Charging gun and charging equipment

Abstract

The embodiment of the utility model provides a charging gun and charging equipment, and relates to the technical field of charging equipment. The charging gun comprises a power terminal, a connecting pipe and a power line. The power terminal comprises a first connecting part, and the first connecting part is of a tubular structure. The connecting pipe is sleeved with the first connecting part, and one end of the power line is located between the outer wall of the connecting pipe and the inner wall of the first connecting part and is pressed and fixed through the connecting pipe and the first connecting part. The power terminal is internally provided with a liquid cooling cavity, and the connecting pipe is communicated with the liquid cooling cavity. Therefore, efficient liquid cooling heat dissipation of the charging gun can be simply and conveniently realized.

Description

Technical Field

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

[0002] A charging gun is a connection device that transmits electrical energy from a charging station to an electric vehicle. After the charging gun is plugged into the electric vehicle, the charging station can charge the vehicle using the charging gun. With the rapid development of the electric vehicle industry, the battery capacity of electric vehicles is increasing, and increasing charging power to shorten charging time is one way to achieve fast charging. However, increasing charging power increases the heat dissipation of the charging gun, and excessively high temperatures can affect the reliability and other performance characteristics of the charging gun. Therefore, the heat dissipation efficiency of the charging gun limits the improvement of charging power.

[0003] Liquid cooling is one way to improve the heat dissipation efficiency of charging guns. How to achieve efficient liquid cooling of charging guns simply and conveniently has become an urgent problem to be solved in the field of charging equipment technology. Utility Model Content

[0004] This application provides a charging gun and charging device that can easily and conveniently achieve efficient liquid cooling for the charging gun.

[0005] A first aspect of this application provides a charging gun, which includes a power terminal, a connecting tube, and a power wire. The power terminal includes a first connecting portion, which is a tubular structure. The connecting tube is sleeved within the first connecting portion, and one end of the power wire is located between the outer wall of the connecting tube and the inner wall of the first connecting portion, and is pressed and fixed by the connecting tube and the first connecting portion. The power terminal has a liquid cooling cavity, and the connecting tube communicates with the liquid cooling cavity.

[0006] The charging gun provided in this application embodiment, by providing a connecting pipe, can easily connect the liquid cooling cavity inside the power terminal to the liquid supply component of the charging pile, thereby forming a cooling medium circulation loop for efficient liquid cooling of the power terminal. Furthermore, the clamping of the power line by the connecting pipe and the first connecting part facilitates the fixing and parallel connection of the power line to the power terminal, making the connection simple, convenient, and cost-effective. Moreover, the clamping and fixing of the power line by the connecting pipe and the first connecting part allows the cooling medium flowing through the connecting pipe to more effectively dissipate heat from the power line. Thus, efficient liquid cooling of the charging gun can be achieved simply, conveniently, and at low cost.

[0007] In some possible implementations, the power terminal has a connecting hole that connects the inner cavity of the first connection portion to the liquid cooling cavity, and the connecting pipe passes through the connecting hole, making it convenient for the connecting pipe to connect to the liquid cooling cavity. In addition, it also facilitates the insertion of a portion of the connecting pipe into the liquid cooling cavity to guide the cooling medium within the liquid cooling cavity.

[0008] In some possible implementations, the connecting tube is fixedly connected to the wall of the connecting hole. This makes the connecting tube and the power terminal more securely fixed, which is beneficial for a stable connection between the power line and the power terminal.

[0009] In some possible implementations, one end of the connecting pipe is located inside the liquid cooling cavity and is fixedly connected to the cavity wall. This facilitates the flow of the cooling medium within the liquid cooling cavity, directing it to the insertion portion of the power terminal, thereby achieving efficient heat dissipation from the high-temperature insertion portion. Furthermore, it allows for a more secure fixation between the connecting pipe and the power terminal, ensuring a stable connection between the power line and the power terminal.

[0010] In some possible implementations, the sidewall of the portion of the connecting pipe located within the liquid cooling cavity has a first flow hole, through which the connecting pipe communicates with the liquid cooling cavity. This facilitates simultaneous connection between the connecting pipe and the liquid cooling cavity while the end of the connecting pipe is fixedly connected to the cavity wall. Furthermore, the large flow area between the connecting pipe and the liquid cooling cavity promotes smooth flow of the cooling medium between them.

[0011] In some possible implementations, the power terminal further includes a second connecting portion, with one end of the first connecting portion connected to one end of the second connecting portion. The charging gun also includes a sleeve, which includes a first end and a second end. The first end is connected to the second connecting portion, and the first connecting portion is fitted inside the sleeve. A flow channel is provided between the first connecting portion and the sleeve. The connecting tube has a second flow hole located inside the first connecting portion, and the first connecting portion has a third flow hole connecting the second flow hole and the flow channel. Thus, the sleeve connection facilitates the connection between the power terminal and the liquid supply component of the charging pile, as well as the connection between the connecting tube and the liquid supply component of the charging pile, thereby facilitating liquid cooling of the power terminal. Furthermore, since the connection between the power terminal and the power line is located inside the sleeve, the cooling medium can flow through the connection between the power terminal and the power line, providing liquid cooling to the connection.

[0012] In some possible implementations, the first connecting portion includes a first part and a second part, with the second part located between the first part and the second connecting portion. The connecting pipe includes a first segment located within the first part and a second segment located within the second part. One end of the power line is located between the outer wall of the first segment and the inner wall of the first part, and is clamped and fixed by the first segment and the first part. A second flow passage is located in the second segment, and a third flow passage is located in the second part. An annular space exists between the second part and the second segment, and the third flow passage communicates with the second flow passage through the space. In this way, the clamping of the power line by the first connecting portion and the connecting pipe has minimal impact on the communication between the connecting pipe and the flow channel, facilitating communication between the connecting pipe and the flow channel, and allowing for smoother flow of the cooling medium between the connecting pipe and the flow channel.

[0013] In some possible implementations, the charging gun further includes a first liquid tube, which is sleeved outside the power line and connected to a second end. A first liquid-cooling channel is formed between the first liquid tube and the power line, and the through flow channel communicates with the first liquid-cooling channel. Thus, the sleeve can be connected to the liquid supply assembly via the first liquid tube, and the connecting pipe can be connected to the liquid supply assembly via the first liquid-cooling channel located outside the power line, facilitating liquid-cooled heat dissipation of the power terminals. Furthermore, the cooling medium within the first liquid-cooling channel can exchange heat with the power line outside the power line, thereby achieving heat dissipation of the power line.

[0014] In some possible implementations, the power line has a second liquid-cooled channel, and the connecting pipe communicates with the second liquid-cooled channel. This allows the connecting pipe to communicate with the liquid supply assembly via the second liquid-cooled channel within the power line, facilitating liquid-cooled heat dissipation from the power terminals. Furthermore, the cooling medium within the second liquid-cooled channel can exchange heat with the power line from its inner side, thereby achieving heat dissipation from the power line.

