CN110014946B

CN110014946B - Charging device, vehicle, and charging system

Info

Publication number: CN110014946B
Application number: CN201710919586.5A
Authority: CN
Inventors: 吴兴国; 李振; 刘伟; 姜宏; 陈斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2021-05-14
Anticipated expiration: 2037-09-30
Also published as: CN110014946A

Abstract

The invention discloses a charging device, a vehicle and a charging system, wherein the charging device comprises: the heat dissipation base, the heat dissipation base includes: the bottom wall is connected to the bottom of the peripheral wall, and the bottom wall is provided with a mounting hole; the first cooling pipeline is fixed on the peripheral wall of the heat dissipation base and is suitable for being communicated with an external cold source; the charging connecting piece is installed in the mounting hole, a cooling flow channel is formed in the charging connecting piece, and the cooling flow channel is communicated with the first cooling pipeline. Wherein, first cooling line has the effect of cooling connecting piece and heat dissipation base of charging, through the combination of first cooling line and heat dissipation base like this, can effectively reduce the temperature of the connecting piece that charges, can effectively avoid charging connecting piece's binding post to appear overheated problem moreover to can guarantee the security of charging of vehicle.

Description

Charging device, vehicle, and charging system

Technical Field

The invention relates to the technical field of vehicle charging, in particular to a radiator of a charging connecting piece, a charging device with the radiator, a vehicle with the charging device and a charging system.

Background

At present, due to the problems of energy, environment and the like, the explosive growth of new energy automobiles is promoted, and the holding amount of the new energy automobiles is continuously increased. Compared with the traditional fuel vehicle, the new energy vehicle has the great advantages of energy conservation and environmental protection, but the electric vehicle has long charging time period and is a long-standing problem.

At present, a method of shortening the charging time by increasing the charging power is commonly used. The problems with this are: because the electric current is too big, the binding post of the socket department that charges heats seriously, leads to appearing charging terminal burnout or the problem trouble of charging, and whole car can't normally charge like this, and the security of charging can't effectively be guaranteed moreover.

Also, although some manufacturers are also actively adopting some ways of reducing the temperature at the terminal, for example, arranging a cooling device at the charging harness, the cooling effect is not ideal and the arrangement is complicated.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides a charging device which can effectively reduce the temperature of a charging connecting piece and avoid the problem of overheating of a wiring terminal.

The invention further provides a vehicle.

The invention further provides a charging system.

The charging device of the charging connecting piece comprises a heat dissipation base, wherein the heat dissipation base comprises: the bottom wall is connected to the bottom of the peripheral wall, and the bottom wall is provided with a mounting hole; the first cooling pipeline is fixed on the peripheral wall of the heat dissipation base and is suitable for being communicated with an external cold source; the charging connecting piece is installed in the mounting hole, a cooling flow channel is formed in the charging connecting piece, and the cooling flow channel is communicated with the first cooling pipeline.

According to the charging device, the first cooling pipeline has the function of cooling the charging connecting piece and the heat dissipation base, so that the temperature of the charging connecting piece can be effectively reduced through the combination of the first cooling pipeline and the heat dissipation base, the problem that a connecting terminal of the charging connecting piece is overheated can be effectively avoided, and the charging safety of a vehicle can be guaranteed.

In some examples of the invention, the first cooling line has a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet being disposed adjacent to each other.

In some examples of the invention, the charging device further comprises: the liquid inlet and the liquid outlet are respectively connected with the two interfaces.

In some examples of the present invention, a liquid inlet pipe and a liquid outlet pipe are connected between the two interfaces of the external joint and the cooling flow passage of the charging connector.

In some examples of the present invention, the number of the charging connectors is two, a common liquid distribution pipe is connected between the liquid inlet pipeline and the cooling channels of the two charging connectors, and a common liquid distribution pipe is connected between the liquid outlet pipeline and the cooling channels of the two charging connectors.

In some examples of the invention, the common liquid distribution tube is U-shaped.

In some examples of the invention, the charging connector comprises: the cooling device comprises a shell and a sealing cover, wherein the sealing cover is fixed at the rear part of the shell, the cooling flow channel is arranged in the shell, and the end part of the common liquid separating pipe extends into the sealing cover to be connected with the cooling flow channel.

In some examples of the present invention, the heat radiation base has a plurality of heat radiation fins formed thereon, the plurality of heat radiation fins being arranged at intervals in a circumferential direction of the peripheral wall.

