WO2019062984A1 - First charging connector, second charging connector, vehicle and charging system - Google Patents

Abstract

Provided is a first charging connector (100), comprising a first housing (10) and a first wiring terminal (20). The first wiring terminal (20) is fixed in the first housing (10). The first wiring terminal (20) comprises an accommodation chamber (21), wherein the accommodation chamber (21) can accommodate a liquid metal (30), and an end of the accommodation chamber (21) is open and is provided with a protruding post (22). Further provided are a second charging connector (200), a vehicle and a charging system.

Description

First charging connector, second charging connector, and vehicle and charging system

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. "201710945023.3" filed on September 30, 2017 by the BYD Co., Ltd., entitled "Charging Connector, Charging Gun, and Vehicle and Charging System".

Technical field

The present application relates to the field of vehicle charging technologies, and in particular, to a first charging connector, a second charging connector, a vehicle including a first charging connector or a second charging connector, and a first charging connector and a second charging The charging system of the connector.

Background technique

At present, due to energy and environmental issues, the explosive growth of new energy vehicles is promoted, and the number of new energy vehicles is also rising. Compared with traditional fuel vehicles, new energy vehicles have great advantages in energy saving and environmental protection. However, electric vehicles have long charging cycles, but they have long been criticized.

At this stage, a method of increasing the charging power to shorten the charging time is widely used. The problem with this is that due to the excessive current, the terminal of the charging socket is hot, which causes the charging terminal to burn out or the charging problem is faulty, so that the whole vehicle cannot be charged normally, and the charging safety cannot be effectively guaranteed.

Summary of the invention

The present application aims to solve at least one of the technical problems in the related art to some extent. To this end, the present application proposes a first charging connector that can effectively reduce the operating temperature of the first terminal.

The present application further proposes a second charging connector.

The application further proposes a vehicle.

The present application further proposes a charging system.

The first charging connector according to the present application includes: a first housing; a first terminal, the first terminal is fixed in the first housing, the first terminal includes: a receiving chamber, The receiving chamber can accommodate liquid metal, and the outer end of the receiving chamber is open and provided with a raised column.

Therefore, by providing the accommodating chamber, the first terminal can accommodate the liquid metal, and the heat of the liquid metal is less, so that the operating temperature of the first terminal can be effectively reduced, and the first wiring can be made by providing the protruding column. The terminal can effectively interface with the second terminal and is filled with liquid metal, so that the charging safety of the vehicle can be achieved.

The second charging connector according to the present application includes: a second housing; a second terminal, the second terminal is disposed in the second housing, the second terminal includes: a liquid chamber, and a second a control valve and a sealing plug, the liquid chamber may be filled with liquid metal, the liquid chamber has an opening, the second control valve is disposed in the liquid chamber and connected to the sealing plug, and the second control valve controls The sealing plug selectively seals the opening.

A vehicle according to the present application includes the first charging connector or the second charging connector.

A charging system according to the present application, comprising: the first charging connector; the second charging connector, the boss can push the sealing plug to make liquid metal in the receiving chamber and Flow between the liquid chambers.

DRAWINGS

1 is a schematic view of docking a first charging connector and a second charging connector according to an embodiment of the present application;

2 is an exploded view of a second charging connector in accordance with an embodiment of the present application;

3 is a cross-sectional view of a second charging connector in accordance with an embodiment of the present application;

4 is a partial structural schematic view of a second charging connector according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a first charging connector according to an embodiment of the present application; FIG.

Figure 6 is a cross-sectional view of a first charging connector in accordance with an embodiment of the present application;

7 is a cross-sectional view of a first terminal and a second terminal docked according to an embodiment of the present application;

8 is a cross-sectional view of a first terminal and a second terminal unbutted according to an embodiment of the present application;

Figure 9 is a partial schematic view of the piston and the inlet passage;

10 is a schematic diagram of a charging system in accordance with an embodiment of the present application;

Figure 11 is a schematic illustration of a vehicle in accordance with one embodiment of the present application;

Figure 12 is a schematic illustration of a vehicle in accordance with another embodiment of the present application.

