Charging gun and charging equipment

Abstract

The embodiment of the invention discloses a charging gun and charging equipment. The charging gun comprises a power terminal, a support, a cold plate and an insulation heat conduction pad. The power terminal penetrates through the bracket, the bracket is provided with a groove part, and the power terminal comprises a main body section positioned in the groove part; the cold plate is a blowing type liquid cooling plate, is arranged on the groove opening side of the groove part, and is fixedly connected with the bracket; the insulating heat-conducting pad wraps at least part of the main body section; at least part of the insulating heat-conducting pad is located between the cold plate and the main body section, and the insulating heat-conducting pad is attached to the cold plate and the main body section; the cold plate and the power terminal are insulated and isolated through the insulating heat-conducting pad. The charging gun is convenient to assemble and low in cost.

Description

Technical Field

[0001] This application relates to the technical field of charging devices, and particularly to a charging gun and a charging device. Background Art

[0002] An electric vehicle can be charged through a charging device. The charging device includes a charging pile and a charging gun. The charging gun is a connecting device for realizing the transmission of electric energy from the charging pile to the energy storage of the electric vehicle. With the increase in the battery capacity of electric vehicles, improving the charging efficiency to shorten the charging time is a way to solve charging anxiety.

[0003] The increase in charging power will increase the heat dissipation of the power terminals of the charging gun, thereby affecting the performance of the charging gun. Therefore, the heat dissipation efficiency of the power terminals restricts the improvement of charging power. Using a liquid cooling method to dissipate heat from the power terminals is a way to improve the heat dissipation efficiency of the power terminals. In the related art, the charging gun is provided with a liquid cooling component. The structure of the liquid cooling component is relatively complex, the cost is relatively high, and the assembly of the liquid cooling component and the charging power terminals is also relatively complex. Summary of the Invention

[0004] The embodiments of this application provide a charging gun and a charging device. The charging gun is relatively convenient to assemble and can reduce the cost of the charging gun.

[0005] In the first aspect of the embodiments of this application, a charging gun is provided. The charging gun includes a power terminal, a bracket, a cold plate, and an insulating heat-conducting pad; the power terminal passes through the bracket, the bracket has a groove portion, and the power terminal includes a main body section located in the groove portion; the cold plate is an extruded liquid cooling plate, the cold plate is arranged on the groove opening side of the groove portion, and the cold plate is fixedly connected to the bracket; the insulating heat-conducting pad wraps at least part of the main body section; at least part of the insulating heat-conducting pad is located between the cold plate and the main body section, the insulating heat-conducting pad is attached to the cold plate and attached to the main body section; the cold plate and the power terminal are insulated from each other through the insulating heat-conducting pad.

[0006] With the above solution, the power terminal and the cold plate are isolated through the insulating heat-conducting pad, and the relative positions of the power terminal, the insulating heat-conducting pad, and the cold plate are fixed by the fixation of the cold plate to the bracket, which can simplify the assembly process. At the same time, the cold plate is an extruded liquid cooling plate with a mature process, which is beneficial to reducing costs.

[0007] In some possible implementation solutions, the cold plate includes two base plates, the two base plates are fixedly connected, and a flow channel portion is formed between the two base plates by blow molding. The flow channel portion has a liquid inlet interface and a liquid return interface.

[0008] In practical applications, the liquid inlet interface and the liquid return interface are located on the same side of the cold plate. This is convenient for pipeline connection and pipeline layout.

[0009] In some possible embodiments, the flow channel portion includes a number of interconnected sub-flow channel segments, and the sub-flow channel segments include a linear shape, a curved shape, or a polygonal shape. The structure of the flow channel portion is relatively flexible, which is conducive to improving the heat dissipation effect between the power terminal and the power terminal.

[0010] In some possible embodiments, the substrate is an aluminum plate. Using an aluminum plate as the substrate can significantly reduce the material cost of the cold plate. At the same time, the aluminum plate is easy to form a flow channel portion with uniform wall thickness and stable structure during the blowing process.

[0011] In some possible embodiments, the two substrates are fixedly connected by cold rolling. By using the cold rolling method, the sealing effect between the two substrates is good and the connection is reliable.

[0012] In some possible embodiments, the cold plate and the bracket are fixedly connected by fasteners passing through both of them. In this way, the assembly is convenient and easy to implement, and the reliability is relatively high.

[0013] In some possible embodiments, one of the cold plate and the bracket is provided with positioning posts, and the other of the cold plate and the bracket is provided with positioning holes, and the positioning posts are inserted and matched with the positioning holes. In this way, the cold plate and the bracket can be pre-positioned to avoid the position deviation of the cold plate and the bracket during the fixed connection process, and the reliability of the assembly of the cold plate and the bracket can be improved.

[0014] In some possible embodiments, the groove portion includes a groove bottom wall and two opposite groove side walls, and the main body segment includes a top wall surface facing away from the groove bottom wall and two opposite side wall surfaces; the insulating and heat-conducting pad includes a first pad portion and two second pad portions, and the two second pad portions are respectively connected to both sides of the first pad portion. The first pad portion is located between the cold plate and the top wall surface, and the first pad portion is pressed against the top wall surface by the cold plate. The two second pad portions are respectively attached to the two side wall surfaces, and the second pad portion is located between the groove side wall and the side wall surface on the same side; at least part of the wall surface of the main body segment is attached to the groove bottom wall. In this way, the insulating and heat-conducting pad covers a large area of the main body segment, which is conducive to ensuring the insulation effect of the power terminal. The two groove side walls of the groove portion of the bracket are used to positionally constrain the insulating and heat-conducting pad, and the assembly reliability is relatively high; in addition, at least part of the wall surface of the main body segment is attached to the groove bottom wall of the groove portion, which is conducive to ensuring the position accuracy of the power terminal in the charging gun.

[0015] In some possible embodiments, a convex rib protruding towards the groove bottom wall is provided on the side of the main body segment facing the groove bottom wall. The side of the main body segment facing the groove bottom wall includes two bottom wall surface portions, and the two bottom wall surface portions are respectively located on both sides of the convex rib. The bottom wall surface portion is farther away from the groove bottom wall than the rib bottom surface portion of the convex rib; the insulating and heat-conducting pad further includes two third pad portions, and the two third pad portions are respectively connected to the two second pad portions. The third pad portion is located between the bottom wall surface portion and the groove bottom wall; the rib bottom surface portion is attached to the groove bottom wall. In this way, by providing the convex rib, the creepage distance of the power terminal can be increased to ensure electrical safety.

