WO2019062979A1

WO2019062979A1 - First and second charging connectors, charging gun, vehicle and charging system

Info

Publication number: WO2019062979A1
Application number: PCT/CN2018/108823
Authority: WO
Inventors: 吴兴国; 王洪军; 王琛; 阮斌斌; 石峰
Original assignee: 比亚迪股份有限公司
Priority date: 2017-09-30
Filing date: 2018-09-29
Publication date: 2019-04-04
Also published as: TWI687022B; TW201916525A; CN110014955B; CN110014955A

Abstract

Provided is a charging connection device, comprising a first charging connector (100) and a second charging connector (200). The first charging connector (100) comprises a first housing (10) and a first cooling pipeline (20). The first cooling pipeline (20) is fixed in the first housing (10). The first cooling pipeline (20) comprises an accommodation chamber (21), wherein the accommodation chamber (21) can accommodate a cooling medium (30), an end of the accommodation chamber (21) is open and is provided with a protruding post (22), an end of the accommodation chamber (21) is provided with a liquid leakage hole (23), and the liquid leakage hole (23) is arranged around the protruding post (22). The second charging connector (200) comprises a second housing (210) and a second cooling pipeline (220). The second cooling pipeline (220) is arranged in the second housing (210). The second cooling pipeline (220) comprises a liquid chamber (221), a second control valve (230) and a sealing plug (240), wherein the liquid chamber (221) can be filled with the cooling medium (30), the liquid chamber (221) has an opening, the second control valve (230) is arranged in the liquid chamber (221), the second control valve (230) is connected to the sealing plug (240), and the second control valve (230) controls the sealing plug (240) so as to selectively seal the opening. Further provided is a vehicle (1000) having the above-mentioned charging connection device. The above-mentioned charging connection device can reduce the temperature at a wiring terminal during charging, and can prevent the cooling medium (30) from leaking, improving the safety of the vehicle (1000) during charging.

Description

First and second charging connectors and charging guns, vehicles and charging systems

Cross-reference to related applications

This application claims the Chinese patent application number "201710944267.X" submitted by BYD Co., Ltd. on September 30, 2017, entitled "First and Second Charging Connectors and Charging Guns, Vehicles and Charging Systems". priority.

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.

Also, although some manufacturers are currently actively adopting some means of lowering the temperature at the terminal, for example, arranging a cooling device at the charging harness, the cooling effect is not satisfactory and the arrangement is complicated.

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 also proposes a second charging connector.

The present application also proposes a vehicle.

The first charging connector according to the present application includes: a first housing; a first cooling duct, the first cooling duct is fixed in the first housing, and the first cooling duct includes: a receiving chamber The receiving chamber can accommodate a cooling medium, one end of the receiving chamber is open and is provided with a protruding column, and one end of the receiving chamber is provided with a liquid leakage hole, and the liquid leakage hole surrounds the protruding column Settings.

Thereby, by providing the accommodating chamber, the first cooling pipe is accommodated with a cooling medium, the cooling medium is adapted to lower the operating temperature of the first terminal, and the protruding column can be connected when the first cooling pipe and the second cooling pipe are connected Opening a sealing plug in the second cooling pipe to form a passage between the first cooling pipe and the second cooling pipe, so that the docking between the first cooling pipe and the second cooling pipe is more reliable. Reduce the risk of leakage of the cooling medium and improve the safety of the vehicle when charging.

The second charging connector according to the present application includes: a second housing; a second cooling duct, the second cooling duct is disposed in the second housing, and the second cooling duct includes: a liquid chamber a second control valve and a sealing plug, the liquid chamber may be filled with a cooling medium, the liquid chamber has an opening, the second control valve is disposed in the liquid chamber and connected to the sealing plug, the second A control valve controls the sealing plug to selectively seal the opening. A vehicle according to the present application includes the first charging connector or the second charging connector.

DRAWINGS

1 is a schematic view of docking a first charging connector and a second cooling pipe 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 cooling line and a second cooling line docked in accordance with an embodiment of the present application;

Figure 8 is a cross-sectional view of the first cooling line and the second cooling line not docked in accordance with 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;

11 is a schematic structural view of a vehicle according to an embodiment of the present application;

FIG. 12 is a schematic structural view of a vehicle according to another embodiment of the present application.

