Charging gun and charging equipment

Abstract

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

Description

Technical Field

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

[0002] The cable of a charging gun generally includes a conductive wire core and an outer insulating layer for covering the conductive wire core. When current passes through the cable, heat is generated due to the impedance of the conductive wire core itself. When the temperature of the conductive wire core is too high, it is likely to reduce the current-carrying capacity of the cable, resulting in limited charging power. Moreover, it is also likely to cause potential safety hazards.

[0003] Therefore, in order to solve the problem of cable temperature rise, liquid-cooled cables are usually used in charging guns. The liquid-cooled cable has a channel inside for the cooling medium to flow through, and the cooling medium can cool and dissipate heat from the conductive wire core through its flow. However, during the long-term high-power charging process of existing charging guns, there are still problems of poor heat dissipation effect, resulting in too high temperature and affecting the charging efficiency and service life. Therefore, there is an urgent need for a charging gun with good heat dissipation effect. Summary of the Invention

[0004] The embodiments of the present application provide a charging gun and a charging device, which can solve the problem of poor heat dissipation effect of the charging gun.

[0005] In a first aspect, the embodiments of the present application provide a charging gun, including a first cable, a second cable, and a gun head. The first cable includes a first wire core and a first liquid-cooling channel for accommodating a cooling medium, and the first wire core is immersed in the cooling medium. The second cable includes a second wire core and a second liquid-cooling channel, the second wire core has the opposite polarity to the first wire core, the second liquid-cooling channel is for accommodating the cooling medium, and the cooling medium is used for liquid-cooling and dissipating heat from the second wire core. Both the first cable and the second cable are electrically connected to the gun head.

[0006] For the charging gun provided by the embodiments of the present application, the cooling medium can circulate in the first liquid-cooling channel and the second liquid-cooling channel. Since the first wire core can be immersed in the cooling medium in the first liquid-cooling channel, direct and sufficient contact can be made between the first wire core and the cooling medium. Therefore, the heat dissipation effect on the first wire core can be more effectively improved. Moreover, the cooling medium in the second liquid-cooling channel can continuously perform liquid-cooling and dissipating heat on the second wire core to ensure the heat dissipation effect of the second wire core.

[0007] It is easy to understand that the first cable and the second cable can be arranged outside the insulating protective sleeve. The first cable and the second cable can be in contact with each other. Therefore, when the temperature of one of the first cable and the second cable is relatively high, heat will accumulate in the insulating protective sleeve, resulting in an excessive temperature, which will affect the charging performance. In the embodiment of the present application, since the first core can be in direct and sufficient contact with the cooling working fluid, the first core has a good heat dissipation effect, which is beneficial to reducing the heat in the insulating protective sleeve, thereby ensuring the charging performance of the charging gun.

[0008] Therefore, the first core and the second core in the embodiment of the present application can have a good heat dissipation effect, so that the charging gun can have a large output current, thereby meeting the charging power of the electric vehicle and shortening the charging time.

[0009] In a possible implementation manner, 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 also be multiple.

[0010] When the number of the first cable and the second cable is multiple, taking the number of the first cable as multiple as an example, the first cores in the multiple first cables can all be used to transmit current. It is easy to understand that the larger the wire diameter of the first core, the larger the charging power can be satisfied, which is beneficial to shortening the charging time. However, increasing the wire diameter of the first core has a poor heat dissipation effect on the overall first core. For example, when the cooling working fluid is distributed on the outer wall of the first core, the heat dissipation effect in the central region of the first core is poor. And the larger the wire diameter of the first core, the larger the wire diameter of the first cable, and the larger the overall outer diameter of the insulating protective sleeve. However, the outer diameter of the insulating protective sleeve usually has an upper limit. Therefore, the wire diameter of the first core also has an upper limit, which limits the maximum output current of the first core, thereby affecting the charging power and increasing the charging time.

[0011] Therefore, by setting the number of the first cable as multiple, a large charging power can be satisfied. And the wire diameter of the first core in each first cable does not need to be set too large. Each first core is configured with a first liquid cooling channel for immersion cooling of each first core, so that each first core can have a good heat dissipation effect, and thus the temperature of each first core will not be too high.

[0012] In a possible implementation manner, the cooling working fluid is a non-insulating liquid cooling working fluid.

[0013] It should be noted that the non-insulating liquid cooling working fluid can refer to a cooling working fluid including water. Since water has conductivity, in the embodiment of the present application, the liquid cooling working fluid containing water is defined as the non-insulating liquid cooling working fluid.

[0014] In the embodiments of the present application, since the cooling working medium contains water, and water has advantages such as a large specific heat capacity value, small viscosity, high fluidity, and strong heat dissipation ability. Therefore, by immersing the first wire core in the cooling working medium, the heat dissipation effect on the first wire core can be more effectively improved, thereby improving the heat dissipation effect of the charging gun.

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

[0016] Compared with insulating materials such as fluorinated liquid and silicone oil in the insulating working medium as the cooling medium, on the one hand, the cooling working medium provided by the embodiments of the present application can have better fluidity, so as to have a better heat dissipation effect on both the first wire core and the second wire core. On the other hand, the material cost of the cooling working medium can also be reduced. Therefore, the embodiments of the present application can provide a charging gun with good heat dissipation effect and low cost, achieving the balance between heat dissipation efficiency and cost.

[0017] In a possible implementation manner, the charging gun may further include a liquid return pipe. The liquid return pipe is used to communicate with the cold quantity distribution unit. Both the first liquid cooling channel and the second liquid cooling channel are communicated with the liquid return pipe. The cooling working medium in the first liquid cooling channel and the cooling working medium in the second liquid cooling channel flow back to the cold quantity distribution unit through the liquid return pipe.

[0018] In the embodiments of the present application, the cold quantity distribution unit can be used to provide and recover the cooling working medium for the charging gun, so that the cooling working medium can circulate in the charging gun, thereby realizing the continuous heat dissipation of the first wire core and the second wire core. The liquid return pipe is connected to the cold quantity distribution unit. After the cooling working medium flows through the charging gun, it can flow back into the cold quantity distribution unit through the liquid return pipe.

