Charging gun and charging equipment

Abstract

This application discloses a charging gun and a charging device. The charging gun includes a power terminal, a bracket, a cold plate, and an insulating thermal pad. The power terminal passes through the bracket, which has a groove. The power terminal includes a main body section located in the groove. The cold plate is a blown liquid-cooled plate, located on the groove opening side of the groove, and fixedly connected to the bracket. The insulating thermal pad covers at least a portion of the main body section. At least a portion of the insulating thermal pad is located between the cold plate and the main body section, and the insulating thermal pad is in contact with both the cold plate and the main body section. The cold plate and the power terminal are insulated and isolated by the insulating thermal pad. This charging gun is relatively easy to assemble and has a low cost.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and more particularly to a charging gun and a charging device. Background Technology

[0002] Electric vehicles can be charged using charging equipment, which includes charging stations and charging guns. The charging gun is a connection device that transfers electrical energy from the charging station to the electric vehicle's energy storage. As the battery capacity of electric vehicles increases, improving charging efficiency to shorten charging time is one way to address charging anxiety.

[0003] Increasing charging power leads to increased heat dissipation at the power terminals of the charging gun, thus affecting its performance. Therefore, the heat dissipation efficiency of the power terminals limits the improvement of charging power. Liquid cooling is one way to improve the heat dissipation efficiency of the power terminals. In related technologies, the charging gun is equipped with liquid cooling components. However, these components have complex structures, high costs, and their assembly with the charging power terminals is also complex. Summary of the Invention

[0004] This application provides a charging gun and a charging device. The charging gun is easy to assemble and can reduce the cost of the charging gun.

[0005] The first aspect of this application provides a charging gun, which includes a power terminal, a bracket, a cold plate, and an insulating thermal pad. The power terminal is disposed in the bracket, the bracket has a groove, and the power terminal includes a main body segment located in the groove. The cold plate is a blown liquid-cooled plate, which is disposed on the groove opening side of the groove and is fixedly connected to the bracket. The insulating thermal pad covers at least a portion of the main body segment. At least a portion of the insulating thermal pad is located between the cold plate and the main body segment, and the insulating thermal pad is in contact with both the cold plate and the main body segment. The cold plate and the power terminal are insulated and isolated by the insulating thermal pad.

[0006] Using the above solution, the power terminals and the cold plate are isolated by an insulating thermally conductive pad. The relative positions of the power terminals, the insulating thermally conductive pad, and the cold plate are fixed by fixing the cold plate to the bracket, which simplifies the assembly process. At the same time, the cold plate is a blown liquid-cooled plate, a mature technology that helps reduce costs.

[0007] In some possible implementations, the cold plate includes two substrates fixedly connected together, and a flow channel is formed between the two substrates by blow molding, the flow channel having a liquid inlet and a liquid return interface.

[0008] In practical applications, the inlet and outlet ports are located on the same side of the cold plate. This facilitates pipe connection and layout.

[0009] In some possible implementations, the flow channel section includes several interconnected sub-flow channel segments, which may be linear, curved, or polygonal in shape. The flexible structure of the flow channel section is beneficial for improving heat dissipation between the flow channel section and the power terminals.

[0010] In some possible implementations, 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, aluminum plates are easier to form flow channels with uniform wall thickness and stable structure during blowing.

[0011] In some possible implementations, the two substrates are fixedly connected by cold rolling. Cold rolling provides a good seal between the two substrates and ensures a reliable connection.

[0012] In some possible implementations, the cold plate and the bracket are fixedly connected by fasteners running through both. This makes assembly easy and simple to implement, and provides high reliability.

[0013] In some possible implementations, one of the cold plate and the bracket is provided with a positioning post, and the other of the cold plate and the bracket is provided with a positioning hole, with the positioning post fitting into the positioning hole. This allows for pre-positioning of the cold plate and the bracket, preventing positional shifts during the fixing process and improving the reliability of the cold plate and bracket assembly.

[0014] In some possible implementations, the slot includes a bottom wall and two opposing side walls, and the main body includes a top wall facing away from the bottom wall and two opposing side walls. The insulating thermal pad includes a first pad and two second pads, which are respectively connected to both sides of the first pad. The first pad is located between a cold plate and the top wall, and is pressed against the top wall by the cold plate. The two second pads are respectively attached to the two side walls, and are located between the side wall and the side wall on the same side. At least a portion of the wall of the main body is attached to the bottom wall of the slot. In this way, the insulating thermal pad covers a large area of ​​the main body, which is beneficial to ensuring the insulation effect of the power terminals. The two side walls of the slot of the bracket constrain the position of the insulating thermal pad, resulting in high assembly reliability. In addition, the attachment of at least a portion of the wall of the main body to the bottom wall of the slot helps to ensure the positional accuracy of the power terminals within the charging gun.

