Cooling device, cooling system, and charging device

Abstract

To provide a cooling device which achieves simplification of a structure of the cooling device and reduction of assembly steps and manufacturing costs, and to provide a cooling system and a charging device.SOLUTION: A cooling device comprises: cooling modules (1) each having a storage chamber for storing a coolant and a first pipe joint (13) and a second pipe joint communicating with the storage chamber; and a multi-channel pipe joint component (2) including a plurality of first fitting pipe joints (21) connected to each other. The first fitting pipe joints (21) of the multi-channel pipe joint component (2) are respectively connected to the first pipe joints (13) of the cooling modules (1). The second pipe joints of the cooling modules (1) are used to be connected to cooling core pipes (31) of a plurality of charging cables (3). Thus, the coolant flows through the storage chambers of the cooling modules (1) and the cooling core pipes (31) of the charging cables (3).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202311869732.X, filed with the China National Intellectual Property Administration on December 29, 2023, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a cooling device, a cooling system including the cooling device, and a charging device including the cooling system.

Background Art

[0003] In the prior art, a charging station generally includes a charging station housing, charging terminals provided on the charging station housing, and a charging cable electrically connected to the charging terminals. To improve the charging speed, it is necessary to increase the charging current. Currently, the requirement for the charging current is as high as 600 A, and in the future, it may further increase to 1000 A. When this high current flows through the charging cable and the charging terminals, the temperature inside the charging station housing and the temperature of the charging cable rise rapidly. To prevent excessive temperature rise, in the prior art, usually, the diameter of the charging cable is increased, but this increases the volume and weight of the charging station product and raises the cost.

[0004] To improve the cooling performance of the charging station, recently, liquid - cooled charging stations have been proposed. A housing chamber for accommodating a coolant is provided in the housing of the liquid - cooled charging station, and the housing chamber has an inlet pipe joint for connecting to a coolant inlet pipe and an outlet pipe joint for connecting to a coolant outlet pipe. Therefore, in these technical solutions, it is necessary to provide separate coolant inlet and outlet pipes, and it is also necessary to connect the coolant inlet pipe and the coolant outlet pipe to the inlet pipe joint and the outlet pipe joint of the housing chamber respectively. This increases the cost of the liquid - cooled charging station and complicates the assembly.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention is made to overcome or alleviate at least one aspect of the above-mentioned drawbacks.

Means for Solving the Problems

[0006] According to an aspect of the present invention, a cooling device is provided. The cooling device includes a plurality of cooling modules, each cooling module having a housing chamber for containing a coolant, and a first pipe joint and a second pipe joint communicating with the housing chamber, and a multi-channel pipe joint component including a plurality of first fitting pipe joints interconnected with each other. The plurality of first fitting pipe joints of the multi-channel pipe joint component are respectively connected to the first pipe joints of the plurality of cooling modules. Thus, the housing chambers of the plurality of cooling modules are connected to each other via the multi-channel pipe joint component. The second pipe joints of the plurality of cooling modules are used to be respectively connected to the cooling core pipes of the plurality of charging cables. Thus, the coolant can flow through the housing chambers of the plurality of cooling modules and the cooling core pipes of the plurality of charging cables.

[0007] According to an exemplary embodiment of the present invention, the cooling module includes a cooling box for defining the housing chamber. 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 to be in thermal contact with the welded end of the charging terminal to transfer the heat of the charging terminal to the coolant in the cooling box.

[0008] 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. Thus, the first pipe joint and the second pipe joint are part of the box body.

[0009] According to another exemplary embodiment of the present invention, the cover plate is an insulating component that can transfer heat but cannot transfer electricity, and the box body is an insulating component that can neither transfer heat nor electricity.

[0010] According to another exemplary embodiment of the present invention, the cover plate is a ceramic component that can conduct heat but not electricity, and the box body is an injection-molded component that can neither conduct heat nor electricity.

[0011] According to another exemplary embodiment of the present invention, threaded holes are respectively formed in the box body and the cover plate, the cooling module further includes threaded connection pieces, and the threaded connection pieces are connected to the threaded holes of the box body and the cover plate to fix the cover plate to the box body.