[0016] In some possible embodiments, the charging gun includes a plurality of power terminals, each power terminal is correspondingly provided with a cold plate and an insulating heat-conducting pad, and the flow channels of the plurality of cold plates are arranged in parallel. In this way, the temperature balance at each power terminal can be ensured, which is beneficial to improving the charging power of the charging gun.

[0017] In the second aspect of the embodiments of the present application, a charging device is provided. The charging device includes a charging pile and the charging gun in any of the above embodiments. The charging pile includes a liquid supply component. The cold plate of the charging gun is connected with a liquid inlet pipeline and a liquid return pipeline. The liquid inlet pipeline is connected with the liquid outlet end of the liquid supply component, and the liquid return pipeline is connected with the liquid return end of the liquid supply component. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of a charging device provided by the embodiments of the present application;

[0019] Figure 2 It is a schematic diagram of a charging gun provided by the embodiments of the present application;

[0020] Figure 3 is Figure 2 an exploded view of the charging gun shown in;

[0021] Figure 4 is Figure 2 a schematic diagram of one perspective of the partial structure of the gun head of the charging gun shown in;

[0022] Figure 5 is Figure 4 a schematic diagram of another perspective of the partial structure of the gun head shown in;

[0023] Figure 6 It is a schematic diagram of the first cold plate provided by the embodiments of the present application;

[0024] Figure 7 is Figure 6 a sectional view taken along the line A-A in;

[0025] Figure 8 It is a schematic diagram of a bracket provided by the embodiments of the present application;

[0026] Figure 9 It is a schematic diagram of one perspective of a power terminal provided by the embodiments of the present application;

[0027] Figure 10 is Figure 9 a schematic diagram of another perspective of the power terminal shown in;

[0028] Figure 11 It is a schematic diagram of the assembly of a power terminal and an insulating heat-conducting pad provided by the embodiments of the present application;

[0029] Figure 12 For Figure 11 Schematic diagram of another perspective of the power terminal and the insulating and heat-conducting pad shown;

[0030] Figure 13 Schematic diagram of the assembly of a power terminal and a power line provided by an embodiment of the present application;

[0031] Figure 14 Schematic diagram of the second cold plate provided by an embodiment of the present application;

[0032] Figure 15 Schematic diagram of the third cold plate provided by an embodiment of the present application. Detailed implementation manners

[0033] The charging gun of the charging device can be connected to the vehicle side to realize power supply and communication between the vehicle side and the charging pile. Please refer to Figure 1 , Figure 1 Schematic diagram of a charging device provided by an embodiment of the present application.

[0034] As Figure 1 shown, an embodiment of the present application provides a charging device, which can be used to charge an electric vehicle. The charging device includes a charging gun 1 and a charging pile 2. The charging gun 1 includes a gun head 11 and a cable assembly 12. The gun head 11 is connected to the charging pile 2 through the cable assembly 12, and the plug end of the gun head 11 is adapted to the electric vehicle side. After the gun head 11 of the charging gun 1 is connected to the electric vehicle, the charging pile 2 can charge the electric vehicle through the charging gun 1.

[0035] The charging pile 2 includes a power supply component 21. The power supply component 21 can be electrically connected to the commercial power through a charging host, and the charging host can convert the current provided by the commercial power into the current required for charging the electric vehicle.

[0036] Please refer to 2 and Figure 3 , Figure 2 Schematic diagram of a charging gun provided by an embodiment of the present application, Figure 3 For Figure 2 exploded view of the charging gun shown in. In the figure, the x direction is the first direction, the y direction is the second direction, the z direction is the third direction, the first direction is perpendicular to the second direction, the first direction is perpendicular to the third direction, and the second direction is perpendicular to the third direction.

[0037] In other possible implementation solutions, the first direction and the second direction can be set at other angles, the first direction and the third direction can be set at other angles, and the second direction and the third direction can be set at other angles.

[0038] As Figure 2 and Figure 3 shown, and in combination withFigure 1 In an embodiment of the present application, a charging gun 1 is further provided. The charging gun 1 includes a power terminal 300, and the power terminal 300 is built into the gun head 11. The power terminal 300 can be regarded as a component of the gun head 11. The power terminal 300 extends in a first direction. The cable assembly 12 of the charging gun 1 includes a power line 600. One end of the power line 600 is electrically connected to the power terminal 300, and the other end of the power line 600 is electrically connected to the power supply component 21 of the charging pile 2. The power terminal 300 is electrically connected to the power supply component 21 through the power line 600. After the gun head 11 is connected to the electric vehicle side, the power terminal 300 is electrically connected to the charging socket on the vehicle side to achieve charging of the electric vehicle.

[0039] The line assembly 12 may be provided with two power lines 600. The two power lines 600 may be a positive power line (DC+ power line) and a negative power line (DC- power line) for DC charging. The positive power line and the negative power line are respectively connected to the positive and negative poles of the DC power supply of the charging pile 2, and are used to transmit direct current to the power battery on the electric vehicle side to achieve charging. Each power line 600 may have one power cable or multiple power cables.

[0040] In some examples, the power line 600 may be fixedly connected to the power terminal 300, for example, by welding.

[0041] In other possible implementation solutions, the cable assembly 12 of the charging gun 1 may further include a ground wire and several signal lines.

[0042] The charging gun 1 may include multiple power terminals 300. The multiple power terminals 300 may be arranged in parallel to save space.

[0043] In Figure 2 and Figure 3 In the example shown, the multiple power terminals 300 include a first power terminal 300a and a second power terminal 300b. The first power terminal 300a and the second power terminal 300b may be arranged in a row along the second direction y. The number of power lines 600 of the charging gun 1 may match the number of power terminals 300, and each power terminal 300 is electrically connected to one power line 600. The first power terminal 300a is electrically connected to the power supply component 21 of the charging pile 2 through the first power line 600a, and the second power terminal 300b is electrically connected to the power supply component 21 of the charging pile 2 through the second power line 600b.

[0044] In an embodiment of the present application, the gun head 11 of the charging gun 1 includes a housing base 100, and the power terminal 300 may be installed in the housing base 100. The housing base 100 may be used to connect to the electric vehicle side. The housing base 100 can protect the power terminal 300 built therein and other possible components (such as signal terminals or circuit boards, etc.).

[0045] In the embodiments of the present application, the gun head 11 of the charging gun 1 includes a bracket 200, and the power terminal 300 can be installed on the bracket 200, and the bracket 200 is connected to the housing base 100. The power terminal 300 is connected to the housing base 100 through the bracket 200, which is convenient for assembly and also facilitates the maintenance of the power terminal 300.

