Charging device

Abstract

The embodiment of the utility model provides charging equipment. The charging equipment comprises a cabinet body, a switch group, a charging gun, a heat exchanger and two groups of fans. The cabinet body is used for accommodating the switch group, one end of the charging gun, the heat exchanger and the two fans. The upper end of the switch group along the height direction of the cabinet body is connected with one end of the charging gun, and the other end of the charging gun is located outside the cabinet body. The heat exchanger is used for exchanging heat with gas in the cabinet body. The heat exchanger is located below the switch group in the height direction of the cabinet body, and the heat exchanger, one group of fans and the other group of fans are arranged in sequence in the height direction of the cabinet body. And each of the two groups of fans comprises one or more first fans, and an air outlet of the first fan in one group of fans faces the switch group so as to perform air-cooling heat dissipation on the switch group. And an air outlet of the first fan in the other group of fans faces one end of the charging gun so as to carry out air cooling heat dissipation on a gun wire connector connected with the switch group in the charging gun. And furthermore, the heat dissipation performance of the charging equipment can be improved.

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, more and more cities have begun to build super-charging cities. This has prompted the development of charging devices to high-power super-charging devices in order to achieve a "one-second one-kilometer" fast energy supplement for electric vehicles, thereby pursuing a new charging experience of "a cup of coffee, full power departure".

[0003] The power converter in the charging device is generally connected with the charging gun through a switch, which is used to control the on-off of the circuit between the power converter and the charging gun. At present, in order to meet the development needs of high-power charging devices, the output power of the power converter is continuously increasing, and accordingly, the current-carrying capacity of the switch is also continuously improved. However, the higher current-carrying capacity is easy to cause the switch to generate a large amount of heat during operation, resulting in an increase in the temperature of the switch, thereby affecting the operation safety of the charging device. UTILITY MODEL CONTENT

[0004] The present application provides a charging device, which can cool and dissipate heat for the switch group connected with the charging gun and the gun wire joint connected with the switch group in the charging gun through the two groups of fans. Moreover, the heat exchanger can cool the gas flowing through the switch group and the gun wire joint, thereby improving the heat dissipation efficiency of the two groups of fans for the switch group and the gun wire joint. Furthermore, the heat dissipation performance of the charging device can be improved, and the operation safety of the charging device can be ensured.

[0005] In a first aspect, a charging device is provided, which includes a cabinet, a switch group, a charging gun, a heat exchanger, and two groups of fans. The cabinet is used to accommodate the switch group, one end of the charging gun, the heat exchanger, and the two groups of fans. The switch group is connected with one end of the charging gun along the upper end of the height direction of the cabinet, and the other end of the charging gun is located outside the cabinet. The heat exchanger is used to exchange heat with the gas inside the cabinet. The heat exchanger is located below the switch group along the height direction of the cabinet, and the heat exchanger, one group of fans, and another group of fans are arranged in sequence along the height direction of the cabinet. Each group of fans includes one or more first fans, and the outlet of the first fan in one group of fans faces the switch group, and the outlet of the first fan in the other group of fans faces one end of the charging gun.

[0006] In the above technical solution, by arranging the heat exchanger, one set of fans, and another set of fans sequentially along the height of the cabinet, the two sets of fans can form a parallel air duct, which is then connected in series with the heat exchanger to form a series air duct. In this way, the two sets of fans can respectively drive the air inside the cabinet to provide air cooling for the switch assembly and the charging gun connector connected to the switch assembly. In practical applications, the power cable and liquid cooling pipe in the charging gun typically separate at the charging gun connector to facilitate the corresponding connection of the power cable to the switch assembly, the liquid cooling pipe, and the liquid cooling device. This results in poor contact between the power cable and the liquid cooling pipe at the charging gun connector, preventing the power cable from effectively dissipating heat through the liquid cooling pipe. Therefore, in this embodiment, by providing another set of fans for air cooling of the charging gun connector, the heat dissipation performance of the power cable at the charging gun connector can be improved.

[0007] Furthermore, the gas flowing through the charging port and switch assembly absorbs heat and then flows downwards along the height of the cabinet, eventually flowing into the heat exchanger for cooling. The cooled gas then flows back through the switch assembly and charging port under the action of two sets of fans. Compared to natural cooling, cooling the gas through the heat exchanger significantly improves the heat dissipation efficiency of the two fans on the switch assembly and charging port. This, in turn, enhances the heat dissipation performance of the charging equipment and ensures its safe operation.

[0008] In one embodiment, the cabinet includes two first side panels arranged opposite each other along a direction perpendicular to the height of the cabinet, and a switch assembly is arranged between the two first side panels. Two sets of fans are fixed to one of the first side panels, and a heat exchanger is arranged between one of the first side panels and the switch assembly along the direction in which the two first side panels are arranged.

[0009] In the above technical solution, by placing the two sets of fans and heat exchangers between the switch assembly and the same side panel of the cabinet, a more compact arrangement of the fans and heat exchangers can be achieved. This shortens the path length of gas flow between the two sets of fans and heat exchangers, allowing the two sets of fans to more quickly drive the cold gas flowing from the heat exchanger through the switch assembly and the charging gun's cable connector. This, in turn, improves the heat dissipation efficiency for the switch assembly and the cable connector. Furthermore, placing the two sets of fans on the same side panel of the cabinet also increases the structural compactness of the cabinet's interior.

[0010] In one embodiment, the cabinet includes a top plate and two first side plates. The top plate is positioned above the charging gun along the height direction of the cabinet. The two first side plates are arranged opposite each other along a direction perpendicular to the height of the cabinet, and a switch assembly is arranged between the two first side plates. One set of fans is fixed to one first side plate, and the other set of fans is fixed to the top plate. A heat exchanger is arranged between one of the first side plates and the switch assembly along the direction in which the two first side plates are arranged.

[0011] In the above technical solution, by placing the heat exchanger and one set of fans between the switch assembly and the same side panel of the cabinet, and the other set of fans between the top panel of the cabinet and the charging gun, the two sets of fans and the heat exchanger can be arranged more compactly. This shortens the path length of gas flow between the two sets of fans and the heat exchanger, allowing the two sets of fans to more quickly drive the cold gas flowing from the heat exchanger through the switch assembly and the charging gun's cable connector. This, in turn, improves the heat dissipation efficiency for the switch assembly and the cable connector. Furthermore, by placing the two sets of fans on the top and side panels of the cabinet respectively, the internal space utilization of the cabinet can also be improved.

[0012] In one embodiment, the heat exchanger includes a gas passage with an inlet and an outlet that communicate with the environment inside the cabinet. The inlet of the gas passage faces the other first side panel along the direction in which the two first side panels are arranged, and the outlet of the gas passage and the inlet of the first fan in the two sets of fans face one first side panel along the direction in which the two first side panels are arranged.