[0012] According to another exemplary embodiment of the present invention, the cooling module further includes a sealing ring, the sealing ring is provided around the opening of the box body, and is compressed between the box body and the cover plate to achieve a seal between the box body and the cover plate.

[0013] 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.

[0014] According to another exemplary embodiment of the present invention, the cooling module further includes a fixing device, the fixing device is mounted on the box body of the cooling box, and is used to fix the welded end of the charging terminal to the outside of the cover plate of the cooling box. Therefore, the welded end of the charging terminal is in reliable thermal contact with the cover plate.

[0015] According to another exemplary embodiment of the present invention, the fixing device includes a U-shaped component and a bolt. The U-shaped component is fixed to the box body, a threaded connection hole is formed through the U-shaped component, and the bolt is connected to the threaded connection hole to press the welded end of the charging terminal against the cover plate of the cooling box. Therefore, there is a predetermined contact force between the welded end of the charging terminal and the cover plate of the cooling box.

[0016] According to another exemplary embodiment of the present invention, the U-shaped component includes a pair of side plates respectively fixed to both sides of the box body, and an upper plate connected between the upper parts of the pair of side plates. The upper plate of the U-shaped component faces the conductor end of the charging cable welded to the welded end of the charging terminal. The screw connection hole is formed in the upper plate of the U-shaped component, and the bolt is pressed against the conductor end of the charging cable, and through the conductor end of the charging cable, the welded end of the charging terminal is pressed against the cover plate of the cooling box.

[0017] According to another exemplary embodiment of the present invention, snap slots are respectively formed in a pair of side plates of the U-shaped component, and protrusions are respectively formed on both sides of the box body of the cooling box. The protrusions engage with the snap slots to fix the pair of side plates of the U-shaped component to both sides of the box body of the cooling box.

[0018] According to another aspect of the present invention, a cooling system is provided. The cooling system includes the above-mentioned cooling device and a plurality of charging cables, and each charging cable includes a cooling core tube and a conductor. The ends of the cooling core tubes of the plurality of charging cables are respectively connected to the second pipe joints of the plurality of cooling modules of the cooling device. One of the cooling core tubes of the plurality of charging cables is used as a coolant inlet pipe, and the rest are used as coolant outlet pipes.

[0019] According to an exemplary embodiment of the present invention, the conductor of the charging cable is tubular, the cooling core tube is provided on the conductor, and the charging cable also includes an outer insulating layer wound around the outside of the conductor.

[0020] According to another exemplary embodiment of the present invention, the conductor has a conductor end exposed from the outer insulating layer for use in welding to the welded end of the charging terminal, and 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.

[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 disposed in the housing, and the above-described cooling system attached to the housing. The welded 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. Thus, the heat of the charging terminals can be transmitted 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 stand suitable for fitting a charging gun, and the charging terminals are suitable for fitting the mating terminals of the charging gun.

[0023] According to another exemplary embodiment of the present invention, the charging device is a charging gun suitable for fitting a charging stand, and the charging terminals are suitable for fitting the mating terminals of the charging stand.

[0024] According to another exemplary embodiment of the present invention, the welded ends of the charging terminals and the conductor ends of the charging cables are flat and are stacked and welded to each other.

[0025] In the above exemplary embodiment according to the present invention, the accommodation chambers of the plurality of cooling modules are interconnected and are configured to be respectively connected to the cooling core tubes of the plurality of charging cables. Thus, without providing separate coolant inlet tubes and coolant outlet tubes, the coolant can flow in and out through the cooling core tubes of the charging cables, simplifying the structure of the cooling device, reducing the number of assembly steps, and reducing the manufacturing cost.

[0026] The above and other features of the present invention will become more apparent by describing the exemplary embodiments in detail with reference to the accompanying drawings.

Brief Description of the Drawings

[0027]

Figure 1

Figure 2

Figure 3

Figure 4

DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements. However, the present disclosure can be embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present disclosure to those skilled in the art.

