Charging gun and charging equipment

Abstract

The embodiment of the invention provides a charging gun and charging equipment, and relates to the technical field of charging equipment. The charging gun comprises a power terminal, a sleeve and a power line. The power terminal is provided with a liquid cooling cavity and comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are provided with first through-flow holes, the first connecting part is further provided with second through-flow holes, the first through-flow holes penetrate through the second connecting part and are communicated with the liquid cooling cavity, and the second through-flow holes penetrate through the first connecting part and are communicated with the liquid cooling cavity. The casing pipe is connected with the first connecting part, the second connecting part is sleeved with the casing pipe, a through-flow area is formed between the outer wall of the power terminal and the inner wall of the casing pipe, the first through-flow hole and the second through-flow hole are both communicated with the through-flow area, and the power line is connected with the second connecting part in the through-flow area. In this way, efficient liquid cooling heat dissipation of the power terminal of the charging gun can be conveniently achieved.

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] A 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 electric vehicles is getting larger and larger. Increasing the charging power to shorten the charging time is a way to achieve fast charging. After the charging power is increased, the heat dissipation of the charging gun will increase, and the too high temperature of the charging gun will affect the reliability and other performance of the charging gun. Therefore, the heat dissipation efficiency of the charging gun restricts the improvement of the charging power.

[0003] Liquid cooling heat dissipation for the charging gun is a direction to improve the heat dissipation efficiency of the charging gun. How to achieve liquid cooling heat dissipation for the charging gun has become an urgent problem to be solved in the technical field of charging devices. Summary of the Invention

[0004] The embodiments of the present application provide a charging gun and a charging device, which are convenient for realizing liquid cooling heat dissipation for the power terminals of the charging gun.

[0005] In a first aspect of the embodiments of the present application, a charging gun is provided. The charging gun includes a power terminal, a sleeve, and a power line. The power terminal has a liquid cooling cavity. The power terminal includes a first connection portion and a second connection portion. One end of the first connection portion is connected to one end of the second connection portion. The liquid cooling cavity is located at one end of the first connection portion away from the second connection portion. The first connection portion and the second connection portion have a first through-flow hole. The first connection portion further has a second through-flow hole. The first through-flow hole penetrates through the second connection portion and communicates with the liquid cooling cavity. The second through-flow hole penetrates through the first connection portion and communicates with the liquid cooling cavity. The sleeve includes a first end and a second end. The first end is connected to the first connection portion. The second connection portion is sleeved inside the sleeve. A through-flow region 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 region. The liquid cooling cavity communicates with the through-flow region through the first through-flow hole. The liquid cooling cavity also communicates with the through-flow region through the second through-flow hole. The power line is connected to the second connection portion inside the through-flow region.

[0006] The charging gun provided by the embodiments of the present application can realize the connection 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 region formed inside the sleeve, which can make the connection between the liquid cooling cavity and the liquid cooling flow channel of the cable more convenient and is convenient for realizing liquid cooling heat dissipation for the power terminal.

[0007] By setting the first flow hole and the second flow hole, the liquid cooling cavity and the flow-through area are connected at two different positions respectively, which is convenient for realizing the confluence or shunt between the liquid cooling cavity and the flow-through area. The cooling medium can have good fluidity at the positions where the flow-through area is connected to the first flow hole and where the flow-through area is connected to the second flow hole, and the overall fluidity of the cooling medium in the flow-through area can be good. Furthermore, it is beneficial to the smooth flow of the cooling medium between different positions at the end of the flow-through area far from the liquid cooling cavity. The smooth flow of the cooling medium is conducive to improving the heat dissipation efficiency of the charging gun.

[0008] The first flow hole is provided in the first connecting part and the second connecting part and penetrates through the second connecting part, which can reduce the number of corners for the cooling medium to flow between the first flow hole and the end of the flow-through area far from the liquid cooling cavity, and make the flow of the cooling medium between the first flow hole and the end of the flow-through area far from the liquid cooling cavity smoother. In addition, the sleeve is not easy to block the first flow hole, which is beneficial to the smooth flow of the cooling medium between the first flow 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 part between the power line and the power terminal is located in the flow-through area. The cooling medium in the flow-through area can perform relatively efficient liquid cooling and heat dissipation on the connection part between the power line and the power terminal.

[0010] Exemplarily, the first connecting part and the second connecting part are of an integral structure, that is to say, the first connecting part and the second connecting part are different parts of a structural member.

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

[0012] Exemplarily, the liquid cooling cavity, the first flow hole, the second flow hole and the flow-through area are all used for the flow of the cooling medium. The first flow hole is used for part of the cooling medium to flow between the liquid cooling cavity and a position of the flow-through area, and the second flow hole is used for another part of the cooling medium to flow between the liquid cooling cavity and another position of the flow-through area.

[0013] Exemplarily, the two ends of the first flow hole are arranged at intervals in the arrangement direction of the first connection part and the second connection part, and the two ends of the second flow hole are arranged at intervals in the arrangement direction of the first connection part and the second connection part, so that there are fewer corners for the cooling medium to flow between the first flow hole and the second flow hole and the end of the flow area away from the liquid cooling cavity, and the cooling medium can flow more smoothly between the first flow hole and the second flow hole and the end of the flow area away from the liquid cooling cavity. In addition, it is relatively easy to open the first flow hole and the second flow hole. Moreover, the sleeve is not likely to block the first flow hole and the second flow hole, which is beneficial to the smooth flow of the cooling medium between the first flow hole and the flow area, and between the second flow hole and the flow area. Furthermore, a relatively large interval does not need to be left between the inner wall in the radial direction of the sleeve and the outer wall of the power terminal, and the part of the power terminal located inside the sleeve can have a relatively large radial dimension, which can reduce the manufacturing difficulty of the power terminal.

[0014] Exemplarily, both the first flow hole and the second flow hole extend along the arrangement direction of the first connection part and the second connection part.

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

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

[0017] Exemplarily, part of the first flow hole and the second flow hole overlap. Along the arrangement direction of the first connection part and the second connection part, part of the projection of the first flow hole overlaps with part of the projection of the second flow hole, and the first flow hole communicates with the liquid cooling cavity through the second flow hole, so as to facilitate the arrangement of the first flow hole and the second flow hole in a relatively small space.

[0018] Exemplarily, the power terminal further includes a plug-in part, the first connection part is located between the plug-in part and the second connection part, the plug-in part, the first connection part and the second connection part are arranged along the length direction of the power terminal, the two ends of the first flow hole are arranged at intervals in the length direction of the power terminal, and the two ends of the second flow hole are arranged at intervals in the length direction of the power terminal, so that there are fewer corners for the cooling medium to flow between the liquid cooling cavity and the flow area, and the flow is relatively smooth.