[0013] In the above technical solution, by orienting the air inlet of the gas channel towards the space below the switch assembly, the gas flowing through the gun wire connector and the switch assembly is facilitated to flow into the gas channel during its downward flow. Furthermore, by aligning the air inlets of the two sets of fans with the air outlet of the gas channel in the same direction, the speed at which the two sets of fans carry the cold gas flowing from the gas channel through the switch assembly and the gun wire connector can be accelerated. This, in turn, improves the heat dissipation efficiency for the switch assembly and the gun wire connector.

[0014] In one embodiment, the charging device further includes a second fan, which is located between the heat exchanger and another first side plate along the direction in which the two first side plates are arranged. The air inlet of the second fan faces the other first side plate along the direction in which the two first side plates are arranged, and the air outlet of the second fan faces the air outlet of the gas passage along the direction in which the two first side plates are arranged.

[0015] In the above technical solution, under the negative pressure of the second fan's inlet, the gas flowing through the gun connector and switch assembly can flow more quickly into the gas channel for cooling. Furthermore, under the negative pressure of the inlets of both fans, the cold gas flowing out of the gas channel flows again to the switch assembly and gun connector, respectively. This allows for the circulation of gas in a parallel + series hybrid airflow channel formed between the two fans and the gas channel, thereby improving the heat dissipation efficiency for the switch assembly and gun connector.

[0016] In one embodiment, the charging device further includes a second fan fixed to a first side plate. The air inlet of the second fan faces the air outlet of the gas passage along the direction in which the two first side plates are arranged, and the air outlet of the second fan faces one of the first side plates along the direction in which the two first side plates are arranged.

[0017] In the technical solution, under the negative pressure effect of the air inlet of the second fan, the gas flowing through the gun wire joint and the switch group can flow to the gas passage of the heat exchanger more quickly to be cooled. Further, under the joint effect of the second fan and the two groups of fans, the cold gas flowing out of the gas passage flows to the switch group and the gun wire joint again respectively. In turn, the circulation of the gas in the parallel+series mixed air duct formed between the two groups of fans and the gas passage can be realized, so that the heat dissipation efficiency of the switch group and the gun wire joint can be improved. In addition, by arranging the second fan on the air outlet side of the gas passage, the resistance of the cold gas flowing out of the gas passage to the two groups of fans can be reduced, so that the heat dissipation efficiency of the switch group and the gun wire joint can be further improved.

[0018] In an embodiment, the charging device further comprises a baffle arranged between the group of fans and the switch group along the direction in which the two first side plates are arranged. The baffle comprises a through hole penetrating the baffle along the direction in which the two first side plates are arranged. The baffle is located above the heat exchanger along the height direction of the cabinet body, and the surface of the baffle facing the heat exchanger and the surface of the heat exchanger facing the baffle are in contact along the height direction of the cabinet body.

[0019] Based on the above design, the baffle can block the air duct between the switch group located above the heat exchanger and the two groups of fans, so that during the downward flow of the gas flowing through the gun wire joint and the switch group, the gas can be prevented from flowing directly to the two groups of fans through the space above the heat exchanger. In turn, the heat dissipation effect of the two groups of fans on the switch group and the gun wire joint can be ensured.

[0020] In an embodiment, the charging device further comprises two second side plates arranged oppositely, the switch group is fixed to one of the second side plates, and the direction in which the two second side plates are arranged is perpendicular to the height direction of the cabinet body and the direction in which the two first side plates are arranged. Among them, one or more first fans of each group of fans comprise a plurality of first fans, the plurality of first fans of one group of fans are arranged on one first side plate along the height direction of the cabinet body, and the plurality of first fans of the other group of fans are arranged on the top plate along the direction in which the two first side plates are arranged.

[0021] Based on the above design, when the switch group is fixed to the same side plate of the cabinet body, the plurality of first fans in one group of fans can be arranged compactly near the switch group, and the plurality of first fans in the other group of fans can be arranged compactly near the gun wire joint of the charging gun, so that the heat dissipation efficiency of the two groups of fans on the switch group and the gun wire joint can be improved.

[0022] In an embodiment, the charging device further comprises two second side plates arranged oppositely, and the arrangement direction of the two second side plates is perpendicular to the height direction of the cabinet body and the arrangement direction of the two first side plates. The switch group is divided into two sub-switch groups, and the two sub-switch groups are fixed to the two second side plates. The number of the charging guns is multiple, and different sub-switch groups are connected to different charging guns in the multiple charging guns. Wherein, one or more first fans of each fan group comprises multiple first fans, and the multiple first fans are divided into two sub-fan groups. The two sub-fan groups of one fan group are arranged along the arrangement direction of the two second side plates on one first side plate, and the two sub-fan groups of the other fan group are arranged along the arrangement direction of the two second side plates on the top plate.

[0023] In the above technical solution, when the switch group is divided into two sub-switch groups and fixed to the two second side plates of the cabinet body, by arranging the two sub-fan groups of one fan group along the arrangement direction of the two second side plates, the two sub-fan groups of one fan group can respectively perform air cooling heat dissipation on the two sub-switch groups. And by arranging the two sub-fan groups of the other fan group along the arrangement direction of the two second side plates, the two sub-fan groups of the other fan group can respectively perform air cooling heat dissipation on the gun wire joints connected by the two sub-switch groups. Further, the heat dissipation performance of the charging device can be improved.

[0024] In an embodiment, the charging device further comprises a power converter and two groups of metal connecting pieces fixed to the inner surface of the cabinet body. The upper end of the switch group along the height direction of the cabinet body is connected to one end of the charging gun through one group of metal connecting pieces, and the lower end of the switch group along the height direction of the cabinet body is connected to the power converter through the other group of metal connecting pieces. Along the direction perpendicular to the height direction of the cabinet body, the projection of one fan group respectively overlaps with the projection of at least one group of metal connecting pieces and the projection of the switch group.

[0025] Based on the above design, one fan group can be arranged near the connection area of the switch group and the metal connecting piece, so that when the switch group and the metal connecting piece are lap-jointed and fixed, one fan group can perform air cooling heat dissipation on the lap-jointed area of the switch group, thereby alleviating the problem of serious heating of the switch group due to the large impedance of the lap-jointed area of the switch group. Further, the heat dissipation performance of the charging device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a charging system provided by an embodiment of the present application.

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

[0028] Figure 3 is a structural schematic diagram of a charging device provided by an embodiment of the present application. Figure 2 is a side view structural schematic diagram of the charging device shown in

[0029] Figure 4 yes Figure 3 A schematic diagram of the gas flow inside the cabinet of the charging device shown.