[0015] In some possible implementations, the main body section has a protruding ridge extending towards the bottom wall of the tank on the side facing the bottom wall. This side includes two bottom wall surfaces, located on either side of the protruding ridge, with the bottom wall surfaces facing away from the bottom wall of the tank relative to the ridge's base. The insulating thermal pad also includes two third pad portions, each connected to one of the two second pad portions, located between the bottom wall surface and the bottom wall of the tank. The ridge's base portion is in contact with the bottom wall of the tank. Thus, the protruding ridge increases the creepage distance of the power terminals, ensuring electrical safety.

[0016] In some possible implementations, the charging gun includes multiple power terminals, each with a corresponding cold plate and an insulating thermal pad, and the flow channels of the multiple cold plates are arranged in parallel. This ensures temperature uniformity at each power terminal, which is beneficial for improving the charging power of the charging gun.

[0017] The second aspect of this application provides a charging device, which includes a charging pile and a charging gun as described in any of the above embodiments. The charging pile includes a liquid supply component, and the cold plate of the charging gun is connected to an inlet pipe and a return pipe. The inlet pipe is connected to the outlet end of the liquid supply component, and the return pipe is connected to the return end of the liquid supply component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a charging device provided in an embodiment of this application;

[0019] Figure 2 A schematic diagram of a charging gun provided for an embodiment of this application;

[0020] Figure 3 for Figure 2 An exploded view of the charging gun shown in the image;

[0021] Figure 4 for Figure 2 A schematic diagram of a partial structure of the charging gun head from one perspective;

[0022] Figure 5 for Figure 4 A schematic diagram of a partial structure of the gun head shown from another perspective;

[0023] Figure 6 A schematic diagram of a first type of cold plate provided in an embodiment of this application;

[0024] Figure 7 for Figure 6 Schematic diagram of the cross section along the AA direction;

[0025] Figure 8 A schematic diagram of a bracket provided in an embodiment of this application;

[0026] Figure 9 A schematic diagram of a power terminal provided in an embodiment of this application;

[0027] Figure 10 for Figure 9 A schematic diagram of the power terminals from another perspective;

[0028] Figure 11 An assembly diagram of a power terminal and an insulating thermal pad provided for an embodiment of this application;

[0029] Figure 12 for Figure 11 A schematic diagram of the power terminals and insulating thermal pad from another perspective;

[0030] Figure 13 This application provides an embodiment of an assembly diagram of a power terminal and a power line.

[0031] Figure 14 A schematic diagram of a second type of cold plate provided in an embodiment of this application;

[0032] Figure 15 This is a schematic diagram of a third type of cold plate provided in an embodiment of this application. Detailed Implementation

[0033] The charging gun of the charging equipment can be connected to the vehicle to enable power supply and communication between the vehicle and the charging station. Please refer to [link / reference needed]. Figure 1 , Figure 1 This is a schematic diagram of a charging device provided in an embodiment of this application.

[0034] like Figure 1 As shown in the illustration, this application provides a charging device for charging electric vehicles. The charging device includes a charging gun 1 and a charging station 2. The charging gun 1 includes a gun head 11 and a cable assembly 12. The gun head 11 is connected to the charging station 2 via 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 station 2 can charge the electric vehicle through the charging gun 1.

[0035] The charging pile 2 includes a power supply component 21, which can be connected to the mains power supply through the charging host. The charging host can convert the current supplied by the mains power supply into the current required for charging electric vehicles.

[0036] Please refer to 2 and 3 together. Figure 3 , Figure 2 This is a schematic diagram of a charging gun provided in an embodiment of this application. Figure 3 for Figure 2 The diagram shows an exploded view of the charging gun. In the diagram, the x-direction is the first direction, the y-direction is the second direction, and 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 implementations, 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] like Figure 2 and Figure 3 As shown, and in combination Figure 1 This application embodiment also provides a charging gun 1, which includes a power terminal 300 built into the gun head 11. The power terminal 300 can be considered as a component of the gun head 11. The power terminal 300 extends along a first direction. The cable assembly 12 of the charging gun 1 includes a power line 600, one end of which is electrically connected to the power terminal 300, and the other end of which is electrically connected to the power supply assembly 21 of the charging pile 2. The power terminal 300 is electrically connected to the power supply assembly 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 realize the charging of the electric vehicle.

[0039] The circuit assembly 12 may have two power lines 600, which can 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 terminals of the DC power supply of the charging pile 2 to transmit DC power to the power battery on the electric vehicle side for charging. Each power line 600 may have one or more power cables.

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

[0041] In other possible implementations, the cable assembly 12 of the charging gun 1 may also include a grounding wire and several signal wires.

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

[0043] exist 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, which can be arranged along a second direction y. The number of power lines 600 of the charging gun 1 can 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 via 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 via the second power line 600b.

[0044] In this embodiment, the charging gun 1's head 11 includes a housing 100, and the power terminal 300 can be installed inside the housing 100. The housing 100 can be used to connect to the electric vehicle side. The housing 100 can protect the power terminal 300 and other possible components (such as signal terminals or circuit boards) built into it.