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

[0020] In some possible embodiments, the end face of the first connecting portion connecting one end of the second connecting portion includes a first part and a second part. The second connecting portion is connected to the first part, and a receiving space is formed between the second part and the outer peripheral surface of the second connecting portion. At least a part of the end of the second through-flow hole away from the liquid cooling cavity is located in the second part, and the end of the second through-flow hole away from the liquid cooling cavity communicates with the receiving space. The power line is connected to the second connecting portion within the receiving space. In this way, the receiving space can provide a space for connecting the power line and the power terminal, making it more convenient to connect the power line and the power terminal within the sleeve. In addition, since the second through-flow hole communicates with the receiving space, the fluidity of the cooling medium at the connection between the power line and the power terminal is better, which is conducive to efficient heat dissipation at the connection between the power line and the power terminal. Additionally, the first through-flow hole and the second through-flow hole can respectively communicate with parts of the flow-through area located on both sides of the power line, so as to facilitate the flow of the cooling medium in the parts of the flow-through area located on both sides of the power line.

[0021] Exemplarily, the first part and the second part are different parts of the end face of the first connecting portion connecting one end of the second connecting portion, that is to say, both the first part and the second part belong to the end face of the first connecting portion connecting one end of the second connecting portion.

[0022] Exemplarily, the flow-through area includes a receiving space and a communicating space. The communicating space is located on the side of the receiving space and the second connecting portion away from the first connecting portion. The first through-flow hole communicates with the communicating space, and the second through-flow hole communicates with the communicating space through the receiving space.

[0023] Exemplarily, the first flow channel communicates with the communicating space, the second flow channel communicates with the receiving space, and the whole formed by the series connection of the second flow channel and the receiving space is in parallel with the first flow channel. The second flow channel communicates with the communicating space through the receiving space.

[0024] Exemplarily, the first through-flow hole is used for allowing part of the cooling medium to flow between the liquid cooling cavity and the communicating space, and the second through-flow hole and the receiving space are used for allowing another part of the cooling medium to flow between the liquid cooling cavity and the communicating space.

[0025] In some possible embodiments, the outer peripheral surface of the second connecting portion includes a third part, and the third part is a plane. A receiving space is formed between the second part and the third part, and the power line is connected to the third part. In this way, the connection between the power line and the second connecting portion is easier. In addition, the structure of the second connecting portion is simple and it is more convenient to be formed.

[0026] In some possible embodiments, 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 to the second end, and a liquid cooling flow channel is provided in the first liquid pipe. The liquid cooling flow channel is communicated with the flow-through area through the second end. In this way, it is convenient to realize the connection between the sleeve and the liquid supply component of the charging pile, and the connection between the flow-through area and the liquid supply component, so as to realize efficient liquid cooling and heat dissipation for the power terminals. In addition, by using the sleeve to connect the power terminals to the first liquid pipe, it is more convenient to communicate the liquid cooling cavity with the liquid cooling flow channel in the first liquid pipe.

[0027] In some possible embodiments, the second end includes a third connection portion and a first joint. The third connection 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 flow-through area through the first joint. The charging gun further includes a first compression sleeve. The first compression sleeve is sleeved outside the first liquid pipe and the third connection portion. The first compression sleeve is fixedly connected to the third connection portion, and the first compression sleeve presses the first liquid pipe against the first joint. In this way, it is relatively easy to achieve a sealed connection between the first liquid pipe and the sleeve.

[0028] In some possible embodiments, the first connection portion includes a positioning sub-portion and a connection sub-portion. The positioning sub-portion is located between the connection sub-portion and the second connection portion. The first end is sleeved outside the positioning sub-portion. The outer peripheral surface of the positioning sub-portion is used to abut against the inner wall of the first end. The first end is fixedly and sealingly connected to the connection sub-portion. In this way, through the positioning of the positioning sub-portion, it is relatively easy to assemble the sleeve and the power terminals. In addition, through the limitation of the positioning sub-portion, the sleeve is not easily displaced relative to the power terminals, and the stability after the connection between the sleeve and the power terminals can be better.

[0029] In some possible embodiments, the charging gun further includes a second compression sleeve and a seal. The seal is provided between the first end and the connection sub-portion. The second compression sleeve is sleeved outside the sleeve and the connection sub-portion. The second compression sleeve is fixedly connected to the connection sub-portion. The second compression sleeve presses on the sleeve and causes the first end and the connection sub-portion to press the seal tightly. In this way, it is relatively easy to achieve a sealed connection between the sleeve and the power terminals.

[0030] In some possible embodiments, the power terminal includes a pin, an adapter, and a diversion tube. The pin is fixedly connected to the adapter. The adapter includes a first connection portion and a second connection portion. The pin is located on a side of the first connection portion away from the second connection portion. The liquid cooling cavity includes a first sub-cavity located in the pin and a second sub-cavity located in the adapter. The first sub-cavity communicates with the second sub-cavity. A limiting port is provided on a cavity wall of the second sub-cavity away from the first sub-cavity. Both the first through-flow hole and the second through-flow hole are located at an end of the limiting port away from the second sub-cavity. One end of the diversion tube is disposed in the limiting port and communicates with the first through-flow hole and the second through-flow hole. The other end of the diversion tube is located in the first sub-cavity and communicates with the first sub-cavity. In this way, through the diversion tube, the cooling medium can be guided into the pin. The fluidity of the cooling medium in the pin is relatively good, which is conducive to enabling the relatively hot pin to fully exchange heat with the cooling medium, and the heat dissipation effect on the pin is relatively good. In addition, by using a separate pin and adapter to form the liquid cooling cavity and making one end of the diversion tube pass through the limiting port, the setting of the diversion tube is relatively convenient.

[0031] In some possible embodiments, the adapter further includes a fourth connection portion. The first connection portion is located between the fourth connection portion and the second connection portion. The pin is located on a side of the fourth connection portion away from the first connection portion. The fourth connection portion has a through-flow port communicating with the second sub-cavity. The through-flow port is used to communicate with a second liquid tube. In this way, it is convenient to connect the second liquid tube to the liquid cooling cavity outside the sleeve, and the influence of the sleeve on the connection between the second liquid tube and the power terminal is relatively small.

[0032] In some possible embodiments, the charging gun further includes a temperature sensor. The outer surface of the sleeve has a plurality of positioning grooves arranged at intervals along the circumferential direction of the sleeve. The temperature sensor is disposed in one of the positioning grooves. In this way, through the temperature sensor provided on the outer wall of the sleeve, it is convenient to detect the temperature of the power terminal, and the wiring of the temperature sensor is also relatively convenient. In addition, by providing a plurality of positioning grooves arranged at intervals along the circumferential direction of the sleeve on the outer surface of the sleeve, it is convenient to set the temperature sensor at a preset relative position to the power terminal when the sleeve rotates to different positions.

