JPWO2017170107A1 - Non-contact power supply device and non-contact power transmission system equipped with the same - Google Patents

Abstract

The non-contact power supply device (1) transmits power to the non-contact power receiving device (10) in a non-contact manner, and includes a plurality of power supply units (3), an input unit (6), and a communication unit (4) on the power supply side. And a control unit (2) on the power feeding side. Each of the plurality of power feeding units (3) has a resonance circuit (8) and is configured to transmit power. The input unit (6) is configured such that the user selects at least one designated power supply unit among the plurality of power supply units (3). The power supply side communication unit (4) is configured to transmit a response request message including a communication address assigned to the contactless power receiving device (10) and to receive a response message including the communication address. The control unit (2) on the power supply side is configured to operate the specified power supply unit and associate the specified power supply unit and the non-contact power receiving device (10) based on the communication address. According to this aspect, in an induction heating cooker having a plurality of power feeding units, non-contact power transmission can be performed using an arbitrary power feeding unit.

Description

  The present disclosure relates to a contactless power transmission system.

  2. Description of the Related Art Conventionally, a configuration for performing wireless communication between a power feeding device and a power receiving device is known in order to improve usability and reliability in a non-contact power transmission system (see, for example, Patent Document 1).

  FIG. 12 is a block configuration diagram of a conventional non-contact power transmission system described in Patent Document 1. In FIG. As shown in FIG. 12, in the above-described prior art, the device main body 420 corresponds to a non-contact power supply device, and the remote control device 401 corresponds to a non-contact power receiving device.

  The remote control device 401 includes a power receiving resonance circuit 405a and a communication resonance circuit 405b. The resonance circuit 405a is used to receive power transmission from the device main body 420 wirelessly based on a change in magnetic flux generated from the device main body 420 in order to input instructions to the device main body 420 and output information related to the device main body 420. It is done. The resonance circuit 405b is used for two-way communication of communication signals with the device main body 420 wirelessly.

  The device main body 420 includes a power supply resonance circuit 422 corresponding to the resonance circuit 405a, a communication resonance circuit 421 and a communication circuit 423 corresponding to the resonance circuit 405b.

  13A and 13B are perspective views showing a specific example of the non-contact power transmission system according to the conventional technology. The example shown in FIG. 13A is an induction heating device in which two heating coils 426 are arranged. The example shown in FIG. 13B is an induction heating apparatus in which many relatively small heating coils 426 are arranged so as to be distributed in a planar shape. FIG. 13C is a flowchart showing the control for the device main body 420 to detect the remote control device 401 in the above-described prior art.

  FIG. 14 is a block configuration diagram of a conventional non-contact power transmission system described in Non-Patent Document 1. Non-Patent Document 1 prescribes specifications of a non-contact power transmission system mainly for mobile devices such as smartphones.

  As shown in FIG. 14, the non-contact power transmission system defined in Non-Patent Document 1 includes a base station 501 and a mobile device 502.

  Power is transmitted in a non-contact manner from the power conversion unit 506 a and the power conversion unit 506 b of the base station 501 to the power pickup unit 507 of the mobile device 502. The load 509 of the mobile device 502 consumes the transmitted power.

  Meanwhile, the base station 501 receives the magnitude of the required power transmitted from the power receiver 505 of the mobile device 502 to the power transmitter 504a and power transmitter 504b of the base station 501 via the communication control unit 508a and communication control unit 508b. The magnitude of the transmitted power is controlled according to.

  FIG. 15 is a state transition diagram of the conventional non-contact power transmission system described in Non-Patent Document 1. In the selection state 601 shown in FIG. 15, the non-contact power transmission system detects whether or not the mobile device 502 is mounted on the base station 501.

  For example, the base station 501 detects that the mobile device 502 is mounted by detecting a change in impedance. When the placement of the mobile device 502 is detected, the base station 501 transitions to the ping state 602.

  In the ping state 602, the base station 501 transmits minute power for operating the communication control unit 508c from the power conversion unit 506a to the power pickup unit 507 of the mobile device 502.

  In this situation, if the response from the mobile device 502 is not transmitted to the base station 501 via the communication control units 508a and 508b within a predetermined time, the base station 501 returns to the selection state 601. When the response is transmitted, the base station 501 continues the transmission of the minute power and transits to the identification state / setting state 603.

