Charging gun and charging equipment

Abstract

The embodiment of the invention provides a charging gun and charging equipment, and relates to the technical field of charging equipment. The charging gun comprises a coil holder, a power terminal, a liquid cooling plate and an insulating heat conduction pad. The power terminal extends along a first direction, the power terminal comprises a first section, and the surface of the first section is coated by an insulating heat conduction pad. A power terminal groove is formed in one side of the coil holder in the second direction, the first section and the insulating heat-conducting pad are arranged in the power terminal groove in a penetrating mode, the liquid cooling plate is arranged at an opening of the power terminal groove in the second direction, the liquid cooling plate is fixedly connected with the coil holder, and the insulating heat-conducting pad and the first section are connected to the coil holder in a pressing mode through the liquid cooling plate. The two side surfaces of the first section in the second direction are both in press fit with the insulating heat-conducting pad, and the insulating heat-conducting pad separates the power terminal from the liquid cooling plate. Therefore, the power terminal of the charging gun and the liquid cooling plate can be conveniently assembled, and the heat dissipation and insulation effects are better.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of charging equipment, and in particular to a charging gun and a charging equipment. Background Art

[0002] The charging gun is a connection device that transmits electric energy from the charging pile to the electric vehicle. After the charging gun is connected to the electric vehicle, the charging pile can charge the electric vehicle through the charging gun. With the rapid development of the electric vehicle industry, the battery capacity of electric vehicles is getting larger and larger. Increasing the charging power to shorten the charging time is a way to achieve fast charging. The increase in charging power increases the heat consumption of the charging gun, and the excessive temperature of the charging gun will affect the reliability and other performance of the charging gun. Therefore, the heat dissipation efficiency of the charging gun restricts the increase in charging power.

[0003] Liquid cooling of the charging gun is one direction to improve the heat dissipation efficiency of the charging gun. In the related art, the charging gun may include a power terminal and a liquid cooling plate, which are often fixed by injection molding. In the related art, the assembly of the power terminal and the liquid cooling plate of the charging gun is inconvenient and the heat dissipation and insulation effect is poor. Summary of the invention

[0004] The embodiments of the present application provide a charging gun and a charging device, which can facilitate the assembly of the power terminal of the charging gun and the liquid cooling plate, and have better heat dissipation and insulation effects.

[0005] The first aspect of the embodiment of the present application provides a charging gun, which includes a wire rack, a power terminal, a liquid cooling plate and an insulating thermal pad. The power terminal extends along a first direction, and the power terminal includes a first section, and the surface of the first section is covered by an insulating thermal pad. The wire rack has a power terminal slot on one side in the second direction, and the first section and the insulating thermal pad are both inserted into the power terminal slot. The liquid cooling plate is arranged at the opening of the power terminal slot in the second direction. The liquid cooling plate is fixedly connected to the wire rack, and the liquid cooling plate presses the insulating thermal pad and the first section onto the wire rack. The surfaces on both sides of the first section in the second direction are pressed against the insulating thermal pad, and the insulating thermal pad separates the power terminal from the liquid cooling plate.

[0006] In the charging gun provided in the embodiment of the present application, the power terminal and the liquid cooling plate are assembled and fixed by the wire rack, which reduces the assembly process steps and is convenient for the assembly between the power terminal and the liquid cooling plate. In addition, the surface of the first section is covered with an insulating thermal pad, and the heat exchange surface between the power terminal and the insulating thermal pad is large, which is conducive to the heat on the power terminal to be quickly transferred to the liquid cooling plate through the insulating thermal pad, so that the liquid cooling plate has a higher heat dissipation efficiency for the power terminal. Furthermore, the power terminal and the liquid cooling plate are electrically insulated by the insulating thermal pad located between the two, which can make the power terminal and the liquid cooling plate have better insulation performance. The liquid cooling plate presses the insulating thermal pad and the first section onto the wire rack, and the two side surfaces of the first section in the second direction are pressed with the insulating thermal pad, so that the insulating thermal pad has a high degree of fit with the liquid cooling plate and the power terminal, so as to improve the heat dissipation efficiency of the liquid cooling plate to the power terminal. The power terminal and the liquid cooling plate are also not easy to be accidentally contacted due to process such as injection molding, and the problem of insulation failure is not easy to occur between the power terminal and the liquid cooling plate. In addition, the heat conduction path between the liquid cooling plate and the power terminal is short, and the liquid cooling plate has a high heat dissipation efficiency for the power terminal.

[0007] In some possible implementations, the insulating thermal pad is an elastic pad, so that the insulating thermal pad is closely fitted with the power terminal and the liquid cooling plate, and the heat exchange efficiency between the power terminal and the liquid cooling plate can be higher.

[0008] In some possible embodiments, the insulating thermal pad includes a first part, a second part, and a third part. The first part and the third part are respectively located on both sides of the second part in the first direction, and both ends of the second part in the first direction are respectively connected to the first part and the third part. The liquid cooling plate is crimped to the second part, and the first part and the third part are respectively located on both sides of the liquid cooling plate in the first direction. In this way, both ends of the insulating thermal pad in the first direction protrude from the liquid cooling plate, and the electrical insulation effect between the power terminal and the liquid cooling plate is better. Furthermore, there is no need to be limited by the insulating material to keep the power terminal and the liquid cooling plate at a certain safe distance.

[0009] In some possible embodiments, the wire rack includes a first frame and a second frame. The second frame is detachably arranged on one side of the first frame in the second direction, and the first frame has a power terminal slot on one side of the second direction facing the second frame. The liquid cooling plate is fixedly connected to the first frame, and the liquid cooling plate crimps the first section and the insulating thermal pad onto the first frame, and the power terminal is located between the second frame and the first frame. In this way, the power terminal and the liquid cooling plate can be assembled on the wire rack more conveniently. In addition, the setting position of the second frame for assembling other components can be more flexible.

[0010] In some possible embodiments, the power terminal further includes a second section and a partition section, the second section and the first section are respectively located on both sides of the partition section in the first direction, the second section is connected to the first section through the partition section, and the second section is used to be connected to the electric vehicle. The partition section includes a protruding structure, the protruding structure protrudes from the surface of the first section on the side facing the liquid cooling plate along the second direction, and the liquid cooling plate is spaced apart on the side of the protruding structure away from the second section along the first direction. In this way, on the basis of insulating the power terminal from the liquid cooling plate, the protruding structure and the first section can both exchange heat with the liquid cooling plate through the insulating thermal pad, which is beneficial to improving the heat exchange efficiency between the liquid cooling plate and the power terminal.

[0011] In some possible implementations, the protruding structure protrudes from the portion of the insulating thermal pad located on the side of the first section facing the liquid cooling plate along the second direction. In this way, the protruding structure can exchange heat with the end surface of the liquid cooling plate facing the second section, which is beneficial to improving the heat exchange efficiency between the power terminal and the liquid cooling plate.

[0012] In some possible implementations, an insulating heat conductor is provided between the protruding structure and the liquid cooling plate, one end of the insulating heat conductor in the first direction is connected to the protruding structure, and the other end of the insulating heat conductor in the first direction is connected to the liquid cooling plate. In this way, the heat on the protruding structure can be transferred to the liquid cooling plate through the insulating heat conductor, so that the heat exchange efficiency between the protruding structure and the liquid cooling plate is high.

