Liquid cooling gun, liquid cooling connector, liquid cooling equipment and electric vehicle

Abstract

The utility model provides a liquid cooling gun, a liquid cooling connector, liquid cooling equipment and an electric vehicle, the liquid cooling gun is used for being connected with the electric vehicle, the liquid cooling gun comprises a shell, a liquid cooling plug and an electric plug, the shell comprises a bottom plate, the bottom plate comprises a plurality of jacks, and each of the liquid cooling plug and the electric plug penetrates through the bottom plate through different jacks. The liquid cooling plug comprises a liquid supply plug and a liquid return plug, the liquid supply plug is used for conveying the cooling liquid of the liquid cooling unit to the electric vehicle, and the liquid return plug is used for conveying the cooling liquid output by the electric vehicle to the liquid cooling unit; the electric plug comprises a connection confirmation plug, the connection confirmation plug is used for being connected with a connection confirmation socket of the electric vehicle, the connection confirmation plug is further used for being connected with a connection confirmation circuit, and the voltage of a detection point in the connection confirmation circuit is used for indicating the connection state of the liquid cooling gun and the electric vehicle. The bottom plate comprises a plurality of spaced containing cavities, and the liquid cooling plug and the electric plug are located in different containing cavities.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of charging, in particular to a liquid cooling gun, a liquid cooling connector, a liquid cooling device and an electric vehicle. BACKGROUND

[0002] With the development of new energy technology, electric vehicles are becoming more and more popular. At present, as users demand faster charging of electric vehicles, the charging power output by charging piles to DC sockets is increasing. With the increase of charging power, for example, in the case of super charging, the heat generated by the power battery is increasing. The heat dissipation effect of the thermal management system is limited, and the heat dissipation capacity of the thermal management system cannot meet the heat dissipation demand of the power battery during high-power charging. SUMMARY

[0003] The present application provides a liquid cooling gun, a liquid cooling connector, a liquid cooling device and an electric vehicle, which can meet the heat dissipation demand of the power battery during high-power charging.

[0004] In a first aspect, a liquid cooling gun is provided. The liquid cooling gun is used to connect with an electric vehicle. The liquid cooling gun includes a housing, a liquid cooling plug and an electric plug. The housing includes a bottom plate. The bottom plate includes a plurality of insertion holes. Each of the liquid cooling plug and the electric plug passes through the bottom plate through a different insertion hole. The liquid cooling plug includes a liquid supply plug and a liquid return plug. The liquid supply plug is used to deliver cooling liquid of a liquid cooling unit to the electric vehicle. The liquid return plug is used to deliver cooling liquid output by the electric vehicle to the liquid cooling unit. The electric plug includes a connection confirmation plug. The connection confirmation plug is used to connect with a connection confirmation socket of the electric vehicle. The connection confirmation plug is also used to connect with a connection confirmation circuit. The voltage of a detection point in the connection confirmation circuit is used to indicate the connection state of the liquid cooling gun and the electric vehicle. The bottom plate includes a plurality of spaced accommodating cavities. The liquid cooling plug and the electric plug are located in different accommodating cavities.

[0005] In the present application, when the electric vehicle is charged at high power, the liquid cooling gun can deliver cooling liquid to the electric vehicle, thereby assisting the thermal management system on the vehicle to dissipate heat from the power battery of the vehicle. In this way, the liquid cooling device under the vehicle is used to improve the heat dissipation capacity of the battery management system on the vehicle for the power battery, thereby meeting the heat dissipation demand of the power battery during high-power charging.

[0006] In addition, the liquid cooling plug and the electric plug are located in different accommodating cavities, which can prevent the cooling liquid flowing through the liquid cooling plug from flowing into the electric plug, thereby avoiding the charging accident that may be caused by the cooling liquid flowing into the electric plug, and improving the safety and user experience of charging the electric vehicle.

[0007] In combination with the first aspect, in a possible design, the projection of the liquid cooling plug and the projection of the electric plug do not overlap in the direction of gravity.

[0008] In the embodiment of the application, the projection of the liquid cooling plug along the gravity direction and the projection of the electric plug do not coincide. Even if the connection between the liquid cooling plug and the liquid cooling socket is loose and a small amount of cooling liquid drips downward along the gravity direction, the cooling liquid will not flow into the electric plug, so that the charging abnormality caused by the cooling liquid flowing into the electric plug can be avoided, the normal charging of the electric vehicle is ensured, and even the charging accident caused by the cooling liquid flowing into the electric plug can be avoided, and the safety of the electric vehicle charging is improved.

[0009] In addition, in this way, when the liquid cooling gun is pulled out of the liquid cooling connector, even if the liquid cooling plug of the liquid cooling gun drips a small amount of cooling liquid, the small amount of cooling liquid will not flow into the electric plug, so that the personal injury of the user caused by accidentally touching the electric plug can be prevented, the safety of the user is ensured, and the charging accident caused by the cooling liquid in the electric plug when the liquid cooling gun is plugged into the liquid cooling connector again can be prevented, so that the safety of the electric vehicle charging is improved.

[0010] In combination with the first aspect, in a possible design, the distance between one end of the liquid cooling plug and the bottom plate is greater than the distance between one end of the connection confirmation plug and the bottom plate, or the distance between one end of the liquid cooling plug and the end face of the accommodating cavity away from the bottom plate is less than the distance between one end of the connection confirmation plug and the end face of the accommodating cavity away from the bottom plate. The one end of the liquid cooling plug and the one end of the connection confirmation plug are both exposed to the shell.

[0011] Based on the above scheme, when the liquid cooling gun is plugged into the liquid cooling connector, the liquid cooling plug is connected with the liquid cooling socket first, and then the connection confirmation plug is connected with the connection confirmation socket, so that the misjudgment of the liquid cooling device on the connection state of the liquid cooling plug and the liquid cooling socket can be prevented, the leakage of the cooling liquid can be avoided, and when the charging pile charges the electric vehicle at a high power, the liquid cooling device outside the vehicle can normally cool the power battery of the electric vehicle, and the heat dissipation demand of the power battery for high-power charging is met.

[0012] In combination with the first aspect, in a possible design, the connection confirmation plug includes a first connection confirmation plug and a second connection confirmation plug. The distance between one end of the first connection confirmation plug and the bottom plate is less than the distance between one end of the second connection confirmation plug and the bottom plate, or the distance between one end of the first connection confirmation plug and the end face of the accommodating cavity away from the bottom plate is greater than the distance between one end of the second connection confirmation plug and the end face of the accommodating cavity away from the bottom plate.

[0013] Based on the above scheme, in the process of plugging the liquid cooling connector by the liquid cooling gun, the second connection confirmation socket is connected with the second connection confirmation plug first, and the first connection confirmation socket is connected with the first connection confirmation plug later. That is, the liquid cooling device performs the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug. The delay of starting charging caused by the electric vehicle performing the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug can be avoided. Therefore, the time length of starting charging can be reduced, and the efficiency of starting charging can be improved.

[0014] In combination with the first aspect, in a possible design, the electric plug further includes a communication plug configured to connect with a communication socket of the electric vehicle. A distance between one end of the communication plug and the bottom plate is greater than a distance between one end of the first connection confirmation plug and the bottom plate, and less than a distance between one end of the second connection confirmation plug and the bottom plate. Alternatively, a distance between one end of the communication plug and an end surface of the accommodating cavity away from the bottom plate is less than a distance between one end of the first connection confirmation plug and the end surface of the accommodating cavity away from the bottom plate, and greater than a distance between one end of the second connection confirmation plug and the end surface of the accommodating cavity away from the bottom plate. The one end of the communication plug is exposed outside the shell.

[0015] Based on the above scheme, in the process of plugging the liquid cooling connector by the liquid cooling gun, the second connection confirmation socket is connected with the second connection confirmation plug first, and the first connection confirmation socket is connected with the first connection confirmation plug later. That is, the liquid cooling device performs the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug. The delay of starting charging caused by the electric vehicle performing the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug can be avoided. Therefore, the time length of starting charging can be reduced, and the efficiency of starting charging can be improved.

[0016] In addition, in the embodiment of the present application, the communication plug and the connection confirmation plug are arranged in the same accommodating cavity, which can reduce the number of accommodating cavities, thereby simplifying the design and reducing the processing complexity.

[0017] With reference to the first aspect, in a possible design, the electric plug further includes a grounding plug configured to connect to a grounding socket of the electric vehicle. A distance between one end of the grounding plug and the bottom plate is smaller than the distance between one end of the liquid cooling plug and the bottom plate, and is larger than a distance between one end of the connection confirmation plug and the bottom plate. Alternatively, a distance between one end of the grounding plug and an end surface of the accommodating cavity away from the bottom plate is larger than a distance between one end of the liquid cooling plug and the end surface of the accommodating cavity away from the bottom plate, and is smaller than a distance between one end of the connection confirmation plug and the end surface of the accommodating cavity away from the bottom plate. The one end of the grounding plug is exposed to the shell.

[0018] According to the above scheme, in the process of connecting the liquid cooling connector by the liquid cooling gun, the connection between the grounding plug and the grounding socket lags behind the connection between the liquid cooling plug and the liquid cooling socket, and the connection between the grounding plug and the grounding socket is prior to the connection between the connection confirmation plug and the connection confirmation socket. This design is conducive to the accurate judgment of the connection state of the liquid cooling plug and the liquid cooling socket by the liquid cooling device according to the connection confirmation plug and the connection confirmation socket, and can improve the correctness of the judgment of the connection state of the liquid cooling plug and the liquid cooling socket by the liquid cooling device, thereby ensuring the normal operation of the electric vehicle for high-power charging.

[0019] With reference to the first aspect, in a possible design, the bottom plate further includes a guide column, the guide column and the accommodating cavity are located on the same side of the bottom plate, and the guide column is configured to be inserted into a guide hole of the electric vehicle. A distance between one end of the guide column away from the bottom plate and the bottom plate is larger than the distance between one end of the liquid cooling plug and the bottom plate, and the one end of the liquid cooling plug is exposed to the shell.

[0020] According to the above scheme, the connection between the guide column of the liquid cooling gun and the guide hole of the electric vehicle is prior to the connection between the liquid cooling plug and the liquid cooling socket, in other words, compared with other plugs of the liquid cooling gun, the guide column of the liquid cooling gun is connected to the guide hole of the liquid cooling connector first. In this way, the position of the liquid cooling gun and the position of the liquid cooling connector basically correspond, which is conducive to the accurate insertion of the liquid cooling gun and the liquid cooling connector by the user.

[0021] With reference to the first aspect, in a possible design, the bottom plate further includes a guide slot or a guide hole, and the guide slot or the guide hole is configured to accommodate a guide column of the electric vehicle.

[0022] According to the above scheme, the guide slot or the guide hole of the liquid cooling gun is inserted into the guide column of the electric vehicle. The connection between the guide slot or the guide hole of the liquid cooling gun and the guide column of the electric vehicle is prior to the connection between the liquid cooling plug and the liquid cooling socket, which is conducive to the accurate insertion of the liquid cooling gun and the liquid cooling connector by the user.

[0023] With reference to the first aspect, in a possible design, the bottom plate further includes a first protruding structure, and the first protruding structure and the accommodating cavity are located on the same side of the bottom plate. The first protruding structure includes two ends arranged opposite to each other, one of the two ends of the first protruding structure is in abutment with the bottom plate, and the first protruding structure further includes a through hole penetrating through the first protruding structure along the arrangement direction of the two ends of the first protruding structure, and a side wall of the through hole and a portion of the bottom plate corresponding to the first protruding structure jointly enclose a guide groove.

[0024] Based on the above scheme, the side wall of the through hole and the portion of the bottom plate corresponding to the first protruding structure jointly enclose the guide groove, so that the thickness requirement of the bottom plate of the liquid cooling gun is lower, that is, the bottom plate of the liquid cooling gun can be designed as a thinner plate, the weight of the liquid cooling gun can be reduced, the user can conveniently insert the liquid cooling gun into the liquid cooling connector, and the user experience is improved.

[0025] With reference to the first aspect, in a possible design, the liquid cooling gun further includes a power-assisted handle structure, the power-assisted handle structure is arranged around part of the outer peripheral surface of the shell, and two ends of the power-assisted handle structure are rotationally connected with the shell. Each of the two ends of the power-assisted handle structure is provided with a guide rail structure with one end open, each guide rail structure penetrates the end portion of one of the two ends along the arrangement direction of the two ends of the power-assisted handle structure, and the opening of each guide rail structure faces away from the direction of the liquid cooling gun line of the liquid cooling gun.

[0026] Based on the above scheme, the user can hold the power-assisted handle structure to rotate counterclockwise or instantaneously, so that the power-assisted handle structure rotates around the shell. During the rotation of the power-assisted handle structure around the shell, the liquid cooling gun moves towards the liquid cooling connector, so that the liquid cooling gun and the liquid cooling connector can be more conveniently plugged, the user can save the effort of inserting the liquid cooling gun into the liquid cooling connector, and the user experience is improved.

[0027] With reference to the first aspect, in a possible design, the liquid cooling gun further includes a hooking member, the hooking member is arranged parallel to the power-assisted handle structure along the arrangement direction of the two ends of the power-assisted handle structure, and the hooking member is rotationally connected with the power-assisted handle structure. The hooking member includes a bent portion, and the bent portion is bent towards the arrangement direction of the two track surfaces of the guide rail structure.

[0028] Based on the above scheme, during the plugging of the liquid cooling gun into the liquid cooling connector, the bent portion of the hooking member can hook the fifth protruding structure of the liquid cooling connector, so that the relative position of the liquid cooling gun and the liquid cooling connector can be prevented from moving, thereby ensuring the smooth delivery of the cooling liquid, and further ensuring the normal operation of the high-power charging of the electric vehicle.

[0029] With reference to the first aspect, in a possible design, one of the two ends of the power-assisted handle structure away from the end surface of the shell includes a second protruding structure, and the second protruding structure includes a through hole penetrating through the second protruding structure along a direction perpendicular to the protruding direction of the second protruding structure.

[0030] Based on the above scheme, in the process of plugging the liquid-cooled connector of the liquid-cooled gun, when the relative positions of the liquid-cooled gun and the liquid-cooled connector are fixed, the through hole of the second protruding structure can pass through the columnar structure of the liquid-cooled gun to lock the connection between the liquid-cooled gun and the liquid-cooled connector, so that the charging abnormality caused by the liquid-cooled gun being mistakenly unplugged during charging can be prevented, and the normal charging of the electric vehicle can be ensured.

[0031] In a second aspect, a liquid-cooled connector is provided for connecting with a liquid-cooled gun. The liquid-cooled connector includes a housing, a liquid-cooled socket, and an electrical socket. The housing includes a bottom plate including a plurality of insertion holes. The liquid-cooled socket and the electrical socket pass through the bottom plate through different insertion holes. The liquid-cooled socket includes an inlet socket and an outlet socket. The inlet socket is configured to deliver cooling liquid output by the liquid-cooled gun to a component of the electric vehicle to be cooled. The outlet socket is configured to deliver the cooling liquid that has passed through the component to be cooled to the liquid-cooled gun. The electrical socket includes a connection confirmation socket configured to connect with a connection confirmation plug of the liquid-cooled gun. The connection confirmation socket is further configured to connect with a connection confirmation circuit. A voltage of a detection point in the connection confirmation circuit is configured to indicate a connection state of the electric vehicle and the liquid-cooled gun. The bottom plate includes a plurality of spaced-apart accommodation cavities. The liquid-cooled socket and the electrical socket are located in different accommodation cavities.

[0032] In the embodiments of the present application, when the electric vehicle is charged at a high power, the liquid-cooled connector can deliver cooling liquid to the electric vehicle, thereby assisting the thermal management system on the vehicle in dissipating heat from the power battery of the vehicle. In this way, the heat dissipation capability of the battery management system on the vehicle for the power battery is improved by using the liquid-cooled equipment under the vehicle, and the heat dissipation requirement of the power battery for high-power charging is met.

[0033] In addition, the liquid-cooled socket and the electrical socket are designed to be located in different accommodation cavities, so that the cooling liquid flowing through the liquid-cooled socket can be prevented from flowing into the electrical socket, thereby avoiding charging accidents that can be caused by the cooling liquid flowing into the electrical socket, and improving the safety and user experience of charging the electric vehicle.

[0034] In combination with the second aspect, in a possible design, a projection of the liquid-cooled socket and a projection of the electrical socket do not overlap in a gravity direction.

[0035] In the embodiments of the present application, the projection of the liquid-cooled socket and the projection of the electrical socket do not overlap in the gravity direction. Even if some looseness occurs between the liquid-cooled socket and the liquid-cooled plug, causing a small amount of cooling liquid to drip downward in the gravity direction, the cooling liquid will not flow into the electrical socket, thereby avoiding charging abnormalities that can be caused by the cooling liquid flowing into the electrical socket, ensuring the normal charging of the electric vehicle, and even avoiding charging accidents that can be caused by the cooling liquid flowing into the electrical socket, thereby improving the safety of charging the electric vehicle.