In some examples of the invention, the first cooling line is a copper tube.

The vehicle according to the present invention includes: the charging device.

The charging system according to the present invention includes: the charging device; the cooling system outside the car, the cooling system outside the car with first cooling pipeline is linked together, the cooling system outside the car is outside cold source.

In some examples of the invention, the outboard cooling system includes: the pump body, the heat exchanger, the liquid storage pot and form circulation circuit between the first cooling pipeline.

In some examples of the invention, the charging system further comprises: the automatic charging device comprises a plugging detection piece and an electric control module, wherein the plugging detection piece is used for detecting the plugging state of a charging gun in the charging connection piece, and the electric control module is electrically connected with the plugging detection piece and controls the pump body to work after receiving a charging gun plugging completion signal.

In some examples of the invention, the charging system further comprises: the cooling system outside the vehicle is provided with a butt joint butted with the first cooling pipeline, and the butt joint is arranged on the charging gun.

Drawings

FIGS. 1 and 2 are schematic views of a heat sink from different angles according to an embodiment of the invention;

fig. 3 is an exploded view of a charging device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a partial structure of a heat sink according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a charging device according to an embodiment of the invention;

FIGS. 6 and 7 are schematic diagrams of a cooling system and a charging device, respectively, according to various embodiments of the present invention;

fig. 8 is a partial structural schematic diagram of a charging device according to an embodiment of the present invention.

Reference numerals:

a charging device 100;

a heat sink 10;

a heat dissipation base 1; a bottom wall 11; a peripheral wall 12; a mounting hole 13; a heat sink 14;

a first cooling circuit 2; a second cooling circuit 3;

a charging connection 20; a liquid inlet line 21; a liquid outlet line 22; a common liquid-separating pipe 23; a housing 24; a cover 25;

a charging harness 30;

a vehicle body skin 40; a heat dissipation bar 41; an outer joint 50;

a cooling system 200; a first pump body 210; a first heat exchanger 220; a first reservoir 230; a first filter 240;

a first plugging detection piece 300; a first electronic control module 400; a first power distribution module 500; a charging pile 600; a charging gun 610; a butt joint 620;

an exterior cooling system 700; a second pump body 710; a second heat exchanger 720; a second liquid storage tank 730; a second filter 740;

a second insertion detection piece 800; a second electronic control module 900.

Detailed Description

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

The charging device 100 according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 3 and 5, the charging device 100 according to an embodiment of the present invention may include: the charging connector 20 and the heat sink 10, wherein a mounting hole 13 is formed in the heat sink 10, and the charging connector 20 is mounted in the mounting hole 13. It is understood that the heat sink 10 may function not only to dissipate heat of the charging connector 20 but also to fixedly mount the charging connector 20. Wherein, the charging connector 20 can be a charging socket or a charging gun 610.

The heat sink 10 of the charging connector 20 is described in detail below, with the heat sink 10 of the charging connector 20 being meant that the heat sink 10 can be used to dissipate heat from the charging connector 20.

The heat sink 10 of the charging connector 20 according to an embodiment of the present invention may include: heat dissipation base 1, heat dissipation base 1 includes: a bottom wall 11 and a peripheral wall 12, wherein the bottom wall 11 is connected with the bottom of the peripheral wall 12, and the bottom wall 11 is provided with a mounting hole 13, and the mounting hole 13 is used for mounting the charging connecting piece 20. That is, the bottom wall 11 may be used to mount and fix the charging connector 20, and the peripheral wall 12 may be fixedly connected to other components, for example, as shown in fig. 3 and 5, the charging device 100 may further include: the top of the peripheral wall 12 may be attached to the vehicle body, for example, the top of the peripheral wall 12 may be fixed to the vehicle body skin 40, so that the peripheral wall 12 may function to mount the heat dissipation base 1 and the charging connector 20, and the heat dissipation base 1 may transfer heat to the vehicle body to dissipate heat through a large area of the vehicle body, thereby further enhancing the heat dissipation effect. It should be noted that the heat dissipation base 1 has a heat dissipation function, and the arrangement of the peripheral wall 12 increases the heat dissipation area of the heat dissipation base 1 at least to some extent.