[0029] In the following detailed description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, it will be apparent that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and devices are shown schematically in order to simplify the drawings.

[0030] According to a general concept of the present invention, a cooling device is provided. The cooling device includes a plurality of cooling modules, each cooling module having a housing chamber for containing a coolant, and a first pipe joint and a second pipe joint communicating with the housing chamber, a multi-channel pipe joint component including a plurality of first fitting pipe joints interconnected with each other. The plurality of first fitting pipe joints of the multi-channel pipe joint component are respectively connected to the first pipe joints of the plurality of cooling modules. Thus, the housing chambers of the plurality of cooling modules are connected to each other via the multi-channel pipe joint component. The second pipe joints of the plurality of cooling modules are used to be respectively connected to the cooling core pipes of the plurality of charging cables. Thus, the coolant can flow through the housing chambers of the plurality of cooling modules and the cooling core pipes of the plurality of charging cables.

[0031] According to another general concept of the present invention, a cooling system is provided. The cooling system includes the above-mentioned 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. One of the cooling core pipes of the plurality of charging cables is used as a coolant inlet pipe, and the rest are used as coolant outlet pipes.

[0032] According to another general concept of the present invention, a charging device is provided. The charging device includes a housing, a plurality of charging terminals disposed in the housing, and the above-mentioned cooling system mounted on the housing. The welded 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 fixed to the cover plates of the cooling boxes of the plurality of cooling modules. Thus, the heat of the charging terminals can be transmitted to the coolant in the cooling box through the cover plates of the cooling boxes.

[0033] FIG. 1 is an explanatory perspective view of a cooling device according to an exemplary embodiment of the present invention, showing a charging terminal 4 and a charging cable 3. FIG. 2 is a vertical cross-sectional view of the cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3. FIG. 3 is another vertical cross-sectional view of the cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3. FIG. 4 is a horizontal cross-sectional view of the cooling device according to an exemplary embodiment of the present invention, showing the charging terminal 4 and the charging cable 3.

[0034] As shown in FIGS. 1 to 4, 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-channel pipe joint component 2. Each cooling module 1 includes a housing chamber 101 for housing a coolant, and a first pipe joint 13 and a second pipe joint 11a communicating with the housing chamber 101. The multi-channel pipe joint component 2 includes a plurality of first fitting pipe joints 21 that are interconnected with each other. The plurality of first fitting pipe joints 21 of the multi-channel pipe joint component 2 are respectively connected to the first pipe joints 13 of the plurality of cooling modules 1, and thus, the housing chambers 101 of the plurality of cooling modules 1 are connected to each other via the multi-channel pipe joint component 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, and thus, the coolant can flow through the housing chambers 101 of the plurality of cooling modules 1 and the cooling core pipes 31 of the plurality of charging cables 3.

[0035] As shown in FIGS. 1 to 4, in the illustrated embodiment, the cooling module 1 includes a cooling box 10, and the internal cavity of the cooling box 10 constitutes the above-mentioned housing chamber 101. The cooling box 10 includes a box body 11 having an opening, and a cover plate 12 attached to the opening of the box body 11. The cover plate 12 is used to be in thermal contact with the welded end 4a of the charging terminal 4 to transfer the heat of the charging terminal 4 to the coolant in the cooling box 10.

[0036] As shown in FIGS. 1 to 4, in the illustrated embodiment, the first pipe joint 13 and the second pipe joint 11a are integrally formed with the box body 11. Therefore, the first pipe joint 13 and the second pipe joint 11a are part of the box body 11.

[0037] As shown in FIGS. 1 to 4, in the illustrated embodiment, the cover plate 12 is an insulating component that can conduct heat but not electricity, and the box body 11 is an insulating component that can neither conduct heat nor electricity. In an exemplary embodiment of the present invention, the cover plate 12 is a ceramic component that can conduct heat but not electricity, and the box body 11 is an injection-molded component that can neither conduct heat nor electricity.

