Charging device

Abstract

The embodiment of the utility model provides charging equipment, the charging equipment comprises a cabinet body, two charging guns and two first heat exchangers, the cabinet body is used for accommodating one end of each charging gun and the two first heat exchangers, and the other end of each charging gun is located outside the cabinet body. A liquid inlet of the liquid cooling channel and a liquid outlet of the liquid cooling channel in each charging gun are located at one end of the charging gun. The cabinet body comprises two first side plates which are oppositely arranged in the height direction perpendicular to the cabinet body, and the two charging guns and the two first heat exchangers are fixed to the two first side plates in a one-to-one correspondence mode. And each first heat exchanger is positioned below one end of the corresponding charging gun along the height direction of the cabinet body. Each first heat exchanger comprises two first cooling liquid channels, one first cooling liquid channel is used for exchanging heat with the other first cooling liquid channel, and a liquid inlet and a liquid outlet of the other first cooling liquid channel are correspondingly connected with a liquid outlet and a liquid inlet of the liquid cooling channel in the corresponding charging gun.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, and more particularly, to a charging device. BACKGROUND

[0002] With the increasing popularity of electric vehicles, the charging device as a supporting facility also develops rapidly. At present, in order to achieve the rapid power supply of "one second one kilometer" for electric vehicles, not only the overall power of the charging device is getting higher and higher, but also the number of charging guns configured in each charging terminal of the charging device is developed from one to two, so as to increase the charging power delivered by a single charging gun, and at the same time, the same electric vehicle can be charged by two charging guns of the same charging terminal at the same time, so as to achieve the super-charging of megawatt power level for the electric vehicle.

[0003] However, with the continuous increase of the charging power delivered by a single charging gun, the heat generated by each charging gun of the charging terminal during work will be greatly increased, and the heat dissipation capacity of the existing charging terminal is limited, which cannot well meet the heat dissipation demand of the two charging guns configured by itself. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a charging device, which is configured with two first heat exchangers to respectively perform liquid cooling heat dissipation for two charging guns located in the same cabinet, so as to not only improve the heat dissipation performance of the two charging guns, but also ensure that the heat dissipation processes of the two charging guns are independent of each other, thereby improving the reliability of heat dissipation for the two charging guns. Furthermore, it is conducive to meeting the heat dissipation demand of the two charging guns located in the same cabinet during high-power work, and ensuring the operation safety of the charging device.

[0005] In a first aspect, a charging device is provided, which includes a cabinet, two charging guns and two first heat exchangers. The cabinet is used to accommodate one end of each charging gun and the two first heat exchangers, and the other end of each charging gun is located outside the cabinet. The liquid inlet of the liquid cooling channel of each charging gun and the liquid outlet of the liquid cooling channel are located at one end of the charging gun. The cabinet includes two first side plates, which are arranged opposite to each other in the vertical direction of the height of the cabinet. The two charging guns and the two first heat exchangers are respectively fixed to the two first side plates one by one, and each first heat exchanger is located below the one end of the corresponding charging gun in the vertical direction of the height of the cabinet. Each first heat exchanger includes two first cooling liquid channels, one of which is used to exchange heat with the other. The liquid inlet of the other first cooling liquid channel is connected to the liquid outlet of the liquid cooling channel in the corresponding charging gun, and the liquid outlet of the other first cooling liquid channel is connected to the liquid inlet of the liquid cooling channel in the corresponding charging gun.

[0006] In the technical solution, the two first heat exchangers located inside the cabinet body can be connected with the liquid cooling channels in the two charging guns fixed to the cabinet body to form cooling circuits. In this way, the cooling liquid flowing through the liquid cooling channels of each charging gun can flow into the corresponding first heat exchanger through the formed cooling circuit after absorbing the heat generated by the wires in the charging gun. The first heat exchanger can adopt a liquid-liquid heat exchange mode to cool the cooling liquid flowing out of the liquid cooling channel, thereby realizing liquid cooling and heat dissipation of the wires in the charging gun. Compared with the traditional air cooling heat dissipation mode of a fan, the liquid cooling heat dissipation mode has higher efficiency in heat dissipation of the wires. Moreover, compared with the air-liquid heat exchange mode, the first heat exchanger adopts the liquid-liquid heat exchange mode to cool the cooling liquid flowing out of the liquid cooling channel, thereby further improving the heat dissipation efficiency of the wires.

[0007] In addition, since the liquid cooling and heat dissipation processes of the wires in the two charging guns by the two first heat exchangers are independently performed, the failure of one first heat exchanger can be prevented from affecting the normal liquid cooling and heat dissipation of the wires in the charging gun by the other first heat exchanger. In this way, the heat dissipation performance of the two charging guns located in the same cabinet body can be improved to meet the heat dissipation demand of the two charging guns located in the same cabinet body during high-power operation, thereby ensuring the operation safety of the charging equipment.

[0008] In an implementation manner, the cabinet body further includes two second side plates arranged oppositely, and the arrangement directions of the two second side plates are perpendicular to the height direction of the cabinet body and the arrangement directions of the two first side plates. The charging equipment further includes a second heat exchanger located inside the cabinet body and fixed to one second side plate, and the second heat exchanger is located below one end of the two charging guns in the height direction of the cabinet body. The second heat exchanger includes a second cooling liquid channel and a gas channel, the second cooling liquid channel is used for heat exchange with the gas channel, and the air inlet of the gas channel and the air outlet of the gas channel are in communication with the environment inside the cabinet body.

[0009] In the technical solution, when the gas inside the cabinet body circulates in the gas channel, the cooling liquid flowing through the second cooling liquid channel can cool the gas in the gas channel. In turn, the cooled gas can perform air cooling heat dissipation on the electronic devices located inside the cabinet body. Compared with the natural cooling mode of the gas inside the cabinet body, the second heat exchanger has higher efficiency in cooling the gas inside the cabinet body, thereby improving the efficiency of air cooling heat dissipation on the electronic devices inside the cabinet body.

[0010] In an implementation, the charging device further comprises a third heat exchanger and two multi-way valves, and the third heat exchanger is located outside the cabinet. One multi-way valve is used to guide the passage between the outlet of the third cooling liquid passage in the third heat exchanger and at least one of the following: the inlet of one first cooling liquid passage of each first heat exchanger, the inlet of the second cooling liquid passage. The other multi-way valve is used to guide the passage between the inlet of the third cooling liquid passage and at least one of the following: the outlet of one first cooling liquid passage of each first heat exchanger, the outlet of the second cooling liquid passage.

[0011] In the above technical solution, the third cooling liquid passage in the third heat exchanger can be connected with the first cooling liquid passages in the two first heat exchangers and the second cooling liquid passage in the second heat exchanger respectively through the two multi-way valves to form cooling circuits. In this way, in actual application, by adjusting the on-off state between different valve ports in each multi-way valve, a cooling circuit formed by the third cooling liquid passage and any one of the first cooling liquid passages of the two first heat exchangers and the second cooling liquid passage of the second heat exchanger can be guided to pass through, so that the third heat exchanger dissipates heat from the cooling liquid flowing through any one of the first cooling liquid passages of the two first heat exchangers and the second cooling liquid passage of the second heat exchanger. Further, it can ensure that the two first heat exchangers respectively perform liquid cooling heat dissipation on the conductive lines in the two charging guns, and the second heat exchanger continuously operates to cool the gas inside the cabinet.

[0012] In an implementation, the cabinet further comprises a bottom plate connected to the lower end of the two first side plates along the height direction of the cabinet, and the bottom plate comprises an opening. The two multi-way valves are located inside the cabinet, and the charging device further comprises an inlet pipe and an outlet pipe. Four valve ports of one multi-way valve are connected to the outlet port of the inlet pipe, the inlet ports of the first cooling liquid passages of the two first heat exchangers, and the inlet port of the second cooling liquid passage one by one. The inlet port of the inlet pipe penetrates through the opening and extends out of the cabinet, and the inlet port of the inlet pipe is connected to the outlet port of the third cooling liquid passage. Four valve ports of the other multi-way valve are connected to the inlet port of the outlet pipe, the outlet ports of the first cooling liquid passages of the two first heat exchangers, and the outlet port of the second cooling liquid passage one by one. The outlet port of the outlet pipe penetrates through the opening and extends out of the cabinet, and the outlet port of the outlet pipe is connected to the inlet port of the third cooling liquid passage.