[0036] In addition, the liquid cooling connector is designed in this way, when the liquid cooling gun is pulled out from the liquid cooling connector, even if the liquid cooling socket of the liquid cooling connector drips a small amount of cooling liquid, the small amount of cooling liquid will not flow into the electric socket, so as to prevent personal injury to the user when the user accidentally touches the electric socket, so as to ensure the safety of the user; and, it can also prevent the electric socket from being filled with cooling liquid when the liquid cooling connector is plugged again, so as to prevent the charging accident, thereby improving the safety of the electric vehicle charging.

[0037] With reference to the second aspect, in a possible design, a distance between one end of the liquid cooling socket and the bottom plate is greater than a distance between one end of the connection confirmation socket and the bottom plate; or, a distance between one end of the liquid cooling socket and an end face of the accommodating cavity away from the bottom plate is less than a distance between one end of the connection confirmation socket and the end face of the accommodating cavity away from the bottom plate. Wherein, one end of the liquid cooling socket and one end of the connection confirmation socket are exposed to the shell.

[0038] The distance between one end of the liquid cooling socket and the bottom plate is greater than the distance between one end of the connection confirmation socket and the bottom plate; or, the distance between one end of the liquid cooling socket and the end face of the accommodating cavity away from the bottom plate is less than the distance between one end of the connection confirmation socket and the end face of the accommodating cavity away from the bottom plate, so that when the liquid cooling connector is plugged with the liquid cooling gun, the liquid cooling socket is connected with the liquid cooling plug first, and then the connection confirmation socket is connected with the connection confirmation plug, which can prevent the electric vehicle from misjudging the connection state of the liquid cooling plug and the liquid cooling socket, thereby avoiding the leakage of the cooling liquid, which is conducive to realizing that the liquid cooling equipment outside the vehicle normally cools the power battery of the electric vehicle when the charging pile charges the electric vehicle at a high power, and meets the heat dissipation demand of the power battery charging at a high power.

[0039] With reference to the second aspect, in a possible design, the connection confirmation socket includes a first connection confirmation socket and a second connection confirmation socket. A distance between one end of the first connection confirmation socket and the bottom plate is less than a distance between one end of the second connection confirmation socket and the bottom plate; or, a distance between one end of the first connection confirmation socket and an end face of the accommodating cavity away from the bottom plate is greater than a distance between one end of the second connection confirmation socket and the end face of the accommodating cavity away from the bottom plate.

[0040] The distance between one end of the first connection confirmation socket and the bottom plate is less than the distance between one end of the second connection confirmation socket and the bottom plate, or the distance between one end of the first connection confirmation socket and the end face of the accommodating cavity away from the bottom plate is greater than the distance between one end of the second connection confirmation socket and the end face of the accommodating cavity away from the bottom plate. In the process of plugging the liquid cooling connector by the liquid cooling gun, the second connection confirmation socket is connected first, and the first connection confirmation socket is connected last, which is equivalent to the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug by the liquid cooling device. The delay of starting charging caused by the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug by the electric vehicle can be avoided, thereby the time length of starting charging can be reduced, and the efficiency of starting charging can be improved.

[0041] In combination with the second aspect, in a possible design, the electric socket further includes a communication socket for connecting a communication plug of the liquid cooling gun. The distance between one end of the communication socket and the bottom plate is equal to the distance between one end of the first connection confirmation socket and the bottom plate, or the distance between one end of the communication socket and the end face of the accommodating cavity away from the bottom plate is equal to the distance between one end of the first connection confirmation socket and the end face of the accommodating cavity away from the bottom plate. The one end of the communication socket is exposed outside the shell.

[0042] Based on the above scheme, in the process of plugging the liquid cooling connector by the liquid cooling gun, the second connection confirmation socket is connected first, the communication plug is connected with the communication socket, and the first connection confirmation socket is connected last. After the electric vehicle performs the connection confirmation of the liquid cooling plug and the liquid cooling socket, the electric vehicle and the liquid cooling device can transmit messages to each other in the case that the communication plug and the communication socket are connected. When the liquid cooling device completes the connection confirmation of the liquid cooling plug and the liquid cooling socket, the liquid cooling device can deliver cooling liquid to the electric vehicle to prepare for the charging stage, which can avoid the time delay of message transmission caused by the connection of the communication plug and the communication socket after the connection of the connection confirmation socket and the connection confirmation plug, and is beneficial to further reducing the time length of starting charging, thereby improving the efficiency of starting charging.

[0043] Moreover, the distance between one end of the communication socket and the bottom plate is equal to the distance between one end of the first connection confirmation socket and the bottom plate, which can reduce the size of the liquid cooling connector, is beneficial to the integration of the liquid cooling connector, and facilitates the installation of the liquid cooling connector on the electric vehicle.

[0044] In addition, the communication socket and the connection confirmation socket are arranged in the same accommodating cavity, which can reduce the number of accommodating cavities, thereby simplifying the design and reducing the processing complexity.

[0045] With reference to the second aspect, in a possible design, the electrical socket further includes a grounding socket configured to connect a grounding plug of the liquid cooling gun. A distance between one end of the grounding socket and the bottom plate is less than the distance between one end of the liquid cooling socket and the bottom plate, and greater than the distance between one end of the connection confirmation socket and the bottom plate. Alternatively, a distance between the one end of the grounding socket and an end surface of the accommodating cavity away from the bottom plate is greater than the distance between one end of the liquid cooling socket and the end surface of the accommodating cavity away from the bottom plate, and less than the distance between one end of the connection confirmation socket and the end surface of the accommodating cavity away from the bottom plate. The one end of the grounding socket is exposed outside the shell.

[0046] Based on the above scheme, during the process of plugging the liquid cooling connector by the liquid cooling gun, the connection between the grounding plug and the grounding socket lags behind the connection between the liquid cooling plug and the liquid cooling socket, and the connection between the grounding plug and the grounding socket is prior to the connection between the connection confirmation plug and the connection confirmation socket. This design is conducive to the accurate judgment of the connection state of the liquid cooling plug and the liquid cooling socket by the electric vehicle based on the connection confirmation plug and the connection confirmation socket, and can improve the correctness of the electric vehicle in judging the connection state of the liquid cooling plug and the liquid cooling socket, thereby ensuring the normal operation of the electric vehicle in high-power charging.

[0047] With reference to the second aspect, in a possible design, the liquid cooling connector further includes a guide column, the guide column and the accommodating cavity are located on the same side of the bottom plate, and the guide column is configured to plug into a guide hole of the liquid cooling gun. A distance between one end of the guide column away from the bottom plate and the bottom plate is greater than the distance between one end of the liquid cooling socket and the bottom plate, and the one end of the liquid cooling socket is exposed outside the shell.

[0048] Based on the above scheme, the connection between the guide column of the liquid cooling connector and the guide hole of the liquid cooling gun is prior to the connection between the liquid cooling plug and the liquid cooling socket, in other words, compared with other sockets of the liquid cooling connector, the guide column of the liquid cooling connector is connected to the guide hole of the liquid cooling gun first. In this way, the positions of the liquid cooling connector and the liquid cooling gun substantially correspond, which is conducive to the accurate plugging of the liquid cooling gun and the liquid cooling connector by the user.

[0049] With reference to the second aspect, in a possible design, the bottom plate further includes a guide slot or a guide hole, and the guide slot or the guide hole is configured to accommodate the guide column of the liquid cooling gun.

[0050] Based on the above scheme, the guide slot or the guide hole of the liquid cooling connector is plugged into the guide column of the liquid cooling gun, and the connection between the guide slot or the guide hole of the liquid cooling connector and the guide column of the liquid cooling gun is prior to the connection between the liquid cooling plug and the liquid cooling socket, which is conducive to the accurate plugging of the liquid cooling gun and the liquid cooling connector by the user.

[0051] With reference to the second aspect, in a possible design, the bottom plate further includes a third protruding structure, and the third protruding structure and the accommodating cavity are located on the same side of the bottom plate. The third protruding structure includes two ends arranged oppositely, one of the two ends of the third protruding structure is in abutment with the bottom plate, and the third protruding structure further includes a through hole penetrating through the third protruding structure along a direction in which the two ends of the third protruding structure are arranged, and a side wall of the through hole and a portion of the bottom plate corresponding to the third protruding structure jointly enclose a guide groove.

[0052] Based on the above scheme, the side wall of the through hole and the portion of the bottom plate corresponding to the third protruding structure jointly enclose the guide groove, so that the thickness requirement of the bottom plate of the liquid cooling connector is lower, that is, the bottom plate of the liquid cooling connector can be designed as a thinner plate, so as to reduce the size of the liquid cooling connector, facilitate the integration of the liquid cooling connector, and facilitate the installation of the liquid cooling connector on the electric vehicle.

[0053] With reference to the second aspect, in a possible design, the liquid cooling connector further includes a fourth protruding structure, and the fourth protruding structure is arranged around the accommodating cavity. The fourth protruding structure includes two side walls arranged oppositely in a direction perpendicular to the direction of gravity, and the two side walls respectively include a fifth protruding structure, and each fifth protruding structure is protrudingly arranged on the corresponding side wall in the direction perpendicular to the direction of gravity.

[0054] Based on the above scheme, in the process of plugging the liquid cooling connector into the liquid cooling gun, the two fifth protruding structures of the liquid cooling connector respectively slide along the corresponding guide rail structures of the liquid cooling gun, and when the plug of the liquid cooling gun is connected to the corresponding socket of the liquid cooling connector, the two fifth protruding structures respectively reach the bottoms of the guide rail structures, which is beneficial to save the user's strength for plugging the liquid cooling gun into the liquid cooling connector and improve the user experience.

[0055] With reference to the second aspect, in a possible design, the liquid cooling connector further includes a column structure, and the column structure is located on a side of the bottom plate away from the fourth protruding structure. The bottom plate further includes a through hole, and a projection of the column structure and the through hole overlap in a direction in which the through hole extends. The column structure is further connected with a driving member, and the driving member is configured to drive the column structure to move in the direction in which the through hole extends, so that the column structure penetrates through the through hole.

[0056] Based on the above scheme, in the process of plugging the liquid cooling connector into the liquid cooling gun, when the relative positions of the liquid cooling connector and the liquid cooling gun are fixed, the driving member can drive the column structure to move in the direction in which the through hole extends, so that the column structure penetrates through the through hole of the liquid cooling gun, thereby locking the connection between the liquid cooling gun and the liquid cooling connector, so that the abnormal charging caused by the liquid cooling gun being mistakenly unplugged during charging can be prevented, and the normal charging of the electric vehicle can be ensured.

[0057] Thirdly, a liquid cooling device is provided, comprising a liquid cooling unit and a liquid cooling gun in the first aspect or any possible design of the first aspect, wherein the liquid cooling unit includes coolant and the liquid cooling gun is used to deliver the coolant of the liquid cooling unit to an electric vehicle.

[0058] In the embodiments of this application, the beneficial effects of the third aspect can be referred to the relevant description of the beneficial effects in the first aspect or any possible design of the first aspect, and will not be repeated here.

[0059] Fourthly, an electric vehicle is provided, the electric vehicle including a power battery and a liquid-cooled connector in a second aspect or any possible design of the second aspect, the liquid-cooled connector being used to deliver coolant from a liquid-cooling device to the power battery.

[0060] In the embodiments of this application, the beneficial effects of the fourth aspect can be referred to the relevant description of the beneficial effects in the second aspect or any possible design of the second aspect, and will not be repeated here. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the charging system provided in an embodiment of this application.

[0062] Figure 2 for Figure 1 The diagram shows the structure of the charging system.

[0063] Figures 3-4 A schematic diagram of the liquid cooling connection device provided in this application.

[0064] Figure 5 This is a schematic diagram of the interface of the liquid cooling gun provided in an embodiment of this application.

[0065] Figure 6 This is a schematic diagram of the interface of the liquid-cooled connector provided in an embodiment of this application.

[0066] Figure 7 This is a schematic diagram of the interface of a liquid cooling gun provided for another embodiment of this application.

[0067] Figure 8 This is a schematic diagram of the interface of a liquid-cooled connector provided in another embodiment of this application.

[0068] Figure 9 This is a schematic diagram of the interface of a liquid cooling gun provided in another embodiment of this application.

[0069] Figure 10 This is a schematic diagram of the interface of a liquid-cooled connector provided in another embodiment of this application.

[0070] Figure 11 This is a schematic diagram of the interface of a liquid cooling gun provided in another embodiment of this application.

[0071] Figure 12 An interface diagram of a liquid cooling connector according to another embodiment of the present application.

[0072] Figure 13 Another diagram of a liquid cooling connection device according to the present application.

[0073] Figure 14 An interface diagram of a liquid cooling gun and a liquid cooling connector according to an embodiment of the present application.

[0074] Figure 15 An interface diagram of a liquid cooling gun according to another embodiment of the present application.

[0075] Figure 16 An interface diagram of a liquid cooling connector according to another embodiment of the present application.

[0076] Figure 17 An interface diagram of a liquid cooling connector according to another embodiment of the present application.

[0077] Figure 18 An interface diagram of a liquid cooling connector according to another embodiment of the present application.

[0078] Figure 19 An interface diagram of a liquid cooling gun according to another embodiment of the present application.

[0079] Figure 20 An interface diagram of a liquid cooling gun according to another embodiment of the present application.

[0080] Figure 21 A diagram of a liquid cooling connection device according to another embodiment of the present application.

[0081] Figure 22 A diagram of a liquid cooling gun according to another embodiment of the present application.

[0082] Figure 23 A diagram of a liquid cooling connection device according to another embodiment of the present application.

[0083] Figure 24 An interface diagram of a liquid cooling gun according to another embodiment of the present application.

[0084] Figure 25 An interface diagram of a liquid cooling connector according to another embodiment of the present application. DETAILED DESCRIPTION

[0085] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0086] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0087] The prefixes such as "first" and "second" used in this application embodiment are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this application embodiment does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not constitute unnecessary restrictions due to the use of such prefixes. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0088] With the development of new energy vehicle technology, many car manufacturers have gradually launched electric vehicles. Electric vehicles have become the choice of many users due to their energy saving, environmental protection and relatively mature technology.

[0089] This application can be applied to systems where power supply devices and loads charge each other through a power distribution matrix. In particular, it is applicable to systems including charging stations and electric vehicles, where charging stations can use electricity from the grid to charge electric vehicles, and electric vehicles can also output their own electrical energy back to the grid.

[0090] Figure 1 An exemplary schematic diagram of the structure of the charging system 10 provided in an embodiment of this application is shown.

[0091] Combination Figure 1 (a) and Figure 1 In (b) of the above, the charging system 10 may include a charging pile 11 and an electric vehicle 12. The charging pile 11 can receive AC power output from the external power grid 20 and convert it into stable DC power before supplying it to the electric vehicle 12 to charge the electric vehicle 12. Alternatively, the electric vehicle 12 can also output electrical energy back to the external power grid 20.

[0092] In some embodiments, such as Figure 1As shown in (a) of FIG. 1, the charging pile 11 is a split charging pile. Specifically, the charging pile 11 can include a charging host 111, at least one charging terminal 112, and at least one charging gun 113. The charging host 111 includes a plurality of charging modules (not shown in the figure), the outputs of the plurality of charging modules are connected to the at least one charging terminal 112, the at least one charging terminal 112 is connected to the at least one charging gun 113, and each charging gun 113 is used to connect an electric vehicle 12. Exemplarily, one charging terminal 112 can be connected to one or more charging guns 113, and the one or more charging guns 113 can be connected to the same electric vehicle 12.

[0093] The charging module can include, for example, a plurality of power conversion devices that can convert alternating current from the external power grid 20 into stable direct current and then deliver the stable direct current to the charging terminal 112. The plurality of power conversion devices can include, for example, alternating current-direct current (AC-DC) conversion devices and direct current-direct current (DC-DC) conversion devices. The charging terminal 112 delivers the stable direct current to the electric vehicle 12 through the charging gun 113 to charge the electric vehicle 12.

[0094] The charging terminal 112 can include a housing, a human-computer interaction interface, a charging control unit, a metering and charging unit, and the like, and is used for information interaction, energy transmission, metering and charging, and the like with the electric vehicle 12.

[0095] The electric vehicle 12 can be a kind of traffic tool driven by electric energy. The electric vehicle 12 can be a pure electric vehicle (pure EV / battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), or a plug-in hybrid electric vehicle (PHEV), and the like.

