than the second speed threshold, the oil pump is controlled to operate at a fourth speed, wherein the first speed > the fourth speed > the third speed > the second speed.
  • the oil pump under the second operating condition, when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is less than the first speed threshold, the oil pump is controlled to operate at the third speed; when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is greater than the first speed threshold and less than the second speed threshold, the oil pump is controlled to operate at the fourth speed; when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is greater than the second speed threshold, the oil pump is controlled to operate at the first speed.
  • the oil pump under the second operating condition, when the motor temperature is greater than the fourth motor temperature threshold, the oil pump is controlled to operate at the first speed.
  • a fourth aspect of this disclosure provides an electronic device, including: at least one processor; a memory communicatively connected to the at least one processor; the memory storing a computer program executable by the at least one processor, wherein the at least one processor executes the computer program to implement the oil cooling control method described in the above embodiments.
  • the electronic device can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system, thereby achieving precise oil supply and efficient heat dissipation for each electric drive component.
  • a fifth aspect of this disclosure provides a vehicle including the electric drive system and electric drive control device described in the above embodiments.
  • the electric drive control device of the above embodiment can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system, so as to achieve precise oil supply and efficient heat dissipation for each electric drive component.
  • a sixth aspect of this disclosure provides a non-volatile readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the oil cooling control method described in the above embodiments.
  • Figure 1 is a schematic diagram of an oil cooling system according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of an oil cooling control method according to another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of an oil cooling control method according to another embodiment of the present disclosure.
  • Figure 6 is a flowchart of an oil cooling control method according to another embodiment of the present disclosure.
  • Figure 7 is a flowchart of an oil cooling control method according to another embodiment of the present disclosure.
  • Figure 8 is a structural block diagram of an electronic device according to an embodiment of the present disclosure.
  • Figure 9 is a structural block diagram of a vehicle according to an embodiment of the present disclosure.
  • Vehicle 100 Electric drive control unit 90; Oil cooling system 70; Electronic equipment 60; 1. Oil cooler; 2. Cooling and lubricating oil circuit; 3. First control valve; 5. Sensor assembly; 6. Controller; 7. Processor; 8. Memory; 41. Oil reservoir; 2. Second control valve 42; Oil pump; 43; Motor stator cooling and lubrication oil circuit; 21; Motor rotor cooling and lubrication oil circuit; 22; Reducer cooling and lubrication oil circuit; 23.
  • the first aspect of this disclosure provides an oil cooling system.
  • This oil cooling system can allocate a certain amount of cooling lubricating oil to each drive component according to its cooling requirements, thereby achieving precise oil supply and efficient heat dissipation for each electric drive component.
  • the oil cooling system 70 according to an embodiment of the present disclosure is described below with reference to FIG1. As shown in FIG1, the oil cooling system 70 includes: a plurality of cooling lubricating oil passages 2 and a first control valve 3.
  • the system includes multiple cooling and lubricating oil circuits 2, each used for cooling corresponding electric drive components; a first control valve 3, the first input end of which is adapted to input cooling and lubricating oil, and multiple output ends of the first control valve 3 respectively connected to the input ends of multiple cooling and lubricating oil circuits 2, used to control the oil supply of each cooling and lubricating oil circuit 2.
  • this application connects the input ends of multiple cooling lubrication oil circuits 2 to a first control valve 3. Based on this, during the connection between the first input end and each output end of the first control valve 3, the amount of cooling lubrication oil output from each output end of the first control valve 3 is controlled to regulate the oil supply to each cooling lubrication oil circuit 2. In other words, cooling lubrication oil flows from the first input end of the first control valve 3 into the cooling lubrication oil circuit 2 connected to each corresponding output end to cool the electric drive component located in each cooling lubrication oil circuit 2.
  • the amount of cooling lubrication oil output from each output end is controlled according to the cooling requirements of each electric drive component. That is, the opening degree of each output end is controlled based on the cooling requirements of each electric drive component to control the amount of cooling lubrication oil output from each output end. This allows for precise control of the oil supply to each cooling lubrication oil circuit 2 to meet the cooling requirements of each electric drive component, thereby achieving efficient heat dissipation for each electric drive component.
  • the amount of cooling lubricating oil output from each output terminal of the first control valve 3 is controlled, and the oil supply of the cooling lubricating oil circuit 2 connected to each output terminal is controlled to meet the cooling requirements of each electric drive component, thereby achieving efficient heat dissipation of each electric drive component.
  • the oil cooling system 70 further includes a second control valve 42.
  • the first output terminal of the second control valve 42 is connected to the lubricating oil inlet of the oil cooler 1, and the second output terminal of the second control valve 42 is connected to the second input terminal of the first control valve 3, for controlling the flow path of the cooling lubricating oil.
  • the oil cooling system 70 further includes an oil pump 43.
  • the output end of the oil pump 43 is connected to the input end of the second control valve 42, and the input end of the oil pump 43 is adapted to receive cooling lubricating oil.
  • the oil pump 43 is used to pump the cooling lubricating oil to the second control valve 42.
  • the oil cooling system 70 further includes an oil reservoir 41.
  • the oil inlet of the oil reservoir 41 is connected to the output end of the cooling lubrication oil circuit 2, and the oil outlet of the oil reservoir 41 is connected to the input end of the oil pump 43.
  • the oil reservoir 41 is used to store the cooling lubrication oil output from the cooling lubrication oil circuit 2.
  • the oil reservoir 41 pre-stores a certain amount of cooling lubricating oil, which is pumped to the second control valve 42 by the oil pump 43.
  • the second control valve 42 controls the flow path of the cooling lubricating oil. That is, it controls the flow path connecting the second control valve 42 and the oil cooler 1 to be open, so that the cooling lubricating oil and the coolant can exchange heat to reduce the oil temperature; or it controls the flow path connecting the second control valve 42 and the oil cooler 1 to be closed, so that the cooling lubricating oil does not exchange heat with the coolant; or it controls the flow path between the second control valve 42 and the first control valve 3 to be open, so that the cooling lubricating oil flows into the first control valve 3.
  • the cooling lubricating oil flows into the first control valve 3 from the output end of the oil cooler 1 or the second output end of the second control valve 42, if the input end of the first control valve 3 is connected to each output end, the cooling lubricating oil flows into the cooling lubricating oil circuit 2 from each output end, and then flows back to the oil storage tank 41 through the housing oil circuit, thereby realizing the oil circuit circulation.
  • the oil cooling system 70 includes: a motor stator cooling and lubrication oil circuit 21, a motor rotor cooling and lubrication oil circuit 22, and a reducer cooling and lubrication oil circuit 23.
  • the stator cooling and lubrication oil passage 21 is adapted to be located inside the motor stator for cooling and lubrication.
  • the stator cooling and lubrication oil passage 21 lubricates the motor stator and stator bearings.
  • the rotor cooling and lubrication oil passage 22 is adapted to be located inside the motor rotor for cooling and lubrication.
  • the rotor cooling and lubrication oil passage 22 dissipates heat from the rotor core and permanent magnets.
  • the reducer cooling and lubrication oil passage 23 is adapted to be located inside the reducer for cooling and lubrication.
  • the reducer cooling and lubrication oil passage 23 lubricates the reducer gear bearings.
  • the first control valve 3 and the second control valve 42 can be solenoid valves, three-way valves or multi-way valves, and there is no limitation on the latter.
  • a second aspect of this disclosure provides an electric drive control device, as shown in FIG2.
  • the electric drive control device 90 includes: the oil cooling system 70, the sensor assembly 5, and the controller 6 described in the above embodiments.
  • sensor component 5 is used to collect the oil temperature of cooling lubricating oil, motor temperature and motor speed
  • controller 6 is connected to oil cooling system 70 and sensor component 5 respectively, and is used to control oil cooling system 70 according to the operating conditions of electric drive system and oil temperature of cooling lubricating oil, motor temperature and motor speed
  • controller 6 can be a motor controller, which cools the motor controller when the coolant passes through the motor controller.
  • this application controls the oil cooling system 70 based on operating conditions, oil temperature, motor temperature, and motor speed. For example, the oil supply to each cooling lubricating oil path 2 in the oil cooling system 70 is controlled by these factors to meet the cooling and lubrication requirements of the electric drive components, effectively improving their cooling efficiency.
  • the oil temperature can be used to control whether the cooling lubricating oil exchanges heat with the oil cooler to ensure its cooling effect.
  • the electric drive control device 90 can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system, so as to achieve precise oil supply and efficient heat dissipation for each electric drive component.
  • the third aspect of this disclosure provides an oil cooling control method applied to the oil cooling system 70 of the above embodiment, as shown in FIG3.
  • the control method includes steps S1-S2.
  • Step S1 Determine the operating conditions of the electric drive system based on its operating parameters.
  • operating parameters can be understood as the parameters of the electric drive system during operation.
  • Operating parameters can include the operating current, voltage, temperature and output power of the electric drive system.
  • the operating condition of the electric drive system can be determined as low temperature condition or high temperature condition based on the temperature of the electric drive system.
  • Step S2 Based on the operating conditions of the electric drive system and the motor temperature of the electric drive system, control the opening degree of the first control valve in the oil cooling system corresponding to each cooling and lubrication oil circuit, so as to control the oil supply of each cooling and lubrication oil circuit.
  • the cooling requirements of electric drive components vary depending on the operating conditions of the electric drive system, and higher motor temperatures mean greater cooling demands. Therefore, this application determines the cooling requirements of each electric drive component based on the operating conditions and motor temperature.
  • the opening of the first control valve connected to each cooling and lubrication oil circuit is then controlled according to the cooling requirements of each component, thereby controlling the oil supply to each cooling and lubrication oil circuit. For example, the opening value of the first control valve connected to the corresponding output terminal of each cooling and lubrication oil circuit is set according to the cooling requirements of the electric drive component. If the electric drive component is a motor rotor, and the operating condition is one where the motor rotor temperature is high, the cooling demand of the motor rotor is greater.
  • the opening value of the first control valve connected to the corresponding cooling and lubrication oil circuit of the motor rotor is controlled to be a larger value, or the opening value is controlled to be...
  • the opening degree of the first control valve corresponding to the output end of the motor rotor cooling lubrication oil circuit is increased to control the increase of the oil supply to the motor rotor cooling lubrication oil circuit, thereby improving the heat dissipation capacity of the motor rotor cooling lubrication oil circuit for the motor rotor.
  • the opening degree of the first control valve corresponding to the output end of the motor rotor cooling lubrication oil circuit or the output end of the motor stator cooling lubrication oil circuit is controlled to a larger value; or the opening degree of the first control valve corresponding to the output end of the motor rotor cooling lubrication oil circuit or the output end of the motor stator cooling lubrication oil circuit is increased to improve the heat dissipation capacity of the cooling lubrication oil circuit for the motor.