[0045] In this embodiment, the charging gun 1's head 11 includes a bracket 200, and a power terminal 300 can be mounted on the bracket 200. The bracket 200 is connected to the housing 100. The power terminal 300 is connected to the housing 100 through the bracket 200, which facilitates assembly and maintenance of the power terminal 300.

[0046] The bracket 200 has a slot 210 located on one side of the bracket 200 in the third direction. A power terminal 300 passes through the slot 210, which is open at both ends in the first direction. This allows one end of the power terminal 300 to extend out of the slot 210 for connection to the electric vehicle side, and the other end of the power terminal 300 to be easily connected to the power line 600.

[0047] In an implementation of the charging gun 1 including multiple power terminals 300, the bracket 200 may have multiple slots 210 matching the number of power terminals 300, with each power terminal 300 matching one of the multiple slots 210.

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

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

[0050] There are several ways to connect the bracket 200 to the housing 100. For example, the bracket 200 can be detachably connected to the housing 100 using fasteners such as bolts. Alternatively, the bracket 200 can be welded to the housing 100. Yet another example is that the bracket 200 and the housing 100 can be securely connected using a snap-fit ​​structure.

[0051] In an implementation scheme with multiple brackets 200, the multiple brackets 200 can be connected together and then connected to the housing 100. The connection between the brackets 200 can be achieved by fastener connection, welding connection, or snap-fit ​​connection.

[0052] In this embodiment, the charging gun 1's head 11 includes a cold plate 400, which is used for liquid cooling of the power terminal 300. During the charging process, the power terminal 300 of the charging gun 1 generates heat. The cooling plate 400 dissipates heat from the power terminal 300, which helps to support the increase of charging power.

[0053] The charging pile 2 also includes a liquid supply assembly 22. The cable assembly 12 of the charging gun 1 includes an inlet pipe 710 and a return pipe 720. The outlet end of the liquid supply assembly 22 is connected to the inlet end of the cold plate 400 through the inlet pipe 710, and the outlet end of the cold plate 400 is connected to the return end of the liquid supply assembly 22 through the return pipe 720. In this way, the liquid cooling medium of the liquid supply assembly 22 can flow into the cold plate 400 through the inlet pipe 710, and exchange heat with the power terminal 300 during the flow through the cold plate 400. After exchanging heat with the power terminal 300, the liquid cooling medium flows back to the liquid supply assembly 22 through the return pipe 720.

[0054] In some possible implementations, the liquid supply assembly 22 may include a liquid storage tank, a liquid pump, and a radiator to form a working fluid source that can provide liquid-cooled working fluid. The lower-temperature working fluid in the liquid storage tank can flow to the cold plate 400 under the action of the liquid pump, while the higher-temperature working fluid returning from the cold plate 400 can be cooled by the radiator before flowing back into the liquid storage tank. Thus, a liquid-cooled circulation loop is formed between the liquid supply assembly 22 and the cold plate 400.

[0055] In other possible implementations, the liquid supply assembly 22 may not have a liquid storage tank. The working fluid can be directly introduced into the liquid cooling cycle after being cooled by the radiator. The heat dissipation requirements of the power terminal 300 can be met by reasonably controlling the flow rate and pressure of the working fluid.

[0056] The liquid supply component 22 can also adopt other configurations, as long as they can meet the functional requirements of liquid cooling heat dissipation. This application embodiment does not limit the specific configuration.

[0057] In the implementation of a charging gun 1 including multiple power terminals 300, the charging gun 1 can be equipped with multiple cooling plates 400 matching the number of power terminals 300, with each cooling plate 400 corresponding to one power terminal 300. In this way, each power terminal 300 dissipates heat through its corresponding cooling plate 400, improving the heat dissipation efficiency of the power terminal 300 and facilitating the increase in charging power. Furthermore, the arrangement of multiple relatively independent cooling plates 400 allows for more flexible and convenient assembly between the cooling plates 400 and their corresponding power terminals 300, reducing the requirements for manufacturing and assembly precision of related structural components and thus saving costs.

[0058] exist Figure 2 and Figure 3In the example shown, the plurality of cold plates 400 include a first cold plate 400a and a second cold plate 400b. The first cold plate 400a cooperates with a first power terminal 300a for heat dissipation of the first power terminal 300a. The second cold plate 400b cooperates with a second power terminal 300b for heat dissipation of the second power terminal 300b.

[0059] In some possible implementations, multiple cold plates 400 are arranged in parallel, that is, each cold plate 400 forms a liquid-cooled working fluid circulation loop with the liquid supply component 22 of the charging pile 2. The charging gun 1 includes multiple liquid inlet pipes 710 and multiple liquid return pipes 720 matching the number of cold plates 400. A cold plate 400 is connected to the liquid outlet end of the liquid supply component 22 through the corresponding liquid inlet pipe 710, and is connected to the liquid return end of the liquid supply component 22 through the corresponding liquid return pipe 720.

