A charging gun, a connector, and a vehicle charging device.

Abstract

This utility model relates to the field of connector technology, and more particularly to a charging gun, a connector, and a vehicle charging device. The charging gun includes a plug housing, a terminal assembly, and a cable. The plug housing has a mounting cavity and has a first side and a second side opposite to each other along the insertion direction of the terminals. The terminal assembly includes a plug terminal, a positive liquid cooling plate, a negative liquid cooling plate, a positive diode assembly, and a negative diode assembly. The plug terminal includes a plug-in portion and a mounting portion. The mounting portion is installed in the mounting cavity, and the plug-in portion is exposed on the first side for plugging into the socket terminal of the socket. One end of the cable is electrically connected to the mounting portion, and the other end of the cable is electrically connected to the charging pile. The positive liquid cooling plate absorbs the heat generated by the positive terminal, and the negative liquid cooling plate absorbs the heat generated by the negative terminal. The negative diode assembly transports the coolant from the cold source to the negative liquid cooling cavity and also transports the cooled coolant after heat exchange back to the cold source. This improves the heat dissipation efficiency of the charging gun.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a charging gun, a connector, and a vehicle charging device. Background Technology

[0002] The charging device for new energy vehicles includes a socket installed on the vehicle body and a charging pile installed in the outside. The charging pile is equipped with a charging gun. The charging gun and the socket form a connector. By plugging the charging gun into the socket, the new energy vehicle can be charged.

[0003] An existing charging gun includes a housing, a plug terminal, and a cable. The plug terminal is assembled in the housing. One end of the plug terminal protrudes from the first side of the housing and is used to connect to the charging pile via the cable. The other end of the plug terminal protrudes from the second side of the housing opposite to the first side and is used to connect with the exposed socket terminal on the vehicle body to establish a conductive connection between the socket and the plug. The air-cooled box is installed inside the housing.

[0004] However, existing charging guns have poor heat dissipation at the plug terminals, which affects charging efficiency. Summary of the Invention

[0005] This utility model provides a charging gun, a connector, and a vehicle charging device, aiming to solve the problem that the heat dissipation effect of the plug terminals of existing charging guns is poor, which affects the charging efficiency.

[0006] To address the aforementioned issues, this utility model provides a charging gun, comprising a plug housing, a terminal assembly, and a cable. The plug housing has an installation cavity and a first side and a second side opposite to each other along the insertion direction of the terminal. The terminal assembly includes a plug terminal, a positive liquid cooling plate, a negative liquid cooling plate, a positive electrode assembly, and a negative electrode assembly. The plug terminal includes a plug-in portion and a mounting portion. The mounting portion is installed within the installation cavity, and the plug-in portion is exposed on the first side for insertion and engagement with a socket terminal of a receptacle. One end of the cable is electrically connected to the mounting portion, and the other end of the cable is electrically connected to a charging pile.

[0007] The plug has two terminals, which are a positive terminal and a negative terminal, respectively;

[0008] The mounting part of the positive terminal is a positive terminal mounting part. The positive terminal liquid cooling plate is mounted on the positive terminal mounting part. The positive terminal liquid cooling plate is used to absorb the heat generated by the positive terminal. The positive terminal liquid cooling plate is provided with a positive terminal liquid cooling cavity. The positive terminal tube group is used to connect the positive terminal liquid cooling cavity and the cold source. The positive terminal tube group is used to transport the coolant of the cold source to the positive terminal liquid cooling cavity so that the coolant in the positive terminal liquid cooling cavity exchanges heat with the positive terminal liquid cooling plate, and is used to transport the cooled coolant after heat exchange to the cold source.

[0009] The mounting part of the negative terminal is a negative terminal mounting part. The negative terminal liquid cooling plate is mounted on the negative terminal mounting part. The negative terminal liquid cooling plate is used to absorb the heat generated by the negative terminal. The negative terminal liquid cooling plate is provided with a negative terminal liquid cooling cavity. The negative terminal tube group is used to connect the negative terminal liquid cooling cavity and the cold source. The negative terminal tube group is used to transport the coolant of the cold source to the negative terminal liquid cooling cavity so that the coolant in the negative terminal liquid cooling cavity exchanges heat with the negative terminal liquid cooling plate, and is used to transport the cooled coolant after heat exchange to the cold source.

