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

Abstract

This utility model relates to the field of charging gun technology, and more particularly to a terminal assembly, a charging gun, a connector, and a vehicle charging device. The terminal assembly includes a plug terminal, a liquid cooling plate, and a force application mechanism. The plug terminal includes an insertion part and a heat dissipation part. The insertion part is used to insert and cooperate with the socket terminal of a socket. The heat dissipation part has a heat dissipation surface on the side facing the liquid cooling plate. The force applied to the liquid cooling plate by the force application mechanism keeps the liquid cooling plate in thermally conductive contact with the heat dissipation surface. The liquid cooling plate is used to absorb the heat generated by the plug terminal. This improves the heat dissipation effect and thus improves the charging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, and in particular to a terminal assembly, 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. The new energy vehicle is charged by plugging the charging gun into the socket.

[0003] An existing charging gun includes a housing, plug terminals, cables, and a liquid cooling plate. The plug terminals are assembled in the housing, with one end of the plug terminals exposed from the first side of the housing for connecting to a charging pile via a cable. The other end of the plug terminals is exposed from the second side of the housing opposite to the first side for mating with an exposed socket terminal on the vehicle body to achieve a conductive connection between the socket and the plug. The liquid cooling plate is installed inside the housing and contacts the plug terminals for heat dissipation.

[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 terminal assembly, 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 solve the above problems, this utility model provides a terminal assembly, including a plug terminal, a liquid cooling plate, and a force application mechanism. The plug terminal includes an insertion part and a heat dissipation part. The insertion part is used to plug into and cooperate with the socket terminal of the socket. The heat dissipation part has a heat dissipation surface on the side facing the liquid cooling plate. The force applied to the liquid cooling plate by the force application mechanism makes the liquid cooling plate and the heat dissipation surface maintain thermally conductive contact. The liquid cooling plate is used to absorb the heat generated by the plug terminals.

[0007] Optionally, the force-applying mechanism includes an elastic element and a screw, the liquid cooling plate is provided with a guide hole, the liquid cooling plate has a first surface and a second surface opposite to each other along a first direction, the second surface is closer to the heat dissipation surface than the first surface, and the guide hole penetrates the liquid cooling plate along the first direction; The heat dissipation part is provided with a threaded hole. The screw includes a shank and a head. The head is connected to one end of the shank. The other end of the shank is provided with a threaded section. The shank passes through the guide hole. The threaded section is threadedly connected to the threaded hole. The elastic element is compressed between the head and the first surface, so that the elastic element applies a force to the liquid cooling plate pointing towards the heat dissipation part.

[0008] Optionally, the elastic element is sleeved on the rod portion, and a stop surface is provided on the side of the head facing the heat dissipation portion. The diameter of the head is larger than the diameter of the rod portion, and the diameter of the elastic element is larger than the diameter of the guide hole. The end of the elastic element near the heat dissipation portion abuts against the first surface, and the end of the elastic element away from the heat dissipation portion abuts against the stop surface.

[0009] Optionally, the elastic element is a spring washer.

[0010] Optionally, the terminal assembly further includes a pipe group, the liquid cooling plate has a liquid cooling cavity, the pipe group is connected to the liquid cooling cavity and the cold source, the pipe group is used to transport the coolant of the cold source to the liquid cooling cavity so that the coolant in the liquid cooling cavity exchanges heat with the liquid cooling plate, and is used to transport the cooled coolant after heat exchange to the cold source.

[0011] Optionally, the heat dissipation part is plate-shaped, the heat dissipation surface is flat, and the side of the liquid cooling plate facing the heat dissipation part is flat.

[0012] Optionally, the terminal assembly further includes a cable adapted to connect the heat sink to the charging pile, the cable having a mounting portion that is plate-shaped and electrically connected to the side of the heat sink facing away from the liquid cooling plate.

[0013] According to the terminal assembly provided in this embodiment of the present invention, the force-applying mechanism can apply a force toward the heat dissipation part to the liquid cooling plate, so that the liquid cooling plate and the heat dissipation surface of the heat dissipation part maintain thermally conductive contact, and prevent the liquid cooling plate from separating from the heat dissipation part, thereby ensuring that the liquid cooling plate can stably absorb the heat of the heat dissipation part, thereby reducing the overall temperature of the plug terminal, improving the heat dissipation effect, and thus improving the charging efficiency.

[0014] This utility model embodiment also provides a charging gun, including a plug housing and the aforementioned terminal assembly. The plug housing has an installation cavity, the heat dissipation part is installed in the installation cavity, the insertion part is exposed outside the plug housing for plugging and mating with the socket terminal of the socket, and the end of the cable away from the installation part is exposed outside the plug housing for electrical connection with the charging pile.