[0096] In other embodiments, as shown in (b) of FIG. 1, the charging pile 11 is a monolithic charging pile. Specifically, the charging pile 11 can include a charging host 111 and at least one charging terminal 112. The charging host 111 includes a plurality of charging modules (not shown in the figure), and the outputs of the plurality of charging modules are connected to the at least one charging terminal 112. The at least one charging terminal 112 is used to connect an electric vehicle 12. Figure 1As shown in (b) in FIG. 1, the charging pile 11 is an integrated charging pile. Specifically, the charging pile 11 can directly set the human-computer interaction interface, the charging control unit, the metering and charging unit and the like in the charging host 111, so that the charging pile 11 can only include the charging host 111 and at least one charging gun 113 electrically connected with the charging host 111, and does not include the charging terminal 112. The multiple power conversion devices in the charging host 111 can convert alternating current from the external power grid 20 into stable direct current, and then directly deliver the direct current to the electric vehicle 12 through the charging gun 113.

[0097] Figure 2 As shown in FIG. 1, the charging system 10 includes the external power grid 20, the charging pile 11 and the electric vehicle 12. Figure 1 As shown in FIG. 1, the charging system 10 includes the external power grid 20, the charging pile 11 and the electric vehicle 12.

[0098] The input end of the multiple AC-DC conversion devices 1111 can be connected with the external power grid 20, and the output end of the multiple AC-DC conversion devices 1111 can be connected with the direct current bus 1113. That is to say, the multiple AC-DC conversion devices 1111 can be connected in parallel between the external power grid 20 and the direct current bus 1113. Among them, the multiple AC-DC conversion devices 1111 can be used to receive alternating current from the external power grid 20, and convert the alternating current into direct current, and then output the direct current through the direct current bus 1113.

[0099] The input end of the DC-DC conversion device 1112 can be connected with the direct current bus 1113, and the output end of the DC-DC conversion device 1112 can be connected with the charging terminal 112 through the power distribution device 1114. The DC-DC conversion device 1112 can receive the direct current output by the multiple AC-DC conversion devices 1111 through the direct current bus 1113, and further convert the direct current into direct current suitable for the electric vehicle 12, and then transmit the direct current to the power distribution device 1114. The power distribution device 1114 can dynamically distribute the direct current output by the multiple DC-DC conversion devices 1112 according to the actual charging power required by the electric vehicle, and the distributed charging power is transmitted to the electric vehicle 12 through the charging terminal 112 for charging the electric vehicle 12.

[0100] With the development of new energy technology, electric vehicles are becoming more and more popular. At present, with the increasing demand of users for the charging time of electric vehicles, the charging power output by the charging pile to the direct current socket is becoming larger and larger. With the increase of charging power, for example, in the super charging scene, the heat generation of the power battery is becoming larger and larger, and the heat dissipation effect of the heat management system is limited, and the heat dissipation capacity of the heat management system cannot meet the heat dissipation demand of the power battery in high-power charging.

[0101] Based on this, the application provides a liquid cooling gun 310 and a liquid cooling connector 320, as shown in the figure Figure 3 The liquid cooling gun 310 and the liquid cooling connector 320 can be collectively referred to as a liquid cooling connection device.

[0102] The liquid cooling gun 310 includes a housing 311, a liquid supply plug 312a (which can also be referred to as a fluid connector female / male plug), a first fluid supply connector 3121, a liquid supply pipeline 3123, a second fluid supply connector 3125, a liquid return plug 312b (which can also be referred to as a fluid connector female / male plug), a first fluid return connector 3122, a liquid return pipeline 3124, a second fluid return connector 3126, an electrical plug 313 (which can also be referred to as a signal connector female / male plug), a signal cable 3131, a signal connector 3132, a guide structure 314 (which can also be referred to as a guide column, a guide slot, or a guide hole in the following), a power-assisted handle structure 315, and a dust cover 318.

[0103] The liquid cooling connector 320 includes a housing 321, a liquid inlet socket 322a (which can also be referred to as a fluid connector male / female socket), a fluid inlet connector 3221, a liquid inlet pipeline 3223, a liquid outlet socket 322b (which can also be referred to as a fluid connector male / female socket), a fluid outlet connector 3222, a liquid outlet pipeline 3224, an electrical socket 323 (which can also be referred to as a signal connector male / female socket), a signal cable 3231, a guide structure 324 (which can also be referred to as a guide column, a guide slot, or a guide hole in the following), and a dust cover 328.

[0104] In the embodiments of the application, the liquid cooling gun 310 is used to connect with the liquid cooling connector 320 arranged on an electric vehicle, and can be connected with the liquid cooling connector 320 in a plug-in direction, as shown in the figure Figure 4 As shown in the figure, taking the coordinate direction in the figure as a reference, the direction indicated by the x-axis represents the plug-in direction, the direction indicated by the y-axis represents the first direction, and the direction indicated by the z-axis represents the second direction; the second direction can be perpendicular to the first direction, and the plug-in direction can be perpendicular to the first direction and the second direction. The x-direction described above is the plug-in direction of the liquid cooling gun 310 and the liquid cooling connector 320, which is referred to as the plug-in direction for short, and the second direction and the third direction are respectively perpendicular to the plug-in direction. In actual application, the plug-in direction can be a horizontal direction, or the plug-in direction can be a direction that is inclined upward at a certain angle with respect to the horizontal direction.

[0105] The liquid cooling gun 310 may include a housing 311, and the liquid cooling connector 320 may include a housing 321. When the liquid cooling gun 310 and the liquid cooling connector 320 are connected, one end of each plug of the liquid cooling gun 310 protruding from the housing 311 can be plugged into one end of the corresponding socket of the liquid cooling connector 320 protruding from the housing 321. The other end of each plug of the liquid cooling gun 310 can be connected to a liquid cooling unit outside the vehicle, and the other end of each socket of the liquid cooling connector 320 can be connected to the coolant lines of the vehicle's thermal management system.

[0106] Figure 5 A schematic diagram of the interface of the liquid cooling gun 310 provided in this application is shown. Figure 5 As shown, the liquid cooling gun 310 includes a housing 311, a liquid cooling plug 312, and an electrical plug 313. The housing 311 includes a base plate 3111, which includes multiple sockets. Each plug in the liquid cooling plug 312 and the electrical plug 313 passes through the base plate 3111 through a different socket.

[0107] The liquid cooling connector 312 includes a supply connector 312a and a return connector 312b. The supply connector 312a is used to supply coolant from the liquid cooling unit to the electric vehicle, and the return connector 312b is used to supply coolant output from the electric vehicle seat to the liquid cooling unit. The electrical connector 313 includes a connection confirmation connector 313a, which is used to connect to the connection confirmation socket of the electric vehicle. The connection confirmation connector 313a is also used to connect to a connection confirmation circuit, in which the voltage at the detection point is used to indicate the connection status between the liquid cooling gun 310 and the electric vehicle.

[0108] Figure 6 A schematic diagram of the interface of the liquid-cooled connector 320 provided in this application is shown. Figure 6 As shown, the liquid-cooled connector 320 includes a housing 321, a liquid-cooled socket 322, and an electrical socket 323. The housing 321 includes a base plate 3211, which includes multiple sockets. The liquid-cooled socket 322 and the electrical socket 323 pass through the base plate 3211 through different sockets.

[0109] The liquid cooling socket 322 includes a liquid inlet socket 322a and a liquid outlet socket 322b. The liquid inlet socket 322a is used to deliver the coolant output from the liquid cooling gun 310 to the components of the electric vehicle to be cooled, and the liquid outlet socket 322b is used to deliver the coolant that has passed through the components to be cooled back to the liquid cooling gun 310. The electrical socket 323 includes a connection confirmation socket 323a, which is used to connect the connection confirmation plug 313a of the liquid cooling gun 310. The connection confirmation socket 323a is also used to connect a connection confirmation circuit, in which the voltage at the detection point is used to indicate the connection status between the electric vehicle and the liquid cooling gun 310.

[0110] In actual application, when the liquid-cooled gun 310 and the liquid-cooled connector 320 are plugged, the liquid supply plug 312a and the liquid inlet socket 322a are connected to each other, and the liquid return plug 312b and the liquid outlet socket 322b are connected to each other, at this time, the structure condition that the cooling liquid pipeline of the liquid-cooled device and the thermal management system is communicated to transmit the cooling liquid is provided. When the liquid-cooled gun 310 and the liquid connector 320 are plugged, and the vehicle controller detects that the connection confirmation plug 313a and the connection confirmation socket 323a are electrically connected, the vehicle controller controls the cooling liquid pipeline (such as the liquid inlet pipeline 3223 and the liquid outlet pipeline 3224 in the above Figure 3 ) of the thermal management system to be open, the vehicle controller communicates with the liquid-cooled device controller, the liquid-cooled device controller controls the liquid-cooled device to be open, so that the cooling liquid pipeline of the thermal management system and the cooling liquid pipeline (such as the liquid supply pipeline 3123 and the liquid return pipeline 3124 in the above Figure 3 ) of the liquid-cooled unit can transmit the cooling liquid through the liquid supply plug 312a and the liquid inlet socket 322a connected to each other and the liquid return plug 312b and the liquid outlet socket 322b connected to each other, and the liquid-cooled device can assist the thermal management system to dissipate heat of the vehicle power battery, so as to improve the heat dissipation capability of the thermal management system on the vehicle to the vehicle power battery by using the liquid-cooled device under the vehicle, and meet the heat dissipation demand of the high-power charging of the power battery.

[0111] In the embodiment of the present application, for the liquid-cooled gun 310, the bottom plate 3111 of the liquid-cooled gun 310 includes a plurality of spaced accommodating cavities, the liquid-cooled plug 312 and the electric plug 313 are located in different accommodating cavities, such as the accommodating cavities 310a, 310b and 310c shown in Figure 5 . Specifically, the liquid-cooled plug 312 is located in the accommodating cavity 310a, and the electric plug 313 is located in the accommodating cavities 310b and 310c. It can be understood that the liquid-cooled plug 312 and the electric plug 313 are isolated by the accommodating cavities.

[0112] The present application designs that the liquid-cooled plug 312 and the electric plug 313 are located in different accommodating cavities, which can prevent the cooling liquid flowing through the liquid-cooled plug 312 from flowing into the electric plug 313, so as to avoid the charging accident caused by the cooling liquid flowing into the electric plug, and improve the safety of the electric vehicle charging. Specifically, during the process that the liquid-cooled gun 310 transports the cooling liquid to the power battery through the liquid-cooled connector 320, since the liquid-cooled plug 312 and the electric plug 313 are located in different accommodating cavities, the probability of the cooling liquid flowing through the liquid-cooled plug 312 into the electric plug 313 can be reduced, so as to prevent the charging abnormality caused by the cooling liquid flowing into the electric plug 313, which is beneficial to the normal charging of the electric vehicle and improves the safety of the electric vehicle charging and user experience.

[0113] For the liquid cooling connector 320, the bottom plate 3211 of the liquid cooling connector 320 includes a plurality of spaced accommodating cavities, and the liquid cooling socket 322 and the electric socket 323 are located in different accommodating cavities, such as the accommodating cavities 320a, 320b, and 320c shown in FIG. 6. Specifically, the liquid cooling socket 322 is located in the accommodating cavity 320a, and the electric socket 323 is located in the accommodating cavities 320b and 320c. It can be understood that the liquid cooling socket 322 and the electric socket 323 are isolated by the accommodating cavities. Figure 6

[0114] The liquid cooling socket 322 and the electric socket 323 are designed to be located in different accommodating cavities, which can prevent the cooling liquid flowing through the liquid cooling socket 322 from flowing into the electric socket 323, so as to avoid the charging accident that may be caused by the cooling liquid flowing into the electric connector, and improve the safety of the electric vehicle charging. Specifically, during the process that the liquid cooling gun 310 delivers the cooling liquid to the power battery through the liquid cooling connector 320, since the liquid cooling socket 322 and the electric socket 323 are located in different accommodating cavities, the probability of the cooling liquid flowing through the liquid cooling socket 322 into the electric socket 323 can be reduced, so as to prevent the charging abnormality that may be caused by the cooling liquid flowing into the electric socket 323, facilitate the normal charging of the electric vehicle, and improve the safety of the electric vehicle charging and the user experience.

[0115] It should be understood that, Figure 5 The specific arrangement mode of the liquid cooling plug 312, the electric plug 313, and the accommodating cavities shown in FIG. 6 is only one example. In one possible implementation, the liquid supply plug 312a and the liquid return plug 312b of the liquid cooling plug 312 are arranged in two different accommodating cavities, and the electric plug 313 is arranged in another accommodating cavity except the two accommodating cavities. Similarly, Figure 6 The specific arrangement mode of the liquid cooling socket 322, the electric socket 323, and the accommodating cavities shown in FIG. 6 is only one example. The liquid inlet socket 322a and the liquid outlet socket 322b of the liquid cooling socket 322 are arranged in two different accommodating cavities, and the electric socket 323 is arranged in another accommodating cavity except the two accommodating cavities.

[0116] The above Figure 5 In the schematic diagram shown in FIG. 6, since the liquid cooling plug 312 and the electric plug 313 are arranged in different accommodating cavities, the isolation of the cooling liquid and the electric current is achieved, and the liquid supply plug 312a and the liquid return plug 312b are arranged along the gravity direction, and the two electric plugs 313 are arranged along the direction perpendicular to the gravity direction. When the liquid cooling gun 310 transmits the cooling liquid to the electric vehicle, the cooling liquid flowing through the liquid cooling plug 312 will not flow into the electric plug 313, so as to avoid the charging abnormality or the charging accident that may be caused by the cooling liquid flowing into the electric plug 313, and improve the safety of the electric vehicle charging.

[0117] The above Figure 6 ​As shown in the schematic diagram, since the liquid cooling socket 322 and the electric socket 323 are arranged in different accommodating cavities, the isolation of the cooling liquid and the electric current is achieved, and the liquid inlet socket 322a and the liquid outlet socket 322b are arranged along the gravity direction, and the two electric sockets 323 are arranged along the direction perpendicular to the gravity direction. When the liquid cooling gun 310 transmits the cooling liquid to the electric vehicle through the liquid cooling connector 320, the cooling liquid flowing through the liquid cooling socket 322 cannot enter the electric socket 323, so that the charging abnormality or the charging accident caused by the inflow of the cooling liquid into the electric socket 323 can be avoided, and the safety of the charging of the electric vehicle is improved.

[0118] In an embodiment, the two electric plugs 313 can be arranged along the gravity direction, and the liquid supply plug 312a and the liquid return plug 312b can be arranged along the direction perpendicular to the gravity direction, as shown in Figure 7 In an embodiment, the two electric sockets 323 can be arranged along the gravity direction, and the liquid inlet socket 322a and the liquid outlet socket 322b can be arranged along the direction perpendicular to the gravity direction, as shown in Figure 8 .

[0119] In combination with Figure 7 and Figure 8 , the design can still reduce the probability of the charging abnormality or the charging accident caused by the inflow of the cooling liquid into the electric plug 313 or the electric socket 323, and improve the safety of the charging of the electric vehicle.

[0120] The above Figure 5 and Figure 7 show the arrangement direction of the plugs of the liquid cooling gun 310. In an actual scene, in order to further avoid the inflow of the cooling liquid into the electric plug 313, in an embodiment, for the liquid cooling gun 310, the projection of the liquid cooling plug 312 along the gravity direction and the projection of the electric plug 313 along the gravity direction do not coincide.

[0121] Referring to the above Figure 5 , the gravity direction is the z direction shown in the figure, that is, the projection of the liquid cooling plug 312 along the z direction and the projection of the electric plug 313 along the z direction do not coincide. In the process of transmitting the cooling liquid to the power battery through the liquid cooling connector 320, when the connection between the liquid cooling plug 312 and the liquid cooling socket 322 is loose, a small amount of cooling liquid may drip downward along the z direction. Since the projection of the liquid cooling plug 312 along the gravity direction and the projection of the electric plug 313 along the gravity direction do not coincide, the cooling liquid cannot flow into the electric plug 313, so that the charging abnormality caused by the inflow of the cooling liquid into the electric plug 313 can be avoided, the normal charging of the electric vehicle is ensured, and even the charging accident caused by the inflow of the cooling liquid into the electric plug 313 can be avoided, and the safety of the charging of the electric vehicle is improved.

[0122] Moreover, such a design can also ensure the safety of the user. Specifically, when the liquid-cooled gun 310 is pulled out of the liquid-cooled connector 320, even if the liquid-cooled plug 312 of the liquid-cooled gun 310 drips a small amount of cooling liquid, the small amount of cooling liquid will not flow into the electric plug 313, so as to prevent the user from being injured when the user accidentally touches the electric plug 313, thereby ensuring the safety of the user. In addition, it can also prevent the charging accident caused by the electric plug 313 having cooling liquid when the liquid-cooled gun 310 is plugged into the liquid-cooled connector 320 again, thereby improving the safety of charging the electric vehicle.