[0013] In the above technical solution, by arranging the two multi-way valves inside the cabinet, the third heat exchanger located outside the cabinet can be connected with the cabinet through an inlet pipe and an outlet pipe. Compared with the scheme of arranging the two multi-way valves outside the cabinet and connecting the two multi-way valves to the two first heat exchangers and the second heat exchanger inside the cabinet through three longer inlet pipes and three longer outlet pipes, the above scheme can reduce the complexity of the pipe connection between the third heat exchanger and the cabinet and reduce the use of longer pipes, thereby saving the cost of the charging device.

[0014] In an implementation, the cabinet body further comprises a bottom plate connected to the lower ends of the two first side plates along the height direction of the cabinet body, and the bottom plate comprises an opening. The two multi-way valves are located outside the cabinet body, and the charging device further comprises three liquid inlet pipes and three liquid outlet pipes. The four valve ports of one multi-way valve are connected to the liquid outlet of the third cooling liquid channel and the liquid inlets of the three liquid inlet pipes one by one, the liquid outlets of the three liquid inlet pipes extend into the cabinet body through the opening, and the liquid outlets of the three liquid inlet pipes are connected to the liquid inlets of the first cooling liquid channel and the second cooling liquid channel of the two first heat exchangers one by one. The four valve ports of the other multi-way valve are connected to the liquid inlet of the third cooling liquid channel and the liquid outlets of the three liquid outlet pipes one by one, the liquid inlets of the three liquid outlet pipes extend into the cabinet body through the opening, and the liquid inlets of the three liquid outlet pipes are connected to the liquid outlets of the first cooling liquid channel and the second cooling liquid channel of the two first heat exchangers one by one.

[0015] In the above technical solution, by arranging the two multi-way valves outside the cabinet body, the connection between each valve port of the multi-way valve and the liquid inlet pipe or the liquid outlet pipe is located outside the cabinet body. On the one hand, this can reduce the occupied space of the two multi-way valves and the liquid inlet pipes and the liquid outlet pipes connected thereto in the cabinet body, thereby facilitating the reduction of the overall size of the cabinet body. On the other hand, when a fault occurs between the two multi-way valves and the pipes and needs to be repaired, the operation space of the operator is not limited by the internal space of the cabinet body.

[0016] In an implementation, the second heat exchanger further comprises a first fan, and one second side plate, the gas channel and the first fan are arranged in sequence along the direction in which the two second side plates are arranged. The air inlet of the first fan faces the other second side plate, the air outlet of the first fan faces the air inlet of the gas channel, and the air outlet of the gas channel faces the one second side plate.

[0017] In the above technical solution, the first fan can drive the gas flowing into the gas channel to flow out of the gas channel more quickly, thereby enhancing the circulation of the gas in the cabinet body in the gas channel and ensuring the cooling effect of the second heat exchanger on the gas in the cabinet body.

[0018] In an implementation, the second heat exchanger further comprises a first fan, and one second side plate, the gas channel and the first fan are arranged in sequence along the direction in which the two second side plates are arranged. The air inlet of the first fan faces the other second side plate, the air outlet of the first fan faces the air inlet of the gas channel, and the air outlet of the gas channel faces the one second side plate.

[0019] In the technical solution, the first fan can drive the gas in the cabinet to flow into the gas passage more quickly, so as to strengthen the circulation of the gas in the cabinet in the gas passage, and ensure the cooling effect of the second heat exchanger on the gas in the cabinet.

[0020] In an implementation, the cabinet further comprises a top plate connected to upper ends of the two first side plates along the height direction of the cabinet. The charging device further comprises two groups of switch groups and two second fans in the cabinet. The two groups of switch groups are fixed one by one corresponding to the two first side plates, and each group of switch groups is located between the corresponding charging gun and the first heat exchanger along the height direction of the cabinet. The upper end of each group of switch groups is connected to the wire in the one end of the corresponding charging gun. The two second fans are arranged on the top plate along the direction in which the two first side plates are arranged, and the air outlets of the two second fans are respectively directed to the two groups of switch groups.

[0021] In the technical solution, the two second fans on the top plate can respectively drive the gas in the cabinet to flow to the two groups of switch groups to cool the two groups of switch groups. In addition, in actual application, the wire in the charging gun and the liquid cooling passage are separated from the gun wire joint at which the charging gun is connected to the switch group, so that the wire is connected to the power converter and the liquid cooling passage is connected to the first heat exchanger. However, this can cause the wire of the gun wire joint to be unable to be cooled by the liquid cooling passage. Therefore, in the embodiment, the two second fans are arranged on the top plate, so that the one end of the two charging guns connected to the upper ends of the two groups of switch groups is located between the two second fans and the two groups of switch groups. In this way, in the process in which the two second fans drive the gas to flow downward to the two groups of switch groups, the gas can also flow through the one end of the two charging guns to cool the gun wire joint at which the two charging guns are connected to the two groups of switch groups. Therefore, the two second fans can simultaneously cool the two groups of switch groups and the gun wire joints of the two charging guns connected thereto, which can improve the cooling performance of the switch groups and the charging guns, and reduce the number of fans used in the cabinet, thereby saving the cost of the charging device.

[0022] In an implementation, the cabinet body further comprises a top plate connected to upper ends of the two first side plates along the height direction of the cabinet body. The charging device further comprises two groups of switch groups, two second fans and two third fans located inside the cabinet body. The two groups of switch groups are fixed in one-to-one correspondence with the two first side plates, and each group of switch groups is located between one end of the corresponding charging gun and the corresponding first heat exchanger along the height direction of the cabinet body. An upper end of each group of switch groups is connected to a wire in one end of the corresponding charging gun along the height direction of the cabinet body. The two second fans are arranged on one second side plate along the direction in which the two first side plates are arranged, and the two second fans are located above the second heat exchanger along the height direction of the cabinet body. The air outlets of the two second fans respectively face the two groups of switch groups. The two third fans are arranged on the top plate along the direction in which the two first side plates are arranged, and the air outlets of the two third fans respectively face one end of the two charging guns.

[0023] In the above technical solution, the two second fans arranged on the second side plate can respectively drive the gas inside the cabinet body to flow to the two groups of switch groups to perform air cooling heat dissipation on the two groups of switch groups. Meanwhile, the two third fans arranged on the top plate can respectively drive the gas inside the cabinet body to flow to the wire joint of the charging gun connected to the upper end of the two groups of switch groups to perform air cooling heat dissipation on the wire joint of the charging gun. In this way, the heat dissipation performance of the switch groups and the charging gun can be improved, and the normal operation of one of the second fan and the third fan for air cooling heat dissipation is not affected by the failure of the other.

[0024] In an implementation, the charging device further comprises two liquid storage tanks and two groups of water pumps, and each group of water pumps comprises one water pump or at least two parallel water pumps. The two liquid storage tanks and the two groups of water pumps are respectively in one-to-one correspondence with the two first heat exchangers. Each liquid storage tank and each group of water pumps are connected between the liquid outlet of the other first cooling liquid channel of the corresponding first heat exchanger and the liquid inlet of the liquid cooling channel of the corresponding charging gun. Along the height direction of the cabinet body, each liquid storage tank is located between one end of the corresponding charging gun and the corresponding first heat exchanger, and each group of water pumps is located below the corresponding first heat exchanger.