[0030] Figure 5 This is another example provided in the embodiments of this application. Figure 2 The diagram shows a side view of the charging device.

[0031] Figure 6 yes Figure 5 A schematic diagram of the gas flow inside the cabinet of the charging device shown.

[0032] Figure 7 This is a three-dimensional structural schematic diagram of another charging device provided in an embodiment of this application.

[0033] Figure 8 This is an example provided in the embodiments of this application. Figure 7 The diagram shows a side view of the charging device.

[0034] Figure 9 yes Figure 8 A schematic diagram of the gas flow inside the cabinet of the charging device shown.

[0035] Figure 10 This is a three-dimensional structural schematic diagram of another charging device provided in the embodiments of this application.

[0036] Figure 11 This is an example provided in the embodiments of this application. Figure 10 A side view of the charging device.

[0037] Figure 12 This is a three-dimensional structural schematic diagram of another charging device provided in the embodiments of this application. Detailed Implementation

[0038] To facilitate understanding of the embodiments of this application, the following points will be explained before introducing the embodiments of this application.

[0039] The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", and "outer" used in the embodiments of this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] The term "perpendicular" in this application is not strictly perpendicular, but rather within the allowable tolerance range. Similarly, "parallel" is not strictly parallel, but also within the allowable tolerance range.

[0041] In the embodiments of the present application, the same reference signs represent the same component or the same part. 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.

[0042] The technical solutions in the present application will be described below with reference to the drawings.

[0043] 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.

[0044] Figure 1 is a schematic diagram of a scenario in which a charging device 10 charges an electric vehicle 20.

[0045] In combination with (a) and (b) in Figure 1 , the charging device 10 is configured to receive alternating current output by the power grid 30, and 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.

[0046] In some embodiments, as shown in (a) in Figure 1 , the charging device 10 is a split charging device. Specifically, the charging device 10 includes a charging host 11, one or more charging terminals 12, and one or more charging guns 13.

[0047] 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 inside the charging host cabinet. Each charging terminal 12 is fixed with at least one charging gun 13 of the one or more charging guns 13. The output ends of the plurality of power converters are connected to the charging guns 13 fixed to each charging terminal 12.

[0048] It should be understood that, in the embodiments of the present application, the plurality of power converters can include one or more alternating current-direct current (AC-DC) converters and one or more 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 through the charging terminal 12.

[0049] In a specific implementation, each AC-DC converter is configured to convert AC power from the power grid 30 into DC power and output the DC power to a DC bus, and each DC-DC converter is configured to further convert the DC power obtained from the DC bus into power and deliver the power to a charging gun 13 fixed to the charging terminal 12. The charging gun 13 is configured to deliver the received DC power to the electric vehicle 20 to charge the electric vehicle 20. For example, one charging gun 13 or multiple charging guns 13 can deliver DC power to one electric vehicle 20 at the same time.

[0050] It should also 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.

[0051] For example, the charging gun 13 includes a gun wire and a charging gun head. One end of the gun wire is located inside the charging terminal cabinet, and the other end of the gun wire is electrically connected to the power converter in the charging main cabinet through a power cable. The other end of the gun wire is located outside the charging terminal cabinet and is connected to the charging gun head. The charging gun head is configured to be plugged into the charging socket of the electric vehicle.

[0052] In an embodiment, the charging device 10 further includes power distribution devices and two groups of copper bars, and the power distribution devices are arranged inside the charging terminal cabinet. The power distribution devices include a switch. One end of the switch is fixedly connected to one group of copper bars, and the power converter is connected to the one group of copper bars through a power cable, so as to realize electrical connection between the power converter and the switch. The other end of the switch is fixedly connected to the other group of copper bars, so as to realize electrical connection between the switch and the gun wire through the other group of copper bars. The switch is mainly used to control the on-off of the circuit between the power converter and the charging gun 13. The switch can be a contactor or a relay, for example.

[0053] It should be understood that, in the embodiments of the present application, the power distribution devices can further include a shunt and a fuse to detect the current and provide overcurrent protection for the circuit between the power converter and the charging gun 13.

[0054] In the embodiments of the present application, the electric vehicle 20 is a vehicle driven by electric energy. The electric vehicle 20 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.

[0055] In some other embodiments, as shown in (b) of FIG. 1, the charging device 10 is an integrated charging device. Specifically, the man-machine interface, the charging control unit, the metering and charging unit, and the power distribution device in the charging terminal 12 can be arranged together with the plurality of power converters in the interior of the charging main cabinet. In this case, the charging device 10 can only include the charging main 11 and one or more charging guns 13 fixed to the charging main 11, and does not include the charging terminal 12.

[0056] As described in the background section above, as the charging device 10 evolves into a super-charging type charging device, the output power of the power converter is continuously increased, and accordingly, the current-carrying capacity of the switch connected between the power converter and the charging gun 13 is continuously increased, which is prone to cause the switch to generate a relatively high heat during operation. In addition, since the impedance at the joint between the two ends of the switch and the copper bar is relatively large, as the output power of the power converter increases, the joint area between the switch and the copper bar generates a relatively serious heat. The above factors are prone to cause the temperature of the switch to increase during operation, thereby affecting the operation safety of the charging device.

[0057] Based on the above, the embodiments of the present application provide a charging device, which includes a cabinet, a switch group, a charging gun, a heat exchanger, and two groups of fans. The cabinet is used to accommodate the switch group, one end of the charging gun, the heat exchanger, and the two groups of fans. The switch group is connected to one end of the charging gun at the upper end of the cabinet in the height direction of the cabinet, and the other end of the charging gun is located outside the cabinet. The heat exchanger is used to exchange heat with the gas in the interior of the cabinet. The heat exchanger is located below the switch group in the height direction of the cabinet, and the heat exchanger, one group of fans, and the other group of fans are arranged in sequence in the height direction of the cabinet. Each group of fans includes one or more first fans, and the air outlets of the first fans in one group of fans are directed towards the switch group, and the air outlets of the first fans in the other group of fans are directed towards one end of the charging gun.

[0058] In the above technical solution, by arranging the heat exchanger, one group of fans, and the other group of fans in sequence in the height direction of the cabinet, the two groups of fans can form a parallel air duct and then form a series air duct with the heat exchanger. In this way, the two groups of fans can respectively drive the gas in the interior of the cabinet to perform air cooling and heat dissipation on the switch group and the gun wire joint in the charging gun connected to the switch group. Since in actual application, the power cable and the liquid cooling pipe in the gun wire generally start to separate at the gun wire joint, so as to correspondingly connect the power cable and the switch group, and the liquid cooling pipe and the liquid cooling device. This results in poor adhesion of the power cable and the liquid cooling pipe at the gun wire joint, and the power cable cannot be well cooled by the liquid cooling pipe. Therefore, in the embodiments of the present application, the other group of fans is arranged to perform air cooling and heat dissipation on the gun wire joint, so as to improve the heat dissipation performance of the power cable at the gun wire joint.