[0019] When both the first cable and the second cable are one, two liquid supply ends can be respectively led out from the cold quantity distribution unit to respectively provide the cooling working medium for the first cable and the second cable. The cooling working medium flows in the first liquid cooling channel to immerse the first wire core, thereby realizing the heat dissipation of the first wire core. The cooling working medium entering the second liquid cooling channel can dissipate heat from the second wire core. After the cooling working medium flowing through the first liquid cooling channel and the cooling working medium flowing through the second liquid cooling channel complete the heat dissipation effect on the first wire core and the second wire core, the cooling working medium can flow back to the cold quantity distribution unit through the same liquid return pipe.

[0020] When the number of the first cables and the second cables is multiple, for example, when the number of the first cables and the second cables is both two, two liquid supply ends can be respectively led out on the cold quantity distribution unit. One of the liquid supply ends can respectively provide cooling working medium for the first liquid cooling channels of the two first cables, and the other liquid supply end can respectively provide cooling working medium for the second liquid cooling channels of the two second cables. After the cooling working medium in the two first liquid cooling channels respectively dissipates heat from the first cable cores, and after the cooling working medium in the two second liquid cooling channels respectively dissipates heat from the second cable cores, the cooling working medium can flow back to the cold quantity distribution unit through a liquid return pipe.

[0021] Among them, it is easy to understand that the way of flowing back to the cold quantity distribution unit through a liquid return pipeline can reduce the flow resistance of the cooling working medium flowing back to the cold quantity distribution unit, so as to improve the circulation efficiency of the cooling working medium, thereby improving the heat dissipation efficiency of the charging gun.

[0022] In a possible implementation manner, the charging gun further includes a liquid guiding pipe, one end of the liquid guiding pipe is communicated with the first liquid cooling channel, and the other end of the liquid guiding pipe is communicated with the second liquid cooling channel.

[0023] In the embodiment of the present application, the liquid guiding pipe can communicate the first liquid cooling channel and the second liquid cooling channel. The coolant can flow in the first liquid cooling channel and the second liquid cooling channel.

[0024] Specifically, when both the first cable and the second cable are one, the cold quantity distribution unit can be provided with a liquid supply end and a liquid return end. The liquid supply end and the liquid return end can be respectively communicated with the first liquid cooling channel and the second liquid cooling channel. The cold quantity distribution unit provides cooling working medium for one of the first liquid cooling channel and the second liquid cooling channel through the liquid supply end. When the cooling working medium finishes dissipating heat from the first cable core and the second cable core, it can flow back to the cold quantity distribution unit through the other of the first liquid cooling channel and the second liquid cooling channel.

[0025] When both the first cables and the second cables are two, the cold quantity distribution unit can be provided with a liquid supply end and a liquid return end. The cold quantity distribution unit can supply liquid to 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 the two first liquid cooling channels, and the cooling working medium in the first liquid cooling channels can respectively perform immersion heat dissipation on the two first cable cores. Then, the cooling working medium can enter the second liquid cooling channels of the two second cables through the liquid guiding pipe to respectively dissipate heat from the second cable cores. The cooling working medium can flow through the first liquid cooling channels, the second liquid cooling channels, and then flow back to the liquid return end of the cold quantity distribution unit.

[0026] In a possible implementation manner, the second cable is used to be connected to the liquid supply end of the cold quantity distribution unit, the first cable is used to be connected to the liquid return end of the cold quantity distribution unit, and the cooling working medium flows through the second liquid cooling channel, the liquid guiding pipe and the first liquid cooling channel in sequence.

[0027] In the embodiment of the present application, the cooling working fluid in the second liquid cooling channel is spaced from the second wire core by an insulating material. Moreover, the cooling working fluid in the first liquid cooling channel can be in direct contact with the first wire core. Therefore, the heat absorption effect of the cooling working fluid on the second wire core is lower than that on the first wire core. In other words, the temperature increase of the cooling working fluid after flowing through the second liquid cooling channel is lower than that after flowing through the first liquid cooling channel. Therefore, by arranging for the cooling working fluid to flow through the second liquid cooling channel first and then through the first liquid cooling channel, the cooling working fluid can be reasonably utilized.

[0028] It should be noted that since the cooling working fluid is in direct contact with the first wire core, although the cooling working fluid can have a certain temperature increase after flowing through the second liquid cooling channel, the cooling working fluid can still absorb the heat generated by the first wire core to dissipate heat from the first wire core. Moreover, it can make the temperatures of the first wire core and the second wire core tend to be balanced, reducing the possibility that the charging performance of the charging gun is affected due to too high or too low temperature of one of them.

[0029] In a possible implementation manner, the charging gun further includes a first liquid return channel. One end of the first liquid return channel is communicated with the first liquid cooling channel, and the other end of the first liquid return channel is used for communicating with the cold quantity distribution unit. The cooling working fluid in the first liquid cooling channel returns to the cold quantity distribution unit through the first liquid return channel.

[0030] In the embodiment of the present application, the liquid supply end of the cold quantity distribution unit can supply the cooling working fluid to the first liquid cooling channel. After the cooling working fluid in the first liquid cooling channel submerges the first wire core to dissipate heat from the first wire core, the cooling working fluid can return to the cold quantity distribution unit through the first liquid return channel. In other words, the first liquid cooling channel and the cold quantity distribution unit can realize the circulation of the cooling working fluid through the first liquid return channel.

[0031] In a possible implementation manner, the charging gun further includes a second liquid return channel. One end of the second liquid return channel is communicated with the second liquid cooling channel, and the other end of the second liquid return channel is used for communicating with the cold quantity distribution unit. The cooling working fluid in the second liquid cooling channel returns to the cold quantity distribution unit through the second liquid return channel.

[0032] The liquid supply end of the cold quantity distribution unit can supply the cooling working fluid to the second liquid cooling channel. After the cooling working fluid in the second liquid cooling channel dissipates heat from the second wire core, the cooling working fluid can return to the cold quantity distribution unit through the second liquid return channel. In other words, the second liquid cooling channel and the cold quantity distribution unit can realize the circulation of the cooling working fluid through the second liquid return channel.

[0033] In a possible implementation manner, the first cable includes a first outer sheath. The first outer sheath is sleeved outside the first wire core, and a first liquid cooling channel is formed between the first outer sheath and the first wire core to accommodate the cooling working fluid, and the cooling working fluid submerges the first wire core.

[0034] In the embodiments of the present application, the first outer sheath can protect the first core, and the first outer sheath can accommodate a cooling working fluid. A radial gap can be provided between the first outer sheath and the first core to form a first liquid cooling channel, so that the cooling working fluid in the first liquid cooling channel can immerse the first core. The cooling working fluid and the first core can be in full contact, so that when the cooling working fluid flows in the first liquid cooling channel, the heat of the first core can be transferred out of the charging gun to the outside.