[0060] By arranging multiple cold plates 400 in parallel, the temperature of each power terminal 300 can be made more uniform, which helps to reduce the temperature difference between the power terminals 300 and improve the charging power. In addition, arranging multiple cold plates 400 in parallel also allows for more flexible assembly of their respective liquid inlet pipes 710 and liquid return pipes 720.

[0061] exist Figure 2 and Figure 3 In the example shown, the first cold plate 400a is connected to the outlet end of the liquid supply assembly 22 via the first liquid inlet pipe 710a, and to the return end of the liquid supply assembly 22 via the first liquid return pipe 720a. The second cold plate 400b is connected to the outlet end of the liquid supply assembly 22 via the second liquid inlet pipe 710b, and to the return end of the liquid supply assembly 22 via the second liquid return pipe 720b.

[0062] In this embodiment of the application, the charging gun 1's head 11 includes an insulating thermal pad 500. The insulating thermal pad 500 covers at least a portion of the power terminal 300. At least a portion of the insulating thermal pad 500 is located between the power terminal 300 and the cold plate 400. The insulating thermal pad 500 is in contact with the power terminal 300 and also with the cold plate 400.

[0063] In this way, heat exchange between the cold plate 400 and the power terminal 300 is achieved through the insulating thermally conductive pad 500. This design places fewer restrictions on the material selection for the insulating thermally conductive pad 500; it can be selected based on its good thermal conductivity and good adhesion to both the cold plate 400 and the power terminal 300, thereby improving the heat exchange efficiency between them and enhancing the heat dissipation efficiency of the power terminal 300. The insulating thermally conductive pad 500 makes surface contact with both the power terminal 300 and the cold plate 400, which facilitates the relatively rapid transfer of heat generated by the power terminal 300 to the cold plate 400. Simultaneously, the insulating thermally conductive pad 500 provides electrical insulation between the cold plate 400 and the power terminal 300. Unlike traditional injection molding processes, this design allows for less restriction on the material selection of the insulating thermally conductive pad 500; it can be selected based on its excellent insulation properties, ensuring good insulation between the power terminal 300 and the cold plate 400.

[0064] In some possible implementations, the insulating thermal pad 500 can be made of an elastic material. This allows for a tighter fit between the insulating thermal pad 500 and the power terminal 300 or the cold plate 400, facilitating heat transfer. Furthermore, the insulating thermal pad 500's compressibility reduces the flatness requirements of both the bonding surfaces of the cold plate 400 and the power terminal 300, thus saving on processing costs.

[0065] For example, the insulating thermal pad 500 can be made of polyimide film.

[0066] In other possible implementations, the insulating thermal pad 500 can also be a rigid pad, which does not have the ability to compress and deform. For example, thermally conductive plastic or ceramic.

[0067] In the implementation scheme of charging gun 1 including multiple power terminals 300, charging gun 1 can be provided with multiple insulating heat-conducting pads 500 matching the number of power terminals 300 and cold plates 400. The multiple insulating heat-conducting pads 500 are matched one-to-one with the multiple power terminals 300 and the multiple cold plates 400, and an insulating heat-conducting pad 500 is provided between each corresponding power terminal 300 and cold plate 400.

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

[0069] Please refer to this as well. Figure 4 and Figure 5 , Figure 4 for Figure 2 A schematic diagram of a partial structure of the charging gun head from one perspective. Figure 5 for Figure 4 A schematic diagram of another perspective of the partial structure of the gun head shown.

[0070] In this embodiment, at least a portion of the insulating thermal pad 500 is located within the groove 210 of the bracket 200. The groove 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 thermal pad 500. A cold plate 400 is disposed on the groove opening side of the groove 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 thermal 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, it can press the insulating thermal pad 500 onto the power terminal 300, and at the same time press the power terminal 300 against the bracket 200. Compared with the injection molding method, the power terminal 300 and the cold plate 400 are assembled with the housing 100 of the gun head 11 through the bracket 200, which is a simpler assembly method.

[0072] In this embodiment, the cold plate 400 is a blown liquid-cooled plate. The cold plate 400 is formed by blown expansion, which is a relatively simple process and helps to reduce the cost of the charging gun 1.

[0073] Please refer to this as well. Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the first type of cold plate provided in the embodiments of this application. Figure 7 for Figure 6 Schematic diagram of the cross section along the AA direction.

[0074] The cold plate 400 includes a flow channel 430, which has a flow cavity for the flow of liquid cooling fluid. The flow channel 430 has a liquid inlet and a liquid return interface. The liquid inlet is used to connect to the liquid inlet pipe 710, and the liquid return interface is used to connect to the liquid return pipe 720.

[0075] In some possible implementations, the liquid inlet of the cold plate 400 can be connected to a liquid inlet pipe connector 730, and the liquid return port of the cold plate 400 can be connected to a liquid return pipe connector 740. This facilitates the connection between the liquid inlet pipe 710 and the cold plate 400, as well as the connection between the liquid return pipe 720 and the cold plate 400.