[0025] Based on the above design, the two liquid storage tanks can be respectively used to provide cooling liquid for the cooling circuit formed by the corresponding first heat exchanger and the liquid cooling channel of the charging gun, and the two groups of water pumps can be respectively used to drive the cooling liquid to circulate in the cooling circuit formed by the corresponding first heat exchanger. In this way, the continuous operation of the first heat exchanger for liquid cooling heat dissipation of the wire in the charging gun can be ensured. In addition, by arranging the liquid storage tank, the first heat exchanger and the water pump in sequence along the height direction of the cabinet body, the size occupied by the liquid storage tank, the first heat exchanger and the water pump in the width and length directions of the cabinet body can be reduced, thereby reducing the area occupied by the cabinet body when placed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1is a scene schematic diagram in which a charging device provided by an embodiment of the present application charges an electric vehicle.

[0027] Figure 2 is a three-dimensional structure schematic diagram of a charging device provided by an embodiment of the present application.

[0028] Figure 3 and Figure 4 are respectively a three-dimensional structure schematic diagram of another charging device provided by an embodiment of the present application. Figure 2 is a side view structure schematic diagram of the charging device shown in

[0029] Figures 5 to 8 are respectively a three-dimensional structure schematic diagram of another charging device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to facilitate understanding of the embodiments of the present application, the following points are explained before the embodiments of the present application are introduced.

[0031] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like in the embodiments of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] The "vertical" in the present application is not strictly vertical, but within the allowable error range. The "parallel" is not strictly parallel, but within the allowable error range.

[0033] In the embodiments of the present application, the same reference signs represent the same components or the same parts. In the embodiments of the present application, for a plurality of identical parts, only one of the parts may be labeled with a reference sign in the drawings. The reference signs are also applicable to other identical parts or components. In addition, the sizes and dimensions of the parts shown in the drawings are only exemplary.

[0034] The technical solutions in the present application will be described below with reference to the drawings.

[0035] First, in order to facilitate understanding of the technical solutions provided by the embodiments of the present application, the application scenarios applicable to the embodiments of the present application are introduced.

[0036] Figure 1 is a scene schematic diagram in which a charging device 10 provided by an embodiment of the present application charges an electric vehicle 20.

[0037] In combination with Figure 1In (a) and (b) of FIG. 1, the charging device 10 is configured to receive alternating current output by the power grid 30, convert the alternating current into stable direct current, and then deliver the direct current to the electric vehicle 20 to charge the electric vehicle 20. Alternatively, in some other embodiments, the electric vehicle 20 can also output electric energy to the power grid 30 through the charging device 10.

[0038] In some embodiments, as shown in (a) of FIG. 1, the charging device 10 is a split charging device. Specifically, the charging device 10 includes a charging host 11, a plurality of charging terminals 12, and a plurality of charging guns 13. The charging host 11 includes a charging host cabinet and a plurality of power converters (not shown in the figure), and the plurality of power converters are located in the charging host cabinet. Each charging terminal 12 is fixed with at least one charging gun 13. The output ends of the plurality of power converters are connected to the charging guns 13 fixed to each charging terminal 12. Figure 1

[0039] For example, the plurality of power converters can include a plurality of alternating current-direct current (AC-DC) converters and a plurality of direct current-direct current (DC-DC) converters. The output end of each AC-DC converter is connected to the input end of each DC-DC converter through a direct current bus, and the output end of each DC-DC converter is connected to the charging gun 13 fixed to each charging terminal 12.

[0040] In specific implementation, each AC-DC converter is configured to convert alternating current from the power grid 30 into direct current and then output the direct current to the direct current bus, and each DC-DC converter is configured to further convert the direct current obtained from the direct current bus and then deliver the direct current to the charging gun 13 fixed to the charging terminal 12. The charging gun 13 is configured to deliver the received direct current to the electric vehicle 20 to charge the electric vehicle 20.

[0041] It should be understood that, in the embodiments of the present application, the charging terminal 12 includes a charging terminal cabinet, a human-computer interaction interface, a charging control unit, a metering and charging unit, and the like, to perform information interaction, energy transmission, metering and charging, and the like, with the electric vehicle 20.

[0042] ​It should also be understood that in the embodiments of the present application, the electric vehicle 20 is a vehicle driven by electric energy. The electric vehicle 20 is 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), etc.

[0043] In some other embodiments, as shown in (b) of FIG. 1, the charging device 10 is an integrated charging device. Specifically, the plurality of power converters in the charging host 11 described above can be directly arranged in one charging terminal cabinet. In this way, the charging device 10 can only include one charging terminal 12 and at least one charging gun 13 fixed to the charging terminal 12.

[0044] As described in the background section above, as the charging device 10 continues to evolve into an ultra-charging type charging device, the output power of the plurality of power converters in the charging device 10 as a whole continues to increase in order to increase the charging power delivered by a single charging gun 13 to the electric vehicle 20. At the same time, in order to better improve the speed of charging the electric vehicle 20 with high charging power demand such as a heavy truck, the current charging terminal 12 is usually fixed with two charging guns 13 to deliver charging power to the same electric vehicle 20 through the two charging guns 13 at the same time, so as to achieve megawatt-level ultra-charging for the electric vehicle 20.

[0045] However, as the charging power delivered by a single charging gun 13 continues to increase, the heat generated by the wire for transmitting electric energy in each charging gun 13 fixed to the charging terminal 12 during operation will increase significantly, especially when the two charging guns 13 fixed to the charging terminal 12 are working at the same time, the heat generated by the two charging guns 13 as a whole will increase significantly. However, the heat dissipation capacity of the existing charging terminal 12 is limited and cannot better meet the heat dissipation needs of the two charging guns 13 fixed to the charging terminal 12.

[0046] Based on the above, the embodiment of the present application provides a charging device, which comprises a cabinet, two charging guns and two first heat exchangers. The cabinet is used for accommodating one end of each charging gun and the two first heat exchangers, and the other end of each charging gun is located outside the cabinet. The liquid inlet of the liquid cooling channel in each charging gun and the liquid outlet of the liquid cooling channel are located at one end of the charging gun. The cabinet comprises two first side plates arranged opposite along the height direction of the cabinet. The two charging guns and the two first heat exchangers are respectively fixed to the two first side plates one by one, and each first heat exchanger is located below one end of the corresponding charging gun along the height direction of the cabinet. Each first heat exchanger comprises two first cooling liquid channels, and one first cooling liquid channel is used for heat exchange with the other first cooling liquid channel. The liquid inlet of the other first cooling liquid channel is connected to the liquid outlet of the liquid cooling channel in the corresponding charging gun, and the liquid outlet of the other first cooling liquid channel is connected to the liquid inlet of the liquid cooling channel in the corresponding charging gun.

[0047] In the charging device provided by the embodiment of the present application, the two first heat exchangers located inside the cabinet can be connected with the liquid cooling channels in the two charging guns fixed to the cabinet to form cooling circuits. In this way, the cooling liquid flowing in the liquid cooling channel of each charging gun can flow into the corresponding first heat exchanger through the formed cooling circuit after absorbing the heat generated by the wires in the charging gun. The first heat exchanger can adopt liquid-liquid heat exchange to cool the cooling liquid flowing out of the liquid cooling channel, thereby realizing liquid cooling heat dissipation of the wires in the charging gun. Compared with the traditional air cooling heat dissipation mode of a fan, the liquid cooling heat dissipation mode has higher efficiency in heat dissipation of the wires. Moreover, compared with the air-liquid heat exchange mode, the first heat exchanger adopts liquid-liquid heat exchange to cool the cooling liquid flowing out of the liquid cooling channel, which has higher efficiency, thereby further improving the heat dissipation efficiency of the wires.

[0048] In addition, since the processes of liquid cooling heat dissipation of the wires in the two charging guns by the two first heat exchangers are independent of each other, the normal liquid cooling heat dissipation of the wires in the charging gun by the other first heat exchanger can be ensured even if one first heat exchanger fails. Therefore, the heat dissipation performance of the two charging guns located in the same cabinet can be improved to meet the heat dissipation demand of the two charging guns located in the same cabinet in high-power working, and the operation safety of the charging device is ensured.