[0035] It should be noted that no external insulation layer is provided on the outer wall of the first core. Since the cooling working fluid is in direct contact with the first core, during the heat dissipation of the first core, the heat of the first core can be directly transferred to the cooling working fluid without first being transferred to the external insulation layer, thereby achieving efficient heat dissipation of the first core.

[0036] In a possible implementation manner, the second cable includes an insulating sleeve, and a second liquid cooling channel is formed inside the insulating sleeve, and the second core is located outside the insulating sleeve.

[0037] In the embodiments of the present application, a cooling working fluid is provided inside the insulating sleeve. The second core is insulated from the cooling working fluid through the insulating sleeve for heat dissipation. Among them, the insulating sleeve can be located inside the second core. The cooling working fluid inside the insulating sleeve can dissipate heat from the area near the middle of the second core. The heat on the second core can be transferred to the middle area and then removed by the cooling working fluid inside the insulating sleeve.

[0038] In some examples, the second cable may further include a second outer sheath. The second outer sheath can cover at least part of the outside of the second core to protect the second core.

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

[0040] In the embodiments of the present application, the cooling working fluid can be located on the outer periphery of the second core to dissipate heat from the outer periphery of the second core. The heat on the second core can diffuse from the middle to the outer periphery and then be dissipated by the cooling working fluid 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 a possible implementation manner, the gun head further includes a cold plate, and the cold plate is located at the first end of the gun head. The second core and the second liquid cooling channel are separated at the first end. Among them, the second core is electrically connected to the gun head, and the second liquid cooling channel is communicated with the cold plate.

[0043] In the embodiment of the present application, 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 providing the second liquid cooling channel in communication with 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 gun head, the cold plate can dissipate heat from the second wire core connected to the cold plate.

[0044] Specifically, since the second wire core is connected to the wall surface of the cold plate, the heat on the second wire core can be transferred to the cold plate. And, since the second liquid cooling channel is connected to the cold plate, the cooling medium in the second liquid cooling channel can enter the cold plate. The cooling medium flowing in the cold plate can dissipate heat from the second wire core connected to the wall surface of the cold plate, so that the heat on the second wire core can first be transferred to the cold plate, and then the cooling medium flowing in the cold plate can be used to dissipate heat from the separated second wire core.

[0045] Therefore, before the second liquid cooling channel is separated from the second wire core, the cooling medium in the second liquid cooling channel can dissipate heat from the second wire core. After the second liquid cooling channel is separated from the second wire core, the cold plate can be used to dissipate heat from the second wire core, thereby ensuring the heat dissipation effect on the entire second wire core.

[0046] In a possible implementation manner, the number of the second cables is multiple. The second wire cores in the multiple second cables are electrically connected to the gun head through an adapter, and the adapter corresponds to the cold plate.

[0047] In the embodiment of the present application, the adapter can have conductivity for electrically connecting the second wire core to the gun head, so that when the gun head is connected to the electric vehicle, the second wire core can transmit current through the adapter.

[0048] Since the adapter can be used for the electrical connection between the second wire core and the gun head, by providing the adapter, the adapter can have a larger surface for connection to the cold plate, so that the cold plate can dissipate heat from the adapter, avoiding the temperature of the adapter being too high and affecting the working performance of the second cable and the gun head.

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

[0050] In the embodiment of the present application, by electrically connecting the first terminal and the second terminal to the first wire core and the second wire core respectively, the electrical connection between the gun head and the first cable and the second cable can be realized. The first terminal and the second terminal of the gun head can be used for plugging into the charging structure on the vehicle. Therefore, when the gun head is plugged into the vehicle, the first cable, the second cable and the gun head can provide electrical energy for the vehicle.

[0051] Among them, the first wire core can extend into the gun head to be electrically connected to the first terminal. In other words, a part of the first wire core can be located inside the gun head. Since the first wire core can be in immersion contact with the cooling working fluid, and the first liquid cooling channel can extend to the inside of the first terminal, the cooling working fluid can also enter the gun head. The cooling working fluid can also perform liquid cooling and heat dissipation on the first terminal, so as to effectively avoid the possibility that the temperature of the first terminal is too high, which may affect the charging performance and charging safety when the first terminal is inserted into the charging structure of the vehicle.

[0052] In a second aspect, an embodiment of the present application provides a charging device, including a charging gun and a cooling capacity distribution unit. The ends of the first cable and the second cable away from the gun head are connected to the cooling capacity distribution unit, and the cooling capacity distribution unit is used to provide a cooling working fluid for the charging gun.

[0053] For the charging device provided by the embodiment of the present application, since the charging gun has a good liquid cooling and heat dissipation effect, the stability and reliability during the application of the charging device can be improved. Among them, the cooling capacity distribution unit can be used to perform highly efficient liquid cooling and heat dissipation on the first wire core and the second wire core in the charging gun, so that the charging device can provide a large charging current for the vehicle, thereby realizing fast charging of the vehicle and improving the user experience. Description of the Drawings

[0054] Figure 1 is a schematic structural diagram of the charging device provided by the embodiment of the present application;

[0055] Figure 2 is a cross-sectional structural diagram of a charging gun provided by the embodiment of the present application, where the first cable and the second cable are integrated;

[0056] Figure 3 is a partial cross-sectional structural diagram of a charging device provided by the embodiment of the present application, where the first cable and the second cable are integrated;

[0057] Figure 4 is a cross-sectional structural diagram of a charging gun provided by the embodiment of the present application, where the first cable and the second cable are separated;

[0058] Figure 5 is a partial cross-sectional structural diagram of a charging device provided by the embodiment of the present application, where the first cable and the second cable are separated;

[0059] Figure 6 is a partial cross-sectional structural diagram of another charging device provided by the embodiment of the present application, where the first cable and the second cable are integrated;

[0060] Figure 7Another charging device provided by an embodiment of the present application, a partial sectional structural schematic diagram of two first cables and second cables;

[0061] Figure 8 Another charging device provided by an embodiment of the present application, a partial sectional structural schematic diagram of one first cable and second cable;

[0062] Figure 9 A partial three-dimensional structural schematic diagram of two first cables and second cables of a charging gun provided by an embodiment of the present application.