Reference mark:

The first charging connector 100;

First housing 10;

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

Cooling medium 30;

Pump 40; storage container 50; first sealing ring 80; filter 90; power distribution module 110; first terminal 120;

a second charging connector 200;

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

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

Sealing plug 240; tapered opening 250; sensor 260; second sealing ring 270; second return channel 280; piston 290;

Charging pile 300;

Cooling system 400; heat exchanger 420;

Vehicle 1000.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

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 FIGS. 1 and 12, the charging system according to an embodiment of the present application may include a first charging connector 100, a second charging connector 200, and a pump 40, a first charging connector 100 and a second charging connector 200. Docking, 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 powered The battery is connected by a charging harness so that the charging gun 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 FIGS. 1, 7, and 8, the first charging connector 100 includes a first cooling line 20, the second charging connector 200 includes a second cooling line 220, and the second cooling line 220 is provided with a sealing plug. 240. When the first charging connector 100 and the second charging connector 200 are docked, the sealing plug 240 is opened, and the first cooling conduit 20 and the second cooling conduit 220 are electrically connected. Thus, the cooling medium can flow in the first cooling line 20 and the second cooling line 220, so that the operating temperatures of the first charging connector 100 and the second charging connector 200 can be lowered. The cooling medium can be a liquid, such as water; the cooling medium can also be a gas, such as a cryogenic gas.

When the first cooling line 20 and the second cooling line 220 are docked, the pump 40 operates to cause the cooling medium to enter the first cooling line 20 and the second cooling line 220. It can be understood that the pump 40 can power the flow of the cooling medium in the first cooling line 20 and the second cooling line 220, so that the cooling medium can be enabled in the first cooling line 20 and the second cooling line. The effective circulating flow in 220 can further reduce the operating temperatures of the first charging connector 10 and the second charging connector 20.

Additionally, as shown in FIG. 10, the charging system includes a storage container 50 coupled to a pump 40 for storing a cooling medium. Thus, the pump 40 can pump the cooling medium from the storage container 50 into the first cooling line 20 and the second cooling line 220, and can also cool the cooling medium in the first cooling line 20 and the second cooling line 220. Pumping into the storage container 50, the storage container 50 can effectively provide the first cooling line 20 and the second cooling line 220 with a cooling medium that participates in the cycle.

The first charging connector 100 further includes: a first housing 10 and a first terminal 120. The first cooling circuit 20 is fixed in the first housing 10, so that the first housing 10 can protect and The first cooling circuit 20 is fixed, wherein the first cooling circuit 20 is plural, and the first terminal 120 is plural, and the plurality of first terminals 120 are disposed in pairs, for example, the first terminal 120 There may be two, wherein the first cooling circuit 20 may also be two, and the two first cooling pipes 20 are disposed on both sides of the first terminal 120. Wherein, the first connection terminal 120 may include a positive terminal and a negative terminal that transmit current. This first terminal 120 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 cooling line 20 includes a receiving chamber 21 , and the cooling chamber 30 can be accommodated in the receiving chamber 21 , whereby the first cooling line 20 can reduce the first wiring. The temperature of the terminal 120 can continuously remove the heat generated by the first terminal 120, so that the burning problem of the first terminal 120 can be effectively solved, thereby improving the use and safety of the vehicle.

One end of the accommodating chamber 21 is open, and one end of the accommodating chamber 21 is provided with a protruding column 22, and the second charging connector 200 can also accommodate the cooling medium 30. The second charging connector 200 is provided with an openable and sealing sealing plug 240. The raised post 22 is adapted to push open the sealing plug 240 of the sealed cooling medium 30 within the second charging connector 200. It can be understood that after the protruding post 22 pushes the sealing plug 240 away, the cooling medium 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 cooling medium 30 can make the first charging connector 100 and the second charging connector 200 reliable in charging, and can effectively reduce the operating temperature of the first terminal 120, and the cooling medium 30 is also safe to use.

Thus, by providing the accommodating chamber 21, the first cooling duct 20 can be accommodated with the cooling medium 30, the operating temperature of the first terminal 120 can be effectively reduced, and the first cooling duct can be made by providing the boss 22 The 20 can be effectively docked with the second cooling line 220 and filled with the cooling medium 30, so that the charging safety of the vehicle can be improved.

Thus, by providing the accommodating chamber 21, the first cooling duct 20 houses the cooling medium 30, and the cooling medium 30 is adapted to lower the operating temperature of the first terminal 120, and the boss 22 can be in the first cooling duct 20 When the second cooling pipe 220 is docked, the sealing plug 240 in the second cooling pipe 220 is opened to form a passage between the first cooling pipe 20 and the second cooling pipe 220, so that the first cooling pipe 20 is formed. The docking with the second cooling line 220 is more reliable, reducing the risk of leakage of the cooling medium and improving the safety of the vehicle when charging. In addition, the cooling medium 30 in the first charging connector 100 and the second charging connector 200 can be removed when not being charged, so that the operations of the first charging connector 100 and the second charging connector 200 can be facilitated, thereby Can improve the user's 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 leakage hole 23 may be disposed between the first coolant line 20 and the second coolant line 220 such that the first coolant line 20 and the second coolant line 220 are kept open, and the cooling medium 30 may be Flows from the first cooling line 20 to the second cooling line 220 through the leak holes 23.