[0076] In application, the liquid inlet line 710 and the liquid return line 720 can be flexible pipes or hoses, which facilitates the arrangement of the lines and adjustment of the relative position between the gun head 11 and the charging pile 2.

[0077] For example, both the inlet pipe connector 730 and the return pipe connector 740 can be connected to the cold plate 400 by welding.

[0078] In the application, the liquid inlet and liquid return ports of the cold plate 400 are located on the same side of the cold plate 400 in the first direction, close to the cable assembly 12 of the charging gun 1. This facilitates the connection of related cables and also contributes to the compact design of the gun head 11.

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

[0080] In this embodiment, the cold plate 400 is a blown liquid cooling plate. The cold plate 400 may include two substrates, which are fixedly connected. A flow channel 430 is formed between the two substrates by blow molding.

[0081] like Figure 6 and Figure 7 As shown, the two substrates of the cold plate 400 are a first substrate 410 and a second substrate 420, which are fixedly connected. The first substrate 410 and the second substrate 420 are blown together to form a flow channel 430.

[0082] The blow forming process for 400 cold-rolled steel plate can be performed as follows:

[0083] Fabricate the first substrate 410 and the second substrate 420;

[0084] A coating 440 is printed on one side of the first substrate 410 according to a pre-designed flow channel 430, that is, the area of ​​the coating 440 is adapted to the flow channel 430. For example, if the flow channel 430 is U-shaped, the coating 440 is also U-shaped.

[0085] After the coating 440 is printed, the first substrate 410 and the second substrate 420 are fixedly connected so that the first substrate 410 and the second substrate 420 are bonded and sealed, wherein the side of the first substrate 410 with the coating 440 printed faces the side where the second substrate 420 is located; with the presence of the coating 440, the first substrate 410 and the second substrate 420 are sealed and connected in the area where the coating 440 is not printed.

[0086] A blow-blowing operation is performed on the first substrate 410 and the second substrate 420 that are fixedly connected. Specifically, high-pressure gas is blown between the first substrate 410 and the second substrate 420. Due to the isolation effect of the coating 440, the area where the coating 440 is located on the first substrate 410 protrudes and deforms in a direction away from the second substrate 420, thereby forming a flow channel portion 430 with a flow channel cavity 430a.

[0087] In other possible operating schemes, the coating 440 may be printed on the side of the second substrate 420 facing the first substrate 410; or, the coating 440 may be printed on both the first substrate 410 and the second substrate 420.

[0088] In other possible operating schemes, the second substrate 420 may also be deformed in a direction away from the first substrate 410.

[0089] For example, coating 440 can be made of graphite. This reduces costs.

[0090] For example, the first substrate 410 and the second substrate 420 can be made of aluminum plates. This results in lower costs.

[0091] For example, the first substrate 410 and the second substrate 420 can be fixedly connected by cold rolling. This provides good sealing and is easy to operate.

[0092] The cold plate 400 may have a flat surface that fits against the insulating thermal 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 cooling plate, and the structure of the flow channel 430 is not limited and can be flexibly set according to the heat dissipation requirements of the power terminal 300.

[0094] exist Figure 6 In the example shown, the flow channel section 430 of the cold plate 400 includes a first sub-flow channel section 431, a second sub-flow channel section 432, and a third sub-flow channel section 433 that are interconnected. The first sub-flow channel section 431 and the third sub-flow channel section 433 are both straight, while the second sub-flow channel section 432 is curved, specifically arc-shaped. The flow channel section 430 as a whole has a U-shaped shape. The first sub-flow channel section 431 is connected to the third sub-flow channel section 433 through the second sub-flow channel section 432. The end of the first sub-flow channel section 431 furthest from the second sub-flow channel section 432 forms a liquid inlet interface, which is connected to the liquid inlet pipe connector 730. The end of the third sub-flow channel section 433 furthest from the second sub-flow channel section 432 forms a liquid return interface, which is connected to the liquid return pipe connector 740.

[0095] In this embodiment, the cold plate 400 and the bracket 200 can be fixedly connected using fasteners. Please refer to the following: Figure 8 , Figure 8This is a schematic diagram of a bracket provided in an embodiment of this application. The cold plate 400 and the bracket 200 can be fixedly connected by fasteners passing through them.

[0096] like Figure 8 As shown, the bracket 200 may be provided with a first mounting hole 221. For example... Figure 6 As shown, the cold plate 400 may be provided with a second mounting hole 451. For example... Figure 4 and Figure 5 As shown, the fastener 800 can pass through the second mounting hole 451 and the first mounting hole 221 to fix the cold plate 400 to 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 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 facilitates maintenance of the cold plate 400, the insulating thermal pad 500, or the power terminal 300 and other related structures.

[0098] In other examples, the fastener 800 can be a combination of bolt and nut. After passing through the first mounting hole 221 and the second mounting hole 451, the fastener 800 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 as a threaded hole.