  • this application determines the cooling demand of each electric drive component by controlling the operating conditions and motor temperature, and controls the oil supply of the corresponding cooling lubrication oil circuit in combination with the cooling demand of the electric drive component to meet the cooling demand of each electric drive component and improve the cooling efficiency of the electric drive component.
  • the cooling requirements of each electric drive component are determined by the operating conditions and motor temperature. Then, the opening degree of the first control valve corresponding to the output end of each cooling lubrication oil circuit is controlled according to the cooling requirements of each electric drive component, so as to control the oil supply of each cooling lubrication oil circuit.
  • the oil supply of the cooling lubrication oil circuit is dynamically adjusted by the operating conditions and motor temperature, so as to accurately cool and lubricate the electric drive components under different operating conditions, effectively improving the cooling efficiency of the electric drive components.
  • the operating conditions include a first operating condition, in which the motor rotor temperature is higher than a first rotor temperature threshold, wherein the first rotor temperature threshold can be understood as a preset temperature threshold based on the high rotor heat generation; and a second operating condition, in which the motor rotor temperature is lower than a second rotor temperature threshold, wherein the second rotor temperature threshold can be understood as a preset temperature threshold based on the low rotor heat generation, and the first rotor temperature threshold is greater than or equal to the second rotor temperature threshold.
  • the first operating condition can be a parking operating condition
  • the second operating condition can be a driving operating condition.
  • the output end of the corresponding reducer cooling lubrication oil circuit of the first control valve is closed to shut off the oil supply to the reducer cooling lubrication oil circuit.
  • the oil supply of the motor rotor cooling lubrication circuit can be increased by closing the reducer cooling lubrication circuit, and the output end of the corresponding reducer cooling lubrication circuit of the first control valve can be closed to shut off the oil supply of the reducer cooling lubrication circuit.
  • the oil supply of the cooling lubrication circuit is dynamically adjusted by the operating condition, so as to accurately cool and lubricate the electric drive components under different operating conditions, avoiding the problem of motor overheating caused by excessive reducer oil and insufficient motor oil.
  • the opening degree of the output terminal of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve remains unchanged, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve decreases; or, when the motor temperature is greater than or equal to the first motor temperature threshold, the opening degree of the output terminal of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve remains unchanged, and the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve increases.
  • the first motor temperature threshold can be understood as the critical value at which the motor temperature is normal under the first operating condition.
  • the motor temperature is determined to be lower than the first motor temperature threshold, the motor temperature is low. Therefore, the cooling demand of the motor stator, i.e., the required oil supply, is also reduced accordingly.
  • the first operating condition will result in a relatively high motor rotor temperature. Based on this, in order to ensure that the cooling lubrication oil can fully cool the motor rotor, the oil supply to the motor rotor cooling lubrication circuit can be increased by minimizing the oil supply to the motor stator cooling lubrication circuit, while the opening of the corresponding motor rotor cooling lubrication circuit output of the first control valve remains unchanged.
  • the opening of the output terminal of the corresponding motor rotor cooling lubrication oil circuit of the first control valve is controlled to be the maximum opening value or the original larger opening value to ensure that there is sufficient cooling lubrication oil to cool the motor rotor and meet the temperature regulation requirements of the motor rotor.
  • the opening of the output terminal of the corresponding motor stator cooling lubrication oil circuit of the first control valve is controlled to decrease to increase the oil supply of the motor rotor cooling lubrication oil circuit.
  • the cooling requirement of the motor stator i.e., the required oil supply, also increases accordingly.
  • the first operating condition will result in a relatively high motor rotor temperature. Therefore, the opening of the output terminal of the corresponding motor rotor cooling lubrication oil circuit of the first control valve is kept unchanged to ensure that there is sufficient cooling lubrication oil to cool the motor rotor and meet the temperature regulation requirements of the motor rotor. At the same time, the opening of the output terminal of the corresponding motor stator cooling lubrication oil circuit of the first control valve is controlled to increase to increase the oil supply of the motor stator cooling lubrication oil circuit, thereby meeting the cooling requirements of the motor stator. Therefore, this application combines the operating conditions to accurately supply oil to each electric drive component, avoiding the problem of motor overheating caused by excessive oil in the reducer and insufficient oil in the motor, and improving the heat dissipation efficiency of the electric drive components.
  • the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve decreases, the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve can be reduced to the minimum opening degree value or other smaller preset opening degree value, without limitation; and when the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve increases, the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve can be increased to the maximum opening degree value or other larger preset opening degree value, without limitation.
  • the output end of the corresponding motor rotor cooling lubrication oil circuit of the first control valve is closed to shut off the oil supply to the motor rotor cooling lubrication oil circuit; under the second operating condition, when the motor temperature is less than the second motor temperature threshold, the opening degree of the output end of the corresponding reducer cooling lubrication oil circuit of the first control valve remains unchanged, and the opening degree of the output end of the corresponding motor stator cooling lubrication oil circuit of the first control valve decreases; or, when the motor temperature is greater than or equal to the second motor temperature threshold, the opening degree of the output end of the corresponding reducer cooling lubrication oil circuit of the first control valve remains unchanged, and the opening degree of the output end of the corresponding motor stator cooling lubrication oil circuit of the first control valve increases.
  • the second motor temperature threshold can be understood as the critical value at which the motor temperature is normal under the second operating condition.
  • the operating condition of the electric drive system is determined to be the second operating condition, and the motor rotor temperature is low under this condition, then cooling of the motor rotor is not required.
  • the output terminal of the corresponding motor rotor cooling lubrication circuit of the first control valve is closed to shut off the oil supply to the motor rotor cooling lubrication circuit, thereby stopping the supply of cooling lubrication oil to the motor rotor.
  • the oil supply to the motor stator cooling lubrication circuit is adjusted according to the motor temperature to meet the cooling requirements of the motor stator.
  • the opening of the output terminal of the corresponding reducer cooling lubrication circuit of the first control valve remains unchanged.
  • the opening degree of the output terminal of the corresponding reducer cooling and lubrication oil circuit of the first control valve is set to the maximum opening value, the original opening value, or another preset opening value with a larger opening degree, without restriction.
  • the opening degree of the output terminal of the corresponding motor stator cooling and lubrication oil circuit of the first control valve is reduced to provide less oil supply to the motor stator cooling and lubrication oil circuit to match the temperature regulation requirements of the motor stator.
  • the motor temperature is greater than or equal to the second motor temperature threshold, the motor temperature is high, therefore, the cooling requirement for the motor stator, i.e., the required oil supply, is also increased accordingly.
  • this application increases the amount of cooling and lubricating oil in the motor stator cooling and lubrication oil circuit by closing the motor rotor cooling and lubrication oil circuit, avoiding the problem of motor overheating caused by excessive reducer oil and insufficient motor oil, and improving the power density of the electric drive.
  • the flow path of the cooling lubricating oil connected to the second control valve in the oil cooling system is controlled according to the operating conditions of the electric drive system and the oil temperature of the cooling lubricating oil output from the cooling lubricating oil circuit, so as to control the temperature of the cooling lubricating oil.
  • the operating conditions of the electric drive system affect the temperature of the motor rotor, and higher rotor temperatures lead to greater cooling demands. Furthermore, the temperature of the cooling lubricating oil influences its cooling effect, with higher temperatures resulting in poorer cooling performance. Therefore, this application controls the flow path of the cooling lubricating oil connected to the second control valve by adjusting the operating conditions and the output temperature of the cooling lubricating oil circuit, thereby controlling the lubricating oil temperature.
  • the flow path connecting the second control valve and the oil cooler is opened, allowing heat exchange between the cooling lubricating oil and the coolant, thus reducing the lubricating oil temperature and improving its cooling effect.
  • the operating condition is one where the motor rotor temperature is low, or the cooling lubricating oil temperature is low, the flow path connecting the second control valve and the oil cooler is closed, preventing heat exchange between the cooling lubricating oil and the coolant.
  • the first output terminal of the second control valve under a first operating condition, is controlled to be in an open state so that cooling lubricating oil is input into the oil cooler of the oil cooling system; the second output terminal of the second control valve is controlled to be in a closed state so as to cut off the path of cooling lubricating oil input to the first control valve.
  • the motor rotor temperature is high.
  • the first output terminal of the second control valve is opened to allow the cooling lubricating oil to enter the oil cooler of the oil cooling system.
  • the second output terminal of the second control valve is closed to cut off the path of cooling lubricating oil to the first control valve. This controls the cooling lubricating oil to exchange heat with the coolant in the oil cooler to lower its temperature. Then, the cooling lubricating oil is controlled to enter the first control valve and subsequent cooling lubricating oil circuits to cool and lubricate the various electric drive components.
  • this application improves the cooling effect of the cooling lubricating oil under different operating conditions by controlling the oil cooler according to the operating conditions.
  • the first output terminal of the second control valve is controlled to be in the open state so that cooling lubricating oil is input into the oil cooler of the oil cooling system, and the second output terminal of the second control valve is controlled to be in the closed state to cut off the path of cooling lubricating oil input to the first control valve; or, when the oil temperature is less than the oil temperature threshold, the second output terminal of the second control valve is controlled to be in the open state so that cooling lubricating oil is input into the first control valve, and the first output terminal of the second control valve is controlled to be in the closed state to cut off the path of cooling lubricating oil input to the oil cooler.
  • the motor rotor temperature is lower. At this time, there is no need to lower the temperature of the cooling lubricating oil to cool the motor rotor. Then, the cooling lubricating oil is used to determine whether it needs to be cooled based on the oil temperature. If the oil temperature is determined to be greater than or equal to the oil temperature threshold, it indicates that the cooling effect of the lubricating oil is poor. In this case, the first output of the second control valve is in the open state to allow the lubricating oil to be input into the oil cooler of the oil cooling system, and the second output of the second control valve is in the closed state to cut off the path of the lubricating oil input to the first control valve.
  • the lubricating oil is controlled to exchange heat with the coolant in the oil cooler to reduce the oil temperature. Then, the lubricating oil is controlled to enter the first control valve and subsequent lubricating oil circuits to cool and lubricate each electric drive component.
  • the oil temperature is determined to be less than the oil temperature threshold, it indicates that the cooling effect of the lubricating oil is good.
  • the second output of the second control valve is in the open state to allow the lubricating oil to be input into the first control valve, and the first output of the second control valve is in the closed state to cut off the path of the lubricating oil input to the oil cooler.
  • the lubricating oil is no longer controlled to exchange heat with the coolant in the oil cooler, but instead, the lubricating oil is directly controlled to enter the first control valve and subsequent lubricating oil circuits to cool and lubricate each electric drive component. Therefore, this application controls the cooling of the lubricating oil by controlling the operating conditions of the oil cooler, thereby improving the cooling effect of the lubricating oil under different operating conditions.
