Cooling device, cooling system and charging device

Abstract

The invention discloses a cooling device, a cooling system and a charging device. The cooling device comprises a plurality of cooling modules, and each cooling module is provided with a cooling liquid containing cavity, a first pipe connector and a second pipe connector, the multi-way pipe connector comprises a plurality of first pairs of matched pipe connectors and liquid inlet pipe connectors communicated with the first pairs of matched pipe connectors. The liquid inlet pipe connector is used for being connected with a cooling liquid inlet pipe, the multiple first pairing pipe connectors are connected with the first pipe connectors of the multiple cooling modules correspondingly, and cooling liquid flows into the cooling liquid containing cavities of the multiple cooling modules at the same time in a parallel connection mode through the multi-way pipe connector. The second pipe joints of the multiple cooling modules are used for being connected with the cooling core pipes of the multiple charging cables correspondingly, so that cooling liquid can flow through the cooling core pipes of the multiple charging cables at the same time in a parallel connection mode. According to the invention, it can be ensured that the plurality of charging terminals are fully cooled and the temperatures are kept consistent, and it can also be ensured that the plurality of charging cables are fully cooled and the temperatures are kept consistent.

Description

Technical Field

[0001] The present invention relates to a cooling device, including a cooling system of the cooling device and a charging device including the cooling system. Background Art

[0002] In the prior art, a charging base generally includes a charging base housing, charging terminals disposed in the charging base housing, and a charging cable electrically connected to the charging terminals. In order to increase the charging speed, it is necessary to increase the charging current. Currently, the charging current requirement is as high as 600 A, and it may increase to 1000 A in the future. When such a large current flows through the charging cable and the charging terminals, the temperature inside the charging base housing and the temperature of the charging cable will rise sharply. In order to prevent the temperature from rising too much, in the prior art, the diameter of the charging cable is usually increased, but this will increase the volume and weight of the charging base product and result in a higher cost.

[0003] In order to prevent the temperature of the charging cable and the charging terminals from rising sharply, recently, a liquid cooling solution has been proposed. The liquid cooling solution generally includes a plurality of cooling modules, each cooling module having a coolant accommodation cavity for accommodating a coolant, and cooling core tubes of a plurality of charging cables are respectively connected to the coolant accommodation cavities of the plurality of cooling modules. In the prior art, the coolant accommodation cavities of the plurality of cooling modules are connected in series, and the coolant flows through the plurality of cooling modules and the cooling core tubes of the plurality of charging cables in sequence, which will cause the temperatures of the plurality of charged terminals to be inconsistent and the temperatures of the plurality of charged cables to be inconsistent, reducing the cooling effect. In particular, the temperature of the charging cable through which the coolant flows last cannot be effectively reduced. Summary of the Invention

[0004] The object of the present invention aims to solve at least one of the above problems and defects existing in the prior art.

[0005] According to one aspect of the present invention, a cooling device is provided. The cooling device includes: a plurality of cooling modules, each cooling module having a coolant accommodation cavity for accommodating a coolant, a first pipe joint and a second pipe joint communicating with the coolant accommodation cavity; and a multi-way pipe joint member including a plurality of first mating pipe joints and a liquid inlet pipe joint communicating with all the plurality of first mating pipe joints. The liquid inlet pipe joint is used to be connected to a coolant inlet pipe, and the plurality of first mating pipe joints are respectively connected to the first pipe joints of the plurality of cooling modules, so that the coolant can simultaneously flow into the coolant accommodation cavities of the plurality of cooling modules in a parallel manner through the multi-way pipe joint member. The second pipe joints of the plurality of cooling modules are used to be respectively connected to the cooling core tubes of a plurality of charging cables, so that the coolant in the plurality of cooling modules can simultaneously flow through the cooling core tubes of the plurality of charging cables in a parallel manner.

[0006] According to an exemplary embodiment of the present invention, the cooling module includes a cooling box, the inner cavity of the cooling box constitutes the coolant accommodation cavity, and the cooling box includes a box body having an opening and a cover plate mounted on the opening of the box body; the cover plate is used for thermally contacting the welding end of the charging terminal to transfer the heat on the charging terminal into the coolant in the cooling box.