[0063] Explanation of reference numerals:

[0064] 10. Charging device;

[0065] 100. Charging gun;

[0066] 111. First cable; 1111. First core; 1131. First liquid cooling channel; 1112. First outer sheath;

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

[0068] 113. Return pipe; 113a. Liquid supply end; 113b. Return liquid end; 1133. Liquid guide pipe;

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

[0070] 114. Cold plate;

[0071] 115. Insulating protection sleeve;

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

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

[0074] 200. Charging pile;

[0075] 210. Charging module;

[0076] 220. Outer shell;

[0077] 230. Cold quantity distribution unit. Detailed implementation manners

[0078] The charging device provided by the embodiments of the present application can be used for the energy replenishment of electric vehicles. The main function of the charging device is to convert the alternating current of the power grid into direct current (or maintain alternating current), and then transmit it to the battery of the electric vehicle through a charging cable to provide energy replenishment for the electric vehicle, so that the electric vehicle can store enough power to support its operation.

[0079] According to the power supply method, the charging device can include an AC charging device and a DC charging device. Among them, the AC charging device provides a relatively small current and a longer charging time. The AC charging device is flexibly installed and can be applied to places such as homes and parking lots. The DC charging device can provide a large current and a fast charging method, and can be applied to public places that require fast charging. In the embodiments of the present application, the charging device is taken as an example of a DC charging device for description.

[0080] The charging gun is a device for realizing power transmission between the charging device and the electric vehicle. With the rapid development of the new energy vehicle industry, the cruising range of electric vehicles has been continuously improved, and the battery capacity has also become larger and larger. Increasing the charging current is a common method to achieve high-power charging. However, the increase in the charging current easily leads to an increase in the heat dissipation of the charging gun. Therefore, liquid cooling technology is generally used to dissipate heat from the wire core of the charging gun to achieve the purpose of reducing heat dissipation.

[0081] Figure 1 It is a schematic structural diagram of the charging device 10 provided by the embodiments of the present application. Refer to Figure 1 , the charging device 10 can include a charging gun 100 and a charging pile 200. The charging pile 200 is generally set in the place of the charging station, and the charging pile 200 charges the electric vehicle through the charging gun 100. The charging pile 200 includes a charging module 210 and a cooling capacity distribution unit 230. The charging module 210 can be used to provide electric energy to the charging gun 100. The cooling capacity distribution unit 230 can be used to provide a cooling medium at a predetermined temperature to the charging gun 100. The cooling capacity distribution unit 230 and the charging gun 100 can form a liquid cooling circulation loop to continuously perform liquid cooling heat dissipation on the charging gun 100.

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

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

[0084] Specifically, referring to Figure 2 , the first cable 111 includes a first core 1111 with a conductive function. The second cable 112 includes a second core 1121 with a conductive function. The first core 1111 and the second core 1121 may transmit the electric quantity of the charging module 210 to the gun head 120 and then to the electric vehicle through the gun head 120. When current is passed through, the conductive core will generate heat due to its own impedance. Therefore, a first liquid cooling channel 1131 and a second liquid cooling channel 1132 respectively communicating with the cooling capacity distribution unit 230 are provided in the first and second cables 111 and 112. By flowing the cooling medium in the first liquid cooling channel 1131, the cooling medium can exchange heat with the first core to take away the heat generated by the first core. By flowing the cooling medium in the second liquid cooling channel 1132, the cooling medium can exchange heat with the second core 1121 to take away the heat generated by the second core 1121, thereby reducing the heat of the charging gun 100 during the charging process.

[0085] In some examples, a water pump (not shown in the figure) may also be provided in the charging pile 200. The water pump may be used to provide power for the flow of the cooling medium so that the cooling medium can be transported from the cooling capacity distribution unit 230 to the charging gun 100.

[0086] In some examples, a heat exchanger (not shown in the figure) may also be provided inside the charging pile 200. When the cooling medium flows through the first core 1111 and the second core 1121, it can absorb the heat of the first core and the second core 1121 to form a cooling medium with a higher temperature. The heat exchanger may be used to cool down the cooling medium with a higher temperature, so as to continuously provide a cooling medium with a lower temperature for the first core and the second core 1121.

[0087] In the embodiments of the present application, by immersing the first wire core 1111 in the cooling working fluid, direct contact between the first wire core 1111 and the cooling working fluid can be achieved. Therefore, the efficiency of the cooling working fluid in absorbing the heat of the first wire core 1111 can be improved, so as to enhance the heat dissipation effect on the first wire core 1111, thereby reducing the possibility that the temperature of the charging gun 100 is too high during charging, which may affect the charging efficiency and charging performance.

[0088] Specifically, the first wire core 1111 and the second wire core 1121 can represent wire cores with opposite polarities. In other words, one of the first wire core 1111 and the second wire core 1121 can be the positive wire core, and the other can be the negative wire core. Among them, the first wire core 1111 can be immersed in the cooling working fluid within the first liquid cooling channel 1131. Therefore, the cooling working fluid can be in full contact with the first wire core 1111, which is beneficial to improving the heat dissipation efficiency of the first wire core 1111. Moreover, the cooling working fluid within the second liquid cooling channel 1132 can perform liquid cooling and heat dissipation for the second wire core 1121 to reduce the possibility that the temperature of the second wire core 1121 is too high during charging. Therefore, during the charging process, the temperatures of both the first wire core 1111 and the second wire core 1121 can achieve good heat dissipation effects, so as to maintain the charging efficiency and charging reliability of the charging gun 100.

[0089] The charging gun 100 and the charging device 10 provided by the embodiments of the present application will be described in detail below through specific implementation manners.

[0090] See Figures 2 to 9 As shown, the embodiments of the present application provide a charging gun 100. The charging gun 100 can 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 can include a first wire core 1111 and a first liquid cooling channel 1131. The first liquid cooling channel 1131 is used to accommodate the cooling working fluid. The first wire core 1111 can be immersed in the cooling working fluid within the first liquid cooling channel 1131 to dissipate heat from the first wire core 1111. It should be noted that the first wire core 1111 being immersed in the cooling working fluid means that there is direct contact between the cooling working fluid and the first wire core 1111.

[0092] The second cable 112 can include a second wire core 1121 and a second liquid cooling channel 1132. The second wire core 1121 and the first wire core 1111 have opposite polarities. The second liquid cooling channel 1132 is used to accommodate the cooling working fluid. The cooling working fluid is used to perform liquid cooling and heat dissipation for the second wire core 1121.