[0013] In some possible embodiments, the charging gun further includes a power line and an insulating protective sleeve. The power terminal further includes a third section and a fourth section, the first section and the fourth section are respectively located on both sides of the third section in the first direction, and the first section is connected to the fourth section through the third section. The power line includes a terminal connection end, and the terminal connection end is connected to the surface of the fourth section on the side away from the liquid cooling plate along the second direction, so that the terminal connection end and the liquid cooling plate are respectively located on both sides of the fourth section, and the terminal connection end is more convenient and reliable to connect with the power terminal. The insulating protective sleeve covers the fourth section and the terminal connection end, so that the fourth section and the terminal connection end have good electrical insulation performance. The insulating protective sleeve is located on the side of the liquid cooling plate facing the fourth section along the first direction, and the end of the insulating protective sleeve close to the liquid cooling plate is covered by an insulating thermal pad. In this way, the power terminal will not be partially exposed due to the gap between the insulating protective sleeve and the insulating thermal pad in the first direction, so that the electrical insulation performance of the power terminal can be better.

[0014] In some possible implementations, the insulating thermal pad extends to the junction of the fourth section and the third section. In this way, the overlapping area between the insulating thermal pad and the insulating protective sleeve is larger, and the electrical insulation performance of the power terminal is better. In addition, the deformation of the insulating thermal pad caused by the terminal connection end squeezing the insulating protective sleeve is small, which is conducive to the close fit of the insulating thermal pad with the power terminal and the liquid cooling plate.

[0015] In some possible implementations, the distance between the surface of the fourth section on the side facing away from the liquid cooling plate in the second direction and the liquid cooling plate in the second direction is smaller than the distance between the surface of the third section on the side facing away from the liquid cooling plate in the second direction and the liquid cooling plate in the second direction. In this way, a notch for accommodating at least part of the terminal connection end can be formed on the power terminal, which can reduce the extrusion of the terminal connection end on the insulating protective sleeve, and the deformation of the insulating thermal pad caused by the terminal connection end extruding the insulating protective sleeve is small, which is conducive to the close fit of the insulating thermal pad with the power terminal and the liquid cooling plate.

[0016] In some possible embodiments, the outer edge of one end of the third section connected to the first section is located inside the outer edge of one end of the first section connected to the third section, and the end surface of one end of the first section connected to the third section includes a first area and a second area, the outer edge of the first area coincides with the outer edge of one end of the third section connected to the first section, the second area surrounds the first area along the circumference of the third section, and the second area is used to abut against one end of the insulating protective sleeve close to the liquid cooling plate. In this way, a spacing space can be formed between the circumference of the third section and the circumference of the first section to accommodate at least part of the insulating protective sleeve, which can reduce the deformation of the insulating thermal pad caused by the extrusion of the insulating protective sleeve on the insulating thermal pad. In addition, the second area can limit the insulating protective sleeve, and can limit the movement of the insulating protective sleeve to the liquid cooling plate. The part where the insulating thermal pad is connected to the liquid cooling plate is not easy to be arched due to the extrusion of the insulating protective sleeve, which is conducive to the close fit of the insulating thermal pad with the power terminal and the liquid cooling plate.

[0017] In some possible implementations, the power terminal further includes a first end and a second end, the first end and the second end are respectively located at two ends of the power terminal in the first direction, and the first end is used to connect to the electric vehicle. The second end has an assembly hole, and a temperature sensor is arranged in the assembly hole, and the spacing between the temperature sensor and the first end is greater than or equal to 12 mm and less than or equal to 65 mm. In this way, the temperature sensor is located at a position where the power terminal generates a large amount of heat, which is conducive to more accurately grasping the working condition of the power terminal and facilitating timely detection when the power terminal is overheated.

[0018] In some possible embodiments, the charging gun further includes a liquid inlet pipe, a liquid return pipe and a water immersion rope sensor. The liquid cooling plate has an inlet joint and an outlet joint, the inlet joint is the inlet end of the liquid cooling plate, and the outlet joint is the outlet end of the liquid cooling plate. The inlet joint is connected to the liquid inlet pipe, and the outlet joint is connected to the liquid return pipe. The water immersion rope sensor is a rope-shaped structure, and the water immersion rope sensor is arranged at the inlet joint and the outlet joint, and the water immersion rope sensor is sleeved on the outside of the liquid inlet pipe, the liquid return pipe and the insulating thermal pad. In this way, a water immersion rope sensor can be used to detect leakage at multiple locations such as the connection between the inlet joint and the liquid inlet pipe, and the connection between the outlet joint and the liquid return pipe. The water immersion rope sensor has a large range of leakage detection, which can reduce the number of sensors used for leakage detection, thereby saving installation space. In addition, the water immersion rope sensor is sleeved on the outside of the liquid inlet pipe, the liquid return pipe and the insulating thermal pad, which can also make the water immersion rope sensor more convenient to install.

[0019] In some possible embodiments, the charging gun includes a plurality of power terminals, a plurality of liquid cooling plates corresponding to the power terminals one by one, and a plurality of insulating thermal pads corresponding to the power terminals one by one. The surface of the first section of the power terminal is covered with the corresponding insulating thermal pad. The wire rack has a plurality of power terminal slots corresponding to the power terminals one by one, the power terminals and the corresponding insulating thermal pads are both inserted into the corresponding power terminal slots, the liquid cooling plates are arranged at the corresponding power terminals, and the power terminals and the corresponding insulating thermal pads are crimped onto the wire rack by the corresponding liquid cooling plates. Among them, a plurality of liquid cooling plates are arranged in parallel. In this way, the plurality of liquid cooling plates arranged in parallel can reduce the temperature cascade, so that the temperature at each power terminal is more balanced, which is conducive to reducing the temperature difference of each power terminal. In addition, the plurality of independent liquid cooling plates can also make the assembly of the liquid cooling plates more flexible, which can reduce the requirements for the manufacturing accuracy and assembly accuracy of each component of the gun head, and the assembly of the gun head is relatively easy.

[0020] The second aspect of the embodiment of the present application provides a charging device, which includes a charging pile and a charging gun in any of the above embodiments. The charging pile includes a power supply component and a liquid supply component, and the power supply component is electrically connected to the power terminal of the charging gun through the power line of the charging gun. The charging gun includes a liquid inlet pipe and a liquid return pipe, and the liquid outlet end of the liquid supply component is connected to the inlet end of the liquid cooling plate of the charging gun through the liquid inlet pipe, and the outlet end of the liquid cooling plate is connected to the liquid return end of the liquid supply component through the liquid return pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a charging device provided in an embodiment of the present application;

[0022] Figure 2 An exploded diagram of a charging gun provided in an embodiment of the present application;

[0023] Figure 3 for Figure 2Schematic diagram of the charging gun provided in;

[0024] Figure 4 A schematic diagram of a wire rack provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of a power terminal provided in an embodiment of the present application from one viewing angle;

[0026] Figure 6 A schematic diagram of a power terminal provided in an embodiment of the present application, which is coated with an insulating thermal pad and an insulating protective sleeve from one viewing angle;

[0027] Figure 7 A schematic diagram of a gun tip from one perspective provided in an embodiment of the present application;

[0028] Figure 8 An exploded view of a gun tip provided in an embodiment of the present application;

[0029] Fig. 9 for Figure 5 A schematic diagram of another perspective of the power terminal provided in;

[0030] Fig.10 for Fig. 9 Schematic diagram of the cross section of the AA surface in FIG.

[0031] Fig.11 An enlarged view of the connection between the first section and the third section of the power terminal provided in an embodiment of the present application;

[0032] Fig.12 for Figure 7 A schematic diagram of another perspective of the gun tip is provided in FIG.