[0007] According to another exemplary embodiment of the present invention, the first pipe joint and the second pipe joint are integrally formed with the box body, such that the first pipe joint and the second pipe joint become a part of the box body.

[0008] According to another exemplary embodiment of the present invention, the cover plate is a heat-conducting but non-conductive insulating member, and the box body is a non-heat-conducting and non-conductive insulating member.

[0009] According to another exemplary embodiment of the present invention, the cover plate is a heat-conducting but non-conductive ceramic member, and the box body is a non-heat-conducting and non-conductive integrally injection-molded member.

[0010] According to another exemplary embodiment of the present invention, threaded holes are respectively formed in the box body and the cover plate, and the cooling module further includes threaded connectors that are connected into the threaded holes in the box body and the cover plate to fix the cover plate to the box body.

[0011] According to another exemplary embodiment of the present invention, the cooling module further includes: a sealing ring, disposed around the opening of the box body and squeezed between the box body and the cover plate, for achieving the seal between the box body and the cover plate.

[0012] According to another exemplary embodiment of the present invention, a sealing ring mounting groove is formed in at least one of the box body and the cover plate, and the sealing ring is positioned and mounted in the sealing ring mounting groove.

[0013] According to another exemplary embodiment of the present invention, the cooling module further includes: a fixing device, mounted on the box body of the cooling box, for fixing the welding end of the charging terminal to the outer side of the cover plate of the cooling box, such that the welding end of the charging terminal is in reliable thermal contact with the cover plate.

[0014] According to another exemplary embodiment of the present invention, the fixing device includes a U-shaped member and a bolt. The U-shaped member is fixed to the box body, and a through threaded connection hole is formed in the U-shaped member. The bolt is connected into the threaded connection hole and pushes the welding end of the charging terminal against the cover plate of the cooling box, such that a predetermined contact force exists between the welding end of the charging terminal and the cover plate of the cooling box.

[0015] According to another exemplary embodiment of the present invention, the U-shaped member includes: a pair of side plates respectively fixed to two sides of the box body; and a top plate connected between tops of the pair of side plates. The top plate of the U-shaped member faces the conductor end of a charging cable welded to the welding end of the charging terminal. The threaded connection hole is formed in the top plate of the U-shaped member, and the bolt abuts against the conductor end of the charging cable to push the welding end of the charging terminal against the cover plate of the cooling box through the conductor end of the charging cable.

[0016] According to another exemplary embodiment of the present invention, clamping grooves are respectively formed on the pair of side plates of the U-shaped member, and protrusions are respectively formed on two sides of the box body of the cooling box. The protrusions are engaged with the clamping grooves to respectively fix the pair of side plates of the U-shaped member to two sides of the box body of the cooling box.

[0017] According to another aspect of the present invention, a cooling system is provided. The cooling system includes: the aforementioned cooling device; and a plurality of charging cables, each charging cable including a cooling core tube and a conductor. Ends of the cooling core tubes of the plurality of charging cables are respectively connected to second pipe joints of a plurality of cooling modules of the cooling device, so that the coolant flows through the cooling core tubes of the plurality of charging cables simultaneously in a parallel manner.

[0018] According to an exemplary embodiment of the present invention, the conductor of the charging cable is tubular, the cooling core tube is arranged in the conductor, and the charging cable further includes an outer insulating layer wrapped outside the conductor.

[0019] According to another exemplary embodiment of the present invention, the conductor has a conductor end exposed from the outer insulating layer, and the conductor end is used for being welded to the welding end of the charging terminal; the end of the cooling core tube is exposed from the outer insulating layer and is connected to the second pipe joint of the cooling module.

[0020] According to another exemplary embodiment of the present invention, the cooling system further includes: a coolant inlet pipe connected to the inlet pipe joint of the multi-way pipe joint member for supplying coolant to the coolant accommodation cavities of the plurality of cooling modules and the cooling core tubes of the plurality of charging cables.

