Charging gun and charging device

Abstract

The embodiment of the application provides a charging gun and a charging device, and relates to the technical field of charging devices. The charging gun comprises a power terminal, a sleeve and a power line. The power terminal has a liquid cooling cavity. The power terminal comprises a first connecting part and a second connecting part. The first connecting part and the second connecting part have a first through-flow hole. The first connecting part also has a second through-flow hole. The first through-flow hole penetrates through the second connecting part and communicates with the liquid cooling cavity. The second through-flow hole penetrates through the first connecting part and communicates with the liquid cooling cavity. The sleeve is connected with the first connecting part. The second connecting part is sleeved in the sleeve. A through-flow area is formed between the outer wall of the power terminal and the inner wall of the sleeve. The first through-flow hole and the second through-flow hole both communicate with the through-flow area. The power line is connected with the second connecting part in the through-flow area. In this way, the liquid cooling heat dissipation of the power terminal of the charging gun can be efficiently realized.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of charging equipment, in particular to a charging gun and a charging equipment. BACKGROUND

[0002] The charging gun is a connecting device for transmitting electric energy from a charging pile to an electric vehicle. After the charging gun is plugged into the electric vehicle, the charging pile can charge the electric vehicle through the charging gun. With the rapid development of the electric vehicle industry, the battery capacity of the electric vehicle is becoming larger and larger. Increasing the charging power to shorten the charging time is a method to achieve fast charging. Increasing the charging power will increase the heat consumption of the charging gun, and the high temperature of the charging gun will affect the reliability and other performances of the charging gun. Therefore, the heat dissipation efficiency of the charging gun restricts the increase of the charging power.

[0003] Liquid cooling of the charging gun is a direction to improve the heat dissipation efficiency of the charging gun. How to achieve liquid cooling of the charging gun has become a problem to be solved in the technical field of charging equipment. SUMMARY

[0004] Embodiments of the present application provide a charging gun and a charging equipment, which facilitate liquid cooling and heat dissipation of the power terminal of the charging gun.

[0005] The first aspect of the embodiments of the present application provides a charging gun, which comprises a power terminal, a sleeve and a power line. The power terminal has a liquid cooling cavity. The power terminal comprises a first connecting part and a second connecting part. One end of the first connecting part is connected to one end of the second connecting part. The liquid cooling cavity is located at the end of the first connecting part away from the second connecting part. The first connecting part and the second connecting part have a first through-flow hole. The first connecting part also has a second through-flow hole. The first through-flow hole penetrates the second connecting part and communicates with the liquid cooling cavity. The second through-flow hole penetrates the first connecting part and communicates with the liquid cooling cavity. The sleeve comprises a first end and a second end. The first end is connected to the first connecting part. The second connecting part is sleeved in the sleeve. An outer wall of the power terminal and an inner wall of the sleeve form a through-flow area. The first through-flow hole and the second through-flow hole both communicate with the through-flow area. The liquid cooling cavity communicates with the through-flow area through the first through-flow hole. The liquid cooling cavity also communicates with the through-flow area through the second through-flow hole. The power line is connected to the second connecting part in the through-flow area.

[0006] The charging gun provided by the embodiments of the present application can realize the communication between the liquid cooling cavity in the power terminal and the liquid cooling flow channel of the cable through the first through-flow hole, the second through-flow hole and the through-flow area formed in the sleeve. The communication between the liquid cooling cavity and the liquid cooling flow channel of the cable is relatively convenient, which facilitates the liquid cooling and heat dissipation of the power terminal.

[0007] The liquid cooling cavity and the flow-through area are communicated at two different positions by setting the first flow-through hole and the second flow-through hole, which facilitates the confluence or separation between the liquid cooling cavity and the flow-through area, and the cooling medium has good flowability at the position where the flow-through area is communicated with the first flow-through hole and the position where the flow-through area is communicated with the second flow-through hole, and the cooling medium has good overall flowability in the flow-through area, which is conducive to the smooth flow of the cooling medium between the liquid cooling cavity and different positions of the end of the flow-through area away from the liquid cooling cavity, and the smooth flow of the cooling medium is conducive to improving the heat dissipation efficiency of the charging gun.

[0008] The first flow-through hole is arranged at the first connecting part and the second connecting part and penetrates the second connecting part, so that the cooling medium has fewer corners when flowing between the first flow-through hole and the end of the flow-through area away from the liquid cooling cavity, and the cooling medium flows more smoothly between the first flow-through hole and the end of the flow-through area away from the liquid cooling cavity. In addition, the sleeve is less likely to block the first flow-through hole, which is conducive to the smooth flow of the cooling medium between the first flow-through hole and the flow-through area.

[0009] The power line is connected to the second connecting part in the flow-through area, and the connection between the power line and the power terminal is located in the flow-through area, so that the cooling medium in the flow-through area can efficiently liquid-cool the connection between the power line and the power terminal.

[0010] For example, the first connecting part and the second connecting part are an integral structure, that is, the first connecting part and the second connecting part are different parts of one structural member.

[0011] In some implementations, a first flow channel is formed in the first flow-through hole, and a second flow channel is formed in the second flow-through hole, the first flow channel and the second flow channel are connected in parallel, and the first flow channel and the second flow channel are respectively communicated with different positions of the flow-through area.

[0012] For example, the liquid cooling cavity, the first flow-through hole, the second flow-through hole, and the flow-through area are used for the flow of the cooling medium, the first flow-through hole is used for the flow of part of the cooling medium between the liquid cooling cavity and one position of the flow-through area, and the second flow-through hole is used for the flow of another part of the cooling medium between the liquid cooling cavity and another position of the flow-through area.

[0013] Exemplarily, the two ends of the first through hole are arranged in a spaced manner in the arrangement direction of the first connecting portion and the second connecting portion, and the two ends of the second through hole are arranged in a spaced manner in the arrangement direction of the first connecting portion and the second connecting portion, so that the cooling medium has fewer corners when flowing between the first through hole and the second through hole and the through-flow region away from one end of the liquid cooling cavity, and the cooling medium flows more smoothly between the first through hole and the second through hole and the through-flow region away from one end of the liquid cooling cavity. In addition, the first through hole and the second through hole are also easier to open. In addition, the sleeve is less likely to block the first through hole and the second through hole, facilitating the smooth flow of the cooling medium between the first through hole and the through-flow region and between the second through hole and the through-flow region. Furthermore, a larger space does not need to be left between the inner wall of the sleeve in the radial direction and the outer wall of the power terminal, and the part of the power terminal located in the sleeve can have a larger radial dimension, which can reduce the manufacturing difficulty of the power terminal.

[0014] Exemplarily, the first through hole and the second through hole both extend along the arrangement direction of the first connecting portion and the second connecting portion.

[0015] Exemplarily, the first through hole and the second through hole are two through holes with non-coinciding axes, that is, the axis of the first through hole does not coincide with the axis of the second through hole.

[0016] Exemplarily, at least part of the projection of the first through hole is located outside the projection of the second through hole along the arrangement direction of the first connecting portion and the second connecting portion. That is, at least part of the orthographic projection of the first through hole on the end face of the second connecting portion connected to the first connecting portion is located outside the second through hole.

[0017] Exemplarily, the first through hole and the second through hole partially coincide. Part of the projection of the first through hole coincides with part of the projection of the second through hole along the arrangement direction of the first connecting portion and the second connecting portion, and the first through hole communicates with the liquid cooling cavity through the second through hole, so as to arrange the first through hole and the second through hole in a smaller space.

[0018] Exemplarily, the power terminal further comprises a plug-in portion, the first connecting portion is located between the plug-in portion and the second connecting portion, the plug-in portion, the first connecting portion and the second connecting portion are arranged along the length direction of the power terminal, the two ends of the first through hole are arranged in a spaced manner in the length direction of the power terminal, and the two ends of the second through hole are arranged in a spaced manner in the length direction of the power terminal, so that the cooling medium has fewer corners when flowing between the liquid cooling cavity and the through-flow region, and flows more smoothly.

[0019] Exemplarily, the first through hole and the second through hole both extend along the length direction of the power terminal.