[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 core 1111. The second cable 112 can be electrically connected to the gun head 120 through the second core 1121.

[0094] In the embodiment of the present application, the cooling working fluid can circulate in the first liquid cooling channel 1131 and the second liquid cooling channel 1132. Since the first core 1111 can be immersed in the cooling working fluid in the first liquid cooling channel 1131, the first core 1111 and the cooling working fluid can be in direct and sufficient contact. Therefore, the heat dissipation effect of the first core 1111 can be more effectively improved. Moreover, the cooling working fluid in the second liquid cooling channel 1132 can continuously perform liquid cooling and heat dissipation on the second core 1121 to ensure the heat dissipation effect of the second core 1121.

[0095] It is easy to understand that the first cable 111 and the second cable 112 can be coated on the outside of 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 one of the first cable 111 and the second cable 112 is relatively high, heat will accumulate in the insulating protective sleeve 115, resulting in too high a temperature, thus affecting the charging performance. In the embodiment of the present application, since the first core 1111 can be in direct and sufficient contact with the cooling working fluid, the first core 1111 has a good heat dissipation effect, which is beneficial to reducing the heat in the insulating protective sleeve 115, thereby ensuring the charging performance of the charging gun 100.

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

[0097] It should be noted that in the embodiment of the present application, the manner in which the cooling working fluid immerses the first core 1111 is not limited. For example, the cooling working fluid can immerse the outer periphery of the first core 1111 to be in direct contact with the outer periphery of the first core 1111. Or, the inside of the first core 1111 can be filled with the cooling working fluid to be in direct contact with the inside of the first core 1111.

[0098] In some examples, the cooling working fluid in the second liquid cooling channel 1132 and the second core 1121 can also be in an immersion contact. Or, the cooling working fluid in the second liquid cooling channel 1132 and the second core 1121 can be insulated and isolated by an insulating material, which is not specifically limited in this embodiment.

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

[0100] In some examples, when the number of the first cable 111 and the second cable 112 is multiple, taking the number of the first cable 111 as multiple for example, the first cores 1111 in multiple first cables 111 can all be used to transmit current. It is easy to understand that the larger the wire diameter of the first core 1111, the larger the charging power that can be satisfied, which is beneficial to shortening the charging duration. However, increasing the wire diameter of the first core 1111 has a poor heat dissipation effect on the overall first core 1111. For example, when the cooling working medium is distributed on the outer wall of the first core 1111, the heat dissipation effect in the central region of the first core 1111 is poor. Moreover, the larger the wire diameter of the first core 1111, the larger the wire diameter of the first cable 111, and the larger the overall outer diameter of the insulation protection sleeve 115. However, the outer diameter of the insulation protection sleeve 115 usually has an upper limit. Therefore, the wire diameter of the first core 1111 also has an upper limit, which limits the maximum output current of the first core 1111, and further affects the charging power and increases the charging duration.

[0101] Therefore, by setting the number of the first cables 111 to be multiple, a larger charging power can be satisfied. And, the wire diameter of the first core 1111 in each first cable 111 does not need to be set to be large. Each first core 1111 is configured with a first liquid cooling channel 1131 for performing immersion heat dissipation on each first core 1111, so that each first core 1111 can have a good heat dissipation effect, and thus the temperature of each first core 1111 will not be too high.

[0102] In some examples, when the number of the first cables 111 is multiple, the respective first liquid cooling channels 1131 in multiple first cables 111 can all converge at the gun head 120 or near the gun head 120. The cooling working medium in multiple first liquid cooling channels 1131 can enter the gun head 120, so that when the gun head 120 is electrically connected to the electric vehicle, the cooling working medium can also dissipate heat from the gun head 120.

[0103] In some realizable ways, the cooling working medium in the embodiments of the present application can be a non-insulating liquid cooling working medium.

[0104] It should be noted that the non-insulating liquid cooling working medium can refer to a cooling working medium including water. Since water has conductivity, in the embodiments of the present application, the liquid cooling working medium containing water is defined as the non-insulating liquid cooling working medium.

[0105] In the embodiments of the present application, since the cooling working fluid contains water, and water has the advantages of a large specific heat capacity value, low viscosity, high fluidity, and strong heat dissipation ability, therefore, by immersing the first wire core 1111 in the cooling working fluid, the heat dissipation effect of the first wire core 1111 can be more effectively improved, thereby improving the heat dissipation effect of the charging gun 100.

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

[0107] In particular, compared with insulating materials such as fluorinated liquid and silicone oil in insulating working fluids as cooling media, on the one hand, the cooling working fluid provided in the embodiments of the present application can have better fluidity, so as to have better heat dissipation effects on both the first wire core 1111 and the second wire core 1121. On the other hand, the material cost of the cooling working fluid can also be reduced. Therefore, the embodiments of the present application can provide a charging gun 100 with good heat dissipation effect and low cost, achieving the balance between heat dissipation efficiency and cost.

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

[0109] It should be noted that since the cooling working fluid contains water and water has electrical conductivity, when the first wire core 1111 is immersed in the cooling working fluid, the cooling working fluid in the second liquid cooling channel 1132 can be insulated from the second wire core 1121, so that it is not easy for electrical connection to occur between the first wire core 1111 and the second wire core 1121. In other words, if the first wire core 1111 is in direct contact with the cooling working fluid, then the second wire core 1121 is insulated from the cooling working fluid.

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

[0111] Among them, the embodiments of the present application do not limit the method of insulating the cooling working fluid from the second wire core 1121. For example, the cooling working fluid can be connected to the second wire core 1121 through an insulating material. The cooling working fluid can be located inside the second wire core 1121 or outside the second wire core 1121.

[0112] In some feasible ways, refer to Figure 2 、 Figure 3 and Figure 5As shown, the charging gun 100 may further include a liquid return pipe 113. The liquid return pipe 113 may be used to communicate with the cold quantity distribution unit 230. Both the first liquid cooling channel 1131 and the second liquid cooling channel 1132 communicate with the liquid 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 cold quantity distribution unit 230 through the liquid return pipe 113.