[0021] According to another aspect of the present invention, a charging device is provided. The charging device includes: a housing; a plurality of charging terminals arranged in the housing; and the aforementioned cooling system arranged in the housing. The welding ends of the plurality of charging terminals are respectively welded to the conductor ends of the plurality of charging cables of the cooling system and are respectively fixed to the cover plates of the cooling boxes of the plurality of cooling modules, so that the heat of the charging terminals can be transferred to the coolant in the cooling box through the cover plates of the cooling boxes.

[0022] According to an exemplary embodiment of the present invention, the charging device is a charging base adapted to be mated with a charging gun, and the charging terminal is adapted to be mated and connected with a mating terminal in the charging gun.

[0023] According to another exemplary embodiment of the present invention, the charging device is a charging gun adapted to be mated with a charging base, and the charging terminal is adapted to be mated and connected with a mating terminal in the charging base.

[0024] According to another exemplary embodiment of the present invention, the welding end of the charging terminal and the conductor end of the charging cable are in a flat shape and are stacked and welded together.

[0025] In the foregoing various exemplary embodiments according to the present invention, the coolant flows into the coolant accommodation cavities of a plurality of cooling modules simultaneously in a parallel manner, such that the coolant in the plurality of cooling modules has the same temperature, such that the plurality of charging terminals can be sufficiently cooled and the temperatures are kept consistent, improving the cooling effect. In addition, in the present invention, the coolant flows through the cooling core tubes of a plurality of charging cables simultaneously in a parallel manner, such that the plurality of charging cables can be sufficiently cooled and the temperatures are kept consistent, improving the cooling effect.

[0026] Other objects and advantages of the present invention will be apparent from the following description of the present invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective schematic view showing a cooling device according to an exemplary embodiment of the present invention, in which charging terminals and charging cables are shown;

[0028] Figure 2 A vertical sectional view showing a cooling device according to an exemplary embodiment of the present invention, in which charging terminals and charging cables are shown;

[0029] Figure 3 Another vertical sectional view showing a cooling device according to an exemplary embodiment of the present invention, in which charging terminals and charging cables are shown;

[0030] Figure 4 A horizontal sectional view showing a cooling device according to an exemplary embodiment of the present invention, in which charging terminals and charging cables are shown. DETAILED DESCRIPTION OF THE INVENTION

[0031] The technical solution of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0032] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is obvious that one or more embodiments may be implemented without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

[0033] According to an overall inventive concept of the present invention, there is provided a cooling device. The cooling device includes: a plurality of cooling modules, each cooling module having a coolant accommodation chamber for accommodating a coolant, and a first pipe joint and a second pipe joint communicating with the coolant accommodation chamber; and a multi-way pipe joint member including a plurality of first mating pipe joints and a liquid inlet pipe joint communicating with all of the plurality of first mating pipe joints. The liquid inlet pipe joint is used to be connected to a coolant inlet pipe, and the plurality of first mating pipe joints are respectively connected to the first pipe joints of the plurality of cooling modules, so that the coolant can simultaneously flow into the coolant accommodation chambers of the plurality of cooling modules in a parallel manner via the multi-way pipe joint member. The second pipe joints of the plurality of cooling modules are used to be respectively connected to the cooling core pipes of a plurality of charging cables, so that the coolant in the plurality of cooling modules can simultaneously flow through the cooling core pipes of the plurality of charging cables in a parallel manner.

[0034] According to another overall inventive concept of the present invention, there is provided a cooling system. The cooling system includes: the aforementioned cooling device; and a plurality of charging cables, each charging cable including a cooling core pipe and a conductor. The ends of the cooling core pipes of the plurality of charging cables are respectively connected to the second pipe joints of the plurality of cooling modules of the cooling device, so that the coolant simultaneously flows through the cooling core pipes of the plurality of charging cables in a parallel manner.

[0035] According to another overall inventive concept of the present invention, there is provided a charging device. The charging device includes: a housing; a plurality of charging terminals disposed in the housing; and the aforementioned cooling system disposed in the housing. The welding ends of the plurality of charging terminals are respectively welded to the conductor ends of the plurality of charging cables of the cooling system and are respectively fixed to the cover plates of the cooling boxes of the plurality of cooling modules, so that the heat of the charging terminals can be transferred to the coolant in the cooling boxes via the cover plates of the cooling boxes.

