A water-cooling structure of a charging gun

Abstract

The utility model discloses a water -cooling structure of charging gun, including charging terminal, the one side of charging terminal forms cable connecting surface, and the other side of charging terminal is equipped with insulating cooling water tank, and the outer wall of insulating cooling water tank is connected with charging terminal, and insulating cooling water tank is connected with water tank inlet joint and water tank outlet joint, and the chamber is formed in insulating cooling water tank, and water tank inlet joint is connected with water tank outlet joint through chamber. The water -cooling structure of charging gun of the utility model is favorable for reducing the cooling cost of charging gun, and also is favorable for protecting the environment.

Description

Technical Field

[0001] This utility model relates to the field of charging guns, specifically to a water-cooled structure for a charging gun. Background Technology

[0002] Currently, charging guns are used to conductively connect to the charging sockets of new energy vehicles. The charging terminals on the charging gun are conductively plugged into the female terminals of the charging socket. Due to the relatively high resistance at the contact points between the charging terminals and the female terminals, the charging terminals of the charging gun generate significant heat. Therefore, existing liquid-cooled charging terminals, such as the "Liquid-cooled charging terminal with enhanced heat exchange" in Chinese Utility Model Patent Publication No. CN223007004U, employ a cooling structure that allows the cooling medium to directly contact the charging terminals. This cooling structure can use a dedicated insulating coolant as the cooling medium; however, dedicated insulating coolants are expensive and difficult to dispose of, and indiscriminate discharge can pollute the environment. Using water as the cooling medium can reduce costs, but water's poor insulation can lead to leakage. Therefore, it is necessary to develop a water-cooled structure for the charging gun. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a water-cooled structure for a charging gun, which helps to reduce the cooling cost of the charging gun.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The present invention discloses a water-cooled structure for a charging gun, including a charging terminal. A cable connection surface is formed on one side of the charging terminal, and an insulating cooling water tank is provided on the opposite side of the charging terminal. The outer wall of the insulating cooling water tank is attached to the charging terminal. The insulating cooling water tank is connected to a water tank inlet connector and a water tank outlet connector. A cavity is formed inside the insulating cooling water tank, and the water tank inlet connector is connected to the water tank outlet connector through the cavity.

[0006] Preferably, the cavity has an inlet on the side of the chamber that is relatively far from the cable connection surface, and the cavity inlet is connected to the water tank inlet connector.

[0007] Preferably, the water tank inlet connector is adapted to be plugged into the tank cavity inlet.

[0008] Preferably, the water tank outlet connector is integrated with the insulated cooling water tank.

[0009] Preferably, a groove is formed on the upper part of the charging terminal, one end of the insulating cooling water tank is adapted to be disposed in the groove, and the other end of the insulating cooling water tank protrudes out of the groove.

[0010] Preferably, the groove has an upper sidewall, one end of the upper sidewall has a slot, and the water tank outlet connector has an annular groove on its outside, with the slot fitting into the annular groove.

[0011] Preferably, the lower end of the insulating cooling water tank has a lower lug, which is fixedly connected to the charging terminal by a radial screw, and the upper side wall of the groove is fixedly connected to the insulating cooling water tank by an axial screw.

[0012] Preferably, an inner cavity is formed in the upper part of the charging terminal, and the insulating cooling water tank is adapted to be disposed within the inner cavity of the terminal.

[0013] Preferably, a water tank protrusion is formed on one side of the lower end of the insulating cooling water tank, the water tank protrusion extends out of the charging terminal, and the water tank protrusion is inserted into the water tank inlet connector.

[0014] Preferably, the convex tube portion of the water tank is integrally connected to an installation block, the water tank inlet connector is formed into a plate, and the plate is fixedly connected to the installation block.

