CN107591649B - Charging plug and charging pile comprising same - Google Patents

Abstract

The invention discloses a charging plug which comprises a shell and a mechanical lock. The mechanical lock has a first end, a second end, and a pivot point located between the first and second ends, with a first engagement formed on the first end. During charging, the charging plug is plugged into the charging socket, and the first joint part of the charging plug and the second joint part of the charging socket are locked together. At the end of charging, the lock between the first and second engagement portions may be released by pressing the second end of the mechanical lock to the unlocked position. The charging plug also comprises an electronic lock arranged on the shell, wherein the electronic lock comprises a sliding block and a driver suitable for driving the sliding block to slide. During charging, the slider is slid to a first position that prevents the second end of the mechanical lock from being pressed downward to the unlocked position to prevent the first and second engagement portions from being accidentally unlocked. Therefore, the reliable locking of the charging plug can be conveniently realized through the sliding block with smaller volume, thereby being beneficial to the miniaturization of the charging plug and reducing the manufacturing cost.

Description

Charging plug and charging pile including the charging plug

Technical field

The present invention relates to a charging plug and a charging pile including the charging plug, and in particular to a charging plug and charging pile suitable for charging electric vehicles.

Background technique

Fuel vehicles emit large amounts of pollutants and are the main cause of air pollution. Especially in international metropolises, the problem of air pollution caused by fuel vehicles is even more prominent. In order to protect the environment and reduce air pollution. Countries are committed to developing electric vehicles because electric vehicles directly use electricity and do not emit any pollutants.

Electric vehicles need to be charged frequently. In order to facilitate the charging of electric vehicles, at present, electric vehicles are generally charged through a charging pile with a charging plug (or called a charging gun). When charging, the charging plug is directly inserted into the charging socket on the electric vehicle to complete the charging of the electric vehicle, which is very convenient.

According to national standard requirements, when charging an electric vehicle, in order to ensure charging safety, the charging plug must be reliably locked to the charging socket of the electric vehicle during the charging process and cannot be unplugged from the charging socket of the electric vehicle. In the prior art, a mechanical locking device and an electronic safety device (or electronic lock) are generally installed on the charging plug. When charging, the mechanical locking device on the charging plug is locked with the charging socket on the electric vehicle, and the electronic safety device keeps the mechanical locking device in a locked state to prevent the mechanical locking device from being accidentally unlocked.

In the prior art, the electronic safety device on the charging plug generally uses an electromagnet, and the linear motion of the electromagnet is used to achieve reliable locking of the mechanical locking device. However, this electronic safety device occupies a large space, which is not conducive to miniaturization of the charging plug, and the cost is high.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies existing in the prior art.

According to one aspect of the present invention, a charging plug is provided, including: a housing; and a mechanical lock pivotally mounted on the housing. The mechanical lock has a first end, a second end and a pivot point located between the first end and the second end, and a first joint portion is formed on the first end of the mechanical lock. During charging, the front end of the charging plug is inserted into the charging socket, and the first engaging portion on the charging plug and the second engaging portion on the charging socket are locked together. At the end of charging, the lock between the first engaging portion and the second engaging portion can be released by pressing the second end of the mechanical lock downward to the unlocking position. The charging plug also includes an electronic lock installed on the housing. The electronic lock includes: a slider; and a driver adapted to drive the slider to slide. During charging, the slider is slid to a first position that prevents the second end of the mechanical lock from being pressed down to the unlocked position, thereby preventing the first engaging portion and the second engaging portion from being pressed. Accidentally unlocked.

According to an exemplary embodiment of the present invention, at the end of charging, the slider is slid to a second position that allows the second end of the mechanical lock to be pressed down to the unlocking position, thereby allowing the release of all locking between the first joint part and the second joint part.

According to another exemplary embodiment of the present invention, the electronic lock further includes a position detection device adapted to detect the position of the slider.

