Charging gun and charging device

Abstract

The embodiment of the application provides a charging gun and a charging device, the charging gun comprises a first cable, a second cable and a gun head. The first cable comprises a first wire core and a first liquid cooling channel, the first cable is used for containing a cooling working medium, and the first wire core is immersed in the cooling working medium. The second cable comprises a second wire core and a second liquid cooling channel, the second wire core and the first wire core are opposite in polarity, the second liquid cooling channel is used for containing the cooling working medium, and the cooling working medium is used for liquid cooling heat dissipation for the second wire core. The first cable and the second cable are electrically connected with the gun head. The charging gun provided by the embodiment of the application solves the problem of poor heat dissipation effect.

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] A charging gun cable typically consists of conductive wires and an outer insulating layer covering the conductive wires. When current flows through the cable, the conductive wires generate heat due to their own impedance. When the temperature of the conductive wires is too high, it can reduce the cable's current-carrying capacity, limiting charging power and potentially creating safety hazards.

[0003] Therefore, to address the issue of cable temperature rise, charging guns typically employ liquid-cooled cables. Liquid-cooled cables have internal channels for the flow of cooling fluid, which cools the conductive cores. However, existing charging guns still suffer from poor heat dissipation during prolonged high-power charging, leading to excessively high temperatures that affect charging efficiency and lifespan. Therefore, a charging gun with superior heat dissipation is urgently needed. Summary of the Invention

[0004] This application provides a charging gun and a charging device that can solve the problem of poor heat dissipation in the charging gun.

[0005] In a first aspect, embodiments of this application provide a charging gun, including a first cable, a second cable, and a charging head. The first cable includes a first wire core and a first liquid-cooling channel, the first liquid-cooling channel being used to contain a cooling medium, and the first wire core being immersed in the cooling medium. The second cable includes a second wire core and a second liquid-cooling channel, the second wire core having opposite polarities to the first wire core, the second liquid-cooling channel being used to contain a cooling medium, and the cooling medium being used to liquid-cool the second wire core. Both the first cable and the second cable are electrically connected to the charging head.

[0006] The charging gun provided in this application embodiment allows the cooling medium to circulate within a first liquid cooling channel and a second liquid cooling channel. Since the first wire core can be immersed in the cooling medium within the first liquid cooling channel, there is direct and sufficient contact between the first wire core and the cooling medium, thus more effectively improving the heat dissipation effect on the first wire core. Furthermore, the cooling medium within the second liquid cooling channel continuously provides liquid cooling to the second wire core, ensuring its heat dissipation performance.

[0007] It is easy to understand that the first and second cables can be disposed outside the insulating protective sleeve. The first and second cables can be in contact with each other; therefore, when the temperature of either the first or second cable is high, heat will accumulate inside the insulating protective sleeve, causing excessive temperature and affecting charging performance. In this embodiment, since the first core can be in direct and sufficient contact with the cooling medium, the first core has a better heat dissipation effect, which helps reduce the heat inside the insulating protective sleeve, thereby ensuring the charging performance of the charging gun.

[0008] Therefore, the first and second wires in the embodiments of this application can have better heat dissipation, so that the charging gun can have a larger output current, thereby meeting the charging power of electric vehicles and shortening the charging time.

[0009] In one possible implementation, the number of the first cable and the second cable can be one, or the number of the first cable and the second cable can be multiple.

[0010] When there are multiple first and second cables, taking multiple first cables as an example, the first cores within each cable can all be used to transmit current. It's easy to understand that a larger diameter for the first core allows for higher charging power, which helps shorten charging time. However, increasing the diameter of the first core negatively impacts overall heat dissipation. For example, when the cooling medium is distributed on the outer wall of the first core, heat dissipation in the central area is poor. Furthermore, a larger diameter for the first core also means a larger diameter for the first cable and a larger overall outer diameter for the insulating sleeve. However, the outer diameter of the insulating sleeve typically has an upper limit; therefore, the diameter of the first core also has an upper limit, limiting the maximum output current of the first core, thus affecting charging power and increasing charging time.

[0011] Therefore, by using multiple first cables, a larger charging power can be achieved. Furthermore, the diameter of the first core within each first cable does not need to be large. Each first core is equipped with a first liquid cooling channel for immersion cooling, ensuring good heat dissipation for each core and preventing excessively high temperatures.

[0012] In one possible implementation, the cooling medium is a non-insulating liquid coolant.

[0013] It should be noted that non-insulating liquid cooling medium can refer to cooling medium that includes water. Since water is conductive, in this embodiment of the application, liquid cooling medium containing water is defined as non-insulating liquid cooling medium.

[0014] In this embodiment, since the cooling medium contains water, and water has advantages such as high specific heat capacity, low viscosity, high fluidity, and strong heat dissipation capacity, immersing the first wire core in the cooling medium can more effectively improve the heat dissipation effect of the first wire core, thereby improving the heat dissipation effect of the charging gun.

[0015] It is easy to understand that the cooling medium in the first liquid cooling channel and the second liquid cooling channel can be the same. Therefore, by using a non-insulating liquid cooling medium, the heat dissipation effect of the first core can be effectively improved, and the heat dissipation effect of the second core can also be effectively improved.

[0016] Compared to insulating materials such as fluorinated liquids and silicone oils used as cooling media, the cooling medium provided in this application embodiment has better fluidity, resulting in better heat dissipation for both the first and second wire cores. Furthermore, it reduces the material cost of the cooling medium. Therefore, this application embodiment provides a charging gun with good heat dissipation and low cost, achieving a balance between heat dissipation efficiency and cost.

[0017] In one possible implementation, the charging gun may further include a return pipe. The return pipe is used to communicate with the cooling capacity distribution unit. Both the first liquid cooling channel and the second liquid cooling channel are connected to the return pipe, and the cooling working fluid in the first liquid cooling channel and the cooling working fluid in the second liquid cooling channel flows back to the cooling capacity distribution unit through the return pipe.

[0018] In this embodiment, the cooling distribution unit can be used to provide and recover cooling medium for the charging gun, allowing the cooling medium to circulate within the charging gun, thereby achieving continuous heat dissipation for the first and second wire cores. A return pipe is connected to the cooling distribution unit. After flowing through the charging gun, the cooling medium can flow back to the cooling distribution unit via the return pipe.

[0019] When there is only one first cable and one second cable, two liquid supply terminals can be led out from the cooling distribution unit to provide cooling medium to the first cable and the second cable respectively. The cooling medium flows in the first liquid cooling channel to immerse the first core, thereby dissipating heat from the first core. The cooling medium enters the second liquid cooling channel to dissipate heat from the second core. After completing the heat dissipation function for the first and second cores, the cooling medium flowing through the first and second liquid cooling channels can flow back to the cooling distribution unit through the same return pipe.

[0020] When there are multiple first and second cables, for example, when there are two first and two second cables, the cooling distribution unit can have two liquid supply terminals. One liquid supply terminal can provide cooling medium to the first liquid cooling channels of the two first cables, and the other liquid supply terminal can provide cooling medium to the second liquid cooling channels of the two second cables. After the cooling medium in the two first liquid cooling channels has dissipated heat from the first wire core, and the cooling medium in the two second liquid cooling channels has dissipated heat from the second wire core, the cooling medium can flow back to the cooling distribution unit through a return pipe.