Wherein, the cross-sectional area of the peripheral wall 12 increases in the direction away from the bottom wall 11, so that the surface area of the peripheral wall 12 can be further increased, and the heat dissipation effect of the heat dissipation base 1 can be improved.

In addition, the heat dissipation base can be a heat conducting material. The heat dissipation effect of the heat dissipation base is good due to the adoption of the heat conduction material, and effective heat dissipation of the charging connecting piece can be facilitated.

As shown in fig. 1, 2 and 4, the peripheral wall 12 may be provided with heat radiating fins 14. The heat dissipation fins 14 can improve the heat dissipation effect of the heat dissipation base 1, and the heat dissipation fins 14 can allow ambient air to flow, so that the heat of the charging connector 20 can be taken away by the air, and the working temperature of the wiring terminal can be further reduced. The connection terminal may include: a positive connecting terminal and a negative connecting terminal for transmitting current. The connecting terminal is suitable for a direct current charging port.

Similarly, the charging terminals of the alternating-current charging interface are also paired and may be multiple, and in principle, the application can still be implemented.

Further, as shown in fig. 1 and 2, the plurality of radiating fins 14 are provided, and the plurality of radiating fins 14 are spaced apart in the circumferential direction of the circumferential wall 12 to constitute a cantilever structure of the circumferential wall 12, so that the structural strength of the circumferential wall 12 can be ensured, and a gap can be formed between adjacent radiating fins 14 to ventilate, and further, the surface area of the circumferential wall 12 in contact with air can be increased, thereby accelerating heat dissipation. For example, the plurality of heat dissipation fins 14 may be disposed at intervals to form the peripheral wall 12 of the heat dissipation base 1, in which case the peripheral wall 12 is equivalent to the cantilever beam of the bottom wall 11, and the plurality of heat dissipation fins 14 thus disposed may make the heat dissipation effect of the heat dissipation base 1 good, and may make the heat dissipation base 1 simple to manufacture and low in cost. As shown in fig. 4, the heat sink 14 may be formed by opening a plurality of heat dissipating elongated holes in the peripheral wall.

Of course, the heat sink 10 may also include other components, such as the first cooling circuit 2, the first cooling circuit 2 is disposed on the heat dissipation base 1, and the first cooling circuit 2 extends on the heat dissipation base 1. That is, the first cooling duct 2 may extend on the bottom wall 11 of the heat radiation base 1, the first cooling duct 2 may extend on the peripheral wall 12 of the heat radiation base 1, and the first cooling duct 2 may extend on the bottom wall 11 and the peripheral wall 12 of the heat radiation base 1. First cooling line 2 has the effect of cooling charging connection spare 20 and heat dissipation base 1, and through first cooling line 2 and heat dissipation base 1's combination, can effectively reduce charging connection spare 20's temperature like this, can effectively avoid charging connection spare 20's binding post to appear overheated problem moreover to can guarantee the security of charging of vehicle.

The first cooling line 2 is wound at least once in the circumferential direction of the circumferential wall 12 and at least once in the bottom wall 11. That is, the first cooling pipe 2 may be wound once in the circumferential direction of the circumferential wall 12, or the first cooling pipe 2 may be wound several times in the circumferential direction of the circumferential wall 12. From this, first cooling pipeline 2 is arranged rationally on perisporium 12, can reduce its influence to heat dissipation base 1, and first cooling pipeline 2 also can contact with perisporium 12 betterly like this to can promote the heat transfer effect. In addition, the length of the first cooling pipeline 2 which is wound by a plurality of circles is proper, so that the contact area between the first cooling pipeline and the peripheral wall 12 can be increased, and the heat exchange effect can be further increased.

According to an alternative embodiment of the present invention, as shown in fig. 1 and 2, the heat sink 10 may further include: and the second cooling pipeline 3, the second cooling pipeline 3 is arranged at the rear side of the bottom wall 11, namely, the second cooling pipeline 3 and the peripheral wall 12 are respectively positioned at two sides of the bottom wall 11, wherein the peripheral wall 12 extends forwards from the bottom wall 11, and the second cooling pipeline 3 can extend backwards from the bottom wall 11.