[0015] In some possible implementations, the charging gun also includes a liquid cooling pipe. A power cable is sleeved around the liquid cooling pipe, which has a second liquid cooling channel inside. A connecting pipe includes a third end, to which the liquid cooling pipe is connected, and the connecting pipe communicates with the second liquid cooling channel via the third end. This allows the liquid cooling pipe to support the power cable, and facilitates the routing of the power cable on the outside of the liquid cooling pipe, making it easier to form the second liquid cooling channel on the inside of the power cable. Furthermore, the liquid cooling pipe provides stable support for the power cable, ensuring the second liquid cooling channel remains unobstructed. Additionally, the connection of the liquid cooling pipe to the third end improves the stability of the cooling medium's flow between the second liquid cooling channel and the connecting pipe.

[0016] In some possible implementations, the third end is sleeved outside the liquid cooling pipe, and the inner wall of the third end is connected to the outer wall of the liquid cooling pipe. In this way, the connection between the third end and the liquid cooling pipe is less likely to affect the crimping of the power line by the connecting pipe and the first connecting part.

[0017] A 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 gun further includes a second liquid pipe, which communicates with the liquid-cooled cavity of the charging gun. The charging pile includes a power supply component and a liquid supply component. The power terminal of the charging gun is electrically connected to the power supply component via a power line of the charging gun. One of the inlet and outlet of the liquid supply component is connected to the second liquid pipe, and the other of the inlet and outlet of the liquid supply component is connected to the connecting pipe of the charging gun. 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 the power terminal of a charging gun provided in an embodiment of this application;

[0020] Figure 3 for Figure 2 A cross-sectional schematic diagram of the power terminal of the charging gun provided in the image;

[0021] Figure 4 for Figure 2 Another schematic diagram of the power terminal of the charging gun provided in the image;

[0022] Figure 5 for Figure 2 Another schematic diagram of the power terminal of the charging gun provided in the image;

[0023] Figure 6 A schematic diagram of a connecting pipe provided in an embodiment of this application;

[0024] Figure 7 for Figure 2 Another cross-sectional schematic diagram of the power terminal of the charging gun provided in the image;

[0025] Figure 8 A cross-sectional schematic diagram of a power terminal provided in an embodiment of this application;

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

[0027] Figure 10 for Figure 9 A cross-sectional diagram of the pin provided in the diagram;

[0028] Figure 11 A schematic diagram of an adapter provided in an embodiment of this application;

[0029] Figure 12 for Figure 11 Another schematic diagram of the adapter provided in the document;

[0030] Figure 13 for Figure 11 A cross-sectional schematic diagram of the adapter provided in the document;

[0031] Figure 14 for Figure 8 An exploded view of the power terminals provided in the diagram;

[0032] Figure 15 A cross-sectional schematic diagram of a first clamping sleeve provided in an embodiment of this application;

[0033] Figure 16 A schematic diagram of a sleeve provided in an embodiment of this application;

[0034] Figure 17 for Figure 16 A schematic diagram of a cross-section of the provided sleeve;

[0035] Figure 18 A schematic diagram of a second clamping sleeve provided in an embodiment of this application;

[0036] Figure 19 for Figure 2 An exploded view of the power terminal of the charging gun provided.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Charging gun; 11. Gun head; 12. Cable; 20. Charging station; 21. Power supply assembly; 22. Liquid supply assembly;

[0039] 100. Power terminal; 110. Pin; 111. Connector; 112. Fixing structure; 112a. Fixing groove; 120. Adapter; 121. Second connecting part; 121a. Positioning sub-part; 121b. Connecting sub-part; 122. First connecting part; 122a. First part; 122b. Second part; 123. Fourth connecting part; 123a. First interface; 124. Second interface; 130. Second connector;

[0040] 200. Second liquid tube;

[0041] 300, Sleeve; 310, First end; 311, Sealing groove; 312, Second locking part; 320, Second end; 321, Third connecting part; 322, First connector; 322a, First inclined surface; 330, Assembly groove;

[0042] 400. Power cable; 410. First liquid pipe; 420. Power line; 430. Liquid cooling pipe;

[0043] 510. Liquid cooling cavity; 511. First sub-cavity; 512. Second sub-cavity; 520. Flow port; 530. Connecting hole; 540. Flow channel; 550. Liquid cooling channel; 551. First liquid cooling channel; 552. Second liquid cooling channel; 561. Second flow hole; 562. Third flow hole; 563. First flow hole; 570. Spacing space;

[0044] 610. First clamping sleeve; 611. First locking part; 620. Second clamping sleeve; 621. Third locking part; 630. Seal;

[0045] 700. Temperature sensor;

[0046] 800, connecting pipe; 810, first section; 820, second section; 830, third end; 840, fourth end. Detailed Implementation

[0047] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of a charging device provided in an embodiment of this application.

[0049] like Figure 1 As shown in the illustration, this application provides a charging device for charging electric vehicles. The charging device includes a charging pile 20 and a charging gun 10, with the charging pile 20 connected to the charging gun 10. The charging pile 20 provides electrical energy, and the charging gun 10 is a connection device that transmits electrical energy from the charging pile 20 to the electric vehicle. After the charging gun 10 is plugged into the electric vehicle, the charging pile 20 can charge the electric vehicle through the charging gun 10. In some examples, this charging device can be a supercharger, with the charging power of a single charging gun 10 being greater than or equal to 480 kW; for example, the charging power of a single charging gun 10 can be 800 kW (1000 A, 800 V).

[0050] The charging gun 10 includes a gun head 11 and a cable 12, with the two ends of the cable 12 connected to the gun head 11 and the charging station 20, respectively.

[0051] The charging pile 20 includes a power supply component 21, which is electrically connected to the gun head 11 via a cable 12. The power supply component 21 can be electrically connected to the mains power through the charging host. The charging host can convert the current provided by the mains power into the current required for charging the electric vehicle. The power supply component 21 can deliver the current required for charging the electric vehicle to the gun head 11.

[0052] The charging station 20 also includes a liquid supply component 22, which is connected to the gun head 11 via a cable 12. The liquid supply component 22, the cable 12, and the gun head 11 form a cooling medium circulation loop. The liquid supply component 22 can provide cooling medium to the cable 12 and the gun head 11. After absorbing heat in the charging gun 10, the cooling medium can flow back to the liquid supply component 22 to achieve liquid cooling of the charging gun 10.

[0053] Figure 2 This is a schematic diagram of the power terminal of a charging gun provided in an embodiment of this application.

[0054] like Figure 2 As shown, the gun head 11 includes a power terminal 100. The power supply component 21 is electrically connected to the power terminal 100 via a cable 12. The power supply component 21 can supply the current required for charging the electric vehicle to the power terminal 100. When the gun head 11 is plugged into the electric vehicle, the power terminal 100 makes electrical contact with the corresponding terminal on the electric vehicle.

[0055] The nozzle 11 includes multiple power terminals 100, one or more of which are positive power terminals and one or more of which are negative power terminals. The positive power terminal is electrically connected to the positive terminal of the power supply component 21 via a cable 12, and the negative power terminal is electrically connected to the negative terminal of the power supply component 21 via a cable 12. For example, the nozzle 11 may include two power terminals 100, one of which is a positive power terminal and the other is a negative power terminal.

[0056] Cable 12 includes a power cable 400, one end of which is electrically connected to the power supply component 21, and the other end of which is electrically connected to a power terminal 100, such that the power supply component 21 is electrically connected to the power terminal 100 via the power cable 400. For example, cable 12 includes multiple power cables 400 corresponding one-to-one with each power terminal 100, and each power cable 400 is connected to its corresponding power terminal 100. The power terminal 100 is electrically connected to the power supply component 21 via its corresponding power cable 400. For instance, the positive power terminal is electrically connected to the positive terminal of the power supply component 21 via its corresponding power cable 400, and the negative power terminal is electrically connected to the negative terminal of the power supply component 21 via its corresponding power cable 400.