[0100] In some possible implementations, the cold plate 400 has second mounting holes 451 on both sides in the second direction, and the bracket 200 has first mounting holes 221 corresponding to the positions of the second mounting holes 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 reliability of the connection between the cold plate 400 and the bracket 200, but also avoids interference or impact on the assembly of structures such as the power terminal 300.

[0101] In some examples, the cold plate 400 may be provided with two mounting ears 450, which are arranged in a second direction. A second mounting hole 451 is provided on the mounting ears 450.

[0102] In some examples, the bracket 200 may have two mounting plates on both sides of the groove 210 along the second direction, each mounting plate having a first mounting hole 221.

[0103] In the scheme where the bracket 200 is provided with multiple slots 210, the multiple slots 210 are arranged in the second direction, and two adjacent slots 210 can be connected as one unit by 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] like Figure 8 In the example shown, the bracket 200 includes a first groove 210a and a second groove 210b arranged along a 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 groove 210a, and a second mounting plate 220b and a third mounting plate 220c are respectively provided on both sides of the second groove 210b. The first groove 210a and the second groove 210b are connected by the second mounting plate 220b. The first mounting plate 220a has a first mounting hole 221, which mates with the second mounting hole 451 on the same side of the first cold plate 400a. The second mounting plate 220b has a first mounting hole 221, which mates with the second mounting hole 451 on the same side of the first cold plate 400a. The second mounting plate 220b also has another first mounting hole 221, which mates with the second mounting hole 451 on the same side of the second cold plate 400b. The third mounting plate 220c has a first mounting hole 221, which mates with the second mounting hole 451 on the same side of the second cold plate 400b.

[0105] In other possible implementations, the mounting ear plate 450 of the cold plate 400 can be provided with two or more second mounting holes 451, and the corresponding position of the bracket 200 is provided with a matching number of second mounting holes 451.

[0106] In some possible implementations, the cold plate 400 is provided with positioning holes 452, and the bracket 200 is provided with positioning posts 222, which are inserted into the positioning holes 452. In this way, the cold plate 400 and the bracket 200 can be pre-positioned through the cooperation of the positioning holes 452 and the positioning posts 222, so as to avoid the positional displacement of the cold plate 400 and the bracket 200 during the fixed connection process, thereby improving the reliability of the assembly of the cold plate 400 and the bracket 200.

[0107] In some examples, the cold plate 400 has positioning holes 452 on both sides in the second direction. The bracket 200 has positioning posts 222 corresponding to the positions of each positioning hole 452. This ensures the positioning reliability of the cold plate 400 and the bracket 200.

[0108] In application, the positioning hole 452 can be provided on the mounting ear plate 450. The positioning post 222 can be provided on the mounting plate.

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

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

[0111] Please refer to this as well. Figure 9 , Figure 9 This is a schematic diagram showing one perspective of a power terminal provided in an embodiment of this application. Figure 9 As shown, the power terminal 300 includes a main body segment 310 that extends along a first direction. (In conjunction with...) Figures 2 to 5 The main body segment 310 is located within the slot 210 of the bracket 200. The power terminal 300 also includes a first segment 320 and a second segment 330, which are located on opposite sides of the main body segment 310 in a first direction. The first segment 320 is used for connection to the electric vehicle side, and the third segment 330 can be connected to the power line 600.

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

[0113] In some examples, after the power terminal 300 passes through the slot 210 of the bracket 200, part of the second segment 330 may be located inside the slot 210, and part may extend out of the bracket 200 through the opening at the other end of the slot 210 in the first direction.

[0114] After the power terminal 300 is assembled with the slot 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 reliability of the electrical connection when the gun head 11 is connected to the electric vehicle side.

[0115] Among some possible implementation schemes, such as Figure 9As shown, a protruding structure 315, protruding in a third-direction upward, is provided at the junction of the main body segment 310 and the first segment 320 of the power terminal 300. The protruding structure 315 is disposed on the side of the main body segment 310 facing away from the bottom wall 211 of the groove in a third-direction upward. The first segment 320 of the power terminal 300 includes a plug-in segment 321 and an annular protrusion 322. In a first direction, the plug-in segment 321 is located between the annular protrusion 322 and the protruding structure 315. Figure 8 As shown, the slot 210 of the bracket 200 has an end plate 230 on the side near the first segment 320 in the first direction. This end plate 230 has a slot 231 that communicates with the slot 210 and is adapted to the insertion segment 321 of the power terminal 300. (Combined) Figure 4 After the power terminal 300 and the bracket 200 are assembled, the insertion section 321 of the first segment 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 segment 310 abuts against the end plate 230, and the annular protrusion 322 of the first segment 320 abuts against the end plate 230. In other words, the two opposite faces of the end plate 230 in the first direction abut against the annular protrusion 322 and the protruding structure 315, respectively. In this way, the relative positions of the power terminal 300 and the bracket 200 in the first direction can be limited.

[0116] In other possible implementations, 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, a retaining ridge extending toward the bottom wall 211 of the slot can be provided at the junction of the main body segment 310 and the first segment 320 of the bracket 200, and a retaining groove is provided at the corresponding position on the bottom wall 211 of the slot of the bracket 200. When the power terminal 300 passes through the slot 210, the retaining ridge can be engaged in the retaining groove.