Reference mark:

The first charging connector 100;

First housing 10;

a first connection terminal 20; a receiving chamber 21; a raised column 22; a liquid leakage hole 23; a first return passage 24;

Liquid metal 30;

Pump body 40; liquid storage tank 50; first control valve 60; charging harness 70; first sealing ring 80; filter 90; power distribution module 110;

a second charging connector 200;

a second housing 210; a second terminal 220; a liquid chamber 221; a second control valve 230;

Valve seat 231; valve core 232; elastic member 234;

a sealing plug 240; a tapered opening 250; a sensor 260; a second sealing ring 270; a second return passage 280; a piston 290; a liquid inlet passage 291;

Charging pile 300;

Vehicle 1000.

Detailed ways

A charging system according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 12, the charging system according to the embodiment of the present application may include: a first charging connector 100 and a second charging connector 200, and the first charging connector 100 and the second charging connector 200 may be docked. One of the first charging connector 100 and the second charging connector 200 is a charging socket, and the other of the first charging connector 100 and the second charging connector 200 is a charging gun, and the charging socket can also be charged with the power battery. The wire harness 70 is connected such that the charging cabinet can charge the power battery after the charging socket and the charging gun are docked.

The first charging connector 100 and the second charging connector 200 are separately described below.

As shown in FIG. 1, the first charging connector 100 includes a first housing 10 and a first terminal 20, and the first terminal 20 is fixed in the first housing 10, so that the first housing 10 can protect and The function of the first terminal 20 is fixed, wherein the first terminal 20 is plural, and the plurality of first terminals 20 are arranged in pairs. For example, the first terminal 20 may be two, and the first terminal 20 may be It includes a positive terminal and a negative terminal that transmit current. This terminal 20 is suitable for a DC charging port.

Similarly, the charging port of the AC charging port is also in pairs, and may be multiple. The principle is the same as above, and the application can still be implemented.

As shown in FIG. 5 and FIG. 6, the first terminal 20 includes: a accommodating chamber 21 in which the liquid metal 30 can be accommodated, wherein the liquid metal has super-thermal conductivity and super-conductivity, and the vehicle is in a high-power charging process. By disposing the liquid metal in the accommodating chamber 21, the first terminal 20 can withstand a large current during operation, and also does not generate excessive resistance heat when the first terminal 20 operates, thereby Effectively solve the problem of burning of the terminal block, thereby improving the use and safety of the vehicle.

The outer end of the accommodating chamber 21 is open, and the outer end of the accommodating chamber 21 is provided with a protruding column 22, and the outer end, that is, the receiving chamber 21 is away from the end of the charging harness, and the outer end of the accommodating chamber 21 may be provided with an inwardly extending plate. The plate is a non-closed plate having a liquid leakage hole 23 formed therein, and the boss column 22 is mounted on the plate.

The second charging connector 200 can also accommodate the liquid metal 30. The second charging connector 200 is provided with an openable and sealing sealing plug 240. The protruding post 22 is adapted to push the sealing liquid metal in the second charging connector 200. 30 sealing plug 240. It can be understood that after the protruding post 22 pushes the sealing plug 240 away, the liquid metal 30 located in the first charging connector 100 or the second charging connector 200 can flow to the other side, so that the other space can also be filled. The liquid metal 30 and the liquid metal 30 have low heat generation due to their own properties, so that the first charging connector 100 and the second charging connector 200 can be reliably charged, and the operating temperature of the first terminal 20 can be effectively reduced. 30 is also safe to use.

According to an alternative embodiment of the present application, the first charging connector 100 may further include a pump body 40 and a liquid storage tank 50 connected between the accommodating chamber 21 and the liquid storage tank 50. The pump body 40 can be a two-way pump body 40, that is, the pump body 40 can pump the liquid metal 30 from the liquid storage tank 50 to the accommodating chamber 21 when the first terminal 20 is in operation, and after the charging is completed, the pump body 40 The liquid metal can be pumped from the accommodating chamber 21 to the liquid storage tank 50.