[0010] Optionally, the positive electrode mounting part is provided with a positive electrode mounting groove, the positive electrode liquid cooling plate is installed in the positive electrode mounting groove of the positive electrode terminal, and the outer surface of the positive electrode terminal is in contact with the inner wall of the positive electrode mounting groove.

[0011] Optionally, the positive electrode mounting portion is L-shaped, and the positive electrode mounting portion includes a first section extending along the insertion direction of the plug housing and a second section perpendicular to the insertion direction of the plug housing, the first section and the second section forming the mounting groove;

[0012] The first segment is provided with a positive electrode through hole, which extends through the first segment along the insertion direction perpendicular to the plug housing. The positive electrode liquid cooling plate is provided with a positive electrode through hole, which extends through the positive electrode liquid cooling plate along the insertion direction perpendicular to the plug housing. The positive electrode through hole and the positive electrode through hole are bolted together.

[0013] Optionally, the cable includes a positive electrode cable, which is welded to one side of the first segment facing away from the positive electrode liquid cooling plate.

[0014] Optionally, the outer peripheral surface of the positive electrode liquid cooling plate is coated with thermally conductive silicone grease.

[0015] Optionally, the sidewalls of the positive electrode mounting groove are coated with thermally conductive silicone.

[0016] Optionally, the charging gun further includes a positive electrode liquid inlet connector, the positive electrode liquid cooling plate is provided with a positive electrode liquid inlet communicating with the positive electrode liquid cooling cavity, the positive electrode liquid inlet connector is installed in the positive electrode liquid inlet, and the positive electrode tube group is connected to the positive electrode liquid inlet connector.

[0017] Optionally, the charging gun further includes a positive electrode liquid outlet connector, the positive electrode liquid cooling plate is provided with a positive electrode liquid outlet communicating with the positive electrode liquid cooling cavity, the positive electrode liquid outlet connector is installed in the positive electrode liquid outlet, and the positive electrode liquid outlet pipe is connected to the positive electrode liquid outlet connector.

[0018] According to the charging gun provided in this embodiment of the present invention, the positive electrode liquid cooling plate and the negative electrode liquid cooling plate are independently arranged. The positive electrode liquid cooling plate is used to absorb the heat generated by the positive terminal, and the negative electrode liquid cooling plate is used to absorb the heat generated by the negative terminal. The positive terminal and the negative terminal do not interfere with each other, and the positive electrode liquid cooling plate and the negative electrode liquid cooling plate do not interfere with each other, which can improve the heat dissipation efficiency of the charging gun, thereby improving the charging efficiency of the charging gun.

[0019] This utility model embodiment also provides a connector, including a socket and the charging gun described above. The socket includes a positive socket terminal and a negative socket terminal. The positive socket terminal is inserted into the insertion part of the positive terminal, and the negative socket terminal is inserted into the insertion part of the negative terminal.

[0020] This utility model embodiment also provides a vehicle charging device, including a charging pile and the aforementioned connector. The charging pile includes a cold source, the positive electrode tube group is connected to the positive electrode liquid cooling plate and the cold source, and the negative electrode tube group is connected to the negative electrode liquid cooling plate and the cold source. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a charging gun provided in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a charging gun provided in one embodiment of the present invention (with the back cover removed).

[0024] Figure 3 yes Figure 2 A schematic diagram of the middle terminal assembly.

[0025] Instruction manual drawing reference numerals: 1. Plug housing; 2. Front housing; 3. Rear housing; 4. Sealing plate; 5. Positive electrode baffle; 6. Negative electrode baffle; 7. Positive terminal; 8. Positive electrode mounting part; 9. Second section; 10. First section; 11. Positive electrode through hole; 12. Positive electrode mounting slot; 13. Positive electrode liquid cooling plate; 14. Positive electrode liquid inlet connector; 15. Positive electrode liquid inlet pipe; 16. Positive electrode liquid outlet connector; 17. Positive electrode liquid outlet pipe ; 18. Positive electrode cable; 19. Negative electrode terminal; 20. Negative electrode mounting part; 21. Fourth section; 22. Third section; 23. Negative electrode mounting groove; 24. Negative electrode through hole; 25. Negative electrode liquid cooling plate; 26. Negative electrode liquid inlet connector; 27. Negative electrode liquid inlet pipe; 28. Negative electrode liquid outlet connector; 29. ​​Negative electrode liquid outlet pipe; 30. Negative electrode cable; 31. Plug-in part; 32. Positive electrode through hole; 34. Negative electrode through hole. Detailed Implementation