[0049] The charging device provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

[0050] Figure 2 is a three-dimensional structural schematic diagram of a charging device 400 provided by the embodiment of the present application. Figure 3 and Figure 4 respectively show a side structural schematic diagram of the charging device 400 provided by the embodiment of the present application. Figure 2 ​

[0051] In combination Figures 2 to 4 The charging device 400 includes a cabinet 410 and two charging guns 420, i.e., a charging gun 420a and a charging gun 420b. The cabinet 410 is configured to accommodate one end of each charging gun 420, and the other end of each charging gun 420 is located outside the cabinet 410 and configured to be connected to an electric vehicle.

[0052] Specifically, the cabinet 410 includes a top plate 411, a bottom plate 412, a first side plate 413a, a first side plate 413b, a second side plate 414a, and a second side plate 414b. The top plate 411 and the bottom plate 412 are arranged opposite to each other along a height direction of the cabinet 410, the first side plate 413a and the first side plate 413b are arranged opposite to each other along a length direction of the cabinet 410, and the second side plate 414a and the second side plate 414b are arranged opposite to each other along a width direction of the cabinet 410. In addition, the top plate 411 is connected to the upper end of each side plate along the height direction of the cabinet 410, and the bottom plate 412 is connected to the lower end of each side plate along the height direction of the cabinet 410. In this way, the top plate 411, the bottom plate 412, the two first side plates, and the two second side plates can be enclosed to form an accommodation cavity of the cabinet 410, which is configured to accommodate one end 421a of the charging gun 420a and one end 421b of the charging gun 420b.

[0053] It should be understood that, in the embodiments of the present application, the height direction of the cabinet 410, the length direction of the cabinet 410, and the width direction of the cabinet 410 are perpendicular to each other. In addition, the height direction of the cabinet 410, the length direction of the cabinet 410, and the width direction of the cabinet 410 can also be referred to as the height direction, the length direction, and the width direction, respectively.

[0054] In some embodiments, in combination Figures 2 to 4 The charging gun 420a and the charging gun 420b are fixed to the first side plate 413a and the first side plate 413b, respectively. For example, the charging gun 420a is fixed to the first side plate 413a, and the charging gun 420b is fixed to the first side plate 413b.

[0055] For example, the first side plate 413a and the first side plate 413b each include a gun wire mounting hole. One end 421a of the charging gun 420a and one end 421b of the charging gun 420b are located inside the cabinet 410, the other end 422a of the charging gun 420a passes through the gun wire mounting hole in the first side plate 413a and extends out of the cabinet 410, and the other end 422b of the charging gun 420b passes through the gun wire mounting hole in the first side plate 413b and extends out of the cabinet 410.

[0056] In some embodiments, in combination Figures 2 to 4The charging device 400 further comprises a power converter (not shown in the figure), and each charging gun 420 comprises a gun wire and a charging gun head. The one end of the gun wire is located in the interior of the cabinet 410, and the one end of the gun wire is connected with the output end of the power converter. The other end of the gun wire and the charging gun head are located in the exterior of the cabinet 410, the other end of the gun wire is connected with the charging gun head, and the charging gun head is used for plugging with the charging socket of the electric vehicle. In this way, the charging gun 420 can deliver the electric energy output by the power converter to the electric vehicle.

[0057] Based on the above design, in the embodiment of the present application, the one end of each charging gun 420 can be understood as the one end of the gun wire in each charging gun 420, and the other end of each charging gun 420 can be understood as the charging gun head in each charging gun 420.

[0058] It should be understood that, in the embodiment of the present application, the power converter can be a DC-DC converter, and the specific description of the DC-DC converter can be referred to the related description of the illustrated embodiment, which will not be repeated here. In addition, in the specific implementation, the power converter can be located in the exterior of the cabinet 410 or in the interior of the cabinet 410. Figure 1

[0059] For example, in one example, the power converter is located in the exterior of the cabinet 410. That is, the charging device 400 can be the split charging device shown in (a) of Figure 1 , the cabinet 410 is the charging terminal cabinet in the split charging device, and the number of the cabinet 410 in the charging device 400 is multiple. Exemplarily, the charging device 400 further comprises a charging host cabinet, the power converter is located in the charging host cabinet, and the power converter is connected with the one end of each charging gun 420 in the cabinet 410 through the wire.

[0060] In another example, the power converter is located in the interior of the cabinet 410. That is, the charging device 400 can be the integrated charging device shown in (b) of Figure 1 , the cabinet 410 is the charging terminal cabinet in the integrated charging device, and the number of the cabinet 410 in the charging device 400 is one. Exemplarily, the cabinet 410 comprises two chambers arranged along the width direction. The power converter is located in one of the chambers, and the one end of the two charging guns 420 is located in the other chamber.

[0061] It should be noted that, for the convenience of description and understanding, the embodiment of the present application is described by taking the power converter located in the exterior of the cabinet 410 as an example, that is, by taking the charging device 400 as the split charging device as an example.

[0062] In some embodiments, as shown in Figure 3 and Figure 4 ​As shown, the gun line of the charging gun 420a includes an outer protective sleeve 423a, and a wire 424a and a liquid cooling channel in the outer protective sleeve 423a. The wire 424a is connected between the output of the power converter and the charging gun head, for transmitting the electric energy output by the power converter to the charging gun head. The liquid cooling channel is used for the flow of cooling liquid for absorbing the heat generated by the wire 424a when working. Among them, the liquid outlet 425a of the liquid cooling channel and the liquid inlet 426a of the liquid cooling channel are both located at one end 421a of the charging gun 420a. That is, the liquid outlet 425a of the liquid cooling channel and the liquid inlet 426a of the liquid cooling channel are both located inside the cabinet body 410.

[0063] It should be understood that the above description related to the charging gun 420a is also applicable to the charging gun 420b, and will not be described here to avoid repetition.

[0064] In some embodiments, in combination with Figures 2 to 4 The charging device 400 further includes two first heat exchangers 430 inside the cabinet body 410. Among them, the two first heat exchangers 430 are fixed one-to-one with the first side plate 413a and the first side plate 413b, that is, the two first heat exchangers 430 are also one-to-one with the two charging guns 420 fixed to the first side plate 413a and the first side plate 413b.

[0065] Among them, each first heat exchanger 430 is located below one end of the corresponding charging gun 420 along the height direction. And each first heat exchanger 430 includes two first cooling liquid channels, one first cooling liquid channel is used for heat exchange with the other first cooling liquid channel. The liquid inlet of the other first cooling liquid channel is connected to the liquid outlet of the liquid cooling channel in the corresponding charging gun 420, and the liquid outlet of the other first cooling liquid channel is connected to the liquid inlet of the liquid cooling channel in the corresponding charging gun 420.

[0066] Exemplarily, in combination with Figures 2 to 4 The charging device 400 includes a first heat exchanger 430a and a first heat exchanger 430b. The first heat exchanger 430a and the charging gun 420a correspond and are fixed together on the first side plate 413a, and the first heat exchanger 430b and the charging gun 420b correspond and are fixed together on the first side plate 413b. And along the height direction, the first heat exchanger 430a is located below one end 421a of the charging gun 420a, and the first heat exchanger 430b is located below one end 421b of the charging gun 420b.

[0067] The first heat exchanger 430a includes a first cooling liquid passage 431a and a first cooling liquid passage 432a for heat exchange with the first cooling liquid passage 431a. The inlet of the first cooling liquid passage 431a is connected to the outlet 425a of the liquid cooling passage in the charging gun 420a, and the outlet of the first cooling liquid passage 431a is connected to the inlet 426a of the liquid cooling passage in the charging gun 420a.