[0033] Description of reference numerals:

[0034] 1. Charging gun; 2. Charging pile;

[0035] 10. Gun head; 20. Cable; 30. Power supply assembly; 40. Liquid supply assembly;

[0036] 100, gun head seat;

[0037] 200, wire rack; 210, first frame; 211, power terminal slot; 211a, first power terminal slot; 211b, second power terminal slot; 212, card slot; 212a, first card slot; 220, second frame;

[0038] 300, power terminal; 300a, first power terminal; 300b, second power terminal; 310, first section; 311, second area; 320, second section; 321, first end; 330, partition section; 331, protruding structure; 332, edge structure; 340, third section; 350, fourth section; 351, second end; 360, assembly hole; 370, glue injection hole;

[0039] 400, liquid cooling plate; 400a, first liquid cooling plate; 400b, second liquid cooling plate; 410, inlet joint; 410a, first inlet joint; 410b, second inlet joint; 420, outlet joint; 420a, first outlet joint; 420b, second outlet joint; 430, second through hole; 440, third through hole; 450, mounting ear;

[0040] 500, insulating thermal pad; 500a, first insulating thermal pad; 500b, second insulating thermal pad; 510, first part; 520, second part; 530, third part;

[0041] 600, power line; 600a, first power line; 600b, second power line;

[0042] 700, insulating protective cover; 700a, first insulating protective cover; 700b, second insulating protective cover;

[0043] 810, liquid inlet pipe; 810a, first liquid inlet pipe; 810b, second liquid inlet pipe; 820, liquid return pipe; 820a, first liquid return pipe; 820b, second liquid return pipe;

[0044] 900, temperature sensor;

[0045] x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0046] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0047] Figure 1 A schematic diagram of a charging device provided in an embodiment of the present application.

[0048] like Figure 1As 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 pile 2 and a charging gun 1. The charging pile 2 is connected to the charging gun 1. The charging pile 2 can provide electric energy. The charging gun 1 is a connection device that realizes the transmission of electric energy from the charging pile 2 to the electric vehicle. After the charging gun 1 is connected to the electric vehicle, the charging pile 2 can charge the electric vehicle through the charging gun 1. In some examples, the charging device can be a supercharging device, and the charging power of a single charging gun is usually greater than or equal to 480KW.

[0049] The charging gun 1 includes a gun head 10 and a cable 20 , and two ends of the cable 20 are connected to the gun head 10 and the charging pile 2 respectively.

[0050] The charging pile 2 includes a power supply component 30, which can be connected to the mains electricity through a charging host. The charging host can convert the current provided by the mains electricity into the current required for charging the electric vehicle.

[0051] Figure 2 An exploded view of a charging gun provided in an embodiment of the present application, wherein 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.

[0052] It is understandable that in some implementations, the first direction and the second direction may be set at an angle, the first direction and the third direction may be set at an angle, and the second direction and the third direction may be set at an angle. The first direction and the second direction may not be perpendicular.

[0053] like Figure 2 As shown, and see Figure 1 The gun head 10 includes a power terminal 300, which extends along a first direction. The cable 20 includes a power line 600, which includes a terminal connection end and a component connection end. The terminal connection end is fixed to and electrically connected with the power terminal 300, and the component connection end is fixed to and electrically connected with the power supply component 30. The power supply component 30 is electrically connected to the power terminal 300 through the power line 600.

[0054] Exemplarily, the power terminal 300 may be electrically connected to the power supply assembly 30 via one or more power lines 600 .

[0055] In some examples, the gun head 10 may include a plurality of power terminals 300, and the plurality of power terminals 300 are arranged in parallel. For example, the plurality of power terminals 300 may include a first power terminal 300a and a second power terminal 300b, and the first power terminal 300a and the second power terminal 300b may be arranged side by side along a third direction, and the first power terminal 300a is electrically connected to the power supply component 30 through one or more first power lines 600a, and the second power terminal 300b is electrically connected to the power supply component 30 through one or more second power lines 600b, wherein the first power line 600a refers to a power line 600 electrically connected to the first power terminal 300a, and the second power line 600b refers to a power line 600 electrically connected to the second power terminal 300b, and the first power line 600a and the second power line 600b are different power lines 600.

[0056] In the embodiment of the present application, the gun head 10 further includes a gun head seat 100 . The gun head seat 100 is used to be connected to the electric vehicle, and the power terminal 300 is fixedly disposed in the gun head seat 100 .

[0057] Figure 3 for Figure 2 Schematic diagram of the charging gun provided in.

[0058] like Figure 3 As shown, and see Figure 1 , Figure 2 In order to improve the heat dissipation efficiency of the power terminal 300, the gun head 10 also includes a liquid cooling plate 400, the charging pile 2 also includes a liquid supply component 40, and the cable 20 also includes a liquid inlet pipe 810 and a liquid return pipe 820. The liquid outlet end of the liquid supply component 40 is connected to the inlet end of the liquid cooling plate 400 through the liquid inlet pipe 810, and the outlet end of the liquid cooling plate 400 is connected to the liquid return end of the liquid supply component 40 through the liquid return pipe 820. The liquid cooling plate 400 is used to perform liquid cooling on the power terminal 300.

[0059] In some examples where the gun head 10 includes multiple power terminals 300, the gun head 10 may include multiple liquid cooling plates 400 corresponding to the power terminals 300 one by one, each liquid cooling plate 400 is used to perform liquid cooling on the corresponding power terminal 300, and multiple liquid cooling plates 400 may be arranged in parallel.

[0060] In this way, compared with the solution of arranging multiple liquid cooling plates 400 in series or using one liquid cooling plate 400 to perform liquid cooling on multiple power terminals 300, the multiple liquid cooling plates 400 arranged in parallel can reduce the temperature cascade, so that the temperature at each power terminal 300 is more balanced, which is conducive to reducing the temperature difference of each power terminal 300. In addition, multiple independent liquid cooling plates 400 can also make the assembly of the liquid cooling plates 400 more flexible, which can reduce the requirements for the manufacturing accuracy and assembly accuracy of each component of the gun head 10, and the assembly of the gun head 10 is relatively easy.

[0061] For example, the plurality of liquid cooling plates 400 may include a first liquid cooling plate 400a corresponding to the first power terminal 300a and a second liquid cooling plate 400b corresponding to the second power terminal 300b, and the first liquid cooling plate 400a and the second liquid cooling plate 400b are arranged in parallel. The first liquid cooling plate 400a is arranged at the first power terminal 300a, and the inlet end of the first liquid cooling plate 400a is connected to the liquid outlet end of the liquid supply component 40 through the first liquid inlet pipe 810a, and the outlet end of the first liquid cooling plate 400a is connected to the liquid return end of the liquid supply component 40 through the first liquid return pipe 820a, and the first liquid cooling plate 400a is used to perform liquid cooling and heat dissipation on the first power terminal 300a. The second liquid cooling plate 400b is arranged at the second power terminal 300b, and the inlet end of the second liquid cooling plate 400b is connected to the liquid outlet end of the liquid supply component 40 through the second liquid inlet pipe 810b, and the outlet end of the second liquid cooling plate 400b is connected to the liquid return end of the liquid supply component 40 through the second liquid return pipe 820b. The second liquid cooling plate 400b is used for liquid cooling and heat dissipation of the second power terminal 300b. Among them, the first liquid inlet pipe 810a refers to the liquid inlet pipe 810 connected to the first liquid cooling plate 400a, the first liquid return pipe 820a refers to the liquid return pipe 820 connected to the first liquid cooling plate 400a, the second liquid inlet pipe 810b refers to the liquid inlet pipe 810 connected to the second liquid cooling plate 400b, the second liquid return pipe 820b refers to the liquid return pipe 820 connected to the second liquid cooling plate 400b, the first liquid inlet pipe 810a and the second liquid inlet pipe 810b are different liquid inlet pipes 810 arranged in parallel, and the first liquid return pipe 820a and the second liquid return pipe 820b are different liquid return pipes 820 arranged in parallel.

[0062] Figure 4 A schematic diagram of a wire rack provided in an embodiment of the present application.