A filter 90 may be disposed between the liquid storage tank 50 and the pump body 40, and the filter 90 may function as a filter.

Thus, by providing the accommodating chamber 21, the first terminal 20 can be accommodated with the liquid metal 30. The liquid metal 30 has a low heat generation due to its own nature, and can effectively lower the operating temperature of the first terminal 20, and The post 22 can enable the first terminal 20 to effectively interface with the second terminal 220 and is filled with the liquid metal 30 so that the charging safety of the vehicle can be achieved.

In addition, when not charging, the liquid metal 30 in the first charging connector 100 and the second charging connector 200 can be removed, so that the weights of the first charging connector 100 and the second charging connector 200 can be reduced, The operation of the first charging connector 100 and the second charging connector 200 is facilitated, thereby improving user comfort.

As shown in FIG. 6, one end of the accommodating chamber 21 is provided with a liquid leakage hole 23, and the liquid leakage hole 23 is provided around the boss column 22. The liquid leakage hole 23 causes the liquid metal 30 to flow in the first terminal 20 when the first charging connector 100 and the second charging connector 200 are inserted.

As shown in FIG. 7 and FIG. 8, the first charging connector 100 may further include: a first return passage 24, the first return passage 24 is disposed at an end of the accommodating chamber 21 near the leakage hole 23, and the first return passage 24 is located below the leak hole 23. Thus, when the charging is completed and the liquid metal 30 is withdrawn from the first charging connector 100, a portion of the liquid metal 30 may remain in the first terminal 20, and the first return channel 24 may cause the liquid metal 30 to flow back to the receiving chamber. Within 21, the leakage of the liquid metal 30 can be avoided, and the safety of the use of the liquid metal 30 can be ensured.

As shown in FIGS. 7 and 8, the first return passage 24 is configured in an arc shape. The backflow channel thus arranged can facilitate the backflow of the liquid metal 30 under the action of gravity, so that the leakage of the first terminal 20 can be effectively prevented.

According to an alternative embodiment of the present application, the first charging connector 100 may further include a pump body 40 and a liquid storage tank 50 connected between the accommodating chamber 21 and the liquid storage tank 50. The pump body 40 can be a two-way pump body 40, that is, the pump body 40 can pump the liquid metal 30 from the liquid storage tank 50 to the accommodating chamber 21 when the first terminal 20 is in operation, and after the charging is completed, the pump body 40 The liquid metal can be pumped from the accommodating chamber 21 to the liquid storage tank 50.

Wherein, a filter 90 may be disposed between the liquid storage tank 50 and the pump body 40, and the filter 90 may function as a filter.

As shown in FIG. 10 , the first charging connector 100 may further include: a power distribution module 110 , and the power distribution module 110 may supply power to the pump body 40 .

Also, as shown in FIG. 10, there may be two first terminals 20, and two of the pump body 40, the filter 90, and the reservoir tank 50, so that the two first terminals 20 can be effectively corresponding.

As shown in FIG. 10, the first charging connector 100 further includes a first control valve 60 disposed between the pump body 40 and the accommodating chamber 21. The first control valve 60 can effectively cut off the pump body 40 and the accommodating chamber 21, thereby preventing the liquid metal 30 from flowing freely between the pump body 40 and the accommodating chamber 21, thereby effectively ensuring the safety of use of the liquid metal 30, thereby avoiding There is a problem of leakage of the liquid metal 30.

The charging harness 70 may include an outer cladding connected to the accommodating chamber 21, and the inner cladding is filled with the liquid metal 30. Thus, the liquid metal 30 can be filled in the outer cladding and the accommodating chamber 21, so that the operating temperature of the charging harness 70 can be further lowered, and the operational reliability of the first charging connector 100 can be ensured.