Further, the second cooling line 3 is adapted to be wound around the charging harness 30 of the charging connector 20, and there are two charging harnesses 30 generating a large amount of heat, and the second cooling lines 30 are wound around the two charging harnesses 30, respectively, and preferably, the second cooling lines 30 wound around the two charging harnesses 30 are communicated, or alternatively, the second cooling lines 30 wound around the two charging harnesses 30 may be one, and the second cooling line 3 is communicated with the first cooling line 2, so that the second cooling line 3 and the first cooling line 2 can share a liquid inlet and a liquid outlet. That is, the second cooling duct 3 may function to cool the electric charging harness 30, so that the temperature of the electric charging harness 30 may be reduced while the temperature of the connection terminal of the charging connector 20 may be reduced by the combination of the first cooling duct 2 and the second cooling duct 3. In addition, since the first cooling pipeline 2 and the second cooling pipeline 3 are communicated, the first cooling pipeline 2 and the second cooling pipeline 3 can share one cooling source, so that the charging device 100 can be simple in structure and reliable in operation.

Specifically, the first cooling line 2 and the second cooling line 3 may be copper pipes. The copper pipe has a simple structure, and is easy to exchange heat with the outside, so that the temperature of the charging connecting piece 20 can be better reduced. The first cooling line 2 and the second cooling line 3 may be both circular pipes, or the first cooling line 2 and the second cooling line 3 may be flat pipes, which may facilitate the second cooling line 3 to wind the charging harness 30.

Alternatively, the first cooling circuit 2 and the second cooling circuit 3 may be an integral tube. This can reduce the degree of difficulty of arranging first cooling pipeline 2 and second cooling pipeline 3, can reduce the cost of first cooling pipeline 2 and second cooling pipeline 3 moreover.

According to an alternative embodiment of the invention, as shown in fig. 4, the first cooling line 2 has an inlet and an outlet, which are arranged adjacent to each other. From this, can make first cooling pipeline 2 feed liquor convenient with go out the liquid like this, can be convenient for arranging of cooling source moreover, can be favorable to the circulation of the coolant liquid between first cooling pipeline 2 and the cooling source to can reduce first cooling pipeline 2 arrange the degree of difficulty.

Further, as shown in fig. 4, the method further includes: the external joint 50 is provided with two interfaces in the external joint 50, and the two interfaces are connected with the liquid inlet and the liquid outlet respectively. The interface can make things convenient for the inlet and the outlet of first cooling pipeline 2 and dock with butt joint 620 to can one butt joint 620 can accomplish the butt joint with an outer joint 50, can make the inlet liquid of first cooling pipeline 2 and go out the liquid mode simple and reliable like this.

As shown in fig. 3 and 5, the charging device 100 may further include: the peripheral wall 12 of the heat dissipation base 1 is fixed on the vehicle body skin 40, and the outer joint 50 is fixed on the vehicle body skin 40. The external joint 50 thus arranged is reliable in fixing mode and can be in butt joint with an external cooling joint, so that liquid inlet and liquid outlet of the first cooling pipeline 2 can be simple and convenient.

Alternatively, as shown in fig. 3 and 5, the body skin 40 is provided with a heat dissipation strip 41. The heat dissipation strip 41 on the body skin 40 can also perform a heat dissipation function, so that the temperature of the charging connector 20 can be further reduced, and the problem of overheating of the connecting terminal can be avoided.

In addition, a cooling flow passage may be further provided in the vehicle body skin 40, and the cooling flow passage communicates with the first cooling line 2.

Specifically, a cooling flow passage is formed in the charging connector 20, for example, a cooling line is formed in the charging connector 20, the cooling line forming a cooling flow passage through which a cooling liquid flows, the cooling flow passage communicating with the first cooling line 2. As shown in fig. 8, a liquid inlet pipe 21 and a liquid outlet pipe 22 are connected between the two connectors of the external connector 50 and the cooling flow passage of the charging connector 20. That is to say, the inside of the charging connector 20 may further be provided with a cooling flow channel, and the heat of the connection terminal can be directly and more effectively taken away by the cooling flow channel, so that the charging safety of the vehicle can be ensured.

As shown in fig. 8, there are two charging connectors 20, a common liquid distribution pipe 23 is connected between the liquid inlet pipe 21 and the cooling channels of the two charging connectors 20, and a common liquid distribution pipe 23 is connected between the liquid outlet pipe 22 and the cooling channels of the two charging connectors 20. The common liquid distributing pipe 23 can solve the technical problems of the communication between the cooling flow channels in the two charging connectors 20 and the liquid inlet pipe 21 and the communication between the cooling flow channels and the liquid outlet pipe 22, so that the overall structure of the charging device 100 is simple and reliable.