According to an embodiment of the present application, as shown in FIGS. 7 and 8, the first charging connector 100 may further include: a first return passage 24, the first return passage 24 is disposed at one end of the accommodating chamber 21, and first The return passage 24 is located below the leak hole 23. Thus, when the charging is completed and the cooling medium 30 is pumped away, part of the cooling medium 30 may remain in the first cooling line 20, and the first return passage 24 may cause the cooling medium 30 to flow back into the accommodating chamber 21, thereby avoiding The leakage of the cooling medium 30 ensures the safety of use of the cooling medium 30.

As shown in FIGS. 7 and 8, the first return passage 24 is configured in an arc shape. The recirculation passage thus provided can facilitate the recirculation of the cooling medium 30 under the action of gravity, so that the leakage of the first cooling duct 20 can be effectively prevented.

According to an optional embodiment of the present application, as shown in FIGS. 5-10, the first charging connector 100 may further include a cooling system 400, and the cooling system 400 may include: a pump 40 and a storage container 50, and a receiving chamber 21 The storage container 50 is electrically connected, and the pump 40 is disposed between the accommodation chamber 21 and the storage container 50. The pump 40 can be a two-way pump 40, that is, when the first cooling line 20 is in operation, the pump 40 can pump the cooling medium 30 from the storage container 50 to the accommodating chamber 21, and after the charging is completed, the pump 40 can be taken from the accommodating chamber. The cooling medium 30 is pumped to the storage container 50. In addition, the cooling system 400 may further include: a filter 90 and a heat exchanger 420 disposed downstream of the storage container 50, and the first cooling line 20 is disposed at a downstream end of the heat exchanger 420, and is replaced After the cooling medium 30 cooled by the heat exchanger 420 enters the first cooling line 20, the first charging connector 100 and the second charging connector 200 can be cooled. The storage container 50, the heat exchanger 420, the filter 90, and the pump body 40 are connected in series in series, and the filter 90 can 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 40 .

According to an embodiment of the present application, as shown in FIG. 10, the first charging connector 100 further includes a first control valve (not shown) disposed at an outlet of the storage container 50. The first control valve can effectively cut off the pump 40 and the accommodating chamber 21, so that the cooling medium 30 can be prevented from flowing freely between the pump 40 and the accommodating chamber 21, so that the safety of the cooling medium 30 can be effectively ensured, thereby avoiding the occurrence of the cooling medium. 30 leaks.

As shown in FIG. 5 and FIG. 6, one end of the accommodating chamber 21 is provided with a sealing groove in which a first sealing ring 80 is disposed, and the first sealing ring 80 is disposed around the boss column 22 and the liquid leakage hole 23. When the first charging connector 100 is docked with the second charging connector 200, the first sealing ring 80 can effectively abut the second cooling pipe 220, so that the first cooling pipe 20 and the second cooling pipe can be ensured. An effective seal between 220, which in turn can effectively prevent leakage of the cooling medium 30. It should be noted that the second sealing ring 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 sealing ring can be better ensured. Sealing reliability between the cooling line 20 and the second cooling line 220.

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

As shown in FIG. 2, FIG. 3 and FIG. 4, the second charging connector 200 may include a second housing 210 and a second cooling conduit 220, and the second cooling conduit 220 is disposed in the second housing 210. The second cooling circuit 220 includes a liquid chamber 221, a second control valve 230 and a sealing plug 240. The liquid chamber 221 can be filled with a cooling medium 30, the liquid chamber 221 has an opening, and the second control valve 230 is disposed in the liquid chamber 221. Further, the second control valve 230 is coupled to the sealing plug 240, and the second control valve 230 controls the sealing plug 240 to selectively seal the opening.

Thus, when the first cooling line 20 and the second cooling line 220 are butted, the raised column 22 in the first cooling line 20 can push the sealing plug 240 inwardly, so that the receiving chamber 21 and the liquid chamber can be made The communication between the two ends 221 is such that the cooling medium 30 can flow into the other side regardless of which one has the cooling medium 30, so that the operating temperature when the first charging connector 100 and the second charging connector 200 are charged can be effectively reduced. 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 cooling medium 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.

According to an embodiment of the present application, as shown in FIGS. 7 and 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 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 Figures 7 and 8, the valve seat 231 has a peripheral wall, the end of which is configured as a tapered end, the valve body 232 includes a tapered portion, and the tapered portion can be fitted over the tapered end. 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, the tapered portion of the valve body 232 can stop against the inner peripheral wall of the liquid chamber 221, that is, the limiting portion, so that the inner peripheral wall of the liquid chamber 221 is also It can function to limit the movement of the spool 232, so that the operational reliability of the second control valve 230 can be ensured, and the sealing reliability of the sealing plug 240 can be ensured.