[0046] The bracket 200 has a groove portion 210, and the groove portion 210 is provided on one side of the bracket 200 in the third direction. The power terminal 300 is inserted into the groove portion 210, and the groove portion 210 penetrates in the first direction, that is, both ends of the groove portion 210 in the first direction are open structures. In this way, one end of the power terminal 300 in the first direction can extend out of the groove portion 210 to be connected to the electric vehicle side, and the other end of the power terminal 300 in the first direction can be conveniently connected to the power line 600.

[0047] In an implementation solution where the charging gun 1 includes multiple power terminals 300, the bracket 200 can have multiple groove portions 210 that match the number of power terminals 300, and the multiple power terminals 300 are in one-to-one correspondence with the multiple groove portions 210.

[0048] In Figure 2 and Figure 3 In the example shown, the bracket 200 has a first groove portion 210a and a second groove portion 210b. The first power terminal 300a is inserted into the first groove portion 210a, and the second power terminal 300b is inserted into the second groove portion 210b. The first groove portion 210a and the second groove portion 210b are arranged side by side in the second direction.

[0049] In other possible implementation solutions, when the charging gun 1 is provided with multiple power terminals 300, multiple brackets 200 with a matching number can also be provided. Each bracket 200 is provided with a groove portion 210 and is matched with one power terminal 300. The multiple brackets 200 can be connected to each other or each can be connected to the housing base 100.

[0050] There can be various connection methods between the bracket 200 and the housing base 100. For example, the bracket 200 can be detachably connected to the housing base 100 through fasteners such as bolts. For another example, the bracket 200 can be fixedly connected to the housing base 100 by welding. For another example, the bracket 200 and the housing base 100 can be clamped and fixed through a clamping structure.

[0051] In an implementation solution where multiple brackets 200 are provided, the multiple brackets 200 can be connected to each other and then connected to the housing base 100. The connection method between the bracket 200 and the bracket 200 can adopt a connection method of using fasteners, a connection method of welding, or a clamping method.

[0052] In the embodiments of the present application, the gun head 11 of the charging gun 1 includes a cold plate 400, and the cold plate 400 is used for liquid cooling and heat dissipation of the power terminal 300. During the charging process of the charging device, heat is generated at the power terminal 300 of the charging gun 1, and heat dissipation of the power terminal 300 through the cold plate 400 is beneficial to supporting the improvement of the charging power.

[0053] The charging pile 2 further includes a liquid supply component 22. The cable assembly 12 of the charging gun 1 includes a liquid inlet pipeline 710 and a liquid return pipeline 720. The liquid outlet end of the liquid supply component 22 is connected to the inlet end of the cold plate 400 through the liquid inlet pipeline 710, and the outlet end of the cold plate 400 is connected to the liquid return end of the liquid supply component 22 through the liquid return pipeline 720. In this way, the liquid cooling working medium of the liquid supply component 22 can flow into the cold plate 400 through the liquid inlet pipeline 710, and heat exchange with the power terminal 300 is realized during the process of flowing through the cold plate 400. The liquid cooling working medium after heat exchange with the power terminal 300 then flows back to the liquid supply component 22 through the liquid return pipeline 720.

[0054] In some possible implementation solutions, the liquid supply component 22 may include a liquid storage tank, a liquid pump and a radiator to form a working medium source that can provide the liquid cooling working medium. The working medium with a lower temperature in the liquid storage tank can flow towards the cold plate 400 under the action of the liquid pump, and the working medium with a higher temperature flowing back from the cold plate 400 can be cooled by the radiator and then flow into the liquid storage tank. In this way, a liquid cooling circulation loop is formed between the liquid supply component 22 and the cold plate 400.

[0055] In other possible implementation solutions, the liquid supply component 22 may not be provided with a liquid storage tank, and the working medium can directly enter the liquid cooling circulation after being cooled by the radiator, and the heat dissipation requirements of the power terminal 300 are met by reasonably controlling the flow rate and pressure of the working medium.

[0056] The liquid supply component 22 may also adopt other configuration methods, as long as the function requirements of liquid cooling and heat dissipation can be met, and the embodiments of the present application do not make limitations.

[0057] In the implementation solution where the charging gun 1 includes multiple power terminals 300, the charging gun 1 may be provided with a plurality of cold plates 400 that match the number of the power terminals 300, and the plurality of cold plates 400 are in one-to-one correspondence with the plurality of power terminals 300. In this way, each power terminal 300 is cooled by the corresponding cold plate 400, which can improve the heat dissipation efficiency of the power terminal 300 and is beneficial to supporting the improvement of the charging power. In addition, the setting of a plurality of relatively independent cold plates 400 makes the assembly between the cold plate 400 and the corresponding power terminal 300 more flexible or more convenient, and the requirements for the manufacturing accuracy and assembly accuracy of related structural parts are lower, which is beneficial to cost saving.

[0058] In Figure 2 and Figure 3In the illustrated example, a plurality of cold plates 400 include a first cold plate 400a and a second cold plate 400b. The first cold plate 400a cooperates with the first power terminal 300a to dissipate heat from the first power terminal 300a. The second cold plate 400b cooperates with the second power terminal 300b to dissipate heat from the second power terminal 300b.

[0059] In some possible implementation solutions, the plurality of cold plates 400 are arranged in parallel, that is, a liquid cooling working medium circulation loop is formed between each cold plate 400 and the liquid supply component 22 of the charging pile 2. The charging gun 1 includes a plurality of liquid inlet pipelines 710 and a plurality of liquid return pipelines 720 that match the number of cold plates 400. One cold plate 400 is connected to the liquid outlet end of the liquid supply component 22 through the corresponding liquid inlet pipeline 710 and is connected to the liquid return end of the liquid supply component 22 through the corresponding liquid return pipeline 720.

[0060] In this way, arranging the plurality of cold plates 400 in parallel can make the temperatures of the respective power terminals 300 relatively balanced, which is beneficial to reducing the temperature difference between the respective power terminals 300 and is conducive to increasing the charging power. In addition, arranging the plurality of cold plates 400 in parallel can also make the assembly of the respective corresponding liquid inlet pipelines 710 and liquid return pipelines 720 more flexible.

[0061] In Figure 2 and Figure 3 In the illustrated example, the first cold plate 400a is connected to the liquid outlet end of the liquid supply component 22 through the first liquid inlet pipeline 710a and is connected to the liquid return end of the liquid supply component 22 through the first liquid return pipeline 720a. The second cold plate 400b is connected to the liquid outlet end of the liquid supply component 22 through the second liquid inlet pipeline 710b and is connected to the liquid return end of the liquid supply component 22 through the second liquid return pipeline 720b.