[0026] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 3 As shown, an embodiment of the present invention provides a charging gun, including a plug housing 1, a terminal assembly, and a cable. The plug housing 1 has an installation cavity and has a first side and a second side opposite to each other along the insertion direction of the terminal. The terminal assembly includes a plug terminal, a positive liquid cooling plate 13, a negative liquid cooling plate 25, a positive electrode assembly, and a negative electrode assembly. The plug terminal includes a plug-in part 31 and a mounting part. The mounting part is installed in the installation cavity, and the plug-in part 31 is exposed on the first side for plugging and mating with the socket terminal of the socket. One end of the cable is electrically connected to the mounting part, and the other end of the cable is electrically connected to the charging pile.

[0029] The plug has two terminals, namely the positive terminal 7 and the negative terminal 19.

[0030] The mounting part of the positive terminal 7 is the positive terminal mounting part 8. The positive terminal liquid cooling plate 13 is mounted on the positive terminal mounting part 8. The positive terminal liquid cooling plate 13 is used to absorb the heat generated by the positive terminal 7. The positive terminal liquid cooling plate 13 is provided with a positive terminal liquid cooling cavity. The positive terminal tube group is used to connect the positive terminal liquid cooling cavity and the cold source. The positive terminal tube group is used to transport the coolant from the cold source to the positive terminal liquid cooling cavity so that the coolant in the positive terminal liquid cooling cavity exchanges heat with the positive terminal liquid cooling plate 13, and is used to transport the cooled liquid after heat exchange to the cold source.

[0031] The mounting part of the negative terminal 19 is the negative terminal mounting part 20. The negative terminal liquid cooling plate 25 is mounted on the negative terminal mounting part 20. The negative terminal liquid cooling plate 25 is used to absorb the heat generated by the negative terminal 19. The negative terminal liquid cooling plate 25 is provided with a negative terminal liquid cooling cavity. The negative terminal tube group is used to connect the negative terminal liquid cooling cavity and the cold source. The negative terminal tube group is used to transport the coolant of the cold source to the negative terminal liquid cooling cavity so that the coolant in the negative terminal liquid cooling cavity exchanges heat with the negative terminal liquid cooling plate 25, and is used to transport the cooled liquid after heat exchange to the cold source.

[0032] In this embodiment, the positive electrode liquid cooling plate 13 and the negative electrode liquid cooling plate 25 are independently arranged. The positive electrode liquid cooling plate 13 is used to absorb the heat generated by the positive terminal 7, and the negative electrode liquid cooling plate 25 is used to absorb the heat generated by the negative terminal 19. The positive terminal 7 and the negative terminal 19 do not interfere with each other, and the positive electrode liquid cooling plate 13 and the negative electrode liquid cooling plate 25 do not interfere with each other, which can improve the heat dissipation efficiency of the charging gun, thereby improving the charging efficiency of the charging gun.

[0033] In this embodiment, the positive electrode assembly includes a positive electrode inlet pipe 15 and a positive electrode outlet pipe 17. The positive electrode inlet pipe 15 is used to connect the positive electrode liquid cooling cavity and the cold source, and the positive electrode outlet pipe 17 is used to connect the positive electrode liquid cooling cavity and the cold source. The positive electrode inlet pipe 15 is used to transport the coolant from the cold source into the positive electrode liquid cooling cavity so that the coolant in the positive electrode liquid cooling cavity exchanges heat with the positive electrode liquid cooling plate 13. The positive electrode outlet pipe 17 is used to transport the cooled coolant after heat exchange to the cold source.