  In the identification state / setting state 603, the mobile device 502 transmits the identification information and the magnitude of the required power to the base station 501 via the communication control units 508a and 508b. When the base station 501 determines that it can cope with the magnitude of the required power from the mobile device 502, the base station 501 completes the setting and transitions to the power supply state 604.

  In the power supply state 604, power is transmitted from the power transmitter 504 a of the base station 501 to the power receiver 505 of the mobile device 502. The magnitude of the transmitted power is controlled according to the magnitude of the required power transmitted from the power receiver 505 of the mobile device 502 to the power transmitter 504a of the base station 501. The transmitted power is consumed by the load 509 of the mobile device 502.

  FIG. 16 shows the format of a communication packet used in the non-contact power transmission system described in Non-Patent Document 1.

  As shown in FIG. 16, the format of the communication packet includes a preamble 701, a header 702, a message 703, and a checksum 704.

  The preamble 701 is 11 to 25 bytes of data for detecting a communication packet. The header 702 is 1-byte data to which a code corresponding to the message type and size is assigned. The message 703 is 1 to 27 bytes of data corresponding to the code of the header 702. The checksum 704 is 1-byte data for detecting a packet error.

  FIG. 17 is a diagram illustrating a relationship between a message size defined in Non-Patent Document 1 and a header code. FIG. 18 is a diagram showing message types defined in Non-Patent Document 1.

  Non-Patent Document 1 specifies that a message size of 1 to 27 bytes obtained by substituting the code in the header 702 into the mathematical formula shown in FIG. 17 is used. Non-Patent Document 1 also defines the packet type and message size of a message corresponding to each code, as shown in FIG. Detailed description is omitted here.

JP 2009-165291 A

System Description Wireless Power Transfer Volume I: Low Power Part 1: Interface Definition Version 1.1.2 June 2013

  When the prior art described in Patent Document 1 is used to select a cooking container such as a pan or a remote control device including a weak electric circuit such as a communication circuit or an information input / output circuit, according to the selection, It is configured to switch between a case where only a large amount of power is sent from a feeding coil arranged in the apparatus body and a case where a minute amount of power and communication data are sent from the feeding coil. For this reason, it is possible to make the coil for electric power feeding common with the coil for communication.

  In the prior art described in Non-Patent Document 1, since the transmitted power is limited to 5 W or less, it is easy to communicate by superimposing data on the transmitted power. For this reason, the coil for power feeding and the coil for communication are made common on both the power feeding side and the power receiving side, and power feeding and data communication can always be performed at the same time.

  However, some general electric appliances have power consumption exceeding 1 kW. In this case, in order to perform power feeding and data communication at the same time, a power feeding coil and a communication coil are required.

  In addition, in the prior art described in Patent Document 1, when the power supply frequency is close to the communication frequency, the communication resonance circuit 405b is affected by noise from the power reception resonance circuit 405a. For this reason, only a limited amount of information can be communicated at the time when the voltage of the transmitted power becomes 0 V, that is, in the time zone near the zero cross point.

  When the non-contact power supply device has a plurality of power supply resonance circuits, the same number of communication resonance circuits and communication circuits as the power supply coils are required. For this reason, a structure may become complicated and manufacturing cost may become high.

  The present disclosure solves the conventional problems, and provides a contactless power transmission system on a practical scale capable of accurate communication and safe power transmission without being affected by noise.

  A contactless power supply device according to an aspect of the present disclosure includes a plurality of power supply units, an input unit, a power supply side communication unit, and a power supply side control unit in order to transmit power to a contactless power receiving device in a contactless manner. Each of the plurality of power feeding units has a resonance circuit and is configured to transmit power. The input unit is configured such that the user selects at least one designated power supply unit among the plurality of power supply units. The communication unit on the power feeding side is configured to transmit a response request message including a communication address assigned to the non-contact power receiving apparatus and receive a response message including the communication address. The control unit on the power supply side is configured to operate the specified power supply unit and associate the specified power supply unit with the non-contact power receiving device based on the communication address.

  According to the present disclosure, it is possible to provide a non-contact power transmission system on a practical scale, capable of accurate communication and safe power transmission without being affected by noise.

  More specifically, in an induction heating cooker having a plurality of power supply units distributed in a plane and functioning as a non-contact power receiving device, non-contact power transmission is performed by operating a power supply unit designated by the user. It can be carried out.