[0015] This utility model embodiment also provides a connector, including a socket and the above-mentioned charging gun, wherein the socket includes socket terminals, and the socket terminals are inserted and mated with the insertion part.

[0016] This utility model embodiment also provides a vehicle charging device, including a charging pile and the aforementioned connector, wherein the charging pile includes a cold source, and the pipe assembly is connected to the liquid cooling plate and the cold source. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of a terminal assembly provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0019] Reference numerals in the accompanying drawings: 1. Plug terminal; 2. Liquid cooling plate; 3. Cable; 4. Force application mechanism; 5. Insertion part; 6. Heat dissipation part; 7. Heat dissipation surface; 8. Threaded hole; 9. First surface; 10. Second surface; 11. Guide hole; 12. Liquid inlet; 13. Liquid outlet; 14. Screw; 15. Head; 16. Rod part; 17. Threaded section; 18. Elastic element; 19. Spring washer; 20. Mounting part; 21. Connecting part. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] like Figure 1 and Figure 2As shown, one embodiment of the present invention provides a terminal assembly, including a plug terminal 1, a liquid cooling plate 2, and a force application mechanism 4. The plug terminal 1 includes an insertion part 5 and a heat dissipation part 6. The insertion part 5 is used to insert and cooperate with the socket terminal of the socket. The heat dissipation part 6 has a heat dissipation surface 7 on the side facing the liquid cooling plate 2. The force applied by the force application mechanism 4 to the liquid cooling plate 2 makes the liquid cooling plate 2 and the heat dissipation surface 7 maintain thermally conductive contact.

[0023] The liquid cooling plate 2 is used to absorb the heat generated by the plug terminal 1.

[0024] In this embodiment, the force-applying mechanism 4 can apply a force toward the heat dissipation part 6 to the liquid cooling plate 2, so that the liquid cooling plate 2 and the heat dissipation surface 7 of the heat dissipation part 6 maintain thermally conductive contact, preventing the liquid cooling plate 2 from separating from the heat dissipation part 6, thereby ensuring that the liquid cooling plate 2 can stably absorb the heat of the heat dissipation part 6, thereby reducing the overall temperature of the plug terminal 1, improving the heat dissipation effect, and thus improving the charging efficiency.

[0025] In this embodiment, the terminal assembly also includes a pipe group. The liquid cooling plate 2 is provided with a liquid cooling cavity. The pipe group is connected to the liquid cooling cavity and the cold source. The pipe group is used to transport the coolant from the cold source to the liquid cooling cavity so that the coolant in the liquid cooling cavity exchanges heat with the liquid cooling plate 2, and is used to transport the cooled coolant after heat exchange to the cold source.

[0026] In this embodiment, the liquid cooling plate 2 is provided with a liquid inlet 12 and a liquid outlet 13 that communicate with the liquid cooling cavity.

[0027] In this embodiment, the pipe assembly includes an inlet pipe and an outlet pipe. The inlet pipe is connected to the inlet port 12 and the outlet of the cold source of the charging pile, so that the coolant of the cold source enters the liquid cooling chamber through the inlet pipe. The coolant in the liquid cooling chamber absorbs the heat from the liquid cooling plate 2. The outlet pipe is connected to the outlet port 13 and the return port of the cold source of the charging pile, so that the coolant in the liquid cooling chamber that has exchanged heat with the liquid cooling plate 2 flows back to the cold source through the outlet pipe.

[0028] In this embodiment, the force applied by the force-applying mechanism 4 to the liquid cooling plate 2 ensures that the liquid cooling plate 2 and the heat dissipation surface 7 maintain thermally conductive contact. Thermally conductive contact refers to direct contact, with the side of the liquid cooling plate 2 facing the heat dissipation part 6 in direct contact with the heat dissipation surface 7. In other embodiments, thermally conductive adhesive is provided on the side of the liquid cooling plate 2 facing the heat dissipation part 6, and the thermally conductive adhesive is in contact with the heat dissipation surface 7. Of course, in other embodiments, thermally conductive adhesive can also be provided on the heat dissipation surface 7, or thermally conductive adhesive can be provided on both the liquid cooling plate 2 and the heat dissipation surface 7.

[0029] In this embodiment, both the charging pile and its cold source are existing technologies and will not be described in detail here.

[0030] In one embodiment, the force-applying mechanism 4 includes an elastic element 18 and a screw 14. The liquid cooling plate 2 is provided with a guide hole 11. The liquid cooling plate 2 has a first surface 9 and a second surface 10 that are opposite each other along a first direction. The second surface 10 is closer to the heat dissipation surface 7 than the first surface 9. The guide hole 11 penetrates the liquid cooling plate 2 along the first direction.