[0063] like Figure 4 As shown, and see Figure 2 , Figure 3 In the embodiment of the present application, the gun tip 10 further includes a wire rack 200, which is used to be fixedly connected to the gun tip seat 100. Exemplarily, the wire rack 200 can be fixedly connected to the gun tip seat 100 by fastener connection, welding, etc. For example, the wire rack 200 has a first through hole, and the gun tip seat 100 has a first threaded hole opposite to the first through hole. The wire rack 200 and the gun tip seat 100 can be fixedly connected by a bolt that penetrates the first through hole and the first threaded hole and is threadedly connected to the hole wall of the first threaded hole.

[0064] The wire rack 200 has a power terminal slot 211 on one side in the second direction. Both ends of the power terminal slot 211 in the first direction are open structures. The power terminal 300 is inserted into the power terminal slot 211 .

[0065] When the gun head 10 includes a plurality of power terminals 300, the wire rack 200 has a plurality of power terminal slots 211 corresponding to the power terminals 300, and the power terminals 300 are inserted into the corresponding power terminal slots 211. For example, the wire rack 200 may have a first power terminal slot 211a corresponding to the first power terminal 300a and a second power terminal slot 211b corresponding to the second power terminal 300b, the first power terminal 300a is inserted into the first power terminal slot 211a, the second power terminal 300b is inserted into the second power terminal slot 211b, and the first power terminal slot 211a and the second power terminal slot 211b may be arranged side by side along the third direction.

[0066] Figure 5 A schematic diagram of a power terminal provided in an embodiment of the present application from one perspective.

[0067] like Figure 5 As shown, the power terminal 300 may include a first section 310, a second section 320, a third section 340, a fourth section 350 and a partition section 330, the second section 320 and the first section 310 are respectively located on both sides of the partition section 330 in the first direction, the second section 320 is connected to the first section 310 through the partition section 330, the second section 320 is used to connect to the electric vehicle, the first section 310 and the fourth section 350 are respectively located on both sides of the third section 340 in the first direction, the first section 310 is connected to the fourth section 350 through the third section 340, and the terminal connection end of the power line 600 is fixed and electrically connected to the fourth section 350. For example, the terminal connection end may be welded to the fourth section 350.

[0068] Figure 6 A schematic diagram showing a power terminal provided in an embodiment of the present application, which is covered with an insulating thermal pad and an insulating protective sleeve from one perspective.

[0069] In the embodiment of the present application, the gun tip 10 further includes an insulating thermal pad 500 , and the surface of the first section 310 is covered by the insulating thermal pad 500 , that is, the insulating thermal pad 500 covers the surface of the first section 310 , and the insulating thermal pad 500 wraps the first section 310 around.

[0070] Exemplarily, one end of the insulating thermally conductive pad 500 may extend to the partition section 330 , and the other end of the insulating thermally conductive pad 500 may extend to the third section 340 or the fourth section 350 .

[0071] Figure 7 A schematic diagram of a gun tip from one perspective provided in an embodiment of the present application, Figure 8 An exploded view of a gun tip provided in an embodiment of the present application.

[0072] like Figure 7 , Figure 8As shown, in the embodiment of the present application, the first section 310 coated with the insulating thermal pad 500 is inserted into the power terminal slot 211. In other words, the first section 310 and the insulating thermal pad 500 are both inserted into the power terminal slot 211. In some examples, the first section 310 and the insulating thermal pad 500 can be completely accommodated in the power terminal slot 211. In other examples, part of the first section 310 and part of the insulating thermal pad 500 can pass through the power terminal slot 211, for example, at least one end of the first section 310 in the first direction and at least one end of the insulating thermal pad 500 in the first direction can pass through the power terminal slot 211, and for another example, one side of the first section 310 in the second direction and one side of the insulating thermal pad 500 in the second direction can pass through the power terminal slot 211.

[0073] The liquid cooling plate 400 is arranged at the opening of the power terminal slot 211 in the second direction. The liquid cooling plate 400 is fixedly connected to the wire rack 200. The liquid cooling plate 400 crimps the insulating thermal pad 500 and the first section 310 onto the wire rack 200. Both side surfaces of the first section 310 in the second direction are pressed against the insulating thermal pad 500. The insulating thermal pad 500 separates the power terminal 300 from the liquid cooling plate 400.

[0074] Thus, compared with the solution that the power terminal 300 and the liquid cooling plate 400 are fixed in the plastic body by embedded injection molding, and the power terminal 300 and the liquid cooling plate 400 are fixed to the gun head seat 100 by the injection molding body, the power terminal 300 and the liquid cooling plate 400 are assembled by the wire rack 200, and the assembly between the power terminal 300 and the liquid cooling plate 400 is more convenient. In addition, compared with the solution that the power terminal 300 and the liquid cooling plate 400 are heat exchanged by the plastic body formed by injection molding, the power terminal 300 and the liquid cooling plate 400 are heat exchanged by the insulating thermal pad 500 located therebetween, and the selection of the insulating thermal pad 500 is less restricted, and the insulating thermal pad 500 with better thermal conductivity and higher fit with the liquid cooling plate 400 and the power terminal 300 can be selected to improve the heat dissipation efficiency of the liquid cooling plate 400 to the power terminal 300. In addition, the surface of the first section 310 is covered by the insulating thermal pad 500, and the heat exchange surface between the power terminal 300 and the insulating thermal pad 500 is large, which is conducive to the heat on the power terminal 300 to be quickly transferred to the liquid cooling plate 400 through the insulating thermal pad 500, so that the liquid cooling plate 400 has a higher heat dissipation efficiency for the power terminal 300. Furthermore, compared with the solution of realizing electrical insulation between the power terminal 300 and the liquid cooling plate 400 by plastic body formed by injection molding, the insulating thermal pad 500 separates the power terminal 300 from the liquid cooling plate 400, and the power terminal 300 and the liquid cooling plate 400 are electrically insulated by the insulating thermal pad 500 located therebetween. Since the insulating thermal pad 500 is not limited to being formed by injection molding material, the selection of the insulating thermal pad 500 is less restricted, and the insulating thermal pad 500 with better insulation performance can be selected, so that the power terminal 300 and the liquid cooling plate 400 have better insulation performance. Compared with the solution of achieving electrical insulation between the power terminal 300 and the liquid cooling plate 400 by injection molding of a plastic body, the power terminal 300 and the liquid cooling plate 400 are not easily contacted by mistake due to the injection molding process, and the problem of insulation failure is not easy to occur between the power terminal 300 and the liquid cooling plate 400. In addition, the heat conduction path between the liquid cooling plate 400 and the power terminal 300 is shorter, and the liquid cooling plate 400 has a higher heat dissipation efficiency for the power terminal 300.

[0075] The liquid cooling plate 400 presses the insulating thermal pad 500 and the first section 310 onto the wire rack 200. Both side surfaces of the first section 310 in the second direction are pressed against the insulating thermal pad 500, so that both side surfaces of the first section 310 in the second direction and the liquid cooling plate 400 are in closer contact with the insulating thermal pad 500, so that the first section 310 can more efficiently exchange heat with the liquid cooling plate 400.

[0076] The insulating thermal pad 500 has a high thermal conductivity. For example, the thermal conductivity of the insulating thermal pad 500 may be in the range of about 5 to 30 W / mK, so that the power terminal 300 and the liquid cooling plate 400 can conduct heat efficiently.

[0077] The insulating thermal pad 500 has a high insulation performance. For example, the volume resistivity of the insulating thermal pad 500 can be greater than about 108Ω.cm. For example, the dielectric strength (breakdown voltage) of the insulating thermal pad 500 can be greater than or equal to about 3kv / mm. In this way, the insulating thermal pad 500 can play a good role in insulation isolation between the power terminal 300 and the liquid cooling plate 400.