[0123] The above Figure 6 and Figure 8 The arrangement direction of the socket of the liquid-cooled connector 320 is shown. In actual scenarios, in order to further prevent the cooling liquid from entering the electric socket 323, in an embodiment, for the liquid-cooled connector 320, the projection of the liquid-cooled socket 322 and the projection of the electric socket 323 do not coincide in the direction of gravity.

[0124] Referring to the above Figure 6 , the direction of gravity is the z direction shown in the figure, that is, the projection of the liquid-cooled socket 322 and the projection of the electric socket 323 do not coincide in the z direction. In the process of the liquid-cooled gun 310 delivering cooling liquid to the power battery through the liquid-cooled connector 320, when the connection between the liquid-cooled socket 322 and the liquid-cooled plug 312 is loose, a small amount of cooling liquid may drip downward along the z direction. Since the projection of the liquid-cooled socket 322 and the projection of the electric socket 323 do not coincide in the direction of gravity, the cooling liquid will not flow into the electric socket 323, thereby avoiding the charging abnormality that may be caused by the cooling liquid flowing into the electric socket 323, ensuring the normal charging of the electric vehicle, and even avoiding the charging accident that may be caused by the cooling liquid flowing into the electric socket 323, thereby improving the safety of charging the electric vehicle.

[0125] Moreover, such a design can also ensure the safety of the user. Specifically, when the liquid-cooled gun 310 is pulled out of the liquid-cooled connector 320, even if the liquid-cooled plug 312 of the liquid-cooled gun 310 drips a small amount of cooling liquid, the small amount of cooling liquid will not flow into the electric plug 313, so as to prevent the user from being injured when the user accidentally touches the electric plug 313, thereby ensuring the safety of the user. In addition, it can also prevent the charging accident caused by the electric plug 313 having cooling liquid when the liquid-cooled gun 310 is plugged into the liquid-cooled connector 320 again, thereby improving the safety of charging the electric vehicle.

[0126] For the liquid-cooled gun 310 shown in Figure 7 , similar to the above Figure 5 , the cooling liquid can also be prevented from entering the electric plug 313, thereby avoiding the charging abnormality or the charging accident that may be caused by the cooling liquid flowing into the electric plug 313, and improving the safety of charging the electric vehicle.

[0127] For Figure 8 the same reasons as described above, Figure 6 the cooling liquid can also be prevented from entering the electrical socket 323, so that the abnormal charging or charging accidents caused by the cooling liquid flowing into the electrical socket 323 can be avoided, and the safety of the electric vehicle charging can be improved.

[0128] In the embodiments of the present application, the liquid supply plug 312a and the liquid return plug 312b are arranged according to the above Figure 5 or Figure 7 . Taking Figure 5 for example, it can be seen that the liquid cooling plug 312 and the electrical plug 313 are arranged in an oval-shaped gun head body, wherein the liquid supply plug 312a and the liquid return plug 312b are arranged in an accommodation cavity 320a similar to the shape of an "8" character, and the two groups of electrical plugs 313 are arranged on the two sides between the liquid supply plug 312a and the liquid return plug 312b, that is, the two groups of electrical plugs 313 are arranged close to the middle of the liquid supply plug 312a and the liquid return plug 312b, so that the plugs of the liquid cooling gun 310 are arranged relatively compact with each other, and this design can also reduce the volume of the liquid cooling gun 310, which is beneficial to the user to insert the liquid cooling gun 310 into the liquid cooling connector 320, and improves the user experience.

[0129] Similarly, the liquid inlet socket 322a and the liquid outlet socket 322b can be arranged according to Figure 6 or Figure 8 . Taking Figure 6 for example, it can be seen that the liquid cooling socket 322 and the electrical socket 323 are arranged in an oval-shaped liquid cooling connector body, wherein the liquid inlet socket 322a and the liquid outlet socket 322b can be arranged in an accommodation cavity 320a, and the two groups of electrical sockets 323 are arranged on the two sides between the liquid inlet socket 322a and the liquid outlet socket 322b, that is, the two groups of electrical sockets 323 are arranged close to the middle of the liquid inlet socket 322a and the liquid outlet socket 322b, so that the sockets of the liquid cooling connector 320 are arranged relatively compact with each other, and this design can reduce the volume of the liquid cooling connector 320, which is beneficial to the miniaturization design of the liquid cooling connector 320, and facilitates the installation of the liquid cooling connector 320 on the electric vehicle.

[0130] It should be understood that the cross-sectional view of the liquid cooling gun 310 and the liquid cooling connector 320 along the direction of gravity shown in the above Figures 5-8 is only one possible example, and in an embodiment, the cross-sectional view of the liquid cooling gun 310 and the liquid cooling connector 320 along the direction of gravity can also refer to Figures 9-12 . Among them, Figure 9 and Figure 11 are cross-sectional views of the liquid cooling gun 310 along the direction of gravity, Figure 10 and Figure 12 are cross-sectional views of the liquid cooling connector 320 along the direction of gravity.

[0131] Figures 9-12 The design principle of the liquid cooler 310 and the liquid cooling connector 320 in the schematic diagram shown is similar to the above-mentioned Figures 5-8 The difference is that the cross-sectional schematic diagram along the direction of gravity shown in Figures 9-12 is different from the cross-sectional schematic diagram along the direction of gravity shown in the above-mentioned Figures 5-8 .

[0132] Generally, the liquid cooling plug 312 is connected with the liquid cooling pipeline, and the liquid cooling plug 312 can deliver the cooling liquid from the liquid cooling assembly to the power battery through the liquid cooling pipeline, but in some cases, the connection between the liquid cooling plug 312 and the liquid cooling pipeline may be loose, resulting in a liquid leakage phenomenon. Therefore, in an embodiment, the liquid supply plug 312a is connected with the liquid cooling unit through the liquid supply pipeline 3123, and the liquid return plug 312b is connected with the liquid cooling unit through the liquid return pipeline 3124. The liquid cooling gun further comprises two fluid connectors, wherein the liquid supply plug 312a and the liquid supply pipeline 3123 are connected through one of the fluid connectors, and the liquid return plug 312b and the liquid return pipeline 3124 are connected through the other fluid connector.

[0133] In the embodiment of the present application, for the liquid cooling gun 310, the liquid supply plug 312a and the liquid supply pipeline 3123 are connected through one fluid connector, which is the first fluid supply connector 3121 in the above-mentioned Figure 3 . The fluid connector can fasten the connection between the liquid supply plug 312a and the liquid supply pipeline 3123, preventing the liquid leakage phenomenon that may occur when the liquid supply plug 312a and the liquid supply pipeline 3123 are directly connected. The liquid return plug 312b and the liquid return pipeline are connected through another fluid connector, which is the first fluid return connector 3122 in the above-mentioned Figure 3 . The other fluid connector can fasten the connection between the liquid return plug 312b and the liquid return pipeline 3124, preventing the liquid leakage phenomenon that may occur when the liquid return plug 312b and the liquid return pipeline 3124 are directly connected.

[0134] Specifically, the fluid connector in the liquid cooling gun 310 can be a connecting nut, a gasket, etc.

[0135] It should be understood that the arrangement of the fluid joint in the liquid cooling gun 310 described above can ensure the normal operation of the high-power charging of the electric vehicle, and can also avoid damage to the power battery and the occurrence of charging accidents. Specifically, when the liquid cooling gun 310 is plugged with the liquid cooling connector 320 of the electric vehicle, the electric vehicle sends a message to the liquid cooling device connected to the liquid cooling gun 310 for requesting the required flow of the cooling liquid, and the liquid cooling device can transmit the cooling liquid to the electric vehicle according to the required flow of the cooling liquid requested by the electric vehicle. When the liquid supply plug 312a and the liquid supply pipeline 3123 are well connected, the flow of the cooling liquid transmitted to the power battery is substantially equal to the flow of the cooling liquid provided by the liquid cooling device, so that when the electric vehicle is charged at a relatively large power, the cooling liquid delivered by the liquid cooling gun can meet the heat dissipation requirement of the electric vehicle during high-power charging. When the liquid supply plug 312a and the liquid supply pipeline 3123 are loose, the flow of the cooling liquid transmitted to the power battery is less than the flow of the cooling liquid provided by the liquid cooling device. If the electric vehicle is still charged at a relatively large power, but the cooling liquid transmitted to the power battery cannot meet the heat dissipation requirement of the power battery during high-power charging, the power battery will generate a large amount of heat, and in severe cases, the power battery can be damaged and a charging accident can occur. If the electric vehicle is charged at a relatively small power, it cannot meet the high-power charging of the electric vehicle, resulting in slow charging speed and reduced user experience. Therefore, the fluid joint is arranged between the liquid supply plug 312a and the liquid supply pipeline 3123, which can ensure the normal operation of the high-power charging of the electric vehicle and improve the user experience, and can also avoid damage to the power battery and the occurrence of charging accidents.

[0136] Similarly, the connection between the liquid cooling socket 322 and the liquid cooling pipeline can also be loose, resulting in a liquid leakage phenomenon. Therefore, in an embodiment, the liquid inlet socket 322a is connected to the power battery through the liquid inlet pipeline 3223, and the liquid outlet socket 322b is connected to the power battery through the liquid outlet pipeline 3224. The liquid cooling connector 320 further comprises two fluid joints, wherein the liquid inlet socket 322a and the liquid inlet pipeline 3223 are connected through one of the fluid joints, and the liquid outlet socket 322b and the liquid outlet pipeline 3224 are connected through the other fluid joint.

[0137] In the embodiment of the present application, for the liquid cooling connector 320, the liquid inlet socket 322a and the liquid inlet pipeline 3223 are connected through one fluid joint, and the one fluid joint is the fluid joint described above Figure 3The one fluid connector can fasten the connection between the liquid inlet socket 322a and the liquid inlet pipeline 3223, preventing the liquid leakage that can occur when the liquid inlet socket 322a and the liquid inlet pipeline 3223 are directly connected. The liquid outlet socket 322b and the liquid outlet pipeline 3224 are connected through another fluid connector, which can fasten the connection between the liquid outlet socket 322b and the liquid outlet pipeline 3224, preventing the liquid leakage that can occur when the liquid outlet socket 322b and the liquid outlet pipeline 3224 are directly connected.

[0138] In the liquid cooling connector, the two fluid connectors can also be connecting nuts, gaskets, etc.

[0139] It should be understood that the arrangement of the fluid connectors in the liquid cooling connector 320 is conducive to the normal operation of the high-power charging of the electric vehicle and avoids damage to the power battery and charging accidents. Specifically, when the liquid cooling gun 310 is plugged with the liquid cooling connector 320 of the electric vehicle, the electric vehicle sends a message to the liquid cooling device connected to the liquid cooling gun 310 for requesting the required flow of the cooling liquid, and the liquid cooling device can transmit the cooling liquid to the electric vehicle according to the required flow of the cooling liquid requested by the electric vehicle. When the liquid inlet socket 322a and the liquid inlet pipeline 3223 are well connected, the flow of the cooling liquid transmitted to the power battery is substantially equal to the flow of the cooling liquid provided by the liquid cooling device, so that when the electric vehicle is charged at a relatively large power, the cooling liquid delivered by the liquid cooling gun can meet the heat dissipation demand of the electric vehicle during high-power charging. When the liquid inlet socket 322a and the liquid inlet pipeline 3223 are loose, the flow of the cooling liquid transmitted to the power battery is less than the flow of the cooling liquid provided by the liquid cooling device. If the electric vehicle is still charged at a relatively large power, but the cooling liquid transmitted to the power battery cannot meet the heat dissipation demand of the power battery during high-power charging, the power battery can generate a large amount of heat, which can seriously damage the power battery and cause a charging accident. If the electric vehicle is charged at a relatively small power, it cannot meet the high-power charging of the electric vehicle, resulting in a slow charging speed and a reduced user experience. Therefore, the liquid inlet socket 322a and the liquid inlet pipeline 3223 are connected through the fluid connector, which is conducive to the normal operation of the high-power charging of the electric vehicle, thereby improving the user experience, and can also avoid damage to the power battery and charging accidents.

[0140] The length relationship between the plugs of the liquid cooling gun 310 and the sockets of the liquid cooling connector 320 will be described below.

[0141] In one embodiment, referring to Figure 13The distance between one end of the liquid cooling plug 312 and the bottom plate 3111 is greater than the distance between one end of the connection confirmation plug 313a and the bottom plate 3111, or the distance between one end of the liquid cooling plug 312 and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is less than the distance between one end of the connection confirmation plug 313a and the end face 3112 of the accommodating cavity away from the bottom plate 3111. Wherein, one end of the liquid cooling plug 312 and one end of the connection confirmation plug 313a are exposed to the shell.

[0142] In the embodiment of the application, one end of the liquid cooling plug 312 and one end of the connection confirmation plug 313a are exposed to the shell, and one end of the liquid cooling plug 312 and one end of the connection confirmation plug 313a can be understood as the end away from the bottom plate 3111, that is, the end close to the liquid cooling connector 320.

[0143] In the embodiment of the application, the distance between one end of the liquid cooling plug 312 and the bottom plate 3111 is greater than the distance between one end of the connection confirmation plug 313a and the bottom plate 3111, or the distance between one end of the liquid cooling plug 312 and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is less than the distance between one end of the connection confirmation plug 313a and the end face 3112 of the accommodating cavity away from the bottom plate 3111. Wherein, one end of the liquid cooling plug 312 and one end of the connection confirmation plug 313a are exposed to the shell.

[0144] This is because, if the connection confirmation plug 313a and the connection confirmation socket 323a are connected first, and the liquid cooling plug 312 and the liquid cooling socket 322 are connected later, it is possible that the connection confirmation plug 313a and the connection confirmation socket 323a have been connected, but the liquid cooling plug 312 has not been connected with the liquid cooling socket 322. This leads to the liquid cooling device misjudging that the liquid cooling plug 312 and the liquid cooling socket 322 that have not been successfully connected are in a connected state, and when the liquid cooling device delivers cooling liquid to the electric vehicle, it is easy to cause liquid leakage. Therefore, in the embodiment of the application, by designing the liquid cooling plug 312 to be connected with the liquid cooling socket 322 first, and the connection confirmation plug 313a to be connected with the connection confirmation socket 323a later, the problem of liquid leakage caused by misjudging the connection state of the liquid cooling plug 312 and the liquid cooling socket 322 can be avoided, which is conducive to the normal charging of the electric vehicle at high power, and further improves the user experience.

[0145] In one embodiment, continuing to refer to Figure 13The distance between one end of the liquid cooling socket 322 and the bottom plate 3211 is greater than the distance between one end of the connection confirmation socket 323a and the bottom plate 3211, or the distance between one end of the liquid cooling socket 322 and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is less than the distance between one end of the connection confirmation socket 323a and the end face 3212 of the accommodating cavity away from the bottom plate 3211. Wherein, one end of the liquid cooling socket 322 and one end of the connection confirmation socket 323a are exposed to the shell.

[0146] In the embodiment of the application, one end of the liquid cooling socket 322 and one end of the connection confirmation socket 323a are exposed to the shell, and one end of the liquid cooling socket 322 and one end of the connection confirmation socket 323a can be understood as the end away from the bottom plate 3211, that is, the end close to the liquid cooling gun 310.

[0147] In the embodiment of the application, the distance between one end of the liquid cooling socket 322 and the bottom plate 3211 is greater than the distance between one end of the connection confirmation socket 323a and the bottom plate 3211, or the distance between one end of the liquid cooling socket 322 and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is less than the distance between one end of the connection confirmation socket 323a and the end face 3212 of the accommodating cavity away from the bottom plate 3211. Wherein, one end of the liquid cooling socket 322 and one end of the connection confirmation socket 323a are exposed to the shell.

[0148] This is because, if the connection confirmation socket 323a and the connection confirmation plug 313a are connected first, and the liquid cooling socket 322 and the liquid cooling plug 312 are connected later, it is possible that the connection confirmation socket 323a and the connection confirmation plug 313a are connected, but the liquid cooling socket 322 is not connected with the liquid cooling plug 312. This leads to the electric vehicle misjudging that the liquid cooling socket 322 and the liquid cooling plug 312 in the connection state are not successfully connected, and the liquid leakage occurs when the liquid cooling device delivers cooling liquid to the electric vehicle. Therefore, in the embodiment of the application, by designing the liquid cooling socket 322 and the liquid cooling plug 312 to be connected first, and the connection confirmation socket 323a and the connection confirmation plug 313a to be connected later, the liquid leakage problem caused by misjudging the connection state of the liquid cooling socket 322 and the liquid cooling plug 312 can be avoided, which is conducive to the normal operation of the electric vehicle high-power charging, and further improves the user experience.