[0062] In the embodiment of the present application, the gun head 11 of the charging gun 1 includes an insulating and heat-conducting pad 500. The insulating and heat-conducting pad 500 wraps at least part of the power terminal 300. At least part of the insulating and heat-conducting pad 500 is located between the power terminal 300 and the cold plate 400. The insulating and heat-conducting pad 500 is in contact with the power terminal 300 and is also in contact with the cold plate 400.

[0063] In this way, the heat exchange between the cold plate 400 and the power terminal 300 is achieved through the insulating heat-conducting pad 500. There are fewer restrictions on the material selection of the insulating heat-conducting pad 500, and an insulating heat-conducting pad 500 with good heat conductivity and good fit with the cold plate 400 and the power terminal 300 can be selected to improve the heat exchange efficiency between the cold plate 400 and the power terminal 300 and enhance the heat dissipation efficiency of the power terminal 300. The insulating heat-conducting pad 500 is in surface contact with the power terminal 300 and also in surface contact with the cold plate 400, which is beneficial to relatively quickly transfer the heat generated by the power terminal 300 to the cold plate 400. At the same time, electrical insulation between the cold plate 400 and the power terminal 300 is achieved through the insulating heat-conducting pad 500. Different from the traditional injection molding process for insulation, there are fewer restrictions on the material selection of the insulating heat-conducting pad 500, and an insulating heat-conducting pad 500 with good insulation performance can be selected to enable good insulation performance between the power terminal 300 and the cold plate 400.

[0064] In some possible implementation solutions, the insulating heat-conducting pad 500 can be made of an elastic material. In this way, the fit between the insulating heat-conducting pad 500 and the power terminal 300 or the cold plate 400 can be relatively tight, which is beneficial to heat transfer. In addition, the insulating heat-conducting pad 500 has the ability of compressive deformation, which can reduce the machining requirements for the flatness of the mating surface of the cold plate 400 and also reduce the machining requirements for the flatness of the mating surface of the power terminal 300, which is beneficial to saving machining costs.

[0065] Exemplarily, the insulating heat-conducting pad 500 can be a polyimide film.

[0066] In other possible implementation solutions, the insulating heat-conducting pad 500 can also be a rigid pad, and the rigid pad does not have the ability of compressive deformation. For example, heat-conducting plastic or ceramic.

[0067] In the implementation solution where the charging gun 1 includes multiple power terminals 300, the charging gun 1 can be provided with multiple insulating heat-conducting pads 500 that match the number of the power terminals 300 and the cold plates 400. The multiple insulating heat-conducting pads 500 are in one-to-one correspondence with the multiple power terminals 300 and the multiple cold plates 400, and one insulating heat-conducting pad 500 is provided between each corresponding power terminal 300 and the cold plate 400.

[0068] In Figure 2 and Figure 3 In the illustrated example, insulation and heat transfer are achieved between the first power terminal 300a and the first cold plate 400a through the first insulating heat-conducting pad 500a. Insulation and heat transfer are achieved between the second power terminal 300b and the second cold plate 400b through the second insulating heat-conducting pad 500b.

[0069] Please refer to Figure 4 and Figure 5 together, Figure 4 ForFigure 2 Schematic diagram of a perspective view of a partial structure of the gun head of the charging gun Figure 5 is Figure 4 Schematic diagram of another perspective view of the partial structure of the shown gun head

[0070] In the embodiment of the present application, at least a part of the insulating and heat-conducting pad 500 is located in the groove portion 210 of the bracket 200. The groove portion 210 of the bracket 200 has a groove opening side in the third direction to facilitate the assembly of the power terminal 300 and the insulating and heat-conducting pad 500. The cold plate 400 is provided on the groove opening side of the groove portion 210, and the cold plate 400 is fixedly connected to the bracket 200.

[0071] In this way, the relative positions of the power terminal 300, the insulating and heat-conducting pad 500 and the bracket 200 can be restricted by the connection between the cold plate 400 and the bracket 200. After the cold plate 400 is connected to the bracket 200, the cold plate 400 can press the wrapped insulating and heat-conducting pad 500 against the power terminal 300, and at the same time press the power terminal 300 against the bracket 200. Compared with the injection molding method for fixing, the power terminal 300 and the cold plate 400 are assembled with the housing base 100 of the gun head 11 through the bracket 200, and this assembly method is relatively simple.

[0072] In the embodiment of the present application, the cold plate 400 is a blown liquid cooling plate. The cold plate 400 is formed by the blowing method, and the process is relatively simple, which is beneficial to reducing the cost of the charging gun 1.

[0073] Please refer to Figure 6 and Figure 7 , Figure 6 which is a schematic diagram of the first cold plate provided by the embodiment of the present application, Figure 7 is Figure 6 the sectional view taken along the line A-A in

[0074] The cold plate 400 includes a flow channel portion 430. The flow channel portion 430 has a flow cavity for the liquid cooling working medium to flow. The flow channel portion 430 has a liquid inlet interface and a liquid return interface. The liquid inlet interface is used to connect to the liquid inlet pipeline 710, and the liquid return interface is used to connect to the liquid return pipeline 720.

[0075] In some possible implementation solutions, a liquid inlet pipe joint 730 may be connected to the liquid inlet interface of the cold plate 400, and a liquid return pipe joint 740 may be connected to the liquid return interface of the cold plate 400. In this way, it is convenient to connect the liquid inlet pipeline 710 to the cold plate 400, and it is also convenient to connect the liquid return pipeline 720 to the cold plate 400.

[0076] In application, the liquid inlet pipeline 710 and the liquid return pipeline 720 can adopt flexible pipes or hoses that can be bent, which is convenient for the layout of the pipelines and the adjustment of the relative positions between the gun head 11 and the charging pile 2.

[0077] Exemplarily, both the liquid inlet pipe joint 730 and the liquid return pipe joint 740 can be connected to the cold plate 400 by welding.

[0078] In an application, the liquid inlet interface and the liquid return interface of the cold plate 400 are located on the same side of the cold plate 400 in the first direction, on the side close to the cable assembly 12 of the charging gun 1. In this way, it is convenient for connecting relevant cables and is also beneficial to the compact structure setting of the gun head 11.