As shown in FIGS. 5 and 6, the outer end of the accommodating chamber 21 is provided with a first seal ring 80, and the first seal ring 80 is disposed around the boss column 22. When the first charging connector 100 is docked with the second charging connector 200, the first sealing ring 80 can effectively abut the second terminal 220, so that the first terminal 20 and the second terminal 220 can be ensured. The effective sealing, in turn, can effectively avoid leakage of the liquid metal 30.

The second terminal 220 of the second charging connector 200 is provided with a second sealing ring 270, and the second sealing ring 270 can correspond to the first sealing ring 80, so that the first terminal 20 and the second can be better ensured. Sealing reliability between the terminals 220.

The second charging connector 200 will be described in detail below.

As shown in FIG. 2 to FIG. 4, the second charging connector 200 may include a second housing 210 and a second terminal 220. The second terminal 220 is disposed in the second housing 210, and the second terminal 220 includes a liquid chamber 221, a second control valve 230 and a sealing plug 240, the liquid chamber 221 may be filled with liquid metal 30, the liquid chamber 221 has an opening, the second control valve 230 is disposed in the liquid chamber 221, and the second control valve 230 Connected to the sealing plug 240, the sealing plug 240 on the second control valve 230 selectively seals the opening.

Thus, when the first terminal 20 and the second terminal 220 are butted, the boss 22 in the first terminal 20 can push the sealing plug 240 inwardly so that the accommodation chamber 21 and the liquid chamber 221 can be made Connected so that no matter which side has the liquid metal 30 therein, the liquid metal 30 can be pumped into the other side under the action of the pump body, thereby ensuring the between the first charging connector 100 and the second charging connector 200. Effective charging. Moreover, the first charging connector 100 and the second charging connector 200 are arranged in such a manner that the structure is simple and easy to fit.

As shown in Figures 7 and 8, the open configuration is a tapered opening 250 that tapers to the outside and the sealing plug 240 is configured to taper to match the opening. The tapered opening 250 can reduce the leakage of the liquid metal 30, and can facilitate the sealing of the sealing plug 240, so that the reliability of the docking of the first charging connector 100 and the second charging connector 200 can be better ensured.

As shown in FIG. 7 and FIG. 8, the second control valve 230 includes a valve seat 231, a valve core 232 and an elastic member 234. The valve seat 231 is disposed in the liquid chamber 221 and fixed to the second housing 210, and the valve core 232 is disposed. In the valve seat 231, an elastic member 234 is disposed between the valve seat 231 and the spool 232, and the spool 232 is connected to the sealing plug 240. The resilient member 234 can effectively limit the movement of the spool 232, thereby acting to limit the sealing plug 240, such that the sealing plug 240 effectively seals the tapered opening 250 and pushes the sealing plug 240 inwardly of the raised post 22. The elastic member 234 can make the sealing plug 240 open and uniform in speed and suitable.

As shown in FIGS. 7 and 8, the valve seat 231 has a peripheral wall, the end of which is configured as a tapered end that tapers to the outside, the valve body 232 includes a tapered portion, and the tapered portion can be fitted to the tapered end portion. on. That is to say, the valve seat 231 also has the function of restricting the movement of the valve core 232, so that the operational reliability of the valve core 232 can be ensured, and the sealing plug 240 can be ensured to switch between opening and sealing the tapered opening 250 naturally. Smooth.

The inner peripheral wall of the liquid chamber 221 is also configured as a stopper, and the stopper is configured to be tapered to fit the tapered portion. As shown in FIG. 8, when the sealing plug 240 seals the tapered opening 250 which is tapered outward, the tapered portion of the valve body 232 can be stopped against the inner peripheral wall of the liquid chamber 221, that is, the limiting portion, such that the liquid chamber The inner peripheral wall of the 221 can also function to restrict the movement of the spool 232, thereby ensuring the operational reliability of the second control valve 230 and ensuring the sealing reliability of the sealing plug 240.