[0078] On one hand, the insulating thermal pad 500 enables the heat on the power terminal 300 to be transferred to the liquid cooling plate 400 more efficiently, and on the other hand, the insulating thermal pad 500 enables the power terminal 300 to be electrically insulated from the liquid cooling plate 400.

[0079] The groove walls on both sides of the power terminal groove 211 in the third direction can be used to limit the movement of the power terminal 300 therebetween in the third direction.

[0080] Exemplarily, the two side surfaces of the first section 310 in the third direction can respectively crimp the insulating thermal pad 500 onto the two side groove walls of the power terminal groove 211 in the third direction. The two side surfaces of the first section 310 in the third direction are pressed with the insulating thermal pad 500, so that the two side surfaces of the first section 310 in the third direction are in closer contact with the insulating thermal pad 500, so that the first section 310 can more efficiently exchange heat with the insulating thermal pad 500. In addition, the power terminal 300 can also be fixed more firmly on the wiring rack 200.

[0081] For example, Figure 4 As shown, the wire rack 200 has a slot 212 at a position opposite to the partition plate section 330. Figure 5 As shown, the partition section 330 includes a retaining edge structure 332, which protrudes from the surface of the first section 310 on the side away from the liquid cooling plate 400 along the second direction. The retaining edge structure 332 is locked in the slot 212 to limit the movement of the power terminal 300 in the first direction.

[0082] Exemplarily, the rib structure 332 may protrude from a portion of the insulating thermal pad 500 located on a side of the first section 310 away from the liquid cooling plate 400 along the second direction, so as to facilitate the rib structure 332 to be inserted into the slot 212 .

[0083] In some possible implementations, the insulating thermally conductive pad 500 may be an elastic pad, that is, the insulating thermally conductive pad 500 may be compressed.

[0084] In this way, after the elastic insulating thermal pad 500 is compressed, the insulating thermal pad 500 can be closely attached to the power terminal 300 and the liquid cooling plate 400, which is conducive to more efficient transfer of heat from the power terminal 300 to the liquid cooling plate 400.

[0085] The insulating thermal pad 500 has flexible compression deformation capability, high thermal conductivity and high insulation performance. The insulating thermal pad 500 can be used as a thermal interface material between the power terminal 300 and the liquid cooling plate 400 to achieve rapid heat conduction.

[0086] For example, the amount of compression deformation of the insulating thermal pad 500 may be in the range of about 5% to 60%. In this way, the insulating thermal pad 500 is closely attached to the power terminal 300 and the liquid cooling plate 400.

[0087] For example, the hardness of the insulating thermal pad 500 tested by Shore 00 may be in the range of about 20 to 80. In this way, the insulating thermal pad 500 is pressed and deformed, so that the insulating thermal pad 500 is closely attached to the power terminal 300 and the liquid cooling plate 400.

[0088] For example, the insulating thermally conductive pad 500 may include an elastomer and an insulating thermally conductive filler, and the insulating thermally conductive filler may be disposed in the elastomer. The insulating thermally conductive filler may be a granular structure filled in the elastomer.

[0089] Exemplarily, the insulating thermally conductive filler may include, but is not limited to, aluminum nitride, diamond, and the like.

[0090] For example, the compression deformation of the elastic body may be in the range of 5 to 60%, so as to achieve the compression deformation of the insulating thermal pad 500 .

[0091] For example, the hardness of the elastic body tested by Shore 00 may be in the range of 20 to 80. In this way, the compression deformation of the insulating thermal pad 500 can be achieved.

[0092] Exemplarily, the elastomer may be made of one or more of the following materials: silicone, polyurethane, rubber, etc.

[0093] In some other possible implementations, the insulating thermal pad 500 may also be a hard pad. For example, the insulating thermal pad 500 may also be a thermally conductive plastic. For another example, the insulating thermal pad 500 may also be a ceramic. When the insulating thermal pad 500 is a hard pad, the insulating thermal pad 500 and the power terminal 300, and the insulating thermal pad 500 and the liquid cooling plate 400 may be connected via a thermal interface material.

[0094] like Figure 6 , Figure 7As shown, in some possible implementations, the insulating thermal pad 500 includes a first portion 510, a second portion 520, and a third portion 530. The first portion 510 and the third portion 530 are respectively located on both sides of the second portion 520 in the first direction, and both ends of the second portion 520 in the first direction are respectively connected to the first portion 510 and the third portion 530. The liquid cooling plate 400 is crimped to the second portion 520, and the first portion 510 and the third portion 530 are respectively located on both sides of the liquid cooling plate 400 in the first direction.

[0095] In this way, both ends of the insulating thermal pad 500 in the first direction protrude from the liquid cooling plate 400 , and the electrical insulation effect between the power terminal 300 and the liquid cooling plate 400 is better.

[0096] like Figure 8 As shown, in some examples where the gun head 10 includes a plurality of power terminals 300, the gun head 10 includes a plurality of insulating thermal pads 500 corresponding to the power terminals 300, the surface of the first section 310 of the power terminal 300 is covered by the corresponding insulating thermal pad 500, the power terminal 300 and the corresponding insulating thermal pad 500 are both inserted into the corresponding power terminal slot 211, the liquid cooling plate 400 is arranged at the corresponding power terminal 300, and the power terminal 300 and the corresponding insulating thermal pad 500 are crimped onto the wire rack 200 by the corresponding liquid cooling plate 400. Both side surfaces of the power terminal 300 in the second direction are pressed with the corresponding insulating thermal pad 500, and the power terminal 300 and the corresponding liquid cooling plate 400 are separated by the corresponding insulating thermal pad 500.

[0097] For example, the gun head 10 includes a first insulating thermal pad 500a corresponding to the first power terminal 300a and a second insulating thermal pad 500b corresponding to the second power terminal 300b. The surface of the first section 310 of the first power terminal 300a is covered by the first insulating thermal pad 500a, and the first section 310 of the first power terminal 300a and the first insulating thermal pad 500a are both inserted into the first power terminal slot 211a. The first liquid cooling plate 400a is arranged at the first power terminal 300a, that is, the first liquid cooling plate 400a is arranged at the opening of the first power terminal slot 211a in the second direction. The first liquid cooling plate 400a presses the first insulating thermal pad 500a and the first section 310 of the first power terminal 300a onto the wire rack 200, and both side surfaces of the first power terminal 300a in the second direction are pressed with the first insulating thermal pad 500a, and the first power terminal 300a and the first liquid cooling plate 400a are separated by the first insulating thermal pad 500a. The surface of the first section 310 of the second power terminal 300b is covered by the second insulating thermal pad 500b, and the first section 310 of the second power terminal 300b and the second insulating thermal pad 500b are both inserted into the second power terminal slot 211b, and the second liquid cooling plate 400b is arranged at the second power terminal 300b, that is, the second liquid cooling plate 400b is arranged at the opening of the second power terminal slot 211b in the second direction, and the second liquid cooling plate 400b presses the second insulating thermal pad 500b and the first section 310 of the second power terminal 300b onto the wire rack 200, and both side surfaces of the second power terminal 300b in the second direction are pressed with the second insulating thermal pad 500b, and the second power terminal 300b and the second liquid cooling plate 400b are separated by the second insulating thermal pad 500b.

[0098] Exemplarily, the wire rack 200 has a first slot 212a corresponding to the partition section 330 of the first power terminal 300a and a second slot (not shown) corresponding to the partition section 330 of the second power terminal 300b. The edge structure 332 of the first power terminal 300a is clamped in the first slot 212a to limit the movement of the first power terminal 300a in the first direction, and the edge structure 332 of the second power terminal 300b is clamped in the second slot to limit the movement of the second power terminal 300b in the first direction.