[0020] In some possible embodiments, the end surface of the first connecting portion connecting the one end of the second connecting portion comprises a first part and a second part. The second connecting portion is connected to the first part, and the second part forms a receiving space with the outer circumferential surface of the second connecting portion. At least part of the second through-flow hole away from the one end of the liquid cooling cavity is located in the second part, and the one end of the second through-flow hole away from the liquid cooling cavity is in communication with the receiving space. The power line is connected to the second connecting portion in the receiving space. In this way, the receiving space can provide space for the connection of the power line and the power terminal, so that the connection of the power line and the power terminal in the sleeve is more convenient. In addition, the second through-flow hole is in communication with the receiving space, so that the flow of the cooling medium at the connection of the power line and the power terminal is better, and efficient heat dissipation at the connection of the power line and the power terminal is facilitated. In addition, the first through-flow hole and the second through-flow hole can be in communication with the parts of the through-flow area located on both sides of the power line respectively, so as to facilitate the flow of the cooling medium in the parts of the through-flow area located on both sides of the power line.

[0021] For example, the first part and the second part are different parts of the end surface of the first connecting portion connecting the one end of the second connecting portion, that is, the first part and the second part both belong to the end surface of the first connecting portion connecting the one end of the second connecting portion.

[0022] For example, the through-flow area comprises the receiving space and a communication space. The communication space is located on the side of the second connecting portion away from the first connecting portion. The first through-flow hole is in communication with the communication space, and the second through-flow hole is in communication with the communication space through the receiving space.

[0023] For example, the first flow channel is in communication with the communication space, the second flow channel is in communication with the receiving space, the whole formed by the second flow channel and the receiving space in series is in parallel with the first flow channel, and the second flow channel is in communication with the communication space through the receiving space.

[0024] For example, the first through-flow hole is used for the flow of part of the cooling medium between the liquid cooling cavity and the communication space, and the second through-flow hole and the receiving space are used for the flow of another part of the cooling medium between the liquid cooling cavity and the communication space.

[0025] In some possible embodiments, the outer circumferential surface of the second connecting portion comprises a third part, and the third part is a plane. The second part and the third part form the receiving space, and the power line is connected to the third part. In this way, the connection of the power line and the second connecting portion is more convenient. In addition, the structure of the second connecting portion is simple, and the forming is more convenient.

[0026] In some possible implementation manners, the charging gun further includes a first liquid pipe. The first liquid pipe is sleeved outside the power line, the first liquid pipe is connected with the second end, and the first liquid pipe has a liquid cooling flow channel therein, which is communicated with the through-flow area through the second end. In this way, the connection of the sleeve pipe with the liquid supply assembly of the charging pile and the communication between the through-flow area and the liquid supply assembly are facilitated, so that the liquid cooling heat dissipation of the power terminal is efficiently realized. In addition, the power terminal is connected with the first liquid pipe through the sleeve pipe, and the liquid cooling cavity is conveniently communicated with the liquid cooling flow channel in the first liquid pipe.

[0027] In some possible implementation manners, the second end includes a third connecting portion and a first joint, and the third connecting portion is located between the first joint and the first end. The first liquid pipe is sleeved outside the first joint, and the liquid cooling flow channel is communicated with the through-flow area through the first joint. The charging gun further includes a first compression sleeve, which is sleeved outside the first liquid pipe and the third connecting portion, is fixedly connected with the third connecting portion, and compresses the first liquid pipe on the first joint. In this way, the sealed connection of the first liquid pipe with the sleeve pipe is facilitated.

[0028] In some possible implementation manners, the first connecting portion includes a positioning sub-portion and a connecting sub-portion. The positioning sub-portion is located between the connecting sub-portion and the second connecting portion. The first end is sleeved outside the positioning sub-portion, the outer peripheral surface of the positioning sub-portion is used for abutting against the inner wall of the first end, and the first end is fixedly and sealingly connected with the connecting sub-portion. In this way, the assembly of the sleeve pipe with the power terminal is facilitated through the positioning of the positioning sub-portion. In addition, the sleeve pipe is not prone to displacement relative to the power terminal through the limiting of the positioning sub-portion, and the stability of the sleeve pipe after being connected with the power terminal is good.

[0029] In some possible implementation manners, the charging gun further includes a second compression sleeve and a sealing member. The sealing member is arranged between the first end and the connecting sub-portion, the second compression sleeve is sleeved outside the sleeve pipe and the connecting sub-portion, is fixedly connected with the connecting sub-portion, and is compressed on the sleeve pipe and makes the first end and the connecting sub-portion compress the sealing member. In this way, the sealed connection of the sleeve pipe with the power terminal is facilitated.

[0030] In some possible implementation manners, the power terminal comprises a pin, an adapter and a flow guide pipe, and the pin is fixedly connected with the adapter. The adapter comprises a first connecting portion and a second connecting portion, and the pin is located on a side of the first connecting portion away from the second connecting portion. The liquid cooling cavity comprises a first sub-cavity located at the pin and a second sub-cavity located at the adapter, and the first sub-cavity and the second sub-cavity are in communication. The second sub-cavity is provided with a limiting opening on a cavity wall away from the first sub-cavity, and the first flow hole and the second flow hole are both located at an end of the limiting opening away from the second sub-cavity. One end of the flow guide pipe is arranged in the limiting opening and in communication with the first flow hole and the second flow hole, and the other end of the flow guide pipe is located in the first sub-cavity and in communication with the first sub-cavity. In this way, the cooling medium can be guided into the pin through the flow guide pipe, the flowability of the cooling medium in the pin is good, which is beneficial to the sufficient heat exchange between the pin with high temperature and the cooling medium, and the heat dissipation effect of the pin is good. In addition, the liquid cooling cavity is formed by the split pin and the adapter, and one end of the flow guide pipe is arranged in the limiting opening, so that the flow guide pipe is arranged conveniently.

[0031] In some possible implementation manners, the adapter further comprises a fourth connecting portion, the first connecting portion is located between the fourth connecting portion and the second connecting portion, the pin is located on a side of the fourth connecting portion away from the first connecting portion, the fourth connecting portion is provided with a flow hole in communication with the second sub-cavity, and the flow hole is used to communicate with the second liquid pipe. In this way, the second liquid pipe is conveniently communicated with the liquid cooling cavity outside the sleeve, and the sleeve has little influence on the connection of the second liquid pipe and the power terminal.

[0032] In some possible implementation manners, the charging gun further comprises a temperature sensor, and the outer surface of the sleeve is provided with a plurality of positioning grooves arranged at intervals along the circumference of the sleeve, and the temperature sensor is arranged in one of the positioning grooves. In this way, the temperature sensor arranged on the outer wall of the sleeve is convenient for detecting the temperature of the power terminal, and the wiring of the temperature sensor is also convenient. In addition, by arranging a plurality of positioning grooves at intervals along the circumference of the sleeve on the outer surface of the sleeve, the temperature sensor can be arranged at a predetermined relative position with the power terminal when the sleeve is rotated to different positions.

[0033] For example, the positioning grooves on the outer surface of the sleeve are uniformly distributed along the circumference of the sleeve.

[0034] The second aspect of the embodiments of the present application provides a charging device, which comprises a charging pile and the charging gun of any one of the above-mentioned embodiments. The charging gun further comprises a second liquid pipe in communication with the liquid cooling cavity of the charging gun. The charging pile comprises a power supply assembly and a liquid supply assembly, the power terminal of the charging gun is electrically connected with the power supply assembly through the power line of the charging gun, one of the inlet of the liquid supply assembly and the outlet of the liquid supply assembly is in communication with the second liquid pipe, and the other of the inlet of the liquid supply assembly and the outlet of the liquid supply assembly is in communication with the flow area of the charging gun. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A schematic view of a charging device according to an embodiment of the application;

[0036] Figure 2 A schematic view of a charging gun according to an embodiment of the application;

[0037] Figure 3 A schematic view of a charging gun according to an embodiment of the application; Figure 2 A schematic view of a charging gun according to an embodiment of the application;

[0038] Figure 4 A schematic view of a charging gun according to an embodiment of the application; Figure 2 A schematic view of a charging gun according to an embodiment of the application;

[0039] Figure 5 A schematic view of a power terminal according to an embodiment of the application;

[0040] Figure 6 A schematic view of a power terminal according to an embodiment of the application; Figure 5 A schematic view of a power terminal according to an embodiment of the application;

[0041] Figure 7 A schematic view of a power terminal according to an embodiment of the application; Figure 2 A schematic view of a power terminal according to an embodiment of the application;

[0042] Figure 8 A schematic view of a plug according to an embodiment of the application;

[0043] Figure 9 A schematic view of a plug according to an embodiment of the application; Figure 8 A schematic view of a plug according to an embodiment of the application;

[0044] Figure 10 A schematic view of an adapter according to an embodiment of the application;

[0045] Figure 11 A schematic view of an adapter according to an embodiment of the application; Figure 10 A schematic view of an adapter according to an embodiment of the application;

[0046] Figure 12 A schematic view of a power terminal according to an embodiment of the application; Figure 5 A schematic view of a power terminal according to an embodiment of the application;

[0047] Figure 13 A schematic view of a first compression sleeve according to an embodiment of the application;

[0048] Figure 14 A schematic view of a sleeve according to an embodiment of the application;

[0049] Figure 15 A schematic view of a sleeve according to an embodiment of the application; Figure 14 A schematic view of a sleeve according to an embodiment of the application;

[0050] Figure 16 A schematic view of a second compression sleeve provided in an embodiment of the present application;

[0051] Figure 17 A schematic view of a power terminal of a charging gun provided in an embodiment of the present application; Figure 2 A schematic view of a power terminal of a charging gun provided in an embodiment of the present application;

[0052] Figure 18 A schematic view of a power terminal of a charging gun provided in an embodiment of the present application; Figure 2 A schematic view of a power terminal of a charging gun provided in an embodiment of the present application.