[0149] It should be noted that the end face 3112 of the accommodating cavity away from the bottom plate 3111 mentioned in the above embodiment can be understood as the end face of the liquid cooling gun 310 that first contacts the liquid cooling connector 320 in the process of plugging the liquid cooling connector 320 into the liquid cooling gun 310. Similarly, the end face 3212 of the accommodating cavity away from the bottom plate 3211 can be understood as the end face of the liquid cooling connector 320 that first contacts the liquid cooling gun 310 in the process of plugging the liquid cooling gun 310 into the liquid cooling connector 320.

[0150] Figure 14 is an interface schematic diagram of a liquid cooling gun interface of a liquid cooling gun 310 and a vehicle liquid cooling interface of a liquid cooling connector of an electric vehicle provided by an embodiment of the present application.

[0151] Among them, the I plug and the O plug in the liquid cooling gun interface are Figure 3 The liquid inlet plug 312a and the liquid outlet plug 312b in the liquid cooling plug 312 shown in the above formula, the GE plug of the liquid cooling gun interface is the guide structure 314 mentioned above, the CC1 plug and the CC2 plug in the liquid cooling gun interface are the connection confirmation plug 313a mentioned above, the S+ plug and the S- plug in the liquid cooling gun interface are the communication plug in the following formula, and the PE plug in the liquid cooling gun interface is called the ground plug.

[0152] The I socket and the O socket in the vehicle liquid cooling interface are Figure 3 The liquid inlet socket 322a and the liquid outlet socket 322b in the liquid cooling socket 322 shown in the above formula, the GE socket in the vehicle liquid cooling interface is the guide structure 324 mentioned above, the CC1 socket and the CC2 socket in the vehicle liquid cooling interface are the connection confirmation socket 323a mentioned above, and the PE socket in the vehicle liquid cooling interface is the ground socket.

[0153] Taking the liquid cooling gun 310 as an example, the distance between one end of the liquid cooling plug 312 and the bottom plate 3111 is D0', the distance between one end of the connection confirmation plug 313a and the bottom plate 3111 is D1' and D2', and it can be seen from the figure that D0'>D1' and D0'>D2'. The distance between one end of the liquid cooling plug 312 and the end face of the accommodating cavity away from the bottom plate 3111 is d0', the distance between one end of the connection confirmation plug 313a and the end face of the accommodating cavity away from the bottom plate 3111 is d1' and d2', and it can be seen from the figure that d0'<d1' and d0'<d2'.

[0154] Taking the liquid cooling connector 320 as an example, the distance between one end of the liquid cooling socket 322 and the bottom plate 3211 is DO, the distance between one end of the connection confirmation socket 323a and the bottom plate 3211 is D1 and D2, and it can be seen from the figure that DO>D1 and DO>D2. The distance between one end of the liquid cooling socket 322 and the end face of the accommodating cavity away from the bottom plate 3211 is d0, the distance between one end of the connection confirmation socket 323a and the end face of the accommodating cavity away from the bottom plate 3211 is d1 and d2, and it can be seen from the figure that d0<d1 and d0<d2.

[0155] Based on the above design, during the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the liquid cooling socket 322 is preferentially connected with the liquid cooling plug 312, and then the connection confirmation socket 323a is connected with the connection confirmation plug 313a, which can avoid the liquid leakage problem caused by misjudging the connection state of the liquid cooling socket 322 and the liquid cooling plug 312, so as to ensure the normal heat dissipation of the liquid cooling device to the power battery of the electric vehicle, and further ensure the normal operation of the high-power charging of the electric vehicle, which is beneficial to improving the user experience.

[0156] The length relationship between the liquid cooling plug 312 and the connection confirmation plug 313a, and the length relationship between the liquid cooling socket 322 and the connection confirmation socket 323a are explained above. In an embodiment, the connection confirmation plug 313a can be two connection confirmation plugs, such as a first connection confirmation plug and a second connection confirmation plug. The connection confirmation socket 323a can also include two connection confirmation sockets, such as a first connection confirmation socket and a second connection confirmation socket. The length relationship between the two connection confirmation plugs and the two connection confirmation sockets will be explained below.

[0157] In the embodiment of the application, the first connection confirmation plug can be CC1, and the second connection confirmation plug can be CC2. Alternatively, the first connection confirmation plug can be CC2, and the second connection confirmation plug can be CC1.

[0158] Taking the first connection confirmation plug as CC1 and the second connection confirmation plug as CC2 as an example, the distance between one end of the first connection confirmation plug CC1 and the bottom plate 3111 is less than the distance between one end of the second connection confirmation plug CC2 and the bottom plate 3111; or the distance between one end of the first connection confirmation plug CC1 and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is greater than the distance between one end of the second connection confirmation plug CC2 and the end face 3112 of the accommodating cavity away from the bottom plate 3111.

[0159] In the embodiment of the present application, the liquid cooling device can determine the connection state of the liquid cooling socket 322 and the liquid cooling plug 312 according to the first connection confirmation plug (CC1 plug) and the first connection confirmation socket (CC1 socket). Since d1'>d2', during the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the second liquid cooling connection confirmation socket is connected with the second liquid cooling connection confirmation plug first, and the first liquid cooling connection confirmation socket is connected with the first liquid cooling connection confirmation plug later. This is equivalent to that the liquid cooling device performs the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug, which is beneficial to reduce the time length of starting charging, so as to improve the efficiency of starting charging.

[0160] This is because if the first liquid cooling connection confirmation socket is connected with the first connection confirmation plug first, and the second liquid cooling connection confirmation socket is connected with the second connection confirmation plug later, the electric vehicle completes the final complete connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312. After the second connection confirmation plug is connected with the second connection confirmation plug, the electric vehicle will perform a series of preparation actions before charging, such as the wake-up of the battery management system. After the series of preparation actions before charging are completed, the electric vehicle will send a message requesting cooling liquid to the charging pile to prepare for the charging stage. In this case, the liquid cooling device is prior to the electric vehicle to perform the connection confirmation of the liquid cooling socket and the liquid cooling plug, and after the electric vehicle performs the connection confirmation of the liquid cooling socket and the liquid cooling plug, the electric vehicle performs a series of preparation actions before charging, which will occupy a certain time length, resulting in a longer time length of starting charging and a lower efficiency of starting charging.

[0161] If the second connection confirmation socket is connected with the second connection confirmation plug first, and the first connection confirmation socket is connected with the first connection confirmation plug later, the liquid cooling device completes the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug. When the second connection confirmation socket is connected with the second connection confirmation plug, but the first connection confirmation socket is not connected with the first connection confirmation plug, the electric vehicle can perform a series of preparation actions before charging, such as the wake-up of the battery management system described above. When the first connection confirmation socket is connected with the first connection confirmation plug, the liquid cooling device considers that the liquid cooling socket and the liquid cooling plug are successfully connected, so that the cooling liquid can be delivered to the electric vehicle. In this case, the electric vehicle is prior to the liquid cooling device to perform the connection confirmation of the liquid cooling socket and the liquid cooling plug, and after the electric vehicle performs the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312, the electric vehicle can perform a series of preparation actions before charging. At the same time, the liquid cooling device can also perform the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312, which is equivalent to that the series of preparation actions before charging performed by the electric vehicle and the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312 performed by the liquid cooling device can be performed synchronously. Therefore, the design of the present application is beneficial to reduce the time length of starting charging, so as to improve the efficiency of starting charging.

[0162] With reference to Figure 14 , the distance between one end of the first connection confirmation plug CC1 and the bottom plate 3111 is D1', and the distance between one end of the second connection confirmation plug CC2 and the bottom plate 3111 is D2'. As can be seen from the figure, D1' < D2'. The distance between one end of the first connection confirmation plug CC1 and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is d1', and the distance between one end of the second connection confirmation plug CC2 and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is d2'. As can be seen from the figure, d1' > d2'.

[0163] In the embodiments of the present application, the first connection confirmation socket can be CC1, and the second connection confirmation socket can be CC2. Alternatively, the first connection confirmation socket can be CC2, and the second connection confirmation socket can be CC1.

[0164] Taking the first connection confirmation socket as CC1 and the second connection confirmation socket as CC2 as an example. The distance between one end of the first connection confirmation socket CC1 and the bottom plate 3211 is less than the distance between one end of the second connection confirmation socket CC2 and the bottom plate 3211; or, the distance between one end of the first connection confirmation socket CC1 and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is greater than the distance between one end of the second connection confirmation socket CC2 and the end surface 3212 of the accommodating cavity away from the bottom plate 3211.

[0165] With reference to Figure 14 , the distance between one end of the first connection confirmation socket CC1 and the bottom plate 3211 is D1, and the distance between one end of the second connection confirmation socket CC2 and the bottom plate 3211 is D2. As can be seen from the figure, D1 < D2. The distance between one end of the first connection confirmation socket CC1 and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is d1, and the distance between one end of the second connection confirmation socket CC2 and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is d2. As can be seen from the figure, d1' > d2.

[0166] In the embodiments of the present application, the electric vehicle judges the connection state of the liquid cooling socket 322 and the liquid cooling plug 312 according to the second connection confirmation plug (CC2 plug) and the second connection confirmation socket (CC2 socket). Since d1 > d2 and d1' > d2', during the process of inserting the liquid cooling connector 320 by the liquid cooling gun 310, the second liquid cooling connection confirmation socket is connected first, and the first liquid cooling connection confirmation socket is connected later. This is equivalent to that the final complete connection confirmation of the liquid cooling socket and the liquid cooling plug is not performed by the electric vehicle, but by the liquid cooling device, which is conducive to reducing the time length of starting charging, thereby improving the efficiency of starting charging. For specific reasons, reference can be made to the related description of the liquid cooling device above, which will not be described here.

[0167] It should be understood that when the first connection confirmation plug is the CC2 plug, and the second connection confirmation plug is the CC1 plug; the first connection confirmation socket is the CC2 socket, and the second connection confirmation socket is the CC1 socket, the liquid cooling device can determine the connection state of the liquid cooling socket and the liquid cooling plug according to the second connection confirmation plug (i.e., the CC1 plug) and the second connection confirmation socket (i.e., the CC1 socket), and the electric vehicle determines the connection state of the liquid cooling socket and the liquid cooling plug according to the first connection confirmation plug (i.e., the CC2 plug) and the first connection confirmation socket (i.e., the CC2 socket).

[0168] It can be understood that the distance design of the above-mentioned sockets and plugs is only illustrative, and can be flexibly adjusted according to actual production and design needs. For example, in some other embodiments, the distance d1 between one end of the first connection confirmation socket (CC1 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is equal to the distance d2 between the end surface of the second connection confirmation socket (CC2 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211. The distance d1' between one end of the first connection confirmation plug (CC1 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is greater than the distance d2' between the end surface of the second connection confirmation plug (CC2 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111, i.e., d1 = d2, d1' > d2'. Based on the above design, during the connection of the liquid cooling gun 310 and the liquid cooling connector 320, the second connection confirmation socket and the second connection confirmation plug can also be connected first, and the first connection confirmation socket and the first connection confirmation plug can be connected later.

[0169] Alternatively, the distance d1 between the end surface of the first connection confirmation socket (CC1 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is greater than the distance d2 between the end surface of the second connection confirmation socket (CC2 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211. The distance d1' between the end surface of the first connection confirmation plug (CC1 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is equal to the distance d2' between the end surface of the second connection confirmation plug (CC2 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111, i.e., d1 > d2, d1' = d2'. Based on the above design, during the connection of the liquid cooling gun 310 and the liquid cooling connector 320, the second connection confirmation socket and the second connection confirmation plug can also be connected first, and the first connection confirmation socket and the first connection confirmation plug can be connected later.

[0170] In an embodiment, referring to the above Figure 5 The electric plug further comprises a communication plug 313b for connecting a communication socket of the electric vehicle. The communication plug 313b is the communication plug S+ and S- in the following.

[0171] The distance between the one end of the communication plug S+ and S- and the bottom plate 3111 is greater than the distance between the one end of the first connection confirmation plug CC1 and the bottom plate 3111, and the distance between the one end of the communication plug S+ and S- and the bottom plate 3111 is less than the distance between the one end of the second connection confirmation plug CC2 and the bottom plate 3111; or the distance between the one end of the communication plug S+ and S- and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is less than the distance between the one end of the first connection confirmation plug CC1 and the end surface of the accommodating cavity away from the bottom plate 3111, and the distance between the one end of the communication plug S+ and S- and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is greater than the distance between the one end of the second connection confirmation plug CC2 and the end surface 3112 of the accommodating cavity away from the bottom plate 3111. Wherein the one end of the communication plug S+ and S- is exposed outside the shell.

[0172] Reference Figure 14 The distance between the one end of the communication plug S+ and S- and the bottom plate 3111 is D3', the distance between the one end of the first connection confirmation plug CC1 and the bottom plate 3111 is D1', and the distance between the one end of the second connection confirmation plug CC2 and the bottom plate 3111 is D2'. As can be seen from the figure, D3'>D1' and D3

[0173] In the embodiment of the present application, since D3'>D1' and D3

[0174] The reason is that if the two connection confirmation sockets and the corresponding connection confirmation plugs are connected first, and the communication plugs S+ and S- and the communication sockets S+ and S- are connected later, only after the liquid cooling device and the electric vehicle both complete the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312, can the liquid cooling device and the electric vehicle send messages to each other through the communication plugs S+ and S- and the communication sockets S+ and S-. After the corresponding message sending is completed, the cooling liquid is delivered to prepare for the charging stage. In the second connection confirmation plug and the second connection confirmation socket are connected first, and the communication plugs S+ and S- and the communication sockets S+ and S- are connected again, and the first connection confirmation plug and the first connection confirmation socket are connected last. In this way, after the electric vehicle completes the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312, the liquid cooling device and the electric vehicle can send messages to each other in the case of connection of the communication plugs S+ and S- and the communication sockets S+ and S-. When the liquid cooling device completes the connection confirmation of the liquid cooling socket 322 and the liquid cooling plug 312, the cooling liquid can be delivered to prepare for the charging stage, which is beneficial to reduce the time length of starting charging, thereby improving the efficiency of starting charging.

[0175] In addition, in the embodiment of the application, the communication plugs S+ and S- and the connection confirmation plug 313a are arranged in the same accommodating cavity, which can reduce the number of accommodating cavities, thereby simplifying the design and reducing the processing complexity.

[0176] In one embodiment, referring to the above Figure 6 , the electric socket further comprises a communication socket 323b for connecting the communication plug of the liquid cooling gun. The communication socket 323b is the communication socket S+ and S- in the following.

[0177] The distance between one end of the communication socket S+ and S- and the bottom plate 3211 is equal to the distance between one end of the first connection confirmation socket CC1 and the bottom plate 3211, or the distance between one end of the communication socket S+ and S- and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is equal to the distance between one end of the first connection confirmation socket CC1 and the end face 3212 of the accommodating cavity away from the bottom plate 3211. One end of the communication socket S+ and S- is exposed outside the shell.

[0178] Referring to Figure 14 , the distance between one end of the communication socket S+ and S- and the bottom plate 3211 is D3, the distance between one end of the first connection confirmation socket CC1 and the bottom plate 3211 is D1, and D3=D1. The distance between one end of the communication socket S+ and S- and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is d3, the distance between one end of the first connection confirmation socket CC1 and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is d1, and d3=d1.

[0179] In the embodiment of the present application, since D3=D1, D3

[0180] It should be noted that the distance between one end of the communication socket S+ and the bottom plate 3211 is equal to the distance between one end of the first connection confirmation socket CC1 and the bottom plate 3211, which can reduce the size of the liquid cooling connector 320, facilitate the integration of the liquid cooling connector 320, and facilitate the installation of the liquid cooling connector 320 on the electric vehicle.

[0181] In addition, in the embodiment of the present application, the communication socket S+ and the connection confirmation socket 323a are arranged in the same accommodating cavity, which can reduce the number of accommodating cavities, thereby simplifying the design and reducing the processing complexity.

[0182] In one embodiment, referring to the above description Figure 5 The electric plug further includes a grounding plug 313c for connecting a grounding socket of the electric vehicle. The grounding plug 313 is the grounding plug PE in the following description.

[0183] The distance between one end of the grounding plug PE and the bottom plate 3111 is less than the distance between one end of the liquid cooling plug 312 and the bottom plate 3111, and the distance between one end of the grounding plug PE and the bottom plate 3111 is greater than the distance between one end of the connection confirmation plug 313a and the bottom plate 3111. Alternatively, the distance between one end of the grounding plug PE and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is greater than the distance between one end of the liquid cooling plug 312 and the end surface of the accommodating cavity away from the bottom plate 3111, and the distance between one end of the grounding plug PE and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is less than the distance between one end of the connection confirmation plug 313a and the end surface 3112 of the accommodating cavity away from the bottom plate 3111. One end of the grounding plug PE is exposed outside the housing.