FIG. 1 is a block configuration diagram of a contactless power transmission system according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram showing a format of a communication packet in the non-contact power transmission system according to the present embodiment. FIG. 3 is a state transition diagram in the non-contact power transmission system according to the present embodiment. FIG. 4 is a plan view schematically showing an induction heating cooker functioning as a non-contact power feeding device according to the present embodiment. FIG. 5A is a diagram schematically showing an operation on the induction heating cooker according to the present embodiment. FIG. 5B is a diagram schematically showing an operation of the induction heating cooker according to the present embodiment. FIG. 6A is a diagram schematically illustrating an operation on the induction heating cooker according to the present embodiment. FIG. 6B is a diagram showing a communication sequence when the operation shown in FIG. 6A is performed. FIG. 7A is a diagram schematically illustrating an operation on the induction heating cooker according to the present embodiment. FIG. 7B is a diagram showing a communication sequence when the operation shown in FIG. 7A is performed. FIG. 8A is a diagram schematically illustrating an operation on the induction heating cooker according to the present embodiment. FIG. 8B is a diagram showing a communication sequence when the operation shown in FIG. 8A is performed. FIG. 9A is a diagram schematically illustrating an operation on the induction heating cooker according to the present embodiment. FIG. 9B is a diagram showing a communication sequence when the operation shown in FIG. 9A is performed. FIG. 10 is a plan view schematically showing a modification of the induction heating cooker according to the present embodiment. FIG. 11A is a plan view schematically showing the state of initial registration in the induction heating cooker according to the present embodiment. FIG. 11B is a diagram showing a communication sequence between the induction heating cooker and the non-contact power receiving device in the initial registration. FIG. 12 is a block diagram of a non-contact power transmission system according to the prior art. FIG. 13A is a perspective view illustrating a specific example of a non-contact power transmission system according to the related art. FIG. 13B is a perspective view illustrating a specific example of a non-contact power transmission system according to the related art. FIG. 13C is a flowchart illustrating control in the contactless power transmission system according to the related art. FIG. 14 is a block diagram of a non-contact power transmission system according to the prior art. FIG. 15 is a state transition diagram of the contactless power transmission system according to the related art. FIG. 16 is a diagram illustrating a communication frame format in the non-contact power transmission system according to the related art. FIG. 17 is a diagram illustrating a relationship between a header of a communication frame and a message size in the contactless power transmission system according to the related art. FIG. 18 is a diagram illustrating a relationship between a header of a communication frame, a packet type, and a message size in a contactless power transmission system according to a conventional technique.

  A contactless power supply device according to an aspect of the present disclosure includes a plurality of power supply units, an input unit, a power supply side communication unit, and a power supply side control unit in order to transmit power to a contactless power receiving device in a contactless manner. Each of the plurality of power feeding units has a resonance circuit and is configured to transmit power. The input unit is configured such that the user selects at least one designated power supply unit among the plurality of power supply units. The communication unit on the power feeding side is configured to transmit a response request message including a communication address assigned to the non-contact power receiving apparatus and receive a response message including the communication address. The control unit on the power supply side is configured to operate the specified power supply unit and associate the specified power supply unit with the non-contact power receiving device based on the communication address.

  According to the non-contact power feeding device of another aspect of the present disclosure, in the above aspect, the plurality of power feeding units are arranged so as to be distributed in a planar shape, the input unit has a planar display unit, and the display unit The designated power feeding unit is selected by associating the position with each position of the plurality of power feeding units.

  A contactless power transmission system according to an aspect of the present disclosure includes the contactless power supply device according to any one of the above aspects and a contactless power receiving device that receives power transmitted from the contactless power supply device in a contactless manner. The non-contact power receiving device includes a power receiving unit, a power receiving side communication unit, and a power receiving side control unit. The power receiving unit includes a resonance circuit and is configured to receive the transmitted power. The communication unit on the power receiving side is configured to receive the response request message and transmit a response message including a communication address assigned to the non-contact power receiving device. The power-receiving-side control unit is configured to control the power-receiving-side communication unit to transmit a response message within a predetermined time when the power receiving unit receives power.

  A preferred embodiment of the present disclosure will be described with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

[Configuration of contactless power transmission system]
FIG. 1 is a block configuration diagram of a contactless power transmission system according to an embodiment of the present disclosure. As shown in FIG. 1, the contactless power transmission system according to the present embodiment includes a contactless power supply device 1 and at least one contactless power receiving device 10.

  The non-contact power supply device 1 includes a power supply side control unit 2, a power supply unit 3, a communication unit 4, a storage unit 5, and an input unit 6. The communication unit 4 is a communication unit on the power feeding side, and communicates with a communication unit 12 of the non-contact power receiving device 10 described later. Specific examples of the non-contact power feeding device 1 include, for example, an induction heating cooker embedded in a counter top of a kitchen counter.