[0053] BRIEF DESCRIPTION OF DRAWINGS

[0054] 100, charging gun; 110, gun head; 120, cable; 200, charging pile; 210, power supply assembly; 220, liquid supply assembly;

[0055] 1000, power terminal; 1100, pin; 1110, insertion part; 1200, adapter; 1210, first connecting part; 1211, positioning sub-part; 1211a, first part; 1211b, second part; 1212, connecting sub-part; 1220, second connecting part; 1221, third part; 1222, fourth part; 1230, fourth connecting part; 1231, first interface; 1240, second interface; 1300, second joint; 1400, flow guide pipe;

[0056] 2000, second liquid pipe;

[0057] 3000, sleeve; 3100, first end; 3110, sealing groove; 3120, first locking part; 3200, second end; 3210, third connecting part; 3220, first joint; 3221, first inclined surface structure;

[0058] 4000, power cable; 4100, first liquid pipe; 4200, power line;

[0059] 5100, liquid cooling cavity; 5110, first sub-cavity; 5120, second sub-cavity; 5200, through-flow opening; 5300, positioning groove; 5400, through-flow area; 5410, accommodation space; 5420, communication space; 5500, communication structure; 5510, first through-flow hole; 5520, second through-flow hole; 5600, liquid cooling flow channel; 5700, limiting opening; 5800, liquid passing opening;

[0060] 6100, first compression sleeve; 6110, second inclined surface structure; 6200, second compression sleeve; 6210, second locking part; 6300, sealing member;

[0061] 7000, temperature sensor. DETAILED DESCRIPTION

[0062] The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0063] Figure 1 A schematic diagram of a charging device provided by an embodiment of the present application.

[0064] As Figure 1 shown, the present application provides a charging device, which can be used to charge an electric vehicle. The charging device includes a charging pile 200 and a charging gun 100, and the charging pile 200 is connected to the charging gun 100. The charging pile 200 can provide electric energy, and the charging gun 100 is a connecting device for transmitting electric energy from the charging pile 200 to the electric vehicle. After the charging gun 100 is plugged into the electric vehicle, the charging pile 200 can charge the electric vehicle through the charging gun 100. In some examples, the charging device can be a super-charging device, and the charging power of a single charging gun 100 can be greater than or equal to 480KW, for example, the charging power of a single charging gun 100 can be 800KW (e.g., 1000A, 800V).

[0065] The charging gun 100 includes a gun head 110 and a cable 120, and the two ends of the cable 120 are respectively connected to the gun head 110 and the charging pile 200.

[0066] The charging pile 200 includes a power supply assembly 210, which is electrically connected to the gun head 110 through the cable 120. The power supply assembly 210 can be electrically connected to a commercial power supply through a charging host, which can convert the current provided by the commercial power supply into the current required for charging the electric vehicle. The power supply assembly 210 can deliver the current required for charging the electric vehicle to the gun head 110.

[0067] The charging pile 200 further includes a liquid supply assembly 220, which is in communication with the gun head 110 through the cable 120. The liquid supply assembly 220, the cable 120, and the gun head 110 form a cooling medium circulation loop. The liquid supply assembly 220 can provide cooling medium to the cable 120 and the gun head 110. The cooling medium can flow back to the liquid supply assembly 220 after absorbing heat in the charging gun 100, so as to achieve liquid cooling and heat dissipation of the charging gun 100.

[0068] Figure 2 A schematic diagram of a power terminal of a charging gun provided by an embodiment of the present application.

[0069] The gun head 110 comprises a power terminal 1000, and the power supply assembly 210 is electrically connected to the power terminal 1000 through the cable 120. The power supply assembly 210 can supply the electric current required by the electric vehicle charging to the power terminal 1000. When the gun head 110 is plugged into the electric vehicle, the power terminal 1000 is in electrical contact with the corresponding terminal on the electric vehicle.

[0070] The gun head 110 comprises a plurality of power terminals 1000, one or more of which are positive power terminals, and one or more of which are negative power terminals. The positive power terminals are electrically connected to the positive pole of the power supply assembly 210 through the cable 120, and the negative power terminals are electrically connected to the negative pole of the power supply assembly 210 through the cable 120. For example, the gun head 110 can comprise two power terminals 1000, one of which is a positive power terminal and the other of which is a negative power terminal.

[0071] The cable 120 comprises a power cable 4000, one end of which is electrically connected to the power supply assembly 210, and the other end of which is electrically connected to the power terminal 1000, so that the power supply assembly 210 is electrically connected to the power terminal 1000 through the power cable 4000. For example, the cable 120 comprises a plurality of power cables 4000 corresponding to the power terminals 1000, and the power cables 4000 are connected to the corresponding power terminals 1000, so that the power terminals 1000 are electrically connected to the power supply assembly 210 through the corresponding power cables 4000. For example, the positive power terminal is electrically connected to the positive pole of the power supply assembly 210 through the corresponding power cable 4000, and the negative power terminal is electrically connected to the negative pole of the power supply assembly 210 through the corresponding high-power cable 4000.

[0072] Figure 3 For Figure 2 A cross-sectional view of the power terminal of the charging gun provided in the present application. Figure 3 The cross section in the present application is the axis of the second connector 1300 at the power terminal 1000 of the charging gun 100, and the cross section in which the axis of the power terminal 1000 is located. Figure 3 The dotted arrow in the present application points to the direction of the flow of the cooling medium when the second liquid pipe 2000 is in communication with the outlet of the liquid supply assembly 220 and the liquid cooling flow channel 5600 is in communication with the inlet of the liquid supply assembly 220.

[0073] As Figure 2 , Figure 3As shown, the cable 120 further includes a second liquid pipe 2000, and the power terminal 1000 has a liquid cooling cavity 5100 therein. The power cable 4000 has a liquid cooling flow channel 5600 therein, the second liquid pipe 2000 is in communication with the liquid cooling cavity 5100, the liquid cooling flow channel 5600 is in communication with the liquid cooling cavity 5100, one of the inlet of the liquid supply assembly 220 and the outlet of the liquid supply assembly 220 is in communication with the second liquid pipe 2000, and the other of the inlet of the liquid supply assembly 220 and the outlet of the liquid supply assembly 220 is in communication with the liquid cooling flow channel 5600. The second liquid pipe 2000, the liquid cooling cavity 5100 and the liquid cooling flow channel 5600 are used to form a cooling medium circulation loop, and the cooling medium provided by the liquid supply assembly 220 can be used to liquid cool and dissipate heat of the power terminal 1000 and the power cable 4000. At this time, the cooling medium in the liquid cooling cavity 5100 can have a shorter heat exchange path and a larger heat exchange surface with the power terminal 1000, and the cooling efficiency of the cooling medium on the power terminal 1000 is higher.

[0074] For example, the cooling medium can be cooling oil or other insulating medium.

[0075] As shown, Figure 3 In some examples, the second liquid pipe 2000 is in communication with the outlet of the liquid supply assembly 220, and the liquid cooling flow channel 5600 is in communication with the inlet of the liquid supply assembly 220. At this time, the cooling medium provided by the liquid supply assembly 220 can first flow into the liquid cooling cavity 5100 through the second liquid pipe 2000, and then flow into the liquid cooling flow channel 5600 to dissipate heat of the power cable 4000 after dissipating heat of the power terminal 1000 in the liquid cooling cavity 5100, and then flow back to the liquid supply assembly 220 through the liquid cooling flow channel 5600. At this time, the cooling medium provided by the liquid supply assembly 220 can first dissipate heat of the power terminal 1000 with large heat generation and high temperature, and the cooling effect of the cooling medium on the power terminal 1000 is better, which is beneficial to improve the charging power of the charging gun 100.