[0113] Among them, the cold quantity distribution unit 230 may be used to supply and recover the cooling medium for the charging gun 100, so that the cooling medium can circulate in the charging gun 100, thereby realizing continuous heat dissipation of the first wire core and the second wire core 1121. The liquid return pipe 113 is connected to the cold quantity distribution unit 230. After the cooling medium flows through the charging gun 100, it can flow back into the cold quantity distribution unit 230 through the liquid return pipe 113.

[0114] Specifically, referring to Figure 2 and Figure 3 As shown, when both the first cable 111 and the second cable 112 are one, two liquid supply ends 113a may be respectively led out from the cold quantity distribution unit 230 to supply the 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 realizing heat dissipation of the first wire core 1111. When the cooling medium enters the second liquid cooling channel 1132, it can dissipate heat from the second wire core 1121. After the cooling medium flowing through the first liquid cooling channel 1131 and the cooling medium flowing through the second liquid cooling channel 1132 complete the heat dissipation of the first wire core 1111 and the second wire core 1121, the cooling medium can flow back to the cold quantity distribution unit 230 through the same liquid return pipe 113.

[0115] When the number of both the first cables 111 and the second cables 112 is multiple, for example, taking Figure 5 as an example, when the number of both the first cables 111 and the second cables 112 is two, two liquid supply ends 113a may be respectively led out from the cold quantity distribution unit 230. One of the liquid supply ends 113a may supply the cooling medium to the first liquid cooling channels 1131 of the two first cables 111 respectively, and the other liquid supply end 113a may supply the cooling medium to the second liquid cooling channels 1132 of the two second cables 112 respectively. After the cooling medium in the two first liquid cooling channels 1131 respectively completes heat dissipation of the first wire cores 1111, and the cooling medium in the two second liquid cooling channels 1132 respectively completes heat dissipation of the second wire cores 1121, the cooling medium can flow back to the cold quantity distribution unit 230 through a liquid return pipe 113.

[0116] Among them, it is easy to understand that by means of returning to the cold quantity distribution unit 230 through a liquid return pipe 113, the flow resistance of the cooling working medium returning to the cold quantity distribution unit 230 can be reduced, so as to improve the circulation efficiency of the cooling working medium, thereby improving the heat dissipation efficiency of the charging gun 100.

[0117] In some implementable ways, referring to Figure 6 and Figure 7 As shown, the charging gun 100 of the embodiment of the present application may further include a liquid guide pipe 1133. One end of the liquid guide pipe 1133 may be communicated with the first liquid cooling channel 1131. The other end of the liquid guide pipe 1133 may be communicated with the second liquid cooling channel 1132.

[0118] In the embodiment of the present application, the liquid guide pipe 1133 may communicate the first liquid cooling channel 1131 and the second liquid cooling channel 1132. The coolant may flow in the first liquid cooling channel 1131 and the second liquid cooling channel 1132.

[0119] Specifically, referring to Figure 6 As shown, when both the first cable 111 and the second cable 112 are one, the cold quantity distribution unit 230 may be provided with a liquid supply end 113a and a liquid return end 113b. The liquid supply end 113a and the liquid return end 113b may be respectively communicated with the first liquid cooling channel 1131 and the second liquid cooling channel 1132. The cold quantity distribution unit 230 provides a cooling working medium for one of the first liquid cooling channel 1131 and the second liquid cooling channel 1132 through the liquid supply end 113a. When the cooling working medium finishes dissipating heat from the first wire core 1111 and the second wire core 1121, it may return to the cold quantity distribution unit 230 through the other of the first liquid cooling channel 1131 and the second liquid cooling channel 1132.

[0120] Referring to Figure 4 and Figure 7 As shown, when both the first cable 111 and the second cable 112 are two, the cold quantity distribution unit 230 may be provided with a liquid supply end 113a and a liquid return end 113b. The cold quantity distribution unit 230 may supply liquid to two first liquid cooling channels 1131 or two second liquid cooling channels 1132 through the liquid supply end 113a. For example, the liquid supply end 113a may supply liquid to two first liquid cooling channels 1131, and the cooling working medium in the first liquid cooling channel 1131 may respectively perform immersion heat dissipation on two first wire cores 1111. Then, the cooling working medium may enter the second liquid cooling channels 1132 of two second cables 112 through the liquid guide pipe 1133 to respectively dissipate heat from the second wire cores 1121. The cooling working medium may flow through the first liquid cooling channel 1131, the second liquid cooling channel 1132, and then return to the liquid return end 113b of the cold quantity distribution unit 230.

[0121] In some implementable ways, referring to Figure 6 andFigure 7 As shown, the second cable 112 of the embodiment of the present application is used to connect to the liquid supply end 113a of the cold quantity distribution unit 230. The first cable 111 is used to connect to the liquid return end 113b of the cold quantity distribution unit 230. The cooling medium flows through the second liquid cooling channel 1132, the liquid guiding pipe 1133 and the first liquid cooling channel 1131 in sequence.

[0122] In the embodiment of the present application, the cooling medium in the second liquid cooling channel 1132 is spaced from the second wire core 1121 by an insulating material. And, the cooling medium in the first liquid cooling channel 1131 can be in direct contact with 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 increase of the cooling medium after flowing through the second liquid cooling channel 1132 is lower than that after flowing through the first liquid cooling channel 1131. Therefore, by arranging 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 reasonably utilized.

[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 have a certain temperature increase after flowing through the second liquid cooling channel 1132, the cooling medium can still absorb the heat generated by the first wire core 1111 to dissipate heat from the first wire core 1111. And, it can make the temperatures of the first wire core 1111 and the second wire core 1121 tend to be balanced, reducing the possibility that the charging performance of the charging gun 100 is affected due to the temperature of one of them being too high or too low.

[0124] In some realizable ways, as shown in Figure 8 the charging gun 100 may further include a first liquid return channel 101. One end of the first liquid return channel 101 is communicated with the first liquid cooling channel 1131. The other end of the first liquid return channel 101 is used to communicate with the cold quantity distribution unit 230. The cooling medium in the first liquid cooling channel 1131 returns to the cold quantity distribution unit 230 through the first liquid return channel 101.

[0125] In the embodiment of the present application, the liquid supply end 113a of the cold quantity distribution unit 230 can provide the cooling medium for the first liquid cooling channel 1131. After the cooling medium in the first liquid cooling channel 1131 submerges the first wire core 1111 to dissipate heat from the first wire core 1111, the cooling medium can return to the cold quantity distribution unit 230 through the first liquid return channel 101. In other words, the first liquid cooling channel 1131 and the cold quantity distribution unit 230 can realize the circulation of the cooling medium through the first liquid return channel 101.