[0033] Exemplarily, the positioning grooves located on the outer surface of the sleeve are evenly distributed along the circumferential direction of the sleeve.

[0034] In a second aspect of the embodiments of the present application, a charging device is provided. The charging device includes a charging pile and the charging gun in any of the above embodiments. The charging gun further includes a second liquid tube. The second liquid tube communicates with the liquid cooling cavity of the charging gun. The charging pile includes a power supply component and a liquid supply component. The power terminal of the charging gun is electrically connected to the power supply component through the power line of the charging gun. One of the inlet and the outlet of the liquid supply component communicates with the second liquid tube, and the other of the inlet and the outlet of the liquid supply component communicates with the through-flow area of the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of a charging device provided by an embodiment of the present application;

[0036] Figure 2 Schematic diagram of a charging gun provided by an embodiment of the present application;

[0037] Figure 3 For Figure 2 Cross-sectional view at the power terminal of the charging gun provided in

[0038] Figure 4 For Figure 2 Another cross-sectional view at the power terminal of the charging gun provided in

[0039] Figure 5 Schematic diagram of a power terminal provided by an embodiment of the present application;

[0040] Figure 6 For Figure 5 Connection diagram of the power terminal and the power line provided in

[0041] Figure 7 For Figure 2 Another cross-sectional view at the power terminal of the charging gun provided in

[0042] Figure 8 Schematic diagram of a pin provided by an embodiment of the present application;

[0043] Figure 9 For Figure 8 Cross-sectional view of the pin provided in

[0044] Figure 10 Schematic diagram of a perspective of an adapter provided by an embodiment of the present application;

[0045] Figure 11 For Figure 10 Schematic diagram of another perspective of the adapter provided in

[0046] Figure 12 For Figure 5 Explosion diagram of the power terminal provided in

[0047] Figure 13 Cross-sectional view of a first compression sleeve provided by an embodiment of the present application;

[0048] Figure 14 Schematic diagram of a sleeve provided by an embodiment of the present application;

[0049] Figure 15 For Figure 14 Cross-sectional view of the sleeve provided in

[0050] Figure 16 Schematic diagram of a second compression sleeve provided by an embodiment of the present application;

[0051] Figure 17 For Figure 2 Another cross-sectional schematic diagram at the power terminal of the charging gun provided in

[0052] Figure 18 For Figure 2 Explosion schematic diagram at the power terminal of the charging gun provided in

[0053] Explanation of reference numerals:

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

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

[0056] 2000, second liquid pipe;

[0057] 3000, sleeve; 3100, first end; 3110, sealing groove; 3120, first locking part; 3200, second end; 3210, third connection 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 port; 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 port; 5800, liquid passing port;

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

[0061] 7000, temperature sensor. Detailed implementation manners

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

[0063] Figure 1 It is a schematic diagram of a charging device provided for an embodiment of this application.

[0064] As Figure 1 shown, an embodiment of this 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 realizing the transmission of 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 supercharging 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 (such as 1000A, 800V).

[0065] The charging gun 100 includes a gun head 110 and a cable 120, and both 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 component 210. The power supply component 210 is electrically connected to the gun head 110 through the cable 120. The power supply component 210 can be electrically connected to the commercial power through a charging host. The charging host can convert the current provided by the commercial power into the current required for charging the electric vehicle, and the power supply component 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 component 220. The liquid supply component 220 is communicated with the gun head 110 through the cable 120. The liquid supply component 220, the cable 120 and the gun head 110 form a cooling medium circulation loop. The liquid supply component 220 can provide a cooling medium to the cable 120 and the gun head 110. After absorbing heat in the charging gun 100, the cooling medium can flow back to the liquid supply component 220 to realize liquid cooling and heat dissipation of the charging gun 100.

[0068] Figure 2 It is a schematic diagram at the power terminal of a charging gun provided for an embodiment of this application.

[0069] The gun head 110 includes a power terminal 1000. The power supply assembly 210 is electrically connected to the power terminal 1000 through a cable 120. The power supply assembly 210 can deliver the current required for charging an electric vehicle 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 includes a plurality of power terminals 1000. One or more of the power terminals 1000 are positive power terminals, and one or more of the power terminals 1000 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 may include 2 power terminals 1000, one of which is a positive power terminal and the other is a negative power terminal.

[0071] The cable 120 includes a power cable 4000. One end of the power cable 4000 is electrically connected to the power supply assembly 210, and the other end of the power cable 4000 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. Exemplarily, the cable 120 includes a plurality of power cables 4000 that correspond one-to-one with the power terminals 1000. The power cables 4000 are connected to the corresponding power terminals 1000, and 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 is Figure 2 a schematic cross-sectional view at the power terminal of the charging gun provided in Figure 3 The cross-section in is the cross-section passing through the axis of the second joint 1300 and the axis of the power terminal 1000 at one of the power terminals 1000 of the charging gun 100. Figure 3 The direction indicated by the dotted arrow in 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 channel 5600 is in communication with the inlet of the liquid supply assembly 220.

[0073] such as Figure 2 、 Figure 3As shown, the cable 120 further includes a second liquid pipe 2000. A liquid cooling cavity 5100 is provided inside the power terminal 1000. A liquid cooling flow channel 5600 is provided inside the power cable 4000. The second liquid pipe 2000 communicates with the liquid cooling cavity 5100, and the liquid cooling flow channel 5600 communicates with the liquid cooling cavity 5100. One of the inlet and the outlet of the liquid supply assembly 220 communicates with the second liquid pipe 2000, and the other of the inlet and the outlet of the liquid supply assembly 220 communicates 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 perform liquid cooling and heat dissipation on the power terminal 1000 and the power cable 4000. At this time, there can be a short heat exchange path and a large heat exchange surface between the cooling medium in the liquid cooling cavity 5100 and the power terminal 1000, and the heat dissipation efficiency of the cooling medium for the power terminal 1000 is relatively high.

[0074] Exemplarily, the cooling medium can be an insulating medium such as cooling oil.

[0075] As Figure 3 shown, in some examples, the second liquid pipe 2000 communicates with the outlet of the liquid supply assembly 220, and the liquid cooling flow channel 5600 communicates 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. After the cooling medium dissipates heat from the power terminal 1000 in the liquid cooling cavity 5100, it then flows into the liquid cooling flow channel 5600 to dissipate heat from the power cable 4000, and flows 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 first dissipates heat from the power terminal 1000 with a large heat generation amount and a high temperature, and the heat dissipation effect on the power terminal 1000 with a large heat generation amount and a high temperature is good, which is beneficial to improving the charging power of the charging gun 100.