[0036] Figure 1A perspective schematic view of a cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3; Figure 2 A vertical cross-sectional view of a cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3; Figure 3 Another vertical cross-sectional view of a cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3; Figure 4 A horizontal cross-sectional view of a cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3.

[0037] As Figures 1 to 4 shown, in an exemplary embodiment of the present invention, a cooling device is disclosed. The cooling device mainly includes: a plurality of cooling modules 1 and a multi-pass pipe joint 2. Each cooling module 1 has a coolant accommodation chamber 101 for accommodating coolant and a first pipe joint 13 and a second pipe joint 11a communicating with the coolant accommodation chamber 101. The multi-pass pipe joint 2 includes a plurality of first mating pipe joints 21 and a common liquid inlet pipe joint 22 communicating with the plurality of first mating pipe joints 21. The liquid inlet pipe joint 22 is used to connect with a coolant inlet pipe (not shown), and the plurality of first mating pipe joints 21 are respectively connected to the first pipe joints 13 of the plurality of cooling modules 1, so that the coolant can simultaneously flow into the coolant accommodation chambers 101 of the plurality of cooling modules 1 in parallel through the multi-pass pipe joint 2. The second pipe joints 11a of the plurality of cooling modules 1 are used to be respectively connected to the cooling core pipes 31 of the plurality of charging cables 3, so that the coolant in the plurality of cooling modules 1 can simultaneously flow through the cooling core pipes 31 of the plurality of charging cables 3 in parallel.

[0038] As Figures 1 to 4 shown, in the illustrated embodiment, the cooling module 1 includes a cooling box 10, and the inner cavity of the cooling box 10 constitutes the aforementioned coolant accommodation chamber 101. The cooling box 10 includes a box body 11 having an opening and a cover plate 12 mounted on the opening of the box body 11. The cover plate 12 is used to be in thermal contact with the welding end 4a of the charging terminal 4 to transfer the heat on the charging terminal 4 to the coolant in the cooling box 10.

[0039] As Figures 1 to 4 shown, in the illustrated embodiment, the first pipe joint 13 and the second pipe joint 11a are integrally formed with the box body 11, so that the first pipe joint 13 and the second pipe joint 11a become a part of the box body 11.

[0040] As Figures 1 to 4As shown, in the illustrated embodiment, the cover plate 12 is a heat-conducting but non-conductive insulating member, and the box body 11 is a non-heat-conducting and non-conductive insulating member. In an exemplary embodiment of the present invention, the cover plate 12 may be a heat-conducting but non-conductive ceramic member, and the box body 11 may be a non-heat-conducting and non-conductive integral injection-molded member.

[0041] As Figures 1 to 4 shown, in the illustrated embodiment, threaded holes are respectively formed in the box body 11 and the cover plate 12. The cooling module 1 further includes a threaded connector 103, and the threaded connector 103 is connected to the threaded holes in the box body 11 and the cover plate 12 to fix the cover plate 12 to the box body 11.

[0042] As Figures 1 to 4 shown, in the illustrated embodiment, the cooling module 1 further includes a sealing ring 102. The sealing ring 102 is disposed around the opening of the box body 11 and is squeezed between the box body 11 and the cover plate 12 for realizing the seal between the box body 11 and the cover plate 12.

[0043] As Figures 1 to 4 shown, in the illustrated embodiment, a sealing ring mounting groove is formed in at least one of the box body 11 and the cover plate 12, and the sealing ring 102 is positioned and installed in the sealing ring mounting groove.

[0044] As Figures 1 to 4 shown, in the illustrated embodiment, the cooling module 1 further includes a fixing device 14. The fixing device 14 is installed on the box body 11 of the cooling box 10 for fixing the welding end 4a of the charging terminal 4 to the outside of the cover plate 12 of the cooling box 10, so that the welding end 4a of the charging terminal 4 is in reliable thermal contact with the cover plate 12.