[0068] Based on the above design, the first cooling liquid passage 431a can be connected with the liquid cooling passage in the charging gun 420a to form a cooling loop. In this way, the cooling liquid can circulate between the liquid cooling passage in the charging gun 420a and the first cooling liquid passage 431a. When the cooling liquid flows in the liquid cooling passage, it can be used to absorb the heat generated by the wire 424a in the charging gun 420a, and then the cooling liquid carrying the heat can flow into the first cooling liquid passage 431a through the cooling loop. At the same time, the cooling liquid flowing in the first cooling liquid passage 432a can absorb the heat carried by the cooling liquid in the first cooling liquid passage 431a, that is, the first heat exchanger 430a can cool the cooling liquid flowing out of the liquid cooling passage through liquid-liquid heat exchange. The cooled cooling liquid flows back to the liquid cooling passage in the charging gun 420a through the cooling loop, thereby realizing liquid cooling heat dissipation for the wire 424a in the charging gun 420a.

[0069] Similarly, the first cooling liquid passage 432b in the first heat exchanger 430b is used for heat exchange with the first cooling liquid passage 431b. The first cooling liquid passage 431b can be connected with the liquid cooling passage in the charging gun 420b to form a cooling loop, so as to realize liquid cooling heat dissipation for the wire in the charging gun 420b. For specific description, please refer to the above description of the first heat exchanger 430a, which will not be repeated here.

[0070] It should be understood that, compared with the scheme of using a fan or other traditional air cooling heat dissipation mode to dissipate heat for the wires in the two charging guns 420 in the cabinet 410, the liquid cooling heat dissipation mode used in the embodiment of the present application has higher efficiency in dissipating heat for the wires in the charging gun 420. Moreover, compared with the scheme of using air-liquid heat exchange of the first heat exchanger 430 to cool the cooling liquid flowing out of the liquid cooling passage, that is, compared with the scheme of using air cooling heat dissipation to cool the cooling liquid flowing out of the liquid cooling passage, the efficiency of using liquid-liquid heat exchange of the first heat exchanger 430 to cool the cooling liquid flowing out of the liquid cooling passage is higher, thereby further improving the heat dissipation efficiency for the wires.

[0071] In addition, since the liquid cooling heat dissipation processes of the two first heat exchangers 430 on the wires in the two charging guns 420 are performed independently, the failure of one first heat exchanger 430 can prevent the other first heat exchanger 430 from normally dissipating heat from the wires in the charging gun 420. Thus, the heat dissipation performance of the two charging guns 420 in the same cabinet 410 can be improved to meet the heat dissipation requirements of the two charging guns 420 in the same cabinet 410 during high-power operation, and the operation safety of the charging device 400 is ensured.

[0072] In some embodiments, in combination with Figures 2 to 4 The charging device 400 further includes two groups of switch groups 450, i.e., a first group of switch groups 450a and a second group of switch groups 450b. The two groups of switch groups 450 are fixed one-to-one with the first side plate 413a and the first side plate 413b, so that the two groups of switch groups 450 are also one-to-one with the two charging guns 420 and the two first heat exchangers 430 fixed to the first side plate 413a and the first side plate 413b. Among them, each group of switch groups 450 is located between one end of the corresponding charging gun 420 and the corresponding first heat exchanger 430 along the height direction. And the upper end of each group of switch groups 450 along the height direction is connected to the wire in one end of the corresponding charging gun 420, and the lower end of each group of switch groups 450 along the height direction is connected to the output end of the power converter.

[0073] For example, in combination with Figures 2 to 4 The first group of switch groups 450a is fixed to the first side plate 413a. Among them, the first group of switch groups 450a is located between one end 421a of the charging gun 420a and the first heat exchanger 430a. The upper end 451a of the first group of switch groups 450a along the height direction is connected to the wire 424a in one end 421a of the charging gun 420a, and the lower end 452a of the first group of switch groups 450a along the height direction is connected to the output end of the power converter. That is, the output end of the power converter is connected to the wire 424a in the charging gun 420a through the first group of switch groups 450a.

[0074] In some embodiments, the first group of switch groups 450a can include a plurality of switches for controlling the on-off of the circuit between the output end of the power converter and the wire 424a in the charging gun 420a. The plurality of switches can also be referred to as power distribution switches.

[0075] Similarly, the second group of switch groups 450b is fixed to the first side plate 413b, and the second group of switch groups 450b is located between one end 421b of the charging gun 420b and the first heat exchanger 430b. For specific description of the second group of switch groups 450b, please refer to the relevant description of the first group of switch groups 450a, which will not be repeated here.

[0076] In some embodiments, in combination with Figures 2 to 4The charging device 400 further comprises a second heat exchanger 440 located inside the cabinet body 410 and fixed to the second side plate 414a, and the second heat exchanger 440 is located below one end of the two charging guns 420 in the height direction. That is, the second heat exchanger 440 is located between the two first heat exchangers 430 in the height direction. The second heat exchanger 440 comprises a gas passage 441 and a second cooling liquid passage 442 for heat exchange with the gas passage 441. The air inlet of the gas passage 441 and the air outlet of the gas passage 441 are respectively in communication with the environment inside the cabinet body 410.

[0077] In the above technical solution, when the gas inside the cabinet body 410 circulates in the gas passage 441, the cooling liquid flowing in the second cooling liquid passage 442 can absorb the heat carried by the gas in the gas passage 441 to cool the gas in the gas passage 441. The cooled gas can be used to air-cool the electronic devices inside the cabinet body 410, such as the two groups of switch groups 450. Compared with the natural cooling of the gas inside the cabinet body 410, the cooling efficiency of the gas inside the cabinet body 410 by the second heat exchanger 440 is higher, thereby improving the air-cooling efficiency of the electronic devices inside the cabinet body 410.

[0078] In some embodiments, in combination with Figures 2 to 4 To drive the gas inside the cabinet body 410 to flow in the gas passage 441, the second heat exchanger 440 further comprises a first fan 443.

[0079] In one example, in combination with Figure 2 and Figure 3 The second side plate 414a, the first fan 443 and the gas passage 441 are arranged in sequence in the width direction. That is, the first fan 443 is located between the second side plate 414a and the gas passage 441. The air inlet of the gas passage 441 faces the second side plate 414b, the air outlet of the gas passage 441 faces the air inlet of the first fan 443, and the air outlet of the first fan 443 faces the second side plate 414a.

[0080] In the above technical solution, the first fan 443 can drive the gas flowing into the gas passage 441 to flow out of the gas passage 441 faster, thereby enhancing the circulation of the gas inside the cabinet body 410 in the gas passage 441 and ensuring the cooling effect of the second heat exchanger 440 on the gas inside the cabinet body 410.

[0081] In another example, in combination with Figure 2 and Figure 4The second side plate 414a, the gas channel 441 and the first fan 443 are arranged in sequence in the width direction. That is, the first fan 443 is located on the side of the gas channel 441 away from the second side plate 414a. The air inlet of the first fan 443 faces the second side plate 414b, the air outlet of the first fan 443 faces the air inlet of the gas channel 441, and the air outlet of the gas channel 441 faces the second side plate 414a.

[0082] In the above technical solution, the first fan 443 can drive the gas in the cabinet 410 to flow into the gas channel 441 faster, thereby enhancing the circulation of the gas in the cabinet 410 in the gas channel 441 and ensuring the cooling effect of the second heat exchanger 440 on the gas in the cabinet 410.

[0083] In some embodiments, referring to Figure 2 The charging device 400 further includes a third heat exchanger 460 and two multi-way valves 470, i.e., a multi-way valve 470a and a multi-way valve 470b. The third heat exchanger 460 is located outside the cabinet 410. The third heat exchanger 460 includes a refrigerant channel 461 and a third cooling liquid channel 462, and the refrigerant channel 461 is used for heat exchange with the third cooling liquid channel 462.

[0084] The multi-way valve 470a is used to guide the passage between the outlet of the third cooling liquid channel 462 and at least one of the following: the inlet of the first cooling liquid channel 432a in the first heat exchanger 430a, the inlet of the first cooling liquid channel 432b in the first heat exchanger 430b, and the inlet of the second cooling liquid channel 442 in the second heat exchanger 440. The multi-way valve 470b is used to guide the passage between the inlet of the third cooling liquid channel 462 and at least one of the following: the outlet of the first cooling liquid channel 432a in the first heat exchanger 430a, the outlet of the first cooling liquid channel 432b in the first heat exchanger 430b, and the outlet of the second cooling liquid channel 442 in the second heat exchanger 440.