[0076] In other examples, the second liquid pipe 2000 is in communication with the inlet of the liquid supply assembly 220, and the liquid cooling flow channel 5600 is in communication with the outlet of the liquid supply assembly 220. At this time, the cooling medium provided by the liquid supply assembly 220 can first flow into the liquid cooling flow channel 5600 to dissipate heat of the power cable 4000, and then flow into the liquid cooling cavity 5100 to dissipate heat of the power terminal 1000 after dissipating heat of the power cable 4000, and then flow back to the liquid supply assembly 220 through the second liquid pipe 2000. At this time, the cooling medium provided by the liquid supply assembly 220 can first dissipate heat of the power cable 4000 with small heat generation and low temperature, and then dissipate heat of the power terminal 1000 with large heat generation and high temperature, and the utilization efficiency of the cooling medium is higher.

[0077] As shown, Figure 2As shown, in some examples, the cable 120 includes multiple second liquid tubes 2000 corresponding one-to-one with the power terminals 1000. Each second liquid tube 2000 is connected to the corresponding power terminal 1000 and is connected to the liquid cooling chamber 5100 of the corresponding power terminal 1000. That is, different power terminals 1000 are connected to different second liquid tubes 2000, and the liquid cooling chambers 5100 of different power terminals 1000 are fed or discharged through different second liquid tubes 2000.

[0078] In other examples, multiple power terminals 1000 are connected to the same second liquid pipe 2000, and the liquid cooling chambers 5100 of the multiple power terminals 1000 are connected to the same second liquid pipe 2000. That is, the liquid cooling chambers 5100 of multiple different power terminals 1000 can enter or exit liquid through the same second liquid pipe 2000. In this case, multiple power terminals 1000 can be connected to the same second liquid pipe 2000 through a connector with multiple ports. For example, a second liquid pipe 2000 can be connected to two power terminals 1000 through a tee connector.

[0079] like Figure 3 As shown, for example, the power terminal 1000 has a flow port 5200 communicating with the liquid cooling cavity 5100, and the second liquid pipe 2000 is connected to the liquid cooling cavity 5100 through the flow port 5200.

[0080] For example, the power cable 4000 includes a power line 4200 and a first liquid tube 4100. The first liquid tube 4100 is sleeved outside the power line 4200 and has a liquid cooling channel 5600 inside. One end of the first liquid tube 4100 is connected to the liquid supply assembly 220, and the other end is connected to the power terminal 1000, so that the two ends of the liquid cooling channel 5600 are respectively connected to the liquid cooling cavity 5100 and the liquid supply assembly 220. One end of the power line 4200 is electrically connected to the power supply assembly 210, and the other end is electrically connected to the power terminal 1000, so that the power terminal 1000 is electrically connected to the power supply assembly 210 through the power line 4200. The cooling medium in the liquid cooling channel 5600 can dissipate heat from the power line 4200. The cooling medium in the liquid cooling cavity 5100 and the power line 4200 can have a short heat exchange path and a large heat exchange surface, resulting in high heat dissipation efficiency of the cooling medium for the power line 4200.

[0081] In some examples, there is a liquid cooling channel 5600 between the power line 4200 and the first liquid pipe 4100. That is, there is a liquid cooling channel 5600 on the outside of the power line 4200. In this case, the cooling medium in the liquid cooling channel 5600 can exchange heat with the power line 4200 on the outside of the power line 4200 to achieve heat dissipation of the power line 4200.

[0082] Exemplarily, the power line 4200 and the first liquid pipe 4100 can have one or more liquid cooling flow channels 5600.

[0083] Exemplarily, the power line 4200 and the inner wall of the first liquid pipe 4100 have a spacing to form the liquid cooling flow channel 5600 between the power line 4200 and the first liquid pipe 4100.

[0084] Exemplarily, the inner wall of the first liquid pipe 4100 can have a ridge structure or a groove structure to form the liquid cooling flow channel 5600 between the power line 4200 and the first liquid pipe 4100.

[0085] Exemplarily, the outer circumferential surface of the power line 4200 can have a ridge structure or a groove structure to form the liquid cooling flow channel 5600 between the power line 4200 and the first liquid pipe 4100.

[0086] In some examples, the power line 4200 has the liquid cooling flow channel 5600 (not shown) therein, and the cooling medium in the liquid cooling flow channel 5600 can exchange heat with the power line 4200 on the inner side of the power line 4200 to dissipate heat of the power line 4200.

[0087] Exemplarily, the power cable 4000 further comprises a support, and the power line 4200 is sleeved on the outer surface of the support to form the liquid cooling flow channel 5600 in the power line 4200. For example, the support can be a hollow pipe.

[0088] Exemplarily, the power line 4200 and the first liquid pipe 4100 have the liquid cooling flow channel 5600, and the power line 4200 also has the liquid cooling flow channel 5600, so that the heat exchange area between the cooling medium and the power line 4200 is large, and the cooling effect of the cooling medium on the power line 4200 is good.

[0089] As shown in Figure 3 Exemplarily, the power terminal 1000 comprises a second connector 1300, the second connector 1300 is arranged at the through-flow opening 5200 and communicates with the liquid cooling cavity 5100 through the through-flow opening 5200, the second liquid pipe 2000 is connected with the second connector 1300, and the second liquid pipe 2000 communicates with the second connector 1300, so that the second liquid pipe 2000 communicates with the liquid cooling cavity 5100 through the second connector 1300 and the through-flow opening 5200.

[0090] Exemplarily, the second connector 1300 can be a lotus connector to facilitate quick disassembly and assembly of the second liquid pipe 2000 and the power terminal 1000.

[0091] As shown in Figure 3As shown, the power terminal 1000 includes a plug-in portion 1110, a first connecting portion 1210 and a second connecting portion 1220. The first connecting portion 1210 is located between the plug-in portion 1110 and the second connecting portion 1220, one end of the first connecting portion 1210 is connected to one end of the second connecting portion 1220, and the liquid cooling cavity 5100 is located at the end of the first connecting portion 1210 away from the second connecting portion 1220. When the gun head 110 is plugged on the electric vehicle, the plug-in portion 1110 is in electrical contact with the corresponding terminal on the electric vehicle.

[0092] Exemplarily, the first connecting portion 1210 and the second connecting portion 1220 are an integral structure. That is, the first connecting portion 1210 and the second connecting portion 1220 are different parts of one structural member.

[0093] The charging gun 100 further includes a sleeve 3000, the sleeve 3000 includes a first end 3100 and a second end 3200, the first end 3100 is connected to the first connecting portion 1210, the second connecting portion 1220 is sleeved in the sleeve 3000, and a through-flow area 5400 is formed between the outer wall of the power terminal 1000 and the inner wall of the sleeve 3000. The power terminal 1000 further has a communication structure 5500, which communicates the liquid cooling cavity 5100 and the through-flow area 5400. The power line 4200 is connected to the second connecting portion 1220 in the through-flow area 5400.

[0094] The first liquid pipe 4100 is connected to the second end 3200, and the liquid cooling flow channel 5600 communicates the through-flow area 5400 through the second end 3200. One of the inlet of the liquid supply assembly 220 and the outlet of the liquid supply assembly 220 communicates with the second liquid pipe 2000, and the other of the inlet of the liquid supply assembly 220 and the outlet of the liquid supply assembly 220 communicates with the through-flow area 5400 through the liquid cooling flow channel 5600. The liquid supply assembly 220, the liquid cooling flow channel 5600, the through-flow area 5400, the communication structure 5500, the liquid cooling cavity 5100 and the second liquid pipe 2000 are used to form a cooling medium circulation loop.

[0095] In this way, by connecting the power terminal 1000 to the first liquid pipe 4100 through the sleeve 3000, the liquid cooling cavity 5100 can be conveniently communicated with the liquid cooling flow channel 5600 in the first liquid pipe 4100, and liquid cooling heat dissipation of the power terminal 1000 can be conveniently achieved. In addition, the connection between the power line 4200 and the power terminal 1000 is located in the sleeve 3000, and the cooling medium in the sleeve 3000 can perform liquid cooling heat dissipation on the connection between the power line 4200 and the power terminal 1000.

[0096] Exemplarily, the plug-in portion 1110, the first connecting portion 1210 and the second connecting portion 1220 are arranged along the length direction of the power terminal 1000.

[0097] For example, the liquid cooling cavity 5100 is partially located in the plug-in part 1110, so as to facilitate liquid cooling of the plug-in part 1110.