[0021] One easily understood aspect is that by using a return pipeline to return the coolant to the cooling distribution unit, the flow resistance of the coolant returning to the cooling distribution unit can be reduced, thereby improving the circulation efficiency of the coolant and thus improving the heat dissipation efficiency of the charging gun.

[0022] In one possible implementation, the charging gun further includes a liquid guide tube, one end of which is connected to a first liquid cooling channel, and the other end of which is connected to a second liquid cooling channel.

[0023] In this embodiment, the liquid guide tube can connect the first liquid cooling channel and the second liquid cooling channel. Coolant can flow within the first liquid cooling channel and the second liquid cooling channel.

[0024] Specifically, when there is only one first cable and one second cable, the cooling distribution unit can have one liquid supply end and one liquid return end. The liquid supply end and the liquid return end can be connected to the first liquid cooling channel and the second liquid cooling channel, respectively. The cooling distribution unit provides cooling medium to one of the first liquid cooling channel and the second liquid cooling channel through the liquid supply end. After the cooling medium has dissipated heat from the first and second cores, it can flow back to the cooling distribution unit through the other of the first and second liquid cooling channels.

[0025] When there are two first cables and two second cables, the cooling distribution unit can have one liquid supply end and one liquid return end. The cooling distribution unit can supply liquid to either the two first liquid cooling channels or the two second liquid cooling channels through the liquid supply end. For example, the liquid supply end can supply liquid to both first liquid cooling channels, where the cooling medium can immerse and dissipate heat from the two first cores respectively. Then, the cooling medium can enter the second liquid cooling channels of the two second cables through the liquid guide pipes to dissipate heat from the second cores respectively. The cooling medium can flow through the first liquid cooling channels, the second liquid cooling channels, and then return to the liquid return end of the cooling distribution unit.

[0026] In one possible implementation, the second cable is used to connect to the liquid supply end of the cooling capacity distribution unit, and the first cable is used to connect to the liquid return end of the cooling capacity distribution unit. The cooling working fluid flows sequentially through the second liquid cooling channel, the liquid guide pipe, and the first liquid cooling channel.

[0027] In this embodiment, the cooling medium in the second liquid cooling channel and the second wire core are separated by an insulating material, while the cooling medium in the first liquid cooling channel can directly contact the first wire core. Therefore, the heat absorption effect of the cooling medium on the second wire core is lower than that on the first wire core. In other words, the temperature rise of the cooling medium after flowing through the second liquid cooling channel is lower than the temperature rise of the cooling medium after flowing through the first liquid cooling channel. Therefore, by setting the cooling medium to flow through the second liquid cooling channel first and then through the first liquid cooling channel, the cooling medium can be utilized more efficiently.

[0028] It should be noted that, due to the direct contact between the cooling medium and the first wire core, although the cooling medium may experience a certain degree of temperature increase after flowing through the second liquid cooling channel, it can still absorb the heat generated by the first wire core to dissipate heat. Furthermore, this allows the temperatures of the first and second wire cores to tend towards equilibrium, reducing the possibility that excessively high or low temperatures of one core could affect the charging performance of the charging gun.

[0029] In one possible implementation, the charging gun further includes a first liquid return channel, one end of which is connected to a first liquid cooling channel, and the other end of which is connected to a cooling capacity distribution unit. The cooling working fluid of the first liquid cooling channel flows back to the cooling capacity distribution unit through the first liquid return channel.

[0030] In this embodiment, the liquid supply end of the cooling distribution unit can provide cooling medium to the first liquid cooling channel. After the cooling medium in the first liquid cooling channel immerses the first wire core to dissipate heat from it, the cooling medium can flow back to the cooling distribution unit through the first return channel. In other words, the first liquid cooling channel and the cooling distribution unit can achieve cooling medium circulation through the first return channel.

[0031] In one possible implementation, the charging gun further includes a second liquid return channel, one end of which is connected to a second liquid cooling channel, and the other end of which is connected to a cooling capacity distribution unit. The cooling working fluid of the second liquid cooling channel flows back to the cooling capacity distribution unit through the second liquid return channel.

[0032] The liquid supply end of the cooling distribution unit can provide cooling medium to the second liquid cooling channel. After the cooling medium in the second liquid cooling channel dissipates heat to the second wire core, it can flow back to the cooling distribution unit through the second return channel. In other words, the second liquid cooling channel and the cooling distribution unit can achieve cooling medium circulation through the second return channel.

[0033] In one possible implementation, the first cable includes a first outer sheath, which is sleeved on the outside of the first wire core. A first liquid cooling channel is formed between the first outer sheath and the first wire core to contain a cooling medium, which immerses the first wire core.

[0034] In this embodiment, the first outer sheath protects the first wire core and contains the cooling medium. A radial gap may exist between the first outer sheath and the first wire core to form a first liquid cooling channel, allowing the cooling medium within the channel to immerse the first wire core. The cooling medium and the first wire core are in full contact, so that when the cooling medium flows within the first liquid cooling channel, it can remove heat from the first wire core to the outside of the charging gun.

[0035] It should be noted that there is no external insulation layer on the outer wall of the first wire core. The cooling medium is in direct contact with the first wire core. Therefore, during the heat dissipation process of the first wire core, the heat of the first wire core can be directly transferred to the cooling medium without first being transferred to the external insulation layer, thus achieving efficient heat dissipation of the first wire core.

[0036] In one possible implementation, the second cable includes an insulating sleeve, the interior of which forms a second liquid-cooling channel, and the second wire core is located outside the insulating sleeve.

[0037] In this embodiment, a cooling medium is provided inside the insulating sleeve. The second wire core dissipates heat in an insulated manner from the cooling medium through the insulating sleeve. The insulating sleeve may be located inside the second wire core. The cooling medium inside the insulating sleeve can dissipate heat to the area near the center of the second wire core. Heat on the second wire core can be transferred to the central area and then removed through the cooling medium inside the insulating sleeve.

[0038] In some examples, the second cable may also include a second outer sheath. The second outer sheath may cover at least a portion of the second conductor to protect the second conductor.

[0039] In one possible implementation, the second cable includes an insulating sleeve, a second wire core located inside the insulating sleeve, and a second liquid cooling channel located outside the insulating sleeve.

[0040] In this embodiment, the cooling medium can be located on the outer periphery of the second core to dissipate heat from the outer periphery of the second core. Heat on the second core can diffuse from the center to the outer periphery and then be dissipated through the cooling medium outside the insulating sleeve.

[0041] In some examples, the second liquid cooling channel is located between the second outer sheath and the insulating sleeve.

[0042] In one possible implementation, the nozzle further includes a cold plate located at a first end of the nozzle. A second wire core and a second liquid cooling channel are separated at the first end. The second wire core is electrically connected to the nozzle, and the second liquid cooling channel is in communication with the cold plate.

[0043] In this embodiment, the second wire core and the second liquid cooling channel can be separated at the first end. The coolant in the second liquid cooling channel cannot dissipate heat from the second wire core at the first end. Therefore, by connecting the second liquid cooling channel to the cold plate, the cooling medium in the second liquid cooling channel can enter the cold plate. When the second wire core is electrically connected to the nozzle, heat can be dissipated from the second wire core connected to the cold plate through the cold plate.