[0099] Exemplarily, the end of the liquid cooling plate 400 away from the second section 320 along the first direction has an inlet connector 410 and an outlet connector 420, the inlet connector 410 is the inlet end of the liquid cooling plate 400, the outlet connector 420 is the outlet end of the liquid cooling plate 400, the inlet connector 410 is connected to the liquid inlet pipe 810, and the outlet connector 420 is connected to the liquid return pipe 820.

[0100] When the gun head 10 includes the first liquid cooling plate 400a and the second liquid cooling plate 400b, the first liquid cooling plate 400a has a first inlet joint 410a and a first outlet joint 420a at one end away from the second section 320 along the first direction, the first inlet joint 410a is connected to the first liquid inlet pipe 810a, and the first outlet joint 420a is connected to the first liquid return pipe 820a. The second liquid cooling plate 400b has a second inlet joint 410b and a second outlet joint 420b at one end away from the second section 320 along the first direction, the second inlet joint 410b is connected to the second liquid inlet pipe 810b, and the second outlet joint 420b is connected to the second liquid return pipe 820b. Among them, the first inlet joint 410a is the inlet joint 410 of the first liquid cooling plate 400a, the first outlet joint 420a is the outlet joint 420 of the first liquid cooling plate 400a, the second inlet joint 410b is the inlet joint 410 of the second liquid cooling plate 400b, and the second outlet joint 420b is the outlet joint 420 of the second liquid cooling plate 400b.

[0101] In some possible implementations, the wire rack 200 includes a first frame 210 and a second frame 220. The second frame 220 is detachably disposed on one side of the first frame 210 in the second direction, and the first frame 210 has a power terminal slot 211 on one side of the second frame 220 along the second direction. The liquid cooling plate 400 is fixedly connected to the first frame 210, and the liquid cooling plate 400 presses the first section 310 and the insulating thermal pad 500 onto the first frame 210, and the power terminal 300 is located between the second frame 220 and the first frame 210.

[0102] In this way, when assembling the power terminal 300 and the liquid cooling plate 400, the second frame 220 can be removed from the first frame 210 to avoid the second frame 220 blocking the assembly of the power terminal 300 and the liquid cooling plate 400. After the power terminal 300 and the liquid cooling plate 400 are assembled on the first frame 210, the second frame 220 is assembled on the first frame 210, which makes it more convenient to assemble the power terminal 300 and the liquid cooling plate 400 on the wire rack 200. In addition, the setting position of the second frame 220 for assembling other components can be more flexible.

[0103] In some examples, the first frame 210 and the second frame 220 may be snap-connected.

[0104] In some other examples, the first frame 210 and the second frame 220 may be connected by threaded fasteners.

[0105] Exemplarily, the second frame 220 may be used to fix one or more of the signal terminals, the ground terminals, etc.

[0106] In some other possible implementations, the wire rack 200 may also be an integrated structure.

[0107] In some possible implementations, such as Figure 5 As shown, the partition section 330 includes a protruding structure 331, which protrudes from the surface of the first section 310 on the side facing the liquid cooling plate 400 along the second direction, and the protruding structure 331 can exchange heat with the end face of the insulating thermal pad 500 facing the end of the protruding structure 331. For example, the insulating thermal pad 500 can extend to the end face of the protruding structure 331 facing the end of the liquid cooling plate 400 along the first direction, and contact the end face of the protruding structure 331 facing the end of the liquid cooling plate 400 along the first direction, so that the insulating thermal pad 500 can exchange heat with the protruding structure 331 through contact. In this way, both the first section 310 and the protruding structure 331 can exchange heat with the insulating thermal pad 500, so that there is a larger heat exchange surface between the power terminal 300 and the insulating thermal pad 500, which is conducive to improving the heat exchange efficiency between the power terminal 300 and the liquid cooling plate 400.

[0108] like Figure 7 As shown, the liquid cooling plate 400 is disposed at intervals on a side of the protruding structure 331 away from the second section 320 along the first direction. In this way, electrical insulation between the liquid cooling plate 400 and the power terminal 300 is facilitated.

[0109] A portion of the first section 310 located between the partition section 330 and the liquid cooling plate 400 in the first direction is covered by the first portion 510 .

[0110] For example, Figure 6 As shown, the protruding structure 331 can protrude along the second direction from the portion of the insulating thermal pad 500 located on the side of the first section 310 facing the liquid cooling plate 400, and the protruding structure 331 can exchange heat with the end surface of the liquid cooling plate 400 facing the second section 320, thereby helping to improve the heat exchange efficiency between the power terminal 300 and the liquid cooling plate 400.

[0111] The projection of the protruding structure 331 along the first direction partially overlaps with the projection of the liquid cooling plate 400 along the first direction.

[0112] When the gun head 10 includes a first power terminal 300a, a second power terminal 300b, a first liquid cooling plate 400a, and a second liquid cooling plate 400b, a projection of the protruding structure 331 of the first power terminal 300a along the first direction partially overlaps with a projection of the first liquid cooling plate 400a along the first direction, and a projection of the protruding structure 331 of the second power terminal 300b along the first direction partially overlaps with a projection of the second liquid cooling plate 400b along the first direction.

[0113] In some examples, the protruding structure 331 and the end surface of the liquid cooling plate 400 facing the second section 320 can exchange heat through a gap therebetween.

[0114] In other examples, an insulating heat conductor (not shown) can be arranged between the protruding structure 331 and the liquid cooling plate 400, one end of the insulating heat conductor in the first direction is connected to the protruding structure 331, and the other end of the insulating heat conductor in the first direction is connected to the liquid cooling plate 400. The heat on the protruding structure 331 can be transferred to the liquid cooling plate 400 through the insulating heat conductor to improve the heat exchange efficiency between the protruding structure 331 and the liquid cooling plate 400.

[0115] In some possible implementations, the terminal connection end is connected to a surface of the fourth section 350 on a side facing away from the liquid cooling plate 400 along the second direction.

[0116] In this way, the terminal connection end and the liquid cooling plate 400 are respectively located on both sides of the fourth section 350, and the connection between the terminal connection end and the fourth section 350 is not easily affected by the liquid inlet pipe 810 and the liquid return pipe 820, and the connection between the terminal connection end and the fourth section 350 is more convenient and reliable.

[0117] In some possible implementations, the gun tip 10 further includes an insulating protective sleeve 700 , and the insulating protective sleeve 700 covers the fourth section 350 and the terminal connection end.

[0118] In this way, electrical insulation between the fourth section 350 and the terminal connection end is facilitated.

[0119] When the gun tip 10 includes a first power terminal 300a and a second power terminal 300b, the gun tip 10 includes a first insulating protective sleeve 700a corresponding to the first power terminal 300a and a second insulating protective sleeve 700b corresponding to the second power terminal 300b. The first insulating protective sleeve 700a covers the fourth section 350 of the first power terminal 300a and the terminal connection end connected to the first power terminal 300a, and the second insulating protective sleeve 700b covers the fourth section 350 of the second power terminal 300b and the terminal connection end connected to the second power terminal 300b.

[0120] Fig. 9 for Figure 5 A schematic diagram of another view of the power terminals is provided in Fig.10 for Fig. 9 Schematic diagram of the cross section of the AA surface.

[0121] like Fig. 9 , Fig.10 As shown, in some examples, the insulating protective sleeve 700 is located on one side of the liquid cooling plate 400 along the first direction toward the fourth section 350 , and one end of the insulating protective sleeve 700 close to the liquid cooling plate 400 is covered by the insulating thermal pad 500 .

[0122] In this way, the power terminal 300 will not be partially exposed due to the gap between the insulating protective sleeve 700 and the insulating thermal pad 500 in the first direction, and the electrical insulation performance of the power terminal 300 is better.