[0098] For example, the through-flow opening 5200 is located between the plug-in part 1110 and the first connecting part 1210, and the through-flow opening 5200, the second connector 1300 and the second liquid pipe 2000 are located outside the sleeve 3000, so that the sleeve has less influence on the connection of the second liquid pipe 2000 and the power terminal 1000.

[0099] As shown in Figure 3 In some possible embodiments, the second end 3200 includes a third connecting part 3210 and a first connector 3220, and the third connecting part 3210 is located between the first connector 3220 and the first end 3100. The first liquid pipe 4100 is sleeved outside the first connector 3220, and the liquid cooling flow channel 5600 is in communication with the through-flow area 5400 through the first connector 3220. The charging gun 100 further includes a first compression sleeve 6100, which is sleeved outside the first liquid pipe 4100 and the third connecting part 3210, and is fixedly connected with the third connecting part 3210. The first compression sleeve 6100 is used to press the first liquid pipe 4100 on the first connector 3220, so that the first liquid pipe 4100 is in sealed connection with the first connector 3220.

[0100] In this way, the first liquid pipe 4100 is more easily in sealed connection with the sleeve 3000.

[0101] For example, the first compression sleeve 6100 is detachably connected with the third connecting part 3210.

[0102] In some examples, the first compression sleeve 6100 can be threadedly connected with the third connecting part 3210.

[0103] In other examples, the first compression sleeve 6100 can be clamped with the third connecting part 3210.

[0104] In some possible embodiments, the first connecting part 1210 includes a positioning sub-part 1211 and a connecting sub-part 1212. The positioning sub-part 1211 is located between the connecting sub-part 1212 and the second connecting part 1220. The first end 3100 is sleeved outside the positioning sub-part 1211, and the outer peripheral surface of the positioning sub-part 1211 is used to abut against the inner wall of the first end 3100, so as to realize the alignment and positioning of the first end 3100 and the power terminal 1000.

[0105] In this way, the positioning sub-part 1211 makes it easier to assemble the sleeve 3000 with the power terminal 1000. In addition, the positioning sub-part 1211 limits the sleeve 3000 from shifting relative to the power terminal 1000, thus improving the stability of the connection between the sleeve 3000 and the power terminal 1000.

[0106] The charging gun 100 also includes a second clamping sleeve 6200 and a sealing element 6300. The sealing element 6300 is disposed between the first end 3100 and the connecting part 1212. The second clamping sleeve 6200 is sleeved on the outside of the sleeve 3000 and the connecting part 1212. The second clamping sleeve 6200 is fixedly connected to the connecting part 1212. The second clamping sleeve 6200 is pressed onto the sleeve 3000 and causes the first end 3100 and the connecting part 1212 to press the sealing element 6300 tightly, so that the first end 3100 and the connecting part 1212 are sealed together.

[0107] In this way, it is relatively easy to achieve a sealed connection between the bushing 3000 and the power terminal 1000.

[0108] For example, both the positioning sub-part 1211 and the connecting sub-part 1212 are cylindrical structures. The positioning sub-part 1211, the connecting sub-part 1212 and the sleeve 3000 are coaxial. The outer diameter of the positioning sub-part 1211 is smaller than the outer diameter of the connecting sub-part 1212.

[0109] For example, the second clamping sleeve 6200 is detachably connected to the connecting part 1212.

[0110] In some examples, the second clamping sleeve 6200 can be threadedly connected to the connecting part 1212.

[0111] In other examples, the second clamping sleeve 6200 can be snapped into the connecting part 1212.

[0112] like Figure 3 As shown, in some possible embodiments, the connecting structure 5500 extends along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220.

[0113] In this way, the cooling medium has fewer corners to flow between the communication structure 5500 and the throughflow area 5400 away from the liquid cooling cavity 5100, so that the cooling medium flows more smoothly between the communication structure 5500 and the throughflow area 5400 away from the liquid cooling cavity 5100. The smooth flow of the cooling medium helps to improve the heat dissipation efficiency of the charging gun 100. In addition, the communication structure 5500 extending along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220 is easier to open. In addition, the sleeve 3000 is less likely to block the communication structure 5500, which helps the cooling medium to flow smoothly between the communication structure 5500 and the throughflow area 5400. Furthermore, a larger gap is not required between the inner wall of the sleeve 3000 in the radial direction and the outer wall of the power terminal 1000. The part of the power terminal 1000 located in the sleeve 3000 can have a larger radial dimension, which can reduce the manufacturing difficulty of the power terminal 1000.

[0114] When the plug-in portion 1110, the first connecting portion 1210 and the second connecting portion 1220 are arranged along the length direction of the power terminal 1000, the communication structure 5500 extends along the length direction of the power terminal 1000. At this time, the cooling medium has fewer corners to flow between the liquid cooling flow channel 5600 and the liquid cooling cavity 5100, so that the flow of the cooling medium is more smooth.

[0115] Figure 4 For Figure 2 Another cross-sectional view of the power terminal of the charging gun provided in the present application, Figure 5 A schematic view of a power terminal provided in an embodiment of the present application. Figure 4 The cross section in FIG. 11 is a cross section where the axis of the first throughflow hole 5510 and the axis of the second throughflow hole 5520 of one power terminal 1000 of the charging gun 100 are located. Figure 4 The direction indicated by the dotted arrow in FIG. 11 is the flow direction of the cooling medium when the second liquid pipe 2000 is in communication with the outlet of the liquid supply assembly 220 and the liquid cooling flow channel 5600 is in communication with the inlet of the liquid supply assembly 220.

[0116] As Figure 4As shown, the communication structure 5500 includes a first through-flow hole 5510 located at the first connecting portion 1210 and the second connecting portion 1220, and a second through-flow hole 5520 located at the first connecting portion 1210. That is, the first connecting portion 1210 and the second connecting portion 1220 have the first through-flow hole 5510, and the first connecting portion 1210 further has the second through-flow hole 5520, the first through-flow hole 5510 penetrates the second connecting portion 1220 and communicates with the liquid cooling cavity 5100, and the second through-flow hole 5520 penetrates the first connecting portion 1210 and communicates with the liquid cooling cavity 5100. Both the first through-flow hole 5510 and the second through-flow hole 5520 communicate with the through-flow area 5400, and the liquid cooling cavity 5100 communicates with the through-flow area 5400 through the first through-flow hole 5510, and the liquid cooling cavity 5100 further communicates with the through-flow area 5400 through the second through-flow hole 5520.

[0117] In this way, the communication between the liquid cooling cavity 5100 and the liquid cooling flow channel 5600 can be realized through the first through-flow hole 5510, the second through-flow hole 5520, and the through-flow area 5400, and the communication between the liquid cooling cavity 5100 and the liquid cooling flow channel 5600 can be facilitated, so as to facilitate the liquid cooling heat dissipation of the power terminal 1000. In addition, the liquid cooling cavity 5100 and the through-flow area 5400 are respectively communicated at two different positions through the first through-flow hole 5510 and the second through-flow hole 5520, so as to facilitate the confluence or separation between the liquid cooling cavity 5100 and the through-flow area 5400, and the cooling medium has good flowability at the position where the through-flow area 5400 communicates with the first through-flow hole 5510 and the position where the through-flow area 5400 communicates with the second through-flow hole 5520, the cooling medium has good overall flowability in the through-flow area 5400, and then the smooth flow of the cooling medium between the liquid cooling cavity 5100 and different positions of the through-flow area 5400 away from the liquid cooling cavity 5100 is facilitated, the smooth flow of the cooling medium facilitates to improve the heat dissipation efficiency of the charging gun 100. In addition, the first through-flow hole 5510 is arranged at the first connecting portion 1210 and the second connecting portion 1220 and penetrates the second connecting portion 1220, so as to reduce the corner of the cooling medium flowing between the first through-flow hole 5510 and the through-flow area 5400 away from the liquid cooling cavity 5100, and the cooling medium flows more smoothly between the first through-flow hole 5510 and the through-flow area 5400 away from the liquid cooling cavity 5100. In addition, the sleeve 3000 is less likely to block the first through-flow hole 5510, and the smooth flow of the cooling medium between the first through-flow hole 5510 and the through-flow area 5400 is facilitated.

[0118] For example, the first through-flow hole 5510 away from the liquid cooling cavity 5100 and the second through-flow hole 5520 away from the liquid cooling cavity 5100 communicate with the through-flow area 5400.

[0119] Exemplarily, a first flow channel is formed in the first through hole 5510, and a second flow channel is formed in the second through hole 5520, the first flow channel and the second flow channel are in parallel, and the first flow channel and the second flow channel respectively communicate with different positions of the through flow area 5400.