[0034] In this embodiment, the negative electrode assembly includes a negative electrode inlet pipe 27 and a negative electrode outlet pipe 29. The negative electrode inlet pipe 27 is used to connect the negative electrode liquid cooling cavity and the cold source, and the negative electrode outlet pipe 29 is used to connect the negative electrode liquid cooling cavity and the cold source. The negative electrode inlet pipe 27 is used to transport the coolant from the cold source to the negative electrode liquid cooling cavity so that the coolant in the negative electrode liquid cooling cavity exchanges heat with the negative electrode liquid cooling plate 25. The negative electrode outlet pipe 29 is used to transport the cooled coolant after heat exchange to the cold source.

[0035] In one embodiment, the positive electrode mounting part 8 is provided with a positive electrode mounting groove 12, and the positive electrode liquid cooling plate 13 is installed in the positive electrode mounting groove 12 of the positive electrode terminal 7, and the outer surface of the positive electrode terminal 7 is in contact with the inner wall of the positive electrode mounting groove 12.

[0036] In this embodiment, the outer surface of the positive terminal 7 is in contact with the inner wall of the positive terminal mounting groove 12, so that the heat generated when the positive terminal 7 is working can be transferred to the surface of the positive terminal liquid cooling plate 13 through the positive terminal mounting part 8, and then transferred to the coolant in the positive terminal liquid cooling cavity by the positive terminal liquid cooling plate 13.

[0037] In this embodiment, by providing an installation groove, the contact area between the positive terminal 7 and the positive liquid cooling plate 13 can be increased, thereby improving the heat exchange efficiency between the positive terminal 7 and the positive liquid cooling plate 13.

[0038] In one embodiment, the positive electrode mounting portion 8 is L-shaped and includes a first segment 10 extending along the insertion direction of the plug housing 1 and a second segment 9 perpendicular to the insertion direction of the plug housing 1. The first segment 10 and the second segment 9 form a mounting groove.

[0039] The first segment 10 is provided with a positive electrode through hole 11, which passes through the first segment 10 along the insertion direction perpendicular to the plug housing 1. The positive electrode liquid cooling plate 13 is provided with a positive electrode through hole 32, which passes through the positive electrode liquid cooling plate 13 along the insertion direction perpendicular to the plug housing 1. The positive electrode through hole 11 and the positive electrode through hole 32 are bolted together.

[0040] In this embodiment, the second segment 9 is connected between the plug-in portion 31 of the positive terminal 7 and the first segment 10. The first segment 10 and the second segment 9 form an installation groove, which facilitates the disassembly and assembly of the positive electrode liquid cooling plate 13 and is convenient for design.

[0041] In this embodiment, the positive electrode through hole 32 on the positive electrode liquid cooling plate 13 is located apart from the positive electrode liquid cooling cavity, and the positive electrode through hole 32 and the positive electrode liquid cooling cavity do not belong to the same space.

[0042] In one embodiment, the cable includes a positive cable 18, which is welded to one side of the first segment 10 facing away from the positive liquid cooling plate 13.

[0043] In this embodiment, the positive electrode cable 18 is welded and fixed to one side of the first segment 10 facing away from the positive electrode liquid cooling plate 13 for easy connection.

[0044] In one embodiment, the outer peripheral surface of the positive electrode liquid cooling plate 13 is coated with thermally conductive silicone grease, and the sidewall of the positive electrode mounting groove 12 is coated with thermally conductive silicone.

[0045] In this embodiment, the use of thermal grease and thermal silicone can further improve the heat exchange efficiency between the positive terminal 7 and the positive liquid cooling plate 13.

[0046] In one embodiment, the charging gun further includes a positive electrode liquid inlet connector 14. The positive electrode liquid cooling plate 13 is provided with a positive electrode liquid inlet communicating with the positive electrode liquid cooling cavity. The positive electrode liquid inlet connector 14 is installed inside the positive electrode liquid inlet, and the positive electrode tube group is connected to the positive electrode liquid inlet connector 14.

[0047] In this embodiment, one end of the positive electrode liquid inlet pipe 15 is connected to the positive electrode liquid inlet head, and the positive electrode liquid inlet pipe 15 is connected to the cold source of the charging pile. This facilitates connection.