[0031] The heat dissipation part 6 is provided with a threaded hole 8. The screw 14 includes a shank 16 and a head 15. The head 15 is connected to one end of the shank 16, and the other end of the shank 16 is provided with a threaded section 17. The shank 16 passes through the guide hole 11, and the threaded section 17 is threadedly connected to the threaded hole 8. The elastic element 18 is compressed between the head 15 and the first surface 9, so that the elastic element 18 applies a force to the liquid cooling plate 2 in the direction of the heat dissipation part 6.

[0032] In this embodiment, the liquid cooling plate 2 is plate-shaped, and the first direction refers to the thickness direction of the liquid cooling plate 2.

[0033] In this embodiment, the threaded hole 8 provided on the heat dissipation part 6 is a blind hole and does not penetrate the lower surface of the heat dissipation part 6.

[0034] In this embodiment, the rod 16 passes through the guide hole 11, and the threaded section 17 is threadedly connected to the threaded hole 8, so that the rod 16 can guide and limit the liquid cooling plate 2 in the first direction, and can prevent the liquid cooling plate 2 from tilting.

[0035] In this embodiment, during installation, the elastic member 18 is in a compressed state, which makes the elastic member 18 tend to recover its own deformation. Under the obstruction of the head 15, the elastic member 18 applies a force toward the heat dissipation part 6 to the liquid cooling plate 2 so that the second surface 10 of the liquid cooling plate 2 remains in contact with the heat dissipation surface 7.

[0036] In one embodiment, the elastic member 18 is sleeved on the rod portion 16, and the head 15 has a stop surface on the side facing the heat dissipation portion 6. The diameter of the head 15 is larger than the diameter of the rod portion 16, and the diameter of the elastic member 18 is larger than the diameter of the guide hole 11. The end of the elastic member 18 near the heat dissipation portion 6 abuts against the first surface 9, and the end of the elastic member 18 away from the heat dissipation portion 6 abuts against the stop surface.

[0037] In this embodiment, the diameter of the head 15 is greater than the diameter of the rod 16, and the diameter of the rod 16 is greater than the diameter of the threaded section 17.

[0038] In this embodiment, the elastic element 18 is sleeved on the rod portion 16. This facilitates design and installation.

[0039] In one embodiment, the elastic element 18 is a spring washer 19.

[0040] In this embodiment, the spring washer 19 is a common structure on the market, which is easy to design and can save production costs.

[0041] In one embodiment, the heat dissipation part 6 is plate-shaped, the heat dissipation surface 7 is planar, and the side of the liquid cooling plate 2 facing the heat dissipation part 6 is planar.

[0042] In this embodiment, the heat dissipation surface 7 is a plane.

[0043] In this embodiment, the first surface 9 is a plane.

[0044] In this embodiment, the contact between the heat dissipation surface 7 and the first surface 9 is a contact between two planes, so that the heat dissipation part 6 and the liquid cooling plate 2 have the largest contact area, thereby further improving the heat dissipation effect.

[0045] In one embodiment, the terminal assembly further includes a cable 3 adapted to connect the heat dissipation part 6 to the charging pile. The cable 3 has a mounting part 20, which is plate-shaped and electrically connected to the side of the heat dissipation part 6 facing away from the liquid cooling plate 2.

[0046] In this embodiment, the mounting part 20 is plate-shaped.

[0047] In this embodiment, the mounting part 20 and the second surface 10 are electrically connected by welding.

[0048] In this embodiment, the cable 3 also has a connecting part 21 connected to the mounting part 20, and the connecting part 21 connects the mounting part 20 to the power module of the charging pile.

[0049] In this embodiment, the power module of the charging pile is based on existing technology.

[0050] 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.

[0051] According to the terminal assembly provided in this embodiment of the present invention, the force application mechanism 4 can apply a force toward the heat dissipation part 6 to the liquid cooling plate 2, so that the liquid cooling plate 2 and the heat dissipation surface 7 of the heat dissipation part 6 maintain thermally conductive contact, preventing the liquid cooling plate 2 from separating from the heat dissipation part 6, thereby ensuring that the liquid cooling plate 2 can stably absorb the heat of the heat dissipation part 6, thereby reducing the overall temperature of the plug terminal 1, improving the heat dissipation effect, and thus improving the charging efficiency.

[0052] In addition, one embodiment of the present invention also provides a charging gun, including a plug housing and the aforementioned terminal assembly. The plug housing has an installation cavity, a heat dissipation part 6 is installed in the installation cavity, and an insertion part 5 is exposed outside the plug housing for insertion and mating with the socket terminal of the socket. The end of the cable 3 away from the installation part 20 is exposed outside the plug housing for electrical connection with the charging pile.