[0120] Exemplarily, the liquid cooling cavity 5100, the first through hole 5510, the second through hole 5520 and the through flow area 5400 are all used for the cooling medium to flow, the first through hole 5510 is used for a part of the cooling medium to flow between the liquid cooling cavity 5100 and one position of the through flow area 5400, and the second through hole 5520 is used for another part of the cooling medium to flow between the liquid cooling cavity 5100 and another position of the through flow area 5400.

[0121] In some examples, the two ends of the first through hole 5510 are arranged in a spaced manner in the arrangement direction of the first connecting part 1210 and the second connecting part 1220, and the two ends of the second through hole 5520 are arranged in a spaced manner in the arrangement direction of the first connecting part 1210 and the second connecting part 1220, so that the cooling medium has fewer corners when flowing between the first through hole 5510 and the second through hole 5520 and the end of the through flow area 5400 away from the liquid cooling cavity 5100, and the cooling medium can flow more smoothly between the first through hole 5510 and the second through hole 5520 and the end of the through flow area 5400 away from the liquid cooling cavity 5100. Furthermore, the first through hole 5510 and the second through hole 5520 are also easier to open.

[0122] Exemplarily, the first through hole 5510 and the second through hole 5520 both extend along the arrangement direction of the first connecting part 1210 and the second connecting part 1220.

[0123] When the plug-in part 1110, the first connecting part 1210 and the second connecting part 1220 are arranged along the length direction of the power terminal 1000, the first through hole 5510 and the second through hole 5520 both extend along the length direction of the power terminal 1000.

[0124] Exemplarily, the first through hole 5510 and the second through hole 5520 are two through holes with non-coinciding axes, that is, the axis of the first through hole 5510 does not coincide with the axis of the second through hole 5520.

[0125] Exemplarily, along the arrangement direction of the first connecting part 1210 and the second connecting part 1220, at least part of the projection of the first through hole 5510 is located outside the projection of the second through hole 5520. That is, at least part of the orthographic projection of the first through hole 5510 on the end face of the first connecting part 1210 connecting the end of the second connecting part 1220 is located outside the second through hole 5520.

[0126] Exemplarily, the first through-flow hole 5510 and the second through-flow hole 5520 are partially overlapped. Along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220, the projection of the first through-flow hole 5510 is partially overlapped with the projection of the second through-flow hole 5520, and the first through-flow hole 5510 can communicate with the liquid cooling cavity 5100 through the second through-flow hole 5520, so as to arrange the first through-flow hole 5510 and the second through-flow hole 5520 in a smaller space.

[0127] Exemplarily, along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220, the projection of the first through-flow hole 5510 is located within the projection of the second connecting portion 1220.

[0128] Exemplarily, the second through-flow hole 5520 is coaxially arranged with the first connecting portion 1210, so that the second through-flow hole 5520 is easier to open.

[0129] As shown in Figure 5 The first connecting portion 1210 connects the end face of one end of the second connecting portion 1220 and the outer peripheral surface of the second connecting portion 1220 to form a containing space 5410. Specifically, the first connecting portion 1210 connecting the end face of one end of the second connecting portion 1220 includes a first part 1211a and a second part 1211b. The first part 1211a and the second part 1211b are different parts of the end face of one end of the second connecting portion 1220 connected by the first connecting portion 1210, that is, the first part 1211a and the second part 1211b both belong to the end face of one end of the second connecting portion 1220 connected by the first connecting portion 1210. The second connecting portion 1220 is connected to the first part 1211a, the second part 1211b and the outer peripheral surface of the second connecting portion 1220 form the containing space 5410, at least part of the second through-flow hole 5520 away from the liquid cooling cavity 5100 is located in the second part 1211b, and the end of the second through-flow hole 5520 away from the liquid cooling cavity 5100 communicates with the containing space 5410.

[0130] The through-flow region 5400 includes the containing space 5410 and a communicating space 5420, the communicating space 5420 is located on the side of the second connecting portion 1220 away from the first connecting portion 1210, and the liquid cooling flow channel 5600 communicates with the communicating space 5420 through the second end 3200. The first through-flow hole 5510 communicates with the communicating space 5420, and the second through-flow hole 5520 communicates with the communicating space 5420 through the containing space 5410.

[0131] Exemplarily, the first flow channel communicates with the communicating space 5420, the second flow channel communicates with the containing space 5410, the second flow channel and the containing space 5410 are connected in series, the whole formed by the second flow channel and the containing space 5410 is connected in parallel with the first flow channel, and the second flow channel communicates with the communicating space 5420 through the containing space 5410.

[0132] For example, the first through hole 5510 is used for a portion of the cooling medium to flow between the liquid cooling cavity 5100 and the communication space 5420, and the second through hole 5520 and the accommodation space 5410 are used for another portion of the cooling medium to flow between the liquid cooling cavity 5100 and the communication space 5420.

[0133] As shown in Figure 3 , Figure 4 The power line 4200 is connected to the second connecting portion 1220 in the accommodation space 5410.

[0134] In this way, the accommodation space 5410 can provide a space for the power line 4200 to be connected to the power terminal 1000, so that the power line 4200 is more convenient to be connected to the power terminal 1000 in the sleeve 3000. In addition, the second through hole 5520 is in communication with the accommodation space 5410, so that the cooling medium has better flowability at the connection between the power line 4200 and the power terminal 1000, which is beneficial to efficient heat dissipation at the connection between the power line 4200 and the power terminal 1000. In addition, the first through hole 5510 and the second through hole 5520 can be in communication with the portions of the through-flow region 5400 located on both sides of the power line 4200, respectively, so as to facilitate the flow of the cooling medium in the portions of the through-flow region 5400 located on both sides of the power line 4200.

[0135] For example, the end surface of the positioning sub-portion 1211 connected to one end of the second connecting portion 1220 includes a first portion 1211a and a second portion 1211b. The accommodation space 5410 is formed between the end surface of the positioning sub-portion 1211 connected to one end of the second connecting portion 1220 and the outer circumferential surface of the second connecting portion 1220.

[0136] For example, the power line 4200 can be welded to the second connecting portion 1220 to realize the electrical connection between the power line 4200 and the power terminal 1000. For example, the power line 4200 can be connected to the second connecting portion 1220 by ultrasonic welding.

[0137] For example, along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220, at least a part of the projection of the second through hole 5520 is located outside the projection of the second connecting portion 1220.

[0138] For example, along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220, a part of the projection of the second through hole 5520 is located outside the projection of the second connecting portion 1220, and the part of the projection of the second through hole 5520 is covered by the projection of the second connecting portion 1220.

[0139] Figure 6 For Figure 5 the connection between the power terminal and the power line provided in the present application,Figure 7 Fig. 6 is a schematic view of another cross section of the power terminal of the charging gun provided in the first embodiment. Figure 2 Fig. 7 is a schematic view of another cross section of the power terminal of the charging gun provided in the first embodiment. Figure 7 The cross section in Fig. 7 is one cross section perpendicular to the axis of the sleeve 3000.

[0140] As shown in Fig. 6, the outer circumferential surface of the second connecting portion 1220 includes a third portion 1221 and a fourth portion 1222 connected head to tail along the circumferential direction of the second connecting portion 1220. Figure 6 、 Figure 7 The accommodation space 5410 is formed between the second portion 1211b and the third portion 1221, and the power line 4200 is connected to the third portion 1221.

[0141] In some possible embodiments, the third portion 1221 is a plane.

[0142] In this way, the connection between the power line 4200 and the second connecting portion 1220 is easier. In addition, the structure of the second connecting portion 1220 is simple, and the molding is more convenient.

[0143] For example, the third portion 1221 can be a plane parallel to the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220, or the third portion 1221 can be a plane inclined to the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220.

[0144] In other possible embodiments, the third portion 1221 can be a concave arc surface (not shown).

[0145] As shown in Fig. 6, in some possible embodiments, the fourth portion 1222 extends along the circumferential direction of the first connecting portion 1210. Figure 6 、 Figure 7 In this way, the size of the second connecting portion 1220 can be larger, which is beneficial to the first through-flow hole 5210 formed on the second connecting portion 1220.

[0146] For example, the fourth portion 1222 is in clearance fit with the sleeve 3000, so that the sleeve 3000 and the power terminal 1000 are easier to assemble.

[0147] For example, the fourth portion 1222 is a circular arc surface.

[0148] For example, the fourth portion 1222 is a circular arc surface.

[0149] For example, the projection of the second connecting portion 1220 along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220 is in the shape of an arc. For example, the projection of the second connecting portion 1220 along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220 can be in the shape of a semicircular arc.