According to another exemplary embodiment of the present invention, the position detection device includes a micro switch; when the slider is slid to the first position, the slider does not contact the micro switch, The micro switch is in an off state; when the slider is slid to the second position, the slider presses the micro switch, causing the micro switch to switch from the off state to closed state.

According to another exemplary embodiment of the present invention, a bottom protrusion is formed on the bottom of the second end of the mechanical lock; when the slider is slid to the first position, the slider is located at the directly below the bottom protrusion and directly against the bottom protrusion to prevent the second end of the mechanical lock from being pressed.

According to another exemplary embodiment of the present invention, a bottom protrusion is formed on the bottom of the second end of the mechanical lock; when the slider is slid to the first position, the slider is located at the There is a first gap directly below the bottom protrusion and between it and the bottom protrusion, and the first gap is smaller than the gap required to press the second end of the mechanical lock downward to the unlocking position, so as to The second end of the mechanical lock is prevented from being pressed down to the unlocked position.

According to another exemplary embodiment of the present invention, when the slider is slid to the second position, the slider is biased to one side of the bottom protrusion and in contact with the bottom protrusion. Offset by a predetermined distance to allow the second end of the mechanical lock to be pressed down to the unlocked position.

According to another exemplary embodiment of the present invention, a guide slide rail is formed on the housing, and the slide block is assembled on the guide slide rail of the housing.

According to another exemplary embodiment of the present invention, the driver is a rotary driver, the driver has an output shaft, and the output shaft is threadedly connected to the slider to convert the rotational motion of the output shaft. into the linear motion of the slider.

According to another exemplary embodiment of the present invention, an external thread is formed on the output shaft of the driver, a threaded hole is formed on the slider, and the output shaft is threadedly connected to the thread of the slider. hole.

According to another exemplary embodiment of the present invention, the driver is a micromotor.

According to another exemplary embodiment of the present invention, a vent is formed on the housing of the charging plug, and a breathable waterproof and dustproof film is provided on the vent to allow hot air generated in the housing to It can be discharged to the outside of the casing via the breathable waterproof and dustproof membrane, but external water and dust are prevented from entering the casing via the breathable waterproof and dustproof membrane.

According to another exemplary embodiment of the present invention, an installation groove corresponding to the mechanical lock is formed on the housing, and the mechanical lock is accommodated and installed in the installation groove of the housing.

According to another exemplary embodiment of the present invention, the vent is formed on the bottom wall of the mounting groove of the housing, and has a gap between the mounting groove and the mechanical lock to allow access from all The hot air discharged by the breathable waterproof and dustproof film can enter the external atmosphere through the gap.

According to another exemplary embodiment of the present invention, a pivot axis is formed on one of the mounting groove of the housing and the mechanical lock; and on the other of the mounting groove of the housing and the mechanical lock A pivot hole is formed on the upper body; the pivot shaft is assembled in the pivot hole so as to pivotally install the mechanical lock into the installation groove of the housing.

According to another exemplary embodiment of the present invention, the charging plug further includes a return spring, and the return spring is disposed in the installation groove of the housing; when a force applied to the second end of the mechanical lock When the pressing force disappears, the mechanical lock returns to its initial position under the action of the return spring.

According to another exemplary embodiment of the present invention, the electronic lock is accommodated in an installation groove of the housing.

According to another exemplary embodiment of the present invention, the charging plug is suitable for charging an electric vehicle.

According to one aspect of the present invention, a charging pile is provided, characterized in that the charging pile includes the aforementioned charging plug.

In the foregoing embodiments according to the present invention, when the slider is slid to a predetermined position, the charging plug can be reliably locked to the charging socket. Therefore, the charging plug can be easily and reliably locked through the smaller slider, which is beneficial to the miniaturization of the charging plug and reduces the manufacturing cost.

From the following description of the present invention with reference to the accompanying drawings, other objects and advantages of the present invention will be apparent and help to have a comprehensive understanding of the present invention.