[0126] In some realizable ways, as shown in 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 communicates with the second liquid cooling channel 1132, and the other end of the second liquid return channel 102 is used to communicate with the cooling capacity distribution unit 230. The cooling medium 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 the embodiment of the present application, the liquid supply end 113a of the cooling capacity distribution unit 230 can provide the cooling medium for the second liquid cooling channel 1132. After the cooling medium in the second liquid cooling channel 1132 dissipates heat from the second wire core 1121, the cooling medium can flow back to the cooling capacity distribution unit 230 through the second liquid return channel 102. In other words, the second liquid cooling channel 1132 and the cooling capacity distribution unit 230 can realize the circulation of the cooling medium through the second liquid return channel 102.

[0128] In some implementable ways, as shown in Figure 2 and Figure 4 the first cable 111 of the embodiment of the present application may include a first outer sheath 1112. The first outer sheath 1112 may be sleeved outside the first wire core 1111. A first liquid cooling channel 1131 may be formed between the first outer sheath 1112 and the first wire core 1111 to accommodate the cooling medium. The cooling medium submerges the first wire core 1111.

[0129] In the embodiment of the present application, the first outer sheath 1112 can protect the first wire core 1111, and the first outer sheath 1112 can accommodate the cooling medium. There may be a radial gap between the first outer sheath 1112 and the first wire core 1111 to form the first liquid cooling channel 1131, so that the cooling medium in the first liquid cooling channel 1131 can submerge the first wire core 1111. The cooling medium and the first wire core 1111 can be in full contact, so that when the cooling medium flows in the first liquid cooling channel 1131, the heat of the first wire core 1111 can be transferred out of the first cable 111.

[0130] It should be noted that no external insulation layer is provided on the outer wall of the first wire core 1111. The cooling medium is in direct contact with the first wire core 1111. Therefore, during the heat dissipation process of the first wire core 1111, the heat of the first wire core 1111 can be directly transferred to the cooling medium without first being transferred to the external insulation layer, so as to achieve efficient heat dissipation of the first wire core 1111.

[0131] In some examples, the first wire core 1111 may be located in the central area of the first outer sheath 1112, so that the cooling medium submerging the first wire core 1111 can be evenly distributed around the first wire core 1111, which is beneficial to realizing uniform heat dissipation of the first wire core 1111. For example, the first wire core 1111 and the first outer sheath 1112 may be coaxially arranged.

[0132] In some realizable ways, refer to Figure 2 and Figure 4 As shown, the second cable 112 may include an insulating sheath 1122. A second liquid cooling channel 1132 may be formed inside the insulating sheath 1122 to accommodate a cooling working fluid, and the second core 1121 is located outside the insulating sheath 1122.

[0133] In the embodiments of the present application, a cooling working fluid is provided inside the insulating sheath 1122. The second core 1121 dissipates heat from the cooling working fluid in a non-contact manner through the insulating sheath 1122. Among them, the insulating sheath 1122 may be located inside the second core 1121. The cooling working fluid inside the insulating sheath 1122 can dissipate heat from the area near the middle of the second core 1121. The heat on the second core 1121 can be transferred to the middle area and then removed by the cooling working fluid inside the insulating sheath 1122.

[0134] In some examples, the insulating sheath 1122 and the first core 1111 may be coaxially arranged to improve the heat dissipation uniformity of the first core 1111. Moreover, the insulating sheath 1122 is located inside the first core 1111, and the overall structure is simple, which is convenient for layout and installation, and is beneficial to reducing the production cost of the first cable 111.

[0135] In some examples, the second cable 112 may further 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 can protect the second core 1121 and the second liquid cooling channel 1132 located inside it.

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

[0137] In the embodiments of the present application, the cooling working fluid may 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 middle to the outer periphery and then be dissipated by the cooling working fluid outside the insulating sheath 1122.

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

[0139] In some realizable ways, refer to Figure 4 、 Figures 5 to 9As shown, the gun head 120 may further include a cold plate 114. The cold plate 114 may be located at the first end 110a of the gun head 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 surface of the cold plate 114, and the second liquid cooling channel 1132 may be connected to the cold plate 114.

[0140] In the embodiment of the present application, the second wire core 1121 and the second liquid cooling channel 1132 can be separated at the first end 110a. The cooling liquid in the second liquid cooling channel 1132 cannot dissipate heat to the second wire core 1121 at the first end 110a. Therefore, by setting the second liquid cooling channel 1132 to be connected to the cold plate 114, the cooling medium in the second liquid cooling channel 1132 can enter the cold plate 114. When the second wire core 1121 is connected to the wall surface of the cold plate 114, the second wire core 1121 connected to the cold plate 114 can be dissipated by 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. In addition, 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 cooling medium flowing in the cold plate 114 can dissipate the heat of the second wire core 1121 connected to the wall of the cold plate 114, so that the heat on the second wire core 1121 can be first transferred to the cold plate 114, and then the cooling medium flows in the cold plate 114 to achieve heat dissipation of the separated second wire core 1121.

[0142] Therefore, before the second liquid cooling channel 1132 is separated from the second core 1121, the cooling medium in the second liquid cooling channel 1132 can dissipate heat for the second core 1121. After the second liquid cooling channel 1132 is separated from the second core 1121, the second core 1121 can be dissipated heat by the cold plate 114, thereby ensuring the heat dissipation effect for the entire second core 1121.

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

[0144] In some possible implementations, see Figure 9 As shown, there may be multiple second cables 112. The second wire cores 1121 in the multiple second cables 112 are electrically connected to the gun head 120 through the adapter 1124. The adapter 1124 corresponds to the cold plate 114.

[0145] In the embodiments of the present application, the adapter 1124 can be conductive to electrically connect the second wire core 1121 to the gun head 120. Thus, 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 providing the adapter 1124, the adapter 1124 can have a relatively large surface for connection to the cold plate 114. Thus, the adapter 1124 can be cooled by the cold plate 114 to prevent the temperature of the adapter 1124 from being too high, which may affect 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 in mutual contact. The heat generated by the second wire cores 1121 of multiple second cables 112 can be transferred to the adapter 1124 and dissipated through the cold plate 114 in mutual contact with the adapter 1124.