[0076] In some other examples, the second liquid pipe 2000 communicates with the inlet of the liquid supply assembly 220, and the liquid cooling flow channel 5600 communicates 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 from the power cable 4000. After dissipating heat from the power cable 4000, it then flows into the liquid cooling cavity 5100 to dissipate heat from the power terminal 1000. After dissipating heat from the power terminal 1000, it then flows 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 first dissipates heat from the power cable 4000 with a small heat generation amount and a low temperature, and then dissipates heat from the power terminal 1000 with a large heat generation amount and a high temperature, and the utilization efficiency of the cooling medium is relatively high.

[0077] As Figure 2As shown, in some examples, the cable 120 includes a plurality of second liquid pipes 2000 that correspond one-to-one with the power terminals 1000. Each second liquid pipe 2000 is connected to the corresponding power terminal 1000, and each second liquid pipe 2000 communicates with the liquid cooling cavity 5100 of the corresponding power terminal 1000. That is to say, different power terminals 1000 are connected to different second liquid pipes 2000, and the liquid cooling cavities 5100 of different power terminals 1000 are fed or discharged through different second liquid pipes 2000.

[0078] In other examples, a plurality of power terminals 1000 are connected to the same second liquid pipe 2000, and the liquid cooling cavities 5100 of the plurality of power terminals 1000 communicate with the same second liquid pipe 2000. That is to say, the liquid cooling cavities 5100 of a plurality of different power terminals 1000 are fed or discharged through the same second liquid pipe 2000. At this time, the plurality of power terminals 1000 can be connected to the same second liquid pipe 2000 through a joint with a plurality of ports. For example, a second liquid pipe 2000 can be connected to two power terminals 1000 through a tee joint.

[0079] As Figure 3 shown, exemplarily, the power terminal 1000 has a flow port 5200 communicating with the liquid cooling cavity 5100, and the second liquid pipe 2000 communicates with the liquid cooling cavity 5100 through the flow port 5200.

[0080] Exemplarily, the power cable 4000 includes a power line 4200 and a first liquid pipe 4100. The first liquid pipe 4100 is sleeved outside the power line 4200. The first liquid pipe 4100 has a liquid cooling flow channel 5600 inside. One end of the first liquid pipe 4100 is connected to the liquid supply assembly 220, and the other end of the first liquid pipe 4100 is connected to the power terminal 1000, so that both ends of the liquid cooling flow channel 5600 communicate with the liquid cooling cavity 5100 and the liquid supply assembly 220 respectively. One end of the power line 4200 is electrically connected to the power supply assembly 210, and the other end of the power line 4200 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 flow channel 5600 can dissipate heat from the power line 4200. There can be a short heat exchange path and a large heat exchange surface between the cooling medium in the liquid cooling cavity 5100 and the power line 4200, and the heat dissipation efficiency of the cooling medium for the power line 4200 is relatively high.

[0081] In some examples, there is a liquid cooling flow channel 5600 between the power line 4200 and the first liquid pipe 4100. That is to say, there is a liquid cooling flow channel 5600 outside the power line 4200. At this time, the cooling medium in the liquid cooling flow 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, there may be one or more liquid cooling channels 5600 between the power line 4200 and the first liquid pipe 4100.

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

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

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

[0086] In some examples, there is a liquid cooling channel 5600 (not shown) inside the power line 4200. At this time, the cooling medium in the liquid cooling channel 5600 can exchange heat with the power line 4200 on the inner side of the power line 4200 to achieve heat dissipation of the power line 4200.

[0087] Exemplarily, the power cable 4000 further includes a support member, and the power line 4200 is sleeved on the outer surface of the support member to form a liquid cooling channel 5600 inside the power line 4200. For example, the support member may be a hollow tube.

[0088] Exemplarily, there is a liquid cooling channel 5600 between the power line 4200 and the first liquid pipe 4100, and there is also a liquid cooling channel 5600 inside the power line 4200. At this time, the heat exchange surface between the cooling medium and the power line 4200 is large, and the heat dissipation effect of the cooling medium on the power line 4200 is good.

[0089] As Figure 3 shown, exemplarily, the power terminal 1000 includes a second joint 1300. The second joint 1300 is arranged at the flow-through port 5200 and communicates with the liquid cooling cavity 5100 through the flow-through port 5200. The second liquid pipe 2000 is connected to the second joint 1300 and communicates with the second joint 1300, so that the second liquid pipe 2000 communicates with the liquid cooling cavity 5100 through the second joint 1300 and the flow-through port 5200.

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

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

[0092] Exemplarily, the first connection portion 1210 and the second connection portion 1220 are of an integral structure. That is to say, the first connection portion 1210 and the second connection portion 1220 are different parts of a 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 connection portion 1210. The second connection portion 1220 is sleeved inside the sleeve 3000. There is a current-carrying area 5400 between the outer wall of the power terminal 1000 and the inner wall of the sleeve 3000. The power terminal 1000 also has a connecting structure 5500 that connects the liquid cooling cavity 5100 and the current-carrying area 5400. The power line 4200 is connected to the second connection portion 1220 within the current-carrying area 5400.

[0094] The first liquid pipe 4100 is connected to the second end 3200. The liquid cooling channel 5600 is connected to the current-carrying area 5400 through the second end 3200. One of the inlet and the outlet of the liquid supply assembly 220 is connected to the second liquid pipe 2000, and the other of the inlet and the outlet of the liquid supply assembly 220 is connected to the current-carrying area 5400 through the liquid cooling channel 5600. The liquid supply assembly 220, the liquid cooling channel 5600, the current-carrying area 5400, the connecting 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 setting the sleeve 3000 to connect the power terminal 1000 to the first liquid pipe 4100, it is convenient to connect the liquid cooling cavity 5100 to the liquid cooling channel 5600 in the first liquid pipe 4100, facilitating the liquid cooling and heat dissipation of the power terminal 1000. In addition, the connection between the power line 4200 and the power terminal 1000 is located inside the sleeve 3000, and the cooling medium inside the sleeve 3000 can perform liquid cooling and heat dissipation on the connection between the power line 4200 and the power terminal 1000.

[0096] Exemplarily, the plugging portion 1110, the first connection portion 1210, and the second connection portion 1220 are arranged along the length direction of the power terminal 1000.

[0097] Exemplarily, a part of the liquid cooling cavity 5100 is located at the plug-in part 1110 to facilitate liquid cooling and heat dissipation of the plug-in part 1110.