[0045] As Figures 1 to 4 shown, in the illustrated embodiment, the fixing device 14 includes a U-shaped member 140 and a bolt 143. The U-shaped member 140 is fixed to the box body 11, and a through threaded connection hole 140a is formed in the U-shaped member 140. The bolt 143 is connected to the threaded connection hole 140a and pushes the welding end 4a of the charging terminal 4 against the cover plate 12 of the cooling box 10, so that a predetermined contact force is provided between the welding end 4a of the charging terminal 4 and the cover plate 12 of the cooling box 10.

[0046] As Figures 1 to 4As shown, in the illustrated embodiment, the U-shaped member 140 includes: a pair of side plates 142 and a top plate 141. The pair of side plates 142 are respectively fixed to both sides of the box body 11. The top plate 141 is connected between the tops of the pair of side plates 142. The top plate 141 of the U-shaped member 140 faces the conductor end 32a of the charging cable 3 welded to the welded end 4a of the charging terminal 4, and a threaded connection hole 140a is formed on the top plate 141 of the U-shaped member 140. The bolt 143 abuts against the conductor end 32a of the charging cable 3 to push the welded end 4a of the charging terminal 4 against the cover plate 12 of the cooling box 10 through the conductor end 32a of the charging cable 3.

[0047] As Figures 1 to 4 shown, in the illustrated embodiment, card slots 14a are respectively formed on a pair of side plates of the U-shaped member 140, and protrusions 114a are respectively formed on both sides of the box body 11 of the cooling box 10. The protrusions 114a are engaged with the card slots 14a to respectively fix the pair of side plates of the U-shaped member 140 to both sides of the box body 11 of the cooling box 10.

[0048] As Figures 1 to 4 shown, in another exemplary embodiment of the present invention, a cooling system is also disclosed. The cooling system mainly includes: the aforementioned cooling device and a plurality of charging cables 3. Each charging cable 3 includes a cooling core tube 31 and a conductor 32. The ends 31a of the cooling core tubes 31 of the plurality of charging cables 3 are respectively connected to the second pipe joints 11a of the plurality of cooling modules 1 of the cooling device, so that the coolant flows through the cooling core tubes 31 of the plurality of charging cables 3 simultaneously in a parallel manner.

[0049] As Figures 1 to 4 shown, in the illustrated embodiment, the conductor 32 of the charging cable 3 is tubular, the cooling core tube 31 is disposed in the conductor 32, and the charging cable 3 further includes an outer insulating layer 33 wrapped around the outside of the conductor 32.

[0050] As Figures 1 to 4 shown, in the illustrated embodiment, the conductor 32 of the charging cable 3 has a conductor end 32a exposed from the outer insulating layer 33, and the conductor end 32a is used for welding to the welded end 4a of the charging terminal 4. The end 31a of the cooling core tube 31 of the charging cable 3 is exposed from the outer insulating layer 33 and is connected to the second pipe joint 11a of the cooling module 1.

[0051] As Figures 1 to 4 shown, in the illustrated embodiment, the aforementioned cooling system further includes a coolant inlet pipe (not shown), and the coolant inlet pipe is connected to the inlet pipe joint 22 of the multi-way pipe joint member 2 for supplying coolant to the coolant accommodation chambers 101 of the plurality of cooling modules 1 and the cooling core tubes 31 of the plurality of charging cables 3.

[0052] As Figures 1 to 4As shown, in another exemplary embodiment of the present invention, a charging device is also disclosed. The charging device mainly includes: a housing (not shown), a plurality of charging terminals 4, and the aforementioned cooling system. The plurality of charging terminals 4 and the cooling system are disposed in the housing. The welding ends 4a of the plurality of charging terminals 4 and the conductor ends 32a of the plurality of charging cables 3 of the cooling system are respectively welded together and are respectively fixed to the cover plates 12 of the cooling tanks 10 of the plurality of cooling modules 1, so that the heat of the charging terminals 4 can be transferred to the coolant in the cooling tanks 10 through the cover plates 12 of the cooling tanks 10.

[0053] As Figures 1 to 4 shown, in the illustrated embodiment, the charging device is a charging seat adapted to be mated with a charging gun, and the charging terminals 4 are adapted to be mated and connected with the mating terminals in the charging gun. However, the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the charging device is a charging gun adapted to be mated with a charging seat, and the charging terminals 4 are adapted to be mated and connected with the mating terminals in the charging seat.