[0048] In one embodiment, the charging gun further includes a positive electrode liquid outlet connector 16. The positive electrode liquid cooling plate 13 is provided with a positive electrode liquid outlet communicating with the positive electrode liquid cooling cavity. The positive electrode liquid outlet connector 16 is installed inside the positive electrode liquid outlet, and the positive electrode liquid outlet pipe 17 is connected to the positive electrode liquid outlet connector 16.

[0049] In this embodiment, one end of the negative electrode inlet pipe 27 is connected to the negative electrode inlet head, and the negative electrode inlet pipe 27 is connected to the cold source of the charging pile. This facilitates connection.

[0050] In one embodiment, the negative electrode mounting part 20 is provided with a negative electrode mounting groove 23, and the negative electrode liquid cooling plate 25 is installed in the negative electrode mounting groove 23 of the negative electrode terminal 19, and the outer surface of the negative electrode terminal 19 is in contact with the inner wall of the negative electrode mounting groove 23.

[0051] In this embodiment, the outer surface of the negative terminal 19 is in contact with the inner wall of the negative terminal mounting groove 23, so that the heat generated by the negative terminal 19 during operation can be transferred through the negative terminal mounting part 20 to the surface of the negative terminal liquid cooling plate 25, and then transferred by the negative terminal liquid cooling plate 25 to the coolant in the negative terminal liquid cooling cavity.

[0052] In this embodiment, by providing an installation groove, the contact area between the negative terminal 19 and the negative electrode liquid cooling plate 25 can be increased, thereby improving the heat exchange efficiency between the negative terminal 19 and the negative electrode liquid cooling plate 25.

[0053] In one embodiment, the negative electrode mounting portion 20 is L-shaped and includes a third segment 22 extending along the insertion direction of the plug housing 1 and a fourth segment 21 perpendicular to the insertion direction of the plug housing 1. The third segment 22 and the fourth segment 21 form a mounting groove.

[0054] The third section 22 is provided with a negative electrode through hole 24, which passes through the third section 22 in a direction perpendicular to the insertion direction of the plug housing 1. The negative electrode liquid cooling plate 25 is provided with a negative electrode through hole 34, which passes through the negative electrode liquid cooling plate 25 in a direction perpendicular to the insertion direction of the plug housing 1. The negative electrode through hole 24 and the negative electrode through hole 34 are bolted together.

[0055] In this embodiment, the fourth segment 21 is connected between the plug-in portion 31 of the negative terminal 19 and the third segment 22. The third segment 22 and the fourth segment 21 form a negative terminal mounting groove 23, which facilitates the disassembly and assembly of the negative terminal liquid cooling plate 25 and is convenient for design.

[0056] In this embodiment, the position of the negative electrode through hole 34 on the negative electrode liquid cooling plate 25 is separated from the negative electrode liquid cooling cavity, and the negative electrode through hole 34 and the negative electrode liquid cooling cavity do not belong to the same space.

[0057] In one embodiment, the cable includes a negative cable 30, which is welded to one side of the third segment 22 facing away from the negative liquid cooling plate 25.

[0058] In this embodiment, the negative electrode cable 30 is welded and fixed to one side of the third segment 22 facing away from the negative electrode liquid cooling plate 25 for easy connection.

[0059] In one embodiment, the outer peripheral surface of the negative electrode liquid cooling plate 25 is coated with thermally conductive silicone grease, and the sidewall of the negative electrode mounting groove 23 is coated with thermally conductive silicone.

[0060] In this embodiment, the use of thermal grease and thermal silicone can further improve the heat exchange efficiency between the negative electrode 19 and the negative electrode liquid cooling plate 25.

[0061] In one embodiment, the charging gun further includes a negative electrode liquid inlet connector 26. The negative electrode liquid cooling plate 25 is provided with a negative electrode liquid inlet communicating with the negative electrode liquid cooling cavity. The negative electrode liquid inlet connector 26 is installed inside the negative electrode liquid inlet, and the negative electrode tube assembly is connected to the negative electrode liquid inlet connector 26.

[0062] In this embodiment, one end of the negative electrode inlet pipe 27 is connected to the negative electrode inlet head, and the negative electrode inlet pipe 27 is connected to the cold source of the charging pile. This facilitates connection.