[0098] Exemplarily, the flow-through port 5200 is located between the plug-in part 1110 and the first connection part 1210. The flow-through port 5200, the second joint 1300, and the second liquid pipe 2000 are located outside the sleeve 3000, such that the influence of the sleeve on the connection between the second liquid pipe 2000 and the power terminal 1000 is relatively small.

[0099] As Figure 3 shown, in some possible implementation manners, the second end 3200 includes a third connection part 3210 and a first joint 3220. The third connection part 3210 is located between the first joint 3220 and the first end 3100. The first liquid pipe 4100 is sleeved outside the first joint 3220. The liquid cooling flow channel 5600 is communicated with the flow-through area 5400 through the first joint 3220. The charging gun 100 further includes a first pressing sleeve 6100. The first pressing sleeve 6100 is sleeved outside the first liquid pipe 4100 and the third connection part 3210. The first pressing sleeve 6100 is fixedly connected to the third connection part 3210. The first pressing sleeve 6100 presses the first liquid pipe 4100 against the first joint 3220 to enable a sealed connection between the first liquid pipe 4100 and the first joint 3220.

[0100] In this way, it is relatively easy to achieve a sealed connection between the first liquid pipe 4100 and the sleeve 3000.

[0101] Exemplarily, the first pressing sleeve 6100 is detachably connected to the third connection part 3210.

[0102] In some examples, the first pressing sleeve 6100 can be threadedly connected to the third connection part 3210.

[0103] In other examples, the first pressing sleeve 6100 can be snap-connected to the third connection part 3210.

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

[0105] In this way, by positioning the positioning sub - part 1211, the assembly of the sleeve 3000 and the power terminal 1000 can be made easier. Additionally, by limiting the position of the positioning sub - part 1211, the sleeve 3000 is not easily displaced relative to the power terminal 1000, and the stability after the connection between the sleeve 3000 and the power terminal 1000 can be better.

[0106] The charging gun 100 further includes a second compression sleeve 6200 and a seal 6300. The seal 6300 is disposed between the first end 3100 and the connection sub - part 1212. The second compression sleeve 6200 is sleeved outside the sleeve 3000 and the connection sub - part 1212. The second compression sleeve 6200 is fixedly connected to the connection sub - part 1212. The second compression sleeve 6200 is crimped on the sleeve 3000, and the first end 3100 and the connection sub - part 1212 press the seal 6300 tightly, so that the first end 3100 and the connection sub - part 1212 are hermetically connected.

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

[0108] Exemplarily, both the positioning sub - part 1211 and the connection sub - part 1212 are cylindrical structures. The positioning sub - part 1211, the connection 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 connection sub - part 1212.

[0109] Exemplarily, the second compression sleeve 6200 is detachably connected to the connection sub - part 1212.

[0110] In some examples, the second compression sleeve 6200 can be threadedly connected to the connection sub - part 1212.

[0111] In other examples, the second compression sleeve 6200 can be snap - connected to the connection sub - part 1212.

[0112] As Figure 3 shown, in some possible implementation manners, the communication structure 5500 extends along the arrangement direction of the first connection part 1210 and the second connection part 1220.

[0113] In this way, there are fewer corners for the cooling medium to flow between the communication structure 5500 and the end of the flow-through area 5400 away from the liquid cooling cavity 5100, which can make the flow of the cooling medium between the communication structure 5500 and the end of the flow-through area 5400 away from the liquid cooling cavity 5100 smoother. The smooth flow of the cooling medium is conducive to improving the heat dissipation efficiency of the charging gun 100. In addition, it is relatively easy to open the communication structure 5500 extending along the arrangement direction of the first connecting portion 1210 and the second connecting portion 1220. Moreover, the sleeve 3000 is not likely to block the communication structure 5500, which is conducive to the smooth flow of the cooling medium between the communication structure 5500 and the flow-through area 5400. Furthermore, there is no need to leave a large gap between the inner wall of the sleeve 3000 in the radial direction and the outer wall of the power terminal 1000. The portion of the power terminal 1000 located inside the sleeve 3000 can have a relatively large radial dimension, which can reduce the manufacturing difficulty of the power terminal 1000.

[0114] When the insertion 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, there are fewer corners for the cooling medium to flow between the liquid cooling channel 5600 and the liquid cooling cavity 5100, which can make the flow of the cooling medium smoother.

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

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

[0117] In this way, the connection between the liquid cooling cavity 5100 and the liquid cooling channel 5600 can be realized through the first flow-through hole 5510, the second flow-through hole 5520, and the flow-through area 5400, which can make the connection between the liquid cooling cavity 5100 and the liquid cooling channel 5600 more convenient and facilitate the liquid cooling and heat dissipation of the power terminal 1000. In addition, by providing the first flow-through hole 5510 and the second flow-through hole 5520, the liquid cooling cavity 5100 and the flow-through area 5400 are connected at two different positions respectively, which is convenient for realizing the confluence or diversion between the liquid cooling cavity 5100 and the flow-through area 5400. The cooling medium can have good fluidity at the position where the flow-through area 5400 communicates with the first flow-through hole 5510 and at the position where the flow-through area 5400 communicates with the second flow-through hole 5520, and the overall fluidity of the cooling medium in the flow-through area 5400 can be better. Furthermore, it is beneficial to the smooth flow of the cooling medium between different positions at the end of the flow-through area 5400 far from the liquid cooling cavity 5100. The smooth flow of the cooling medium is conducive to improving the heat dissipation efficiency of the charging gun 100. In addition, the first flow-through hole 5510 is provided at the first connection portion 1210 and the second connection portion 1220 and penetrates through the second connection portion 1220, which can reduce the number of corners for the cooling medium to flow between the first flow-through hole 5510 and the end of the flow-through area 5400 far from the liquid cooling cavity 5100, and make the flow of the cooling medium between the first flow-through hole 5510 and the end of the flow-through area 5400 far from the liquid cooling cavity 5100 smoother. In addition, the sleeve 3000 is not likely to block the first flow-through hole 5510, which is beneficial to the smooth flow of the cooling medium between the first flow-through hole 5510 and the flow-through area 5400.

[0118] Exemplarily, one end of the first flow-through hole 5510 far from the liquid cooling cavity 5100 and one end of the second flow-through hole 5520 far from the liquid cooling cavity 5100 communicate with the flow-through area 5400.

[0119] Exemplarily, a first flow channel is formed in the first flow hole 5510, and a second flow channel is formed in the second flow hole 5520. The first flow channel and the second flow channel are in parallel connection, and the first flow channel and the second flow channel are respectively communicated with different positions of the flow region 5400.