[0054] As Figures 1 to 4 shown, in the illustrated embodiment, the welding ends 4a of the charging terminals 4 and the conductor ends 32a of the charging cables 3 are flat and are stacked and welded together. For example, they can be welded together by ultrasonic welding.

[0055] Those skilled in the art can understand that the above-described embodiments are all exemplary, and those skilled in the art can make improvements thereto. The structures described in various embodiments can be freely combined without conflicts in structure or principle. These changes should reasonably fall within the protection scope of the present invention.

[0056] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present invention and should not be construed as a limitation to the present invention.

[0057] Although some embodiments of the general concept of the present invention have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0058] It should be noted that the term "comprising" does not exclude other elements or steps, and the term "a" or "an" does not exclude a plurality. In addition, any reference numerals of the claims should not be construed as limiting the scope of the present invention.

Claims

1. A cooling device, characterized in that, Comprising: A plurality of cooling modules (1), each cooling module (1) having a coolant containing cavity (101) for containing coolant and a first pipe joint (13) and a second pipe joint (11a) communicating with the coolant containing cavity (101); and A multi-way pipe joint member (2), including a plurality of first mating pipe joints (21) and a liquid inlet pipe joint (22) communicating with all of the plurality of first mating pipe joints (21), The liquid inlet pipe joint (22) is used to be connected to a coolant inlet pipe, and the plurality of first mating pipe joints (21) are respectively connected to the first pipe joints (13) of the plurality of cooling modules (1), so that coolant can simultaneously flow into the coolant containing cavities (101) of the plurality of cooling modules (1) in parallel via the multi-way pipe joint member (2), The second pipe joints (11a) of the plurality of cooling modules (1) are used to be respectively connected to the cooling core pipes (31) of a plurality of charging cables (3), so that the coolant in the plurality of cooling modules (1) can simultaneously flow through the cooling core pipes (31) of the plurality of charging cables (3) in parallel.

2. The cooling device according to claim 1, characterized in that: The cooling module (1) includes a cooling box (10), the inner cavity of the cooling box (10) constitutes the coolant containing cavity (101), and the cooling box (10) includes a box body (11) having an opening and a cover plate (12) mounted on the opening of the box body (11); The cover plate (12) is used for thermally contacting the welding end (4a) of the charging terminal (4) to transfer the heat on the charging terminal (4) to the coolant in the cooling box (10).

3. The cooling device according to claim 2, characterized in that: The first pipe joint (13) and the second pipe joint (11a) are integrally formed with the box body (11), so that the first pipe joint (13) and the second pipe joint (11a) become a part of the box body (11).

4. The cooling device according to claim 3, characterized in that: The cover plate (12) is a heat-conducting but non-conductive insulating member, and the box body (11) is a non-heat-conducting and non-conductive insulating member.

5. The cooling device according to claim 4, characterized in that: The cover plate (12) is a heat-conducting but non-conductive ceramic member, and the box body (11) is a non-heat-conducting and non-conductive integral injection molding member.

6. The cooling device according to claim 2, characterized in that: Threaded holes are respectively formed in the box body (11) and the cover plate (12), and the cooling module (1) further includes a threaded connecting member (103), and the threaded connecting member (103) is connected to the threaded holes in the box body (11) and the cover plate (12) to fix the cover plate (12) to the box body (11).

7. The cooling device according to claim 2, characterized in that: The cooling module (1) further includes: A sealing ring (102) is disposed around an opening of the box body (11) and is pressed between the box body (11) and the cover plate (12) to achieve sealing between the box body (11) and the cover plate (12).

8. The cooling device according to claim 7, wherein: A sealing ring mounting groove is formed on at least one of the box body (11) and the cover plate (12), and the sealing ring (102) is positioned and installed in the sealing ring mounting groove.

9. The cooling device according to claim 2, wherein: The cooling module (1) further includes: A fixing device (14) is mounted on the box body (11) of the cooling box (10) for fixing a welding end (4a) of the charging terminal (4) to the outer side of the cover plate (12) of the cooling box (10) so that the welding end (4a) of the charging terminal (4) is in reliable thermal contact with the cover plate (12).