[0044] Specifically, since the second wire core is connected to the wall of the cold plate, heat from the second wire core can be transferred to the cold plate. Furthermore, since the second liquid cooling channel is connected to the cold plate, the cooling medium within the second liquid cooling channel can enter the cold plate. The flow of the cooling medium within the cold plate dissipates heat from the second wire core connected to the cold plate wall. Thus, heat from the second wire core is first transferred to the cold plate, and then dissipated from the separated second wire core through the flow of the cooling medium within the cold plate.

[0045] Therefore, before the second liquid cooling channel separates from the second wire core, the cooling medium within the second liquid cooling channel can dissipate heat from the second wire core. After the second liquid cooling channel separates from the second wire core, the cooling plate can dissipate heat from the second wire core, thus ensuring the overall heat dissipation effect of the second wire core.

[0046] In one possible implementation, there are multiple second cables. The second cores of the multiple second cables are electrically connected to the gun head via an adapter, which corresponds to the cold plate.

[0047] In this embodiment, the adapter may be conductive to electrically connect the second wire core to the gun head, so that when the gun head is connected to an electric vehicle, the second wire core can transmit current through the adapter.

[0048] Since the adapter can be used for electrical connection between the second wire core and the gun head, by setting the adapter, the adapter can have a larger surface area for connection with the cold plate. The cold plate can then dissipate heat from the adapter, preventing the adapter from overheating and affecting the working performance of the second cable and the gun head.

[0049] In one possible implementation, the gun head includes a first terminal and a second terminal. A first cable corresponds to the first terminal, a first wire core is electrically connected to the first terminal, and a first liquid cooling channel extends into the interior of the first terminal.

[0050] In this embodiment, the gun head can be electrically connected to the first and second wire cores via the first and second terminals, respectively. The first and second terminals of the gun head can be used to connect to a charging structure in a vehicle. Therefore, when the gun head is connected to a vehicle, the first and second cables and the gun head can provide power to the vehicle.

[0051] The first wire core can extend into the charging head to electrically connect with the first terminal. In other words, a portion of the first wire core can be located inside the charging head. Since the first wire core can be in immersion contact with the cooling medium, and the first liquid cooling channel can extend into the interior of the first terminal, the cooling medium can also enter the charging head. The cooling medium can also provide liquid cooling for the first terminal, effectively preventing the possibility of the first terminal overheating when it is inserted into the vehicle's charging structure, thus avoiding potential impacts on charging performance and safety.

[0052] Secondly, embodiments of this application provide a charging device, including a charging gun and a cooling distribution unit. The ends of a first cable and a second cable away from the gun head are connected to the cooling distribution unit, which provides a cooling medium to the charging gun.

[0053] The charging device provided in this application embodiment has a charging gun with good liquid cooling effect, which can improve the stability and reliability of the charging device during application. The cooling distribution unit can be used to efficiently liquid cool the first and second wires inside the charging gun, enabling the charging device to provide a larger charging current to the vehicle, thereby achieving fast charging and improving the user experience. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the structure of the charging device provided in the embodiments of this application;

[0055] Figure 2 This is a cross-sectional view of a charging gun provided in an embodiment of this application, showing that the first cable and the second cable are one.

[0056] Figure 3 This is a partial cross-sectional view of a charging device provided in an embodiment of this application, wherein the first cable and the second cable are one unit;

[0057] Figure 4 This is a cross-sectional view of a charging gun provided in this application embodiment, showing that the first cable and the second cable are two separate cables.

[0058] Figure 5 This is a charging device provided in an embodiment of the present application, wherein the first cable and the second cable are two partial cross-sectional structural schematic diagrams;

[0059] Figure 6 This is a partial cross-sectional view of another charging device provided in this application embodiment, wherein the first cable and the second cable are one.

[0060] Figure 7This is another charging device provided in the embodiments of this application, and the first cable and the second cable are two partial cross-sectional structural schematic diagrams;

[0061] Figure 8 This is a partial cross-sectional view of another charging device provided in the embodiments of this application, wherein the first cable and the second cable are one.

[0062] Figure 9 This is a partial three-dimensional structural diagram of a charging gun provided in this application embodiment, showing that the first cable and the second cable are two separate cables.

[0063] Explanation of reference numerals in the attached figures:

[0064] 10. Charging equipment;

[0065] 100. Charging gun;

[0066] 111, First cable; 1111, First conductor; 1131, First liquid cooling channel; 1112, First outer sheath;

[0067] 112. Second cable; 1121. Second conductor; 1132. Second liquid cooling channel; 1122. Insulating sleeve; 1123. Second outer sheath; 1124. Adapter;

[0068] 113. Return pipe; 113a. Supply end; 113b. Return end; 1133. Guide pipe;

[0069] 101. First return channel; 102. Second return channel;

[0070] 114. Cold-rolled steel plate;

[0071] 115. Insulating protective sleeve;

[0072] 120. Gun tip; 110a. First end;

[0073] 121. First terminal block; 122. Second terminal block;

[0074] 200. Charging piles;

[0075] 210. Charging module;

[0076] 220. Outer shell;

[0077] 230. Cooling capacity distribution unit. Detailed Implementation

[0078] The charging device provided in this application embodiment can be used for energy replenishment of electric vehicles. The main function of the charging device is to convert the alternating current (AC) from the power grid into direct current (or maintain AC), and then transmit it to the battery of the electric vehicle through a charging cable to provide energy replenishment for the electric vehicle, thereby enabling the electric vehicle to store enough electricity to support its operation.

[0079] Charging devices can be categorized by power supply method into AC charging devices and DC charging devices. AC charging devices provide lower current and take longer to charge. They offer flexible installation and are suitable for locations such as homes and parking lots. DC charging devices provide higher current and faster charging, making them suitable for public places requiring rapid charging. This application describes a DC charging device as an example.

[0080] A charging gun is a device that enables the transfer of electrical energy between the charging equipment and the electric vehicle. With the rapid development of the new energy vehicle industry, the driving range of electric vehicles is constantly increasing, and the battery capacity is also growing larger. Increasing the charging current is a common method to achieve high-power charging. However, increasing the charging current can easily lead to increased heat dissipation of the charging gun. Therefore, liquid cooling technology is generally used to dissipate heat from the charging gun's wires to reduce heat loss.

[0081] Figure 1 This is a schematic diagram of the structure of the charging device 10 provided in an embodiment of this application. (See reference...) Figure 1 The charging device 10 may include a charging gun 100 and a charging pile 200. The charging pile 200 is typically installed at a charging station and charges electric vehicles via the charging gun 100. The charging pile 200 includes a charging module 210 and a cooling distribution unit 230. The charging module 210 can provide electrical energy to the charging gun 100. The cooling distribution unit 230 can provide a cooling medium at a predetermined temperature to the charging gun 100. The cooling distribution unit 230 and the charging gun 100 can form a liquid-cooled circulation loop to continuously dissipate heat from the charging gun 100 through liquid cooling.