  • the speed of the oil pump used to pump cooling lubricating oil to the second control valve in the oil cooling system is controlled according to the operating conditions of the electric drive system, the motor temperature, and the motor speed.
  • the operating conditions of the electric drive system vary, resulting in different rotor temperatures for the motor. Higher rotor temperatures lead to greater cooling demands, requiring the oil pump to operate at higher speeds to deliver more cooling and lubricating oil. Since higher motor temperatures and speeds both necessitate more cooling and lubricating oil for cooling and lubrication, this application determines the required amount of cooling and lubricating oil based on operating conditions, motor temperature, and motor speed. The oil pump speed is then controlled according to this demand to drive the cooling and lubricating oil to the second control valve, providing the appropriate amount of oil for lubrication and cooling while simultaneously reducing pump energy consumption and improving pump efficiency.
  • the oil pump of the oil cooling system under a first operating condition, is controlled to run at a first speed; under a second operating condition, when the motor temperature is less than a third motor temperature threshold and the motor speed is less than a first speed threshold, the oil pump is controlled to run at a second speed, wherein the second speed is less than the first speed.
  • the motor temperature threshold is a critical value of a pre-set motor temperature range
  • the speed threshold is a critical value of a pre-set motor speed range used to determine the motor lubrication requirements.
  • the motor rotor temperature is high, so the oil pump of the oil cooling system is controlled to run at the first speed, that is, the oil pump is controlled to run at a high speed to increase the speed at which the oil pump delivers lubricating oil, thereby increasing the amount of cooling lubricating oil flowing into the cooling lubricating oil circuit, so as to ensure that the motor rotor can be adequately cooled under the first operating condition. Since the higher the motor rotor temperature and the higher the motor temperature, the more cooling lubricating oil is needed to cool and lower the motor temperature. And the operating conditions of the electric drive system are different, the motor rotor temperature is also different, and the higher the motor speed, the more cooling lubricating oil is needed to lubricate the motor.
  • this application controls the oil pump speed according to the operating conditions of the electric drive system, motor temperature, and motor speed. If the operating condition of the electric drive system is determined to be the second operating condition, it indicates that the motor rotor temperature is low. However, the motor rotor temperature cannot reflect the overall motor temperature, so it is necessary to determine the magnitude of the motor temperature. If the motor temperature is determined to be less than the third motor temperature threshold, the amount of cooling lubricating oil required for motor cooling is less. Similarly, if the motor speed is determined to be less than the first speed threshold, it indicates that the amount of cooling lubricating oil required for lubrication of the motor stator bearings and reducer gear bearings is less.
  • the oil pump is controlled to operate at the second speed, i.e., at a lower speed, to provide the appropriate amount of cooling lubricating oil for lubrication and cooling of the motor.
  • this application dynamically adjusts the oil supply of the cooling lubricating oil circuit by adjusting the operating conditions and motor speed, thereby achieving precise cooling and lubrication of the electric drive components under different operating conditions, while also reducing oil pump energy consumption and improving oil pump efficiency.
  • the oil pump under the second operating condition, when the motor temperature is less than the third motor temperature threshold and the motor speed is greater than the first speed threshold and less than the second speed threshold, the oil pump is controlled to operate at the third speed, wherein the first speed > the third speed > the second speed; when the motor temperature is less than the third motor threshold and the motor speed is greater than the second speed threshold, the oil pump is controlled to operate at the fourth speed, wherein the first speed > the fourth speed > the third speed > the second speed.
  • the oil pump speed is controlled based on the operating conditions of the electric drive system, the motor temperature, and the motor speed. If the operating condition of the electric drive system is determined to be the second operating condition, it indicates that the motor rotor temperature is low. However, the temperature of the motor rotor cannot reflect the overall temperature of the motor, so it is still necessary to determine the magnitude of the motor temperature.
  • the oil pump is controlled to operate at the second speed, i.e., at a lower speed, to provide the appropriate amount of cooling lubricating oil for lubrication and cooling of the motor.
  • the motor speed is greater than the first speed threshold but less than the second speed threshold, it indicates a higher amount of cooling lubricating oil is needed for lubrication of the motor stator bearings and reducer gear bearings, so the oil pump is controlled to operate at the third speed, i.e., at a higher speed, to provide the appropriate amount of cooling lubricating oil for lubrication and cooling of the motor.
  • the motor speed is determined to be greater than the second speed threshold when the motor temperature is below the third motor threshold, it indicates a high amount of cooling lubricating oil is needed for lubrication of the motor stator bearings and reducer gear bearings, so the oil pump is controlled to operate at the fourth speed, i.e., at a high speed, to provide the appropriate amount of cooling lubricating oil for lubrication and cooling of the motor. Therefore, this application dynamically adjusts the oil supply of the cooling and lubrication circuit according to the operating conditions and motor speed, thereby accurately cooling and lubricating the electric drive components under different operating conditions, while also reducing the energy consumption of the oil pump and improving the efficiency of the oil pump.
  • the oil pump under the second operating condition, when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is less than the first speed threshold, the oil pump is controlled to operate at the third speed; when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is greater than the first speed threshold and less than the second speed threshold, the oil pump is controlled to operate at the fourth speed; when the motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold, and the motor speed is greater than the second speed threshold, the oil pump is controlled to operate at the first speed.
  • the oil pump speed is controlled based on the operating conditions of the electric drive system, the motor temperature, and the motor speed. If the operating condition of the electric drive system is determined to be the second operating condition, it indicates that the motor rotor temperature is low. However, the motor rotor temperature cannot reflect the overall motor temperature, so it is still necessary to determine the magnitude of the motor temperature. If the motor temperature is determined to be greater than the third motor temperature threshold and less than the fourth motor temperature threshold, then the amount of cooling lubricating oil required for motor cooling is relatively high. If the motor speed is determined to be less than the first speed threshold, then the amount of cooling lubricating oil required for the motor stator bearings and reducer gear bearings is relatively low.
  • the oil pump is controlled to operate at the third speed, i.e., at a lower speed, to provide the necessary amount of cooling lubricating oil for motor lubrication and cooling.
  • the motor speed is determined to be greater than the first speed threshold and less than the second speed threshold, then the amount of cooling lubricating oil required for the motor stator bearings and reducer gear bearings is relatively high.
  • the oil pump is controlled to operate at the fourth speed, i.e., at a higher speed, to provide the necessary amount of cooling lubricating oil for motor lubrication and cooling.
  • the oil pump is controlled to operate at the first speed, i.e., at a high speed, to provide the necessary amount of cooling lubricating oil for motor lubrication and cooling. Therefore, this application dynamically adjusts the oil supply of the cooling and lubrication circuit according to the operating conditions and motor speed, thereby accurately cooling and lubricating the electric drive components under different operating conditions, while also reducing the energy consumption of the oil pump and improving the efficiency of the oil pump.
  • the oil pump is controlled to run at the first speed, that is, the oil pump is controlled to run at a high speed, so as to increase the speed at which the oil pump delivers cooling lubricating oil, thereby increasing the amount of cooling lubricating oil flowing into the cooling lubricating oil circuit, so as to ensure that the motor can be sufficiently cooled under the second operating condition.
  • Step S3 The motor controller determines the operating conditions of the electric drive system, including the first operating condition and the second operating condition.
  • Step S4 Determine the required oil supply for each electric drive component under operating conditions, that is, control the oil supply of the motor stator cooling lubrication circuit, the motor rotor cooling lubrication circuit, and the reducer cooling lubrication circuit under operating conditions.
  • Step S5 The motor controller obtains the oil temperature of the cooling lubricating oil, the motor temperature of the electric drive system, and the motor speed.
  • Step S6 Control the working state of the first control valve and the second control valve according to the operating conditions, oil temperature and motor temperature, and control the speed of the oil pump according to the operating conditions, motor temperature and motor speed.
  • Step S3 The motor controller determines the operating condition of the electric drive system and executes steps S7 and S9.
  • Step S7 If the operating condition is the first operating condition, proceed to step S8.
  • step S8 the second control valve is in a state where the first output terminal is open and the second output terminal is closed, so as to open the first oil circuit formed between the control oil pump and the oil cooler, so that the cooling lubricating oil is input into the oil cooler, and close the second oil circuit formed between the oil pump and the first control valve, that is, to cut off the path of cooling lubricating oil input to the first control valve.
  • Step S9 If the operating condition is the second operating condition, proceed to step S10.
  • step S10 the motor controller obtains the temperature of the cooling lubricating oil and executes steps S11 and S13.
  • Step S11 If the oil temperature is lower than the oil temperature threshold, proceed to step S12.
  • step S12 the second control valve is in a state where the second output terminal is open and the first output terminal is closed, so as to control the first oil circuit formed between the oil pump and the oil cooler to be closed, that is, to cut off the path of cooling lubricating oil input to the oil cooler, and the second oil circuit formed between the second control valve and the first control valve to be open, so that cooling lubricating oil is input to the first control valve.
  • Step S13 If the oil temperature is greater than or equal to the oil temperature threshold, proceed to step S14.
  • step S14 the second control valve is in a state where the first output terminal is open and the second output terminal is closed, so as to open the first oil circuit formed between the control oil pump and the oil cooler, so that the cooling lubricating oil is input into the oil cooler, and close the second oil circuit formed between the second control valve and the first control valve, that is, to cut off the path of cooling lubricating oil input to the first control valve.
  • Step S3 The motor controller determines the operating condition of the electric drive system and executes steps S7 and S9.
  • Step S7 If the operating condition is the first operating condition, proceed to step S15.
  • Step S9 If the operating condition is the second operating condition, proceed to step S21.
  • Step S15 Shut off the oil supply to the reducer cooling and lubrication circuit.
  • step S16 the motor controller obtains the motor temperature and executes steps S17 and S19.
  • Step S17 The motor temperature is less than the first motor temperature threshold.
  • Step S18 Keep the opening of the output end of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve unchanged, and reduce the opening of the output end of the corresponding motor stator cooling and lubrication oil circuit of the first control valve.
  • Step S19 The motor temperature is greater than or equal to the first motor temperature threshold.
  • step S20 the opening degree of the output end of the corresponding motor rotor cooling and lubrication oil circuit of the first control valve remains unchanged, and the opening degree of the output end of the corresponding motor stator cooling and lubrication oil circuit of the first control valve increases.
  • Step S21 Close the motor rotor cooling and lubrication oil circuit.
  • step S22 the motor controller obtains the motor temperature and executes steps S23 and S25.
  • Step S23 The motor temperature is less than the second motor temperature threshold.
  • Step S24 Keep the opening of the output end of the corresponding reducer cooling and lubrication oil circuit of the first control valve unchanged, and reduce the opening of the output end of the corresponding motor stator cooling and lubrication oil circuit of the first control valve.