[0057] Figure 3 for Figure 2 A cross-sectional schematic diagram of the power terminal of the charging gun provided. Figure 3 The cross section is the axis of the second connector 130 at a power terminal 100 of the charging gun, and the cross section where the axis of the power terminal 100 is located. Figure 3The direction pointed to by the dotted-dash arrow in the figure is the flow direction of the cooling medium when the second liquid pipe 200 is connected to the outlet of the liquid supply component 22 and the liquid cooling channel 550 is connected to the inlet of the liquid supply component 22.

[0058] like Figure 2 , Figure 3 As shown, cable 12 also includes a second liquid pipe 200, and the power terminal 100 has a liquid-cooled cavity 510. The power cable 400 has a liquid-cooled flow channel 550. The second liquid pipe 200 is connected to the liquid-cooled cavity 510, and the liquid-cooled flow channel 550 is connected to the liquid-cooled cavity 510. One of the inlet and outlet of the liquid supply assembly 22 is connected to the second liquid pipe 200, and the other of the inlet and outlet of the liquid supply assembly 22 is connected to the liquid-cooled flow channel 550. The second liquid pipe 200, the liquid-cooled cavity 510, and the liquid-cooled flow channel 550 form a cooling medium circulation loop. The cooling medium provided by the liquid supply assembly 22 can provide liquid cooling heat dissipation to the power terminal 100 and the power cable 400. At this time, the cooling medium in the liquid-cooled cavity 510 and the power terminal 100 can have a shorter heat exchange path and a larger heat exchange surface, resulting in higher heat dissipation efficiency of the cooling medium for the power terminal 100.

[0059] For example, the cooling medium can be an insulating medium such as cooling oil.

[0060] like Figure 3 As shown, in some examples, the second liquid pipe 200 is connected to the outlet of the liquid supply assembly 22, and the liquid cooling channel 550 is connected to the inlet of the liquid supply assembly 22. In this case, the outlet of the second liquid pipe 200 is connected to the liquid cooling chamber 510, and the liquid cooling chamber 510 is connected to the inlet of the liquid cooling channel 550. The cooling medium provided by the liquid supply assembly 22 can first flow into the liquid cooling chamber 510 through the second liquid pipe 200. After dissipating heat from the power terminal 100 within the liquid cooling chamber 510, the cooling medium then flows into the liquid cooling channel 550 to dissipate heat from the power cable 400, and finally flows back to the liquid supply assembly 22 through the liquid cooling channel 550. Thus, the cooling medium provided by the liquid supply assembly 22 first dissipates heat from the power terminal 100, which has a higher heat generation and temperature, resulting in better heat dissipation of the power terminal 100 and improving the charging power of the charging gun 10.

[0061] In other examples, the second liquid pipe 200 is connected to the inlet of the liquid supply assembly 22, and the liquid cooling channel 550 is connected to the outlet of the liquid supply assembly 22. In this case, the inlet of the second liquid pipe 200 is connected to the liquid cooling chamber 510, and the liquid cooling chamber 510 is connected to the outlet of the liquid cooling channel 550. The cooling medium provided by the liquid supply assembly 22 can first flow into the liquid cooling channel 550 to dissipate heat from the power cable 400. After dissipating heat from the power cable 400, it then flows into the liquid cooling chamber 510 to dissipate heat from the power terminal 100. After dissipating heat from the power terminal 100, it flows back to the liquid supply assembly 22 through the second liquid pipe 200. Thus, the cooling medium provided by the liquid supply assembly 22 first dissipates heat from the power cable 400, which has lower heat generation and lower temperature, and then dissipates heat from the power terminal 100, which has higher heat generation and higher temperature, resulting in higher utilization efficiency of the cooling medium.

[0062] like Figure 2 As shown, in some examples, the cable 12 includes multiple second liquid tubes 200 corresponding one-to-one with the power terminals 100. Each second liquid tube 200 is connected to the corresponding power terminal 100 and is connected to the liquid cooling cavity 510 of the corresponding power terminal 100. That is, different power terminals 100 are connected to different second liquid tubes 200, and the liquid cooling cavities 510 of different power terminals 100 are fed or discharged through different second liquid tubes 200.

[0063] In other examples, multiple power terminals 100 are connected to the same second liquid pipe 200, and the liquid-cooled cavities 510 of the multiple power terminals 100 are connected to the same second liquid pipe 200. That is, the liquid-cooled cavities 510 of multiple different power terminals 100 can enter or exit liquid through the same second liquid pipe 200. In this case, the multiple power terminals 100 can be connected to the same second liquid pipe 200 through a connector with multiple ports. For example, a second liquid pipe 200 can be connected to two power terminals 100 through a tee connector.

[0064] like Figure 3 As shown, for example, the power terminal 100 has a flow port 520 communicating with the liquid cooling cavity 510, and the second liquid pipe 200 is connected to the flow port 520, so that the second liquid pipe 200 is connected to the liquid cooling cavity 510 through the flow port 520.

[0065] For example, the power cable 400 includes a power line 420 and a first liquid pipe 410. The first liquid pipe 410 is sleeved outside the power line 420 and has a liquid cooling channel 550 inside. One end of the first liquid pipe 410 is connected to the liquid supply assembly 22, and the other end is connected to the power terminal 100, so that both ends of the liquid cooling channel 550 are connected to the liquid cooling cavity 510 and the liquid supply assembly 22, respectively. One end of the power line 420 is electrically connected to the power supply assembly 21, and the other end is electrically connected to the power terminal 100, so that the power terminal 100 is electrically connected to the power supply assembly 21 through the power line 420. The cooling medium in the liquid cooling channel 550 can dissipate heat from the power line 420. The cooling medium in the liquid cooling cavity 510 and the power line 420 can have a short heat exchange path and a large heat exchange surface, resulting in high heat dissipation efficiency of the cooling medium on the power line 420.

[0066] In some examples, the liquid cooling channel 550 includes a first liquid cooling channel 551 located between the first liquid pipe 410 and the power line 420. That is, there is a first liquid cooling channel 551 between the first liquid pipe 410 and the power line 420. The first liquid cooling channel 551 is located outside the power line 420. The two ends of the first liquid cooling channel 551 are respectively connected to the liquid cooling cavity 510 and the liquid supply assembly 22. The cooling medium in the first liquid cooling channel 551 can exchange heat with the power line 420 outside the power line 420 to achieve heat dissipation of the power line 420.

[0067] For example, there may be one or more first liquid cooling channels 551 between the power line 420 and the first liquid pipe 410.

[0068] For example, there is a gap between the power line 420 and the inner wall of the first liquid pipe 410 to form a first liquid cooling channel 551 between the power line 420 and the first liquid pipe 410.

[0069] For example, the inner wall of the first liquid pipe 410 may have a ridge structure or a groove structure to form a first liquid cooling channel 551 between the power line 420 and the first liquid pipe 410.