[0123] One end of the insulating protective sleeve 700 close to the liquid cooling plate 400 is covered by the third portion 530 .

[0124] The insulating protective sleeve 700 is located on a side of the first section 310 facing the fourth section 350 along the first direction.

[0125] For example, the end of the insulating thermal pad 500 away from the second section 320 can extend to the connection between the fourth section 350 and the third section 340, so that the overlapping area between the insulating thermal pad 500 and the insulating protective sleeve 700 is larger, and the electrical insulation performance of the power terminal 300 is better. In addition, when the size of the terminal connection end in the second direction is larger, the deformation of the insulating thermal pad 500 caused by the terminal connection end squeezing the insulating protective sleeve 700 is smaller, which is conducive to the close fit of the insulating thermal pad 500 with the power terminal 300 and the liquid cooling plate 400.

[0126] In some possible embodiments, the distance between the surface of the fourth section 350 on the side facing away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction is smaller than the distance between the surface of the third section 340 on the side facing away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction.

[0127] In this way, a notch for accommodating at least part of the terminal connection end can be formed on the side of the power terminal 300 facing away from the liquid cooling plate 400, thereby reducing the squeezing of the terminal connection end on the insulating protective sleeve 700. The deformation of the insulating thermal pad 500 caused by the squeezing of the insulating protective sleeve 700 by the terminal connection end is small, which is conducive to the close fit of the insulating thermal pad 500 with the power terminal 300 and the liquid cooling plate 400.

[0128] The distance between the surface of the fourth section 350 on the side away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction and the distance between the surface of the third section 340 on the side away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction are the distances obtained with reference to the same plane perpendicular to the second direction on the liquid cooling plate 400. For example, the distance between the surface of the fourth section 350 on the side away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction may be the distance between the surface of the fourth section 350 on the side away from the liquid cooling plate 400 along the second direction and the plane where the liquid cooling plate 400 is pressed against the insulating thermal pad 500, and at this time, the distance between the surface of the third section 340 on the side away from the liquid cooling plate 400 along the second direction and the liquid cooling plate 400 in the second direction is the distance between the surface of the third section 340 on the side away from the liquid cooling plate 400 along the second direction and the plane where the liquid cooling plate 400 is pressed against the insulating thermal pad 500.

[0129] Fig.11 This is an enlarged view of the connection between the first section and the third section of the power terminal provided in an embodiment of the present application.

[0130] like Fig.11 As shown, in some possible embodiments, the outer edge of one end of the third segment 340 connected to the first segment 310 is located inside the outer edge of one end of the first segment 310 connected to the third segment 340, and the end surface of one end of the first segment 310 connected to the third segment 340 includes a first area (not shown) and a second area 311, the outer edge of the first area coincides with the outer edge of one end of the third segment 340 connected to the first segment 310, the second area 311 surrounds the first area along the circumference of the third segment 340, and the second area 311 is used to abut against one end of the insulating protective sleeve 700 close to the liquid cooling plate 400.

[0131] In this way, a spacing space can be formed between the circumference of the third section and the circumference of the first section to accommodate at least part of the insulating protective sleeve 700, which can reduce the deformation of the insulating thermal pad 500 caused by the insulating protective sleeve 700 squeezing the insulating thermal pad 500. In addition, the second area 311 can limit the insulating protective sleeve 700, and can limit the insulating protective sleeve 700 from moving to the liquid cooling plate 400. The second part 520 of the insulating thermal pad 500 connected to the liquid cooling plate 400 is not easy to be arched due to the squeezing of the insulating protective sleeve 700, which is conducive to the close fit of the second part 520 with the power terminal 300 and the liquid cooling plate 400.

[0132] like Fig.10 As shown, in some possible implementations, the power terminal 300 further includes a first end 321 and a second end 351, the first end 321 and the second end 351 are respectively located at two ends of the power terminal 300 in the first direction, and the first end 321 is used to connect to the electric vehicle. The second end 351 has an assembly hole 360, and a temperature sensor 900 is arranged in the assembly hole 360, so that the temperature of the power terminal 300 can be obtained through the temperature sensor 900, and the temperature sensor 900 is relatively easy to install.

[0133] The second segment 320 includes a first end 321, which is located at an end of the second segment 320 away from the partition segment 330. The fourth segment 350 includes a second end 351, which is located at an end of the fourth segment 350 away from the third segment 340.

[0134] In some examples, a distance L between the temperature sensor 900 and the first end 321 is greater than or equal to 12 mm and less than or equal to 65 mm.

[0135] In this way, the temperature sensor 900 is located at a position where the power terminal 300 generates a large amount of heat, which is conducive to more accurately grasping the working condition of the power terminal 300 and facilitating timely detection when the power terminal 300 is overheated.

[0136] Exemplarily, the surface of the power terminal 300 also has a glue injection hole 370 connected to the assembly hole 360. The glue injection hole 370 is arranged close to the bottom of the assembly hole 360. The glue injection hole 370 is used to inject glue into the assembly hole 360 ​​to bond the temperature sensor 900 to the power terminal 300.

[0137] Exemplarily, the glue injection hole 370 is located on a surface of the power terminal 300 on a side away from the liquid cooling plate 400 along the second direction.

[0138] In some possible embodiments, the charging gun 1 further includes a water immersion rope sensor (not shown). The water immersion rope sensor is a rope-shaped structure. The water immersion rope sensor is arranged at the inlet joint 410 and the outlet joint 420. The water immersion rope sensor can be used to detect liquid leakage. The water immersion rope sensor is set on the outside of the liquid inlet pipe 810, the liquid return pipe 820 and the insulating thermal pad 500. That is, the liquid inlet pipe 810, the liquid return pipe 820 and the insulating thermal pad 500 are set in the space formed by the water immersion rope sensor. In this way, a water immersion rope sensor can be used to detect liquid leakage at multiple positions such as the connection between the inlet joint 410 and the liquid inlet pipe 810 and the connection between the outlet joint 420 and the liquid return pipe 820. The range of liquid leakage detection by the water immersion rope sensor is large, which can reduce the number of sensors used for liquid leakage detection, thereby saving installation space. In addition, the water immersion rope sensor is set on the outside of the liquid inlet pipe 810, the liquid return pipe 820 and the insulating thermal pad 500, which can also make the installation of the water immersion rope sensor more convenient.

[0139] Exemplarily, the water immersion rope sensor is disposed on the outside of the third portion 530 .

[0140] When the gun head 10 includes a plurality of power terminals 300, the water immersion rope sensor is arranged at all the inlet joints 410 and all the outlet joints 420, and the water immersion rope sensor is sleeved on the outside of all the liquid inlet pipes 810, all the liquid return pipes 820 and all the insulating thermal pads 500, that is, all the liquid inlet pipes 810, all the liquid return pipes 820 and all the insulating thermal pads 500 are sleeved in the space formed by the water immersion rope sensor. The water immersion rope sensor can detect leakage at the connection points of all the inlet joints 410 and the liquid inlet pipes 810, and at the connection points of all the outlet joints 420 and the liquid return pipes 820. For example, when the gun head 10 includes a first power terminal 300a, a second power terminal 300b, a first liquid cooling plate 400a, a second liquid cooling plate 400b, a first insulating thermally conductive pad 500a and a second insulating thermally conductive pad 500b, the water immersion rope sensor is arranged at the first inlet joint 410a, the second inlet joint 410b, the first outlet joint 420a and the second outlet joint 420b, and the water immersion rope sensor is arranged on the outside of the first liquid inlet pipe 810a, the second liquid inlet pipe 810b, the first liquid return pipe 820a, the second liquid return pipe 820b, the first insulating thermally conductive pad 500a and the second insulating thermally conductive pad 500b.