Description of the drawings

Figure 1 shows a schematic assembly diagram of a charging plug according to an exemplary embodiment of the present invention;

Figure 2 shows an exploded schematic view of a charging plug according to an exemplary embodiment of the present invention;

Figure 3 shows a three-dimensional schematic view of the electronic lock in the charging plug shown in Figures 1 and 2;

Figure 4 shows a cross-sectional view of the charging plug shown in Figure 1, wherein the charging plug is in a charging state and the slider of the electronic lock is in the first position;

Figure 5 shows a partially enlarged schematic view of the charging plug shown in Figure 4, in which the charging plug is in a charging state and the slider of the electronic lock is in the first position;

Figure 6 shows a cross-sectional view of the charging plug shown in Figure 1, wherein the charging plug is in a non-charging state and the slider of the electronic lock is in the second position; and

FIG. 7 shows a partially enlarged schematic view of the charging plug shown in FIG. 6 , in which the charging plug is in a non-charging state and the slider of the electronic lock is in the second position.

Detailed ways

The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numbers indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be understood as a limitation of the present invention.

Additionally, in the following detailed description, for convenience of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are illustrated in order to simplify the drawings.

According to a general technical concept of the present invention, a charging plug is provided, including: a housing; and a mechanical lock pivotally installed on the housing. The mechanical lock has a first end, a second end and a pivot point located between the first end and the second end, and a first joint portion is formed on the first end of the mechanical lock. During charging, the front end of the charging plug is inserted into the charging socket, and the first engaging portion on the charging plug and the second engaging portion on the charging socket are locked together. At the end of charging, the lock between the first engaging portion and the second engaging portion can be released by pressing the second end of the mechanical lock downward to the unlocking position. The charging plug also includes an electronic lock installed on the housing. The electronic lock includes: a slider; and a driver adapted to drive the slider to slide. During charging, the slider is slid to a first position that prevents the second end of the mechanical lock from being pressed down to the unlocked position, thereby preventing the first engaging portion and the second engaging portion from being pressed. Accidentally unlocked.

Figure 1 shows an assembly schematic diagram of a charging plug according to an exemplary embodiment of the present invention; Figure 2 shows an exploded schematic diagram of a charging plug according to an exemplary embodiment of the present invention; Figure 3 shows the components shown in Figures 1 and 2 A three-dimensional diagram of the electronic lock in the charging plug.

As shown in Figures 1, 2 and 3, in the illustrated embodiment, the charging plug mainly includes a housing 100, a mechanical lock 200 and electronic locks 310, 30, 330. The mechanical lock 200 is pivotally mounted on the housing 100 . The mechanical lock 200 has a first end 210 , a second end 220 , and a pivot point located between the first end 210 and the second end 220 . A first engaging portion 211 is formed on the first end 210 of the mechanical lock 200 . In one embodiment of the present invention, the first joint part 211 may be a hook part. The electronic locks 310, 320, and 330 are installed on the housing 100.

Figure 4 shows a cross-sectional view of the charging plug shown in Figure 1, where the charging plug is in a charging state and the slider 320 of the electronic lock is in the first position; Figure 5 shows a partial enlarged schematic view of the charging plug shown in Figure 4, where the charging plug The plug is in the charging state and the slider 320 of the electronic lock is in the first position.

As shown in Figures 4 and 5, in the illustrated embodiment, when the charging plug is in the charging state, the front end 101 of the charging plug is plugged into the charging socket (not shown), and the first The joint part 211 is locked together with the second joint part (not shown) on the charging socket.

Please continue to refer to Figures 4 and 5. In the illustrated embodiment, the aforementioned electronic lock includes: a slider 320; and a driver 310, adapted to drive the slider 320 to slide.

As shown in FIGS. 4 and 5 , in the illustrated embodiment, when the charging plug is in the charging state, the slider 320 is slid to prevent the second end 220 of the mechanical lock 200 from being pressed down to the first unlocking position. position, thereby preventing the first joint part 211 and the second joint part from being accidentally unlocked.