[0070] For example, the outer peripheral surface of the power line 420 may have a ridge structure or a groove structure to form a first liquid cooling channel 551 between the power line 420 and the first liquid pipe 410.

[0071] like Figure 3As shown, in some examples, the liquid cooling channel 550 includes a second liquid cooling channel 552 located within the power line 420; that is, the power line 420 has a second liquid cooling channel 552. The two ends of the second liquid cooling channel 552 are respectively connected to the liquid cooling cavity 510 and the liquid supply assembly 22. The cooling medium within the second liquid cooling channel 552 can exchange heat with the power line 420 from the inside of the power line 420 to achieve heat dissipation from the power line 420.

[0072] In some examples, the power cable 400 also includes a liquid cooling pipe 430, with the power line 420 sleeved around it. The liquid cooling pipe 430 has a second liquid cooling channel 552 inside. The liquid cooling pipe 430 supports the power line 420, and it is convenient to lay the power line 420 on the outside of the liquid cooling pipe 430, making it easier to form the second liquid cooling channel 552 on the inside of the power line 420. The liquid cooling pipe 430 provides stable support for the power line 420, ensuring the second liquid cooling channel 552 remains unobstructed.

[0073] For example, the power line 420 can be attached to the surface of the liquid cooling pipe 430.

[0074] For example, the liquid cooling pipe 430 is made of a material with good thermal conductivity so that the cooling medium in the second liquid cooling channel 552 can dissipate heat from the power line 420.

[0075] In other examples, springs or other supports can be used to replace the liquid cooling pipe 430. These supports can lift the power line 420 to form a second liquid cooling channel 552 within the power line 420.

[0076] like Figure 3 As shown, exemplarily, the liquid cooling channel 550 includes a first liquid cooling channel 551 and a second liquid cooling channel 552, so that the cooling medium can dissipate heat from the power line 420 on both the inner and outer sides of the power line 420. The heat exchange surface between the cooling medium and the power line 420 is large, and the cooling medium has a good heat dissipation effect on the power line 420.

[0077] like Figure 3 As shown, for example, the power terminal 100 includes a second connector 130, which is located at the flow port 520 and communicates with the liquid cooling cavity 510 through the flow port 520. The second liquid pipe 200 is connected to the second connector 130 and communicates with the second connector 130, so that the second liquid pipe 200 communicates with the liquid cooling cavity 510 through the second connector 130 and the flow port 520.

[0078] For example, the second connector 130 can be a pagoda connector to facilitate quick connection and disconnection between the second liquid line 200 and the power terminal 100.

[0079] like Figure 3As shown, the power terminal 100 includes a plug-in portion 111, a second connecting portion 121, and a first connecting portion 122. The second connecting portion 121 is located between the plug-in portion 111 and the first connecting portion 122, and one end of the first connecting portion 122 is connected to one end of the second connecting portion 121. The first connecting portion 122 has a tubular structure. When the nozzle 11 is plugged into an electric vehicle, the plug-in portion 111 makes electrical contact with the corresponding terminal on the electric vehicle.

[0080] The charging gun 10 also includes a connecting pipe 800, which is sleeved inside the first connecting part 122. One end of the power line 420 is located between the outer wall of the connecting pipe 800 and the inner wall of the first connecting part 122, and is pressed and fixed by the connecting pipe 800 and the first connecting part 122. The connecting pipe 800 communicates with the liquid cooling cavity 510 and also communicates with the liquid cooling channel 550, so that the liquid cooling channel 550 communicates with the liquid cooling cavity 510 through the connecting pipe 800. One of the inlet and outlet of the liquid supply assembly 22 is connected to the second liquid pipe 200, and the other of the inlet and outlet of the liquid supply assembly 22 is connected to the connecting pipe 800 through the liquid cooling channel 550. The liquid supply assembly 22, the liquid cooling channel 550, the connecting pipe 800, the liquid cooling cavity 510, and the second liquid pipe 200 are used to form a cooling medium circulation loop.

[0081] In this way, by setting the connecting pipe 800, the liquid cooling cavity 510 inside the power terminal 100 can be easily connected to the liquid cooling channel 550 of the cable 12, facilitating the formation of a cooling medium circulation loop for efficient liquid cooling of the power terminal 100. Furthermore, the clamping of the power line 420 by the connecting pipe 800 and the first connecting part 122 facilitates the fixing and electrical connection between the power line 420 and the power terminal 100. The connection between the power line 420 and the power terminal 100 is simple, convenient, and low-cost. In summary, the solution in this embodiment can achieve efficient liquid cooling of the charging gun in a simple, convenient, and low-cost manner.

[0082] In addition, the connection between the power terminal 100 and the corresponding power cable 400 can be achieved through the connecting pipe 800, and the connection between the liquid cooling cavity 510 of the power terminal 100 and the liquid cooling channel 550 of the corresponding power cable 400 can be achieved. This allows different power terminals 100 to be in different cooling medium circulation loops, enabling independent heat dissipation for different power terminals 100, and making it less likely for short circuits to occur between the positive and negative terminals of the charging gun 10.

[0083] like Figure 2 , Figure 3As shown, the charging gun 10 also includes a sleeve 300, which includes a first end 310 and a second end 320. The first end 310 is connected to the second connecting part 121, and the first connecting part 122 is sleeved inside the sleeve 300. That is, both the first connecting part 122 and the connecting pipe 800 are sleeved inside the sleeve 300. The first liquid pipe 410 is connected to the second end 320, and the connecting pipe 800 is connected to the liquid cooling channel 550, so that the liquid cooling cavity 510 is connected to the liquid cooling channel 550 through the connecting pipe 800.

[0084] In this way, by setting the sleeve 300 to connect the first liquid pipe 410 to the power terminal 100, and by connecting the liquid cooling cavity 510 to the liquid cooling channel 550 through the connecting pipe 800 sleeved inside the sleeve 300, it is easy to achieve a sealed connection between the first liquid pipe 410 and the power terminal 100, and an interconnection between the liquid cooling channel 550 and the liquid cooling cavity 510, thereby facilitating liquid cooling of the power terminal 100. In addition, the connection between the power terminal 100 and the power line 420 is located inside the sleeve 300, and the cooling medium can flow through the connection between the power terminal 100 and the power line 420, so that the cooling medium can perform liquid cooling of the connection between the power line 420 and the power terminal 100.

[0085] For example, after one end of the power line 420 is passed between the inner wall of the first connecting part 122 and the outer wall of the connecting tube 800, a force is applied to the outside of the first connecting part 122 to deform the first connecting part 122 so that one end of the power line 420 is pressed and fixed by the connecting tube 800 and the first connecting part 122.

[0086] In the example where the liquid cooling channel 550 includes a first liquid cooling channel 551, the connecting pipe 800 is connected to the first liquid cooling channel 551. That is, the liquid cooling cavity 510 is connected to the first liquid cooling channel 551 through the connecting pipe 800. This facilitates a simple and convenient connection between the power line 420 and the power terminal 100, while also enabling the connection between the liquid cooling cavity 510 and the first liquid cooling channel 551, thereby facilitating liquid cooling of the power line 420 from the outside.