Specifically, the common liquid-distributing pipe 23 has a U-shape. The U-shaped common liquid distribution pipe 23 may facilitate its simultaneous supply of cooling liquid to the cooling channels in both charging connections 20.

Also, the charging connector 20 may further include: a housing 24 and a cover 25, the cover 25 is fixed at the rear of the housing 24, the cooling flow passage is provided in the housing 24, and the end of the common liquid distribution pipe 23 is inserted into the cover 25 to be connected with the cooling flow passage. The sealing cover 25 can fix the common liquid distributing pipe 23, and can ensure the communication sealing performance between the common liquid distributing pipe 23 and the liquid inlet pipeline 21 and the communication sealing performance between the common liquid distributing pipe 23 and the liquid outlet pipeline 22.

As shown in fig. 3 and 5, the number of the charging connectors 20 may be two, and a user may select one of the charging connectors 20 to use as needed. The two charging connectors 20 share one liquid inlet line and one liquid outlet line. From this, inlet pipe way and drain pipe set up simply, can satisfy two charging connection spare 20's demand moreover simultaneously.

The vehicle according to the embodiment of the present invention includes the charging device 100 of the above-described embodiment. Wherein, the vehicle can also include: the cooling system 200, the first cooling pipeline 2 and the cooling system 200 are communicated. That is to say, the cooling system 200 may constitute a cooling source of the first cooling pipeline 2, and the cooling system 200 may form a circulation loop with the first cooling pipeline 2, so as to ensure that the first cooling pipeline 2 has a continuously flowing cooling liquid, and thus, the working temperature of the charging connector 20 may be effectively reduced.

Alternatively, as shown in fig. 6, the cooling system 200 may include: the first pump body 210, the first heat exchanger 220 and the first reservoir 230 form a circulation loop between the first pump body 210, the first heat exchanger 220, the first reservoir 230 and the first cooling pipe 2. The first cooling line 2 thus arranged can participate in the circulation of the cooling system 200, so that the operating temperature of the charging connector 20 can be effectively reduced. The cooling system 200 further includes: a first filter 240, the first filter 240 being disposed between the first pump body 210 and the first heat exchanger 220, the first filter 240 being capable of performing a filtering function.

Optionally, as shown in fig. 6, the vehicle may further include: the first plug-in detection piece 300 is used for detecting the plug-in state of the charging gun 610 inserted into the charging connector 20, the first electronic control module 400 is electrically connected with the first plug-in detection piece 300, and the first electronic control module 400 controls the first pump body 210 to work after receiving a plug-in completion signal of the charging gun 610. Specifically, the vehicle may further include: a first power distribution module 500, the first power distribution module 500 being disposed between the first plugging detector 300 and the first electronic control module 400. Therefore, the charging socket can achieve the purpose of reasonable control, and the cooling medium can be ensured to flow in the first cooling pipeline 2 during charging.

It should be noted that the internal cooling source may be directly connected to the second cooling pipeline 3, and then the cooling liquid flows to the first cooling pipeline 2, or the internal cooling source may be connected to the first cooling pipeline 2 through a flow passage in the body skin 40, and then flows to the second cooling pipeline 3.

A charging system is described below with reference to fig. 7.

A charging system according to an embodiment of the present invention includes: the charging device 100 and the external cooling source according to the above embodiment may be the external cooling system 700, and the external cooling system 700 is communicated with the first cooling pipeline 2. Wherein the charging device 100 may be the charging device 100 shown in fig. 3, so that the external cooling system 700 may be connected to two interfaces of the external connector 50 to realize the circulation of the inlet liquid and the outlet liquid. The provision of the external cooling system 700 eliminates the need to provide the cooling system 200 in the vehicle, and thus the cost of the vehicle can be reduced, and the external cooling system 700 can be applied to a plurality of vehicles, and thus the versatility is good.

Alternatively, as shown in fig. 7, the outboard cooling system 700 may include: the second pump body 710, the second heat exchanger 720 and the second liquid storage tank 730 are connected in series, and the second pump body 710, the second heat exchanger 720, the second liquid storage tank 730 and the first cooling pipeline 2 are connected in series. The first cooling line 2 thus provided can participate in the circulation of the cooling system 700 external to the vehicle, so that the operating temperature of the charging connector 20 can be effectively reduced. The extra-vehicular cooling system 700 further includes: and a second filter 740, the second filter 740 being disposed between the second pump body 710 and the second heat exchanger 720, the second filter 740 being capable of performing a filtering function.