[0038] As shown in FIGS. 1 to 4, in the illustrated embodiment, screw holes are respectively formed in the box body 11 and the cover plate 12. The cooling module 1 also includes a screw connection piece 103, and the screw connection piece 103 is connected to the screw holes of the box body 11 and the cover plate 12 to fix the cover plate 12 to the box body 11.

[0039] As shown in FIGS. 1 to 4, in the illustrated embodiment, the cooling module 1 further includes a seal ring 102, and the seal ring 102 is disposed around the opening of the box body 11 and is compressed between the box body 11 and the cover plate 12 to realize the seal between the box body 11 and the cover plate 12.

[0040] As shown in FIGS. 1 to 4, in the illustrated embodiment, a seal ring mounting groove is formed in at least one of the box body 11 and the cover plate 12, and the seal ring 101 is positioned and mounted in the seal ring mounting groove.

[0041] As shown in FIGS. 1 to 4, in the illustrated embodiment, the cooling module 1 further includes a fixing device 14. The fixing device 14 is mounted on the box body 11 of the cooling box 10 to fix the welded end portion 4a of the charging terminal 4 to the outside of the cover plate 12 of the cooling box 10. Therefore, the welded end portion 4a of the charging terminal 4 is in reliable thermal contact with the cover plate 12.

[0042] As shown in FIGS. 1 to 4, in the illustrated embodiment, the fixing device 14 includes a U-shaped part 140 and a bolt 143. The U-shaped part 140 is fixed to the box body 11, and a screw connection hole 140a is formed through the U-shaped part 140. The bolt 143 is connected to the screw connection hole 140a to press the welded end portion 4a of the charging terminal 4 against the cover plate 12 of the cooling box 10. Therefore, there is a predetermined contact force between the welded end portion 4a of the charging terminal 4 and the cover plate 12 of the cooling box 10.

[0043] As shown in FIGS. 1 to 4, in the illustrated embodiment, the U-shaped part 140 includes a pair of side plates 142 and an upper plate 141. The pair of side plates 142 are respectively fixed to both sides of the box body 11. The upper plate 141 is connected between the upper portions of the pair of side plates 142. The upper plate 141 of the U-shaped part 140 faces the conductor end portion 32a of the charging cable 3 welded to the welded end portion 4a of the charging terminal 4, and the screw connection hole 140a is formed in the upper plate 141 of the U-shaped part 140. The bolt 143 is pressed against the conductor end portion 32a of the charging cable 3 to press the welded end portion 4a of the charging terminal 4 against the cover plate 12 of the cooling box 10 through the conductor end portion 32a of the charging cable 3.

[0044] As shown in FIGS. 1 to 4, in the illustrated embodiment, snap slots 14a are respectively formed in a pair of side plates of the U-shaped part 140, and protrusions 114a are formed on both sides of the box body 11 of the cooling box 10. The protrusions 114a are engaged with the snap slots 14a to fix a pair of side plates of the U-shaped part 140 to both sides of the box body 11 of the cooling box 10.

[0045] As shown in FIGS. 1 to 4, in another exemplary embodiment of the present invention, a cooling system is also disclosed. The cooling system mainly includes the above 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. One of the cooling core tubes 31 of the plurality of charging cables 3 is used as a coolant inlet tube, and the rest are used as coolant outlet tubes.

[0046] As shown in FIGS. 1 to 4, in the illustrated embodiment, the conductor 32 of the charging cable 3 is tubular, and the cooling core tube 31 is provided on the conductor 32. The charging cable 3 also includes an outer insulating layer 33 wound around the outside of the conductor 32.

[0047] As shown in FIGS. 1 to 4, in the illustrated embodiment, the conductor 32 of the charging cable 3 has a conductor end 32a exposed from the outer insulating layer 33, which is used for welding to the welded end 4a of the charging terminal 4. The end 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.

[0048] As shown in FIGS. 1 to 4, 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 above cooling system. The plurality of charging terminals 4 and the cooling system are mounted on the housing. The welded ends 4a of the plurality of charging terminals 4 are respectively welded to the conductor ends 12a of the plurality of charging cables 3 of the cooling system and are respectively fixed to the cover plates 12 of the cooling boxes 10 of the plurality of cooling modules 1. Therefore, the heat of the charging terminals 4 can be transmitted to the coolant in the cooling box 10 through the cover plates 12 of the cooling boxes 10.