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

[0121] In some examples, the two ends of the first flow hole 5510 are arranged at intervals in the arrangement direction of the first connection portion 1210 and the second connection portion 1220, and the two ends of the second flow hole 5520 are arranged at intervals in the arrangement direction of the first connection portion 1210 and the second connection portion 1220, so that there are fewer corners when the cooling medium flows between the first flow hole 5510 and the second flow hole 5520 and the end of the flow region 5400 far from the liquid cooling cavity 5100, and the cooling medium can flow smoothly between the first flow hole 5510 and the second flow hole 5520 and the end of the flow region 5400 far from the liquid cooling cavity 5100. Moreover, the first flow hole 5510 and the second flow hole 5520 are also relatively easy to open.

[0122] Exemplarily, both the first flow hole 5510 and the second flow hole 5520 extend along the arrangement direction of the first connection portion 1210 and the second connection portion 1220.

[0123] When the plugging portion 1110, the first connection portion 1210, and the second connection portion 1220 are arranged along the length direction of the power terminal 1000, both the first flow hole 5510 and the second flow hole 5520 extend along the length direction of the power terminal 1000.

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

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

[0126] Exemplarily, a part of the first flow hole 5510 and the second flow hole 5520 overlap. Along the arrangement direction of the first connection part 1210 and the second connection part 1220, a part of the projection of the first flow hole 5510 coincides with a part of the projection of the second flow hole 5520. The first flow hole 5510 can communicate with the liquid cooling cavity 5100 through the second flow hole 5520, so as to facilitate the arrangement of the first flow hole 5510 and the second flow hole 5520 in a smaller space.

[0127] Exemplarily, along the arrangement direction of the first connection part 1210 and the second connection part 1220, the projection of the first flow hole 5510 is located within the projection of the second connection part 1220.

[0128] Exemplarily, the second flow hole 5520 is coaxially arranged with the first connection part 1210, making it easier to open the second flow hole 5520.

[0129] As Figure 5 shown, a receiving space 5410 is formed between the end face of one end of the first connection part 1210 connecting the second connection part 1220 and the outer peripheral surface of the second connection part 1220. Specifically, the end face of the first connection part 1210 connecting one end of the second connection part 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 the first connection part 1210 connecting one end of the second connection part 1220. That is to say, both the first part 1211a and the second part 1211b belong to the end face of the first connection part 1210 connecting one end of the second connection part 1220. The second connection part 1220 is connected to the first part 1211a, and a receiving space 5410 is formed between the second part 1211b and the outer peripheral surface of the second connection part 1220. At least a part of the end of the second flow hole 5520 away from the liquid cooling cavity 5100 is located in the second part 1211b, and the end of the second flow hole 5520 away from the liquid cooling cavity 5100 communicates with the receiving space 5410.

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

[0131] Exemplarily, the first flow channel communicates with the communicating space 5420, the second flow channel communicates with the receiving space 5410. The whole formed by the series connection of the second flow channel and the receiving space 5410 is in parallel with the first flow channel, and the second flow channel communicates with the communicating space 5420 through the receiving space 5410.

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

[0133] As Figure 3 , Figure 4 shown, the power line 4200 is connected to the second connection part 1220 within the accommodation space 5410.

[0134] In this way, the accommodation space 5410 can provide a space for connecting the power line 4200 to the power terminal 1000, making it more convenient to connect the power line 4200 to the power terminal 1000 within the sleeve 3000. In addition, the second flow hole 5520 communicates with the accommodation space 5410, enabling better fluidity of the cooling medium at the connection between the power line 4200 and the power terminal 1000, which is beneficial for efficient heat dissipation at the connection between the power line 4200 and the power terminal 1000. Additionally, the first flow hole 5510 and the second flow hole 5520 can respectively communicate with the parts of the flow region 5400 located on both sides of the power line 4200, so as to facilitate the flow of the cooling medium in the parts of the flow region 5400 located on both sides of the power line 4200.

[0135] Exemplarily, the end face of the positioning sub - part 1211 connecting one end of the second connection part 1220 includes a first part 1211a and a second part 1211b. An accommodation space 5410 is formed between the end face of the positioning sub - part 1211 connecting one end of the second connection part 1220 and the outer peripheral surface of the second connection part 1220.

[0136] Exemplarily, the power line 4200 can be welded to the second connection part 1220 to achieve 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 connection part 1220 by ultrasonic welding.

[0137] Exemplarily, along the arrangement direction of the first connection part 1210 and the second connection part 1220, at least part of the projection of the second flow hole 5520 is located outside the projection of the second connection part 1220.

[0138] Exemplarily, along the arrangement direction of the first connection part 1210 and the second connection part 1220, part of the projection of the second flow hole 5520 is located outside the projection of the second connection part 1220, and part of the projection of the second flow hole 5520 is covered by the projection of the second connection part 1220.

[0139] Figure 6 For Figure 5 the connection schematic diagram of the power terminal and the power line provided inFigure 7 Another cross-sectional schematic diagram at the power terminal of the charging gun provided in Figure 2 . The cross-section in Figure 7 is a cross-section perpendicular to the axis of the sleeve 3000.

[0140] As shown in Figure 6 and Figure 7 , the outer peripheral surface of the second connection portion 1220 includes a third portion 1221 and a fourth portion 1222 that are connected end to end along the circumferential direction of the second connection portion 1220. A receiving 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 implementation manners, the third portion 1221 is a plane.

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

[0143] Exemplarily, the third portion 1221 may be a plane parallel to the arrangement direction of the first connection portion 1210 and the second connection portion 1220, or the third portion 1221 may also be a plane inclined to the arrangement direction of the first connection portion 1210 and the second connection portion 1220.

[0144] In some other possible implementation manners, the third portion 1221 may be a concave arc surface (not shown).

[0145] As shown in Figure 6 and Figure 7 , in some possible implementation manners, the fourth portion 1222 extends along the circumferential direction of the first connection portion 1210.

[0146] In this way, the size of the second connection portion 1220 can be made larger, which is beneficial to opening the first current-carrying hole 5210 on the second connection portion 1220.

[0147] Exemplarily, the fourth portion 1222 is in clearance fit with the sleeve 3000, so that the assembly of the sleeve 3000 and the power terminal 1000 is relatively easy.

[0148] Exemplarily, the fourth portion 1222 is an arc surface.

[0149] Exemplarily, the shape of the projection of the second connection portion 1220 along the arrangement direction of the first connection portion 1210 and the second connection portion 1220 is a bow shape. For example, the shape of the projection of the second connection portion 1220 along the arrangement direction of the first connection portion 1210 and the second connection portion 1220 may be a semi-circular bow shape.