[0063] In one embodiment, the charging gun further includes a negative electrode liquid outlet connector 28, and a negative electrode liquid outlet is provided on the negative electrode liquid cooling plate 25 that communicates with the negative electrode liquid cooling cavity. The negative electrode liquid outlet connector 28 is installed inside the negative electrode liquid outlet, and the negative electrode liquid outlet pipe 29 is connected to the negative electrode liquid outlet connector 28.

[0064] In this embodiment, one end of the negative electrode inlet pipe 27 is connected to the negative electrode inlet head, and the negative electrode inlet pipe 27 is connected to the cold source of the charging pile. This facilitates connection.

[0065] In this embodiment, a sealing plate 4 is also installed inside the mounting cavity. The sealing plate 4 is connected to the inner wall of the mounting cavity. The sealing plate 4 is provided with a positive electrode baffle 5 and a negative electrode baffle 6. The positive electrode baffle 5 and the negative electrode baffle 6 are spaced apart. The positive electrode baffle 5 stops the bolts used to connect the positive electrode liquid cooling plate 13 and the positive electrode mounting part 8, and the negative electrode baffle 6 stops the bolts used to connect the negative electrode liquid cooling plate 25 and the negative electrode mounting part 20.

[0066] In this embodiment, the plug housing 1 includes a front housing 2 and a rear housing 3, which together form an installation cavity.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] According to the charging gun provided in this embodiment of the present invention, the positive electrode liquid cooling plate 13 and the negative electrode liquid cooling plate 25 are independently arranged. The positive electrode liquid cooling plate 13 is used to absorb the heat generated by the positive terminal 7, and the negative electrode liquid cooling plate 25 is used to absorb the heat generated by the negative terminal 19. The positive terminal 7 and the negative terminal 19 do not interfere with each other, and the positive electrode liquid cooling plate 13 and the negative electrode liquid cooling plate 25 do not interfere with each other, which can improve the heat dissipation efficiency of the charging gun, thereby improving the charging efficiency of the charging gun.

[0069] An embodiment of this utility model also provides a connector, including a socket and a charging gun on it. The socket includes a positive socket terminal and a negative socket terminal. The positive socket terminal is inserted into the insertion part 31 of the positive terminal 7, and the negative socket terminal is inserted into the insertion part 31 of the negative terminal 19.

[0070] An embodiment of this utility model also provides a vehicle charging device, including a charging pile and the aforementioned connector. The charging pile includes a cold source, a positive electrode assembly connected to a positive electrode liquid cooling plate 13 and the cold source, and a negative electrode assembly connected to a negative electrode liquid cooling plate 25 and the cold source.

[0071] In this embodiment, the charging pile is provided with two spaced liquid chambers. The positive electrode inlet pipe 15 and the positive electrode outlet pipe 17 are connected to one of the liquid chambers, and the negative electrode inlet pipe 27 and the negative electrode outlet pipe 29 are connected to the other liquid chamber, so as to avoid the liquid in the positive electrode liquid cooling chamber and the negative electrode liquid cooling chamber from meeting.

[0072] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A charging gun, characterized in that, The device includes a plug housing (1), a terminal assembly, and a cable. The plug housing (1) has an installation cavity and a first side and a second side opposite to each other along the insertion direction of the terminal. The terminal assembly includes a plug terminal, a positive liquid cooling plate (13), a negative liquid cooling plate (25), a positive tube group, and a negative tube group. The plug terminal includes a plug-in part (31) and a mounting part. The mounting part is installed in the installation cavity. The plug-in part (31) is exposed on the first side and is used to plug into the socket terminal of the socket. One end of the cable is electrically connected to the mounting part, and the other end of the cable is exposed on the second side and is used to electrically connect to the charging pile. The plug has two terminals, namely a positive terminal (7) and a negative terminal (19). The mounting part of the positive terminal (7) is the positive terminal mounting part (8), the positive terminal liquid cooling plate (13) is mounted on the positive terminal mounting part (8), the positive terminal liquid cooling plate (13) is used to absorb the heat generated by the positive terminal (7), the positive terminal liquid cooling plate (13) is provided with a positive terminal liquid cooling cavity, the positive terminal tube group is used to connect the positive terminal liquid cooling cavity and the cold source, the positive terminal tube group is used to transport the coolant of the cold source to the positive terminal liquid cooling cavity, so that the coolant in the positive terminal liquid cooling cavity exchanges heat with the positive terminal liquid cooling plate (13), and is used to transport the cooled liquid after heat exchange to the cold source; The mounting part of the negative terminal (19) is the negative terminal mounting part (20). The negative terminal liquid cooling plate (25) is mounted on the negative terminal mounting part (20). The negative terminal liquid cooling plate (25) is used to absorb the heat generated by the negative terminal (19). The negative terminal liquid cooling plate (25) is provided with a negative terminal liquid cooling cavity. The negative terminal tube group is used to connect the negative terminal liquid cooling cavity and the cold source. The negative terminal tube group is used to transport the coolant of the cold source to the negative terminal liquid cooling cavity so that the coolant in the negative terminal liquid cooling cavity exchanges heat with the negative terminal liquid cooling plate (25) and is used to transport the cooled liquid after heat exchange to the cold source.