[0079] In an implementation solution where the charging gun 1 includes multiple cold plates 400, each cold plate 400 can be connected with a corresponding liquid inlet pipe joint 730 and a liquid return pipe joint 740. Figures 2 to 4 In the shown example, the liquid inlet interface of the first cold plate 400a is connected with a first liquid inlet pipe joint 730a, the liquid return interface of the first cold plate 400a is connected with a first liquid return pipe joint 740a, the liquid inlet interface of the second cold plate 400b is connected with a second liquid inlet pipe joint 730b, and the liquid return interface of the second cold plate 400b is connected with a second liquid return pipe joint 740b.

[0080] In the embodiment of the present application, the cold plate 400 adopts an extruded liquid cooling plate. The cold plate 400 may include two base plates, the two base plates are fixedly connected, and a flow channel part 430 is formed by blow molding between the two base plates.

[0081] As Figure 6 and Figure 7 shown, the two base plates of the cold plate 400 are respectively a first base plate 410 and a second base plate 420. The first base plate 410 and the second base plate 420 are fixedly connected, and blow molding is performed between the first base plate 410 and the second base plate 420 to form the flow channel part 430.

[0082] The blow molding process of the cold plate 400 can be operated as follows:

[0083] Prepare the first base plate 410 and the second base plate 420;

[0084] Print a coating 440 on one side of the first base plate 410 according to the pre-designed flow channel part 430, that is, the area of the coating 440 is adapted to the flow channel part 430. For example, if the flow channel part 430 is in a U shape, the coating 440 is also in a U shape;

[0085] After printing the coating 440, fixedly connect the first base plate 410 and the second base plate 420 to make the first base plate 410 and the second base plate 420 fit and seal. Among them, the side of the first base plate 410 printed with the coating 440 faces the side where the second base plate 420 is located; due to the existence of the coating 440 on one side, the first base plate 410 and the second base plate 420 are hermetically connected in the area where the coating 440 is not printed;

[0086] A blowing operation is performed on the fixedly connected first substrate 410 and second substrate 420. Specifically, high-pressure gas is blown between the first substrate 410 and the second substrate 420. Due to the isolation of the coating 440, the area of the coating 440 on the first substrate 410 bulges and deforms away from the second substrate 420, and a flow channel portion 430 with a flow channel cavity 430a can be formed.

[0087] In other possible operation schemes, the coating 440 can also be printed on the side of the second substrate 420 facing the first substrate 410; alternatively, the coating 440 can be printed on both the first substrate 410 and the second substrate 420.

[0088] In other possible operation schemes, the second substrate 420 can also be deformed away from the first substrate 410.

[0089] Exemplarily, the coating 440 can be made of graphite. The cost is relatively low.

[0090] Exemplarily, the first substrate 410 and the second substrate 420 can be made of aluminum plates. The cost is relatively low.

[0091] Exemplarily, the first substrate 410 and the second substrate 420 can be fixedly connected by cold rolling. The sealing performance is good and the operation is convenient.

[0092] The cold plate 400 can have a plane that fits the insulating heat-conducting pad 500 to increase the contact area between the two and improve the heat dissipation efficiency of the power terminal 300.

[0093] The cold plate 400 adopts a blown liquid-cooled plate, and the structural form of the flow channel portion 430 is not limited and can be flexibly set according to the heat dissipation requirements of the power terminal 300.

[0094] In Figure 6 In the illustrated example, the flow channel portion 430 of the cold plate 400 includes a first sub-flow channel segment 431, a second sub-flow channel segment 432, and a third sub-flow channel segment 433 that are interconnected. Among them, both the first sub-flow channel segment 431 and the third sub-flow channel segment 433 are linear in shape, and the second sub-flow channel segment 432 is curved, specifically in an arc shape. The flow channel portion 430 is generally U-shaped. The first sub-flow channel segment 431 is connected to the third sub-flow channel segment 433 through the second sub-flow channel segment 432. One end of the first sub-flow channel segment 431 away from the second sub-flow channel segment 432 forms a liquid inlet interface and is connected to the liquid inlet pipe joint 730. One end of the third sub-flow channel segment 433 away from the second sub-flow channel segment 432 forms a liquid return interface and is connected to the liquid return pipe joint 740.

[0095] In the embodiment of the present application, the fixed connection between the cold plate 400 and the bracket 200 can be achieved by using fasteners. Please refer to Figure 8 , Figure 8Schematic diagram of a bracket provided by an embodiment of the present application. The cold plate 400 and the bracket 200 can be fixedly connected by fasteners passing through both of them.

[0096] As Figure 8 shown, the bracket 200 can be provided with a first mounting hole 221. As Figure 6 shown, the cold plate 400 can be provided with a second mounting hole 451. As Figure 4 and Figure 5 shown, the fastener 800 can pass through the second mounting hole 451 and the first mounting hole 221 to fixedly connect the cold plate 400 and the bracket 200.

[0097] In some examples, the first mounting hole 221 of the bracket 200 can be a threaded hole, and the fastener 800 can be a bolt or a screw. The fastener 800 passes through the second mounting hole 451 and the first mounting hole 221 in sequence and is threadedly connected to the first mounting hole 221. In this way, the bracket 200 and the cold plate 400 are detachable, which is convenient for maintaining related structures such as the cold plate 400, the insulating thermal pad 500, or the power terminal 300.

[0098] In other examples, the fastener 800 can be selected in the form of a combination of a bolt and a nut. After the fastener 800 passes through the first mounting hole 221 and the second mounting hole 451, it can be fixed by threaded connection with the nut.

[0099] In other examples, the second mounting hole 451 of the cold plate 400 can also be set in the form of a threaded hole.

[0100] In some possible implementation solutions, the cold plate 400 is provided with second mounting holes 451 on both sides in the second direction, and the bracket 200 is provided with corresponding first mounting holes 221 at the positions of each second mounting hole 451. In this way, the connection positions of the cold plate 400 and the bracket 200 are arranged in the second direction, which not only ensures the connection reliability of the cold plate 400 and the bracket 200, but also does not cause interference or influence on the assembly of structures such as the power terminal 300.

[0101] In some examples, the cold plate 400 can be provided with two mounting lugs 450, and the two mounting lugs 450 are arranged in the second direction. The second mounting hole 451 is arranged on the mounting lug 450.

[0102] In some examples, the bracket 200 can be provided with two mounting plates on both sides of the groove portion 210 along the second direction, and each mounting plate is provided with a first mounting hole 221.

[0103] In the solution where the bracket 200 is provided with a plurality of slots 210, the plurality of slots 210 are arranged in the second direction, and two adjacent slots 210 can be integrated through their mounting plates, that is, two adjacent slots 210 can share a mounting plate, and the shared mounting plate is located between the adjacent sides of the two slots 210 in the second direction.