  • Step S25 The motor temperature is greater than or equal to the second motor temperature threshold.
  • Step S26 Keep the opening of the output end of the corresponding reducer cooling and lubrication oil circuit of the first control valve unchanged, and increase the opening of the output end of the corresponding motor stator cooling and lubrication oil circuit of the first control valve.
  • Step S3 The motor controller determines the operating condition of the electric drive system and executes steps S7 and S9.
  • Step S7 If the operating condition is the first operating condition, proceed to step S27.
  • Step S9 If the operating condition is the second operating condition, proceed to step S28.
  • step S27 the oil pump of the oil cooling system operates at the first speed.
  • step S28 the motor controller obtains the motor temperature and executes steps S29, S37, and S45.
  • Step S29 The motor temperature is less than the third motor temperature threshold.
  • step S30 the motor controller obtains the motor speed and executes steps S31, S33, and S35.
  • Step S31 The motor speed is less than the first speed threshold.
  • Step S32 Control the oil pump to run at the second speed.
  • Step S33 The motor speed is greater than the first speed threshold and less than the second speed threshold.
  • Step S34 Control the oil pump to run at the third speed.
  • Step S35 The motor speed is greater than the second speed threshold.
  • Step S36 Control the oil pump to run at the fourth speed.
  • Step S37 The motor temperature is greater than the third motor temperature threshold and less than the fourth motor temperature threshold.
  • step S38 the motor controller obtains the motor speed and executes steps S39, S41, and S43.
  • Step S39 The motor speed is less than the first speed threshold.
  • Step S40 Control the oil pump to run at the third speed.
  • Step S41 The motor speed is greater than the first speed threshold and less than the second speed threshold.
  • Step S42 Control the oil pump to run at the fourth speed.
  • Step S43 The motor speed is greater than the second speed threshold.
  • Step S44 Control the oil pump to run at the first speed.
  • Step S45 The motor temperature is greater than the fourth motor temperature threshold.
  • Step S46 Control the oil pump to run at the first speed.
  • a fourth aspect of this disclosure provides an electronic device 60, as shown in FIG8, which includes at least one processor 7 and a memory 8 communicatively connected to the at least one processor 7.
  • the memory 8 stores a computer program that can be executed by at least one processor 7.
  • the at least one processor 7 executes the computer program, it implements the oil cooling control method of the above embodiment.
  • the electronic device 60 by executing the oil cooling control method of the above embodiments, can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system 70, thereby achieving precise oil supply and efficient heat dissipation for each electric drive component.
  • a fifth aspect of this disclosure provides a vehicle 100, as shown in FIG9, which includes an electric drive system 80 and an electric drive control device 90 as described in the above embodiments.
  • the electric drive system 80 may include a motor, a reducer, etc.
  • the electric drive control device 90 includes an oil cooling system 70, a sensor assembly 5, and a controller 6, etc.
  • the electric drive control device 90 can lubricate and cool the electric drive system 80 using the methods described in the above embodiments.
  • the electric drive control device 90 of the above embodiment can allocate the amount of cooling lubricating oil to each drive component according to the cooling requirements of each drive component in the oil cooling system 70, so as to achieve precise oil supply and efficient heat dissipation for each electric drive component.
  • a sixth aspect of this disclosure provides a non-volatile readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the oil cooling control method of the above embodiments.
  • any process or method described in the flowcharts or otherwise herein may be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.
  • computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM).
  • the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
  • the functional units in the various embodiments of this disclosure can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module.
  • the integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
  • the storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc.
  • references to terms such as “one embodiment,” “some embodiments,” “illustrative embodiment,” “example,” “specific example,” or “some examples,” etc. refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure.
  • the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

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Abstract

公开了一种车辆，该车辆包括油冷系统。该油冷系统包括多个冷却润滑油路和第一控制阀。该多个冷却润滑油路分别用于对相应的电驱部件进行冷却。该第一控制阀的第一输入端适于输入冷却润滑油，该第一控制阀的多个输出端分别与多个该冷却润滑油路的输入端对应连接，用于控制每个所述冷却润滑油路(2)的供油量。还公开了一种油冷控制方法。

Description

油冷系统、油冷控制方法和车辆
相关申请的交叉引用
本申请要求在2024年6月14日提交至中国国家知识产权局、申请号为202410766636.0、名称为“油冷系统、电驱控制装置、油冷控制方法和车辆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及车辆技术领域，尤其是涉及一种油冷系统、油冷控制方法和车辆。
背景技术
相关技术中，现有油冷系统只能通过油泵和水泵的转速来控制电机的温度，而无法根据油冷系统中各电驱部件所需的冷却润滑油量来对电驱部件分配冷却润滑油，从而无法实现对各电驱部件的精准供油以及高效散热。
公开内容