[0085] Specifically, the four valve ports of the multi-way valve 470a are connected to the outlet of the third cooling liquid channel 462, the inlet of the first cooling liquid channel 432a, the inlet of the first cooling liquid channel 432b, and the inlet of the second cooling liquid channel 442 one by one. The four valve ports of the multi-way valve 470b are connected to the inlet of the third cooling liquid channel 462, the outlet of the first cooling liquid channel 432a, the outlet of the first cooling liquid channel 432b, and the outlet of the second cooling liquid channel 442 one by one.

[0086] In the technical solution, the third cooling liquid channel 462 can be connected with the first cooling liquid channel 432a of the first heat exchanger 430a, the first cooling liquid channel 432b of the first heat exchanger 430b, and the second cooling liquid channel 442 of the second heat exchanger 440 through the multi-way valve 470a and the multi-way valve 470b to form a cooling loop. In actual application, by adjusting the on-off state between different valve ports of each of the multi-way valve 470a and the multi-way valve 470b, the cooling loop formed by the third cooling liquid channel 462 and any one of the first cooling liquid channel 431a, the first cooling liquid channel 431b, and the second cooling liquid channel 442 can be conducted, so that the third heat exchanger 460 can dissipate heat of the cooling liquid flowing through any one of the first cooling liquid channel 431a, the first cooling liquid channel 431b, and the second cooling liquid channel 442. In turn, it can ensure that the two first heat exchangers 430 can respectively dissipate heat of the wires in the two charging guns 420 through liquid cooling, and the second heat exchanger 440 can continuously cool the gas inside the cabinet 410.

[0087] In specific implementation, in some embodiments, referring to Figure 2 , the bottom plate 412 includes an opening 4121, the multi-way valve 470a and the multi-way valve 470b are located inside the cabinet 410, and the charging device 400 further includes an inlet liquid pipeline 481 and an outlet liquid pipeline 482.

[0088] The four valve ports of the multi-way valve 470a are connected with the outlet liquid port of the inlet liquid pipeline 481, the inlet liquid port of the first cooling liquid channel 432a, the inlet liquid port of the first cooling liquid channel 432b, and the inlet liquid port of the second cooling liquid channel 442 one by one. The inlet liquid port of the inlet liquid pipeline 481 passes through the opening 4121 and extends out of the cabinet 410, and the inlet liquid port of the inlet liquid pipeline 481 is connected with the outlet liquid port of the third cooling liquid channel 462.

[0089] In addition, the four valve ports of the multi-way valve 470b are connected with the inlet liquid port of the outlet liquid pipeline 482, the outlet liquid port of the first cooling liquid channel 432a, the outlet liquid port of the first cooling liquid channel 432b, and the outlet liquid port of the second cooling liquid channel 442 one by one. The outlet liquid port of the outlet liquid pipeline 482 passes through the opening 4121 and extends out of the cabinet 410, and the outlet liquid port of the outlet liquid pipeline 482 is connected with the outlet liquid port of the third cooling liquid channel 462.

[0090] It should be understood that, in the embodiments of the present application, the number of openings 4121 provided in the bottom plate 412 can be one or more, and the inlet liquid pipeline 481 and the outlet liquid pipeline 482 can pass through the same opening 4121 or different openings 4121. For example, as Figure 2 shown, when the number of openings 4121 provided in the bottom plate 412 is two, the inlet liquid pipeline 481 and the outlet liquid pipeline 482 can pass through one opening 4121 respectively.

[0091] In the technical solution, the two multi-way valves 470 are arranged inside the cabinet 410, so that the third heat exchanger 460 outside the cabinet 410 is connected to the cabinet 410 through one liquid inlet pipeline and one liquid outlet pipeline. Compared with the scheme in which the two multi-way valves 470 are arranged outside the cabinet 410 and connected to the two first heat exchangers 430 and the second heat exchanger 440 inside the cabinet 410 through three long liquid inlet pipelines and three long liquid outlet pipelines, the design can reduce the complexity of pipeline connection between the third heat exchanger 460 and the cabinet 410 and reduce the use of long pipelines, thereby saving the cost of the charging device 400.

[0092] In some other embodiments, referring to Figure 5 , Figure 5 is another three-dimensional structural schematic view of a charging device 400 provided in the embodiments of the present application.

[0093] Unlike the embodiments shown in Figure 2 , in the charging device 400 shown in Figure 5 , the multi-way valve 470a and the multi-way valve 470b are arranged outside the cabinet 410, and the charging device 400 further includes three liquid inlet pipelines 483 and three liquid outlet pipelines 484.

[0094] The four valve ports of the multi-way valve 470a are connected to the liquid outlet of the third cooling liquid channel 462 and the liquid inlets of the three liquid inlet pipelines 483 one by one. The liquid outlets of the three liquid inlet pipelines 483 pass through the opening 4121 and extend into the interior of the cabinet 410, and the liquid outlets of the three liquid inlet pipelines 483 are connected to the liquid inlets of the first cooling liquid channel 432a, the first cooling liquid channel 432b and the second cooling liquid channel 442 one by one.

[0095] In addition, the four valve ports of the multi-way valve 470b are connected to the liquid inlets of the third cooling liquid channel 462 and the liquid outlets of the three liquid outlet pipelines 484 one by one. The liquid inlets of the three liquid outlet pipelines 484 pass through the opening 4121 and extend into the interior of the cabinet 410, and the liquid inlets of the three liquid outlet pipelines 484 are connected to the liquid outlets of the first cooling liquid channel 432a, the first cooling liquid channel 432b and the second cooling liquid channel 442 one by one.

[0096] It should be understood that in the embodiments of the present application, the number of openings 4121 arranged in the bottom plate 412 can be one or more, and the three liquid inlet pipelines 483 and the three liquid outlet pipelines 484 can pass through the same opening 4121 or different openings 4121. For example, as shown in Figure 5As shown, when the number of openings 4121 arranged in the bottom plate 412 is two, three liquid inlet pipes 483 and three liquid outlet pipes 484 can pass through one opening 4121 respectively.

[0097] In the above technical solution, by arranging the two multi-way valves 470 outside the cabinet body 410, the connection between the liquid inlet of each multi-way valve 470 and the liquid inlet pipe or the liquid outlet pipe is located outside the cabinet body 410. On the one hand, this can reduce the occupied space of the two multi-way valves 470 and the liquid inlet pipes and liquid outlet pipes connected thereto in the cabinet body 410, thereby facilitating the reduction of the overall size of the cabinet body 410. On the other hand, when a fault occurs at the connection between the two multi-way valves 470 and the pipes and needs to be repaired, the operation space of the operator can not be limited by the internal space of the cabinet body 410.

[0098] Figure 6 is another three-dimensional structural schematic diagram of the charging device 400 provided by the embodiment of the present application.

[0099] In some embodiments, referring to Figure 6 The charging device 400 further includes two liquid storage tanks 490 and two groups of water pumps 4100, i.e., including the liquid storage tank 490a, the liquid storage tank 490b, the first group of water pumps 4100a and the second group of water pumps 4100b. Each group of water pumps 4100 includes one water pump or at least two parallel water pumps. For example, Figure 6 Exemplarily, each group of water pumps 4100 includes two parallel water pumps.

[0100] Among them, the two liquid storage tanks 490 and the two groups of water pumps 4100 correspond to the two first heat exchangers 430 one by one, and each liquid storage tank 490 and each group of water pumps 4100 are connected between the liquid outlet of the other first cooling liquid channel of the corresponding first heat exchanger 430 and the liquid inlet of the liquid cooling channel in the corresponding charging gun 420 corresponding to the corresponding first heat exchanger 430. In addition, along the height direction, each liquid storage tank 490 is located between the corresponding first heat exchanger 430 and one end of the corresponding charging gun 420 corresponding to the corresponding first heat exchanger 430, and each group of water pumps 4100 is located below the corresponding first heat exchanger 430.