[0104] As Figure 8 In the example shown, the bracket 200 includes a first slot 210a and a second slot 210b arranged along the second direction. Along the second direction, a first mounting plate 220a and a second mounting plate 220b are respectively provided on both sides of the first slot 210a, and a second mounting plate 220b and a third mounting plate 220c are respectively provided on both sides of the second slot 210b. The first slot 210a and the second slot 210b are connected through the second mounting plate 220b. A first mounting hole 221 is provided on the first mounting plate 220a, which cooperates with a second mounting hole 451 on the same side of the first cold plate 400a. A first mounting hole 221 is provided on the second mounting plate 220b, which cooperates with a second mounting hole 451 on the same side of the first cold plate 400a; another first mounting hole 221 is also provided on the second mounting plate 220b, which cooperates with a second mounting hole 451 on the same side of the second cold plate 400b. A first mounting hole 221 is provided on the third mounting plate 220c, which cooperates with a second mounting hole 451 on the same side of the second cold plate 400b.

[0105] In other possible implementation solutions, more than two second mounting holes 451 can be provided on the mounting lug plate 450 of the cold plate 400, and a matching number of second mounting holes 451 are provided at the corresponding positions of the bracket 200.

[0106] In some possible implementation solutions, positioning holes 452 are provided on the cold plate 400, and positioning posts 222 are provided on the bracket 200. The positioning posts 222 are inserted and matched with the positioning holes 452. In this way, through the cooperation of the positioning holes 452 and the positioning posts 222, the cold plate 400 and the bracket 200 can be pre-positioned, avoiding the position deviation of the cold plate 400 and the bracket 200 during the fixed connection process, and improving the reliability of the assembly of the cold plate 400 and the bracket 200.

[0107] In some examples, positioning holes 452 are provided on both sides of the cold plate 400 in the second direction. Positioning posts 222 are correspondingly provided at the positions of the respective positioning holes 452 on the bracket 200. In this way, the positioning reliability of the cold plate 400 and the bracket 200 can be ensured.

[0108] In application, the positioning holes 452 can be provided on the mounting lug plate 450. The positioning posts 222 can be provided on the mounting plate.

[0109] In other possible implementation solutions, the positioning hole 452 can also be arranged on the bracket 200, and the positioning post 222 can also be arranged on the cold plate 400.

[0110] As Figure 8 shown, the bracket 200 has a first groove portion 210a and a second groove portion 210b. The first groove portion 210a and the second groove portion 210b are arranged side by side in the second direction. Both the first groove portion 210a and the second groove portion 210b have a groove bottom wall 211 and two groove side walls 212. The two groove side walls 212 are opposite to each other in the second direction. The groove opening side of the groove portion 210 is opposite to the groove bottom wall 211 in the third direction.

[0111] Please refer to Figure 9 , Figure 9 which is a schematic diagram of a perspective view of a power terminal provided by an embodiment of the present application. As Figure 9 shown, the power terminal 300 includes a main body section 310, and the main body section 310 extends along the first direction. Combining Figures 2 to 5 , the main body section 310 is located within the groove portion 210 of the bracket 200. The power terminal 300 further includes a first section 320 and a second section 330. The first section 320 and the second section 330 are located on both sides of the main body section 310 in the first direction. Among them, the first section 320 is used to be connected to the electric vehicle side, and the third section 330 can be connected to the power line 600.

[0112] In some examples, after the power terminal 300 passes through the groove portion 210 of the bracket 200, at least a part of the first section 320 can extend out of the bracket 200. Specifically, the first section 320 passes through the opening at one end of the groove portion 210 in the first direction and is located outside the bracket 200.

[0113] In some examples, after the power terminal 300 passes through the groove portion 210 of the bracket 200, a part of the second section 330 can be located within the groove portion 210, and a part can extend out of the bracket 200 through the opening at the other end of the groove portion 210 in the first direction.

[0114] After the power terminal 300 is assembled with the groove portion 210 of the bracket 200, the relative position of the power terminal 300 and the bracket 200 in the first direction is determined to ensure the electrical connection reliability when the gun head 11 is connected to the electric vehicle side.

[0115] In some possible implementation solutions, such as Figure 9As shown, at the joint of the main body section 310 of the power terminal 300 and the first section 320, a protruding structure 315 protruding in the third direction is provided. The protruding structure 315 is provided on the side of the main body section 310 facing away from the bottom wall 211 of the groove in the third direction. The first section 320 of the power terminal 300 includes a plug-in section 321 and an annular protruding portion 322. In the first direction, the plug-in section 321 is located between the annular protruding portion 322 and the protruding structure 315. As Figure 8 shown, on the side of the groove portion 210 of the bracket 200 close to the first section 320 in the first direction, an end plate 230 is provided. The end plate 230 has a slot 231, and the slot 231 communicates with the groove portion 210. The slot 231 is adapted to the plug-in section 321 of the power terminal 300. Combining Figure 4 , after the power terminal 300 and the bracket 200 are assembled, the plug-in section 321 of the first section 320 of the power terminal 300 is located in the slot 231 of the end plate 230, the protruding structure 315 of the main body section 310 abuts against the end plate 230, and the annular protruding portion 322 of the first section 320 abuts against the end plate 230. In other words, the two opposite surface portions of the end plate 230 in the first direction respectively abut against the annular protruding portion 322 and the protruding structure 315. In this way, the relative positions of the power terminal 300 and the bracket 200 in the first direction can be restricted.

[0116] In other possible implementation solutions, the relative positions of the power terminal 300 and the bracket 200 in the first direction can also be defined by other structural forms. For example, at the joint of the main body section 310 and the first section 320 of the bracket 200, a clamping rib extending in the direction towards the bottom wall 211 of the groove can be provided, and at the corresponding position on the bottom wall 211 of the groove of the bracket 200, a clamping groove is provided. When the power terminal 300 is inserted through the groove portion 210, the clamping rib can be clamped in the clamping groove.

[0117] Please also refer to Figures 10 to 12 , Figure 10 For Figure 9 a schematic diagram of another perspective of the power terminal shown, Figure 11 a schematic diagram of the assembly of a power terminal and an insulating and heat-conducting pad provided by an embodiment of the present application, Figure 12 For Figure 11 a schematic diagram of another perspective of the power terminal and the insulating and heat-conducting pad shown.

[0118] In an embodiment of the present application, the insulating and heat-conducting pad 500 includes at least a part of the main body section 310 of the power terminal 300. The main body section 310 includes a top wall surface 311 facing away from the bottom wall 211 of the groove and two opposite side wall surfaces 312. The two side wall surfaces 312 are opposite in the second direction. The top wall surface 311 of the main body section 310 can be understood as the surface of the main body section 310 facing the groove opening side of the groove portion 210 in the third direction.