[0117] Please refer to this as well. Figures 10 to 12 , Figure 10 for Figure 9 A schematic diagram of the power terminals from another perspective. Figure 11 This is a schematic diagram of the assembly of a power terminal and an insulating thermal pad provided in an embodiment of this application. Figure 12 for Figure 11 A schematic diagram of the power terminals and insulating thermal pads from another perspective.

[0118] In this embodiment, the insulating thermal pad 500 includes at least a portion of the main body segment 310 of the power terminal 300. The main body segment 310 includes a top wall surface 311 facing away from the bottom wall 211 of the groove and two opposing side wall surfaces 312, which are opposite each other in a second direction. The top wall surface 311 of the main body segment 310 can be understood as the surface of the main body segment 310 facing the groove opening side of the groove portion 210 in a third direction.

[0119] The insulating thermally conductive pad 500 includes a first pad portion 510 and two second pad portions 520, which 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 attached to 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 thermally conductive pad 500 are arranged in the second direction. The first pad portion 510 of the insulating thermally conductive 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] In this way, 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 large area covered by the insulating thermal pad 500 on the main body section 310 is beneficial to ensuring the insulation effect between the power terminal 300 and other components.

[0121] In this embodiment, at least a portion of the wall surface of the main body segment 310 of the power terminal 300 is in contact with the bottom wall 211 of the groove 210. It can be understood that the at least portion of the wall surface in contact with the bottom wall 211 is located on the side of the main body segment 310 facing away from the groove opening in a third-order direction. Thus, the contact between the power terminal 300 and the bottom wall 211 of the bracket 200 is a hard contact, which ensures the relative position of the power terminal and the bracket 200 in a third-order direction, thus facilitating the accuracy of the power terminal 300's position within the nozzle 11.

[0122] In some possible implementations, the main body segment 310 of the power terminal 300 has a protruding rib 313 extending towards the bottom wall 211 of the groove on the side facing the bottom wall 211. The side of the main body segment 310 facing the bottom wall 211 includes two bottom wall surfaces 314, located on opposite sides of the protruding rib 313. The bottom wall surfaces 314 are further away from the bottom wall 211 than the bottom surface 3131 of the protruding rib 313. The bottom surface 3131 of the protruding rib 313 is the wall surface of the protruding rib 313 facing the bottom wall 211 in a third direction. The insulating thermal pad 500 also includes two third pad portions 530, which are connected to two second pad portions 520 respectively. The third pad portions 530 are located between the bottom wall surfaces 314 of the main body segment 310 and the bottom wall 211 of the groove.

[0123] The first pad portion 510 and the third pad portion 530 of the insulating thermal conductive 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 thermal conductive 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. This can limit the position of the insulating thermal conductive pad 500 in the third direction. Combined with the limiting of the insulating thermal conductive pad 500 in the second direction by the groove portion 210, the displacement of the insulating thermal conductive pad 500 can be avoided, which is conducive to ensuring the heat transfer effect and insulation effect of the insulating thermal conductive pad 500 between the power terminal 300 and the cold plate 400.

[0124] The bottom surface 3131 of the protruding ridge 313 fits against the bottom wall 211 of the groove. The protruding ridge 313 can, on the one hand, ensure the position 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 relevant regulations.

[0125] In other possible implementations, the insulating thermal pad 500 can completely cover the body segment 310 in the circumferential direction.

[0126] Please refer to this as well. Figure 13 , Figure 13 This is a schematic diagram of the assembly of a power terminal and a power line provided in an embodiment of this application.

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

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

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

[0130] In some possible implementations, the other end of the insulating thermal pad 500 in the first direction can extend to the area where the second segment 330 is located. When an insulating protective sleeve is provided, the insulating thermal pad 500 and the insulating protective sleeve have an overlapping area in the first direction. In this way, the power terminal 300 will not be partially exposed due to the gap between the insulating thermal pad 500 and the insulating protective sleeve in the first direction, thus ensuring that the power terminal 300 has good electrical insulation performance.

[0131] In this embodiment, the cold plate 400 is a blown liquid-cooled plate, and the structure of its flow channel 430 can be designed flexibly and in various ways. Besides the aforementioned... Figure 6 Besides the example shown, there can be other structural forms.