  The non-contact power supply device 1 includes three power supply units 3 (a power supply unit 3a, a power supply unit 3b, and a power supply unit 3c). The storage unit 5 stores device information related to the non-contact power receiving device 10 transmitted from the communication unit 12 and received by the communication unit 4. The input unit 6 includes a touch panel device having a planar display unit.

  The user operates the input unit 6 to designate the power feeding unit 3 that operates for non-contact power transmission. Hereinafter, these power supply units 3 are referred to as designated power supply units 3d. A method of selecting the designated power supply unit 3d will be described later.

  The power feeding unit 3 includes a high frequency power supply unit 7 and a resonance circuit 8. The high frequency power supply unit 7 converts power supplied from a commercial power supply into high frequency power. The resonance circuit 8 includes a power feeding coil, and transmits the electric power converted by the high-frequency power supply unit 7 to the resonance circuit 11 of the non-contact power receiving device 10 described later in a non-contact manner.

  The control unit 2 controls the designated power supply unit 3d so that power necessary for the communication unit 12 of the non-contact power receiving apparatus 10 to operate is transmitted. The control unit 2 controls the communication unit 4 so as to receive the communication packet 18 including the communication address from the non-contact power receiving device 10 placed above the designated power supply unit 3d.

  The control unit 2 includes the designated power feeding unit 3d and the non-contact power receiving device 10 placed above the designated power feeding unit 3d in accordance with the communication address included in the received communication packet 18. Associate. The association between the designated power feeding unit 3d and the non-contact power receiving device 10 will be described later.

  The non-contact power receiving device 10 includes a resonance circuit 11, a communication unit 12, a control unit 13, a power measuring instrument 14, a load 15, a power supply circuit 16, and a device ID 17.

  Specific examples of the non-contact power receiving apparatus 10 include, for example, a juicer, a mixer, or a jar pot. Specific examples of the load 15 include a motor included in a juicer and a mixer, and a heater included in a jar pot.

  The resonant circuit 11 is a power receiving unit of the non-contact power receiving device 10 that includes a power receiving coil and receives transmitted power. The power supply circuit 16 converts the power received by the resonance circuit 11 into power for operating the load 15. The communication unit 12 is a power receiving side communication unit that communicates with the communication unit 4 of the non-contact power supply device 1.

  The control unit 13 is a control unit on the power receiving side. The control unit 13 controls the supply of power from the power supply circuit 16 to the load 15. The control unit 13 calculates a difference (hereinafter referred to as a power error) between the magnitude of the power being received measured by the power meter 14 and the rated power of the load 15. The communication unit 12 transmits a message including the calculated power error to the communication unit 4.

  When the non-contact power receiving device 10 is placed above the power feeding unit 3 and receives power from the power feeding unit 3, the control unit 13 transmits a communication packet 18 including a communication address assigned to the non-contact power receiving device 10 to a predetermined value. The communication unit 12 is controlled to transmit within time.

  In FIG. 1, two contactless power receiving devices 10 are placed on the contactless power supply device 1. One is placed above the power feeding unit 3a and the other is placed above the power feeding unit 3c.

  In the non-contact power supply device 1, the communication unit 4 repeatedly transmits a message request and receives a corresponding message. Based on the power error included in the received message, the control unit 2 controls the power supply unit 3 so as to supply power necessary to operate the load 15.

  The device ID 17 is set for each power receiving device and is used for communication between the non-contact power feeding device 1 and the non-contact power receiving device 10.

[Communication packet format]
Next, the format of the communication packet 18 used in communication between the non-contact power supply device 1 and the non-contact power receiving device 10 will be described with reference to FIG.

  FIG. 2 shows a frame format of the communication packet 18. As shown in FIG. 2, the format of the communication packet 18 includes a preamble 18a, a transmission source address 18b, a reception destination address 18c, a header 18d, a message 18e, and a checksum 18f.

  The preamble 18 a is used for detecting the communication packet 18. A code corresponding to the type and size of the message is assigned to the header 18d. The message 18e stores device information corresponding to the code assigned to the header 18d. The checksum 18f is used for detecting a packet error.