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

[0151] As Figure 7 shown, exemplarily, the power terminal 1000 further includes a fourth connecting portion 1230. The fourth connecting portion 1230 is located between the plugging 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. The current-carrying port 5200 is located at the fourth connecting portion 1230 (as Figure 10 shown), and the second joint 1300 is fixedly connected to the fourth connecting portion 1230.

[0152] In this way, it is convenient to realize the connection between the second liquid pipe 2000 and the power terminal 1000 outside the sleeve 3000, making the connection between the second liquid pipe 2000 and the power terminal 1000 relatively convenient.

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

[0154] Exemplarily, a part of the liquid cooling cavity 5100 is located at the fourth connecting portion 1230 to facilitate the communication between the current-carrying port 5200 and the liquid cooling cavity 5100.

[0155] Figure 8 It is a schematic diagram of a pin provided by an embodiment of the present application. Figure 9 For Figure 8 is a cross-sectional schematic diagram of the pin provided in Figure 9 The cross-section in

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

[0157] Figure 10 It is a schematic diagram of one perspective of an adapter provided by an embodiment of the present application. Figure 11 For Figure 10 is a schematic diagram of another perspective of the adapter provided in Figure 12 For Figure 5 is an exploded schematic diagram of the power terminal provided in

[0158] As Figures 10 - 12As shown, the power terminal 1000 further includes an adapter 1200. The adapter 1200 includes a first connection portion 1210, a second connection portion 1220, and a fourth connection portion 1230. That is to say, the first connection portion 1210, the second connection portion 1220, and the fourth connection portion 1230 are different parts of the adapter 1200. The second connector 1300 is fixedly connected to the adapter 1200. The liquid cooling cavity 5100 further includes a second sub-cavity 5120 located in the adapter 1200. A part of the second sub-cavity 5120 is located in the fourth connection portion 1230. The flow port 5200 communicates with the second sub-cavity 5120. The pin 1100 is fixedly connected to the adapter 1200. The pin 1100 is located on the side of the first connection portion 1210 away from the second connection portion 1220. The pin 1100 is located on the side of the fourth connection portion 1230 away from the first connection portion 1210. The first sub-cavity 5110 penetrates through one end of the pin 1100 facing the adapter 1200. The second sub-cavity 5120 penetrates through one end of the adapter 1200 facing the pin 1100. The first sub-cavity 5110 communicates with the second sub-cavity 5120.

[0159] Exemplarily, the adapter 1200 may be provided with a second interface 1240. The pin 1100 is inserted into the second interface 1240. The pin 1100 can be fixedly connected to the adapter 1200 by welding.

[0160] As Figure 12 shown, the power terminal 1000 further includes a diversion tube 1400. As Figure 3 shown, a limiting port 5700 is provided on the cavity wall of the second sub-cavity 5120 away from the first sub-cavity 5110. A connecting structure 5500 is provided on the adapter 1200. The connecting structure 5500 is located at one end of the limiting port 5700 away from the second sub-cavity 5120. The connecting structure 5500 communicates with the limiting port 5700. That is to say, both the first through-flow hole 5510 and the second through-flow hole 5520 are provided on the adapter 1200. Both the first through-flow hole 5510 and the second through-flow hole 5520 are located at one end of the limiting port 5700 away from the second sub-cavity 5120. Both the first through-flow hole 5510 and the second through-flow hole 5520 communicate with the limiting port 5700.

[0161] One end of the diversion tube 1400 is arranged in the limiting port 5700. The limiting port 5700 is used to limit the movement of the diversion tube 1400. One end of the diversion tube 1400 located in the limiting port 5700 communicates with the connecting structure 5500. That is to say, one end of the diversion tube 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 diversion tube 1400 is located in the first sub-cavity 5110 and communicates with the first sub-cavity 5110, so that the connecting structure 5500 communicates with the first sub-cavity 5110 through the diversion tube 1400.

[0162] In this way, through the diversion pipe 1400, the cooling medium can be guided into the pin 1100. The fluidity of the cooling medium in the pin 1100 is relatively good, which is conducive to the sufficient heat exchange between the relatively hot pin 1100 and the cooling medium, and the heat dissipation effect of the pin 1100 is better. In addition, by using the split pins 1100 and the adapter 1200 to form the liquid cooling cavity 5100 and arranging the diversion pipe 1400 to pass through the limiting port 5700, the arrangement of the diversion pipe 1400 is relatively convenient.

[0163] Exemplarily, the diversion pipe 1400 can be in interference fit with the adapter 1200 within the limiting port 5700.

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

[0165] Figure 13 It is a schematic cross-sectional view of a first compression sleeve provided by an embodiment of the present application. Figure 14 It is a schematic diagram of a sleeve provided by an embodiment of the present application. Figure 15 It is Figure 14 the schematic cross-sectional view of the sleeve provided in Figure 13 The cross-section in Figure 15 is the cross-section where the axis of the first compression sleeve 6100 is located, and the cross-section in

[0166] As Figures 13 - 15 shown, 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. The second inclined surface structure 6110 presses the pipe wall of the first liquid pipe 4100 against the first inclined surface structure 3221. The first inclined surface structure 3221 and the second inclined surface structure 6110 can convert the axial force along the first joint 3220 into a radial force along the first joint 3220, so as to facilitate the sealed connection between the first liquid pipe 4100 and the first joint 3220.

[0167] As Figure 14 、 Figure 15 shown, the outer wall of the first end 3100 has an outwardly protruding first locking portion 3120.

[0168] Figure 16 It is a schematic diagram of a second compression sleeve provided by an embodiment of the present application.

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

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

[0171] As Figure 17 shown, the second locking portion 6210 is crimped 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 presses the seal 6300, so as to realize the sealed connection between the first end 3100 and the connecting sub-portion 1212.

[0172] Exemplarily, the seal 6300 can be a sealing ring.

[0173] As Figure 15 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 there is a large sealing surface between the sealing ring and the first end 3100. In addition, the sealing groove 3110 can also play a role in positioning the sealing cavity, so that the sealing ring is not easily displaced.

[0174] Figure 18 For Figure 2 the exploded view at the power terminal of the charging gun provided in

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

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

[0177] Exemplarily, the temperature sensor 7000 can be adhesively fixed to the sleeve 3000 with heat-conducting glue.

[0178] Exemplarily, a heat-shrinkable tube is sleeved outside the sleeve 3000 and the temperature sensor 7000, and the temperature sensor 7000 can be crimped and fixed on the sleeve 3000 through the heat-shrinkable tube.