[0141] Fig.12 for Figure 7 A schematic diagram of another perspective of the gun tip is provided in FIG.

[0142] like Fig.12 As shown, in some possible implementations, the liquid cooling plate 400 may be fixedly connected to the wire rack 200 by fasteners. For example, the liquid cooling plate 400 may be fixedly connected to the wire rack 200 by bolts.

[0143] Exemplarily, the liquid cooling plate 400 has a second through hole 430 and a third through hole 440, and the second through hole 430 and the third through hole 440 are respectively located on both sides of the liquid cooling plate 400 in the third direction, and the second through hole 430 and the third through hole 440 both penetrate the liquid cooling plate 400 along the second direction, and the wire rack 200 has a second threaded hole opposite to the second through hole 430, and a third threaded hole opposite to the third through hole 440, and the liquid cooling plate 400 is fixedly connected to the wire rack 200 by bolts that pass through the second through hole 430 and the second threaded hole and are threadedly connected to the hole wall of the second threaded hole, and bolts that pass through the third through hole 440 and the third threaded hole and are threadedly connected to the hole wall of the third threaded hole.

[0144] When the gun head 10 includes a first liquid cooling plate 400a and a second liquid cooling plate 400b arranged side by side in the third direction, the second through holes 430 of the first liquid cooling plate 400a are located on a side of the first liquid cooling plate 400a away from the second liquid cooling plate 400b, and the second through holes 430 of the first liquid cooling plate 400a are arranged in a row along the first direction. The second through holes 430 of the second liquid cooling plate 400b are located on a side of the second liquid cooling plate 400b away from the first liquid cooling plate 400a, and the second through holes 430 of the second liquid cooling plate 400b are arranged in a row along the first direction. The first liquid cooling plate 400a has a mounting ear 450 on one side close to the second liquid cooling plate 400b, and the second liquid cooling plate 400b has a mounting ear 450 on one side close to the first liquid cooling plate 400a. The mounting ear 450 of the first liquid cooling plate 400a and the mounting ear 450 of the second liquid cooling plate 400b are arranged in a staggered manner. The third through hole 440 of the first liquid cooling plate 400a is located on the mounting ear 450 of the first liquid cooling plate 400a, and the third through hole 440 of the second liquid cooling plate 400b is located on the mounting ear 450 of the second liquid cooling plate 400b. The third through hole 450 of the first liquid cooling plate 400a and the third through hole 450 of the second liquid cooling plate 400b are arranged in a row along the first direction.

[0145] In this way, the space utilization rate on the wire rack 200 is higher, and the size of the gun head 10 can be smaller.

[0146] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0147] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A charging gun, characterized in that: Includes wire rack, power terminals, liquid cooling plate and insulating thermal pad; The power terminal extends along a first direction, the power terminal comprises a first section, and a surface of the first section is covered by the insulating thermal pad; The wire rack has a power terminal slot on one side in the second direction, the first section and the insulating thermal pad are both inserted into the power terminal slot, the liquid cooling plate is arranged at the opening of the power terminal slot in the second direction, the liquid cooling plate is fixedly connected to the wire rack, the liquid cooling plate presses the insulating thermal pad and the first section onto the wire rack, both side surfaces of the first section in the second direction are pressed against the insulating thermal pad, and the insulating thermal pad separates the power terminal from the liquid cooling plate.

2. The charging gun according to claim 1, characterized in that: The insulating thermally conductive pad is an elastic pad.

3. The charging gun according to claim 1 or 2, characterized in that: The insulating thermal pad comprises a first part, a second part and a third part; The first part and the third part are respectively located on both sides of the second part in the first direction, and both ends of the second part in the first direction are respectively connected to the first part and the third part; The liquid cooling plate is pressed onto the second portion, and the first portion and the third portion are respectively located on two sides of the liquid cooling plate in the first direction.

4. The charging gun according to any one of claims 1 to 3, characterized in that: The wire rack includes a first frame body and a second frame body; The second frame is detachably arranged on one side of the first frame in the second direction, and the first frame has the power terminal slot on one side of the first frame along the second direction facing the second frame; The liquid cooling plate is fixedly connected to the first frame, and the liquid cooling plate presses the first section and the insulating thermal pad onto the first frame. The power terminal is located between the second frame and the first frame.

5. The charging gun according to any one of claims 1 to 4, characterized in that: The power terminal further includes a second section and a partition section, the second section and the first section are respectively located on both sides of the partition section in the first direction, the second section is connected to the first section through the partition section, and the second section is used to be connected to the electric vehicle; The partition plate segment includes a protruding structure, which protrudes from a surface of the first segment on a side facing the liquid cooling plate along the second direction, and the liquid cooling plate is spaced apart from a side of the protruding structure away from the second segment along the first direction.

6. The charging gun according to any one of claims 1 to 5, characterized in that: Also included are power cords and insulating protective sleeves; The power terminal further includes a third section and a fourth section, the first section and the fourth section are respectively located on both sides of the third section in the first direction, and the first section is connected to the fourth section through the third section; The power line includes a terminal connection end, which is connected to the surface of the fourth section along the second direction away from the liquid cooling plate. The insulating protective sleeve covers the fourth section and the terminal connection end. The insulating protective sleeve is located on the side of the liquid cooling plate along the first direction facing the fourth section, and one end of the insulating protective sleeve close to the liquid cooling plate is covered by the insulating thermal pad.

7. The charging gun according to claim 6, characterized in that: The distance between the surface of the fourth section on the side facing away from the liquid cooling plate along the second direction and the liquid cooling plate in the second direction is smaller than the distance between the surface of the third section on the side facing away from the liquid cooling plate along the second direction and the liquid cooling plate in the second direction; and / or, The outer edge of one end of the third section connected to the first section is located inside the outer edge of one end of the first section connected to the third section, the end surface of one end of the first section connected to the third section includes a first area and a second area, the outer edge of the first area coincides with the outer edge of one end of the third section connected to the first section, the second area surrounds the first area along the circumference of the third section, and the second area is used to abut against one end of the insulating protective sleeve close to the liquid cooling plate.

8. The charging gun according to any one of claims 1 to 7, characterized in that: The power terminal further includes a first end and a second end, the first end and the second end are respectively located at two ends of the power terminal in the first direction, and the first end is used to be connected to the electric vehicle; The second end has an assembly hole, a temperature sensor is arranged in the assembly hole, and a distance between the temperature sensor and the first end is greater than or equal to 12 mm and less than or equal to 65 mm.

9. The charging gun according to any one of claims 1 to 8, characterized in that: The charging gun includes a plurality of the power terminals, a plurality of the liquid cooling plates corresponding to the power terminals one by one, and a plurality of the insulating thermal pads corresponding to the power terminals one by one; The surface of the first section of the power terminal is covered by the corresponding insulating thermal pad; The wire rack has a plurality of power terminal slots corresponding to the power terminals one by one, the power terminals and the corresponding insulating thermal pads are both inserted into the corresponding power terminal slots, the liquid cooling plate is arranged at the corresponding power terminals, and the power terminals and the corresponding insulating thermal pads are pressed onto the wire rack by the corresponding liquid cooling plate; Wherein, a plurality of the liquid cooling plates are arranged in parallel.

10. A charging device, characterized in that: Comprising a charging pile and a charging gun as claimed in any one of claims 1 to 9; The charging pile includes a power supply component and a liquid supply component, and the power supply component is electrically connected to the power terminal of the charging gun through the power line of the charging gun; The charging gun includes a liquid inlet pipe and a liquid return pipe. The liquid outlet end of the liquid supply component is connected to the inlet end of the liquid cooling plate of the charging gun through the liquid inlet pipe, and the outlet end of the liquid cooling plate is connected to the liquid return end of the liquid supply component through the liquid return pipe.

Images