[0184] Referring to the above description Figure 14The distance between one end of the grounding plug PE and the bottom plate 3111 is D4', the distance between one end of the liquid cooling plug 312 and the bottom plate 3111 is D0', the distance between one end of the connection confirmation plug 313a and the bottom plate 3111 is D1', D2', and D4' < D0', D4' > D2', D4' > D1'. The distance between one end of the grounding plug PE and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is d4', the distance between one end of the liquid cooling plug 312 and the end face of the accommodating cavity away from the bottom plate 3111 is d0', the distance between one end of the connection confirmation plug 313a and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is d1', d2', and d4' > d0', d4' < d1', d4' < d2'.

[0185] In the embodiment of the present application, since D4' < D0', D4' > D2', and D4' > D1', during the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the liquid cooling plug 312 is first connected with the liquid cooling socket 322, the grounding plug PE is then connected with the grounding socket PE, and finally the connection confirmation plugs CC1 and CC2 are connected with the connection confirmation sockets CC1 and CC2. This design is conducive to the accurate judgment of the connection state of the liquid cooling plug 312 and the liquid cooling socket 322 by the liquid cooling equipment according to the connection confirmation plugs CC1 and CC2 and the connection confirmation sockets CC1 and CC2, and can improve the correctness of the liquid cooling equipment or the electric vehicle in judging the connection state of the liquid cooling plug and the liquid cooling socket, thereby ensuring the normal operation of the electric vehicle for high-power charging.

[0186] The reason is that if the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2 are connected first, and the grounding plug PE and the grounding socket PE are connected later, when the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2 have been connected and the grounding plug PE and the grounding socket PE have not been connected, the connection confirmation plug CC1, CC2, the connection confirmation socket CC1, CC2, and the connection confirmation circuit connected by the connection confirmation plug CC1, CC2, and the connection confirmation circuit connected by the connection confirmation socket CC1, CC2 do not form a path, the voltage of the detection point on the connection confirmation circuit does not change, and the liquid cooling device considers that the liquid cooling plug and the liquid cooling socket are not successfully connected, but in fact the liquid cooling plug and the liquid cooling socket have been successfully connected, resulting in a misjudgment of the connection state of the liquid cooling plug and the liquid cooling socket by the liquid cooling device, thereby affecting the normal operation of the electric vehicle for high-power charging. Until the grounding plug and the grounding socket are connected, the electric vehicle or the liquid cooling device confirms that the liquid cooling plug and the liquid cooling socket are successfully connected according to the change of the voltage of the detection point on the connection confirmation circuit, although the liquid cooling device can deliver cooling liquid to the electric vehicle, but in this process, the time length of the liquid cooling device to confirm the connection state of the liquid cooling plug and the liquid cooling socket is increased, resulting in a decrease in the efficiency of starting charging. Therefore, the connection of the grounding plug PE and the grounding socket PE is prior to the connection of the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2, which is conducive to the accurate judgment of the liquid cooling device on the connection state of the liquid cooling plug and the liquid cooling socket, can improve the correctness of the liquid cooling device in judging the connection state of the liquid cooling plug and the liquid cooling socket, and can further ensure the normal operation of the electric vehicle for high-power charging. Moreover, the time length of starting charging can be reduced and the efficiency of starting charging can be improved.

[0187] In an embodiment, referring to the above Figure 6 The grounding socket 323c is used to connect the grounding plug of the liquid cooling gun. The grounding socket 323c is the grounding socket PE in the following.

[0188] The distance between one end of the grounding socket PE and the bottom plate 3211 is less than the distance between one end of the liquid cooling socket 322 and the bottom plate 3211, and the distance between one end of the grounding socket PE and the bottom plate 3211 is greater than the distance between one end of the connection confirmation socket 323a and the bottom plate 3211. Alternatively, the distance between one end of the grounding socket PE and the end surface of the accommodating cavity away from the bottom plate 3211 is greater than the distance between one end of the liquid cooling socket 322 and the end surface of the accommodating cavity away from the bottom plate 3211, and the distance between one end of the grounding socket PE and the end surface of the accommodating cavity away from the bottom plate 3211 is less than the distance between one end of the connection confirmation socket 323a and the end surface of the accommodating cavity away from the bottom plate 3211. One end of the grounding socket PE protrudes out of the shell.

[0189] ReferenceFigure 14 The distance between one end of the grounding socket PE and the bottom plate 3211 is D4, the distance between one end of the liquid cooling socket 322 and the bottom plate 3211 is D0, the distance between one end of the connection confirmation socket 323a and the bottom plate 3211 is D1 and D2, and D4 < D0, D4 > D2, and D4 > D1. The distance between one end of the grounding socket PE and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is d4, the distance between one end of the liquid cooling socket 322 and the end surface of the accommodating cavity away from the bottom plate 3211 is d0, the distance between one end of the connection confirmation socket 323a and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is d1 and d2, and d4 > d0, d4 < d1, and d4 < d2.

[0190] In the embodiment of the present application, since D4 < D0, D4 > D2, and D4 > D1, during the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the liquid cooling plug 312 is first connected with the liquid cooling socket 322, the grounding plug PE is then connected with the grounding socket PE, and finally the connection confirmation plug CC1 and CC2 are connected with the connection confirmation socket CC1 and CC2. This design is conducive to the accurate judgment of the connection state of the liquid cooling plug 312 and the liquid cooling socket 322 by the electric vehicle according to the connection confirmation plug CC1 and CC2 and the connection confirmation socket CC1 and CC2, which can improve the correctness of the electric vehicle in judging the connection state of the liquid cooling plug and the liquid cooling socket, and further ensure the normal operation of the electric vehicle in high-power charging.

[0191] The reason is that if the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2 are connected first, and the grounding plug PE and the grounding socket PE are connected later, when the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2 have been connected and the grounding plug PE and the grounding socket PE have not been connected, the connection confirmation plug CC1, CC2, the connection confirmation socket CC1, CC2, and the connection confirmation circuit connected by the connection confirmation plug CC1, CC2, and the connection confirmation circuit connected by the connection confirmation socket CC1, CC2 do not form a path, the voltage of the detection point on the connection confirmation circuit does not change, and the electric vehicle believes that the liquid cooling plug and the liquid cooling socket are not successfully connected, but in fact the liquid cooling plug and the liquid cooling socket have been successfully connected, resulting in a misjudgment of the electric vehicle on the connection state of the liquid cooling plug and the liquid cooling socket, thereby affecting the normal operation of the electric vehicle for high-power charging. Until the grounding plug and the grounding socket are connected, the electric vehicle confirms the successful connection of the liquid cooling plug and the liquid cooling socket according to the change of the voltage of the detection point on the connection confirmation circuit, although the liquid cooling device can deliver cooling liquid to the electric vehicle, but in this process, the time length of the electric vehicle for confirming the connection state of the liquid cooling plug and the liquid cooling socket is increased, resulting in a decrease in the efficiency of starting charging. Therefore, the connection of the grounding plug PE and the grounding socket PE is prior to the connection of the connection confirmation plug CC1, CC2 and the connection confirmation socket CC1, CC2, which is conducive to the accurate judgment of the electric vehicle on the connection state of the liquid cooling plug and the liquid cooling socket, can improve the correctness of the electric vehicle in judging the connection state of the liquid cooling plug and the liquid cooling socket, and can further ensure the normal operation of the electric vehicle for high-power charging. Moreover, the time length for starting charging can be reduced and the efficiency of starting charging can be improved.

[0192] It can be understood that the distance design of the above-mentioned sockets and plugs is only illustrative, and can be flexibly adjusted according to actual production and design requirements. For example, in some other embodiments, the distance d1 between one end of the first connection confirmation socket (CC1 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211 is equal to the distance d2 between the end surface of the second connection confirmation socket (CC2 socket) and the end surface 3212 of the accommodating cavity away from the bottom plate 3211. The distance d1' between one end of the first connection confirmation plug (CC1 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111 is greater than the distance d2' between the end surface of the second connection confirmation plug (CC2 plug) and the end surface 3112 of the accommodating cavity away from the bottom plate 3111, i.e. d1 = d2, d1' > d2'. Based on the above design, during the connection of the liquid cooling gun 310 and the liquid cooling connector 320, the second connection confirmation socket and the second connection confirmation plug can also be connected first, and the first connection confirmation socket and the first connection confirmation plug can be connected later.

[0193] Alternatively, the distance d1 between the end face of the first connection confirmation socket (CC1 socket) and the end face 3212 of the accommodating cavity away from the bottom plate 3211 is greater than the distance d2 between the end face of the second connection confirmation socket (CC2 socket) and the end face 3212 of the accommodating cavity away from the bottom plate 3211. The distance d1' between the end face of the first connection confirmation plug (CC1 plug) and the end face 3112 of the accommodating cavity away from the bottom plate 3111 is equal to the distance d2' between the end face of the second connection confirmation plug (CC2 plug) and the end face 3112 of the accommodating cavity away from the bottom plate 3111, that is, d1>d2, d1'=d2'. Based on the above design, during the connection of the liquid cooling gun 310 and the liquid cooling connector 320, the second connection confirmation socket and the second connection confirmation plug can also be connected first, and the first connection confirmation socket and the first connection confirmation plug can be connected later.

[0194] Based on this, the length relationship between each plug and each socket is introduced above. In an embodiment, in order to facilitate the user to quickly and accurately insert the liquid cooling gun 310 into the liquid cooling connector 320, some guide structures can be arranged on the liquid cooling gun 310 and the liquid cooling connector 320. For details, please refer to the following.

[0195] In an embodiment, as shown in Figure 15 , the guide structure in the liquid cooling gun 310 can be a guide column 314. The bottom plate 3111 includes the guide column 314. The guide column 314 and the accommodating cavity are located on the same side of the bottom plate 3111. The guide column 314 is used for inserting a guide hole of the electric vehicle. The distance between the end of the guide column 314 away from the bottom plate 3111 and the bottom plate 3111 is greater than the distance between one end of the liquid cooling plug 312 and the bottom plate 3111, wherein the one end of the liquid cooling plug 312 is exposed to the shell 311.

[0196] In the embodiment of the present application, the guide column 314 of the liquid cooling gun 310 can assist the liquid cooling gun 310 to be quickly and accurately inserted into the liquid cooling connector 320. Specifically, referring to the above Figure 14 , the distance between the end of the guide column 314 away from the bottom plate 3111 and the bottom plate 3111 is D5', and the distance between the one end of the liquid cooling plug 312 and the bottom plate 3111 is D0', and D5'>D0', so that when the liquid cooling gun 310 is inserted into the liquid cooling connector 320, the guide column 314 of the liquid cooling gun 310 is connected with the liquid cooling connector 320 first. In other words, compared with other plugs of the liquid cooling gun 310, such as the liquid cooling plug 312 and the electric plug 313, the guide column 314 of the liquid cooling gun 310 is connected with the liquid cooling connector 320 first. In this way, the positions of the liquid cooling gun 310 and the liquid cooling connector 320 basically correspond, which is beneficial to the subsequent accurate insertion of the liquid cooling gun 310 and the liquid cooling connector 320 by the user.

[0197] In an embodiment, as shown in Figure 16As shown, the guide structure in the liquid cooling connector 320 can be a guide slot 324 or a guide hole 324, wherein the bottom plate 3211 of the liquid cooling connector 320 includes the guide slot 324 or the guide hole 324, and the guide slot 324 or the guide hole 324 is used to accommodate the guide column 314 of the liquid cooling gun 310.

[0198] In the embodiments of the present application, taking the guide hole 324 as an example, the guide hole 324 of the liquid cooling connector 320 can assist the liquid cooling gun 310 to be quickly and accurately plugged into the liquid cooling connector 320. Specifically, when the liquid cooling gun 310 is plugged into the liquid cooling connector 320, the guide hole 324 of the liquid cooling connector 320 is first connected with the guide column 314 of the liquid cooling gun 310, in other words, compared with other sockets of the liquid cooling connector 320, such as the liquid cooling socket 322, the electric socket 323, etc., the guide hole 324 of the liquid cooling connector 320 is first connected with the guide column 314 of the liquid cooling gun 310, so that the positions of the liquid cooling connector 320 and the liquid cooling gun 310 are basically corresponding, which is beneficial for the user to subsequently accurately plug the liquid cooling connector 320 and the liquid cooling gun 310.

[0199] It should be understood that the number of the guide column 314 of the liquid cooling gun 310 and the guide hole 324 of the liquid cooling connector 320 is equal, such as the number of the guide hole 324 in Figure 15 and the number of the guide column 314 in Figure 16 are both 2, and the positions of the guide hole 324 of the liquid cooling connector 320 and the guide column 314 of the liquid cooling gun 310 are corresponding, such as the guide hole 324 in Figure 15 and the guide column 314 in Figure 16 are symmetrical about the z direction, so that the accurate plugging of the liquid cooling gun 310 and the liquid cooling connector 320 can be realized.

[0200] It should also be understood that the number and position of the guide hole 324 shown in Figure 15 are only exemplary, and in actual applications, the number of the guide hole 324 can be more, or the guide hole 324 can be arranged at other positions. Similarly, the number and position of the guide column 314 shown in Figure 16 are only exemplary, and in actual applications, the number of the guide column 314 can be more, or the guide column 314 can be arranged at other positions, which are not limited.

[0201] In an embodiment, as shown in Figure 17As shown, the bottom plate 3211 further comprises a third protruding structure 3213, the third protruding structure 3213 and the accommodating cavity are located on the same side of the bottom plate 3211. The third protruding structure 3213 comprises two ends 3213a, 3213b oppositely arranged, one end 3213a of the two ends 3213a, 3213b of the third protruding structure 3213 abuts against the bottom plate 3211, and the third protruding structure 3213 further comprises a through hole penetrating through the third protruding structure 3213 along the arrangement direction of the two ends 3213a, 3213b of the third protruding structure 3213, and the side wall of the through hole and the part of the bottom plate 3211 corresponding to the third protruding structure 3213 together enclose a guide groove 324.

[0202] wherein, Figure 17 The schematic view shown is basically the same as the above Figure 16 The difference is that the guide groove 324 is formed inconsistently. In Figure 16 The schematic view shown, the guide groove 324 is formed by recessing from the surface of the bottom plate 3211 provided with the accommodating cavity to the inside of the bottom plate 3211, while in Figure 17 The schematic view shown, the third protruding structure 3213 is recessed towards the bottom plate 3211 to form the guide groove 324. In other words, in Figure 16 The guide groove 324 is only located in the bottom plate 3211, and in Figure 17 The guide groove 324 is located in the third protruding structure 3213 and the bottom plate 3211.

[0203] Based on Figure 17 The schematic view shown, the side wall of the through hole and the part of the bottom plate 3211 corresponding to the third protruding structure 3213 together enclose the guide groove 324, so that the thickness requirement of the bottom plate 3211 of the liquid cooling connector 320 is lower, that is, the bottom plate 3211 of the liquid cooling connector 320 can be designed as a thinner plate, so as to reduce the size of the liquid cooling connector 320, which is conducive to the integration of the liquid cooling connector 320 and facilitates the installation of the liquid cooling connector 320 on the electric vehicle.

[0204] In another embodiment, as Figure 18 The liquid cooling connector 320 further comprises a guide column 324, the guide column 324 and the accommodating cavity are located on the same side of the bottom plate 3211, and the guide column 324 is used for inserting the guide hole 314 of the liquid cooling gun 310. The distance between the end of the guide column 324 away from the bottom plate 3211 and the bottom plate 3211 is greater than the distance between one end of the liquid cooling socket 322 and the bottom plate 3211, wherein the one end of the liquid cooling socket 322 is exposed outside the shell.

[0205] In the embodiment of the present application, in the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the guide column 324 of the liquid cooling connector 320 is first connected with the liquid cooling gun 310, which is beneficial for the user to subsequently plug the liquid cooling connector 320 and the liquid cooling gun 310 accurately. Specifically, referring to the above Figure 14 , the distance between the end of the guide column 324 away from the bottom plate 3211 and the bottom plate 3211 is D5, the distance between one end of the liquid cooling socket 322 and the bottom plate 3211 is DO, and D5>DO, so that in the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the guide column 324 of the liquid cooling connector 320 is first connected with the liquid cooling gun 310, so that the positions of the liquid cooling connector 320 and the liquid cooling gun 310 basically correspond, which is beneficial for the user to subsequently plug the liquid cooling connector 320 and the liquid cooling gun 310 accurately.

[0206] As shown in Figure 19 , the bottom plate 3111 further comprises a guide slot 314 or a guide hole 314, which is used to accommodate the guide column 324 of the electric vehicle.

[0207] In the embodiment of the present application, taking the guide hole 314 as an example, in the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the guide hole 314 of the liquid cooling gun 310 is first connected with the liquid cooling connector 320, which is beneficial for the user to subsequently plug the liquid cooling gun 310 and the liquid cooling connector 320 accurately. Specifically, in the process of plugging the liquid cooling connector 320 by the liquid cooling gun 310, the guide hole 314 of the liquid cooling gun 310 is first connected with the guide column 324 of the liquid cooling connector 320, so that the positions of the liquid cooling gun 310 and the liquid cooling connector 320 basically correspond, which is beneficial for the user to subsequently plug the liquid cooling gun 310 and the liquid cooling connector 320 accurately.