[0015] Compared with the prior art, the advantages of this utility model are as follows: a cable connection surface is formed on one side of the charging terminal, and an insulating cooling water tank is provided on the other side corresponding to the charging terminal. The outer wall of the insulating cooling water tank is attached to the charging terminal. The insulating cooling water tank is connected to a water tank inlet connector and a water tank outlet connector. A box cavity is formed inside the insulating cooling water tank. The water tank inlet connector is connected to the water tank outlet connector through the box cavity. This allows the water cooling structure of the charging gun of this utility model to use water as the cooling medium, which helps to reduce the cooling cost of the charging gun and also helps to protect the environment. Attached Figure Description

[0016] Figure 1 This is a top-view perspective view of the water-cooled structure of the charging gun according to the first embodiment of this utility model.

[0017] Figure 2 This is a cross-sectional perspective view of the water-cooled structure of the charging gun according to the first embodiment of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the water-cooled charging gun structure with the gun head housing removed, which is the first embodiment of this utility model.

[0019] Figure 4 This is an exploded view of the water-cooled structure of the charging gun with the gun head housing removed, according to the first embodiment of this utility model.

[0020] Figure 5This is an exploded view of the charging terminal and the insulating cooling water tank according to the first embodiment of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the insulated cooling water tank according to the first embodiment of this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the water tank inlet connector according to the first embodiment of the present utility model.

[0023] Figure 8 This is a top-view perspective view of the water-cooled structure of the charging gun according to the second embodiment of this utility model.

[0024] Figure 9 This is a cross-sectional view of the water-cooled structure of the charging gun according to the second embodiment of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of a water-cooled charging gun structure with the gun head housing removed, representing the second embodiment of this utility model.

[0026] Figure 11 This is a three-dimensional structural diagram of the combination of the insulating cooling water tank and the charging terminal in the second embodiment of this utility model.

[0027] Figure 12 This is a three-dimensional structural diagram of the charging terminal according to the second embodiment of the present invention.

[0028] Figure 13 This is a front perspective view of the insulated cooling water tank according to the second embodiment of the present invention.

[0029] Figure 14 This is a three-dimensional structural diagram of the back of the insulated cooling water tank according to the second embodiment of this utility model.

[0030] Labeling Explanation: Charging terminal 1; Pin part 10; Cable connection surface 100; Snap-fit ​​neck 101; Mounting screw hole 102; Groove 11; Upper side wall of groove 111; Slot 1111; Terminal inner cavity 13; Inner cavity inlet 131; Inner cavity outlet 132; Insulating cooling water tank 2; Box cavity 20; Lower lug 21; Box cavity inlet 22; Mounting block 23; Inner arc surface 2301; Water tank protruding tube part 24; Terminal bracket 3; Bayonet 31; Water tank inlet connector 4; Plate 40; Connector protruding tube part 41; Inlet pipe head 42; Water tank outlet connector 5; Annular groove 51; Outlet pipe head 52; Radial screw 6; Axial screw 7; Gun head housing 8. Detailed Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings.

[0032] The water-cooled structure of the charging gun of this utility model, such as Figures 1 to 5 As shown, it includes a charging terminal 1, the lower part of which is a pin portion 10. The pin portion 10 is used for conductive connection to the charging socket on the new energy vehicle, such as... Figure 5 and Figure 10 As shown, a cable connection surface 100 is formed on one side of the charging terminal 1. In practical applications, the bare end of the cable is soldered to the cable connection surface 100, such as... Figures 1 to 5 and Figure 9 As shown, an insulating cooling water tank 2 is provided on the opposite side of the charging terminal 1. The outer wall of the insulating cooling water tank 2 is attached to the charging terminal 1. The opposite-side layout of the cable connection surface 100 and the insulating cooling water tank 2 is beneficial for making full use of the peripheral space of the charging terminal 1 and for placing the insulating cooling water tank 2 close to the pin portion 10. Figures 1 to 5 As shown, the insulated cooling water tank 2 is connected to a water tank inlet connector 4 and a water tank outlet connector 5. A cavity 20 is formed inside the insulated cooling water tank 2, and the water tank inlet connector 4 is connected to the water tank outlet connector 5 through the cavity 20. The insulated cooling water tank 2 can be made of insulating thermally conductive plastic, which is beneficial for the efficient transfer of heat emitted by the charging terminal 1 to the water flow through the insulated cooling water tank 2. For example, refer to the "Insulated Thermally Conductive Plastic" in Chinese Invention Patent Publication No. CN101735612B.