[0148] In some implementable ways, as shown in Figure 3 、 Figures 5 to 8 the gun head 120 can 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, 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 the embodiments of the present application, by electrically connecting the first terminal 121 and the second terminal 122 to the first wire core 1111 and the second wire core 1121 respectively, the electrical connection between the gun head 120 and the first cable 111 and the second cable 112 can be achieved. The first terminal 121 and the second terminal 122 of the gun head 120 can be used to plug into the charging structure on the vehicle. Therefore, when the gun head 120 is plugged into the vehicle, the first cable 111, the second cable 112, and the gun head 120 can provide electrical energy for the vehicle.

[0152] Among them, the first wire core 1111 can extend into the gun head 120 to be electrically connected to the first terminal 121. In other words, a part of the first wire core 1111 can be located inside the gun head 120. Since the first wire core 1111 can be in immersion contact with the cooling working medium, and the first liquid cooling channel 1131 can extend into the interior of the first terminal 121, therefore, the cooling working medium can also enter the gun head 120. The cooling working medium can also perform liquid cooling and heat dissipation on the first terminal 121, so as to effectively avoid the possibility that the temperature of the first terminal 121 is too high, which may affect the charging performance and charging safety when the first terminal 121 is inserted into the charging structure of the vehicle.

[0153] Since the second wire core 1121 and the second liquid cooling channel 1132 are separated near the first end 110a, the separated second wire core 1121 can be connected to the second terminal 122 through the adapter 1124. Since the adapter 1124 can be attached to the cold plate 114, after the heat of the second wire core 1121 is transferred to the adapter 1124, it 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 charging structure of the vehicle can be transferred from the second terminal 122 to the adapter 1124, and dissipated through the cold plate 114 connected to the adapter 1124, so that the temperature of the second terminal 122 is not likely to be too high.

[0154] In some examples, a wire arranging rack for fixing the first cable 111 and the second cable 112 can also be provided inside the gun head 120. The first cable 111 and the second cable 112 can be plugged into the wire arranging rack.

[0155] Exemplarily, the wire arranging rack can be respectively provided with insertion ports adapted to the first cable 111 and the second cable 112. The first cable 111 can pass through the corresponding insertion port and be connected to the first terminal 121. The second cable 112 can pass through the corresponding insertion port and be connected to the second terminal 122.

[0156] An embodiment of the present application provides a charging device 10. Refer to Figure 1 As shown, the charging device 10 can include a charging gun 100 and a cooling capacity distribution unit 230.

[0157] The ends of the first cable 111 and the second cable 112 away from the gun head 120 are connected to the cooling capacity distribution unit 230. The cooling capacity distribution unit 230 can be used to provide a cooling working medium for the charging gun 100.

[0158] An embodiment of the present application provides a charging device 10. Since the charging gun 100 has a good liquid cooling and heat dissipation effect, the stability and reliability during the application of the charging device 10 can be improved. Among them, the cooling capacity distribution unit 230 can be used to efficiently perform liquid cooling and heat dissipation on the first wire core 1111 and the second wire core 1121 in the charging gun 100, so that the charging device 10 can provide a large charging current for the vehicle, thereby realizing rapid charging of the vehicle and improving the user experience.

[0159] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A charging gun (100), characterized in that, Comprising: A first cable (111), 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 accommodate a cooling working medium, and the first core (1111) is immersed in the cooling working medium; A second cable (112), 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 accommodate the cooling working medium, and the cooling working medium is used for liquid cooling heat dissipation of the second core (1121); A gun head (120), both the first cable (111) and the second cable (112) are electrically connected to the gun head (120).

2. The charging gun (100) according to claim 1, wherein The cooling working medium is a non-insulating liquid cooling working medium.

3. The charging gun (100) according to claim 1 or 2, characterized in that, It further includes a return pipe (113), the return pipe (113) is used to communicate with a cold quantity distribution unit (230), both the first liquid cooling channel (1131) and the second liquid cooling channel (1132) are communicated with the return pipe (113), and the cooling working medium in the first liquid cooling channel (1131) and the cooling working medium in the second liquid cooling channel (1132) are refluxed to the cold quantity distribution unit (230) through the return pipe (113).

4. The charging gun (100) according to claim 1 or 2, characterized in that, It further includes a liquid guiding pipe (1133), one end of the liquid guiding pipe (1133) is communicated with the first liquid cooling channel (1131), and the other end of the liquid guiding pipe (1133) is communicated with the second liquid cooling channel (1132).

5. The charging gun (100) according to claim 4, wherein The second cable (112) is used to be connected to the liquid supply end (113a) of the cold quantity distribution unit (230), the first cable (111) is used to be connected to the liquid return end (113b) of the cold quantity distribution unit (230), and the cooling working medium flows through the second liquid cooling channel (1132), the liquid guiding pipe (1133) and the first liquid cooling channel (1131) in sequence.

6. The charging gun (100) according to claim 1 or 2, characterized in that, It further includes a first return channel (101), one end of the first return channel (101) is communicated with the first liquid cooling channel (1131), and the other end of the first return channel (101) is used to communicate with the cold quantity distribution unit (230), and the cooling working medium in the first liquid cooling channel (1131) is refluxed to the cold quantity distribution unit (230) through the first return channel (101); and / or, It further includes a second return channel (102), one end of the second return channel (102) is communicated with the second liquid cooling channel (1132), and the other end of the second return channel (102) is used to communicate with the cold quantity distribution unit (230), and the cooling working medium in the second liquid cooling channel (1132) is refluxed to the cold quantity distribution unit (230) through the second return channel (102).

7. The charging gun (100) according to any one of claims 1 to 6, characterized in that, The first cable (111) includes a first outer sheath (1112) sleeved outside the first core (1111). A first liquid cooling channel (1131) is formed between the first outer sheath (1112) and the first core (1111) to accommodate the cooling working medium, and the cooling working medium submerges the first core (1111).

8. The charging gun (100) according to any one of claims 1 to 7, characterized in that, The second cable (112) includes an insulating sleeve (1122). A second liquid cooling channel (1132) is formed inside the insulating sleeve (1122), and the second 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).

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

10. A charging device (10), characterized in that, Comprising: The charging gun (100) according to any one of claims 1 to 9; A cooling capacity distribution unit (230). The ends of the first cable (111) and the second cable (112) far from the gun head (120) are connected to the cooling capacity distribution unit (230), and the cooling capacity distribution unit (230) is used to provide the cooling working medium for the charging gun (100).

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