  In the present embodiment, similarly to the above-described Non-Patent Document 1, the communication packet 18 includes a 11-byte to 25-byte preamble 18a, a 1-byte transmission source address 18b, a 1-byte reception destination address 18c, and a 1-byte header. 18d, a 1-byte to 27-byte message 18e, and a 1-byte checksum 18f. The size of the message 18e is determined according to the code of the header 18d.

  These data sizes are not limited to the above values because the optimum values vary depending on the characteristics of the physical layer and the application to be realized.

  FIG. 3 is a state transition diagram in the non-contact power transmission system according to the present embodiment. In FIG. 3, PT-ON and OFF, which are the causes of the state transition, are added to FIG. PT-ON and OFF are instructions to the non-contact power supply device 1 input using the input unit 6. The PT-ON will be described later.

[Specific example of non-contact power supply device 1]
FIG. 4 is a plan view schematically showing induction heating cooker 20 functioning as non-contact power feeding device 1 according to the present embodiment. As shown in FIG. 4, the induction heating cooker 20 has a plurality of power feeding units 3 arranged so as to be distributed in a planar shape. Specifically, the power feeding units 3 are arranged in a matrix of 6 rows in the vertical direction and 9 columns in the horizontal direction.

  In the example shown below, it is assumed that three non-contact power receiving devices 10 have already been initially registered. These are referred to as non-contact power receiving devices 10a, 10b, and 10c. These have the same configuration as the non-contact power receiving apparatus 10 shown in FIG.

  As shown in FIG. 4, it is assumed that the non-contact power receiving devices 10a and 10c are placed on the induction heating cooker 20, and the non-contact power receiving device 10b is not placed. The resonance circuit 11 included in the non-contact power receiving device 10 a has a size that covers the six power feeding units 3. The resonance circuit 11 included in the non-contact power receiving device 10 c has a size that covers the twelve power feeding units 3.

  On the induction heating cooker 20, a pan 30 having a size enough to cover the 18 power feeding units 3 is also placed.

  In this embodiment, the j-th row means the j-th row from the front, and the k-th row means the k-th column from the left. Here, j is a natural number of 6 or less, and k is a natural number of 9 or less.

  For simplicity, the pan 30 or the like is placed on the j-th row (or k-th column), and the pan 30 or the like is placed on the j-th row (or k-th row). Express that.

[Execution of induction heating]
5A and 5B are diagrams showing operations on the input unit 6 when heating the pans 30 placed in the first to sixth rows and the first to third rows of the induction heating cooker 20. It is.

  As illustrated in FIG. 5A, the user designates the display area 6 a on the input unit 6 by pressing the finger 31 against the input unit 6 and moving the finger 31 on the input unit 6. The display area 6a corresponds to the area 21a on the top surface 21 of the induction heating cooker 20 on which the pan 30 is placed (see FIG. 4).

  That is, the control unit 2 associates the position on the input unit 6 with the position of the power supply unit 3 distributed in a planar manner, so that the power supply units 3 in the first row to the sixth row and the first column to the third column are connected. The selected power supply unit 3d is selected.

  Next, as shown in FIG. 5B, the user selects an induction heating (IH) mode and a heating level by pressing an arrow 6 d displayed on the input unit 6 with the finger 31. IH-5 illustrated in FIG. 5B indicates that the designated power feeding unit 3d is set to the IH mode and the heating level (5).

  In response to the operation shown in FIGS. 5A and 5B, the designated power feeding unit 3 d is activated, and induction heating for the pan 30 is started.

[Executing non-contact power transmission]
Here, the operation of non-contact power transmission in the present embodiment will be described.

  Specifically, contactless power transmission is performed to contactless power receiving devices 10a and 10c placed on induction heating cooker 20 among contactless power receiving devices 10a to 10c that are initially registered.

  The induction heating cooker 20 and the non-contact power receiving devices 10a to 10c have communication addresses (00h, 01h, 02h, 03h), respectively. The setting of a communication address for initial registration includes, for example, a method using a dip switch and automatic assignment of a communication address to be described later.

  FIGS. 6A and 7A illustrate the case where non-contact power transmission is performed with respect to the non-contact power receiving device 10a placed in the fifth to sixth rows and the fourth to sixth rows of the induction heating cooker 20. It is a figure which shows operation to the input part. 6B and 7B are diagrams showing communication sequences when the operations shown in FIGS. 6A and 7A are performed, respectively.

  As illustrated in FIG. 6A, the user designates the display area 6 b on the input unit 6 by pressing the finger 31 against the input unit 6 and moving the finger 31 on the input unit 6. The display area 6b corresponds to an area 21b on the top surface 21 on which the non-contact power receiving device 10a is placed (see FIG. 4).