[0033] Connect the water tank inlet connector 4 to the inlet hose and the water tank outlet connector 5 to the outlet hose. Water flows through the water tank inlet connector 4 into the tank cavity 20, and then flows out through the water tank outlet connector 5. During this process, the heat generated by the charging terminal 1 is transferred to the insulating cooling water tank 2, which in turn transfers the heat to the water flowing through the tank cavity 20, thereby helping to cool the charging terminal 1. After that, the water flows through the heat exchanger, which cools the water. The water then returns to the water pump, which pumps the cooled water back to the water tank inlet connector 4, thus forming a cooling water circulation. The above cooling water circulation process can be referred to "A High-Power Charging Gun Cooling System" in Chinese Invention Patent Application Publication No. CN116901752A.

[0034] Since the water flow is insulated and separated from the charging terminal 1 by the insulated cooling water tank 2, there will be no leakage. Therefore, the water-cooled structure of the charging gun of this utility model can use water as the cooling medium. Water is easy to obtain and has low cost. It does not require special treatment when it is discarded and discharged, which helps to reduce the cooling cost of the charging gun and also helps to protect the environment.

[0035] Furthermore, such as Figure 5 and Figure 9As shown, a cavity inlet 22 is formed on the side of the cavity 20 that is far away from the cable connection surface 100. The cavity inlet 22 is connected to the water tank inlet connector 4. That is to say, the outer wall of the insulating cooling water tank 2 on the other side corresponding to the cavity inlet 22 is in contact with the charging terminal 1. Therefore, the water flow entering from the cavity inlet 22 is directed towards the part of the insulating cooling water tank 2 that is in contact with the charging terminal 1. In other words, the water flow entering the cavity 20 from the cavity inlet 22 is along the radial direction of the charging pin part 10, which helps the water flow to fully contact the part of the insulating cooling water tank 2 that is in contact with the charging terminal 1, and thus helps the water flow to absorb the heat emitted by the charging terminal 1.

[0036] Furthermore, such as Figure 2 and Figure 9 As shown, the water tank inlet connector 4 is adapted to be plugged into the tank cavity inlet 22, thus facilitating the installation and connection of the water tank inlet connector 4 and the tank cavity inlet 22. A sealing ring is provided between the water tank inlet connector 4 and the tank cavity inlet 22.

[0037] Furthermore, such as Figure 2 and Figure 9 As shown, the water outlet connector 5 of the water tank is integrated with the insulated cooling water tank 2, which helps to reduce the number of parts and simplify the assembly process of the charging gun.

[0038] In some embodiments, such as Figure 5 As shown, a groove 11 is formed on the upper part of the charging terminal 1, and the recessed direction of the groove 11 is along the radial direction of the pin portion 10, such as... Figure 4 As shown, one end of the insulating cooling water tank 2 is fitted into the groove 11, and the other end of the insulating cooling water tank 2 protrudes out of the groove 11. Thus, the groove 11 has three surfaces that abut against and connect to the insulating cooling water tank 2, which helps to increase the contact area between the charging terminal 1 and the insulating cooling water tank 2, and helps to improve the heat transfer efficiency. Moreover, the groove 11 has a good positioning effect on the insulating cooling water tank 2.

[0039] Furthermore, such as Figure 5 As shown, the groove 11 has an upper sidewall 111, and one end of the upper sidewall 111 has a slot 1111, as shown. Figure 6 As shown, the water tank outlet connector 5 has an annular groove 51 formed on its outer side, such as... Figure 4 As shown, the slot 1111 is adapted to the snap ring groove 51, so the slot 1111 is an arc-shaped slot, that is to say, the edge of the slot 1111 is located inside the ring groove 51, thereby the slot 1111 positions the water tank outlet connector 5, and the lower end of the ring groove 51 is connected to the insulated cooling water tank 2 as one unit.