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开的一个目的在于提出一种油冷系统，采用该油冷系统可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开的目的之二在于提出一种电驱控制装置。
本公开的目的之三在于提出一种油冷控制方法。
本公开的目的之四在于提出一种电子设备。
本公开的目的之五在于提出一种车辆。
本公开的目的之六在于提出一种非易失性可读存储介质。
为了解决上述问题，本公开第一方面实施例提供一种油冷系统，包括多个冷却润滑油路，分别用于对相用的电驱部件进行冷却；第一控制阀，所述第一控制阀的第一输入端适于输入冷却润滑油，所述第一控制阀的多个输出端分别与多个所述冷却润滑油路的输入端对应连接，用于控制每个所述冷却润滑油路的供油量。
根据本公开实施例的油冷系统，通过控制第一控制阀的每个输出端输出的冷却润滑油量，控制与每个输出端连接的冷却润滑油路的供油量，以满足每个电驱部件的冷却需求，从而实现每个电驱部件的高效散热。
在一些实施例中，所述油冷系统还包括油冷器，所述油冷器的输出端与所述第一控制阀的第一输入端连接，用于润滑油与冷却液之间的热交换并输出所述冷却润滑油。
在一些实施例中，所述油冷系统还包括第二控制阀，所述第二控制阀的第一输出端与所述油冷器的润滑油输入口连接，所述第二控制阀的第二输出端与所述第一控制阀的第二输入端连接，用于控制冷却润滑油的流通路径。
在一些实施例中，所述油冷系统还包括油泵，所述油泵的输出端与所述第二控制阀的输入端连接，所述油泵的输入端适于输入冷却润滑油，所述油泵用于将所述冷却润滑油泵送至所述第二控制阀；或者所述油泵的输出端与所述油冷器的润滑油输入口连接，所述油泵的输入端适于输入冷却润滑油，所述油泵用于将所述冷却润滑油泵送至所述油冷器。
在一些实施例中，所述油冷系统还包括储油槽，所述储油槽的进油口与所述冷却润滑油路的输出端连接，所述储油槽的出油口与所述油泵的输入端连接，所述储油槽用于存放所述冷却润滑油路输出的冷却润滑油。
在一些实施例中，所述油冷系统包括电机定子冷却润滑油路，适于设置于电机定子内部，用于对所述电机定子进行冷却和润滑；电机转子冷却润滑油路，适于设置于电机转子内部，用于对所述电机转子进行冷却和润滑；减速器冷却润滑油路，适于设置于减速器内部，用于对所述减速器进行冷却和润滑。
本公开第二方面实施例提供一种电驱控制装置，包括上述实施例所述的油冷系统；传感器组件，用于采集冷却润滑油的油温、电机温度和电机转速；控制器，所述控制器与所述油冷系统和所述传感器组件分别连接，用于根据电驱系统运行工况和所述冷却润滑油的油温、电机温度和电机转速控制所述油冷系统。
根据本公开实施例的电驱控制装置，可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开第三方面实施例提供一种油冷控制方法，包括：根据电驱系统的运行参数确定所述电驱系统的运行工况；根据所述电驱系统的运行工况和所述电驱系统的电机温度控制所述油冷系统中第一控制阀对应每个冷却润滑油路的开度，以控制每个所述冷却润滑油路的供油量。
根据本公开实施例的油冷控制方法，通过运行工况和电机温度确定各电驱部件的冷却需求，从而根据各电驱部件的冷却需求控制第一控制阀对应每个冷却润滑油路输出端的开度，以控制每个冷却润滑油路的供油量，由此，本申请中通过运行工况和电机温度动态调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，有效提高电驱部件的冷却效率。
在一些实施例中，所述运行工况包括第一工况，在所述第一工况下电机转子温度高于第一转子温度阈值；和第二工况，在所述第二工况下所述电机转子温度低于第二转子温度阈值，其中，所述第一转子温度阈值大于或等于所述第二转子温度阈值。
在一些实施例中，在所述第一工况下，控制所述第一控制阀的对应减速器冷却润滑油路的输出端关闭，以关闭所述减速器冷却润滑油路的供油。
在一些实施例中，在所述第一工况下，在所述电机温度小于第一电机温度阈值时，控制所述第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，且控制所述第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小；或者，在所述电机温度大于或等于所述第一电机温度阈值时，控制所述第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，且控制所述第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大。
在一些实施例中，在所述第二工况下，控制所述第一控制阀的对应电机转子冷却润滑油路的输出端关闭，以关闭所述电机转子冷却润滑油路的供油。
在一些实施例中，在所述第二工况下，在所述电机温度小于第二电机温度阈值时，控制所述第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，且控制所述第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小；或者，在所述电机温度大于或等于所述第二电机温度阈值时，控制所述第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，且控制所述第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大。
在一些实施例中，还包括：根据所述电驱系统的运行工况和所述冷却润滑油路输出冷却润滑油的油温控制所述油冷系统中第二控制阀所连通的冷却润滑油的流通路径，以控制所述冷却润滑油的温度。
在一些实施例中，在所述第一工况下，控制所述第二控制阀的第一输出端处于打开状态，以使得所述冷却润滑油输入至所述油冷系统的油冷器中；控制所述第二控制阀的第二输出端处于关闭状态，以切断所述冷却润滑油输入至所述第一控制阀的路径。
在一些实施例中，在所述第二工况下，在所述油温大于或等于油温阈值时，控制所述第二控制阀的第一输出端处于打开状态以使得冷却润滑油输入至所述油冷系统的油冷器中，且控制所述第二控制阀的第二输出端处于关闭状态以切断所述冷却润滑油输入至所述第一控制阀的路径；或者，在所述油温小于所述油温阈值时，控制所述第二控制阀的第二输出端处于打开状态以使得冷却润滑油输入至所述第一控制阀，且控制所述第二控制阀的第一输出端处于关闭状态以切断所述冷却润滑油输入至所述油冷器的路径。
在一些实施例中，根据所述电驱系统的运行工况、所述电机温度和电机转速控制所述油冷系统中用于将冷却润滑油泵送至所述油冷系统中第二控制阀的油泵的转速。
在一些实施例中，在所述第一工况下，控制所述油冷系统的油泵以第一转速运行；在所述第二工况下，在所述电机温度小于第三电机温度阈值以及电机转速小于第一转速阈值时，控制所述油泵以第二转速运行，其中，所述第二转速<所述第一转速。
在一些实施例中，在所述第二工况下，在所述电机温度小于第三电机温度阈值以及所述电机转速大于所述第一转速阈值且小于第二转速阈值时，控制所述油泵以第三转速运行，其中，所述第一转速>所述第三转速>所述第二转速；在所述电机温度小于所述第三电机阈值以及所述电机转速大于所述第二转速阈值时，控制所述油泵以第四转速运行，其中，所述第一转速>所述第四转速>所述第三转速>所述第二转速。
在一些实施例中，在所述第二工况下，在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速小于所述第一转速阈值时，控制所述油泵以所述第三转速运行；在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速大于所述第一转速阈值且小于第二转速阈值时，控制所述油泵以所述第四转速运行；在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速大于所述第二转速阈值时，控制所述油泵以所述第一转速运行。
在一些实施例中，在所述第二工况下，在所述电机温度大于所述第四电机温度阈值时，控制所述油泵以所述第一转速运行。
本公开第四方面实施例提供一种电子设备，包括：至少一个处理器；与所述至少一个处理器通信连接的存储器；所述存储器中存储有可被所述至少一个处理器执行的计算机程序，所述至少一个处理器执行所述计算机程序时实现上述实施例所述的油冷控制方法。
根据本公开实施例的电子设备，通过执行上述实施例的油冷控制方法，可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开第五方面实施例提供一种车辆，包括上述实施例所述的电驱系统和电驱控制装置。
根据本公开实施例的车辆，通过上述实施例的电驱控制装置，可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开第六方面实施例提供一种非易失性可读存储介质，其上存储有计算机程序，其中，所述计算机程序被执行时实现上述实施例所述的油冷控制方法。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开一个实施例的油冷系统的示意图；
图2是根据本公开一个实施例的电驱控制装置的结构框图；
图3是根据本公开一个实施例的油冷控制方法的流程图；
图4是根据本公开另一个实施例的油冷控制方法的流程图；
图5是根据本公开另一个实施例的油冷控制方法的流程图；
图6是根据本公开另一个实施例的油冷控制方法的流程图；
图7是根据本公开另一个实施例的油冷控制方法的流程图；
图8是根据本公开一个实施例的电子设备的结构框图；
图9是根据本公开一个实施例的车辆的结构框图。
附图标记：
车辆100；电驱控制装置90；油冷系统70；电子设备60；
油冷器1；冷却润滑油路2；第一控制阀3；传感器组件5；控制器6；处理器7；存储器8；储油槽41；第二控制阀
42；油泵43；电机定子冷却润滑油路21；电机转子冷却润滑油路22；减速器冷却润滑油路23。
具体实施方式
下面详细描述本公开的实施例，参考附图描述的实施例是示例性的。
为了解决上述问题，本公开第一方面实施例提供一种油冷系统，采用该油冷系统可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
下面参考图1描述根据本公开实施例的油冷系统70，如图1所示，该油冷系统70包括：多个冷却润滑油路2和第一控制阀3。
其中，多个冷却润滑油路2，分别用于相应的电驱部件进行冷却；第一控制阀3，第一控制阀3的第一输入端适于输入冷却润滑油，第一控制阀3的多个输出端分别与多个冷却润滑油路2的输入端对应连接，用于控制每个冷却润滑油路2的供油量。
具体的，为了实现对油冷系统70中各电驱部件的精准供油，本申请中将多个冷却润滑油路2的输入端与第一控制阀3连接。基于此，在第一控制阀3的第一输入端与每个输出端连通过程中，通过控制第一控制阀3的每个输出端输出的冷却润滑油量，以控制每个冷却润滑油路2的供油量，也就是说，冷却润滑油从第一控制阀3的第一输入端流入与每个输出端对应连接的冷却润滑油路2，以对每个冷却润滑油路2所在的电驱部件进行冷却；与此同时，结合每个电驱部件的冷却需求控制每个输出端输出的冷却润滑油量，即通过每个电驱部件的冷却需求控制每个输出端的开度，以控制每个输出端输出的冷却润滑油量，可以精准控制每个冷却润滑油路2的供油量，以满足每个电驱部件的冷却需求，从而实现对每个电驱部件的高效散热。
根据本公开实施例的油冷系统70，通过控制第一控制阀3的每个输出端输出的冷却润滑油量，控制与每个输出端连接的冷却润滑油路2的供油量，以满足每个电驱部件的冷却需求，从而实现每个电驱部件的高效散热。
在一些实施例中，如图1所示，油冷系统还包括70：油冷器1，其中，油冷器1的输出端与第一控制阀3的第一输入端连接，用于冷却润滑油与冷却液之间的热交换并输出冷却润滑油，以带走冷却润滑油的热量。
在一些实施例中，如图1所示，油冷系统70还包括：第二控制阀42。其中，第二控制阀42的第一输出端与油冷器1的润滑油输入口连接，第二控制阀42的第二输出端与第一控制阀3的第二输入端连接，用于控制冷却润滑油的流通路径。
在一些实施例中，如图1所示，油冷系统70还包括：油泵43。其中，油泵43的输出端与第二控制阀42的输入端连接，油泵43的输入端适于输入冷却润滑油，油泵43用于将冷却润滑油泵送至第二控制阀42。
在一些实施例中，如图1所示，油冷系统70还包括：储油槽41。其中，储油槽41的进油口与冷却润滑油路2的输出端连接，储油槽41的出油口与油泵43的输入端连接，储油槽41用于存放冷却润滑油路2输出的冷却润滑油。