[0082] The charging device 10 may include a housing 220. The charging module 210 and the cooling distribution unit 230 may be located inside the housing 220 to protect the internal charging module 210 and cooling distribution unit 230 through the housing 220.

[0083] Continue to refer to Figure 1The charging gun 100 may include a gun head 120 and a first cable 111 and a second cable 112 with opposite polarities. The first cable 111 and the second cable 112 can connect the gun head 120 and the charging station 200. The charging station 200 is provided with a charging module 210 and a cooling distribution unit 230. One end of the first cable 111 can be connected to the gun head 120. The other end of the first cable 111 can be connected to the electrical interface of the charging module 210 and the cooling distribution unit 230, respectively. Similarly, one end of the second cable 112 can be connected to the gun head 120, and the other end of the second cable 112 can be connected to the electrical interface of the charging module 210 and the cooling distribution unit 230, respectively.

[0084] Specifically, refer to Figure 2 The first cable 111 includes a first conductive core 1111. The second cable 112 includes a second conductive core 1121. The first core 1111 and the second core 1121 can transmit the power from the charging module 210 to the charging head 120, and then to the electric vehicle through the charging head 120. When current is applied, the conductive cores generate heat due to their own impedance. Therefore, the first cable 111 and the second cable 112 respectively have a first liquid cooling channel 1131 and a second liquid cooling channel 1132 connected to the cooling distribution unit 230. By flowing a cooling medium in the first liquid cooling channel 1131, the cooling medium can exchange heat with the first core to remove the heat generated by the first core. By flowing a cooling medium in the second liquid cooling channel 1132, the cooling medium can exchange heat with the second core 1121 to remove the heat generated by the second core 1121, thereby reducing the heat of the charging gun 100 during charging.

[0085] In some examples, a water pump (not shown) may also be installed within the charging station 200. The water pump can be used to power the flow of the cooling medium so that the cooling medium can be delivered from the cooling capacity distribution unit 230 to the charging gun 100.

[0086] In some examples, a heat exchanger (not shown) may also be installed inside the charging pile 200. The cooling medium flowing through the first wire core 1111 and the second wire core 1121 can absorb heat from the first wire core 1121 to form a higher-temperature cooling medium. The heat exchanger can be used to cool the higher-temperature cooling medium, thereby continuously providing a lower-temperature cooling medium to the first and second wire cores 1121.

[0087] In this embodiment of the application, by immersing the first wire core 1111 in the cooling medium, the first wire core 1111 can be in direct contact with the cooling medium. Therefore, the efficiency of the cooling medium in absorbing the first wire core 1111 can be improved, thereby improving the heat dissipation effect on the first wire core 1111. This reduces the possibility that the charging gun 100 temperature will be too high during the charging process, which may affect the charging efficiency and charging performance.

[0088] Specifically, the first core 1111 and the second core 1121 can represent cores with opposite polarities. In other words, one of the first core 1111 and the second core 1121 can be a positive core, and the other can be a negative core. The first core 1111 can be immersed in the cooling medium within the first liquid cooling channel 1131, thus ensuring sufficient contact between the cooling medium and the first core 1111, which improves the heat dissipation efficiency of the first core 1111. Furthermore, the cooling medium within the second liquid cooling channel 1132 can provide liquid cooling for the second core 1121, reducing the possibility of overheating during charging. Therefore, during charging, both the first core 1111 and the second core 1121 can achieve good heat dissipation, maintaining the charging efficiency and reliability of the charging gun 100.

[0089] The charging gun 100 and charging device 10 provided in this application embodiment will be described in detail below through specific implementation methods.

[0090] See Figures 2 to 9 As shown in the figure, this application embodiment provides a charging gun 100. The charging gun 100 may include a first cable 111, a second cable 112, and a gun head 120.

[0091] See Figure 2 and Figure 3 As shown, the first cable 111 may include a first wire core 1111 and a first liquid cooling channel 1131. The first liquid cooling channel 1131 is used to contain a cooling medium. The first wire core 1111 may be immersed in the cooling medium within the first liquid cooling channel 1131 to dissipate heat from the first wire core 1111. It should be noted that immersion of the first wire core 1111 in the cooling medium means that the cooling medium is in direct contact with the first wire core 1111.

[0092] The second cable 112 may include a second core 1121 and a second liquid cooling channel 1132. The second core 1121 has the opposite polarity to the first core 1111. The second liquid cooling channel 1132 is used to contain a cooling medium. The cooling medium is used to dissipate heat from the second core 1121 through liquid cooling.

[0093] Both the first cable 111 and the second cable 112 can be electrically connected to the gun head 120. Specifically, the first cable 111 can be electrically connected to the gun head 120 through the first wire core 1111. The second cable 112 can be electrically connected to the gun head 120 through the second wire core 1121.

[0094] In this embodiment, the cooling medium can circulate within the first liquid cooling channel 1131 and the second liquid cooling channel 1132. Since the first wire core 1111 can be immersed in the cooling medium within the first liquid cooling channel 1131, there can be direct and sufficient contact between the first wire core 1111 and the cooling medium, thus more effectively improving the heat dissipation effect on the first wire core 1111. Furthermore, the cooling medium within the second liquid cooling channel 1132 can continuously perform liquid cooling heat dissipation on the second wire core 1121, ensuring the heat dissipation effect of the second wire core 1121.

[0095] It is readily understood that the first cable 111 and the second cable 112 can be covered by the insulating protective sleeve 115. The first cable 111 and the second cable 112 can be in contact with each other. Therefore, when the temperature of either the first cable 111 or the second cable 112 is high, heat will accumulate inside the insulating protective sleeve 115, leading to excessively high temperatures and affecting charging performance. In this embodiment, since the first core 1111 can be in direct and sufficient contact with the cooling medium, the first core 1111 has a better heat dissipation effect, which helps reduce the heat inside the insulating protective sleeve 115, thereby ensuring the charging performance of the charging gun 100.

[0096] Therefore, the first wire core 1111 and the second wire core 1121 in this embodiment of the application can have a better heat dissipation effect, so that the charging gun 100 can have a larger output current, thereby meeting the charging power of electric vehicles and shortening the charging time.

[0097] It should be noted that the method by which the cooling medium immerses the first wire core 1111 is not limited in the embodiments of this application. For example, the cooling medium can immerse the outer periphery of the first wire core 1111 to directly contact the outer periphery of the first wire core 1111. Alternatively, the interior of the first wire core 1111 can be filled with the cooling medium to directly contact the interior of the first wire core 1111.

[0098] In some examples, the cooling medium in the second liquid cooling channel 1132 and the second wire core 1121 may also be in immersion contact. Alternatively, the cooling medium in the second liquid cooling channel 1132 and the second wire core 1121 may be insulated from each other by an insulating material, which is not specifically limited in this embodiment.

[0099] In some examples, the number of first cable 111 and second cable 112 can be one, or the number of first cable 111 and second cable 112 can be multiple, which is not limited in this embodiment.