[0101] For example, as Figure 6As shown, the outlet of the first cooling liquid passage 431a in the first heat exchanger 430a is connected to the inlet of the liquid cooling passage in the charging gun 420a through the liquid storage tank 490a and the first group of water pumps 4100a in series, and the outlet of the first cooling liquid passage 431b in the first heat exchanger 430b is connected to the inlet of the liquid cooling passage in the charging gun 420b through the liquid storage tank 490b and the second group of water pumps 4100b in series. Specifically, the inlet of the liquid storage tank 490a is connected to the outlet of the first cooling liquid passage 431a, and the outlet of the liquid storage tank 490a is connected to the inlet of the liquid cooling passage in the charging gun 420a through the first group of water pumps 4100a. The inlet of the liquid storage tank 490b is connected to the outlet of the first cooling liquid passage 431b, and the outlet of the liquid storage tank 490b is connected to the inlet of the liquid cooling passage in the charging gun 420b through the second group of water pumps 4100b.

[0102] In addition, along the height direction, the liquid storage tank 490a, the first heat exchanger 430a and the first group of water pumps 4100a are arranged from top to bottom, and the liquid storage tank 490b, the first heat exchanger 430b and the second group of water pumps 4100b are arranged from top to bottom.

[0103] Based on the above design, the two liquid storage tanks 490 can be used to provide cooling liquid for the cooling circuit formed by the corresponding first heat exchanger 430 and the liquid cooling passage in the charging gun 420, and the two groups of water pumps 4100 can be used to drive the cooling liquid to circulate in the cooling circuit formed by the corresponding first heat exchanger 430. In this way, the liquid cooling heat dissipation of the first heat exchanger 430 to the conductors in the charging gun 420 can be ensured to continue. In addition, by arranging the liquid storage tank 490, the first heat exchanger 430 and the water pump in the height direction of the cabinet 410 in turn, the size occupied by the liquid storage tank 490, the first heat exchanger 430 and the water pump in the width and length directions of the cabinet 410 can be reduced, thereby reducing the area occupied by the cabinet 410 when placed.

[0104] It should be understood that, Figure 6 The details of the charging device 400 shown can be referred to in the related description of the embodiments shown, which will not be described here. Figures 2 to 5 The details of the charging device 400 shown can be referred to in the related description of the embodiments shown, which will not be described here.

[0105] Figure 7 is another three-dimensional structure schematic diagram of a charging device 400 provided by an embodiment of the present application.

[0106] In some embodiments, the charging device 400 further includes two second fans 4200 located inside the cabinet 410, i.e., including a second fan 4200a and a second fan 4200b. Among them, the two second fans 4200 are arranged in the length direction of the top plate 411, and the air outlets of the two second fans 4200 respectively face the two groups of switch groups 450. For example, as shown in Figure 7As shown, the second fan 4200a is arranged close to the first group of switch groups 450a, and the second fan 4200b is arranged close to the second group of switch groups 450b. In addition, the air outlet of the second fan 4200a is directed towards the first group of switch groups 450a, and the air outlet of the second fan 4200b is directed towards the second group of switch groups 450b.

[0107] In the above technical solution, the second fan 4200a can drive the air inside the cabinet 410 to flow towards the first group of switch groups 450a, and the second fan 4200b can drive the air inside the cabinet 410 to flow towards the second group of switch groups 450b, so as to cool the two groups of switch groups 450 by air cooling.

[0108] In addition, in actual application, in combination with Figure 3 , Figure 4 and Figure 7 , taking the charging gun 420a as an example, at one end 421a of the charging gun 420a, i.e. at the gun wire joint where the charging gun 420a is connected to the first group of switch groups 450a, the outer protective sleeve 423a of the gun wire usually needs to be stripped for a certain length, so that the wire 424a and the liquid cooling channel in the outer protective sleeve 423a are separated. In this way, the wire 424a, the liquid outlet 425a of the liquid cooling channel, and the liquid inlet 426a of the liquid cooling channel can be exposed from the stripped wire, so as to facilitate the connection of the wire 424a with the first group of switch groups 450a, the liquid outlet 425a of the liquid cooling channel with the liquid inlet of the first cooling liquid channel 431a, and the liquid inlet 426a of the liquid cooling channel with the liquid outlet of the first cooling liquid channel 431a, respectively. However, in the stripped wire section of the above gun wire joint, the separation of the wire 424a and the liquid cooling channel causes the wire 424a to be unable to be well cooled by the liquid cooling channel.

[0109] Therefore, in the embodiment of the present application, by arranging two second fans 4200 on the top plate 411, one end of the two charging guns 410 connected with the upper end of the two groups of switch sets 450 can be located between the two second fans 4200 and the two groups of switch sets 450. In this way, in the process of the gas in the cabinet 410 driven by the two second fans 4200 flowing downward, the gas can also flow through one end of the two charging guns 420 to cool and dissipate heat at the gun wire joint of the two charging guns 420 connected with the two groups of switch sets 450. For example, in the process of the gas flowing out of the air outlet of the second fan 4200a flowing downward to the first group of switch sets 450a, the gas first flows through one end 421a of the charging gun 420a and then flows downward to the first group of switch sets 450a to cool and dissipate heat at the gun wire joint of the charging gun 420a and the first group of switch sets 450a at the same time. Therefore, by arranging the two second fans 4200 on the top plate 411, the heat dissipation of the two groups of switch sets 450 and the gun wire joints of the two charging guns 420 connected therewith can be realized at the same time, which can improve the heat dissipation performance of the two groups of switch sets 450 and the two charging guns 420 while reducing the number of fans used in the cabinet 410, thereby saving the cost of the charging device 400.

[0110] Further, the gas flowing through the two groups of switch sets 450 can continue to flow downward after absorbing heat to flow into the gas passage 441 of the second heat exchanger 440 for cooling. The gas cooled by the second heat exchanger 440 can be driven by the two second fans 4200 to flow to the two groups of switch sets 450 and the gun wire joints of the two charging guns 420 again, thereby realizing the circulating heat dissipation of the two groups of switch sets 450 and the gun wire joints of the two charging guns 420.

[0111] Figure 8 is another three-dimensional structural schematic view of a charging device 400 provided by an embodiment of the present application.

[0112] Unlike the embodiment shown in Figure 7 , in the embodiment shown in Figure 8 , the charging device 400 includes two third fans 4300 in the cabinet 410 in addition to the two second fans 4200, that is, the charging device 400 includes the second fan 4200a, the second fan 4200b, the third fan 4300a and the third fan 4300b.

[0113] Among them, the two second fans 4200 are arranged along the length direction on the second side plate 414a, and along the height direction, the two second fans 4200 are located above the second heat exchanger 440. The air outlets of the two second fans 4200 are respectively directed towards the two groups of switch sets 450. For example, as shown in Figure 8As shown, the air outlet of the second fan 4200a faces the first group of switch groups 450a, and the air outlet of the second fan 4200b faces the second group of switch groups 450b.

[0114] In addition, two third fans 4300 are arranged along the length direction of the top plate 411, and the air outlets of the two third fans 4300 respectively face one end of the two charging guns 420. For example, as shown in FIG. 4, the third fan 4300a is arranged close to one end 421a of the charging gun 420a, and the third fan 4300b is arranged close to one end 421b of the charging gun 420b. In addition, the air outlet of the third fan 4300a faces one end 421a of the charging gun 420a, and the air outlet of the third fan 4300b faces one end 421b of the charging gun 420b. Figure 8

[0115] Based on the above design, the third fan 4300a can drive the gas inside the cabinet 410 to flow to one end 421a of the charging gun 420a, and the third fan 4300b can drive the gas inside the cabinet 410 to flow to one end 421b of the charging gun 420b, so as to perform air cooling heat dissipation on the gun wire joints of the two charging guns 420. At the same time, the two second fans 4200 can respectively drive the gas inside the cabinet 410 to perform air cooling heat dissipation on the two groups of switch groups 450. In this way, the heat dissipation performance of the two groups of switch groups 450 and the two charging guns 420 can be improved, and meanwhile, if one of the second fans 4200 and the third fans 4300 fails, the normal air cooling heat dissipation of the other one can not be affected, so that the reliability of air cooling heat dissipation on the two groups of switch groups 450 and the two charging guns can be improved.