[0132] For example Figure 14 As shown, Figure 14 A schematic diagram of a second type of cold plate provided in an embodiment of this application is shown. In this embodiment, the flow channel 430 of the cold plate 400 includes a first sub-flow channel 4301, a second sub-flow channel 4302, a third sub-flow channel 4303, and a fourth sub-flow channel 4304. The first sub-flow channel 4301 includes a sub-flow channel segment that is straight in shape. The second sub-flow channel 4302 and the third sub-flow channel 4303 each include several sequentially connected sub-flow channel segments, wherein some sub-flow channel segments are straight in shape and some sub-flow channel segments are curved in shape (e.g., arc shape). The fourth sub-flow channel 4304 includes a sub-flow channel segment that is straight in shape. The second sub-flow channel 4302 and the third sub-flow channel 4303 are connected in parallel between the first sub-flow channel 4301 and the fourth sub-flow channel 4304. One end of the first sub-flow channel 4301 forms a liquid inlet interface for connection with the liquid inlet pipe connector 730. The other end of the first sub-flow channel 4301 is connected to one end of the second sub-flow channel 4302 and one end of the third sub-flow channel 4303. The other ends of the second sub-flow channel 4302 and the third sub-flow channel 4303 are both connected to one end of the fourth sub-flow channel 4304. The other end of the fourth sub-flow channel 4304 forms a liquid return interface for connection with the liquid return pipe connector 740. The second sub-flow channel 4302 and the third sub-flow channel 4303 are both approximately U-shaped.

[0133] For example Figure 15 As shown, Figure 15A schematic diagram of a third type of cold plate provided in this application embodiment is shown. In this embodiment, the flow channel 430 of the cold plate 400 includes a first sub-flow channel segment 431', a plurality of second sub-flow channel segments 432', and a third sub-flow channel segment 433'. The first sub-flow channel segment 431' forms a liquid inlet interface for connection with a liquid inlet pipe connector 730. The third sub-flow channel segment 433' forms a liquid return interface for connection with a liquid return pipe connector 740. The plurality of second sub-flow channel segments 432' are interconnected and connected between the first sub-flow channel segment 431' and the third sub-flow channel segment 433'. The plurality of second sub-flow channel segments 432' generally have a U-shaped structure, and each second sub-flow channel segment 432' is hexagonal in shape.

[0134] In other possible implementations, the second sub-flow channel segment 432' can also be in other shapes. For example, the second sub-flow channel segment 432' can be square, triangular, or pentagonal, etc. As another example, the second sub-flow channel segment 432' can also be elliptical or circular, etc.

[0135] Figure 15 In the illustrated scheme, the shapes of each second sub-flow channel segment 432' are identical. In other possible implementations, the multiple second sub-flow channel segments 432' may have at least partially different shapes.

[0136] Figure 6 , Figure 14 and Figure 15 The flow channel portion 430 of the cold plate 400 is illustrated only by way of example in three different structures. In other possible implementations, the flow channel portion 430 may have other variations, which will not be listed one by one.

[0137] The ordinal numbers "first" and "second," etc., used herein are only for describing the composition or structure of the same function in the technical solution. It is understood that the use of the aforementioned ordinal numbers "first" and "second," etc., does not constitute a limitation on the understanding of the technical solution for which protection is sought in this application.

[0138] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A charging gun, characterized in that, include: The bracket has a groove. A power terminal, which is disposed on the bracket, and the power terminal includes a main body segment located in the groove; The cold plate is a blown liquid-cooled plate, which is disposed on the opening side of the groove and is fixedly connected to the bracket. and An insulating thermally conductive pad, the insulating thermally conductive pad covering 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 being 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; The groove includes a bottom wall and two opposing side walls, and the main body includes a top wall facing away from the bottom wall and two opposing side walls. The insulating thermally conductive pad includes a first pad portion and two second pad portions. 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. 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. 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 trench; The main body section has a protruding ridge extending towards the bottom wall of the tank on the side facing the bottom wall of the tank. The side of the main body section facing the bottom wall of the tank includes two bottom wall surfaces, which are located on both sides of the protruding ridge. The bottom wall surfaces are far away from the bottom wall of the tank relative to the bottom surface of the protruding ridge. The insulating thermally conductive pad also includes two third pad portions, which are respectively connected to two second pad portions, and the third pad portions are located between the bottom wall surface portion and the bottom wall of the groove. The bottom surface of the ridge fits into the bottom wall of the groove.

2. The charging gun according to claim 1, characterized in that, The cold plate includes two substrates, which are fixedly connected. A flow channel is formed between the two substrates by blow molding. The flow channel has a liquid inlet and a liquid return interface.

3. The charging gun according to claim 2, characterized in that, The flow channel section includes several interconnected sub-flow channel segments, which may be linear, curved, or polygonal in shape.

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

5. The charging gun according to any one of claims 1-4, characterized in that, The cold plate and the bracket are fixedly connected by fasteners that pass through both.

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

7. The charging gun according to any one of claims 1-4, characterized in that, The charging gun includes multiple power terminals, each power terminal is provided with a cold plate and an insulating thermal pad, and the flow channels of the multiple cold plates are arranged in parallel.

8. A charging device, characterized in that, The invention includes a charging pile and a charging gun as described in any one of claims 1-7; the charging pile includes a liquid supply assembly, and the cold plate of the charging gun is connected to an inlet pipe and a return pipe, the inlet pipe being connected to the outlet end of the liquid supply assembly, and the return pipe being connected to the return end of the liquid supply assembly.

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