[0100] In some examples, when there are multiple first cables 111 and second cables 112, taking multiple first cables 111 as an example, the first cores 1111 within each of the multiple first cables 111 can all be used to transmit current. It is easy to understand that a larger diameter of the first core 1111 allows for a higher charging power, which is beneficial for shortening the charging time. However, increasing the diameter of the first core 1111 negatively impacts the overall heat dissipation of the first core 1111. For example, when the cooling medium is distributed on the outer wall of the first core 1111, the heat dissipation effect in the central area of ​​the first core 1111 is poor. Furthermore, a larger diameter of the first core 1111 results in a larger diameter of the first cable 111 and a larger overall outer diameter of the insulating protective sleeve 115. However, the outer diameter of the insulating protective sleeve 115 typically has an upper limit; therefore, the diameter of the first core 1111 also has an upper limit, thus limiting the maximum output current of the first core 1111, thereby affecting the charging power and increasing the charging time.

[0101] Therefore, by setting the number of first cables 111 to multiple, a larger charging power can be achieved. Furthermore, the wire diameter of the first core 1111 within each first cable 111 does not need to be large. Each first core 1111 is equipped with a first liquid cooling channel 1131 for immersion cooling, ensuring good heat dissipation for each core 1111 and preventing its temperature from becoming excessively high.

[0102] In some examples, when there are multiple first cables 111, the first liquid cooling channels 1131 within each of the multiple first cables 111 can converge at or near the nozzle 120. The cooling medium within the multiple first liquid cooling channels 1131 can enter the nozzle 120 so that when the nozzle 120 is electrically connected to the electric vehicle, the cooling medium can also dissipate heat from the nozzle 120.

[0103] In some feasible ways, the cooling medium in the embodiments of this application can be a non-insulating liquid coolant.

[0104] It should be noted that non-insulating liquid cooling medium can refer to cooling medium that includes water. Since water is conductive, in this embodiment of the application, liquid cooling medium containing water is defined as non-insulating liquid cooling medium.

[0105] In this embodiment, since the cooling medium contains water, and water has advantages such as high specific heat capacity, low viscosity, high fluidity, and strong heat dissipation capacity, immersing the first wire core 1111 in the cooling medium can more effectively improve the heat dissipation effect of the first wire core 1111, thereby improving the heat dissipation effect of the charging gun 100.

[0106] It is easy to understand that the cooling medium in the first liquid cooling channel 1131 and the second liquid cooling channel 1132 can be the same. Therefore, by using a non-insulating liquid cooling medium, the heat dissipation effect of the first wire core 1111 can be effectively improved, and the heat dissipation effect of the second wire core 1121 can also be effectively improved.

[0107] In particular, compared to insulating materials such as fluorinated liquid and silicone oil used as the cooling medium, the cooling medium provided in this application embodiment has better fluidity, resulting in better heat dissipation for both the first core 1111 and the second core 1121. Furthermore, it reduces the material cost of the cooling medium. Therefore, this application embodiment provides a charging gun 100 with good heat dissipation and low cost, achieving a balance between heat dissipation efficiency and cost.

[0108] In some examples, the cooling medium may also include at least one of ethylene glycol and propylene glycol. For example, the cooling medium may include water and ethylene glycol, or the cooling medium may include water and propylene glycol.

[0109] It should be noted that, since the cooling medium contains water and water is conductive, when the first core 1111 is immersed in the cooling medium, the cooling medium in the second liquid cooling channel 1132 can be insulated from the second core 1121, making it difficult for the first core 1111 and the second core 1121 to form an electrical connection. In other words, if the first core 1111 is in direct contact with the cooling medium, then the second core 1121 is insulated from the cooling medium.

[0110] In addition, it should be noted that when the first core 1111 is immersed in a water-containing cooling medium, it will not affect the safety of the first cable 111 in use.

[0111] In this embodiment, the method of insulating the cooling medium from the second core 1121 is not limited. For example, the cooling medium can be connected to the second core 1121 through an insulating material. The cooling medium can be located inside or outside the second core 1121.

[0112] See also some of the possible implementation methods. Figure 2 , Figure 3 and Figure 5As shown, the charging gun 100 may also include a return pipe 113. The return pipe 113 can be used to communicate with the cooling capacity distribution unit 230. The first liquid cooling channel 1131 and the second liquid cooling channel 1132 are both connected to the return pipe 113. The cooling medium in the first liquid cooling channel 1131 and the cooling medium in the second liquid cooling channel 1132 flow back to the cooling capacity distribution unit 230 through the return pipe 113.

[0113] The cooling distribution unit 230 provides and recovers cooling fluid to the charging gun 100, allowing the cooling fluid to circulate within the charging gun 100 and thus continuously dissipating heat from the first and second wire cores 1121. The return pipe 113 is connected to the cooling distribution unit 230. After flowing through the charging gun 100, the cooling fluid can return to the cooling distribution unit 230 via the return pipe 113.

[0114] Specifically, see Figure 2 and Figure 3 As shown, when there is only one first cable 111 and one second cable 112, two liquid supply terminals 113a can be led out from the cooling distribution unit 230 to provide cooling medium to the first cable 111 and the second cable 112 respectively. The cooling medium flows in the first liquid cooling channel 1131 to immerse the first wire core 1111, thereby achieving heat dissipation for the first wire core 1111. The cooling medium enters the second liquid cooling channel 1132 to dissipate heat for the second wire core 1121. After completing the heat dissipation function for the first wire core 1111 and the second wire core 1121, the cooling medium flowing through the first liquid cooling channel 1131 and the second liquid cooling channel 1132 can flow back to the cooling distribution unit 230 through the same return pipe 113.

[0115] When there are multiple first cables 111 and multiple second cables 112, for example, with Figure 5 For example, when there are two first cables 111 and two second cables 112, two liquid supply terminals 113a can be led out from the cooling distribution unit 230. One liquid supply terminal 113a can provide cooling medium to the first liquid cooling channel 1131 of the two first cables 111, and the other liquid supply terminal 113a can provide cooling medium to the second liquid cooling channel 1132 of the two second cables 112. After the cooling medium in the two first liquid cooling channels 1131 has dissipated heat from the first core 1111, and the cooling medium in the two second liquid cooling channels 1132 has dissipated heat from the second core 1121, the cooling medium can flow back to the cooling distribution unit 230 through a return pipe 113.

[0116] One easily understood aspect is that by using a return pipe 113 to return the coolant to the cooling distribution unit 230, the flow resistance of the coolant returning to the cooling distribution unit 230 can be reduced, thereby improving the circulation efficiency of the coolant and thus improving the heat dissipation efficiency of the charging gun 100.

[0117] See also some of the possible implementation methods. Figure 6 and Figure 7 As shown, the charging gun 100 in this embodiment may further include a liquid guide tube 1133. One end of the liquid guide tube 1133 may be connected to the first liquid cooling channel 1131. The other end of the liquid guide tube 1133 may be connected to the second liquid cooling channel 1132.

[0118] In this embodiment, the liquid guide pipe 1133 can connect the first liquid cooling channel 1131 and the second liquid cooling channel 1132. Coolant can flow within the first liquid cooling channel 1131 and the second liquid cooling channel 1132.