According to an embodiment of the present application, 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 elasticity of the elastic member 234. force. It can be understood that the sensor 260 can effectively detect the change of the elastic force of the elastic member 234, so that the position of the sealing plug 240 can be judged. When the sealing plug 240 moves to the predetermined position, the sensor 260 can send a signal to cause the pump 40 to start working. Then, the cooling medium 30 is pumped into the first cooling line 20 and the second cooling line 220.

Further, 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 cooling medium 30 to flow back into the liquid chamber 221, so that leakage of the cooling medium 30 can be effectively prevented.

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

Also, after the vehicle is charged, the gas pipe can be opened at the charging pile 300, so that the entire circuit is connected to the outside air. At this time, the pump 40 starts to work, and the cooling medium 30 in the entire circuit is taken out. After the valve body is closed, the valve body is closed. .

In addition, as shown in FIGS. 8 and 9, the liquid chamber 221 may further include an inlet passage 291, the inlet passage 291 is located inside the second return passage 280, and the inlet passage 291 is in communication with the second return passage 280. It can be understood that the liquid inlet passage 291 can further flow inward after the cooling medium flows into the liquid chamber 221, and the cooling medium located in the second return passage 280 can also flow inward through the liquid inlet passage 291.

According to an embodiment of the present application, 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. 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. 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 cooling medium 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.

Therein, the density of the piston 290 is less than the density of the cooling medium. Thus, the cooling medium 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 FIG. 10, in the charging system, when the first charging connector 100 and the second charging connector 200 are docked, the two first cooling pipes 20 and the two second cooling pipes 220 are butted, and two The other cooling components of the whole vehicle may be connected between the second cooling pipes 220, so that the cooling system 400, the two first cooling pipes 20, the two second cooling pipes 220, and other cooling components of the whole vehicle may be formed. A circulation loop can make the charging system simple in structure, and can effectively reduce the operating temperatures of the first charging connector 100 and the second charging connector 200.

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. Further, those skilled in the art can combine and combine the various embodiments or examples described in the specification and the features of the different embodiments or examples 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

A first charging connector, comprising:

First housing

a first cooling duct, the first cooling duct is fixed in the first casing, the first cooling duct comprises: a receiving chamber, the receiving chamber can accommodate a cooling medium, and one end of the receiving chamber Opened and provided with a raised column, the one end of the receiving chamber is provided with a liquid leakage hole, and the liquid leakage hole is disposed around the protruding column.
The first charging connector according to claim 1, 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.
The first charging connector of claim 2 wherein said first return passage is configured in an arc shape.
The first charging connector according to any one of claims 1 to 3, characterized in that the accommodating chamber is electrically connected to a storage container, and a pump is disposed between the storage container and the accommodating chamber.
The first charging connector according to claim 4, further comprising: a heat exchanger, a heat exchanger connected to the outlet of the storage container, the heat exchanger being further connected to the receiving chamber.
The first charging connector of claim 5, further comprising: a first control valve, the first control valve being disposed at an outlet of the storage container.
The first charging connector according to any one of claims 1 to 6, wherein the one end of the receiving chamber is provided with a sealing groove, and the sealing groove is provided with a first sealing ring, the first A seal ring surrounds the leak hole.
A second charging connector, comprising:

Second housing

a second cooling duct, the second cooling duct is disposed in the second casing, the second cooling duct comprises: a liquid chamber, a second control valve and a sealing plug, wherein the liquid chamber can be filled with a cooling medium The liquid chamber has an opening, the second control valve is disposed in the liquid chamber and is coupled to the sealing plug, and the second control valve controls the sealing plug to selectively seal the opening.
The second charging connector of claim 8 wherein the opening is configured as a tapered opening that tapers to the outside, the sealing plug being configured to taper to match the opening.
The second charging connector according to claim 8 or 9, 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.
The second charging connector according to claim 10, wherein the valve seat has a peripheral wall, the end of the peripheral wall is configured as a tapered end, the spool includes a tapered portion and the tapered portion A portion can be fitted over the tapered end.
The second charging connector according to claim 11, 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 engage the tapered portion.
The second charging connector according to any one of claims 10 to 12, further comprising: a sensor disposed on the valve seat and configured to detect an elastic force of the elastic member.
A second charging connector according to any one of claims 8 to 13, wherein the liquid chamber is provided with a second return passage at a position close to the opening.
The second charging connector according to any one of claims 8 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.
The second charging connector according to claim 15, 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.
The second charging connector according to claim 16, wherein an inner diameter of the liquid inlet passage is increased in a direction away from the second return passage, the piston is tapered, and the inlet passage is The bottom end is set as the limit end.
The second charging connector of claim 17 wherein said piston has a density less than a density of said cooling medium.
A vehicle characterized by comprising a first charging connector according to any one of claims 1-7 or a second charging connector according to any one of claims 8-18.