[0119] The insulating thermal pad 500 includes a first pad portion 510 and two second pad portions 520, and the two second pad portions 520 are respectively connected to both sides of the first pad portion 510. The first pad portion 510 is located between the cold plate 400 and the top wall surface 311 of the main body section 310. After assembly, the first pad portion 510 is pressed against the top wall surface 311 by the cold plate 400. The two second pad portions 520 are respectively fitted with the two side wall surfaces 312 of the main body section 310, and the second pad portions 520 are located between the groove side wall 212 and the side wall surface 312 on the same side. In other words, the two second pad portions 520 of the insulating thermal pad 500 are arranged in the second direction. The first pad portion 510 of the insulating thermal pad 500 covers the top wall surface 311 of the main body section 310, and the two second pad portions 520 respectively cover the two side wall surfaces 312 of the main body section 310.

[0120] Thus, the two groove sidewalls 212 of the groove portion 210 of the bracket 200 can constrain the position of the insulating thermal pad 500 in the second direction. The insulating thermal pad 500 covers a larger area of ​​the main section 310, which is conducive to ensuring the insulation effect between the power terminal 300 and other components.

[0121] In the embodiment of the present application, at least part of the wall surface of the main body section 310 of the power terminal 300 is in contact with the bottom wall 211 of the groove portion 210. It can be understood that at least part of the wall surface in contact with the bottom wall 211 of the groove is located on the side of the main body section 310 that is away from the groove opening side in the third direction. In this way, the contact between the power terminal 300 and the bottom wall 211 of the groove of the bracket 200 is a hard contact, which can ensure the relative position of the power terminal and the bracket 200 in the third direction, which is conducive to ensuring the position accuracy of the power terminal 300 in the gun head 11.

[0122] In some possible implementations, a ridge 313 extending toward the groove bottom wall 211 is provided on one side of the main section 310 of the power terminal 300 facing the groove bottom wall 211, and the main section 310 on one side facing the groove bottom wall 211 includes two bottom wall face portions 314, the two bottom wall face portions 314 are respectively located on both sides of the ridge 313, and the bottom wall face portions 314 are away from the groove bottom wall 211 relative to the ridge bottom face portion 3131 of the ridge 313. The ridge bottom face portion 3131 of the ridge 313 is the wall surface of the ridge 313 facing the groove bottom wall 211 in the third direction. The insulating thermal pad 500 also includes two third pad portions 530, the two third pad portions 530 are respectively connected to the two second pad portions 520, and the third pad portion 530 is located between the bottom wall face portion 314 of the main section 310 and the groove bottom wall 211.

[0123] The first pad portion 510 and the third pad portion 530 of the insulating heat-conducting pad 500 are arranged in the third direction. After the cold plate 400 is connected to the bracket 200, under the pressing action of the cold plate 400, the first pad portion 510 of the insulating heat-conducting pad 500 abuts against the top wall surface 311 of the main body section 310, and the second pad portion 520 abuts against the bottom wall 211 of the groove, which can limit the position of the insulating heat-conducting pad 500 in the third direction. Combining with the position-limiting effect of the groove portion 210 on the insulating heat-conducting pad 500 in the second direction, the displacement of the insulating heat-conducting pad 500 can be avoided, which is beneficial to ensuring the heat transfer effect and insulating effect between the power terminal 300 and the cold plate 400.

[0124] The bottom surface 3131 of the convex rib 313 fits with the bottom wall 211 of the groove. The convex rib 313 can, on the one hand, ensure the position limitation of the power terminal 300 in the third direction, and on the other hand, increase the size of the main body section 310 in the third direction, which is beneficial to increasing the creepage distance of the power terminal 300 to meet the relevant regulations.

[0125] In other possible implementation solutions, the insulating heat-conducting pad 500 can completely cover the main body section 310 in the circumferential direction of the main body section 310.

[0126] Please refer to Figure 13 , Figure 13 which is an assembly schematic diagram of a power terminal and a power line provided by an embodiment of the present application.

[0127] In some possible implementation solutions, one end of the power line 600 is connected to the second section 330 of the power terminal 300. The size of the second section 330 in the third direction is smaller than the size of the main body section 310 in the third direction. In the third direction, on the side close to the bottom wall 211 of the bracket 200, a stepped structure is formed between the second section 330 and the main body section 310. One end of the power line 600 can be located on the side of the second section 330 close to the bottom wall 211 in the third direction, and the power line 600 can abut against the main body section 310 to limit the position of the power line 600.

[0128] In some possible implementation solutions, the gun head 11 of the charging gun 1 may include an insulating protective sleeve (not shown in the figure), and the insulating protective sleeve can cover the second section 330 and one end of the power line 600 connected to the second section 330. In this way, electrical insulation at the connection position between the second section 330 and the power line 600 can be achieved.

[0129] In some possible implementation solutions, combining Figure 4 and Figure 11, one end of the insulating and heat-conducting pad 500 in the first direction can extend to the protruding structure 315 and abut against the protruding structure 315. In this way, on the one hand, the contact area between the insulating and heat-conducting pad 500 and the power terminal 300 can be increased, which is beneficial to heat conduction. On the other hand, the position of the insulating and heat-conducting pad 500 in the first direction can be restricted.

[0130] In some possible implementation solutions, the other end of the insulating and heat-conducting pad 500 in the first direction can extend to the area where the second section 330 is located. When the insulating protective sleeve is provided, the insulating and heat-conducting pad 500 and the insulating protective sleeve have an overlapping area in the first direction. In this way, the partial exposure of the power terminal 300 will not be caused due to the gap between the insulating and heat-conducting pad 500 and the insulating protective sleeve in the first direction, and good electrical insulation performance of the power terminal 300 can be ensured.

[0131] In the embodiment of the present application, the cold plate 400 is a blown liquid cooling plate, and the structural form of its flow channel part 430 can be designed in a flexible and diverse manner. In addition to the Figure 6 example shown above, there can also be other structural forms.