[0087] In the example where the liquid cooling channel 550 includes a second liquid cooling channel 552, the connecting pipe 800 is connected to the second liquid cooling channel 552. That is, the liquid cooling cavity 510 is connected to the second liquid cooling channel 552 through the connecting pipe 800. This facilitates a simple and convenient connection between the power line 420 and the power terminal 100, while simultaneously enabling the connection between the liquid cooling cavity 510 and the second liquid cooling channel 552, thereby facilitating liquid cooling of the power line 420 from within.

[0088] For example, the first connecting part 122 and the connecting tube 800 can be coaxial.

[0089] For example, the connecting tube 800 is fixedly connected to the portion of the power terminal 100 located on the side of the first connecting portion 122 away from the power line 420. For instance, the connecting tube 800 can be fixedly connected to the portion of the power terminal 100 located on the side of the first connecting portion 122 away from the power line 420 by means of welding, snap-fitting, threaded connection, interference fit, etc. This makes the connection between the connecting tube 800 and the power terminal 100 more secure, facilitating a stable connection between the power line 420 and the power terminal 100.

[0090] For example, the plug-in portion 111, the second connection portion 121 and the first connection portion 122 are arranged along the length direction of the power terminal 100.

[0091] For example, the liquid cooling cavity 510 is located on the side of the first connection portion 122 away from the power line 420.

[0092] For example, the liquid cooling cavity 510 is located at the end of the second connection portion 121 away from the first connection portion 122.

[0093] For example, a portion of the liquid cooling cavity 510 is located in the plug-in portion 111 to facilitate liquid cooling of the plug-in portion 111, which generates a large amount of heat and has a high temperature.

[0094] In some possible implementations, the second end 320 includes a third connecting portion 321 and a first connector 322, with the third connecting portion 321 located between the first connector 322 and the first end 310. The first liquid tube 410 is sleeved on the outside of the first connector 322.

[0095] The charging gun 10 also includes a first clamping sleeve 610, which is sleeved on the outside of the first liquid tube 410 and the third connecting part 321. The first clamping sleeve 610 is fixedly connected to the third connecting part 321, and the first clamping sleeve 610 presses the first liquid tube 410 onto the first connector 322 so that the first liquid tube 410 and the first connector 322 are sealed together.

[0096] In this way, it is relatively easy to achieve a sealed connection between the first liquid pipe 410 and the sleeve 300.

[0097] For example, the first clamping sleeve 610 is detachably connected to the third connecting part 321.

[0098] In some examples, the first clamping sleeve 610 may be threadedly connected to the third connecting part 321.

[0099] In other examples, the first clamping sleeve 610 can engage with the third connecting part 321.

[0100] In some possible implementations, the second connecting portion 121 includes a positioning sub-portion 121a and a connecting sub-portion 121b. The positioning sub-portion 121a is located between the connecting sub-portion 121b and the first connecting portion 122. The first end 310 is sleeved on the outer side of the positioning sub-portion 121a, and the outer peripheral surface of the positioning sub-portion 121a is used to abut against the inner wall of the first end 310 to achieve alignment and positioning of the first end 310 with the power terminal 100.

[0101] The charging gun 10 also includes a second clamping sleeve 620 and a sealing element 630. The sealing element 630 is disposed between the first end 310 and the connecting sub-part 121b. The second clamping sleeve 620 is sleeved on the outside of the sleeve 300 and the connecting sub-part 121b. The second clamping sleeve 620 is fixedly connected to the connecting sub-part 121b. The second clamping sleeve 620 is pressed against the sleeve 300 and causes the first end 310 and the connecting sub-part 121b to press the sealing element 630 tightly, so that the first end 310 and the connecting sub-part 121b are sealed together.

[0102] In this way, it is easier to achieve a sealed connection between the sleeve 300 and the power terminal 100. Furthermore, the positioning sub-part 121a facilitates easier assembly of the sleeve 300 and the power terminal 100. Additionally, the positioning sub-part 121a limits the movement of the sleeve 300 relative to the power terminal 100, resulting in better stability after the connection between the sleeve 300 and the power terminal 100.

[0103] For example, both the positioning sub-part 121a and the connecting sub-part 121b are cylindrical structures. The positioning sub-part 121a, the connecting sub-part 121b and the sleeve 300 are coaxial. The outer diameter of the positioning sub-part 121a is smaller than the outer diameter of the connecting sub-part 121b.

[0104] For example, the sleeve 300 and the first connecting part 122 can be coaxial, that is, the second connecting part 121, the first connecting part 122 and the sleeve 300 can be coaxial.

[0105] For example, the second clamping sleeve 620 is detachably connected to the connecting part 121b.

[0106] In some examples, the second clamping sleeve 620 can be threadedly connected to the connecting part 121b.

[0107] In other examples, the second clamping sleeve 620 can engage with the connecting part 121b.

[0108] For example, the first connecting part 122 is clearance-fitted with the sleeve 300, that is, there is a gap between the first connecting part 122 and the sleeve 300, which makes it easier to assemble the sleeve 300 with the power terminal 100. In addition, it also facilitates the formation of a flow channel between the first connecting part 122 and the sleeve 300.

[0109] In some possible implementations, a flow channel 540 is provided between the first connecting portion 122 and the sleeve 300, the connecting pipe 800 has a second flow hole 561 located inside the first connecting portion 122, the first connecting portion 122 has a third flow hole 562, the third flow hole 562 connects the second flow hole 561 and the flow channel 540, and the flow channel 540 is connected to the liquid cooling channel 550 through the second end 320.

[0110] In this way, the connection between the power line 420 and the power terminal 100 is simple and convenient, while also facilitating the connection between the connecting pipe 800 and the liquid cooling channel 550.

[0111] In some examples where the liquid cooling channel 550 includes a first liquid cooling channel 551, the flow channel 540 can be connected to the first liquid cooling channel 551 through the second end 320, so that the connection between the connecting pipe 800 and the first liquid cooling channel 551 can be realized while the connection between the power line 420 and the power terminal 100 is simple and convenient.

[0112] In some examples where the liquid cooling channel 550 includes a second liquid cooling channel 552, the flow channel 540 can be connected to the second liquid cooling channel 552 through the second end 320. For example, the power line 420 includes a bundle of multiple wires attached to the surface of the liquid cooling pipe 430, with the liquid cooling pipe 430 and the connecting pipe 800 spaced apart. The flow channel 540 can be connected to the second liquid cooling channel 552 through the gaps between the multiple wires located between the liquid cooling pipe 430 and the connecting pipe 800. This facilitates a simple and convenient connection between the power line 420 and the power terminal 100 while simultaneously enabling the connection between the connecting pipe 800 and the second liquid cooling channel 552.

[0113] Figure 4 for Figure 2 Another schematic diagram of the power terminal of the charging gun provided. Figure 5 for Figure 2 Another schematic diagram of the power terminal of the charging gun provided.

[0114] like Figure 4 , Figure 5 As shown, in some possible embodiments, the first connecting portion 122 includes a first portion 122a and a second portion 122b, the second portion 122b being located between the first portion 122a and the second connecting portion 121, and the third flow hole 562 being located in the second portion 122b, that is, the third flow hole 562 being located between the first portion 122a and the second connecting portion 121.

[0115] When the second connecting portion 121 includes a connecting sub-portion 121b and a positioning sub-portion 121a, the second portion 122b is connected to the positioning sub-portion 121a.