  That is, the control unit 2 associates the position on the input unit 6 with the position of the power supply unit 3 distributed in a planar manner, so that the power supply units 3 in the fifth row to the sixth row and the fourth column to the sixth column are connected. The selected power supply unit 3d is selected.

  At this stage, the non-contact power transmission is in the OFF state 51 shown in FIG. 3, and no communication is performed between the induction heating cooker 20 and the non-contact power receiving device 10a (see FIG. 6B).

  Next, as shown in FIG. 7A, when the user presses the arrow 6d displayed on the input unit 6 with the finger 31, the power supply unit 3 corresponding to the display area 6b has no contact with the communication address (01h). It operates in a non-contact power transmission (PT) mode with respect to the power receiving device 10a. PT-ON (1) shown in FIG. 7A represents this state.

  At this time, the non-contact power transmission between the induction heating cooker 20 and the non-contact power receiving device 10a is in the ping state 52 shown in FIG.

  As illustrated in FIG. 7B, the communication unit 4 of the induction heating cooker 20 in the ping state 52 sequentially transmits response request messages to the communication addresses of the non-contact power receiving apparatuses 10a to 10c.

  The communication unit 12 of the non-contact power receiving apparatus 10a transmits a response message in response to a response request message addressed to the communication address (01h) within a predetermined time.

  The communication unit 4 of the induction heating cooker 20 receives the transmitted response message. Based on the communication address included in the received response message, the control unit 2 of the induction heating cooker 20 has the non-contact power receiving device 10a placed in the area of the top surface 21 corresponding to the display area 6b. Recognize The control unit 2 associates the designated power supply unit 3d with the non-contact power receiving device 10a. This ends the ping state 52.

  In FIG. 7B, PT-ON indicates that the user has performed the operation shown in FIG. 7A. The response request message (0-1) represents a response request message in which the communication address (00h) and the communication address (01h) are stored in the transmission source address 18b and the reception destination address 18c, respectively.

  The response request message (0-2) represents a response request message in which the communication address (00h) and the communication address (02h) are stored in the transmission source address 18b and the reception destination address 18c, respectively.

  The response request message (0-3) represents a response request message in which the communication address (00h) and the communication address (03h) are stored in the transmission source address 18b and the reception destination address 18c, respectively.

  The response message (1-0) represents a response message in which the communication address (01h) and the communication address (00h) are stored in the transmission source address 18b and the reception destination address 18c, respectively.

  When the ping state 52 is completed, the non-contact power transmission between the induction heating cooker 20 and the non-contact power receiving device 10a is changed to the identification state / setting state 53. When the setting is completed, the non-contact power transmission transitions to the power supply state 54 (see FIG. 3).

  FIG. 8A and FIG. 9A show the case where non-contact power transmission is performed to the non-contact power receiving device 10c placed in the first to fourth rows and the seventh to ninth rows of the induction heating cooker 20. It is a figure which shows operation to the input part. 8B and 9B are diagrams showing communication sequences when the operations shown in FIGS. 8A and 9A are performed, respectively.

  As shown in FIG. 8A, the user designates the display area 6 c on the input unit 6 by pressing the finger 31 against the input unit 6 and moving the finger 31 on the input unit 6. The display area 6c corresponds to an area 21c on the top surface 21 on which the non-contact power receiving device 10c is placed (see FIG. 4).

  That is, the control unit 2 associates the position on the input unit 6 with the position of the power supply unit 3 distributed in a planar shape, thereby connecting the power supply units 3 in the first row to the fourth row and the seventh column to the ninth column. The selected power supply unit 3d is selected.

  The induction heating cooker 20 sequentially transmits response request messages to the communication addresses of the non-contact power receiving devices 10a to 10c. However, at this stage, contactless power transmission to the contactless power receiving device 10c is still in the OFF state 51, and the contactless power receiving device 10c does not transmit a response message (see FIG. 8B).

  Next, as shown in FIG. 9A, when the user presses the arrow 6d displayed on the input unit 6 with the finger 31, the power supply unit 3 corresponding to the display area 6c has no contact with the communication address (03h). It operates in a non-contact power transmission (PT) mode for the power receiving device 10c. PT-ON (3) shown in FIG. 9A represents this state.

  At this time, the non-contact power transmission between the induction heating cooker 20 and the non-contact power receiving device 10c is in the ping state 52 shown in FIG.