FIG. 6 shows a cross-sectional view of the charging plug shown in FIG. 1 , in which the charging plug is in a non-charging state and the slider 320 of the electronic lock is in the second position; and FIG. 7 shows a partial enlarged schematic view of the charging plug shown in FIG. 6 , in which , the charging plug is in a non-charging state, and the slider 320 of the electronic lock is in the second position.

As shown in FIGS. 6 and 7 , in the illustrated embodiment, when the charging plug is in a non-charging state, the slider 320 is slid to a third position that allows the second end 220 of the mechanical lock 200 to be pressed down to the unlocking position. two positions, thereby allowing the locking between the first engaging portion 211 and the second engaging portion to be released.

As shown in FIGS. 3 to 7 , in the illustrated embodiment, the electronic lock further includes a position detection device 330 adapted to detect the position of the slider 320 .

In an exemplary embodiment of the present invention, as shown in FIGS. 3 to 7 , the aforementioned position detection device 330 includes a micro switch.

In one embodiment of the present invention, when the slider 320 is slid to the first position shown in Figures 4 and 5, the slider 320 is not in contact with the microswitch 330, and the microswitch is in an off state. When the slider 320 is slid to the second position shown in FIGS. 6 and 7 , the slider 320 presses the microswitch 330 so that the microswitch 330 switches from an off state to a closed state.

In this way, the position of the slider 320 can be determined according to the state of the micro switch 330 . In the illustrated embodiment, when the micro switch 330 is in the closed state, it can be determined that the slider 320 is in the first position. When the micro switch 330 is in the off state, it can be determined that the slider 320 is in the second position. .

As shown in FIGS. 4 to 7 , in an exemplary embodiment of the present invention, a bottom protrusion 221 is formed on the bottom of the second end 220 of the mechanical lock 200 .

As shown in FIGS. 4 and 5 , when the slider 320 is slid to the first position, the slider 320 is located directly below the bottom protrusion 221 and directly abuts against the bottom protrusion 221 to prevent the mechanical lock 200 from moving. The second terminal 220 is pressed.

However, the present invention is not limited to the illustrated embodiment. In another embodiment of the present invention, when the slider 320 is slid to the first position shown in FIGS. 4 and 5 , the slider 320 is located on the bottom protrusion. There is a first gap directly below 221 and between the bottom protrusion 221, and the first gap is smaller than the gap required to press the second end 220 of the mechanical lock 200 down to the unlocking position to prevent the second end of the mechanical lock 200 from moving. The two ends 220 are pressed down to the unlocking position.

As shown in FIGS. 6 and 7 , when the slider 320 is slid to the second position, the slider 320 is biased to one side of the bottom protrusion 221 and is offset from the bottom protrusion 221 by a predetermined distance to allow mechanical locking. The second end 220 of 200 is pressed down to the unlocked position.

In one embodiment of the present invention, a guide slide rail (not shown) is formed on the housing 100 , and the slider 320 is assembled on the guide slide rail of the housing 100 . In this way, the driver 310 can drive the slider 320 to slide back and forth along the guide slide rail on the housing 100 .

As shown in FIG. 3 , FIG. 5 and FIG. 7 , in the illustrated embodiment, the driver 310 is a rotary driver. For example, the driver 310 may be a micro motor. As clearly shown in FIG. 3 , the driver 310 has an output shaft 311 , and the output shaft 311 is threadedly connected to the slider 320 . In this way, the rotational motion of the output shaft 311 can be converted into the linear motion of the slider 320.

As shown in Figures 3, 5 and 7, in the illustrated embodiment, external threads are formed on the output shaft 311 of the driver 310, a threaded hole is formed on the slider 320, and the output shaft 311 is threadedly connected to In the threaded hole of the slider 320.

As shown in Figure 2, in an exemplary embodiment of the present invention, a ventilation opening 120 is formed on the housing 100 of the charging plug, and a breathable, waterproof and dustproof film 121 is provided on the ventilation opening 120 to allow the housing to The hot air generated in the body 100 can be discharged to the outside of the casing 100 via the breathable waterproof and dustproof membrane 121 , but external water and dust are prevented from entering the casing 100 via the breathable waterproof and dustproof membrane 121 .