[0116] Figure 6 A schematic diagram of a connecting pipe provided in an embodiment of this application. Figure 7 for Figure 2 Another cross-sectional schematic diagram of the power terminal of the charging gun provided in the image. Figure 7 The cross-section in the diagram is the axis of the second connector at one of the power terminals of the charging gun, and the cross-section where the axis of the power terminal is located.

[0117] like Figure 6 , Figure 7 As shown, the connecting pipe 800 includes a first section 810 located within a first part 122a and a second section 820 located within a second part 122b. One end of the power line 420 is located between the outer wall of the first section 810 and the inner wall of the first part 122a, and is pressed and fixed by the first section 810 and the first part 122a. The second flow hole 561 is located in the second section 820. There is an annular space 570 between the second part 122b and the second section 820. The third flow hole 562 communicates with the second flow hole 561 through the space 570.

[0118] In this way, the clamping of the power line 420 by the first connecting part 122 and the connecting pipe 800 has little impact on the connection between the connecting pipe 800 and the flow channel 540, making it easier to connect the connecting pipe 800 and the flow channel 540, and the cooling medium flows more smoothly between the connecting pipe 800 and the flow channel 540.

[0119] For example, the inner diameter of the first portion 122a may be smaller than the inner diameter of the second portion 122b, so as to form an annular gap space 570 between the second portion 122b and the second segment 820.

[0120] In some examples where the power cable 400 also includes a liquid cooling pipe 430, the connecting pipe 800 includes a third end 830, the liquid cooling pipe 430 is connected to the third end 830, and the connecting pipe 800 is connected to the second liquid cooling channel 552 through the third end 830.

[0121] In this way, while it is relatively easy to form the second liquid cooling channel 552 and keep the second liquid cooling channel 552 unobstructed, the connection between the power cable 400 and the power terminal 100 is more stable, and the flow of the cooling medium between the second liquid cooling channel 552 and the connecting pipe 800 is more stable.

[0122] For example, the third end 830 and the liquid cooling pipe 430 can be connected by interference fit, bonding, welding or other methods.

[0123] In some possible implementations, the third end 830 is sleeved outside the liquid cooling pipe 430, and the inner wall of the third end 830 is connected to the outer wall of the liquid cooling pipe 430.

[0124] In this way, the connection between the third end 830 and the liquid cooling pipe 430 is less likely to affect the crimping of the connecting pipe 800 and the first connecting part 122 to the power line 420.

[0125] For example, a portion of the connecting tube 800 is located on the side of the first connecting portion 122 away from the second connecting portion 121, that is, the third end 830 extends beyond the first connecting portion 122. This makes it easier to connect the third end 830 to the liquid cooling tube 430. In addition, it also facilitates inserting one end of the power line 420 into the gap between the first connecting portion 122 and the connecting tube 800.

[0126] For example, the power terminal 100 has a communication hole 530 that connects the inner cavity of the first connection portion 122 to the liquid cooling cavity 510, and a connecting pipe 800 is provided at the communication hole 530 so that the liquid cooling cavity 510 can be connected to the liquid cooling channel 550 through the connecting pipe 800.

[0127] For example, at least a portion of the connecting hole 530 is located in the second connecting portion 121.

[0128] In some possible implementations, the connecting pipe 800 passes through the connecting hole 530, making it easier for the connecting pipe 800 to connect to the liquid cooling cavity 510. In addition, it also facilitates the insertion of a portion of the connecting pipe 800 into the liquid cooling cavity 510 to guide the cooling medium within the liquid cooling cavity 510.

[0129] In some examples, the connecting pipe 800 is fixedly connected to the wall of the connecting hole 530, that is, the connecting pipe 800 is fixedly connected to the second connecting part 121.

[0130] This makes the connecting tube 800 and the power terminal 100 more securely fixed, which is conducive to the stable connection between the power line 420 and the power terminal 100.

[0131] In some examples, the connecting tube 800 is threaded to the wall of the connecting hole 530, which makes it easier to connect the connecting tube 800 to the power terminal 100 and facilitates a stable connection between the power terminal 100 and the connecting tube 800 at high temperatures.

[0132] In some examples, the connecting tube 800 is interference-fitted with the wall of the connecting hole 530, which makes it easier to connect the connecting tube 800 to the power terminal 100 and facilitates a stable connection between the power terminal 100 and the connecting tube 800 at high temperatures.

[0133] In some possible implementations, one end of the connecting pipe 800 is located inside the liquid cooling cavity 510, that is, a portion of the connecting pipe 800 is located inside the liquid cooling cavity 510, so as to facilitate the flow of the cooling medium inside the liquid cooling cavity 510, so as to guide the cooling medium to the plug-in portion 111, thereby achieving efficient heat dissipation of the plug-in portion 111 with a high temperature.

[0134] For example, the connecting pipe 800 also includes a fourth end 840, the third end 830 and the fourth end 840 being the two ends of the extending direction of the connecting pipe 800, the fourth end 840 being located inside the liquid cooling cavity 510, and the third end 830 being located outside the liquid cooling cavity 510.

[0135] In some possible implementations, one end of the connecting pipe 800 is located inside the liquid cooling cavity 510 and is fixedly connected to the cavity wall of the liquid cooling cavity 510, that is, the fourth end 840 is fixedly connected to the cavity wall of the liquid cooling cavity 510.

[0136] This makes the connecting tube 800 and the power terminal 100 more securely fixed, which is conducive to the stable connection between the power line 420 and the power terminal 100.

[0137] In some possible implementations, the sidewall of the portion of the connecting pipe 800 located within the liquid cooling cavity 510 has a first flow hole 563, through which the connecting pipe 800 communicates with the liquid cooling cavity 510.

[0138] This facilitates the connection between the connecting pipe 800 and the liquid cooling cavity 510 while the fourth end 840 is fixedly connected to the cavity wall of the liquid cooling cavity 510. In addition, the connecting pipe 800 and the liquid cooling cavity 510 have a large flow area, which is conducive to the smooth flow of the cooling medium between the connecting pipe 800 and the liquid cooling cavity 510.

[0139] For example, the fourth end 840 is fixedly connected to the cavity wall of the liquid cooling cavity 510 on the side away from the connecting hole 530.

[0140] For example, the fourth end 840 is located inside the plug-in portion 111, and the fourth end 840 is fixedly connected to the plug-in portion 111.

[0141] For example, the first flow passage 563 is located near the fourth end 840 to facilitate the guidance of the cooling medium to the liquid cooling cavity 510 away from the connecting hole 530.

[0142] For example, the first flow hole 563 is located inside the insertion part 111, and the first flow hole 563 is located at the end of the liquid cooling cavity 510 away from the connecting hole 530.

[0143] Figure 8 This is a cross-sectional schematic diagram of a power terminal provided in an embodiment of this application. Figure 8 The cross-section in the diagram is the axis of the second connector at one of the power terminals of the charging gun, and the cross-section where the axis of the power terminal is located.

[0144] like Figure 7 , Figure 8As shown, in some possible embodiments, a fixing structure 112 is provided on the cavity wall of the liquid cooling cavity 510, and the fourth end 840 is fixedly connected to the fixing structure 112 so as to achieve a stable connection between the fourth end 840 and the power terminal 100.

[0145] For example, the fixing structure 112 is provided on the cavity wall of the liquid cooling cavity 510 on the side away from the connecting hole 530.