具体的，储油槽41预先储存一定量的冷却润滑油，通过油泵43泵送至第二控制阀42，第二控制阀42控制冷却润滑油的流通路径，也就是说，控制第二控制阀42与油冷器1所连通的流通路径导通，以使得冷却润滑油与冷却液进行热交换来降低冷却润滑油的油温；或者控制第二控制阀42与油冷器1所连通的流通路径截止，以控制冷却润滑油不与冷却液之间进行热交换；或者控制第二控制阀42与第一控制阀3之间的流通路径导通，以控制冷却润滑油流入第一控制阀3。
在冷却润滑油从油冷器1的输出端或第二控制阀42的第二输出端流入第一控制阀3后，若第一控制阀3的输入端与每个输出端连通，则冷却润滑油从每个输出端流入冷却润滑油路2，再通过壳体油路流回储油槽41，由此实现油路循环。
在一些实施例中，如图1所示，油冷系统70包括：电机定子冷却润滑油路21、电机转子冷却润滑油路22和减速器冷却润滑油路23。
其中，电机定子冷却润滑油路21，适于设置于电机定子内部，用于对电机定子进行冷却和润滑。例如，电机定子冷却润滑油路21对电机定子以及定子轴承进行润滑；电机转子冷却润滑油路22，适于设置于电机转子内部，用于对电机转子进行冷却和润滑，例如，电机转子冷却润滑油路22对转子铁芯及永磁体进行散热；减速器冷却润滑油路23，适于设置于减速器内部，用于对减速器进行冷却和润滑，例如，减速器冷却润滑油路23对减速器齿轮轴承进行润滑。
在实施例中，第一控制阀3和第二控制阀42可以为电磁阀、三通阀或多通阀，对此不作限制。
本公开第二方面实施例提供一种电驱控制装置，如图2所示，该电驱控制装置90包括：上述实施例的油冷系统70、传感器组件5和控制器6。
其中，传感器组件5，用于采集冷却润滑油的油温、电机温度和电机转速；控制器6与油冷系统70和传感器组件5分别连接，用于根据电驱系统运行工况和冷却润滑油的油温、电机温度和电机转速控制油冷系统70；控制器6可以为电机控制器，在冷却液通过电机控制器时对电机控制器进行冷却。
具体的，由于电驱系统的运行工况不同，电驱部件的冷却需求不同，且电机温度越高则意味着电机的冷却需求越大，以及冷却润滑油的油温会影响冷却润滑油的冷却效果，而且油温越高冷却润滑油的冷却效果越差，以及电机转速越高意味着电机需要更多冷却润滑油量来对电机进行润滑。基于此，本申请中通过运行工况、油温、电机温度和电机转速控制油冷系统70。例如，通过运行工况、电机温度和电机转速控制油冷系统70中每个冷却润滑油路2的供油量，以满足电驱部件的冷却需求和润滑需求，有效提高电驱部件的冷却效率，或者，通过油温控制冷却润滑油是否与油冷器进行热交换，以确保冷却润滑油的冷却效果。
根据本公开实施例的电驱控制装置90，可以根据油冷系统中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，以实现对各电驱部件的精准供油和高效散热。
本公开第三方面实施例提供一种油冷控制方法，应用于上述实施例的油冷系统70，如图3所示，该控制方法包括：步骤S1-步骤S2。
步骤S1，根据电驱系统的运行参数确定电驱系统的运行工况。
其中，运行参数可以理解为电驱系统在运行过程中的参数，运行参数可以为电驱系统的工作电流、电压、温度和输出功率等，例如，根据电驱系统的温度确定电驱系统的运行工况为低温工况或高温工况。
步骤S2，根据电驱系统的运行工况和电驱系统的电机温度控制油冷系统中第一控制阀对应每个冷却润滑油路的开度，以控制每个冷却润滑油路的供油量。
具体的，由于电驱系统的运行工况不同电驱部件的冷却需求也不同，以及电机温度越高则意味着电机的冷却需求越大。基于此，本申请中通过运行工况和电机温度来确定各电驱部件的冷却需求，从而根据各电驱部件的冷却需求来控制第一控制阀对应连接每个冷却润滑油路的输出端的开度，以控制每个冷却润滑油路的供油量，示例性的，根据电驱部件的冷却需求设定第一控制阀与每个冷却润滑油路对应连接输出端的开度值，若电驱部件为电机转子，若运行工况为电机转子温度较高的工况，此时电机转子的冷却需求较大，则控制第一控制阀对应连接电机转子冷却润滑油路的输出端的开度为较大开度值，或者控制第一控制阀对应连接电机转子冷却润滑油路的输出端的开度增大，以控制电机转子冷却润滑油路的供油量增加，以提高电机转子冷却润滑油路对电机转子的散热能力；或者，若确定电机温度较高，此时则说明电机的冷却需求较大，则控制第一控制阀对应连接电机转子冷却润滑油路的输出端或电机定子冷却润滑油路的输出端的开度为较大开度值；或者控制第一控制阀对应连接电机转子冷却润滑油路的输出端或电机定子冷却润滑油路的输出端的开度增大，以提高冷却润滑油路对电机的散热能力。由此，本申请中通过控制运行工况和电机温度确定各电驱部件的冷却需求，以结合电驱部件的冷却需求控制对应的冷却润滑油路的供油量，满足各电驱部件的冷却需求，提高了电驱部件的冷却效率。
根据本公开实施例的油冷控制方法，通过运行工况和电机温度确定各电驱部件的冷却需求，从而根据各电驱部件的冷却需求控制第一控制阀对应每个冷却润滑油路输出端的开度，以控制每个冷却润滑油路的供油量，由此，本申请中通过运行工况和电机温度动态调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，有效提高电驱部件的冷却效率。
在一些实施例中，如图1，图4-图6所示，运行工况包括第一工况，在第一工况下电机转子温度高于第一转子温度阈值，其中，第一转子温度阈值可以理解为根据转子发热较高而预设的温度阈值；和第二工况，在第二工况下电机转子温度低于第二转子温度阈值，其中，第二转子温度阈值可以理解为根据转子发热低而预设的温度阈值，第一转子温度阈值大于或等于第二转子温度阈值，第一工况可以为驻车工况，第二工况可以为驱动工况。
在一些实施例中，在第一工况下，控制第一控制阀的对应减速器冷却润滑油路的输出端关闭，以关闭减速器冷却润滑油路的供油。
具体的，若确定电驱系统的运行工况为第一工况，而在第一工况下电机转子温度较高，此时可通过关闭减速器冷却润滑油路来提高电机转子冷却润滑油路的供油量，并控制第一控制阀的对应减速器冷却润滑油路的输出端关闭，以关闭减速器冷却润滑油路的供油，由此，本申请中通过运行工况动态调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，避免了减速器油量过多和电机油量较小而造成的电机过温问题。
在一些实施例中，在第一工况下，在电机温度小于第一电机温度阈值时，控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小；或者，在电机温度大于或等于第一电机温度阈值时，控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，且控制第一控制阀3的对应电机定子冷却润滑油路的输出端的开度增大。
其中，第一电机温度阈值可以理解为在第一工况下电机温度正常的临界值。
具体的，在第一工况下关闭减速器冷却润滑油路的供油的条件下，若确定电机温度小于第一电机温度阈值，此时电机温度较低，因此，对于电机定子的冷却需求即所需供油量也相应地减少，然而第一工况会导致电机转子温度相对较高，基于此，为了确保冷却润滑油能够对电机转子进行充分冷却，则可通过最大限度地减少电机定子冷却润滑油路的供油量，来提高电机转子冷却润滑油路的供油量，而控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变。例如，控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度为最大开度值或原有较大的开度值，以确保有充足的冷却润滑油对电机转子进行冷却降温，满足电机转子的调温需求，并且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小，以提高电机转子冷却润滑油路的供油量；或者，若确定电机温度大于或等于第一电机温度阈值，此时电机温度较高，因此，对于电机定子的冷却需求即所需供油量也相应地增加，然而第一工况会导致电机转子温度相对较高，因此控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，以确保有充足的冷却润滑油对电机转子进行冷却降温，满足电机转子的调温需求，并且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大，以提高电机定子冷却润滑油路的供油量，从而满足电机定子的冷却需求。由此，本申请中结合运行工况对各电驱部件进行精准供油，避免了减速器油量过多和电机油量较小而造成的电机过温问题，提高了电驱部件的散热效率。
此外，需要说明的是，在控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减少时，可以控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度降低至最小开度值或其他较小的预设开度值，对此不作限制；以及在控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大时，可以控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大至最大开度值或其他较大的预设开度值，对此不作限制。
在一些实施例中，在第二工况下，控制第一控制阀的对应电机转子冷却润滑油路的输出端关闭，以关闭电机转子冷却润滑油路的供油；在第二工况下，在电机温度小于第二电机温度阈值时，控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小；或者，在电机温度大于或等于第二电机温度阈值时，控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大。
其中，第二电机温度阈值可以理解为在第二工况下电机温度正常的临界值。
具体的，若确定电驱系统的运行工况为第二工况，而在第二工况下电机转子温度较低，此时无需对电机转子进行冷却，则控制第一控制阀的对应电机转子冷却润滑油路的输出端关闭，以关闭电机转子冷却润滑油路的供油，从而停止向电机转子提供冷却润滑油，然后再根据电机温度调整电机定子冷却润滑油路的供油量，以满足电机定子的冷却需求。也就是说，若确定电机温度小于第二电机温度阈值，此时电机温度较低，因此，对于电机定子的冷却需求即所需供油量也相应地减少，同时为了确保减速器的润滑效果，则控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变。例如，控制第一控制阀的对应减速器冷却润滑油路的输出端的开度为最大开度值或原有开度值或其他开度较大的预设开度值，对比不作限制，并且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小，以为电机定子冷却润滑油路提供较少的供油量，来匹配电机定子的调温需求；或者，若确定电机温度大于或等于第二电机温度阈值，此时电机温度较高，因此，对于电机定子的冷却需求即所需供油量也相应地增加，同时为了确保减速器的润滑效果，则控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，并且控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大，以为电机定子冷却润滑油路提供较高的供油量，从而避免电机定子过温，由此，本申请中在第二工况下通过关闭电机转子冷却润滑油路来增大电机定子冷却润滑油路的冷却润滑油量，避免了减速器油量过多和电机油量较小而造成的电机过温问题，提高了电驱功率密度。
在一些实施例中，根据电驱系统的运行工况和冷却润滑油路输出冷却润滑油的油温控制油冷系统中第二控制阀所连通的冷却润滑油的流通路径，以控制冷却润滑油的温度。
具体的，电驱系统的运行工况不同电机转子温度的高低也不同，且电机转子温度越高导致电机转子的冷却需求越大，以及冷却润滑油的油温会影响冷却润滑油的冷却效果，且油温越高冷却润滑油的冷却效果越差。基于此，本申请中通过运行工况和冷却润滑油路输出冷却润滑油的油温，来控制第二控制阀所连通的冷却润滑油的流通路径，以控制冷却润滑油的温度。例如，若运行工况为电机转子温度较高的工况，或者冷却润滑油的油温较高，则控制第二控制阀与油冷器之间所连通的流通路径导通，以使得冷却润滑油与冷却液之间进行热交换，从而降低冷却润滑油的油温，提高冷却润滑油的冷却效果；或者，若运行工况为电机转子温度较低的工况，或者冷却润滑油的油温较低，则控制第二控制阀与油冷器1之间所连通的流通路径截止，以控制冷却润滑油不与冷却液之间进行热交换。
在一些实施例中，在第一工况下，控制第二控制阀的第一输出端处于打开状态，以使得冷却润滑油输入至油冷系统的油冷器中；控制第二控制阀的第二输出端处于关闭状态，以切断冷却润滑油输入至第一控制阀的路径。