[0179] Exemplarily, the outer surface of the sleeve 3000 has a positioning groove 5300, the positioning groove 5300 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] Exemplarily, the outer surface of the sleeve 3000 has a plurality of positioning grooves 5300 arranged at circumferential intervals along the sleeve 3000, and the temperature sensor 7000 is disposed in one of the positioning grooves 5300 so that when the sleeve 3000 rotates to different positions, the temperature sensor 7000 can be set at a preset relative position to the power terminal 1000.

[0181] Exemplarily, the positioning grooves 5300 located on the outer surface of the sleeve 3000 are evenly distributed along the circumference of the sleeve 3000. That is to say, the interval between any one positioning groove 5300 and the positioning grooves 5300 adjacent to it on both sides in the circumferential direction of the sleeve 3000 is equal.

[0182] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, or an indirect connection through an intermediate medium, or the internal communication of 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.

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

[0184] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them; although the technical solutions 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 for 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 power terminal (1000) having a liquid cooling cavity (5100), the power terminal (1000) including a first connection portion (1210) and a second connection portion (1220), one end of the first connection portion (1210) being connected to one end of the second connection portion (1220), the liquid cooling cavity (5100) being located at an end of the first connection portion (1210) away from the second connection portion (1220), the first connection portion (1210) and the second connection portion (1220) having a first through-flow hole (5510), the first connection portion (1210) further having a second through-flow hole (5520), the first through-flow hole (5510) penetrating through the second connection portion (1220) and communicating with the liquid cooling cavity (5100), the second through-flow hole (5520) penetrating through the first connection portion (1210) and communicating with the liquid cooling cavity (5100); A sleeve (3000) including a first end (3100) and a second end (3200), the first end (3100) being connected to the first connection portion (1210), the second connection portion (1220) being sleeved within the sleeve (3000), a through-flow region (5400) being formed between an outer wall of the power terminal (1000) and an inner wall of the sleeve (3000), the first through-flow hole (5510) and the second through-flow hole (5520) both communicating with the through-flow region (5400); the liquid cooling cavity (5100) communicating with the through-flow region (5400) through the first through-flow hole (5510), the liquid cooling cavity (5100) further communicating with the through-flow region (5400) through the second through-flow hole (5520); A power line (4200) connected to the second connection portion (1220) within the through-flow region (5400).

2. The charging gun (100) according to claim 1, characterized in that, An end face of the first connection portion (1210) connecting one end of the second connection portion (1220) includes a first part (1211a) and a second part (1211b); The second connection portion (1220) is connected to the first part (1211a), a receiving space (5410) being formed between the second part (1211b) and an outer peripheral surface of the second connection portion (1220), at least a part of an end of the second through-flow hole (5520) away from the liquid cooling cavity (5100) being located in the second part (1211b), the end of the second through-flow hole (5520) away from the liquid cooling cavity (5100) communicating with the receiving space (5410); The power line (4200) is connected to the second connection portion (1220) within the receiving space (5410).

3. The charging gun (100) according to claim 2, characterized in that, The outer peripheral surface of the second connection portion (1220) includes a third part (1221), the third part (1221) being a plane; The receiving space (5410) is formed between the second part (1211b) and the third part (1221), the power line (4200) being connected to the third part (1221).

4. The charging gun (100) according to any one of claims 1-3, characterized in that, It further includes a first liquid pipe (4100); The first liquid pipe (4100) is sleeved outside the power line (4200). The first liquid pipe (4100) is connected to the second end (3200). A liquid cooling flow channel (5600) is provided inside the first liquid pipe (4100), and the liquid cooling flow channel (5600) communicates with the flow-through area (5400) through the second end (3200).

5. The charging gun (100) according to claim 4, characterized in that, The second end (3200) includes a third connecting portion (3210) and a first connector (3220). 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) communicates with the flow-through area (5400) through the first connector (3220); The charging gun (100) further includes a first pressing sleeve (6100). The first pressing sleeve (6100) is sleeved outside the first liquid pipe (4100) and the third connecting portion (3210). The first pressing sleeve (6100) is fixedly connected to the third connecting portion (3210), and the first pressing sleeve (6100) presses the first liquid pipe (4100) against the first connector (3220).

6. The charging gun (100) according to any one of claims 1-5, characterized in that, The first connecting portion (1210) includes 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). The outer peripheral surface of the positioning sub-portion (1211) is used to abut against the inner wall of the first end (3100). The first end (3100) is fixedly and sealingly connected to the connecting sub-portion (1212).

7. The charging gun (100) according to claim 6, wherein, The charging gun (100) further includes a second pressing sleeve (6200) and a sealing member (6300). The sealing member (6300) is provided between the first end (3100) and the connecting sub-portion (1212). The second pressing sleeve (6200) is sleeved outside the sleeve (3000) and the connecting sub-portion (1212). The second pressing sleeve (6200) is fixedly connected to the connecting sub-portion (1212). The second pressing sleeve (6200) presses against the sleeve (3000) and makes the first end (3100) and the connecting sub-portion (1212) press the sealing member (6300) tightly.

8. The charging gun (100) according to any one of claims 1-7, characterized in that, The power terminal (1000) includes a pin (1100), an adapter (1200), and a diversion pipe (1400). The pin (1100) is fixedly connected to the adapter (1200); The adapter (1200) includes the first connecting portion (1210) and the second connecting portion (1220). The pin (1100) is located on the side of the first connecting portion (1210) away from the second connecting portion (1220); The liquid cooling cavity (5100) includes a first sub-cavity (5110) located at the pin (1100) and a second sub-cavity (5120) located at the adapter (1200), and the first sub-cavity (5110) is in communication with the second sub-cavity (5120); A limiting port (5700) is provided on the cavity wall of the second sub-cavity (5120) away from the first sub-cavity (5110), and both the first through-flow hole (5510) and the second through-flow hole (5520) are located at one end of the limiting port (5700) away from the second sub-cavity (5120); One end of the diversion pipe (1400) is arranged in the limiting port (5700) and is in communication with the first through-flow hole (5510) and the second through-flow hole (5520), and the other end of the diversion 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 1-8, characterized in that, It further includes a temperature sensor (7000); 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 in that, It includes a charging pile (200) and a charging gun (100) as described in any one of claims 1-9; The charging gun (100) further includes a second liquid pipe (2000), and the second liquid pipe (2000) is in communication with the liquid cooling cavity (5100) of the charging gun (100); The charging pile (200) includes a power supply component (210) and a liquid supply component (220). The power terminal (1000) of the charging gun (100) is electrically connected to the power supply component (210) through the power line (4200) of the charging gun (100). One of the inlet and the outlet of the liquid supply component (220) is in communication with the second liquid pipe (2000), and the other of the inlet and the outlet of the liquid supply component (220) is in communication with the through-flow area (5400) of the charging gun (100).

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