[0049] As shown in FIGS. 1 to 4, in the illustrated embodiment, the charging device is a charging stand suitable for fitting into a charging gun, and the charging terminal 4 is suitable for fitting into the mating terminal of 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 suitable for fitting into a charging stand, and the charging terminal 4 is suitable for fitting into the mating terminal of the charging stand.

[0050] As shown in FIGS. 1 to 4, in the illustrated embodiment, the welded end portion 4a of the charging terminal 4 and the conductor end portion 32a of the charging cable 3 are flat and are stacked on top of each other and welded. For example, the welded end portion 4a of the charging terminal 4 and the conductor end portion 32a of the charging cable 3 can be welded to each other using ultrasonic waves.

[0051] It should be understood by those skilled in the art that the above embodiments are exemplary and not limiting. For example, those skilled in the art can make many modifications to the above embodiments without conflicting in configuration or principle, and can freely combine various features described in different embodiments with each other.

[0052] Although some exemplary embodiments have been illustrated and described, it will be understood by those skilled in the art that various changes or modifications can be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

[0053] As used herein, elements described in the singular and preceded by the word "a" or "an" should be understood to exclude the plural of those elements or steps unless explicitly stated to the contrary. Further, reference to "an embodiment" of the present invention is not intended to be construed as excluding the existence of additional embodiments that also incorporate the recited features. Further, unless explicitly stated otherwise, an embodiment "comprising" or "having" one element or a plurality of elements with a particular characteristic can include additional such elements that do not have that characteristic.

Claims

1. A cooling device comprising: a plurality of cooling modules (1), each cooling module (1) having a receiving chamber (101) for containing a coolant, and a first pipe joint (13) and a second pipe joint (11a) communicating with the receiving chamber (101); and a multi-channel pipe joint component (2) including a plurality of first fitting pipe joints (21) interconnected with each other; wherein the plurality of first fitting pipe joints (21) of the multi-channel pipe joint component (2) are respectively connected to the first pipe joints (13) of the plurality of cooling modules (1), and thus the receiving chambers (101) of the plurality of cooling modules (1) are connected to each other via the multi-channel pipe joint component (2); the second pipe joints (11a) of the plurality of cooling modules (1) are respectively used to connect to the cooling core pipes (31) of a plurality of charging cables (3), and thus the coolant can flow through the receiving chambers (101) of the plurality of cooling modules (1) and the cooling core pipes (31) of the plurality of charging cables (3).

2. The cooling module (1) includes a cooling box (10) for defining the receiving chamber (101), the cooling box (10) including 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 in thermal contact with the welded end (4a) of a charging terminal (4) and is used to transfer the heat of the charging terminal (4) to the coolant in the cooling box (10). The cooling device according to Claim 1.

3. The first pipe joint (13) and the second pipe joint (11a) are integrally formed with the box body (11), and thus the first pipe joint (13) and the second pipe joint (11a) are part of the box body (11). The cooling device according to Claim 2.

4. The cover plate (12) is an insulating component that can conduct heat but not electricity, and the box body (11) is an insulating component that can conduct neither heat nor electricity. The cooling device according to Claim 3.

5. The cover plate (12) is a ceramic component that can conduct heat but not electricity, and the box body (11) is an injection-molded component that can conduct neither heat nor electricity. The cooling device according to claim 4.

6. Threaded holes are formed in the box body (11) and the cover plate (12) respectively. The cooling module (1) further includes a threaded connection piece (103). The threaded connection piece (103) is connected to the threaded holes of the box body (11) and the cover plate (12) to fix the cover plate (12) to the box body (11). The cooling device according to claim 2.

7. The cooling module (1) further includes a sealing ring (102). The sealing ring (102) is provided around the opening of the box body (11) and is compressed between the box body (11) and the cover plate (12) to achieve a seal between the box body (11) and the cover plate (12). The cooling device according to claim 2.