[0040] Furthermore, such as Figure 5As shown, the lower end of the insulated cooling water tank 2 has a lower lug 21, which is fixedly connected to the charging terminal 1 by a radial screw 6. That is, the radial screw 6 extends along the radial direction of the pin portion 10 and passes through the lower lug 21. A mounting screw hole 102 is formed on one side of the charging terminal 1. Figure 2 As shown, the radial screw 6 is screwed into the mounting screw hole 102. Figure 2 From the visual direction, the left outer wall of the insulated cooling water tank 2 is currently against the bottom surface of the groove 11. For example... Figure 2 and Figure 5 As shown, the upper side wall 111 of the groove is fixedly connected to the insulating cooling water tank 2 by an axial screw 7. That is, the axial screw 7 extends along the axis parallel to the pin portion 10, passes through the upper side wall 111 of the groove and is screwed to the insulating cooling water tank 2, thereby firmly fixing the insulating cooling water tank 2 to the charging terminal 1.

[0041] like Figure 5 and Figure 7 As shown, the water tank inlet connector 4 has a plate 40, and a connector protrusion 41 is formed on one side of the plate 40, such as... Figure 2 As shown, the protruding part 41 of the connector is inserted into the inlet 22 of the tank cavity. In this embodiment, the inlet 22 of the tank cavity is equivalent to a female connector, and the water inlet connector 4 of the water tank is a male connector, thereby realizing the insertion of the inlet 22 of the tank cavity and the water inlet connector 4 of the water tank. Figure 7 As shown, the water tank inlet connector 4 has an inlet pipe head 42, and the end of the aforementioned inlet hose is sleeved on the inlet pipe head 42, as shown. Figure 6 As shown, the upper end of the water tank outlet connector 5 forms an outlet pipe head 52, and the end of the aforementioned outlet hose is sleeved on the outlet pipe head 52. Both the inlet pipe head 42 and the outlet pipe head 52 are parallel to the pin portion 10. Figure 4 As shown, a snap-fit ​​neck 101 is formed at the midpoint of the charging terminal 1 in the vertical direction (i.e., axial direction), and a snap-fit ​​slot 31 is formed on the terminal support 3, as shown. Figure 3 As shown, the bayonet 31 is adapted to connect to the neck 101, as follows: Figure 1 and Figure 2 As shown, the terminal bracket 3 is installed inside the gun head housing 8. The upper part of the gun head housing 8 needs to be inserted into one end of the charging gun handle housing. In order to facilitate the introduction of the above-mentioned water inlet hose and water outlet hose into the handle housing and then out from the corresponding other end of the handle housing, the water inlet pipe head 42 and the water outlet pipe head 52 are arranged to extend in the vertical direction.

[0042] In some embodiments, such as Figure 12 As shown, a terminal cavity 13 is formed in the upper part of the charging terminal 1, such as... Figure 9As shown, the insulating cooling water tank 2 is adapted to be disposed within the inner cavity 13 of the terminal. In other words, the insulating cooling water tank 2 is built-in and disposed on the upper part of the charging terminal 1, so that the charging terminal 1 surrounds and contacts the outer wall of the insulating cooling water tank 2, which is conducive to the heat of the charging terminal 1 being transferred to the insulating cooling water tank 2 in a circumferential manner, and is conducive to improving the heat exchange efficiency.

[0043] Furthermore, such as Figure 13 As shown, a water tank protrusion 24 is formed on one side of the lower end of the insulated cooling water tank 2, such as... Figure 9 and Figure 11 As shown, the protruding part 24 of the water tank extends out of the charging terminal 1 and is inserted into the water tank inlet connector 4. That is, the protruding part 24 of the water tank is integrally connected to the tank cavity inlet 22. In this embodiment, the tank cavity inlet 22 is equivalent to a male connector, and the water tank inlet connector 4 is a female connector structure, thereby realizing the insertion of the tank cavity inlet 22 and the water tank inlet connector 4. Figure 12 As shown, an inner cavity inlet 131 is formed on the upper part of the charging terminal 1, and an inner cavity outlet 132 is formed on the upper end face of the charging terminal 1. The inner cavity inlet 131 connects to the inner cavity outlet 132 through the terminal inner cavity 13. The terminal inner cavity 13 is a cylindrical inner cavity. Therefore, during processing, the inner cavity inlet 131 can be formed by axial feed of the drill bit, which can conveniently form the terminal inner cavity 13 at the same time. In this embodiment, the insulating cooling water tank 2 is cylindrical in shape, as shown in the figure. Figure 9 As shown, the convex tube 24 of the water tank extends through the inner cavity inlet 131 to the outside of the charging terminal 1, and the water tank outlet connector 5 is integrally connected to the insulated cooling water tank 2 through the inner cavity outlet 132.