[0146] In some examples, the fixing structure 112 is a fixing groove 112a, and the fourth end 840 passes through the fixing groove 112a and is fixedly connected to the groove wall of the fixing groove 112a.

[0147] In this way, it is easier to form a fixing groove 112a on the cavity wall of the liquid cooling cavity 510, which facilitates the fixed connection between the fourth end 840 and the power terminal 100.

[0148] In some examples, the fourth end 840 can be threaded to the wall of the fixed groove 112a, which makes it easier to connect the fourth end 840 to the power terminal 100 and facilitates a stable connection between the fourth end 840 and the power terminal 100 at high temperatures.

[0149] In some examples, the fourth end 840 can be interference-fitted with the wall of the fixed groove 112a, which makes it easier to connect the fourth end 840 to the power terminal 100 and facilitates a stable connection between the fourth end 840 and the power terminal 100 at high temperatures.

[0150] In other examples, the fixing structure 112 may be a fixing post (not shown), which passes through the fourth end 840 and is fixedly connected to the outer wall of the fixing post.

[0151] In some examples, the fourth end 840 can be threaded to the outer wall of the fixed post, which makes it easier to connect the fourth end 840 to the power terminal 100 and facilitates a stable connection between the fourth end 840 and the power terminal 100 at high temperatures.

[0152] In some examples, the fourth terminal 840 can be interference-fitted with the fixed post, which makes it easier to connect the fourth terminal 840 to the power terminal 100 and facilitates a stable connection between the fourth terminal 840 and the power terminal 100 at high temperatures.

[0153] In some other possible implementations, one end of the connecting pipe 800 can also be fixedly connected to the end face of one end of the first connecting part 122 by means of bonding, welding or other methods. In this case, the connecting pipe 800 is located outside the liquid cooling cavity 510.

[0154] like Figure 8As shown, for example, the flow port 520 is located between the insertion part 111 and the second connection part 121, and the flow port 520, the second connector 130 and the second liquid tube 200 are located outside the sleeve 300.

[0155] For example, the power terminal 100 also includes a fourth connection portion 123, which is located between the plug portion 111 and the second connection portion 121. The flow port 520 is located in the fourth connection portion 123, and the second connector 130 is fixedly connected to the fourth connection portion 123.

[0156] This facilitates the connection between the second liquid pipe 200 and the power terminal 100 outside the sleeve 300, making the connection between the second liquid pipe 200 and the power terminal 100 more convenient.

[0157] For example, a portion of the liquid cooling cavity 510 is located in the fourth connection portion 123 to facilitate communication between the flow port 520 and the liquid cooling cavity 510.

[0158] Figure 9 A schematic diagram of a pin provided in an embodiment of this application. Figure 10 for Figure 9 A cross-sectional schematic diagram of the pins provided. Figure 10 The cross section in the diagram is the section containing the axis of the pin.

[0159] like Figure 9 , Figure 10 As shown, in some possible embodiments, the power terminal 100 includes a pin 110, the pin 110 includes a plug portion 111, and the liquid cooling cavity 510 includes a first sub-cavity 511 located in the pin 110, a portion of the first sub-cavity 511 being located in the plug portion 111.

[0160] For example, the first flow hole 563 is located inside the first sub-cavity 511, and the connecting pipe 800 communicates with the first sub-cavity 511 through the first flow hole 563.

[0161] For example, the fourth end 840 is fixedly connected to the cavity wall of the first sub-cavity 511. When the cavity wall of the liquid cooling cavity 510 is provided with a fixing structure 112, the fixing structure 112 is provided on the cavity wall of the first sub-cavity 511.

[0162] Figure 11 This is a schematic diagram of an adapter provided in an embodiment of this application. Figure 12 for Figure 11 Another schematic diagram of the adapter provided in the document. Figure 13 for Figure 11 A cross-sectional schematic diagram of the adapter provided in the document. Figure 13 The cross section is the section containing the axis of the flow port of the adapter and the axis of the first connecting part.

[0163] like Figures 11-13 As shown, the power terminal 100 also includes an adapter 120, which includes a second connecting portion 121, a first connecting portion 122 and a fourth connecting portion 123. The liquid cooling cavity 510 also includes a second sub-cavity 512 located in the adapter 120. A portion of the second sub-cavity 512 is located in the fourth connecting portion 123, and the flow port 520 communicates with the second sub-cavity 512.

[0164] Figure 14 for Figure 8 An exploded view of the power terminals provided.

[0165] like Figure 14 As shown, the second connector 130 is fixedly connected to the adapter 120, and the pin 110 is fixedly connected to the adapter 120. The pin 110 is located on the side of the fourth connecting part 123 away from the second connecting part 121. The first sub-cavity 511 passes through the end of the pin 110 facing the adapter 120, and the second sub-cavity 512 passes through the end of the adapter 120 facing the pin 110. The first sub-cavity 511 and the second sub-cavity 512 are connected.

[0166] This facilitates the formation of a liquid cooling cavity 510 within the power terminal 100, enabling liquid cooling of the plug-in portion 111.

[0167] like Figures 11-13 As shown, for example, the fourth connecting part 123 has a first interface 123a at the flow port 520, and the second connector 130 is inserted into the first interface 123a. For example, the second connector 130 can be inserted into the first interface 123a and fixedly connected to the fourth connecting part 123 by welding.

[0168] For example, the adapter 120 may have a second interface 124, into which the pin 110 is inserted. For instance, the pin 110 may be inserted into a second structure and fixedly connected to the adapter 120 by soldering.

[0169] For example, a connecting hole 530 is provided on the adapter 120. The connecting hole 530 is located on the side of the second sub-cavity 512 away from the first sub-cavity 511, and the connecting hole 530 connects to the second sub-cavity 512.

[0170] For example, the second part 122b can be a circular tubular structure, and the first part 122a can be a polygonal tubular structure. That is, the outer contour of the second part 122b can be circular, and the outer contour of the first part 122a can be polygonal. For example, the first part 122a can be a regular hexagonal tubular structure, that is, the outer contour of the first part 122a can be regular hexagonal.

[0171] For example, the inner contour of the first portion 122a may be different from the outer contour of the first portion 122a. For instance, the inner contour of the first portion 122a may be a circle.

[0172] For example, the shape of the first part 122a can be formed by extruding and deforming a round tube.

[0173] Figure 15 This is a cross-sectional schematic diagram of a first clamping sleeve provided in an embodiment of this application. Figure 15 The cross section is the section where the axis of the first clamping sleeve is located.

[0174] like Figure 15 As shown, the inner wall of the first clamping sleeve 610 has a first locking part 611. The first clamping sleeve 610 presses the first liquid tube 410 onto the first connector 322 through the first locking part 611, so that the first liquid tube 410 and the first connector 322 are sealed together.

[0175] Figure 16 A schematic diagram of a sleeve provided in an embodiment of this application. Figure 17 for Figure 16 A schematic diagram of a cross-section of the provided sleeve. Figure 17 The section in the middle is the section where the axis of the casing is located.

[0176] like Figure 16 , Figure 17 As shown, in some examples, the outer wall of the first connector 322 has a first inclined surface 322a, and the first locking part 611 presses the first liquid tube 410 onto the first inclined surface 322a. The first inclined surface 322a can convert the force along the axial direction of the first connector 322 into a radial force along the first connector 322, so as to achieve a sealed connection between the first liquid tube 410 and the first connector 322.