As shown in Figures 1 and 2, in an exemplary embodiment of the present invention, a mounting groove 110 corresponding to the mechanical lock 200 is formed on the housing 100, and the mechanical lock 200 is accommodated and installed on the housing 100. installed in slot 110.

As shown in FIGS. 1 and 2 , in the illustrated embodiment, the vent 120 is formed on the bottom wall of the mounting groove 110 of the housing 100 , and there is a gap between the mounting groove 110 and the mechanical lock 200 to allow The hot air discharged from the breathable waterproof and dustproof membrane 121 can enter the external atmosphere through the gap.

As shown in FIGS. 1 and 2 , in the illustrated embodiment, a pivot shaft 130 is formed on one of the mounting groove 110 of the housing 100 and the mechanical lock 200 ; A pivot hole 230 is formed on the other one; the pivot shaft 130 is assembled in the pivot hole 230 so as to pivotally install the mechanical lock 200 into the installation groove 110 of the housing 100 .

As shown in FIGS. 1 and 2 , in the illustrated embodiment, the charging plug further includes a return spring 400 , which is disposed in the mounting groove 110 of the housing 100 ; when applied to the second end of the mechanical lock 200 When the pressing force on 220 disappears, the mechanical lock 200 returns to the initial position under the action of the return spring 150 .

As shown in FIGS. 2 , 4 and 6 , in the illustrated embodiment, the electronic locks 310 , 320 , and 330 are received in the mounting groove 110 of the housing 100 .

In an exemplary embodiment of the present invention, as shown in FIGS. 1 to 7 , the aforementioned charging plug is suitable for charging electric vehicles or other electric equipment.

In another exemplary embodiment of the present invention, a charging pile is also disclosed, which may include the charging plug in any of the preceding embodiments.

The charging plug and charging pile in the foregoing embodiments of the present invention can be used to charge electric vehicles or other electric equipment.

Those skilled in the art can understand that the above-described embodiments are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments do not conflict in structure or principle. can be freely combined.

Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation of the present invention.

While some embodiments of the present general inventive concept have been shown and described, those of ordinary skill in the art will understand that changes may be made in these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element reference signs in the claims should not be construed as limiting the scope of the invention.

Claims (16)

1. A charging plug, comprising:

a housing (100); and

a mechanical lock (200) pivotally mounted on the housing (100),

wherein,

the mechanical lock (200) has a first end (210), a second end (220) and a pivot point between the first end (210) and the second end (220), a first engagement portion (211) is formed on the first end (210) of the mechanical lock (200),

during charging, the front end part (101) of the charging plug is plugged into a charging socket, and a first joint part (211) on the charging plug is locked with a second joint part on the charging socket,

at the end of charging, the locking between the first engagement portion (211) and the second engagement portion may be released by pressing the second end (220) of the mechanical lock (200) downwards to an unlocked position,

the method is characterized in that:

the charging plug further includes an electronic lock mounted on the housing (100), the electronic lock including:

a slider (320);

a driver (310) adapted to drive the slider (320) to slide,

during charging, the slider (320) is slid to a first position that prevents the second end (220) of the mechanical lock (200) from being pressed downward to the unlocked position, thereby preventing the first engagement portion (211) from being accidentally unlocked from the second engagement portion; and

position detection means positioned in said housing adjacent to said slider and adapted to detect at least whether said slider (320) is in said first position preventing said second end (220) of said mechanical lock (200) from being pressed down to said unlocked position,

at the end of charging, the slider (320) is slid to a second position allowing the second end (220) of the mechanical lock (200) to be pressed down to the unlocking position, thereby allowing unlocking between the first engagement portion (211) and the second engagement portion,

the position detection means is further adapted to detect whether the slider (320) is in the second position, and

the position detection device comprises a micro switch (330);

when the slider (320) is slid to the first position, the slider (320) is not in contact with the micro switch (330), the micro switch being in an off state;

when the slider (320) is slid to the second position, the slider (320) presses the micro-switch (330) such that the micro-switch (330) switches from the open state to the closed state.