Alternatively, as shown in fig. 7, the vehicle may further include: the second plug-in detection piece 800 and the second electronic control module 900, the second plug-in detection piece 800 is used for detecting the plug-in state of the charging gun 610 inserted into the charging connector 20, the second electronic control module 900 is electrically connected with the second plug-in detection piece 800, and the second electronic control module 900 controls the second pump body 710 to work after receiving a plug-in completion signal of the charging gun 610. Specifically, the vehicle may further include: and a second power distribution module disposed between the second plugging detector 800 and the second electronic control module 900. Therefore, the charging socket can achieve the purpose of reasonable control, and the cooling medium can be ensured to flow in the first cooling pipeline 2 during charging.

As shown in fig. 7, the charging system may further include: fill electric pile 600, fill electric pile 600 including the rifle 610 that charges, the cooling system 700 is provided with the butt joint 620 with the external joint 50 butt joint of first cooling pipe 2 outside the car, and butt joint 620 sets up on the rifle 610 that charges. When rifle 610 and the socket butt joint of charging like this, butt joint 620 and external joint 50 can accomplish the butt joint in step to can make charging system easy operation and convenience, the safety in utilization is high.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A charging device, comprising:

the heat dissipation base, the heat dissipation base includes: the bottom wall is connected to the bottom of the peripheral wall, and the bottom wall is provided with a mounting hole;

the first cooling pipeline is fixed on the peripheral wall of the heat dissipation base and is suitable for being communicated with an external cold source;

the charging connecting piece is arranged in the mounting hole, a cooling flow channel is formed in the charging connecting piece, and the cooling flow channel is communicated with the first cooling pipeline;

a second cooling duct provided on a rear side of the bottom wall, the second cooling duct being wound around a charging harness of the charging connector, the second cooling duct being configured in a spiral shape;

the radiating base is provided with a plurality of radiating fins which are arranged at intervals in the circumferential direction of the circumferential wall.

2. A charging arrangement as claimed in claim 1, in which the first cooling circuit has an inlet port and an outlet port, the inlet and outlet ports being disposed adjacent one another.

3. The charging device according to claim 2, further comprising: the liquid inlet and the liquid outlet are respectively connected with the two interfaces.

4. The charging device of claim 3, wherein a liquid inlet pipeline and a liquid outlet pipeline are connected between the two interfaces of the external joint and the cooling flow channel of the charging connector.

5. The charging device as claimed in claim 4, wherein the number of the charging connectors is two, a common liquid distributing pipe is connected between the liquid inlet pipeline and the cooling channels of the two charging connectors, and a common liquid distributing pipe is connected between the liquid outlet pipeline and the cooling channels of the two charging connectors.

6. A charging arrangement as claimed in claim 5, in which the common manifold is U-shaped.

7. A charging arrangement as claimed in claim 5, in which the charging connection comprises: the cooling device comprises a shell and a sealing cover, wherein the sealing cover is fixed at the rear part of the shell, the cooling flow channel is arranged in the shell, and the end part of the common liquid separating pipe extends into the sealing cover to be connected with the cooling flow channel.

8. A charging arrangement as claimed in claim 1, in which the first cooling conduit is a copper tube.

9. A vehicle, characterized by comprising: the charging device according to any one of claims 1 to 8.

10. An electrical charging system, comprising:

a charging device according to any one of claims 1-8;

the cooling system outside the car, the cooling system outside the car with first cooling pipeline is linked together, the cooling system outside the car is outside cold source.

11. The charging system of claim 10, wherein the off-board cooling system comprises: the pump body, the heat exchanger, the liquid storage pot and form circulation circuit between the first cooling pipeline.

12. The charging system of claim 11, further comprising: the automatic charging device comprises a plugging detection piece and an electric control module, wherein the plugging detection piece is used for detecting the plugging state of a charging gun in the charging connection piece, and the electric control module is electrically connected with the plugging detection piece and controls the pump body to work after receiving a charging gun plugging completion signal.

13. The charging system of claim 10, further comprising: the cooling system outside the vehicle is provided with a butt joint butted with the first cooling pipeline, and the butt joint is arranged on the charging gun.