As shown in FIGS. 7 and 8, the second charging connector 200 may further include a sensor 260 disposed on the valve seat 231, and the sensor 260 is configured to detect the elastic force of the elastic member 234. It can be understood that the sensor 260 can effectively detect the change of the elastic force of the elastic member 234 or the distance from the valve core, so that the position of the sealing plug 240 can be determined, and the sensor 260 can send a signal when the sealing plug 240 moves to the predetermined position. In order to start the operation of the pump body 40, the liquid metal 30 is then pumped into the first terminal 20 and the second terminal 220.

As shown in FIGS. 7 and 8, the liquid chamber 221 is provided with a second return passage 280 at a position close to the opening. The second return passage 280 can allow the liquid metal 30 to flow back into the liquid chamber 221, so that leakage of the liquid metal 30 can be effectively avoided.

It should be noted that the pump body 40, the filter 90 and the liquid storage tank 50 may also be connected to the second terminal 220. For example, the valve seat 231 of the second terminal 220 may be provided with a plurality of liquid inlets.

The charging pile 300 may be provided with a gas pipe, and the gas pipe is connected with the liquid passage at the charging pile 300, so that after the charging of the vehicle is completed, the charging pipe 300 can open the air pipe, so that the entire circuit communicates with the outside air, and the pump body 40 starts working. The liquid metal in the entire circuit is withdrawn, and after completion, the valve body closes the vent tube.

As shown in FIG. 8, a piston 290 may be disposed in the second return passage 280, and the piston 290 is also moved downward by the pressure of gravity and residual liquid, because the size of the tapered passage on the lower side of the second return passage 280 is larger than the size of the piston 290. Large, a gap will appear, and the residual liquid can be returned to the liquid chamber 221 through the slit, so that one-way passage can be realized to prevent liquid leakage, thereby serving as the second anti-leakage night treatment.

As shown in FIG. 8 and FIG. 9, the liquid chamber 221 may further include: a liquid inlet passage 291 located inside the second return passage 280, that is, the liquid inlet passage 291 is further away from the liquid chamber than the second return passage 280. The opening of 221 is open, and the liquid inlet passage 291 is in communication with the second return passage 280. It can be understood that the liquid inlet channel 291 can introduce liquid metal into the liquid chamber 221, the liquid metal can flow inward after flowing into the liquid chamber 221, and the liquid metal located in the second return channel 280 can also pass through the liquid inlet channel. 291 flows inward to the liquid chamber 221.

It should be noted that "inner" in the second charging connector 200 refers to a direction away from the opening of the liquid chamber 221, and "outer" refers to a direction in which the opening of the liquid chamber 221 is close.

As shown in FIGS. 8 and 9, a piston 290 is provided in the inlet passage 291, and the piston 290 is movable in the inlet passage 291 to open and close the inlet passage 291. The piston 290 can function to open and close the inlet passage 291. For example, when the liquid is introduced, the piston 290 can open the inlet passage 291, and the piston 290 can close the inlet passage 291 when the liquid is discharged.

The inner diameter of the inlet passage 291 is increased in a direction away from the second return passage 280, the piston 290 is tapered, and the bottom end of the inlet passage 291 is set as a limit end. The setting of the limiting end can prevent the piston 290 from coming out. It should be noted that when the liquid inlet channel 291 enters the liquid, the liquid metal pushes the piston 290 downward, the piston 290 opens the liquid inlet passage 291, and when the liquid is discharged outward, the piston 290 is upward. Move to close the inlet channel 291. Wherein, the piston 290 is a conical boss, and the circumferential surface of the conical boss and the circumferential surface of the liquid inlet passage 291 are coaxial and parallel, so that the piston 290 can move up and down within a certain range inside the liquid inlet passage 291.

Among them, the density of the piston 290 is smaller than the density of the liquid metal. Thus, the liquid metal can adjust the position of the piston 290 according to its own flow direction, so that the opening and closing adjustment of the liquid inlet passage 291 can be realized.