[0044] Furthermore, such as Figure 13 and Figure 14 As shown, the protruding part 24 of the water tank is integrally connected to the mounting block 23, such as... Figure 10 As shown, the water tank inlet connector 4 has a plate 40, which is fixedly connected to the mounting block 23 by corresponding screws, thus fixing the water tank inlet connector 4. Figure 14 As shown, the mounting block 23 has an inner arc surface 2301, as... Figure 10 As shown, the inner arc surface 2301 is adapted to abut against and connect to the charging terminal 1, and the charging terminal 1 is radially positioned by the mounting block 23.

[0045] like Figure 3 and Figure 8 As shown, the charging gun has two charging terminals 1, and the two charging terminals 1 are independently connected to the corresponding insulating cooling water tanks 2.

Claims

1. A water-cooled structure for a charging gun, comprising a charging terminal (1), characterized in that: A cable connection surface (100) is formed on one side of the charging terminal (1), and an insulating cooling water tank (2) is provided on the other side corresponding to the charging terminal (1). The outer wall of the insulating cooling water tank (2) is attached to the charging terminal (1). The insulating cooling water tank (2) is connected to a water tank inlet connector (4) and a water tank outlet connector (5). A box cavity (20) is formed inside the insulating cooling water tank (2). The water tank inlet connector (4) is connected to the water tank outlet connector (5) through the box cavity (20).

2. The water-cooled structure for the charging gun according to claim 1, characterized in that: The cavity (20) has a cavity inlet (22) on the side that is relatively far away from the cable connection surface (100), and the cavity inlet (22) is connected to the water tank inlet connector (4).

3. The water-cooled structure for the charging gun according to claim 2, characterized in that: The water tank inlet connector (4) is adapted to be plugged into the tank cavity inlet (22).

4. The water-cooled structure for the charging gun according to claim 2, characterized in that: The water tank outlet connector (5) is integrated with the insulated cooling water tank (2).

5. The water-cooled structure for the charging gun according to any one of claims 1 to 4, characterized in that: A groove (11) is formed on the upper part of the charging terminal (1), one end of the insulating cooling water tank (2) is adapted to be disposed in the groove (11), and the other end of the insulating cooling water tank (2) protrudes out of the groove (11).

6. The water-cooled structure for the charging gun according to claim 5, characterized in that: The groove (11) is correspondingly formed with an upper sidewall (111), and a slot (1111) is formed at one end of the upper sidewall (111). An annular groove (51) is formed on the outside of the water tank outlet connector (5), and the slot (1111) is adapted to engage with the annular groove (51).

7. The water-cooled structure for the charging gun according to claim 6, characterized in that: The lower end of the insulating cooling water tank (2) has a lower lug (21), which is fixedly connected to the charging terminal (1) by a radial screw (6), and the upper side wall of the groove (111) is fixedly connected to the insulating cooling water tank (2) by an axial screw (7).

8. The water-cooled structure for the charging gun according to any one of claims 1 to 4, characterized in that: The upper part of the charging terminal (1) has a terminal cavity (13), and the insulating cooling water tank (2) is adapted to be disposed within the terminal cavity (13).

9. The water-cooled structure for the charging gun according to claim 8, characterized in that: The lower end of the insulating cooling water tank (2) has a water tank protrusion tube (24) which extends out of the charging terminal (1) and is inserted into the water tank inlet connector (4).

10. The water-cooled structure for the charging gun according to claim 9, characterized in that: The protruding part (24) of the water tank is integrally connected to the mounting block (23), and the water inlet connector (4) of the water tank is formed into a plate (40), which is fixedly connected to the mounting block (23).

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