[0116] Further, the gas flowing through the gun wire joints can flow downward after absorbing heat, and flow into the gas passage 441 of the second heat exchanger 440 together with the gas flowing through the two groups of switch groups 450 to be cooled. The gas cooled by the second heat exchanger 440 can be driven by the two second fans 4200 and the two third fans 4300 to flow to the two groups of switch groups 450 and the gun wire joints again, so as to realize the circulating heat dissipation on the two groups of switch groups 450 and the gun wire joints of the two charging guns 420.

[0117] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.​

Claims

1. A charging device, characterized in that, The charging device includes a cabinet, two charging guns and two first heat exchangers. The cabinet is used to accommodate one end of each charging gun and the two first heat exchangers. The other end of each charging gun is located outside the cabinet. The liquid inlet and liquid outlet of the liquid cooling channel of each charging gun are located at one end of the charging gun. The cabinet includes two first side panels, which are arranged opposite each other along the height direction perpendicular to the cabinet. The two charging guns and the two first heat exchangers are fixed to the two first side panels one-to-one, and each first heat exchanger is located below one end of the corresponding charging gun along the height direction of the cabinet. Each of the first heat exchangers includes two first coolant channels, one of which is used for heat exchange with the other. The inlet of the other first coolant channel is connected to the outlet of the liquid cooling channel in the corresponding charging gun, and the outlet of the other first coolant channel is connected to the inlet of the liquid cooling channel in the corresponding charging gun.

2. The charging device according to claim 1, characterized in that, The cabinet also includes two second side panels arranged opposite each other, the arrangement direction of the two second side panels being perpendicular to the height direction of the cabinet and the arrangement direction of the two first side panels, respectively; The charging device also includes a second heat exchanger, which is located inside the cabinet and fixed to a second side plate. Along the height direction of the cabinet, the second heat exchanger is located below one end of the two charging guns. The second heat exchanger includes a second coolant channel and a gas channel. The second coolant channel is used for heat exchange with the gas channel. The air inlet and air outlet of the gas channel are connected to the environment inside the cabinet.

3. The charging device according to claim 2, characterized in that, The charging equipment also includes a third heat exchanger and two multi-way valves, the third heat exchanger being located outside the cabinet; One of the multi-way valves is used to open the outlet of the third coolant passage in the third heat exchanger to a passage between at least one of the following: the inlet of the first coolant passage of each of the first heat exchangers, and the inlet of the second coolant passage; Another of the multi-way valves is used to open the inlet of the third coolant passage to a passage between at least one of the following: the outlet of one of the first coolant passages of each of the first heat exchangers, and the outlet of the second coolant passage.

4. The charging device according to claim 3, characterized in that, The cabinet also includes a bottom plate, which is connected to the lower end of the two first side plates along the height direction of the cabinet, and the bottom plate includes an opening; The two multi-way valves are located inside the cabinet. The charging equipment also includes an inlet pipe and an outlet pipe. The four valve ports of the multi-way valve are connected one-to-one with the outlet of the liquid inlet pipe, the inlet of the first coolant channel of the two first heat exchangers, and the inlet of the second coolant channel. The inlet of the liquid inlet pipe passes through the opening and extends out of the cabinet. The inlet of the liquid inlet pipe is connected to the outlet of the third coolant channel. The four valve ports of the other multi-way valve are connected one-to-one with the inlet of the outlet pipe, the outlet of the first coolant channel of the two first heat exchangers, and the outlet of the second coolant channel. The outlet of the outlet pipe passes through the opening and extends out of the cabinet. The outlet of the outlet pipe is connected to the inlet of the third coolant channel.

5. The charging device according to claim 3, characterized in that, The cabinet also includes a bottom plate, which is connected to the lower end of the two first side plates along the height direction of the cabinet, and the bottom plate includes an opening; The two multi-way valves are located outside the cabinet. The charging equipment also includes three inlet pipes and three outlet pipes. The four valve ports of the multi-way valve are connected one-to-one with the outlet of the third coolant channel and the inlet of the three inlet pipes. The outlet of the three inlet pipes passes through the opening and extends into the cabinet. The outlet of the three inlet pipes is connected one-to-one with the inlet of the first coolant channel and the inlet of the second coolant channel of the two first heat exchangers. The four valve ports of the other multi-way valve are connected one-to-one with the inlet of the third coolant channel and the outlet of the three outlet pipes. The inlets of the three outlet pipes pass through the opening and extend into the cabinet. The inlets of the three outlet pipes are connected one-to-one with the outlet of the first coolant channel and the outlet of the second coolant channel of the two first heat exchangers.

6. The charging device according to any one of claims 2 to 5, characterized in that, The second heat exchanger further includes a first fan, and the second side plate, the first fan, and the gas passage are arranged sequentially along the direction in which the two second side plates are arranged. The air inlet of the gas passage faces another second side plate, the air outlet of the gas passage faces the air inlet of the first fan, and the air outlet of the first fan faces the second side plate.

7. The charging device according to any one of claims 2 to 5, characterized in that, The second heat exchanger further includes a first fan, wherein the second side plate, the gas passage, and the first fan are arranged sequentially along the direction in which the two second side plates are arranged; The air inlet of the first fan faces the other second side plate, the air outlet of the first fan faces the air inlet of the gas channel, and the air outlet of the gas channel faces the other second side plate.

8. The charging device according to any one of claims 2 to 5, characterized in that, The cabinet also includes a top plate, which is connected to the upper end of the two first side plates along the height direction of the cabinet; The charging equipment also includes two sets of switches and two second fans located inside the cabinet; wherein... The two sets of switch groups are fixed one-to-one with the two first side plates. Each set of switch groups is located between one end of the corresponding charging gun and the corresponding first heat exchanger along the height direction of the cabinet. The upper end of each set of switch groups along the height direction of the cabinet is connected to the wire in one end of the corresponding charging gun. The two second fans are arranged on the top plate along the direction of the two first side plates, and the air outlets of the two second fans are respectively facing the two sets of switch groups.

9. The charging device according to any one of claims 2 to 5, characterized in that, The cabinet also includes a top plate, which is connected to the upper end of the two first side plates along the height direction of the cabinet; The charging equipment also includes two sets of switch groups, two second fans, and two third fans located inside the cabinet; wherein... The two sets of switch groups are fixed one-to-one with the two first side plates. Each set of switch groups is located between one end of the corresponding charging gun and the corresponding first heat exchanger along the height direction of the cabinet. The upper end of each set of switch groups along the height direction of the cabinet is connected to the wire in one end of the corresponding charging gun. The two second fans are arranged on the one second side plate along the direction of the two first side plates, and the two second fans are located above the second heat exchanger along the height direction of the cabinet. The air outlets of the two second fans are respectively facing the two sets of switch groups. The two third fans are arranged on the top plate along the direction of the two first side plates, and the air outlets of the two third fans are respectively facing one end of the two charging guns.

10. The charging device according to any one of claims 1 to 5, characterized in that, The charging equipment also includes two liquid storage tanks and two sets of water pumps, each set of water pumps comprising one water pump or at least two water pumps connected in parallel; wherein... The two liquid storage tanks and the two sets of water pumps correspond one-to-one with the two first heat exchangers. Each liquid storage tank and each set of water pumps are respectively connected between the liquid outlet of the other first coolant channel of the corresponding first heat exchanger and the liquid inlet of the liquid cooling channel in the corresponding charging gun. Along the height direction of the cabinet, each of the liquid storage tanks is located between one end of the corresponding charging gun and the corresponding first heat exchanger, and each set of water pumps is located below the corresponding first heat exchanger.

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