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

9. The cooling module (1) further includes a fixing device (14). The fixing device (14) is mounted on the box body (11) of the cooling box (10) and is used to fix the welding end portion (4a) of the charging terminal (4) outside the cover plate (12) of the cooling box (10). Therefore, the welding end portion (4a) of the charging terminal (4) is in reliable thermal contact with the cover plate (12). The cooling device according to claim 2.

10. The fixing device (14) includes a U-shaped component (140) and a bolt (143). The U-shaped component (140) is fixed to the box body (11), and a screw connection hole (140a) is formed through the U-shaped component (140). The bolt (143) is connected to the screw connection hole (140a), pressing the welded end portion (4a) of the charging terminal (4) against the cover plate (12) of the cooling box (10). Therefore, there is a predetermined contact force between the welded end portion (4a) of the charging terminal (4) and the cover plate (12) of the cooling box (10). The cooling device according to claim 9.

11. The U-shaped component (140) is a pair of side plates (142) respectively fixed to both sides of the box body (11), and an upper plate (141) connected between upper portions of the pair of side plates (142). It includes The upper plate (141) of the U-shaped component (140) faces the conductor end portion (32a) of the charging cable (3) welded to the welded end portion (4a) of the charging terminal (4). The screw connection hole (140a) is formed in the upper plate (141) of the U-shaped component (140). The bolt (143) is pressed against the conductor end portion (32a) of the charging cable (3), and through the conductor end portion (32a) of the charging cable (3), the welded end portion (4a) of the charging terminal (4) is pressed against the cover plate (12) of the cooling box (10). The cooling device according to claim 10.

12. Snap slots (14a) are respectively formed in the pair of side plates (142) of the U-shaped component (140). Protrusions (114a) are respectively formed on both sides of the box body (11) of the cooling box (10). The protrusions (114a) engage with the snap slots (14a) to fix the pair of side plates (142) of the U-shaped component (140) to both sides of the box body (11) of the cooling box (10). The cooling device according to claim 11.

13. A cooling system, the cooling device according to any one of claims 1 to 12, a plurality of charging cables (3), each charging cable (3) including a cooling core tube (31) and a conductor (32), the charging cable (3) and is provided with 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. A cooling system in which one of the cooling core tubes (31) of the plurality of charging cables (3) is used as a coolant inlet tube and the rest are used as coolant outlet tubes. **Claim 14** The conductor (32) of the charging cable (3) is tubular, the cooling core tube (31) is provided on the conductor (32), and the charging cable (3) also includes an outer insulating layer (33) wound around the outside of the conductor (32). The cooling system according to claim 13. **Claim 15** The conductor (32) has a conductor end (32a) exposed from the outer insulating layer (33) and is used for welding to the welded end (4a) of the 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). The cooling system according to claim 14. **Claim 16** A charging device, A housing, A plurality of charging terminals (4) arranged in the housing, The cooling system according to any one of claims 13 to 15, which is mounted on the housing, And comprising, The welded ends (4a) of the plurality of charging terminals (4) are respectively welded to the conductor ends (32a) of the plurality of charging cables (3) of the cooling system and are respectively fixed to the cover plates (12) of the cooling boxes (10) of the plurality of cooling modules (1). Therefore, heat of the charging terminals (4) can be transmitted to the coolant in the cooling box (10) through the cover plates (12) of the cooling box (10). A charging device. **Claim 17** The charging device is a charging stand suitable for fitting a charging gun, and the charging terminals (4) are suitable for fitting to mating terminals of the charging gun. The charging device according to claim 16. **Claim 18** The charging device is a charging gun suitable for fitting to a charging stand, and the charging terminals (4) are suitable for fitting to mating terminals of the charging stand. The charging device according to claim 16. **Claim 19** The charging device according to claim 16, wherein the welded end portion (4a) of the charging terminal (4) and the conductor end portion (32a) of the charging cable (3) are flat and stacked and welded to each other.

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