[0177] In some examples, the first locking portion 611 includes a second bevel (not shown) that presses the first liquid tube 410 against the first connector 322 to achieve a sealed connection between the first liquid tube 410 and the first connector 322. The second bevel can convert the axial force of the first connector 322 into a radial force of the first connector 322, thereby facilitating the sealed connection between the first liquid tube 410 and the first connector 322.

[0178] For example, the outer wall of the first connector 322 has a first inclined surface 322a, and the second locking part 312 includes a second inclined surface, which presses the first liquid tube 410 onto the first inclined surface 322a.

[0179] like Figure 16 , Figure 17 As shown, in some examples, the outer wall of the first end 310 has an outwardly protruding second locking portion 312.

[0180] Figure 18 This is a schematic diagram of a second clamping sleeve provided in an embodiment of this application.

[0181] like Figure 18 As shown, in some examples, the inner wall of the second clamping sleeve 620 has an inwardly protruding third locking portion 621, which presses against the second locking portion 312, such that the end face of the first end 310 and the end of the connecting sub-part 121b connected to the positioning sub-part 121a presses the seal 630 to achieve a sealed connection between the first end 310 and the connecting sub-part 121b.

[0182] For example, seal 630 can be a sealing ring.

[0183] like Figure 17 As shown, in some examples, the end face of the first end 310 has a sealing groove 311, and the sealing ring is disposed in the sealing groove 311, so that there is a large sealing surface between the sealing ring and the first end 310. In addition, the sealing groove 311 can also play a role in positioning the sealing cavity, so that the sealing ring is not easy to shift.

[0184] Figure 19 for Figure 2 An exploded view of the power terminal of the charging gun provided.

[0185] like Figure 19 As shown, in some examples, the charging gun 10 also includes a temperature sensor 700 disposed on the outer surface of the sleeve 300 to detect the temperature of the power terminal 100.

[0186] For example, the sleeve 300 is made of a thermally conductive material.

[0187] For example, the temperature sensor 700 can be fixed to the sleeve 300 by means of thermally conductive adhesive.

[0188] For example, heat shrink tubing is provided on the outside of the sleeve 300 and the temperature sensor 700, which can press and fix the temperature sensor 700 onto the sleeve 300.

[0189] For example, the outer surface of the sleeve 300 has a mounting groove 330 (e.g. Figure 16 As shown in the figure, the assembly groove 330 is located between the first end 310 and the second end 320, and the temperature sensor 700 is disposed in the assembly groove 330.

[0190] For example, the outer surface of the sleeve 300 has a plurality of mounting grooves 330 arranged circumferentially around the sleeve 300 so that the temperature sensor 700 can be positioned at a preset relative position to the power terminal 100 when the sleeve 300 is rotated to different positions.

[0191] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0192] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A charging gun (10), characterized in that, Includes power terminals (100), connecting tubes (800), and power lines (420); The power terminal (100) includes a first connecting portion (122), which is a tubular structure; The connecting tube (800) is sleeved inside the first connecting part (122), and one end of the power line (420) is located between the outer wall of the connecting tube (800) and the inner wall of the first connecting part (122), and is pressed and fixed by the connecting tube (800) and the first connecting part (122); The power terminal (100) has a liquid cooling cavity (510), and the connecting pipe (800) is connected to the liquid cooling cavity (510).

2. The charging gun (10) according to claim 1, characterized in that, The power terminal (100) has a communication hole (530) that connects the inner cavity of the first connecting part (122) to the liquid cooling cavity (510). The connecting tube (800) passes through the communication hole (530) and is fixedly connected to the hole wall of the communication hole (530).

3. The charging gun (10) according to claim 1, characterized in that, One end of the connecting pipe (800) is located inside the liquid cooling cavity (510) and is fixedly connected to the cavity wall of the liquid cooling cavity (510); The side wall of the portion of the connecting pipe (800) located inside the liquid cooling cavity (510) has a first flow hole (563), and the connecting pipe (800) communicates with the liquid cooling cavity (510) through the first flow hole (563).

4. The charging gun (10) according to any one of claims 1-3, characterized in that, The power terminal (100) further includes a second connecting portion (121), one end of the first connecting portion (122) being connected to one end of the second connecting portion (121); The charging gun (10) also includes a sleeve (300), the sleeve (300) includes a first end (310) and a second end (320), the first end (310) is connected to the second connecting part (121), the first connecting part (122) is sleeved in the sleeve (300), and there is a flow channel (540) between the first connecting part (122) and the sleeve (300); The connecting pipe (800) has a second flow hole (561) located inside the first connecting part (122), and the first connecting part (122) has a third flow hole (562) that connects the second flow hole (561) to the flow channel (540).

5. The charging gun (10) according to claim 4, characterized in that, The first connecting portion (122) includes a first part (122a) and a second part (122b), the second part (122b) being located between the first part (122a) and the second connecting portion (121); The connecting pipe (800) includes a first segment (810) located within the first part (122a) and a second segment (820) located within the second part (122b). One end of the power line (420) is located between the outer wall of the first segment (810) and the inner wall of the first part (122a) and is pressed and fixed by the first segment (810) and the first part (122a). The second flow passage (561) is located in the second segment (820), and the third flow passage (562) is located in the second part (122b). There is an annular space (570) between the second part (122b) and the second segment (820). The third flow passage (562) is connected to the second flow passage (561) through the space (570).

6. The charging gun (10) according to claim 4, characterized in that, It also includes a first liquid pipe (410), which is sleeved outside the power line (420). The first liquid pipe (410) is connected to the second end (320). A first liquid cooling channel (551) is provided between the first liquid pipe (410) and the power line (420). The flow channel (540) is connected to the first liquid cooling channel (551).

7. The charging gun (10) according to any one of claims 1-3, characterized in that, The power line (420) has a second liquid cooling channel (552), and the connecting pipe (800) is connected to the second liquid cooling channel (552).

8. The charging gun (10) according to claim 7, characterized in that, It also includes liquid cooling pipes (430); The power line (420) is sleeved outside the liquid cooling pipe (430), and the liquid cooling pipe (430) has the second liquid cooling flow channel (552) inside; The connecting pipe (800) includes a third end (830), the liquid cooling pipe (430) is connected to the third end (830), and the connecting pipe (800) is connected to the second liquid cooling channel (552) through the third end (830).

9. The charging gun (10) according to claim 8, characterized in that, The third end (830) is sleeved outside the liquid cooling pipe (430), and the inner wall of the third end (830) is connected to the outer wall of the liquid cooling pipe (430).

10. A charging device, characterized in that, Includes a charging pile (20) and a charging gun (10) as described in any one of claims 1-9; The charging gun (10) also includes a second liquid pipe (200), which is connected to the liquid cooling chamber (510) of the charging gun (10); The charging pile (20) includes a power supply component (21) and a liquid supply component (22). The power terminal (100) of the charging gun (10) is electrically connected to the power supply component (21) through the power line (420) of the charging gun (10). One of the inlet and outlet of the liquid supply component (22) is connected to the second liquid pipe (200), and the other of the inlet and outlet of the liquid supply component (22) is connected to the connecting pipe (800) of the charging gun (10).

Images