[0059] Furthermore, the gas flowing through the charging port and switch assembly can flow downwards along the height of the cabinet, thus flowing into the heat exchanger for cooling. The cooled gas, after being cooled by the heat exchanger, can then flow back through the switch assembly and charging port separately under the action of two sets of fans. Compared to natural cooling, cooling the gas through the heat exchanger accelerates the heat dissipation efficiency of the two sets of fans on the switch assembly and charging port. This, in turn, improves the heat dissipation performance of the charging equipment and ensures its safe operation.

[0060] The charging device provided in the embodiments of this application will now be described in conjunction with the accompanying drawings.

[0061] Figure 2 This is a three-dimensional structural diagram of a charging device 400 provided in an embodiment of this application. Figure 3 and Figure 5 One of the embodiments provided in this application is Figure 2 The diagram shows a side view of the charging device 400. Figure 4 yes Figure 3 A schematic diagram of the gas flow inside the cabinet of the charging device 400 shown. Figure 6 yes Figure 5 A schematic diagram of the gas flow inside the charging device 400 is shown.

[0062] Combination Figure 2 , Figure 3 and Figure 5 The charging device 400 includes a cabinet 410, a switch assembly 420, and a charging gun 430. The cabinet 410 is used to house one end 431 of the switch assembly 420 and the charging gun 430.

[0063] Specifically, see Figure 2 The cabinet 410 includes a first side panel 411a, a first side panel 411b, a second side panel 412a, a second side panel 412b, a top panel 413, and a bottom panel 414. The top panel 413 and the bottom panel 414 are arranged opposite each other along a first direction, the first side panels 411a and 411b are arranged opposite each other along a second direction, and the second side panels 412a and 412b are arranged opposite each other along a third direction. Thus, the first side panels 411a, 411b, 412a, 412b, the top panel 413, and the bottom panel 414 can be mutually enclosed to form a receiving cavity for the cabinet 410, within which the switch assembly 420 and one end 431 of the charging gun 430 are located.

[0064] It should be understood that in the embodiments of this application, the first direction, the second direction, and the third direction are perpendicular to each other. The first direction can also be referred to as the height direction of the cabinet 410, and the second direction and the third direction can be referred to as the length direction and width direction of the cabinet 410, respectively.

[0065] Continue to combineFigure 2 、 Figure 3 and Figure 5 The upper end 422 of the switch group 420 in the first direction is connected to one end 431 of the charging gun 430. The other end 432 of the charging gun 430 is located outside the cabinet 410, and is used to connect to an electric vehicle to output electric energy to the electric vehicle.

[0066] In a specific implementation, in one embodiment, referring to Figure 2 The charging device 400 further includes a power converter 440, and the lower end 422 of the switch group 420 in the third direction is connected to the power converter 440. In this way, the electric energy output by the power converter 440 can be output to the charging gun 430 through the switch group 420, and then output to the electric vehicle through the charging gun 430.

[0067] It should be understood that in the embodiments of the present application, the power converter 440 can be an AC-DC converter or a DC-DC converter, and the number of power converters 440 in the charging device 400 can be one or more. The specific description of the power converter 440 can be referred to the related description of the embodiment shown in Figure 1 , which will not be described here.

[0068] It should also be understood that in a specific implementation, the power converter 440 can be located outside the cabinet 410, or can also be located inside the cabinet 410.

[0069] For example, in one embodiment, referring to Figure 2 The power converter 440 is located outside the cabinet 410. That is, the charging device 400 is a split charging device as shown in (a) of Figure 1 , and the cabinet 410 is a charging terminal cabinet in the split charging device. In one example, the charging device 400 can further include a charging host cabinet, the power converter 440 is located in the charging host cabinet, and the power converter 440 can be connected to the lower end 422 of the switch group 420 in the cabinet 410 through a power cable.

[0070] In another embodiment, the power converter 440 can be located inside the cabinet 410 together with the switch group 420 and one end 431 of the charging gun 430. That is, the charging device 400 is an integrated charging device as shown in (b) of Figure 1 , and the cabinet 410 is a charging host cabinet in the integrated charging device. In one example, the cabinet 410 can include two chambers arranged in the second direction. Among them, the power converter 440 is located in one of the chambers, and the switch group 420 and one end 431 of the charging gun 430 are located in the other chamber.

[0071] It should be noted that, for the convenience of description and understanding, the embodiments of the present application are described by taking the power converter 440 as being located outside the cabinet 410 as an example, that is, by taking the charging device 400 as a split charging device as an example.

[0072] Exemplarily, the switch group 420 can include a plurality of switches for controlling the on-off of the circuit between the power converter 440 and the charging gun 430. That is, the plurality of switches can be Figure 1 The power distribution device mentioned in the illustrated embodiment.

[0073] In an embodiment, the charging gun 430 includes a gun wire and a charging gun head. Wherein, one end of the gun wire is located inside the cabinet 410, and the one end of the gun wire is connected to the upper end 422 of the switch group 420. The other end of the gun wire and the charging gun head are located outside the cabinet 410, the other end of the gun wire is connected to the charging gun head, and the charging gun head is used to connect with the electric vehicle to deliver the electric energy output by the power converter 440 to the electric vehicle. That is, in the embodiments of the present application, one end 431 of the charging gun 430 can be understood as one end of the gun wire, that is, can be understood as a gun wire connector in the charging gun 430 connected to the switch group 420, and the other end 432 of the charging gun 430 can be understood as the charging gun head used to connect with the electric vehicle.

[0074] In an embodiment, in combination with Figure 3 and Figure 5 , the charging device 400 further includes two groups of metal connecting pieces, that is, a group of metal connecting pieces 451 and a group of metal connecting pieces 452. The two groups of metal connecting pieces are fixed to the inner surface of the cabinet 410, and the upper end 422 of the switch group 420 along the first direction is connected to one end 431 of the charging gun 430 through the group of metal connecting pieces 452, and the lower end 421 of the switch group 420 along the first direction is connected to the power converter 440 through the group of metal connecting pieces 451.