[0119] Specifically, see Figure 6 As shown, when there is only one first cable 111 and one second cable 112, the cooling capacity distribution unit 230 can have a liquid supply end 113a and a liquid return end 113b. The liquid supply end 113a and the liquid return end 113b can be connected to the first liquid cooling channel 1131 and the second liquid cooling channel 1132, respectively. The cooling capacity distribution unit 230 provides cooling medium to one of the first liquid cooling channel 1131 and the second liquid cooling channel 1132 through the liquid supply end 113a. After the cooling medium has dissipated heat from the first wire core 1111 and the second wire core 1121, it can flow back to the cooling capacity distribution unit 230 through the other of the first liquid cooling channel 1131 and the second liquid cooling channel 1132.

[0120] See Figure 4 and Figure 7 As shown, when there are two first cables 111 and two second cables 112, the cooling distribution unit 230 can have one liquid supply end 113a and one liquid return end 113b. The cooling distribution unit 230 can supply liquid to the two first liquid cooling channels 1131 or the two second liquid cooling channels 1132 through the liquid supply end 113a. For example, the liquid supply end 113a can supply liquid to the two first liquid cooling channels 1131, and the cooling medium in the first liquid cooling channels 1131 can respectively immerse and dissipate heat to the two first wire cores 1111. Then, the cooling medium can enter the second liquid cooling channels 1132 of the two second cables 112 through the liquid guide pipe 1133 to dissipate heat to the second wire cores 1121 respectively. The cooling medium can flow through the first liquid cooling channel 1131 and the second liquid cooling channel 1132, and then flow back to the liquid return end 113b of the cooling distribution unit 230.

[0121] See also some of the possible implementation methods. Figure 6 and Figure 7 As shown, in this embodiment of the application, the second cable 112 is used to connect to the liquid supply end 113a of the cooling capacity distribution unit 230. The first cable 111 is used to connect to the liquid return end 113b of the cooling capacity distribution unit 230. The cooling working fluid flows sequentially through the second liquid cooling channel 1132, the liquid guide pipe 1133, and the first liquid cooling channel 1131.

[0122] In this embodiment, the cooling medium in the second liquid cooling channel 1132 and the second wire core 1121 are separated by an insulating material, and the cooling medium in the first liquid cooling channel 1131 can directly contact the first wire core 1111. Therefore, the heat absorption effect of the cooling medium on the second wire core 1121 is lower than that on the first wire core 1111. In other words, the temperature rise of the cooling medium after flowing through the second liquid cooling channel 1132 is lower than the temperature rise of the cooling medium after flowing through the first liquid cooling channel 1131. Therefore, by setting the cooling medium to flow through the second liquid cooling channel 1132 first and then through the first liquid cooling channel 1131, the cooling medium can be utilized more efficiently.

[0123] It should be noted that, since the cooling medium is in direct contact with the first wire core 1111, although the cooling medium can generate a certain degree of temperature rise after flowing through the second liquid cooling channel 1132, it can still absorb the heat generated by the first wire core 1111 to dissipate heat from it. Furthermore, this allows the temperatures of the first wire core 1111 and the second wire core 1121 to tend towards equilibrium, reducing the possibility that excessively high or low temperatures of one of them would affect the charging performance of the charging gun 100.

[0124] See also some of the possible implementation methods. Figure 8 As shown, the charging gun 100 may further include a first return channel 101. One end of the first return channel 101 is connected to the first liquid cooling channel 1131. The other end of the first return channel 101 is used to connect to the cooling capacity distribution unit 230. The cooling working fluid of the first liquid cooling channel 1131 flows back to the cooling capacity distribution unit 230 through the first return channel 101.

[0125] In this embodiment, the liquid supply end 113a of the cooling distribution unit 230 can provide cooling medium to the first liquid cooling channel 1131. After the cooling medium in the first liquid cooling channel 1131 immerses the first wire core 1111 to dissipate heat from the first wire core 1111, the cooling medium can flow back to the cooling distribution unit 230 through the first return channel 101. In other words, the first liquid cooling channel 1131 and the cooling distribution unit 230 can achieve cooling medium circulation through the first return channel 101.

[0126] See also some of the possible implementation methods. Figure 8As shown, the charging gun 100 may further include a second liquid return channel 102. One end of the second liquid return channel 102 is connected to the second liquid cooling channel 1132, and the other end of the second liquid return channel 102 is used to connect to the cooling capacity distribution unit 230. The cooling working fluid of the second liquid cooling channel 1132 flows back to the cooling capacity distribution unit 230 through the second liquid return channel 102.

[0127] In this embodiment, the liquid supply end 113a of the cooling capacity distribution unit 230 can provide cooling medium to the second liquid cooling channel 1132. After the cooling medium in the second liquid cooling channel 1132 dissipates heat to the second wire core 1121, the cooling medium can flow back to the cooling capacity distribution unit 230 through the second return channel 102. In other words, the second liquid cooling channel 1132 and the cooling capacity distribution unit 230 can achieve cooling medium circulation through the second return channel 102.

[0128] See also some of the possible implementation methods. Figure 2 and Figure 4 As shown, the first cable 111 in this embodiment may include a first outer sheath 1112. The first outer sheath 1112 may be sleeved on the outside of the first core 1111. A first liquid cooling channel 1131 may be formed between the first outer sheath 1112 and the first core 1111 to accommodate a cooling medium. The cooling medium immerses the first core 1111.

[0129] In this embodiment, the first outer sheath 1112 protects the first core 1111 and contains the cooling medium. A radial gap may exist between the first outer sheath 1112 and the first core 1111 to form a first liquid cooling channel 1131, allowing the cooling medium within the channel to immerse the first core 1111. The cooling medium and the first core 1111 can be in full contact, so that when the cooling medium flows within the first liquid cooling channel 1131, it can remove heat from the first core 1111 to the outside of the first cable 111.

[0130] It should be noted that there is no external insulating layer on the outer wall of the first core 1111. The cooling medium is in direct contact with the first core 1111. Therefore, during the heat dissipation process of the first core 1111, the heat of the first core 1111 can be directly transferred to the cooling medium without first transferring it to the external insulating layer, thereby achieving efficient heat dissipation of the first core 1111.

[0131] In some examples, the first core 1111 can be located in the central region of the first outer sheath 1112, so that the cooling medium immersing the first core 1111 can be evenly distributed on the outer periphery of the first core 1111, which is beneficial for achieving uniform heat dissipation of the first core 1111. For example, the first core 1111 and the first outer sheath 1112 can be coaxially arranged.

[0132] See also some of the possible implementation methods. Figure 2 and Figure 4 As shown, the second cable 112 may include an insulating sleeve 1122. A second liquid cooling channel 1132 may be formed inside the insulating sleeve 1122 to contain a cooling medium, and the second core 1121 is located outside the insulating sleeve 1122.

[0133] In this embodiment, a cooling medium is provided inside the insulating sleeve 1122. The second wire core 1121 dissipates heat through the insulating sleeve 1122 and the cooling medium in a non-contact manner. The insulating sleeve 1122 may be located inside the second wire core 1121. The cooling medium inside the insulating sleeve 1122 can dissipate heat to the area near the center of the second wire core 1121. Heat on the second wire core 1121 can be transferred to the central area and then removed through the cooling medium inside the insulating sleeve 1122.