[0132] For example Figure 14 as shown Figure 14 FIG. shows a schematic diagram of the second cold plate provided by the embodiment of the present application. In this implementation solution, the flow channel 430 of the cold plate 400 includes a first sub-flow channel part 4301, a second sub-flow channel part 4302, a third sub-flow channel part 4303, and a fourth sub-flow channel part 4304. The first sub-flow channel part 4301 includes a sub-flow channel segment, which is in a straight line shape. Both the second sub-flow channel part 4302 and the third sub-flow channel part 4303 include a number of successively connected sub-flow channel segments, among which some sub-flow channel segments are in a straight line shape and some sub-flow channel segments are in a curved shape (such as an arc shape). The fourth sub-flow channel part 4304 includes a sub-flow channel segment, which is in a straight line shape. The second sub-flow channel part 4302 and the third sub-flow channel part 4303 are connected in parallel between the first sub-flow channel part 4301 and the fourth sub-flow channel part 4304. One end of the first sub-flow channel part 4301 forms a liquid inlet interface for connecting with the liquid inlet pipe joint 730. The other end of the first sub-flow channel part 4301 is connected to one end of the second sub-flow channel part 4302 and one end of the third sub-flow channel part 4303. The other ends of the second sub-flow channel part 4302 and the third sub-flow channel part 4303 are both connected to one end of the fourth sub-flow channel part 4304. The other end of the fourth sub-flow channel part 4304 forms a liquid return interface for connecting with the liquid return pipe joint 740. Both the second sub-flow channel part 4302 and the third sub-flow channel part 4303 are generally in a U shape.

[0133] For another example Figure 15 as shown Figure 15A schematic diagram of a third cold plate provided in an embodiment of the present application is shown. In this embodiment, the flow channel 430 of the cold plate 400 includes a first sub-flow channel section 431', a plurality of second sub-flow channel sections 432' and a third sub-flow channel section 433'. The first sub-flow channel section 431' is formed with a liquid inlet interface for connecting to a liquid inlet pipe joint 730. The third sub-flow channel section 433' is formed with a liquid return interface for connecting to a liquid return pipe joint 740. The plurality of second sub-flow channel sections 432' are interconnected, and the plurality of second sub-flow channel sections 432' are connected between the first sub-flow channel section 431' and the third sub-flow channel section 433'. The plurality of second sub-flow channel sections 432' are generally U-shaped in structure, and each second sub-flow channel section 432' is hexagonal in shape.

[0134] In other possible implementations, the second sub-channel segment 432' may also be in other shapes. For example, the second sub-channel segment 432' may be in a square shape, a triangle shape, or a pentagon shape, etc. For another example, the second sub-channel segment 432' may also be in an elliptical shape or a circular shape, etc.

[0135] Figure 15 In the illustrated embodiment, the second sub-channel segments 432' have the same shape. In other possible implementations, at least some of the second sub-channel segments 432' may have different shapes.

[0136] Figure 6 , Figure 14 and Figure 15 The flow channel portion 430 of the cold plate 400 with three different structures is only exemplarily illustrated. In other possible implementations, the flow channel portion 430 may have other deformations, which are not listed one by one.

[0137] The ordinal numbers "first" and "second" etc. used herein are only used to describe the composition or structure of the same function in the technical solution. It is understandable that the use of the ordinal numbers "first" and "second" etc. does not constitute an understanding limitation on the technical solution claimed for protection in this application.

[0138] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A charging gun, characterized in that: include: a bracket, the bracket having a groove portion, A power terminal, the power terminal is passed through the bracket, and the power terminal includes a main body section located in the groove; A cold plate, wherein the cold plate is an inflation type liquid cold plate, the cold plate is arranged at the slot opening side of the slot portion, and the cold plate is fixedly connected to the bracket; and an insulating thermally conductive pad, the insulating thermally conductive pad wrapping at least a portion of the main body segment; at least a portion of the insulating thermally conductive pad is located between the cold plate and the main body segment, the insulating thermally conductive pad is in contact with the cold plate and the main body segment; The cold plate and the power terminal are insulated and isolated by the insulating thermal pad.

2. The charging gun according to claim 1, characterized in that: The cold plate comprises two base plates, the two base plates are fixedly connected, a flow channel portion is formed between the two base plates by inflation molding, and the flow channel portion has a liquid inlet interface and a liquid return interface.

3. The charging gun according to claim 2, characterized in that: The flow channel portion includes a plurality of mutually connected sub-flow channel segments, and the sub-flow channel segments include a straight line shape, a curved shape, or a polygonal shape.

4. The charging gun according to claim 2, characterized in that: The substrate is an aluminum plate; and / or the two substrates are fixedly connected by cold rolling.

5. The charging gun according to any one of claims 1 to 4, characterized in that: The cold plate and the bracket are fixedly connected by fasteners penetrating the two.

6. The charging gun according to claim 5, characterized in that: One of the cold plate and the bracket is provided with a positioning column, and the other of the cold plate and the bracket is provided with a positioning hole, and the positioning column is inserted and matched with the positioning hole.

7. The charging gun according to any one of claims 1 to 4, characterized in that: The groove portion includes a groove bottom wall and two opposite groove side walls, and the main body section includes a top wall surface facing away from the groove bottom wall and two opposite side wall surfaces; The insulating thermal pad includes a first pad portion and two second pad portions, the two second pad portions are respectively connected to two sides of the first pad portion, the first pad portion is located between the cold plate and the top wall surface, the first pad portion is pressed against the top wall surface by the cold plate, the two second pad portions are respectively attached to the two side wall surfaces, and the second pad portions are located between the groove side wall and the side wall surface on the same side; At least a portion of the wall surface of the main body section is in contact with the bottom wall of the groove.

8. The charging gun according to claim 7, characterized in that: A convex ridge extending toward the groove bottom wall is disposed on one side of the main body section facing the groove bottom wall, and the side of the main body section facing the groove bottom wall includes two bottom wall surface portions, the two bottom wall surface portions are respectively located on both sides of the convex ridge, and the bottom wall surface portion is away from the groove bottom wall relative to the ridge bottom surface portion of the convex ridge; The insulating thermal pad also includes two third pads, which are respectively connected to the two second pads, and the third pads are located between the bottom wall surface and the groove bottom wall; The ridge bottom surface portion is in contact with the groove bottom wall.

9. The charging gun according to any one of claims 1 to 4, characterized in that: The charging gun includes a plurality of the power terminals, each of the power terminals is correspondingly provided with the cold plate and the insulating thermal pad, and the flow channel parts of the plurality of the cold plates are arranged in parallel.

10. A charging device, characterized in that It comprises a charging pile and a charging gun as described in any one of claims 1 to 9; the charging pile comprises a liquid supply component, the cold plate of the charging gun is connected with a liquid inlet pipeline and a liquid return pipeline, the liquid inlet pipeline is connected to the liquid outlet end of the liquid supply component, and the liquid return pipeline is connected to the liquid return end of the liquid supply component.

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