[0075] Specifically, in combination with Figure 2 , Figure 3 and Figure 5 , the group of metal connecting pieces 451 and the group of metal connecting pieces 452 can be respectively fixed to the inner surface of the second side plate 412a. The upper end 422 of the switch group 420 along the first direction is lap-fitted and fixed with the metal connecting piece 452, and the lower end 421 of the switch group 420 along the first direction is lap-fitted and fixed with the metal connecting piece 451. In this way, the switch group 420 can be fixed to the second side plate 412a through the two groups of metal connecting pieces. And, the group of metal connecting pieces 452 is connected to one end 431 of the charging gun 430, and the group of metal connecting pieces 451 is connected to the power converter 440 outside the cabinet 410 through the power cable L, so that the switch group 420 can be electrically connected to the power converter 440 and one end 431 of the charging gun 430 through the two groups of metal connecting pieces.

[0076] It should be understood that in the embodiments of the present application, the set of metal connectors 451 can include a plurality of metal connectors, and the lower end 421 of the switch group 420 along the first direction is connected to the positive output end and the negative output end of the power converter 440 through the plurality of metal connectors. Similarly, the set of metal connectors 452 can also include a plurality of metal connectors, and the upper end 422 of the switch group 420 along the first direction is connected to the positive power cable and the negative power cable in the charging gun 430 through the plurality of metal connectors.

[0077] Exemplarily, each metal connector in the two sets of metal connectors can be a copper bar, an aluminum bar, an iron bar, or the like metal connector bar capable of transmitting current.

[0078] Continuing to combine Figure 2 , Figure 3 and Figure 5 , the charging device 400 further includes a heat exchanger 460, and the cabinet 410 is further used to accommodate the heat exchanger 460. That is, the heat exchanger 460, the switch group 420, and one end 431 of the charging gun 430 are located together in the accommodation cavity of the cabinet 410. Among them, the heat exchanger 460 is used to exchange heat with the gas inside the cabinet 410, so as to reduce the gas temperature of the environment where the switch group 420 and one end 431 of the charging gun 430 are located.

[0079] In a specific implementation, in an embodiment, in combination with Figure 3 and Figure 5 , the heat exchanger 460 includes a cooling liquid passage 461 and a gas passage 462. Among them, the cooling liquid passage 461 is used to exchange heat with the gas passage 462, and the air inlet of the gas passage 462 and the air outlet of the gas passage 462 are both in communication with the environment inside the cabinet 410.

[0080] Based on the above design, the gas inside the cabinet 410 can circulate in the gas passage 462, and in the process of the flow of the gas, the cooling liquid circulating in the cooling liquid passage 461 can absorb the heat carried by the gas in the gas passage 462, so as to cool the gas in the gas passage 462. In turn, the gas inside the cabinet 410 can be at a lower temperature. And compared with the natural cooling mode, the speed of cooling the gas inside the cabinet 410 by the heat exchanger 460 is faster.

[0081] In an embodiment, in combination with Figure 2 , Figure 3 and Figure 5 , the heat exchanger 460 is located below the switch group 420 along the third direction. In this way, the risk of short circuit of electronic devices such as switches caused by the cooling liquid leaked from the cooling liquid passage 461 flowing into the switch group 420 and the charging gun 430 can be reduced, thereby improving the operation safety of the charging device 400.

[0082] continuously combined Figure 2 、 Figure 3 and Figure 5 , the charging device 400 further comprises two groups of fans, that is, the charging device 400 further comprises a group of fans 470 and a group of fans 480. The cabinet 410 is further used to accommodate the group of fans 470 and the group of fans 480, that is, the two groups of fans and the heat exchanger 460, the switch group 420 and one end 431 of the charging gun 430 are located in the accommodating cavity of the cabinet 410. Each of the two groups of fans comprises one or more first fans, that is, the group of fans 470 comprises one or more first fans 471, and the group of fans 480 comprises one or more first fans 481.

[0083] Among them, the heat exchanger 460, the group of fans 470 and the group of fans 480 are arranged in sequence along the third direction, and the air outlet of the first fan 471 in the group of fans 470 faces the switch group 420, and the air outlet of the first fan 481 in the group of fans 480 faces one end 431 of the charging gun 430.

[0084] In the above technical solution, by arranging the heat exchanger 460, the group of fans 470 and the group of fans 480 in sequence along the height direction of the cabinet 410, and arranging the air outlet of the group of fans 470 to face the switch group 420 and the air outlet of the group of fans 480 to face one end 431 of the charging gun 430, the air duct formed by the two groups of fans can be connected in parallel and then connected in series with the heat exchanger 460. That is, the charging device 400 adopts a hybrid air duct design of parallel connection + series connection. In this way, the two groups of fans can respectively drive the gas inside the cabinet 410 to air-cool and dissipate heat for the switch group 420 and one end 431 of the charging gun 430, that is, for the gun wire joint in the charging gun 430 connected with the switch group 420.

[0085] It should be understood that, in specific implementation, in combination with Figure 3 and Figure 5 , the gun wire of the charging gun 430 comprises a protective sleeve 433 and a power cable 434, a communication cable 435 and a liquid cooling pipe (not shown in the figure) located in the protective sleeve 433, and the charging gun head comprises a charging plug and a communication plug. Among them, the power cable 434 is connected between the upper end 422 of the switch group 420 along the first direction and the charging plug in the charging gun head. The communication cable 435 is connected between the communication module 4201 in the charging device 400 and the communication plug in the charging gun head. The liquid cooling pipe and the power cable 434 are in thermal contact, and the liquid cooling pipe is further connected with a liquid cooling device outside the charging gun 430 to provide liquid cooling and heat dissipation for the power cable 434 through the cooling liquid provided by the liquid cooling device.

[0086] Based on the above analysis, at one end 431 of the charging gun 430, i.e. at the gun wire joint where the charging gun 430 is connected to the switch group 420, the protective sleeve 433 of the gun wire is usually stripped for a certain length, so that the power cable 434, the communication cable 435 and the liquid cooling pipe can be separated from the stripped end, thereby facilitating the connection of the power cable 434 with the switch group 420, the connection of the communication cable 435 with the communication module 4201 and the connection of the liquid cooling pipe with the liquid cooling device. However, at the stripped end of the above-mentioned gun wire joint, the power cable 434 and the liquid cooling pipe are poorly adhered, which causes the power cable 434 located in the stripped section to be unable to dissipate heat through the liquid cooling pipe. Therefore, in the embodiment of the present application, the gun wire joint is air-cooled and heat-dissipated by a group of fans 480, which can improve the heat dissipation performance of the power cable 434 at the gun wire joint.