  As illustrated in FIG. 9B, the induction heating cooker 20 in the ping state 52 sequentially transmits response request messages to the communication addresses of the non-contact power receiving apparatuses 10 a to 10 c.

  The communication unit 12 of the non-contact power receiving apparatus 10c transmits a response message in response to a response request message addressed to the communication address (03h) within a predetermined time.

  The communication unit 4 of the induction heating cooker 20 receives the transmitted response message. The control unit 2 of the induction heating cooker 20 has the non-contact power receiving device 10c placed on the area of the top surface 21 corresponding to the display area 6c based on the communication address included in the received response message. Recognize The control unit 2 associates the designated power supply unit 3d with the non-contact power receiving device 10c. This ends the ping state 52.

  In FIG. 9B, PT-ON indicates that the user has performed the operation shown in FIG. 9A. The response message (3-0) represents a response message in which the communication address (03h) and the communication address (00h) are stored in the transmission source address 18b and the reception destination address 18c, respectively.

  When the ping state 52 is completed, the non-contact power transmission between the induction heating cooker 20 and the non-contact power receiving device 10 c transitions to the identification state / setting state 53. When the setting is completed, the non-contact power transmission transitions to the power supply state 54 (see FIG. 3).

  In the present embodiment, three non-contact power receiving devices 10 are initially registered. However, the number of contactless power receiving devices 10 that are initially registered is not limited to this.

  As described above, according to the present embodiment, the communication unit 4 of the induction heating cooker 20 can communicate with the communication units 12 of the non-contact power receiving apparatuses 10. Thereby, the induction heating cooking appliance 20 can utilize arbitrary electric power feeding parts 3 for non-contact electric power transmission among the several electric power feeding parts 3 arrange | positioned at matrix form.

  In the above example, the power feeding coil and the power receiving coil have a circular shape. However, the feeding coil and the receiving coil may have an elliptical shape as shown in FIG.

[Initial registration]
The automatic assignment of communication addresses for initial registration will be described below. FIG. 11A is a plan view schematically showing a state of initial registration in the induction heating cooker 20. FIG. 11B is a diagram illustrating a communication sequence between the induction heating cooker 20 and the non-contact power receiving apparatus 10d in the initial registration.

  As shown in FIG. 11A, four power supply units of the first and second rows from the front of the power supply units 3 arranged in a matrix of 6 rows and 9 columns and the first and second columns from the left 3 is used in advance for initial registration. Hereinafter, an area on the top surface 21 located above the four power feeding units 3 is referred to as an initial registration position.

  The user or installer of the induction heating cooker 20 instructs the initial registration to the induction heating cooker 20 after placing the newly purchased non-contact power receiving device 10d at the initial registration position. The instruction for initial registration indicates, for example, pressing of an initial registration start key (not shown) displayed on the input unit 6.

  The non-contact power receiving device 10d has the same configuration as the non-contact power receiving devices 10a to 10c. However, the resonance circuit 11 included in the non-contact power receiving device 10d has a size enough to cover the four power supply units 3.

  As shown in FIG. 11B, the induction heating cooker 20 has a predetermined communication address (00h). Since it is before initial registration, the communication address of the non-contact power receiving device 10d is set to (FFh).

  As shown in FIGS. 11A and 11B, in the induction heating cooker 20, when the input unit 6 receives an instruction for initial registration, the four power feeding units 3 at the initial registration position are replaced by the communication unit 12 of the non-contact power receiving apparatus 10d. Transmits the power necessary to operate.

  The communication unit 4 means a transmission source address 18b, a reception address 18c, and a header 18d, a communication address (00h) of the induction heating cooker 20, a communication address (FFh) of the non-contact power receiving device 10d, and initial registration. A communication packet 18 for initial registration storing the codes is transmitted.

  In the non-contact power receiving apparatus 10d, the communication unit 12 receives the communication packet 18 transmitted from the communication unit 4. In response to the communication packet 18, the control unit 13 controls the communication unit 12 to transmit the communication packet 18 shown below.

  The communication packet 18 includes a source address 18b, a destination address 18c, a header 18d, a communication address (FFh) of the non-contact power receiving device 10d, a communication address (00h) of the induction heating cooker 20, and a non-contact power receiving device 10d. A code indicating that the device information is stored in the message 18e is stored.

  The device information of the non-contact power receiving device 10d includes the device ID 17, the rated power of the load 15, and the size of the power receiving coil included in the resonance circuit 8.