[0208] Similarly, the number of the guide hole 314 of the liquid cooling gun 310 and the guide column 324 of the liquid cooling connector 320 is equal, such as the number of the guide column 324 in Figure 18 and the number of the guide hole 314 in Figure 19 are both 2, and the positions of the guide hole 314 of the liquid cooling gun 310 and the guide column 324 of the liquid cooling connector 320 correspond, such as the guide hole 314 in Figure 19 and the guide column 324 in Figure 18 are symmetrical about the z direction, so that the liquid cooling gun 310 and the liquid cooling connector 320 can be plugged accurately.

[0209] It should also be understood that Figure 18 the number and position of the guide column 324 shown in the above are only exemplary, and in actual application, the number of the guide column 324 can be more, or the guide column 324 can be arranged at other positions. Correspondingly, Figure 19The number and location of the guide holes 314 shown are merely exemplary. In actual applications, the number of guide holes 314 can be greater, or the guide holes 314 can be located in other positions without limitation.

[0210] In one embodiment, such as Figure 20 As shown, the base plate 3111 also includes a first protrusion structure 3113, which is located on the same side of the base plate 3111. The first protrusion structure 3113 includes two oppositely arranged ends 3113a and 3113b. One end 3113a of the two ends 3113a and 3113b of the first protrusion structure 3113 abuts against the base plate 3111. The first protrusion structure 3113 also includes a through hole, which penetrates the first protrusion structure 3113 along the direction in which the two ends 3113a and 3113b of the first protrusion structure 3113 are arranged. The sidewall of the through hole and the portion of the base plate 3111 corresponding to the first protrusion structure 3113 together form a guide groove 314.

[0211] in, Figure 20 The schematic diagram shown is the same as the one described above. Figure 19 The schematic diagrams shown are basically the same, the difference being that the formation of the guide groove 314 is different. Figure 19 In the schematic diagram shown, a guide groove 314 is formed by recessing from the surface of the base plate 3111 where the receiving cavity is provided into the base plate 3111, while... Figure 20 In the schematic diagram shown, the first protruding structure 3113 is recessed towards the base plate 3111 to form a guide groove 314. In other words, in Figure 19 In the middle, the guide groove 314 is only located in the base plate 3111, in Figure 20 In the middle, the guide groove 314 is located between the first protrusion structure 3113 and the bottom plate 3111.

[0212] based on Figure 20 As shown in the schematic diagram, the sidewall of the through hole and the portion of the base plate 3111 corresponding to the first protrusion structure 3113 together form a guide groove 314. This reduces the thickness requirement of the base plate 3111 of the liquid cooling gun 310, meaning that the base plate 3111 of the liquid cooling gun 310 can be designed as a thinner plate, which can reduce the weight of the liquid cooling gun 310 and make it easier for users to insert the liquid cooling gun 310 into the liquid cooling connector 320, thus improving the user experience.

[0213] The following text combines Figure 21 The structure of the power handle of the liquid-cooled gun 310 and the two protruding structures of the liquid-cooled connector 320 are described.

[0214] In an embodiment, the liquid-cooled gun 310 further comprises a power-assisted handle structure 315, which is arranged around a part of the outer periphery of the shell 311, and two ends 3151, 3152 of the power-assisted handle structure 315 are rotationally connected with the shell 311 (only one end 3151 is shown in the figure, and the other end 3152 is not shown).

[0215] In the application embodiment, each guide rail structure arranged along the arrangement direction of the two ends 3151, 3152 of the power-assisted handle structure 315 penetrates one end of the two ends, and the opening of each guide rail structure faces away from the liquid-cooled gun line of the liquid-cooled gun 310. Specifically, the guide rail structure 3151a arranged along the arrangement direction of the two ends 3151, 3152 of the power-assisted handle structure 315 penetrates one end 3151, and the guide rail structure 3152a arranged along the arrangement direction of the two ends 3151, 3152 of the power-assisted handle structure 315 penetrates the other end 3152. Moreover, the openings of the guide rail structure 3151a and the guide rail structure 3152a both face away from the liquid-cooled gun line of the liquid-cooled gun 310, that is, the openings of the two guide rail structures 3151a, 3152a both face the electric vehicle.

[0216] In an embodiment, the liquid-cooled connector 320 further comprises a fourth protruding structure 325 arranged around the accommodating cavity. The fourth protruding structure 325 comprises two oppositely arranged side walls in a direction perpendicular to the direction of gravity, and each side wall comprises a fifth protruding structure, such as the fifth protruding structures 325a, 325b (only one fifth protruding structure 325a is shown in the figure, and the other fifth protruding structure 325b is not shown), each fifth protruding structure is protrudingly arranged on the corresponding side wall in a direction perpendicular to the direction of gravity.

[0217] In the application embodiment, the user can hold the power-assisted handle structure 315 and rotate it counterclockwise or instantaneously, so that the power-assisted handle structure 315 rotates around the shell 311. During the rotation of the power-assisted handle structure 315 around the shell 311, the liquid-cooled gun 310 moves towards the liquid-cooled connector 320, that is, the liquid-cooled gun 310 moves towards the liquid-cooled connector 320 along the arrow direction of the dashed line in the figure, which can make the plugging of the liquid-cooled gun 310 and the liquid-cooled connector 320 more convenient, save the user's strength for plugging the liquid-cooled gun 310 into the liquid-cooled connector 320, and improve the user experience.

[0218] In the process that the liquid-cooled gun 310 moves towards the liquid-cooled connector 320 along the direction of the arrow shown by the dotted line in the figure, the two fifth protruding structures 325a, 325b of the liquid-cooled connector 320 respectively slide along the corresponding guide rail structures, such as the fifth protruding structure 325a slides along the guide rail structure 3151a and the fifth protruding structure 325b slides along the guide rail structure 3152a. When the plug of the liquid-cooled gun 310 is connected with the corresponding socket of the liquid-cooled connector 320, the two fifth protruding structures 325a, 325b respectively reach the bottom of the guide rail structure 3151a and the guide rail structure 3152a.

[0219] It should be understood that the shape of the power-assisted handle structure shown in the figure is only a schematic diagram, and other shapes of the power-assisted handle structure are not excluded. The general principle is that as long as the user rotates the power-assisted handle structure 315, the power-assisted handle structure 315 which moves the liquid-cooled gun 310 in the direction along the x direction towards the liquid-cooled connector 320 can be applied to the present application.

[0220] In specific implementation, the user holding part in the power-assisted handle structure 315 can be a strip-shaped structure, and the holding part can be provided with a groove to match the shape of a human hand, so as to be conveniently and stably held. In actual application, the power-assisted handle structure 315 can be rotated relative to the liquid-cooled gun 310 within a certain angle range, so as to adjust the power-assisted angle, so that the plug-in of the liquid-cooled gun 310 and the liquid-cooled connector 320 is more convenient. In actual use, the user can hold the holding part to apply a force to the liquid-cooled gun 310, such as rotating the holding part upward against the direction of rotation or rotating the holding part downward clockwise, so as to plug in the liquid-cooled gun 310 and the liquid-cooled connector 320.

[0221] In one embodiment, as shown in Figure 22 The liquid-cooled gun 310 further comprises a hooking piece 316, which is arranged side by side with the power-assisted handle structure 315 along the direction in which the two ends of the power-assisted handle structure 315 are arranged, and the hooking piece 316 is rotationally connected with the power-assisted handle structure 315. The hooking piece 316 comprises a bent portion 316a, which is bent towards the direction in which the two rail surfaces 3151a1, 3151a2 which are oppositely arranged relative to the guide rail structure 3151a are arranged.

[0222] In the embodiment of the present application, the hooking member 316 is rotationally connected with the power handle structure 315, and rotates clockwise or counterclockwise relative to the power handle structure 315. Moreover, the sum of the length of the hooking member 316 and the length of the guide rail structure 3151a along the direction in which the two ends of the power handle structure 315 are arranged is less than the length of the fifth protruding structure 325a of the liquid cooling connector 320, that is, the sum of the length of the hooking member 316 and the length of the guide rail structure 3151a along the y direction shown in the figure is less than the length of the fifth protruding structure 325a of the liquid cooling connector 320. In this way, when the fifth protruding structure 325a of the liquid cooling connector 320 reaches the bottom of the guide rail structure 3151a, the bent portion 316a of the hooking member 316 can hook the fifth protruding structure 325a of the liquid cooling connector 320, so that the relative position of the liquid cooling gun 310 and the liquid cooling connector 320 can be prevented from moving.

[0223] Specifically, in the process in which the liquid cooling gun 310 moves towards the liquid cooling connector 320, the two fifth protruding structures 325a and 325b of the liquid cooling connector 320 can slide along the corresponding guide rail structures respectively, and when the fifth protruding structures 325a and 325b contact the bent portion 316a of the hooking member 316, the contact surface applies a moment around the rotation shaft 3161 in the clockwise direction to the hooking member 316, so that the hooking member 316 can rotate in the clockwise direction, and thus the two fifth protruding structures 325a and 325b can slide along the corresponding guide rail structures respectively. When the plug of the liquid cooling gun 310 is connected with the corresponding socket of the liquid cooling connector 320, the two fifth protruding structures 325a and 325b respectively reach the bottom of the guide rail structure 3151a and the guide rail structure 3152a. When the fifth protruding structures 325a and 325b respectively reach the bottom of the corresponding guide rail structures, the moment in the clockwise direction applied to the bent portion 316a of the hooking member 316 disappears, and the hooking member 316 returns to the original position under the action of gravity, that is Figure 22 the position shown in the figure. Since the sum of the length of the hooking member 316 and the length of the guide rail structure 3151a along the y direction is less than the length of the fifth protruding structure 325a of the liquid cooling connector 320, the fifth protruding structure 325a is equivalent to being hooked by the hooking member 316, so that the hooking member 316 locks the fifth protruding structure 325a at the bottom of the guide rail structure 3151a, and thus the relative position of the liquid cooling gun 310 and the liquid cooling connector 320 in the x direction is fixed. At this time, even if the user accidentally touches the liquid cooling gun 310, the liquid cooling gun 310 will not produce relative displacement in the x direction with the liquid cooling connector 320, so that the movement of the relative position of the liquid cooling gun 310 and the liquid cooling connector 320 caused by the accidental touch of the user to the liquid cooling gun 310 can be prevented, and thus the smooth delivery of the cooling liquid can be ensured, and further the normal operation of the high-power charging of the electric vehicle can be ensured.

[0224] When it is needed to pull the liquid-cooled gun 310 out of the liquid-cooled connector 320, the user can move the bent part 316a of the hooking part 316 upward. In actual use, the user can touch the other end of the hooking part 316 which does not include the bent part 316a and move the other end downward, so that the end of the hooking part 316 including the bent part 316a is lifted upward. In this way, the hooking part 316 cannot hook the fifth protruding structure 325a, which is equivalent to releasing the locking between the fifth protruding structure 325a and the guide rail structure 3151a, so that the liquid-cooled gun 310 can be smoothly pulled out of the liquid-cooled connector 320.

[0225] In particular, the part of the hooking part 316 in contact with the rotating shaft 3161 can be provided as a spring mechanism to increase the locking force. In particular, when the clockwise moment applied to the bent part 316a of the hooking part 316 disappears, the spring mechanism can increase the locking force between the part of the hooking part 316 in contact with the rotating shaft 3161 and the rotating shaft 3161 after the hooking part 316 returns to the original position under the action of gravity, which is beneficial to the hooking part 316 locking the fifth protruding structure 325a at the bottom of the guide rail structure 3151a, and further beneficial to preventing the relative position of the liquid-cooled gun 310 and the liquid-cooled connector 320 from moving due to the user accidentally touching the liquid-cooled gun 310. Moreover, during the process of pulling out the liquid-cooled gun 310, when the user touches the other end of the hooking part 316 which does not include the bent part 316a and moves the other end downward, the spring mechanism can increase the locking force between the part of the hooking part 316 in contact with the rotating shaft 3161 and the rotating shaft 3161, which is beneficial to the smooth pulling out of the liquid-cooled gun 310.

[0226] In order to avoid the liquid-cooled gun 310 being pulled out during charging, the liquid-cooled gun 310 and the liquid-cooled connector 320 can be provided with corresponding structures, such as Figure 23 as shown.

[0227] In one embodiment, as shown in Figure 23 , one end 3151 of the two ends of the power-assisted handle structure 315 away from the end face of the shell 311 includes a second protruding structure 317, i.e. the second protruding structure 317 is protruded along the y direction on the power-assisted handle structure 315, and the second protruding structure 317 rotates with the power-assisted handle structure 315.

[0228] Further, the second protruding structure 317 comprises a through hole 317a, the through hole 317a extends through the second protruding structure 317 along a direction perpendicular to the direction in which the second protruding structure 317 protrudes, that is, the through hole 317a extends through the second protruding structure 317 along the x direction or the z direction. Specifically, when the power-assisted handle structure 315 rotates relative to the shell 311 to the opening of the through hole 317a facing the x direction, based on this case, the through hole 317a extends through the second protruding structure 317 along the x direction. When the power-assisted handle structure 315 rotates relative to the shell 311 to the opening of the through hole 317a facing the z direction, based on this case, the through hole 317a extends through the second protruding structure 317 along the z direction.

[0229] In an embodiment, as shown in Figure 23 The liquid cooling connector 320 further comprises a column structure 326, the column structure 326 is located on the side of the bottom plate 3211 away from the fourth protruding structure 325, that is, the column structure 326 and the fourth protruding structure 325 are located on different sides of the bottom plate 3211.

[0230] Further, the bottom plate 3211 further comprises a through hole 327, along the direction in which the through hole 327 extends, the projection of the column structure 326 and the through hole 327 coincide. That is, along the x direction, the projection of the column structure 326 and the through hole 327 coincide. In addition, the column structure 326 is further connected with a driving member 3261, the driving member 3261 is used to drive the column structure 326 to move along the direction in which the through hole 327 extends, so that the column structure 326 passes through the through hole 327.

[0231] In the embodiment of the application, during the movement of the liquid cooling gun 310 towards the liquid cooling connector 320, the two fifth protruding structures 325a, 325b of the liquid cooling connector 320 respectively slide along the corresponding guide rail structures until reaching the bottom of the corresponding guide rail structures. Further, the fifth protruding structure 325a is hooked by the hooking member 316, so that the relative position of the liquid cooling gun 310 and the liquid cooling connector 320 is fixed along the x direction. Further, the driving member 3261 drives the column structure 326 to move along the direction in which the through hole 327 extends, so that the column structure 326 passes through the through hole 327, and then passes through the through hole 317a of the liquid cooling gun 310, so as to lock the connection between the liquid cooling gun 310 and the liquid cooling connector 320, thereby preventing the charging abnormality caused by the liquid cooling gun 310 being mistakenly pulled out during charging, and ensuring the normal charging of the electric vehicle.

[0232] This is because, if the column structure 326, the through hole 317a is not designed, the user of the electric vehicle can easily pull out the liquid cooling gun 310 from the liquid cooling connector 320 by rotating the power handle structure 315 during the process of charging the electric vehicle by the charging pile, resulting in that the cooling liquid cannot be delivered to the electric vehicle, which is not conducive to the normal charging of the electric vehicle with high power. In the embodiment of the present application, the charging pile will start charging the electric vehicle only when the liquid cooling device and the electric vehicle confirm that each plug and the corresponding socket are successfully connected, and the driving part 3261 can drive the column structure 326 to move in the direction of extending through the through hole 327 to lock the connection between the liquid cooling gun 310 and the liquid cooling connector 320 when the charging pile starts charging the electric vehicle. When it is needed to pull out the liquid cooling gun 310 from the liquid cooling connector 320, the user needs to rotate the power handle structure 315, however, since the column structure 326 passes through the through hole 317a of the liquid cooling gun 310 at this time, the user is difficult to rotate the power handle structure 315, so that the abnormal charging caused by the liquid cooling gun 310 being mistakenly pulled out during the charging process can be prevented, thereby ensuring the normal charging of the electric vehicle.

[0233] It should be noted that, during the charging process of the electric vehicle, forcibly rotating the power handle structure 315 can easily cause damage to the column structure 326 and the through hole 317a, and further cause damage to the liquid cooling connector 320 and the liquid cooling gun 310, thereby affecting the normal charging of the electric vehicle. Therefore, the normal pulling out process of the liquid cooling gun 310 from the liquid cooling connector 320 is that, when the electric vehicle completes charging, the charging pile can send a charging completion instruction to the electric vehicle, and in response to the electric vehicle receiving the charging completion instruction from the charging pile, the driving part 3261 drives the column structure 326 to move in the direction of extending through the through hole 327, so that the column structure 326 retreats into the liquid cooling connector 320, and then the user can control the upward movement of the bent part 316a of the hooking part 316 and rotate the power handle structure, so that the two fifth protruding structures 325a, 325b exit from the guide rail structure 3151a and the guide rail structure 3152a respectively, thereby realizing the safe pulling out of the liquid cooling gun 310 from the liquid cooling connector 320.