[0150] Exemplarily, the second connecting portion 1220 can be a semi-cylindrical structure.

[0151] As shown in Figure 7 , exemplarily, the power terminal 1000 further includes a fourth connecting portion 1230, the fourth connecting portion 1230 is located between the plug-in portion 1110 and the first connecting portion 1210, the first connecting portion 1210 is located between the fourth connecting portion 1230 and the second connecting portion 1220, and the through-flow port 5200 is located at the fourth connecting portion 1230 (as shown in Figure 10 ), and the second connector 1300 is fixedly connected with the fourth connecting portion 1230.

[0152] In this way, the connection between the second liquid pipe 2000 and the power terminal 1000 is facilitated outside the sleeve 3000, and the connection between the second liquid pipe 2000 and the power terminal 1000 is facilitated.

[0153] Exemplarily, the fourth connecting portion 1230 is provided with a first interface 1231 (as shown in Figure 10 ) at the through-flow port 5200, and the second connector 1300 is plugged into the first interface 1231, and the second connector 1300 can be fixedly connected with the fourth connecting portion 1230 by welding.

[0154] Exemplarily, part of the liquid cooling cavity 5100 is located in the fourth connecting portion 1230, so as to facilitate the communication between the through-flow port 5200 and the liquid cooling cavity 5100.

[0155] Figure 8 A schematic view of a plug pin provided in an embodiment of the present application, Figure 9 is provided. Figure 8 A cross-sectional schematic view of the plug pin provided in Figure 9 . The cross-section in is a cross-section in which the axis of the plug pin 1100 is located.

[0156] Figure 8 , Figure 9 As shown in some possible implementations, the power terminal 1000 includes a plug pin 1100, the plug pin 1100 includes a plug-in portion 1110, and the liquid cooling cavity 5100 includes a first sub-cavity 5110 located in the plug pin 1100, and part of the first sub-cavity 5110 is located in the plug-in portion 1110.

[0157] Figure 10 A schematic view of an adapter from one perspective provided in an embodiment of the present application, Figure 11 is provided. Figure 10 A schematic view of the adapter from another perspective provided in Figure 12 is provided. Figure 5 An exploded schematic view of the power terminal provided in

[0158] As shown in Figures 10-12As shown, the power terminal 1000 further comprises a connector 1200, the connector 1200 comprises a first connecting part 1210, a second connecting part 1220 and a fourth connecting part 1230, that is, the first connecting part 1210, the second connecting part 1220 and the fourth connecting part 1230 are different parts of the connector 1200, and the second joint 1300 is fixedly connected with the connector 1200. The liquid cooling cavity 5100 further comprises a second sub-cavity 5120 located in the connector 1200, part of the second sub-cavity 5120 is located in the fourth connecting part 1230, and the through-flow port 5200 communicates with the second sub-cavity 5120. The pin 1100 is fixedly connected with the connector 1200, the pin 1100 is located on the side of the first connecting part 1210 away from the second connecting part 1220, the pin 1100 is located on the side of the fourth connecting part 1230 away from the first connecting part 1210, the first sub-cavity 5110 penetrates through the end of the pin 1100 towards the connector 1200, and the second sub-cavity 5120 penetrates through the end of the connector 1200 towards the pin 1100, and the first sub-cavity 5110 communicates with the second sub-cavity 5120.

[0159] For example, the connector 1200 can be provided with a second interface 1240, the pin 1100 is inserted into the second interface 1240, and the pin 1100 can be fixedly connected with the connector 1200 by welding.

[0160] As shown, Figure 12 The power terminal 1000 further comprises a flow guide pipe 1400. As shown, Figure 3 The second sub-cavity 5120 is provided with a limiting port 5700 on the cavity wall away from the first sub-cavity 5110, the communication structure 5500 is arranged on the connector 1200, the communication structure 5500 is located at the end of the limiting port 5700 away from the second sub-cavity 5120, and the communication structure 5500 communicates with the limiting port 5700. That is, the first through-flow hole 5510 and the second through-flow hole 5520 are arranged on the connector 1200, the first through-flow hole 5510 and the second through-flow hole 5520 are located at the end of the limiting port 5700 away from the second sub-cavity 5120, and the first through-flow hole 5510 and the second through-flow hole 5520 communicate with the limiting port 5700.

[0161] One end of the flow guide pipe 1400 is arranged in the limiting port 5700, and the limiting port 5700 is used to limit the movement of the flow guide pipe 1400. The end of the flow guide pipe 1400 located in the limiting port 5700 communicates with the communication structure 5500, that is, the end of the flow guide pipe 1400 located in the limiting port 5700 communicates with the first through-flow hole 5510 and the second through-flow hole 5520. The other end of the flow guide pipe 1400 is located in the first sub-cavity 5110 and communicates with the first sub-cavity 5110, so that the communication structure 5500 communicates with the first sub-cavity 5110 through the flow guide pipe 1400.

[0162] In this way, the cooling medium can be guided into the pin 1100 through the flow guide pipe 1400, the flow of the cooling medium in the pin 1100 is good, which is beneficial to the sufficient heat exchange between the pin 1100 with high temperature and the cooling medium, and the heat dissipation effect of the pin 1100 is good. In addition, the liquid cooling cavity 5100 is formed by the split pin 1100 and the adapter 1200, and the flow guide pipe 1400 is arranged in the limiting opening 5700, and the flow guide pipe 1400 is arranged conveniently.

[0163] For example, the flow guide pipe 1400 can be in interference fit with the adapter 1200 in the limiting opening 5700.

[0164] As shown in Figure 12 , the side wall of one end of the flow guide pipe 1400 located in the first sub-cavity 5110 has a liquid passing opening 5800, and the liquid passing opening 5800 communicates the first sub-cavity 5110 and the inner cavity of the flow guide pipe 1400, so that the inner cavity of the flow guide pipe 1400 and the first sub-cavity 5110 have a large flow area, which is beneficial to the smooth flow of the cooling medium between the inner cavity of the flow guide pipe 1400 and the first sub-cavity 5110.

[0165] Figure 13 A cross-sectional view of a first compression sleeve provided in an embodiment of the present application is shown in Figure 14 A schematic view of a sleeve provided in an embodiment of the present application is shown in Figure 15 A cross-sectional view of a sleeve provided in an embodiment of the present application is shown in Figure 14 . Figure 13 The cross section in the sleeve 3000 is the cross section in which the axis of the first compression sleeve 6100 is located. Figure 15 The cross section in the sleeve 3000 is the cross section in which the axis of the first compression sleeve 6100 is located.

[0166] As shown in Figures 13-15 , the outer wall of the first joint 3220 has a first inclined surface structure 3221, and the inner wall of the first compression sleeve 6100 has a second inclined surface structure 6110, and the second inclined surface structure 6110 compresses the pipe wall of the first liquid pipe 4100 on the first inclined surface structure 3221, and the first inclined surface structure 3221 and the second inclined surface structure 6110 can convert the axial force along the first joint 3220 into the radial force along the first joint 3220, so as to realize the sealed connection of the first liquid pipe 4100 and the first joint 3220.

[0167] As shown in Figure 14 , Figure 15 , the outer wall of the first end 3100 has a first clamping portion 3120 protruding outward.

[0168] Figure 16 A schematic view of a second compression sleeve provided in an embodiment of the present application is shown in

[0169] As shown in Figure 16As shown, the inner wall of the second compression sleeve 6200 has a second locking portion 6210 protruding inward.

[0170] Figure 17 For Figure 2 Another cross-sectional view of the power terminal of the charging gun provided in the present application. Figure 17 The cross-section in the present application is the axis of the second joint 1300 at one power terminal 1000 of the charging gun 100, and the cross-section where the axis of the power terminal 1000 is located

[0171] As Figure 17 As shown, the second locking portion 6210 is compressed on the first locking portion 3120, so that the end face of the first end 3100 and the connecting sub-portion 1212 connecting one end of the positioning sub-portion 1211 compresses the sealing member 6300 to achieve the sealed connection of the first end 3100 and the connecting sub-portion 1212.

[0172] Illustratively, the sealing member 6300 can be a sealing ring.

[0173] As Figure 15 As shown, the end face of the first end 3100 has a sealing groove 3110, and the sealing ring is arranged in the sealing groove 3110, so that the sealing ring has a larger sealing surface with the first end 3100, and in addition, the sealing groove 3110 can also play a role in positioning the sealing cavity, so that the sealing ring is not easy to displace.

[0174] Figure 18 For Figure 2 An exploded view of the power terminal of the charging gun provided in the present application.