具体的，在第一工况下电机转子温度较高，此时需要降低冷却润滑油的温度来提高电机转子的冷却效果，则控制第二控制阀的第一输出端处于打开状态，以使得冷却润滑油输入至油冷系统的油冷器中，以及控制第二控制阀的第二输出端处于关闭状态，以切断冷却润滑油输入至第一控制阀的路径，即控制冷却润滑油与油冷器中的冷却液进行热交换来降低冷却润滑油的油温，然后控制冷却润滑油进入第一控制阀以及后续冷却润滑油路，以对各电驱部件进行冷却和润滑。由此，本申请中通过运行工况控制油冷器对冷却润滑油进行冷却，从而提高不同运行工况下冷却润滑油的冷却效果。
在一些实施例中，在第二工况下，在油温大于或等于油温阈值时，控制第二控制阀的第一输出端处于打开状态以使得冷却润滑油输入至油冷系统的油冷器中，且控制第二控制阀的第二输出端处于关闭状态以切断冷却润滑油输入至第一控制阀的路径；或者，在油温小于油温阈值时，控制第二控制阀的第二输出端处于打开状态以使得冷却润滑油输入至第一控制阀，且控制第二控制阀的第一输出端处于关闭状态以切断冷却润滑油输入至油冷器的路径。
具体的，在第二工况下电机转子温度较低，此时无需降低冷却润滑油的温度对电机转子进行冷却，然后根据油温确定冷却润滑油是否需要进行冷却。若确定油温大于或等于油温阈值，此时则说明冷却润滑油的冷却效果不佳，则第二控制阀的第一输出端处于打开状态以使得冷却润滑油输入至油冷系统的油冷器中，且控制第二控制阀的第二输出端处于关闭状态以切断冷却润滑油输入至第一控制阀的路径，即控制冷却润滑油与油冷器中的冷却液进行热交换来降低冷却润滑油的油温，然后控制冷却润滑油进入第一控制阀以及后续冷却润滑油路，对各电驱部件进行冷却和润滑；或者，若确定油温小于油温阈值，此时则说明冷却润滑油的冷却效果较好，则控制第二控制阀的第二输出端处于打开状态以使得冷却润滑油输入至第一控制阀，并且控制第二控制阀的第一输出端处于关闭状态以切断冷却润滑油输入至油冷器的路径，即不再控制冷却润滑油与油冷器中的冷却液进行热交换，而是直接控制冷却润滑油进入第一控制阀以及后续冷却润滑油路，以对各电驱部件进行冷却和润滑。由此，本申请中通过运行工况来控制油冷器对冷却润滑油进行冷却，从而提高不同运行工况下冷却润滑油的冷却效果。
在一些实施例中，根据电驱系统的运行工况、电机温度和电机转速控制油冷系统中用于将冷却润滑油泵送至油冷系统中第二控制阀的油泵的转速。
具体的，电驱系统的运行工况不同，电机转子温度的大小也不同，且电机转子温度越高导致电机转子的冷却需求越大，则油泵需要越高转速来提高输送的冷却润滑油量,。由于电机温度越高则意味着电机需要更多冷却润滑油量来对电机进行冷却降温，以及电机转速越高则意味着电机需要更多冷却润滑油量来对电机进行润滑，基于此，本申请中通过运行工况、电机温度和电机转速，以确定电机所需冷却润滑油的供油量，然后根据电机所需冷却润滑油量控制油泵的转速，以驱动冷却润滑油泵送至第二控制阀，为电机提供相应的冷却润滑油量进行润滑和冷却，同时也能减少油泵能耗并且提高油泵的效率。
在一些实施例中，如图7所示，在第一工况下，控制油冷系统的油泵以第一转速运行；在第二工况下，在电机温度小于第三电机温度阈值以及电机转速小于第一转速阈值时，控制油泵以第二转速运行，其中，第二转速<第一转速。
其中，电机温度阈值为预先设定的电机温度范围的临界值，转速阈值为预先设定用于判定电机润滑需求的电机转速范围的临界值。
具体的，在第一工况下电机转子温度较高，则控制油冷系统的油泵以第一转速运行，即控制油泵以高转速运行，以提高油泵输送润滑油的速度，从而增加流入冷却润滑油路的冷却润滑油量，以确保电机转子在第一工况下能够得到充分冷却；由于电机转子温度和电机温度越高则意味着电机需要更多冷却润滑油量来对电机进行冷却降温，而电驱系统的运行工况不同，电机转子温度的大小也不同，以及电机转速越高则意味着电机需要更多冷却润滑油量来对电机进行润滑,。基于此，本申请中根据电驱系统的运行工况、电机温度和电机转速控制油泵的转速，若确定电驱系统的运行工况为第二工况，此时则说明电机转子的温度较低，但是，电机转子的温度无法反映电机整体的温度，因此还需判断电机温度的大小；若确定电机温度小于第三电机温度阈值，此时电机冷却所需冷却润滑油量较少，以及若确定电机转速小于第一转速阈值，则说明电机定子轴承和减速器齿轮轴承润滑所需冷却润滑油量较少，则控制油泵以第二转速运行，即控制油泵以较低转速运行，以为电机提供相应的冷却润滑油量进行润滑和冷却。由此，本申请中通过运行工况和电机转速动态来调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，同时也减少了油泵能耗并且提高了油泵效率。
在一些实施例中，在第二工况下，在电机温度小于第三电机温度阈值以及电机转速大于第一转速阈值且小于第二转速阈值时，控制油泵以第三转速运行，其中，第一转速>第三转速>第二转速；在电机温度小于第三电机阈值以及电机转速大于第二转速阈值时，控制油泵以第四转速运行，其中，第一转速>第四转速>第三转速>第二转速。
具体的，本申请中根据电驱系统的运行工况、电机温度和电机转速来控制油泵的转速，若确定电驱系统的运行工况为第二工况，此时则说明电机转子温度较低，但是，电机转子的温度无法反映电机整体的温度，因此还需判断电机温度的大小。若确定电机温度小于第三电机温度阈值，此时电机冷却所需冷却润滑油量较少，以及电机转速小于第一转速阈值时，则控制油泵以第二转速运行，即控制油泵以较低转速运行，以为电机提供相应的冷却润滑油量进行润滑的同时对电机进行冷却；以及电机转速大于第一转速阈值且小于第二转速阈值时，则说明电机定子轴承和减速器齿轮轴承润滑所需冷却润滑油量较高，则控制油泵以第三转速运行，即控制油泵以较高转速运行，以为电机提供相应的冷却润滑油量进行润滑的同时对电机进行冷却；或者，在电机温度小于第三电机阈值时若确定电机转速大于第二转速阈值，则说明电机定子轴承和减速器齿轮轴承润滑所需冷却润滑油量很高，则控制油泵以第四转速运行，即控制油泵以高转速运行，以为电机提供相应的冷却润滑油量进行润滑的同时对电机进行冷却。由此，本申请中通过运行工况和电机转速动态调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，同时也减少了油泵的能耗并且提高了油泵的效率。
在一些实施例中，在第二工况下，在电机温度大于第三电机温度阈值且小于第四电机温度阈值以及电机转速小于第一转速阈值时，控制油泵以第三转速运行；在电机温度大于第三电机温度阈值且小于第四电机温度阈值以及电机转速大于第一转速阈值且小于第二转速阈值时，控制油泵以第四转速运行；在电机温度大于第三电机温度阈值且小于第四电机温度阈值以及电机转速大于第二转速阈值时，控制油泵以第一转速运行。
具体的，本申请中根据电驱系统的运行工况、电机温度和电机转速来控制油泵的转速，若确定电驱系统的运行工况为第二工况，此时则说明电机转子温度较低，但是，电机转子温度无法反映电机整体温度，因此还需判断电机温度的大小。若确定电机温度大于第三电机温度阈值且小于第四电机温度阈值，此时电机冷却所需冷却润滑油量较高，以及若确定电机转速小于第一转速阈值，则说明电机定子轴承和减速器齿轮轴承润滑所需润冷却滑油量较少，则控制油泵以第三转速运行，即控制油泵以较低转速运行，以为电机提供所需的冷却润滑油量进行润滑和冷却；或者若确定电机转速大于第一转速阈值且小于第二转速阈值，则说明电机定子轴承和减速器齿轮轴承润滑所需冷却润滑油量较多，则控制油泵以第四转速运行，即控制油泵以较高转速运行，以为电机提供所需的冷却润滑油量进行润滑和冷却；或者若确定电机转速大于第二转速阈值，则说明电机定子轴承和减速器齿轮轴承润滑所需冷却润滑油量多，则控制油泵以第一转速运行，即控制油泵以高转速运行，以为电机提供所需的冷却润滑油量进行润滑和冷却。由此，本申请中通过运行工况和电机转速动态调整冷却润滑油路的供油量，从而在不同运行工况下对电驱部件进行精准冷却和润滑，同时也减少了油泵的能耗并且提高了油泵的效率。
在一些实施例中，在第二工况下电机转子温度较低时，若确定电机温度大于第四电机温度阈值，此时电机冷却所需冷却润滑油量很高，则控制油泵以第一转速运行，即控制油泵以高转速运行，以提高油泵输送冷却润滑油的速度，从而增加流入冷却润滑油路的冷却润滑油量，以确保电机在第二工况下能够得到充分冷却。
下面参考图4所示对本公开实施例的油冷控制方法进行举例说明，具体内容如下。
步骤S3，电机控制器判断电驱系统的运行工况，其中，运行工况包括第一工况和第二工况。
步骤S4，确定在运行工况下各电驱部件所需供油量，即在运行工况下控制电机定子冷却润滑油路、电机转子冷却润滑油路和减速器冷却润滑油路的供油量。
步骤S5，电机控制器获取冷却润滑油的油温、电驱系统的电机温度和电机转速。
步骤S6，根据运行工况、油温和电机温度控制第一控制阀和第二控制阀的工作状态，以及根据运行工况、电机温度和电机转速控制油泵的转速。
下面参考图5所示对本公开实施例的油冷控制方法进行举例说明，具体内容如下。
步骤S3，电机控制器判断电驱系统的运行工况，执行步骤S7和步骤S9。
步骤S7，若运行工况为第一工况，执行步骤S8。
步骤S8，第二控制阀的状态为第一输出端处于打开状态以及第二输出端处于关闭状态，以控制控制油泵与油冷器之间形成的第一油路打开，以使得冷却润滑油输入至油冷器中，以及油泵与第一控制阀之间形成的第二油路关闭，即切断冷却润滑油输入至第一控制阀的路径。
步骤S9，若运行工况为第二工况，执行步骤S10。
步骤S10，电机控制器获取冷却润滑油的油温，执行步骤S11和步骤S13。
步骤S11，油温小于油温阈值，执行步骤S12。
步骤S12，第二控制阀的状态为第二输出端处于打开状态以及第一输出端处于关闭状态，以控制油泵与油冷器之间形成的第一油路关闭，即切断冷却润滑油输入至油冷器的路径，以及第二控制阀与第一控制阀之间形成的第二油路打开，以使得冷却润滑油输入至第一控制阀。
步骤S13，油温大于或等于油温阈值，执行步骤S14。
步骤S14，第二控制阀的状态为第一输出端处于打开状态以及第二输出端处于关闭状态，以控制控制油泵与油冷器之间形成的第一油路打开，以使得冷却润滑油输入至油冷器中，以及第二控制阀与第一控制阀之间形成的第二油路关闭，即切断冷却润滑油输入至第一控制阀的路径。
下面参考图6所示对本公开实施例的油冷控制方法进行举例说明，具体内容如下。
步骤S3，电机控制器判断电驱系统的运行工况，执行步骤S7和步骤S9。
步骤S7，若运行工况为第一工况，执行步骤S15。
步骤S9，若运行工况为第二工况，执行步骤S21。
步骤S15，关闭减速器冷却润滑油路的供油。
步骤S16，电机控制器获取电机温度，执行步骤S17和步骤S19。
步骤S17，电机温度小于第一电机温度阈值。
步骤S18，控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，以及控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小。
步骤S19，电机温度大于或等于第一电机温度阈值。
步骤S20，控制第一控制阀的对应电机转子冷却润滑油路的输出端的开度不变，以及控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大。
步骤S21，关闭电机转子冷却润滑油路。
步骤S22，电机控制器获取电机温度，执行步骤S23和步骤S25。
步骤S23，电机温度小于第二电机温度阈值。
步骤S24，控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，以及控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度减小。
步骤S25，电机温度大于或等于第二电机温度阈值。
步骤S26，控制第一控制阀的对应减速器冷却润滑油路的输出端的开度不变，以及控制第一控制阀的对应电机定子冷却润滑油路的输出端的开度增大。
下面参考图7所示对本公开实施例的油冷控制方法进行举例说明，具体内容如下。
步骤S3，电机控制器判断电驱系统的运行工况，执行步骤S7和步骤S9。
步骤S7，若运行工况为第一工况，执行步骤S27。
步骤S9，若运行工况为第二工况，执行步骤S28。
步骤S27，油冷系统的油泵以第一转速运行。
步骤S28，电机控制器获取电机温度，执行步骤S29、步骤S37和步骤S45。
步骤S29，电机温度小于第三电机温度阈值。
步骤S30，电机控制器获取电机转速，执行步骤S31、步骤S33和步骤S35。
步骤S31，电机转速小于第一转速阈值。
步骤S32，控制油泵以第二转速运行。
步骤S33，电机转速大于第一转速阈值且小于第二转速阈值。