[0234] It should be understood that, in order to facilitate the distinction between the through hole 327 and the column structure 326, the through hole 327 and the column structure 326 are shown in the figure. In the actual scene, when the liquid cooling connector 320 is not connected to the liquid cooling gun 310, the column structure 326 is located in the through hole 327, that is, along the y direction, the projections of the column structure 326 and the through hole 327 coincide.

[0235] In order to better protect the liquid cooling gun 310 and the liquid cooling connector 320, as Figure 24As shown, in an embodiment, the liquid cooling gun 310 further comprises a dustproof cover 318, which is used to cover the interface of the liquid cooling gun 310. As shown in the figure, the dustproof cover 318 is connected to the liquid cooling gun 310 through a chain. Figure 25 As shown, in an embodiment, the liquid cooling connector 320 further comprises a dustproof cover 328, which is used to cover the interface of the liquid cooling connector 320.

[0236] In an embodiment, when the liquid cooling gun 310 is not plugged with the liquid cooling connector 320, the user can cover the interface of the liquid cooling gun 310 with the dustproof cover 318, so as to prevent dust, rainwater, etc. from entering the liquid cooling gun 310, thereby protecting the liquid cooling gun 310. Similarly, when the liquid cooling connector 320 is not plugged with the liquid cooling gun 310, the user can cover the interface of the liquid cooling connector 320 with the dustproof cover 328, so as to prevent dust, rainwater, etc. from entering the liquid cooling connector 320, thereby protecting the liquid cooling connector 320.

[0237] In addition, Figure 24 As shown, the dustproof cover further comprises a plurality of smaller protective covers, such as the protective covers 318a, 318b, 318c shown in the figure, wherein the protective covers 318a, 318b are used to cover the interface of the accommodating cavity in which the electric plug 313 is located, for further protecting the electric plug 313. The protective cover 318c is used to cover the interface of the accommodating cavity in which the liquid cooling plug 312 is located, for further protecting the liquid cooling plug 312.

[0238] Figure 25 As shown, the dustproof cover further comprises a plurality of smaller protective covers, such as the protective covers 328a, 328b, 328c, 328d shown in the figure, wherein the protective covers 328a, 328b are used to cover the interface of the accommodating cavity in which the electric socket 323 is located, for further protecting the electric socket 323. The protective cover 328c is used to cover the interface of the accommodating cavity in which the liquid inlet socket 322a is located, for further protecting the liquid inlet socket 322a. The protective cover 328d is used to cover the interface of the accommodating cavity in which the liquid outlet socket 322b is located, for further protecting the liquid outlet socket 322b.

[0239] It should be understood that for the connection between the liquid cooling gun 310 and the dustproof cover 318, a variety of ways can be adopted, such as connection through a chain, or connection through a hinge, etc. For the connection between the liquid cooling connector 320 and the dustproof cover 328, a variety of ways can also be adopted, such as connection through a chain, or connection through a hinge, etc. Among them, Figure 24 As shown, the liquid cooling gun 310 and the dustproof cover 318 are connected through a chain, Figure 25 As shown, the liquid cooling connector 320 and the dustproof cover 328 are connected through a hinge.

[0240] In addition, the application further provides a liquid cooling device, which comprises a liquid cooling unit and the liquid cooling gun 310 in any of the above embodiments, the liquid cooling unit comprises cooling liquid, and the liquid cooling gun is used for delivering the cooling liquid of the liquid cooling unit to the electric vehicle.

[0241] The application provides an electric vehicle, which comprises a power battery and the liquid cooling connector 320 in any of the above embodiments, and the liquid cooling connector 320 is used for delivering the cooling liquid from the liquid cooling device to the power battery.

[0242] In the embodiments of the application, when the electric vehicle is subjected to high-power charging, the liquid cooling unit can deliver the cooling liquid to the power battery of the electric vehicle through the liquid cooling gun 310 and the liquid cooling connector 320, the cooling liquid can take away the heat generated in the charging process of the power battery, the purpose of reducing the temperature of the power battery is achieved, and the normal charging of the power battery is ensured.

[0243] In the embodiments of the application, when the electric vehicle is subjected to high-power charging, the liquid cooling unit can deliver the cooling liquid to the power battery of the electric vehicle through the liquid cooling gun 310 and the liquid cooling connector 320, the cooling liquid can take away the heat generated in the charging process of the power battery, the purpose of reducing the temperature of the power battery is achieved, and the normal charging of the power battery is ensured.

[0244] The above is only a specific implementation of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A liquid cooled firearm, characterized by, The liquid cooling gun is used in connection with an electric vehicle, and comprises a housing, a liquid cooling plug and an electric plug, the housing comprises a bottom plate, the bottom plate comprises a plurality of insertion holes, each of the liquid cooling plug and the electric plug passes through the bottom plate through different insertion holes; The liquid cooling plug comprises a liquid supply plug and a liquid return plug, the liquid supply plug is used to deliver cooling liquid of a liquid cooling unit to the electric vehicle, and the liquid return plug is used to deliver cooling liquid output by the electric vehicle to the liquid cooling unit; The electric plug comprises a connection confirmation plug, the connection confirmation plug is used to connect a connection confirmation socket of the electric vehicle, and is also used to connect a connection confirmation circuit, voltage of a detection point in the connection confirmation circuit is used to indicate a connection state of the liquid cooling gun and the electric vehicle; The bottom plate comprises a plurality of spaced accommodating cavities, and the liquid cooling plug and the electric plug are located in different accommodating cavities.

2. The liquid cooled firearm of claim 1, wherein, Projections of the liquid cooling plug and the electric plug in a gravity direction do not coincide.

3. The liquid cooled firearm of claim 1, wherein, A distance between one end of the liquid cooling plug and the bottom plate is greater than a distance between one end of the connection confirmation plug and the bottom plate; or, A distance between one end of the liquid cooling plug and an end face of the accommodating cavity away from the bottom plate is less than a distance between one end of the connection confirmation plug and the end face of the accommodating cavity away from the bottom plate; Wherein, one end of the liquid cooling plug and one end of the connection confirmation plug are exposed to the housing.

4. The liquid cooled firearm of claim 3, wherein, The connection confirmation plug comprises a first connection confirmation plug and a second connection confirmation plug; A distance between one end of the first connection confirmation plug and the bottom plate is less than a distance between one end of the second connection confirmation plug and the bottom plate; Or, A distance between one end of the first connection confirmation plug and an end face of the accommodating cavity away from the bottom plate is greater than a distance between one end of the second connection confirmation plug and the end face of the accommodating cavity away from the bottom plate.

5. The liquid cooled firearm of claim 4, wherein, The electric plug further comprises a communication plug, the communication plug is used to connect a communication socket of the electric vehicle; A distance between one end of the communication plug and the bottom plate is greater than a distance between one end of the first connection confirmation plug and the bottom plate, and is less than a distance between one end of the second connection confirmation plug and the bottom plate; Or, A distance between one end of the communication plug and an end face of the accommodating cavity away from the bottom plate is less than a distance between one end of the first connection confirmation plug and the end face of the accommodating cavity away from the bottom plate, and is greater than a distance between one end of the second connection confirmation plug and the end face of the accommodating cavity away from the bottom plate; Wherein, one end of the communication plug is exposed to the housing.

6. The liquid cooled firearm of any of claims 3-5, wherein, The electric plug further comprises a grounding plug, the grounding plug is used to connect a grounding socket of the electric vehicle; The distance between one end of the grounding plug and the bottom plate is less than the distance between one end of the liquid cooling plug and the bottom plate, and the distance between one end of the grounding plug and the bottom plate is greater than the distance between one end of the connection confirmation plug and the bottom plate. Or, The distance between one end of the grounding plug and the end face of the accommodating cavity away from the bottom plate is greater than the distance between one end of the liquid cooling plug and the end face of the accommodating cavity away from the bottom plate, and the distance between one end of the grounding plug and the end face of the accommodating cavity away from the bottom plate is less than the distance between one end of the connection confirmation plug and the end face of the accommodating cavity away from the bottom plate. Wherein, one end of the grounding plug is exposed to the shell.

7. The liquid cooled firearm of any of claims 1-5, wherein, The bottom plate further comprises a guide column, the guide column and the accommodating cavity are located on the same side of the bottom plate, and the guide column is used for inserting the guide hole of the electric vehicle. The distance between one end of the liquid cooling plug and the bottom plate is greater than the distance between one end of the grounding plug and the bottom plate, and one end of the liquid cooling plug is exposed to the shell.

8. The liquid cooled firearm of any of claims 1-5, wherein, The bottom plate further comprises a guide slot or a guide hole, and the guide slot or the guide hole is used for accommodating the guide column of the electric vehicle.

9. The liquid cooled firearm of claim 8, wherein, The bottom plate further comprises a first protruding structure, and the first protruding structure and the accommodating cavity are located on the same side of the bottom plate. The first protruding structure comprises two opposite ends, one of the two ends of the first protruding structure abuts against the bottom plate, the first protruding structure further comprises a through hole, the through hole penetrates the first protruding structure along the arrangement direction of the two ends of the first protruding structure, and the side wall of the through hole and the part of the bottom plate corresponding to the first protruding structure jointly form the guide slot.

10. The liquid cooled firearm of any one of claims 1-5, wherein, The liquid cooling gun further comprises a power-assisted handle structure, the power-assisted handle structure is arranged around part of the outer peripheral surface of the shell, and the two ends of the power-assisted handle structure are rotationally connected with the shell. Each of the two ends of the power-assisted handle structure is provided with a guide rail structure with one end open, each of the guide rail structures penetrates the end of one of the two ends along the arrangement direction of the two ends of the power-assisted handle structure, and the opening of each of the guide rail structures faces away from the direction of the liquid cooling gun line of the liquid cooling gun.

11. The liquid cooled firearm of claim 10, wherein, The liquid cooling gun further comprises a hooking member, the hooking member is arranged parallel to the power-assisted handle structure along the arrangement direction of the two ends of the power-assisted handle structure, and the hooking member is rotationally connected with the power-assisted handle structure. The hooking member comprises a bending portion, and the bending portion is bent towards the arrangement direction of the two rail surfaces of the guide rail structure.

12. The liquid cooled firearm of claim 10, wherein, One of the two ends of the power-assisted handle structure away from the end face of the shell comprises a second protruding structure, the second protruding structure comprises a through hole, and the through hole penetrates the second protruding structure along a direction perpendicular to the protruding direction of the second protruding structure.

13. A liquid-cooled connector, characterized by, The liquid cooling connector is used for connecting with the liquid cooling gun, the liquid cooling connector comprises a shell, a liquid cooling socket and an electric socket, the shell comprises a bottom plate, the bottom plate comprises a plurality of plug holes, the liquid cooling socket and the electric socket pass through the bottom plate through different plug holes. The liquid cooling socket comprises a liquid inlet socket and a liquid outlet socket, the liquid inlet socket is used for conveying the cooling liquid output by the liquid cooling gun to the component of the electric vehicle to be cooled, and the liquid outlet socket is used for conveying the cooling liquid passing through the component to be cooled to the liquid cooling gun; The electric socket comprises a connection confirmation socket, the connection confirmation socket is used for connecting the connection confirmation plug of the liquid cooling gun, and the connection confirmation socket is also used for connecting a connection confirmation circuit, the voltage of a detection point in the connection confirmation circuit is used for indicating the connection state of the electric vehicle and the liquid cooling gun; The bottom plate comprises a plurality of spaced accommodating cavities, and the liquid cooling socket and the electric socket are located in different accommodating cavities.

14. The liquid-cooled connector of claim 13, wherein, The projection of the liquid cooling socket and the projection of the electric socket do not coincide in the direction of gravity.

15. The liquid-cooled connector of claim 14, wherein, The distance between one end of the liquid cooling socket and the bottom plate is greater than the distance between one end of the connection confirmation socket and the bottom plate; or, The distance between one end of the liquid cooling socket and the end face of the accommodating cavity away from the bottom plate is less than the distance between one end of the connection confirmation socket and the end face of the accommodating cavity away from the bottom plate; Wherein, one end of the liquid cooling socket and one end of the connection confirmation socket are exposed to the shell.

16. The liquid-cooled connector of claim 15, wherein, The connection confirmation socket comprises a first connection confirmation socket and a second connection confirmation socket; The distance between one end of the first connection confirmation socket and the bottom plate is less than the distance between one end of the second connection confirmation socket and the bottom plate; Or, The distance between one end of the first connection confirmation socket and the end face of the accommodating cavity away from the bottom plate is greater than the distance between one end of the second connection confirmation socket and the end face of the accommodating cavity away from the bottom plate.

17. The liquid-cooled connector of claim 16, wherein, The electric socket further comprises a communication socket, the communication socket is used for connecting the communication plug of the liquid cooling gun; The distance between one end of the communication socket and the bottom plate is equal to the distance between one end of the first connection confirmation socket and the bottom plate; Or, The distance between one end of the communication socket and the end face of the accommodating cavity away from the bottom plate is equal to the distance between one end of the first connection confirmation socket and the end face of the accommodating cavity away from the bottom plate; Wherein, one end of the communication socket is exposed to the shell.

18. The liquid-cooled connector of any of claims 13-17, wherein, The electric socket further comprises a grounding socket, the grounding socket is used for connecting the grounding plug of the liquid cooling gun; The distance between one end of the grounding socket and the bottom plate is less than the distance between one end of the liquid cooling socket and the bottom plate, and the distance between one end of the grounding socket and the bottom plate is greater than the distance between one end of the connection confirmation socket and the bottom plate; Or, The distance between one end of the grounding socket and the end face of the accommodating cavity away from the bottom plate is greater than the distance between one end of the liquid cooling socket and the end face of the accommodating cavity away from the bottom plate, and the distance between one end of the grounding socket and the end face of the accommodating cavity away from the bottom plate is less than the distance between one end of the connection confirmation socket and the end face of the accommodating cavity away from the bottom plate; Wherein, one end of the grounding socket is exposed to the shell.

19. The liquid-cooled connector of any one of claims 13-17, wherein, The liquid cooling connector further comprises a guide post located on the same side of the bottom plate as the accommodating cavity, the guide post being used for inserting a guide hole of the liquid cooling gun; A distance between an end of the guide post away from the bottom plate and the bottom plate is greater than a distance between an end of the liquid cooling socket and the bottom plate, wherein the end of the liquid cooling socket is exposed outside the shell.

20. The liquid-cooled connector of any one of claims 13-17, wherein, The bottom plate further comprises a guide slot or a guide hole, the guide slot or the guide hole being used for accommodating a guide post of the liquid cooling gun.

21. The liquid-cooled connector of claim 20, wherein, The bottom plate further comprises a third protruding structure, the third protruding structure and the accommodating cavity being located on the same side of the bottom plate; The third protruding structure comprises two ends arranged oppositely, one of the two ends of the third protruding structure abutting against the bottom plate, the third protruding structure further comprising a through hole penetrating through the third protruding structure along a direction in which the two ends of the third protruding structure are arranged, a side wall of the through hole and a portion of the bottom plate corresponding to the third protruding structure jointly forming the guide slot.

22. The liquid-cooled connector of any one of claims 13-17, wherein, The liquid cooling connector further comprises a fourth protruding structure, the fourth protruding structure being arranged around the accommodating cavity; In a direction perpendicular to the direction of gravity, the fourth protruding structure comprises two side walls arranged oppositely, the two side walls respectively comprising a fifth protruding structure, each fifth protruding structure being protruded on the corresponding side wall in the direction perpendicular to the direction of gravity.

23. The liquid-cooled connector of claim 22, wherein, The liquid cooling connector further comprises a column structure, the column structure being located on a side of the bottom plate away from the fourth protruding structure; The bottom plate further comprises a through hole, in a direction along which the through hole extends, a projection of the column structure and the through hole being coincident; The column structure is further connected with a driving member, the driving member being used for driving the column structure to move in the direction along which the through hole extends, so that the column structure penetrates through the through hole.

24. A liquid cooling device, characterized by The liquid cooling device comprises a liquid cooling unit and the liquid cooling gun according to any one of claims 1 to 12, the liquid cooling unit comprising the cooling liquid, the liquid cooling gun being used for delivering the cooling liquid of the liquid cooling unit to an electric vehicle.

25. An electric vehicle characterized by comprising: The electric vehicle comprises a power battery and the liquid cooling connector according to any one of claims 13 to 23, the liquid cooling connector being used for delivering the cooling liquid from the liquid cooling device to the power battery.

Images