As shown in FIGS. 11 and 12, a vehicle 1000 according to an embodiment of the present application includes the first charging connector 100 of the above embodiment or the second charging connector 200 of the above embodiment.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification and features of various embodiments or examples may be combined and combined without departing from the scope of the invention.

While the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the present application. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (20)

1. A first charging connector, comprising:

   First housing

   a first terminal, the first terminal is fixed in the first housing, the first terminal includes: a receiving chamber, the receiving chamber can accommodate liquid metal, and an outer end of the receiving chamber is open Set with raised columns.
2. The first charging connector according to claim 1, wherein said one end of said accommodating chamber is provided with a liquid leakage hole, and said liquid leakage hole is disposed around said convex column.
3. The first charging connector according to claim 2, further comprising: a first return passage, the first return passage being disposed at the one end of the receiving chamber and located at the leak hole Below.
4. The first charging connector of claim 3 wherein said first return passage is configured in an arc shape.
5. The first charging connector according to any one of claims 1 to 4, further comprising: a pump body and a liquid storage tank, the pump body being connected between the accommodating chamber and the liquid storage tank .
6. The first charging connector of claim 5, further comprising: a first control valve disposed between the pump body and the receiving chamber.
7. The first charging connector according to any one of claims 1 to 6, further comprising: a charging harness, the charging harness comprising: an outer layer, the outer layer being connected to the receiving chamber and said The interior of the outer cladding is filled with the liquid metal.
8. The first charging connector according to any one of claims 1 to 7, wherein the one end of the accommodating chamber is provided with a first sealing ring, and the first sealing ring is disposed around the protruding post .
9. A second charging connector, comprising:

   Second housing

   a second terminal, the second terminal is disposed in the second housing, the second terminal includes: a liquid chamber, a second control valve, and a sealing plug, the liquid chamber may be filled with liquid metal, The liquid chamber has an opening, the second control valve is disposed within the liquid chamber and is coupled to the sealing plug, and the second control valve controls the sealing plug to selectively seal the opening.
10. The second charging connector of claim 9 wherein said opening is configured as a tapered opening, said sealing plug being configured to taper to match said opening.
11. The second charging connector according to claim 9 or 10, wherein the second control valve comprises: a valve seat, a valve core and an elastic member, the valve seat being disposed in the liquid chamber, the valve A core is disposed within the valve seat, the resilient member is disposed between the valve seat and the spool, and the spool is coupled to the sealing plug.
12. The second charging connector according to claim 11, wherein the valve seat has a peripheral wall, the end of the peripheral wall being configured as a tapered end that tapers to the outside, the spool including a tapered portion And the tapered portion can fit over the tapered end of the valve seat.
13. The second charging connector according to claim 12, wherein the inner peripheral wall of the liquid chamber is further configured as a limiting portion, and the limiting portion is configured to be tapered to be tapered with the valve core Cooperate.
14. The second charging connector according to any one of claims 11 to 13, characterized by further comprising: a sensor disposed on the valve seat and configured to detect an elastic force of the elastic member.
15. A second charging connector according to any one of claims 9 to 14, wherein the liquid chamber is provided with a second return passage at a position close to the opening.
16. The second charging connector according to any one of claims 9 to 14, wherein the liquid chamber further comprises: a liquid inlet passage, the liquid inlet passage being located inside the second return passage and The second return channel is connected.
17. The second charging connector according to claim 16, wherein a piston is disposed in the liquid inlet passage, and the piston is movable in the liquid inlet passage to open and close the liquid inlet passage.
18. The second charging connector according to claim 17, wherein an inner diameter of said liquid inlet passage is increased in a direction away from said second return passage, said piston being tapered, said liquid inlet passage The bottom end is set as the limit end.
19. The second charging connector of claim 18 wherein said piston has a density less than a density of said liquid metal.
20. A vehicle characterized by comprising a first charging connector according to any one of claims 1-8 or a second charging connector according to any one of claims 9-19.

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