  In the induction heating cooker 20, when the communication unit 4 receives the configuration information, the control unit 2 compares the device ID 17 of the non-contact power receiving device 10d with the device ID that has been initially registered.

  When the communication unit 4 receives the communication packet 18 from the contactless power receiving device 10d that is initially registered, the control unit 2 includes the device ID 17 included in the communication packet 18 and the device ID 17 of the contactless power receiving device 10 that has been initially registered. And compare.

  If they match, the communication unit 4 transmits the communication packet 18 in which the registered communication address is stored in the message 18e to the contactless power receiving device 10d. If they do not match, the communication unit 4 transmits the communication packet 18 storing the automatically assigned new communication address in the message 18e to the contactless power receiving device 10d.

  Thereby, the communication address of the non-contact power receiving apparatus 10d is updated to the transmitted communication address, and the initial registration is completed. Thereafter, the non-contact power receiving apparatus 10d communicates with the induction heating cooker 20 using the updated communication address.

  FIG. 11B shows that the communication address (04h) is assigned to the contactless power receiving device 10d because 01h, 02h, and 03h have already been assigned as the communication addresses of the contactless power receiving devices 10a to 10c, respectively.

  In the present embodiment, the case where the contactless power receiving device 10d is newly purchased and the initial registration of the contactless power receiving device 10d is performed by the user or the installer has been described.

  For example, if the induction heating cooker 20 and the non-contact power receiving device 10d are sold in combination, the initial registration hassle by registering the non-contact power receiving device 10d in the induction heating cooker 20 in advance during the manufacturing process. It can be omitted.

  The device ID 17 of the non-contact power receiving device 10d may be defined by combining, for example, a manufacturer code assigned to each manufacturer by a standards organization and a code unique to each manufacturer.

  As described above, the present disclosure is particularly useful in a non-contact power transmission system in which the non-contact power feeding device is an induction heating cooker having a plurality of power feeding units arranged in a matrix.

DESCRIPTION OF SYMBOLS 1 Non-contact electric power feeding apparatus 2,13 Control part 3,3a, 3b, 3c Power feeding part 3d Power feeding part 4d 12 Communication part 5 Memory | storage part 6 Input part 6a, 6b, 6c Display area 6d Arrow 7 High frequency power supply part 8 , 11, 405a, 405b, 421, 422 Resonant circuit 10, 10a, 10b, 10c, 10d Non-contact power receiving device 14 Power meter 15, 509 Load 16 Power circuit 17 Device ID
18 Communication packet 18a, 701 Preamble 18b Source address 18c Receiver address 18d, 702 Header 18e, 703 Message 18f, 704 Checksum 20 Induction heating cooker 21 Top surface 21a, 21b, 21c Area 30 Pan 51 Off state 52, 602 Ping state 53,603 Identification state / setting state 54,604 Power supply state 401 Remote control device 420 Device main body 423 Communication circuit 426 Heating coil 501 Base station 502 Mobile device 504a, 504b Power transmitter 505 Power receiver 506a, 506b Power conversion unit 507 Power pickup unit 508a, 508b, 508c Communication control unit 601 Selection state

Claims (3)

A non-contact power feeding device that transmits power to a non-contact power receiving device in a non-contact manner,
A plurality of power feeding units each having a resonant circuit and configured to transmit power;
An input unit configured to allow a user to select at least one designated power supply unit of the plurality of power supply units; and
A power supply side communication unit configured to transmit a response request message including a communication address assigned to the non-contact power receiving device, and to receive a response message including the communication address;
A non-contact power supply device comprising: a control unit on a power supply side configured to operate the specified power supply unit and associate the specified power supply unit and the non-contact power receiving device based on the communication address . The plurality of power feeding units are arranged so as to be distributed in a planar shape,
The input unit includes a planar display unit, and is configured to select the designated power supply unit by associating a position in the display unit with a position of each of the plurality of power supply units. Item 2. The non-contact power supply device according to Item 1. The contactless power supply device according to claim 1;
A non-contact power receiving device that receives power transmitted in a non-contact manner from the non-contact power feeding device,
A power receiving unit having a resonant circuit and configured to receive transmitted power;
A communication unit on a power receiving side configured to receive the response request message and transmit a response message including a communication address assigned to the contactless power receiving device;
When the power receiving unit receives the power, the power receiving side control unit configured to control the power receiving side communication unit to transmit the response message within a predetermined time; and
A non-contact power receiving device having
A non-contact power transmission system.