[0053] In addition, one embodiment of the present invention also provides a connector, including a socket and the above-mentioned charging gun, wherein the socket includes socket terminals, and the socket terminals are inserted into the insertion part 5.

[0054] In this embodiment, the insertion and mating between the socket terminal and the insertion part 5 is a prior art technique.

[0055] In addition, one embodiment of the present invention also provides a vehicle charging device, including a charging pile and the aforementioned connector. The charging pile includes a cold source, and a pipe assembly is connected to the liquid cooling plate 2 and the cold source.

[0056] In this embodiment, the connecting part 21 of the cable 3 connects the mounting part 20 to the power module of the charging pile.

[0057] In this embodiment, the power module and cooling source of the charging pile are both existing technologies.

[0058] 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 terminal assembly characterized by, The device includes a plug terminal (1), a liquid cooling plate (2), and a force application mechanism (4). The plug terminal (1) includes an insertion part (5) and a heat dissipation part (6). The insertion part (5) is used to plug into the socket terminal of the socket. The heat dissipation part (6) has a heat dissipation surface (7) on the side facing the liquid cooling plate (2). The force application mechanism (4) applies a force to the liquid cooling plate (2) so that the liquid cooling plate (2) and the heat dissipation surface (7) maintain thermally conductive contact. The liquid cooling plate (2) is used to absorb the heat generated by the plug terminal (1).

2. The terminal assembly of claim 1, wherein, The force application mechanism (4) includes an elastic element (18) and a screw (14). The liquid cooling plate (2) is provided with a guide hole (11). The liquid cooling plate (2) has a first surface (9) and a second surface (10) opposite each other in a first direction. The second surface (10) is closer to the heat dissipation surface (7) than the first surface (9). The guide hole (11) penetrates the liquid cooling plate (2) in the first direction. The heat dissipation part (6) is provided with a threaded hole (8). The screw (14) includes a shank (16) and a head (15). The head (15) is connected to one end of the shank (16). The other end of the shank (16) is provided with a threaded section (17). The shank (16) passes through the guide hole (11). The threaded section (17) is threadedly connected to the threaded hole (8). The elastic element (18) is compressed between the head (15) and the first surface (9), so that the elastic element (18) applies a force to the liquid cooling plate (2) pointing towards the heat dissipation part (6).

3. The terminal assembly according to claim 2, characterized in that, The elastic element (18) is sleeved on the rod (16). The head (15) has a stop surface on the side facing the heat dissipation part (6). The diameter of the head (15) is larger than the diameter of the rod (16). The diameter of the elastic element (18) is larger than the diameter of the guide hole (11). The end of the elastic element (18) near the heat dissipation part (6) abuts against the first surface (9). The end of the elastic element (18) away from the heat dissipation part (6) abuts against the stop surface.

4. The terminal assembly according to claim 3, characterized in that, The elastic element (18) is a spring washer (19).

5. The terminal assembly according to claim 1, characterized in that, The terminal assembly also includes a pipe group. The liquid cooling plate (2) is provided with a liquid cooling cavity. The pipe group is connected to the liquid cooling cavity and the cold source. The pipe group is used to transport the coolant of the cold source to the liquid cooling cavity so that the coolant in the liquid cooling cavity exchanges heat with the liquid cooling plate (2) and is used to transport the cooled liquid after heat exchange to the cold source.

6. The terminal assembly according to claim 1, characterized in that, The heat dissipation part (6) is plate-shaped, the heat dissipation surface (7) is flat, and the side of the liquid cooling plate (2) facing the heat dissipation part (6) is flat.

7. The terminal assembly according to claim 6, characterized in that, The terminal assembly also includes a cable (3) adapted to connect the heat dissipation part (6) to the charging pile. The cable (3) has a mounting part (20) which is plate-shaped and electrically connected to one side of the heat dissipation part (6) facing away from the liquid cooling plate (2).

8. A charging gun, characterized in that, The device includes a plug housing and a terminal assembly as described in any one of claims 1 to 7. The plug housing has a mounting cavity, the heat dissipation part (6) is installed in the mounting cavity, and the insertion part (5) is exposed outside the plug housing for insertion and mating with the socket terminal of the socket.

9. A connector, characterized in that, The device includes a socket and the charging gun as described in claim 8, wherein the socket includes socket terminals that are plugged into the insertion part (5).

10. A vehicle charging device, characterized in that, The device includes a charging pile and the connector as described in claim 9, wherein the charging pile includes a cold source.

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