步骤S34，控制油泵以第三转速运行。
步骤S35，电机转速大于第二转速阈值。
步骤S36，控制油泵以第四转速运行。
步骤S37，在电机温度大于第三电机温度阈值且小于第四电机温度阈值。
步骤S38，电机控制器获取电机转速，执行步骤S39、步骤S41和步骤S43。
步骤S39，电机转速小于第一转速阈值。
步骤S40，控制油泵以第三转速运行。
步骤S41，电机转速大于第一转速阈值且小于第二转速阈值。
步骤S42，控制油泵以第四转速运行。
步骤S43，电机转速大于第二转速阈值。
步骤S44，控制油泵以第一转速运行。
步骤S45，电机温度大于第四电机温度阈值。
步骤S46，控制油泵以第一转速运行。
本公开第四方面实施例提供一种电子设备60，如图8所示，该电子设备60包括至少一个处理器7和与至少一个处理器7通信连接的存储器8。
其中，存储器8中存储有可被至少一个处理器7执行的计算机程序，至少一个处理器7执行计算机程序时实现上述实施例的油冷控制方法。
需要说明的是，本公开实施例的电子设备60的具体实现方式与本公开上述任意实施例的油冷控制方法的具体实现方式类似，具体请参见关于方法部分的描述，为了减少冗余，此处不再赘述。
根据本公开实施例的电子设备60，通过执行上述实施例的油冷控制方法，可以根据油冷系统70中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开第五方面实施例提供一种车辆100，如图9所示，该车辆100包括上述实施例的电驱系统80和电驱控制装置90。
其中，电驱系统80可以包括电机、减速器等。电驱控制装置90包括油冷系统70、传感器组件5和控制器6等，电驱控制装置90可以参照上面实施例的方法对电驱系统80进行润滑和冷却等。
根据本公开实施例的车辆100，通过上述实施例的电驱控制装置90，可以根据油冷系统70中每个驱动部件的冷却需求为每个驱动部件分配冷却润滑油量，实现对各电驱部件的精准供油和高效散热。
本公开第六方面实施例提供一种非易失性可读存储介质，其上存储有计算机程序，其中，计算机程序被执行时实现上述实施例的油冷控制方法。
在本说明书的描述中，流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本公开的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本公开的实施例所属技术领域的技术人员所理解。
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本公开的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
此外，在本公开各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (24)

  1. 一种油冷系统(70)，其中，包括：
    多个冷却润滑油路(2)，分别用于对相应的电驱部件进行冷却；和
    第一控制阀(3)，所述第一控制阀(3)的第一输入端适于输入冷却润滑油，所述第一控制阀(3)的多个输出端分别与多个所述冷却润滑油路(2)的输入端对应连接，用于控制每个所述冷却润滑油路(2)的供油量。
  2. 根据权利要求1所述的油冷系统(70)，其中，所述油冷系统(70)还包括：
    油冷器(1)，所述油冷器(1)的输出端与所述第一控制阀(3)的所述第一输入端连接，用于所述冷却润滑油与冷却液之间的热交换并输出所述冷却润滑油。
  3. 根据权利要求2所述的油冷系统(70)，其中，所述油冷系统(70)还包括：
    第二控制阀(42)，所述第二控制阀(42)的第一输出端与所述油冷器(1)的润滑油输入口连接，所述第二控制阀(42)的第二输出端与所述第一控制阀(3)的第二输入端连接，用于控制冷却润滑油的流通路径。
  4. 根据权利要求3所述的油冷系统(70)，其中，所述油冷系统(70)还包括：
    油泵(43)，所述油泵(43)的输出端与所述第二控制阀(42)的输入端连接，
    所述油泵(43)的输入端适于输入冷却润滑油，所述油泵(43)用于将所述冷却润滑油泵送至所述第二控制阀(42)；或者
    所述油泵(43)的输出端与所述油冷器(1)的所述润滑油输入口连接，所述油泵(43)的输入端适于输入冷却润滑油，所述油泵(43)用于将所述冷却润滑油泵送至所述油冷器(1)。
  5. 根据权利要求4所述的油冷系统(70)，其中，所述油冷系统(70)还包括：
    储油槽(41)，所述储油槽(41)的进油口与所述冷却润滑油路(2)的输出端连接，所述储油槽(41)的出油口与所述油泵(43)的输入端连接，所述储油槽(41)用于存放所述冷却润滑油路(2)输出的冷却润滑油。
  6. 根据权利要求1-5中任一项所述的油冷系统(70)，其中，所述油冷系统(70)包括：
    电机定子冷却润滑油路(21)，适于设置于电机定子内部，用于对所述电机定子进行冷却和润滑；
    电机转子冷却润滑油路(22)，适于设置于电机转子内部，用于对所述电机转子进行冷却和润滑；和
    减速器冷却润滑油路(23)，适于设置于减速器内部，用于对所述减速器进行冷却和润滑。
  7. 根据权利要求1-6中任一项所述的油冷系统(70)，其中，所述油冷系统(70)设置于一种电驱控制装置(90)，所述电驱控制装置(90)还包括：
    传感器组件(5)，用于采集冷却润滑油的油温、电机温度和电机转速；和
    控制器(6)，所述控制器(6)与所述油冷系统(70)和所述传感器组件(5)分别连接，用于根据电驱系统运行工况和所述冷却润滑油的油温、电机温度和电机转速控制所述油冷系统(70)。
  8. 一种油冷控制方法，应用于权利要求1-6中任一项所述的油冷系统(70)，其中，包括：
    根据电驱系统的运行参数确定所述电驱系统的运行工况；和
    根据所述电驱系统的运行工况和所述电驱系统的电机温度控制所述油冷系统(70)中第一控制阀(3)对应每个冷却润滑油路(2)的开度，以控制每个所述冷却润滑油路(2)的供油量。
  9. 根据权利要求8所述的油冷控制方法，其中，所述运行工况包括
    第一工况，在所述第一工况下电机转子温度高于第一转子温度阈值；和
    第二工况，在所述第二工况下所述电机转子温度低于第二转子温度阈值；
    其中，所述第一转子温度阈值大于或等于所述第二转子温度阈值。
  10. 根据权利要求9所述的油冷控制方法，其中，
    在所述第一工况下，
    控制所述第一控制阀(3)的对应减速器冷却润滑油路(23)的输出端关闭，以关闭所述减速器冷却润滑油路(23)的供油。
  11. 根据权利要求10所述的油冷控制方法，其中，
    在所述第一工况下，
    在所述电机温度小于第一电机温度阈值时，控制所述第一控制阀(3)的对应电机转子冷却润滑油路(22)的输出端的开度不变，且控制所述第一控制阀(3)的对应电机定子冷却润滑油路(21)的输出端的开度减小；或者
    在所述电机温度大于或等于所述第一电机温度阈值时，控制所述第一控制阀(3)的对应电机转子冷却润滑油路(22)的输出端的开度不变，且控制所述第一控制阀(3)的对应电机定子冷却润滑油路(21)的输出端的开度增大。
  12. 根据权利要求9-11中任一项所述的油冷控制方法，其中，
    在所述第二工况下，
    控制所述第一控制阀(3)的对应电机转子冷却润滑油路(22)的输出端关闭，以关闭所述电机转子冷却润滑油路(22)的供油。
  13. 根据权利要求12所述的油冷控制方法，其中，
    在所述第二工况下，
    在所述电机温度小于第二电机温度阈值时，控制所述第一控制阀(3)的对应减速器冷却润滑油路(23)的输出端的开度不变，且控制所述第一控制阀(3)的对应电机定子冷却润滑油路(21)的输出端的开度减小；或者
    在所述电机温度大于或等于所述第二电机温度阈值时，控制所述第一控制阀(3)的对应减速器冷却润滑油路(23)的输出端的开度不变，且控制所述第一控制阀(3)的对应电机定子冷却润滑油路(21)的输出端的开度增大。
  14. 根据权利要求9-13中任一项所述的油冷控制方法，其中，还包括：
    根据所述电驱系统的运行工况和所述冷却润滑油路(2)输出冷却润滑油的油温控制所述油冷系统(70)中第二控制阀(42)所连通的冷却润滑油的流通路径，以控制所述冷却润滑油的温度。
  15. 根据权利要求14所述的油冷控制方法，其中，
    在所述第一工况下，
    控制所述第二控制阀(42)的第一输出端处于打开状态，以使得所述冷却润滑油输入至所述油冷系统(70)的油冷器(1)中；
    控制所述第二控制阀(42)的第二输出端处于关闭状态，以切断所述冷却润滑油输入至所述第一控制阀(3)的路径。
  16. 根据权利要求14或15所述的油冷控制方法，其中，
    在所述第二工况下，
    在所述油温大于或等于油温阈值时，控制所述第二控制阀(42)的第一输出端处于打开状态以使得冷却润滑油输入至所述油冷系统(70)的油冷器(1)中，且控制所述第二控制阀(42)的第二输出端处于关闭状态以切断所述冷却润滑油输入至所述第一控制阀(3)的路径；或者
    在所述油温小于所述油温阈值时，控制所述第二控制阀(42)的第二输出端处于打开状态以使得冷却润滑油输入至所述第一控制阀(3)，且控制所述第二控制阀(42)的第一输出端处于关闭状态以切断所述冷却润滑油输入至所述油冷器(1)的路径。
  17. 根据权利要求9-16中任一项所述的油冷控制方法，其中，所述油冷控制方法还包括：
    根据所述电驱系统的运行工况、所述电机温度和电机转速控制所述油冷系统(70)中用于将冷却润滑油泵送至所述油冷系统(70)中第二控制阀(42)的油泵(43)的转速。
  18. 根据权利要求17所述的油冷控制方法，其中，
    在所述第一工况下，控制所述油冷系统(70)的油泵(43)以第一转速运行；和
    在所述第二工况下，在所述电机温度小于第三电机温度阈值以及电机转速小于第一转速阈值时，控制所述油泵(43)以第二转速运行，其中，所述第二转速<所述第一转速。
  19. 根据权利要求18所述的油冷控制方法，其中，
    在所述第二工况下，
    在所述电机温度小于第三电机温度阈值以及所述电机转速大于所述第一转速阈值且小于第二转速阈值时，控制所述油泵(43)以第三转速运行，其中，所述第一转速>所述第三转速>所述第二转速；
    在所述电机温度小于所述第三电机阈值以及所述电机转速大于所述第二转速阈值时，控制所述油泵以第四转速运行，其中，所述第一转速>所述第四转速>所述第三转速>所述第二转速。
  20. 根据权利要求19所述的油冷控制方法，其中，
    在所述第二工况下，
    在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速小于所述第一转速阈值时，控制所述油泵(43)以所述第三转速运行；
    在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速大于所述第一转速阈值且小于第二转速阈值时，控制所述油泵(43)以所述第四转速运行；
    在所述电机温度大于所述第三电机温度阈值且小于第四电机温度阈值以及所述电机转速大于所述第二转速阈值时，控制所述油泵(43)以所述第一转速运行。
  21. 根据权利要求20所述的油冷控制方法，其中，
    在所述第二工况下，在所述电机温度大于所述第四电机温度阈值时，控制所述油泵(43)以所述第一转速运行。
  22. 一种车辆(100)，其中，包括：
    电驱系统(80)；和
    权利要求7所述的电驱控制装置(90)。
  23. 根据权利要求22所述的车辆，其中，所述车辆还包括：
    一种电子设备(60)，所述电子设备(60)包括至少一个处理器(7)和
    存储器(8)，所述存储器(8)与所述至少一个处理器(7)通信连接；
    所述存储器(8)中存储有可被所述至少一个处理器(7)执行的计算机程序，所述至少一个处理器(7)执行所述计算机程序时实现权利要求8-21中任一项所述的油冷控制方法。
  24. 根据权利要求22所述的车辆，其中，所述车辆还包括一种非易失性可读存储介质，其上存储有计算机程序，所述计算机程序被执行时实现权利要求8-21中任一项所述的油冷控制方法。
PCT/CN2025/099339 2024-06-14 2025-06-05 油冷系统、油冷控制方法和车辆 Pending WO2025256456A1 (zh)

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