[0087] Further, the gas flowing through the gun wire joint and the switch group 420 can flow downward along the height direction of the cabinet 410 after absorbing heat, so as to flow into the heat exchanger 460 together for cooling. The cold gas cooled by the heat exchanger 460 can flow to the gun wire joint and the switch group 420 again under the action of the two groups of fans. Compared with cooling the gas by natural cooling, cooling the gas by the heat exchanger 460 can improve the heat dissipation efficiency of the two groups of fans on the switch group 420 and the gun wire joint. Further, the heat dissipation performance of the charging device 400 can be improved, and the operation safety of the charging device 400 can be ensured.

[0088] The specific arrangement of the heat exchanger 460 and the two groups of fans inside the cabinet 410 will be further described below.

[0089] In one embodiment, in combination with Figure 2 , Figure 3 and Figure 5 , the cabinet 410 includes a first side plate 411a and a first side plate 411b arranged opposite in the second direction, and the switch group 420 is arranged between the first side plate 411a and the first side plate 411b. Wherein, one group of fans 470 and one group of fans 480 are fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 in the second direction. That is, the two groups of fans and the heat exchanger 460 are located between the switch group 420 and the first side plate 411a in the second direction.

[0090] In the technical solution, the two groups of fans and the heat exchanger 460 are arranged between the same side plate of the switch group 420 and the cabinet 410, so that the two groups of fans and the heat exchanger 460 are arranged compactly. In this way, the path length of the gas flowing between the two groups of fans and the heat exchanger 460 can be shortened, so that the two groups of fans can drive the cold gas flowing out of the heat exchanger 460 to flow through the switch group 420 and the gun wire joint of the charging gun 430 more quickly. In turn, the heat dissipation efficiency of the switch group 420 and the gun wire joint can be improved. In addition, by arranging the two groups of fans on the same side plate of the cabinet 410, the structural compactness of the interior of the cabinet 410 can be improved.

[0091] Further, in an embodiment, in combination with Figure 3 and Figure 5 , the air inlet of the gas passage 462 of the heat exchanger 460 in the second direction faces the first side plate 411b, and the air outlet of the gas passage 462 of the heat exchanger 460 in the second direction and the air inlet of the first fan of the two groups of fans both face the first side plate 411a.

[0092] For example, as shown in Figure 3 and Figure 5 , taking an example that one group of fans 470 includes a first fan 471 and one group of fans 480 includes a first fan 481, the air inlet of the first fan 471 faces the switch group 420 in the second direction, and the air inlet of the first fan 481 faces one end 431 of the charging gun 430 in the second direction. The air inlet of the gas passage 462 faces the first side plate 411b in the second direction, that is, the air inlet of the gas passage 462 faces the space below the switch group 420. And the air outlet of the gas passage 462 in the second direction, the air inlet of the first fan 471 and the air inlet of the first fan 481 face the first side plate 411a. In this way, a parallel+series mixed air duct can be formed between the first fan 471, the first fan 481 and the gas passage 462, and the air duct between the air outlet of the first fan 471, the air outlet of the first fan 481 and the air inlet of the gas passage 462 is E-shaped.

[0093] In the technical solution, by arranging the air inlet of the gas passage 462 to face the space below the switch group 420, the gas flowing through the gun wire joint and the switch group 420 can be conveniently introduced into the gas passage 462 during downward flow. And by arranging the air inlets of the two groups of fans and the air outlet of the gas passage 462 to face the same direction, the speed of the cold gas flowing out of the gas passage 462 and flowing through the switch group 420 and the gun wire joint driven by the two groups of fans can be accelerated. In turn, the heat dissipation efficiency of the switch group 420 and the gun wire joint can be improved.

[0094] In an embodiment, refer to Figure 3, in order to strengthen the gas flow through the gun wire joint and the switch group 420 to the gas passage 462 of the heat exchanger 460, the charging device 400 further comprises a second fan 490. Wherein, the second fan 490 is located between the heat exchanger 460 and the first side plate 411b along the second direction. And the air inlet of the second fan 490 along the second direction is towards the first side plate 411b, that is, the air inlet of the second fan 490 is towards the space below the switch group 420. The air outlet of the second fan 490 along the second direction is towards the air inlet of the gas passage 462.

[0095] Based on the above design, under the negative pressure effect of the air inlet of the second fan 490, the gas flowing through the gun wire joint and the switch group 420 can flow faster to the gas passage 462 for cooling in the process of flowing downward. Further, under the negative pressure effect of the air inlets of the two groups of fans, the cold gas flowing out of the gas passage 462 can flow to the switch group 420 and the gun wire joint respectively. In turn, the gas inside the cabinet 410 can circulate in the mixed air duct formed between the two groups of fans and the gas passage 462 in parallel + series, thereby improving the heat dissipation efficiency of the switch group 420 and the gun wire joint.

[0096] Wherein, Figure 3 The flow direction of the gas circulating flow in the mixed air duct shown can be as shown by the dashed arrows in Figure 4 .

[0097] In another embodiment, referring to Figure 5 , the second fan 490 is fixed to the first side plate 411a. And the air inlet of the second fan 490 along the second direction is towards the air outlet of the gas passage 462, and the air outlet of the second fan 490 along the second direction is towards the first side plate 411a.

[0098] Based on the above design, under the negative pressure effect of the air inlet of the second fan 490, the gas flowing through the gun wire joint and the switch group 420 can flow faster to the gas passage 462 for cooling in the process of flowing downward. Further, under the negative pressure effect of the air inlets of the two groups of fans, the cold gas flowing out of the gas passage 462 can flow to the switch group 420 and the gun wire joint respectively. In turn, the gas inside the cabinet 410 can circulate in the mixed air duct formed between the two groups of fans and the gas passage 462 in parallel + series, thereby improving the heat dissipation efficiency of the switch group 420 and the gun wire joint. In addition, by arranging the second fan 490 on the side of the air outlet of the gas passage 462, the resistance of the cold gas flowing out of the gas passage 462 to the two groups of fans can be reduced. In turn, the heat dissipation efficiency of the switch group 420 and the gun wire joint can be further improved.

[0099] Wherein, Figure 5 The flow direction of the gas circulating flow in the mixed air duct shown can be as shown by the dashed arrows in Figure 6 .

[0100] Figure 7 is another structural schematic diagram of a charging device 400 provided by an embodiment of the present application. Figure 8 is an example of the charging device 400 provided by an embodiment of the present application. Figure 7 is a side structural schematic diagram of the charging device 400 shown in FIG. 1. Figure 9 is Figure 8 is a gas flow schematic diagram of the charging device 400 shown in FIG. 1.

[0101] The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. Figure 2 to Figure 6 The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction. Figure 7 The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. Figure 8 The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction. Figure 3 to Figure 6 The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. Figure 7 The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction. Figure 8 The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction.

[0102] The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction.