2. The charging gun according to claim 1, characterized in that, The positive electrode mounting part (8) is provided with a positive electrode mounting groove (12), and the positive electrode liquid cooling plate (13) is installed in the positive electrode mounting groove (12) of the positive electrode terminal (7). The outer surface of the positive electrode terminal (7) is in contact with the inner wall of the positive electrode mounting groove (12).

3. The charging gun according to claim 2, characterized in that, The positive electrode mounting part (8) is L-shaped. The positive electrode mounting part (8) includes a first section (10) extending along the insertion direction of the plug housing (1) and a second section (9) perpendicular to the insertion direction of the plug housing (1). The first section (10) and the second section (9) form the mounting groove. The first segment (10) is provided with a positive electrode through hole (11), which penetrates the first segment (10) along the insertion direction perpendicular to the plug housing (1). The positive electrode liquid cooling plate (13) is provided with a positive electrode through hole (32), which penetrates the positive electrode liquid cooling plate (13) along the insertion direction perpendicular to the plug housing (1). The positive electrode through hole (11) and the positive electrode through hole (32) are bolted together.

4. The charging gun according to claim 3, characterized in that, The cable includes a positive electrode cable (18), which is welded to one side of the first segment (10) facing away from the positive electrode liquid cooling plate (13).

5. The charging gun according to claim 2, characterized in that, The outer peripheral surface of the positive electrode liquid cooling plate (13) is coated with thermally conductive silicone grease.

6. The charging gun according to claim 2, characterized in that, The positive electrode mounting groove (12) is coated with thermally conductive silicone on its sidewall.

7. The charging gun according to claim 2, characterized in that, The charging gun also includes a positive electrode liquid inlet connector (14). The positive electrode liquid cooling plate (13) is provided with a positive electrode liquid inlet that communicates with the positive electrode liquid cooling cavity. The positive electrode liquid inlet connector (14) is installed inside the positive electrode liquid inlet. The positive electrode tube group is connected to the positive electrode liquid inlet connector (14).

8. The charging gun according to claim 2, characterized in that, The charging gun also includes a positive electrode liquid outlet connector (16), the positive electrode liquid cooling plate (13) is provided with a positive electrode liquid outlet that communicates with the positive electrode liquid cooling cavity, the positive electrode liquid outlet connector (16) is installed in the positive electrode liquid outlet, and the positive electrode liquid outlet pipe (17) is connected to the positive electrode liquid outlet connector (16).

9. A connector, characterized in that, The device includes a socket and a charging gun as described in any one of claims 1 to 8. The socket includes a positive socket terminal and a negative socket terminal. The positive socket terminal is engaged with the plug-in portion (31) of the positive terminal (7), and the negative socket terminal is engaged with the plug-in portion (31) of the negative terminal (19).

10. A vehicle charging device, characterized in that, The device includes a charging pile and the connector as described in claim 9. The charging pile includes a cold source, the positive electrode assembly is connected to the positive electrode liquid cooling plate (13) and the cold source, and the negative electrode assembly is connected to the negative electrode liquid cooling plate (25) and the cold source.

Images