2. A charging plug according to claim 1, wherein:

-forming a bottom protrusion (221) on the bottom of the second end (220) of the mechanical lock (200);

when the slider (320) is slid to the first position, the slider (320) is located directly below the bottom protrusion (221) and directly against the bottom protrusion (221) to prevent the second end (220) of the mechanical lock (200) from being depressed.

3. A charging plug according to claim 1, wherein:

-forming a bottom protrusion (221) on the bottom of the second end (220) of the mechanical lock (200);

when the slider (320) is slid to the first position, the slider (320) is located directly below the bottom protrusion (221) and has a first clearance with the bottom protrusion (221) that is less than a clearance required to press the second end (220) of the mechanical lock (200) downward to the unlocked position to prevent the second end (220) of the mechanical lock (200) from being pressed downward to the unlocked position.

4. A charging plug according to claim 2 or 3, wherein:

when the slider (320) is slid to the second position, the slider (320) is biased to one side of the bottom protrusion (221) and offset from the bottom protrusion (221) by a predetermined distance to allow the second end (220) of the mechanical lock (200) to be pressed downward to the unlocked position.

5. A charging plug according to claim 1, wherein:

a guide rail is formed on the housing (100), and the slider (320) is fitted on the guide rail of the housing (100).

6. A charging plug according to claim 5, wherein:

the driver (310) is a rotary driver, the driver (310) is provided with an output shaft (311), and the output shaft (311) is in threaded connection with the sliding block (320) so as to convert the rotary motion of the output shaft (311) into the linear motion of the sliding block (320).

7. The charging plug according to claim 6, wherein:

an external thread is formed on an output shaft (311) of the driver (310), a screw hole is formed on the slider (320), and the output shaft (311) is screw-coupled to the screw hole of the slider (320).

8. The charging plug according to claim 6, wherein: the driver (310) is a miniature motor.

9. A charging plug according to claim 1, wherein:

a vent (120) is formed on a housing (100) of the charging plug, and a ventilation waterproof and dustproof film (121) is provided on the vent (120) to allow hot air generated in the housing (100) to be discharged to the outside of the housing (100) via the ventilation waterproof and dustproof film (121), but to prevent external water and dust from entering the housing (100) via the ventilation waterproof and dustproof film (121).

10. The charging plug according to claim 9, wherein:

a mounting groove (110) corresponding to the mechanical lock (200) is formed on the housing (100), and the mechanical lock (200) is accommodated and mounted in the mounting groove (110) of the housing (100).

11. The charging plug according to claim 10, wherein:

the vent (120) is formed on the bottom wall of the mounting groove (110) of the housing (100) with a gap between the mounting groove (110) and the mechanical lock (200) to allow hot air discharged from the air-permeable waterproof dustproof film (121) to enter the outside atmosphere through the gap.

12. The charging plug according to claim 11, wherein:

-forming a pivot shaft (130) on one of the mounting groove (110) of the housing (100) and the mechanical lock (200);

-forming a pivot hole (230) in the other of the mounting slot (110) of the housing (100) and the mechanical lock (200);

the pivot shaft (130) fits in the pivot hole (230) to pivotally mount the mechanical lock (200) into the mounting slot (110) of the housing (100).

13. The charging plug according to claim 10, wherein:

the charging plug further comprises a return spring (400), the return spring (400) being arranged in a mounting groove (110) of the housing (100);

when the pressing force applied to the second end (220) of the mechanical lock (200) disappears, the mechanical lock (200) is restored to the original position by the return spring (400).

14. The charging plug according to claim 10, wherein:

the electronic lock is received in a mounting groove (110) of the housing (100).

15. A charging plug according to claim 1, wherein: the charging plug is suitable for charging the electric automobile.

16. A fill electric pile, its characterized in that: the charging pile comprises the charging plug of any one of claims 1 to 15.