[0103] The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction. Figure 8 The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction. The same as the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the switch group 420 is arranged between the first side plate 411a and the first side plate 411b, and the group of fans 470 is fixed to the first side plate 411a, and the heat exchanger 460 is located between the first side plate 411a and the switch group 420 along the second direction.

[0104] The difference between the embodiment shown in FIG. 2 and FIG. 3 and the embodiment shown in FIG. 1 is that, in the charging device 400 shown in FIG. 2 and FIG. 3, the cabinet 410 further comprises a top plate 413, and the top plate 413 is located above the charging gun 430 along the first direction. Figure 8As shown, still taking the example that one first fan 471 is included in the first group of fans 470 and one first fan 481 is included in the second group of fans 480, the air inlet of the first fan 471 faces the switch group 420 along the second direction, and the air inlet of the first fan 481 faces one end 431 of the charging gun 430 along the first direction. The air inlet of the gas passage 462 faces the first side plate 411b along the second direction. And the air outlet of the gas passage 462, the air inlet of the first fan 471 and the air inlet of the first fan 481 all face the first side plate 411a along the second direction.

[0105] Based on the above design, a parallel+series mixed air passage can be formed between the first fan 471, the first fan 481 and the gas passage 462, and the air passage between the air outlet of the first fan 471, the air outlet of the first fan 481 and the air inlet of the gas passage 462 is F-shaped. In this way, the speed of the cold gas flowing out of the gas passage 462 and flowing through the switch group 420 and the gun wire joint driven by the two groups of fans can be accelerated. For specific description, please refer to Figure 2 to Figure 6 The related description of the embodiment shown will not be repeated here.

[0106] Further, similar to the embodiment shown in Figure 2 to Figure 6 , in the charging device 400 shown in Figure 8 , through the joint action of the second fan 490 and the two groups of fans, the gas inside the cabinet 410 can circulate in the parallel+series mixed air passage formed between the two groups of fans and the gas passage 462, thereby improving the heat dissipation efficiency of the switch group 420 and the gun wire joint. Among them, Figure 8 The circulation flow direction of the gas in the mixed air passage shown can be as shown by the dashed arrows in Figure 9 .

[0107] The above describes the specific arrangement of the heat exchanger 460 and the two groups of fans inside the cabinet 410. The following describes other structures in the charging device 400.

[0108] In one embodiment, in combination with Figure 3 , Figure 5 and Figure 8 , the charging device 400 further includes a baffle 4101 arranged between the first group of fans 470 and the switch group 420 along the second direction. The baffle 4101 includes a through hole 41011 penetrating the baffle 4101 along the second direction. In this way, the air outlet of the first group of fans 470 can be in communication with the environment where the switch group 420 is located through the baffle 4101.

[0109] Further, the baffle 4101 is located above the heat exchanger 460 along the first direction. And along the first direction, the surface of the baffle 4101 towards the heat exchanger 460 and the surface of the heat exchanger 460 towards the baffle 4101 are in contact. That is, the lower surface of the baffle 4101 and the upper surface of the heat exchanger 460 are in contact along the first direction.

[0110] Based on the above design, the air duct between the switch group 420 and the two groups of fans located above the heat exchanger 460 can be blocked by the baffle 4101, so that during the process of the gas flowing downwards through the gun connector and the switch group 420, the gas can be prevented from flowing directly to the two groups of fans through the space above the heat exchanger 460. Further, the heat dissipation effect of the two groups of fans on the switch group 420 and the gun connector can be ensured.

[0111] Further, in one example, the charging device 400 further comprises a baffle 4102. The baffle 4102 is located between the switch group 420 and the first side plate 411b along the second direction. That is, the baffle 4101 and the baffle 4102 are oppositely arranged between the first side plate 411a and the first side plate 411b along the second direction, and the switch group 420 is arranged between the baffle 4101 and the baffle 4102. In addition, the baffle 4101 and the baffle 4102 are both made of insulating material, for example, made of polycarbonate (PC) material. In this way, the switch group 420 can be insulated and protected by the two baffles to prevent safety problems caused by electric leakage of the switch group 420.

[0112] In one embodiment, in combination with Figure 3 , Figure 5 and Figure 8 , when the upper end 422 of the switch group 420 along the first direction is connected to one end 431 of the charging gun 430 through a group of metal connecting pieces 452, and the lower end 421 of the switch group 420 along the first direction is connected to the power converter 440 through a group of metal connecting pieces 451, along a direction perpendicular to the third direction, the projection of the group of fans 470 respectively overlaps the projection of at least one of the two groups of metal connecting pieces and the projection of the switch group 420.

[0113] For example, as shown in Figure 3 , Figure 5 and Figure 8 , taking the case that the group of fans 470 is located between the switch group 420 and the first side plate 411a as an example, the projection of the group of fans 470 along the second direction overlaps the projection of at least one of the group of metal connecting pieces 451 and the group of metal connecting pieces 452, and the projection of the switch group 420. That is, at least one of the projection of the connection area of the switch group 420 and the group of metal connecting pieces 452 and the projection of the connection area of the switch group 420 and the group of metal connecting pieces 451 overlaps the projection of the group of fans 470.

[0114] Based on the above design, the group of fans 470 can be arranged near the connection area of the switch group 420 and the metal connecting piece, so that when the switch group 420 and the metal connecting piece are lap-jointed and fixed, the group of fans 470 can perform air cooling and heat dissipation on the lap-jointed area of the switch group 420, thereby relieving the problem of serious heating of the switch group 420 due to the large impedance of the lap-jointed area of the switch group 420. Further, the heat dissipation performance of the charging device 400 can be improved.

[0115] It should be understood that the above embodiments are described by taking an example in which each of the group of fans 470 and the group of fans 480 includes one first fan. The charging device 400 is further described by taking an example in which each of the group of fans 470 and the group of fans 480 includes a plurality of first fans.

[0116] Figure 10 FIG. 13 is another three-dimensional structural schematic diagram of a charging device 400 provided by an embodiment of the present application. Figure 11 FIG. 14 is a three-dimensional structural schematic diagram of a charging device 400 provided by an embodiment of the present application. Figure 10 FIG. 15 is a side view structural schematic diagram of the charging device 400.

[0117] In an embodiment, in combination with Figure 10 and Figure 11 The cabinet 410 includes a second side plate 412a and a second side plate 412b arranged opposite to each other along the third direction, and the switch group 420 is fixed to the second side plate 412a. The group of fans 470 includes a plurality of first fans 471, and the group of fans 480 includes a plurality of first fans 481. The plurality of first fans 471 are arranged on the first side plate 411a along the first direction, and the plurality of first fans 481 are arranged on the top plate 413 along the second direction.