10. The cooling device according to claim 9, wherein: The fixing device (14) includes a U-shaped member (140) and a bolt (143). The U-shaped member (140) is fixed to the box body (11), and a through threaded connection hole (140a) is formed in the U-shaped member (140). The bolt (143) is connected to the threaded connection hole (140a) and pushes the welding end (4a) of the charging terminal (4) against the cover plate (12) of the cooling box (10) so that there is a predetermined contact force between the welding end (4a) of the charging terminal (4) and the cover plate (12) of the cooling box (10).

11. The cooling device according to claim 10, wherein: The U-shaped member (140) includes: A pair of side plates (142) are respectively fixed to both sides of the box body (11); and A top plate (141) is connected between the tops of the pair of side plates (142). The top plate (141) of the U-shaped member (140) faces a conductor end (32a) of a charging cable (3) welded to the welding end (4a) of the charging terminal (4). The threaded connection hole (140a) is formed in the top plate (141) of the U-shaped member (140). The bolt (143) abuts against the conductor end (32a) of the charging cable (3) to push the welding end (4a) of the charging terminal (4) against the cover plate (12) of the cooling box (10) through the conductor end (32a) of the charging cable (3).

12. The cooling device according to claim 11, wherein: Card slots (14a) are respectively formed on a pair of side plates (142) of the U-shaped member (140), and protrusions (114a) are respectively formed on both sides of the box body (11) of the cooling box (10). The protrusions (114a) engage with the card slots (14a) to respectively fix a pair of side plates (142) of the U-shaped member (140) to both sides of the box body (11) of the cooling box (10).

13. A cooling system, characterized in that, Comprising: The cooling device according to any one of claims 1-12; And A plurality of charging cables (3), each charging cable (3) comprising a cooling core tube (31) and a conductor (32), The ends (31a) of the cooling core tubes (31) of the plurality of charging cables (3) are respectively connected to the second pipe joints (11a) of the plurality of cooling modules (1) of the cooling device, such that the coolant flows through the cooling core tubes (31) of the plurality of charging cables (3) simultaneously in parallel.

14. The cooling system according to claim 13, wherein: The conductor (32) of the charging cable (3) is tubular, the cooling core tube (31) is disposed within the conductor (32), and the charging cable (3) further comprises an outer insulating layer (33) wrapped around the outside of the conductor (32).

15. The cooling system according to claim 14, wherein: The conductor (32) has a conductor end (32a) exposed from the outer insulating layer (33), and the conductor end (32a) is used for welding to a welding end (4a) of a charging terminal (4); The end (31a) of the cooling core tube (31) is exposed from the outer insulating layer (33) and is connected to the second pipe joint (11a) of the cooling module (1).

16. The cooling system according to claim 13, wherein Further comprising: A coolant inlet pipe, connected to the inlet pipe joint (22) of the multi-way pipe joint member (2), for supplying coolant to the coolant accommodation cavities (101) of the plurality of cooling modules (1) and the cooling core tubes (31) of the plurality of charging cables (3).

17. A charging device, characterized in that, Comprising: A housing; A plurality of charging terminals (4), disposed within the housing; And The cooling system according to any one of claims 13 - 16, disposed within the housing, The welding ends (4a) of the plurality of charging terminals (4) are respectively welded together with the conductor ends (32a) of the plurality of charging cables (3) of the cooling system and are respectively fixed to a cover plate (12) of a cooling tank (10) of the plurality of cooling modules (1), such that heat of the charging terminals (4) can be transferred to the coolant within the cooling tank (10) via the cover plate (12) of the cooling tank (10).

18. The charging device according to claim 17, wherein: The charging device is a charging seat adapted to mate with a charging gun, and the charging terminals (4) are adapted to mate and connect with mating terminals within the charging gun.

19. The charging device according to claim 17, wherein: The charging device is a charging gun adapted to mate with a charging seat, and the charging terminals (4) are adapted to mate and connect with mating terminals within the charging seat.

20. The charging device according to claim 17, wherein: The welding ends (4a) of the charging terminals (4) and the conductor ends (32a) of the charging cables (3) are flat and are stacked and welded together.

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