[0134] In some examples, the insulating sleeve 1122 and the first wire core 1111 can be coaxially arranged to improve the uniformity of heat dissipation for the first wire core 1111. Furthermore, the insulating sleeve 1122 is located inside the first wire core 1111, resulting in a simple overall structure that is easy to lay out and install, and helps to reduce the production cost of the first cable 111.

[0135] In some examples, the second cable 112 may also include a second outer sheath 1123. The second outer sheath 1123 may cover the outside of the second core 1121. The second outer sheath 1123 may protect the second core 1121 and the second liquid cooling channel 1132 located inside it.

[0136] In other examples, the second cable 112 includes an insulating sleeve 1122. The second core 1121 may be located inside the insulating sleeve 1122. The second liquid cooling channel 1132 is located outside the insulating sleeve 1122.

[0137] In this embodiment, the cooling medium can be located on the outer periphery of the second core 1121 to dissipate heat from the outer periphery of the second core 1121. The heat on the second core 1121 can diffuse from the center to the outer periphery, and then be dissipated through the cooling medium outside the insulating sleeve 1122.

[0138] In some examples, the cooling medium may be located between the second outer sheath 1123 and the insulating sheath 1122.

[0139] See also some of the possible implementation methods. Figure 4 , Figures 5 to 9As shown, the nozzle 120 may further include a cold plate 114. The cold plate 114 may be located at the first end 110a of the nozzle 120. The second wire core 1121 and the second liquid cooling channel 1132 may be separated at the first end 110a. The second wire core 1121 may be connected to the wall of the cold plate 114, and the second liquid cooling channel 1132 may communicate with the cold plate 114.

[0140] In this embodiment, the second core 1121 and the second liquid cooling channel 1132 can be separated at the first end 110a. The coolant in the second liquid cooling channel 1132 cannot dissipate heat from the second core 1121 at the first end 110a. Therefore, by connecting the second liquid cooling channel 1132 to the cold plate 114, the cooling medium in the second liquid cooling channel 1132 can enter the cold plate 114. When the second core 1121 is connected to the wall of the cold plate 114, heat can be dissipated from the second core 1121 connected to the cold plate 114 through the cold plate 114.

[0141] Specifically, since the second wire core 1121 is connected to the wall of the cold plate 114, the heat on the second wire core 1121 can be transferred to the cold plate 114. Furthermore, since the second liquid cooling channel 1132 is connected to the cold plate 114, the cooling medium in the second liquid cooling channel 1132 can enter the cold plate 114. The flow of the cooling medium within the cold plate 114 dissipates heat from the second wire core 1121 connected to the wall of the cold plate 114. Thus, the heat on the second wire core 1121 can first be transferred to the cold plate 114, and then dissipated from the separated second wire core 1121 through the flow of the cooling medium within the cold plate 114.

[0142] Therefore, before the second liquid cooling channel 1132 separates from the second wire core 1121, the cooling medium in the second liquid cooling channel 1132 can dissipate heat from the second wire core 1121. After the second liquid cooling channel 1132 separates from the second wire core 1121, the cold plate 114 can dissipate heat from the second wire core 1121, thereby ensuring the heat dissipation effect of the entire second wire core 1121.

[0143] In some examples, the cold plate 114 may have a large heat dissipation surface to improve the heat dissipation efficiency of the second core 1121.

[0144] See also some of the possible implementation methods. Figure 9 As shown, there can be multiple second cables 112. The second core 1121 of the multiple second cables 112 is electrically connected to the gun head 120 through an adapter 1124. The adapter 1124 corresponds to the cold plate 114.

[0145] In this embodiment of the application, the adapter 1124 may be conductive to electrically connect the second wire core 1121 to the gun head 120, so that when the gun head 120 is connected to an electric vehicle, the second wire core 1121 can transmit current through the adapter 1124.

[0146] Since the adapter 1124 can be used for the electrical connection between the second wire core 1121 and the gun head 120, by setting the adapter 1124, the adapter 1124 can have a large surface area for connection with the cold plate 114. Thus, the cold plate 114 can dissipate heat from the adapter 1124, avoiding the adapter 1124 from overheating and affecting the working performance of the second cable 112 and the gun head 120.

[0147] In some examples, the adapter 1124 and the cold plate 114 can be attached to each other. The heat generated by the second cores 1121 of the multiple second cables 112 can be transferred to the adapter 1124 and dissipated through the cold plate 114 attached to the adapter 1124.

[0148] See also some of the possible implementation methods. Figure 3 , Figures 5 to 8 As shown, the gun head 120 may include a first terminal 121 and a second terminal 122.

[0149] The first cable 111 can correspond to the first terminal 121. The first wire core 1111 is electrically connected to the first terminal 121. The first liquid cooling channel can extend into the interior of the first terminal 121.

[0150] It is easy to understand that since the first wire core 1111 is electrically connected to the first terminal 121 and the second wire core 1121 is electrically connected to the second terminal 122, and the polarities of the first wire core 1111 and the second wire core 1121 are opposite, the polarities of the first terminal 121 and the second terminal 122 are also opposite.

[0151] In this embodiment, the gun head 120 is electrically connected to the first wire core 1111 and the second wire core 1121 via the first terminal 121 and the second terminal 122, respectively. The first terminal 121 and the second terminal 122 of the gun head 120 can be used to connect to a charging structure in a vehicle. Therefore, when the gun head 120 is connected to a vehicle, the first cable 111, the second cable 112, and the gun head 120 can provide electrical power to the vehicle.

[0152] The first wire core 1111 can extend into the charging head 120 to electrically connect with the first terminal 121. In other words, a portion of the first wire core 1111 can be located inside the charging head 120. Since the first wire core 1111 can be in immersion contact with the cooling medium, and the first liquid cooling channel 1131 can extend into the interior of the first terminal 121, the cooling medium can also enter the charging head 120. The cooling medium can also provide liquid cooling for the first terminal 121, effectively preventing the possibility of the first terminal 121 overheating when it is inserted into the vehicle's charging structure, thus avoiding potential impacts on charging performance and safety.

[0153] Since the second wire core 1121 separates from the second liquid cooling channel 1132 near the first end 110a, the separated second wire core 1121 can be connected to the second terminal 122 via the adapter 1124. Because the adapter 1124 can be in contact with the cold plate 114, the heat from the second wire core 1121 transferred to the adapter 1124 can be dissipated through the cold plate 114. It is easy to understand that the heat generated when the second terminal 122 is inserted into the vehicle's charging structure can be transferred to the adapter 1124 via the second terminal 122, and then dissipated through the cold plate 114 connected to the adapter 1124, thereby preventing the temperature of the second terminal 122 from becoming too high.

[0154] In some examples, the nozzle 120 may also include a cable management bracket for securing the first cable 111 and the second cable 112. The first cable 111 and the second cable 112 can be plugged into the cable management bracket.

[0155] For example, the cable management rack may be provided with connectors adapted to the first cable 111 and the second cable 112, respectively. The first cable 111 can be connected to the first terminal block 121 by passing through the corresponding connector. The second cable 112 can be connected to the second terminal block 122 by passing through the corresponding connector.

[0156] This application provides a charging device 10. See also... Figure 1 As shown, the charging device 10 may include a charging gun 100 and a cooling distribution unit 230.