[0175] As Figure 18 As shown, the charging gun 100 further comprises a temperature sensor 7000, which is arranged on the outer surface of the sleeve 3000 to detect the temperature of the power terminal 1000, and the wiring of the temperature sensor 7000 is more convenient.

[0176] Illustratively, the material of the sleeve 3000 is a heat-conducting material.

[0177] Illustratively, the temperature sensor 7000 can be fixedly connected with the sleeve 3000 through heat-conducting adhesive.

[0178] Illustratively, the sleeve 3000 and the temperature sensor 7000 are sleeved with a heat-shrinkable tube, and the temperature sensor 7000 can be press-fitted on the sleeve 3000 through the heat-shrinkable tube.

[0179] Illustratively, the outer surface of the sleeve 3000 has a positioning groove 5300, which is located between the first end 3100 and the second end 3200, and the temperature sensor 7000 is arranged in the positioning groove 5300.

[0180] For example, the outer surface of the sleeve 3000 has a plurality of positioning grooves 5300 arranged along the circumference of the sleeve 3000, and the temperature sensor 7000 is arranged in one of the positioning grooves 5300, so that when the sleeve 3000 rotates to different positions, the temperature sensor 7000 can be arranged at a predetermined relative position with the power terminal 1000.

[0181] For example, the positioning grooves 5300 on the outer surface of the sleeve 3000 are uniformly distributed along the circumference of the sleeve 3000. That is, the interval between any one positioning groove 5300 and the positioning grooves 5300 adjacent to it on both sides of the circumference of the sleeve 3000 is equal.

[0182] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0183] The terms "first", "second", "third", "fourth" and the like (if any) in the description of the embodiments of the present application and the claims and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0184] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part 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, The application relates to a power terminal (1000) with a liquid cooling cavity (5100), the power terminal (1000) comprising a first connecting part (1210) and a second connecting part (1220), one end of the first connecting part (1210) being connected to one end of the second connecting part (1220), the liquid cooling cavity (5100) being located at one end of the first connecting part (1210) away from the second connecting part (1220), the first connecting part (1210) and the second connecting part (1220) having a first through-flow hole (5510), the first connecting part (1210) further having a second through-flow hole (5520), the first through-flow hole (5510) penetrating through the second connecting part (1220) and being in communication with the liquid cooling cavity (5100), the second through-flow hole (5520) penetrating through the first connecting part (1210) and being in communication with the liquid cooling cavity (5100). A sleeve (3000) comprising a first end (3100) and a second end (3200), the first end (3100) being connected to the first connecting part (1210), the second connecting part (1220) being sleeved in the sleeve (3000), an outer wall of the power terminal (1000) and an inner wall of the sleeve (3000) forming a through-flow area (5400), the first through-flow hole (5510) and the second through-flow hole (5520) both being in communication with the through-flow area (5400), the liquid cooling cavity (5100) being in communication with the through-flow area (5400) through the first through-flow hole (5510), the liquid cooling cavity (5100) further being in communication with the through-flow area (5400) through the second through-flow hole (5520). A power line (4200) being connected to the second connecting part (1220) in the through-flow area (5400). The first through-flow hole (5510) forms a first flow channel, the second through-flow hole (5520) forms a second flow channel, and the first flow channel and the second flow channel are respectively in communication with different positions of the through-flow area (5400). An end surface of the first connecting part (1210) connecting one end of the second connecting part (1220) comprises a first part (1211a) and a second part (1211b).

2. The charging gun (100) according to claim 1, characterized in that The second connecting part (1220) is connected to the first part (1211a), a second part (1211b) and an outer circumferential surface of the second connecting part (1220) form a containing space (5410), at least part of one end of the second through-flow hole (5520) away from the liquid cooling cavity (5100) is located in the second part (1211b), and one end of the second through-flow hole (5520) away from the liquid cooling cavity (5100) is in communication with the containing space (5410). The power line (4200) is connected to the second connecting part (1220) in the containing space (5410). ​ 3. The charging gun (100) according to claim 2, characterized in that An outer circumferential surface of the second connecting portion (1220) comprises a third portion (1221) which is a flat surface; The accommodation space (5410) is formed between the second portion (1211b) and the third portion (1221), and the power line (4200) is connected to the third portion (1221).

4. The charging gun (100) according to claim 1, characterized in that The first liquid pipe (4100) is further included; The first liquid pipe (4100) is sleeved outside the power line (4200), the first liquid pipe (4100) is connected to the second end (3200), and the first liquid pipe (4100) has a liquid cooling flow channel (5600) therein, and the liquid cooling flow channel (5600) is in communication with the through-flow area (5400) through the second end (3200).

5. The charging gun (100) according to claim 4, characterized in that The second end (3200) comprises a third connecting portion (3210) and a first connector (3220), and the third connecting portion (3210) is located between the first connector (3220) and the first end (3100); The first liquid pipe (4100) is sleeved outside the first connector (3220), and the liquid cooling flow channel (5600) is in communication with the through-flow area (5400) through the first connector (3220); The charging gun (100) further comprises a first compression sleeve (6100), the first compression sleeve (6100) is sleeved outside the first liquid pipe (4100) and the third connecting portion (3210), the first compression sleeve (6100) is fixedly connected to the third connecting portion (3210), and the first compression sleeve (6100) is used for compressing the first liquid pipe (4100) on the first connector (3220).

6. The charging gun (100) according to claim 1, characterized in that The first connecting portion (1210) comprises a positioning sub-portion (1211) and a connecting sub-portion (1212); The positioning sub-portion (1211) is located between the connecting sub-portion (1212) and the second connecting portion (1220); The first end (3100) is sleeved outside the positioning sub-portion (1211), an outer circumferential surface of the positioning sub-portion (1211) is used for abutting against an inner wall of the first end (3100), and the first end (3100) is fixedly and sealingly connected to the connecting sub-portion (1212).

7. The charging gun (100) according to claim 6, characterized in that The charging gun (100) further comprises a second compression sleeve (6200) and a sealing member (6300), the sealing member (6300) is arranged between the first end (3100) and the connecting sub-portion (1212), the second compression sleeve (6200) is sleeved outside the sleeve pipe (3000) and the connecting sub-portion (1212), the second compression sleeve (6200) is fixedly connected to the connecting sub-portion (1212), the second compression sleeve (6200) is compressed on the sleeve pipe (3000) and compresses the sealing member (6300) by the first end (3100) and the connecting sub-portion (1212).

8. The charging gun (100) according to any one of claims 1-7, characterized in that, The power terminal (1000) comprises a pin (1100), an adapter (1200) and a flow guide pipe (1400), the pin (1100) is fixedly connected with the adapter (1200); The adapter (1200) comprises the first connecting part (1210) and the second connecting part (1220), the pin (1100) is located on the side of the first connecting part (1210) away from the second connecting part (1220); The liquid cooling cavity (5100) comprises a first sub-cavity (5110) located at the pin (1100) and a second sub-cavity (5120) located at the adapter (1200), the first sub-cavity (5110) and the second sub-cavity (5120) are in communication; The second sub-cavity (5120) is provided with a limiting opening (5700) on the cavity wall away from the first sub-cavity (5110), the first flow hole (5510) and the second flow hole (5520) are located at the end of the limiting opening (5700) away from the second sub-cavity (5120); One end of the flow guide pipe (1400) is located in the limiting opening (5700) and is in communication with the first flow hole (5510) and the second flow hole (5520), the other end of the flow guide pipe (1400) is located in the first sub-cavity (5110) and is in communication with the first sub-cavity (5110).

9. The charging gun (100) according to any one of claims 1-7, characterized in that, A temperature sensor (7000) is further included; The outer surface of the sleeve (3000) has a plurality of positioning grooves (5300) arranged at intervals along the circumference of the sleeve (3000); The temperature sensor (7000) is arranged in one of the positioning grooves (5300).

10. A charging device, characterized by The charging gun (100) comprises a charging pile (200) and the charging gun (100) according to any one of claims 1-9; The charging gun (100) further comprises a second liquid pipe (2000) in communication with the liquid cooling cavity (5100) of the charging gun (100); The charging pile (200) comprises a power supply assembly (210) and a liquid supply assembly (220), the power terminal (1000) of the charging gun (100) is electrically connected with the power supply assembly (210) through the power line (4200) of the charging gun (100), one of the inlet of the liquid supply assembly (220) and the outlet of the liquid supply assembly (220) is in communication with the second liquid pipe (2000), and the other of the inlet of the liquid supply assembly (220) and the outlet of the liquid supply assembly (220) is in communication with the flow area (5400) of the charging gun (100).

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