[0157] The ends of the first cable 111 and the second cable 112, away from the nozzle 120, are connected to the cooling distribution unit 230. The cooling distribution unit 230 can be used to provide cooling fluid to the charging gun 100.

[0158] This application provides a charging device 10. Because the charging gun 100 has good liquid cooling performance, the stability and reliability of the charging device 10 during application can be improved. The cooling distribution unit 230 can efficiently liquid cool the first wire core 1111 and the second wire core 1121 within the charging gun 100, enabling the charging device 10 to provide a larger charging current to the vehicle, thereby achieving fast charging and improving the user experience.

[0159] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly 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.

[0160] 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 (100), characterized in that, include: The first cable (111) includes a first core (1111) and a first liquid cooling channel (1131). The first liquid cooling channel (1131) is used to contain a cooling medium. The first core (1111) is immersed in the cooling medium so that the first core (1111) is in direct contact with the cooling medium. The second cable (112) includes a second core (1121) and a second liquid cooling channel (1132). The second core (1121) and the first core (1111) have opposite polarities. The second liquid cooling channel (1132) is used to contain the cooling medium, which is used to provide liquid cooling heat dissipation for the second core (1121). The gun head (120), the first cable (111) and the second cable (112) are both electrically connected to the gun head (120); The cooling medium is a non-insulating liquid cooling medium. It also includes a liquid guide tube (1133), one end of which is connected to the first liquid cooling channel (1131), and the other end of which is connected to the second liquid cooling channel (1132); The first liquid cooling channel (1131) and the second liquid cooling channel (1132) are respectively used to connect with the liquid supply end (113a) and the liquid return end (113b) of the cooling capacity distribution unit (230); The second cable (112) includes an insulating sleeve (1122), the interior of which forms the second liquid cooling channel (1132), and the second wire core (1121) is located outside the insulating sleeve (1122); Alternatively, the second cable (112) includes an insulating sleeve (1122), the second core (1121) is located inside the insulating sleeve (1122), and the second liquid cooling channel (1132) is located outside the insulating sleeve (1122).

2. The charging gun (100) according to claim 1, characterized in that, The number of the first cable (111) and the second cable (112) is one, or the number of the first cable (111) and the second cable (112) is multiple.

3. The charging gun (100) according to claim 1 or 2, characterized in that, It also includes a return pipe (113), which is used to communicate with the cooling capacity distribution unit (230). The first liquid cooling channel (1131) and the second liquid cooling channel (1132) are both connected to the return pipe (113). The cooling medium in the first liquid cooling channel (1131) and the cooling medium in the second liquid cooling channel (1132) flow back to the cooling capacity distribution unit (230) through the return pipe (113).

4. The charging gun (100) according to claim 1 or 2, characterized in that, It also includes a first liquid return channel (101), one end of which is connected to the first liquid cooling channel (1131), and the other end of which is connected to the cooling capacity distribution unit (230). The cooling working fluid of the first liquid cooling channel (1131) flows back to the cooling capacity distribution unit (230) through the first liquid return channel (101); and / or, It also includes a second liquid return channel (102), one end of which is connected to the second liquid cooling channel (1132), and the other end of which is connected to the cooling capacity distribution unit (230). The cooling working fluid of the second liquid cooling channel (1132) flows back to the cooling capacity distribution unit (230) through the second liquid return channel (102).

5. The charging gun (100) according to claim 1 or 2, characterized in that, The first cable (111) includes a first outer sheath (1112), which is sleeved on the outside of the first core (1111). The first outer sheath (1112) and the first core (1111) form a first liquid cooling channel (1131) to accommodate the cooling medium, and the cooling medium immerses the first core (1111).

6. The charging gun (100) according to claim 3, characterized in that, The first cable (111) includes a first outer sheath (1112), which is sleeved on the outside of the first core (1111). The first outer sheath (1112) and the first core (1111) form a first liquid cooling channel (1131) to accommodate the cooling medium, and the cooling medium immerses the first core (1111).

7. The charging gun (100) according to claim 4, characterized in that, The first cable (111) includes a first outer sheath (1112), which is sleeved on the outside of the first core (1111). The first outer sheath (1112) and the first core (1111) form a first liquid cooling channel (1131) to accommodate the cooling medium, and the cooling medium immerses the first core (1111).

8. The charging gun (100) according to any one of claims 1-2 and 6-7, characterized in that, The gun head (120) includes a cold plate (114), which is located at the first end (110a) of the gun head (120), and the second wire core (1121) and the second liquid cooling channel (1132) are separated at the first end (110a); The second wire core (1121) is electrically connected to the gun head (120), and the second liquid cooling channel (1132) is connected to the cold plate (114).

9. The charging gun (100) according to claim 3, characterized in that, The gun head (120) includes a cold plate (114), which is located at the first end (110a) of the gun head (120), and the second wire core (1121) and the second liquid cooling channel (1132) are separated at the first end (110a); The second wire core (1121) is electrically connected to the gun head (120), and the second liquid cooling channel (1132) is connected to the cold plate (114).

10. The charging gun (100) according to claim 4, characterized in that, The gun head (120) includes a cold plate (114), which is located at the first end (110a) of the gun head (120), and the second wire core (1121) and the second liquid cooling channel (1132) are separated at the first end (110a); The second wire core (1121) is electrically connected to the gun head (120), and the second liquid cooling channel (1132) is connected to the cold plate (114).

11. The charging gun (100) according to claim 5, characterized in that, The gun head (120) includes a cold plate (114), which is located at the first end (110a) of the gun head (120), and the second wire core (1121) and the second liquid cooling channel (1132) are separated at the first end (110a); The second wire core (1121) is electrically connected to the gun head (120), and the second liquid cooling channel (1132) is connected to the cold plate (114).

12. The charging gun (100) according to claim 8, characterized in that, There are multiple second cables (112), and the second core (1121) of the multiple second cables (112) is electrically connected to the gun head (120) through an adapter (1124), and the adapter (1124) corresponds to the cold plate (114).

13. The charging gun (100) according to any one of claims 9-11, characterized in that, There are multiple second cables (112), and the second core (1121) of the multiple second cables (112) is electrically connected to the gun head (120) through an adapter (1124), and the adapter (1124) corresponds to the cold plate (114).

14. The charging gun (100) according to any one of claims 1-2, 6-7, and 9-12, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

15. The charging gun (100) according to claim 3, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

16. The charging gun (100) according to claim 4, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

17. The charging gun (100) according to claim 5, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

18. The charging gun (100) according to claim 8, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

19. The charging gun (100) according to claim 13, characterized in that, The gun head (120) includes a first terminal (121) and a second terminal (122), the first cable (111) corresponds to the first terminal (121), the first wire core (1111) is electrically connected to the first terminal (121), and the first liquid cooling channel (1131) extends into the interior of the first terminal (121).

20. A charging device (10), characterized in that, include: The charging gun (100) as described in any one of claims 1 to 19. The cooling distribution unit (230) is connected to the ends of the first cable (111) and the second cable (112) away from the gun head (120). The cooling distribution unit (230) is used to provide cooling fluid to the charging gun (100).

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