[0118] Based on the above design, when the switch group 420 is fixed to the same side plate of the cabinet 410, the plurality of first fans 471 in the group of fans 470 can be arranged compactly near the switch group 420, and the plurality of first fans 481 in the group of fans 480 can be arranged compactly near the gun wire joint of the charging gun 430. In this way, the heat dissipation efficiency of the two groups of fans on the switch group 420 and the gun wire joint can be improved, and the space utilization rate inside the cabinet 410 can be improved.

[0119] It should be understood that in specific implementation, the number of charging guns 430 connected by the switch group 420 can be one or more. For example, when the number of charging guns 430 connected by the switch group 420 is two, the switch group 420 can be divided into two sub-switch groups, and the two sub-switch groups are arranged on the second side plate 412a along the second direction. The upper ends of the two sub-switch groups along the first direction can be connected to the two charging guns 430 one by one.

[0120] It should be understood that any omissions or incomplete details regarding the charging device 400 mentioned above can be found in [reference needed]. Figure 2 to Figure 9 The relevant descriptions of the embodiments shown will not be repeated here.

[0121] Figure 12 This is a three-dimensional structural schematic diagram of another charging device 400 provided in the embodiments of this application.

[0122] and Figure 11 The switch assembly 420 shown is fixed to the second side plate 412a differently, in Figure 12 In the illustrated embodiment, the switch group 420 is divided into two sub-switch groups, which are respectively fixed to the second side plate 412a and the second side plate 412b. Furthermore, there are multiple charging guns 430, with different sub-switch groups connected to different charging guns 430 among the multiple charging guns 430.

[0123] For example, such as Figure 12 As shown, the switch group 420 includes sub-switch groups 420a and 420b, and the charging device 400 includes two charging guns 430, namely charging gun 430a and charging gun 430b. Sub-switch group 420a is fixed to the second side plate 412a, and sub-switch group 420b is fixed to the second side plate 412b. The lower end 421a of sub-switch group 420a along the first direction is connected to the power converter 440, and the upper end 422a of sub-switch group 420a along the first direction is connected to one end 431a of charging gun 430a. The other end 432a of charging gun 430a is located outside the cabinet 410. Similarly, the lower end 421b of the sub-switch group 420b along the first direction is connected to the power converter 440, the upper end 422b of the sub-switch group 420b along the first direction is connected to one end 431b of the charging gun 430b, and the other end 432b of the charging gun 430b is located outside the cabinet 410.

[0124] Furthermore, a fan group 470 includes a plurality of first fans 471, which are divided into sub-fan groups 470a and sub-fan groups 470b. Sub-fan group 470a includes at least one first fan 471a, and sub-fan group 470b includes at least one first fan 471b. Sub-fan groups 470a and 470b are arranged along a third direction on a first side plate 411a. Similarly, a fan group 480 includes a plurality of first fans 481, which are divided into sub-fan groups 480a and 480b. Sub-fan group 480a includes at least one first fan 481a, and sub-fan group 480b includes at least one first fan 481b. Sub-fan groups 480a and 480b are arranged along a third direction on a top plate 413.

[0125] In the above technical solution, when the switch group 420 is divided into two sub-switch groups and fixed to the two second side plates of the cabinet body 410, by arranging the two sub-fan groups of the one group of fans 470 along the direction in which the two second side plates are arranged, the two sub-fan groups in the one group of fans 470 can respectively perform air cooling heat dissipation on the two sub-switch groups. Moreover, by arranging the two sub-fan groups of the one group of fans 480 along the direction in which the two second side plates are arranged, the two sub-fan groups in the one group of fans 480 can respectively perform air cooling heat dissipation on the gun wire joints connected with the two sub-switch groups. Furthermore, the heat dissipation performance of the charging device can be improved.

[0126] In specific implementation, for example, in the one group of fans 470, the outlet of the first fan 471a in the sub-fan group 470a faces the sub-switch group 420a, and the outlet of the first fan 471b in the sub-fan group 470b faces the sub-switch group 420b. In addition, in the one group of fans 480, the outlet of the first fan 481a in the sub-fan group 480a faces one end 431a of the charging gun 430a connected with the sub-switch group 420a, and the outlet of the first fan 481b in the sub-fan group 480b faces one end 431b of the charging gun 430b connected with the sub-switch group 420b.

[0127] It should be understood that the arrangement of the sub-fan group 480a and the sub-fan group 480b in the one group of fans 480 on the top plate 413 is merely illustrative and is not a limitation of the present application. For example, in some other embodiments, when the sub-switch group 420a and the sub-switch group 420b in the switch group 420 are respectively fixed to the second side plate 412a and the second side plate 412b, the sub-fan group 480a and the sub-fan group 480b in the one group of fans 480 can also be arranged along the third direction on the first side plate 411a.

[0128] It should also be understood that the details not described above about the charging device 400 can be referred to the related description of the embodiments shown in Figure 2 to Figure 11 and will not be described here again.

[0129] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A charging device, characterized by, The charging device comprises a cabinet, a switch group, a charging gun, a heat exchanger and two groups of fans, the cabinet is used for accommodating the switch group, one end of the charging gun, the heat exchanger and the two groups of fans, one end of the charging gun is connected to the switch group along the upper end of the height direction of the cabinet, the other end of the charging gun is located outside the cabinet, and the heat exchanger is used for heat exchange with the gas in the cabinet; The heat exchanger is located below the switch group along the height direction of the cabinet, and the heat exchanger, one group of fans and the other group of fans are arranged in sequence along the height direction of the cabinet; Each group of fans in the two groups of fans comprises one or more first fans, the air outlet of the first fan in the one group of fans faces the switch group, and the air outlet of the first fan in the other group of fans faces one end of the charging gun.

2. The charging device according to claim 1, characterized in that, The cabinet comprises two first side plates, the two first side plates are arranged opposite along the vertical direction of the height of the cabinet, and the switch group is arranged between the two first side plates; The two groups of fans are fixed to one of the first side plates, and the heat exchanger is arranged between the one of the first side plates and the switch group along the arrangement direction of the two first side plates.

3. The charging apparatus according to claim 1, characterized by, The cabinet comprises a top plate and two first side plates, the top plate is located above the charging gun along the height direction of the cabinet, the two first side plates are arranged opposite along the vertical direction of the height of the cabinet, and the switch group is arranged between the two first side plates; The one group of fans is fixed to one of the first side plates, and the other group of fans is fixed to the top plate; The heat exchanger comprises a gas passage, the air inlet of the gas passage and the air outlet of the gas passage are in communication with the environment in the cabinet; 4. The charging device according to claim 2 or 3, characterized in that, The air inlet of the gas passage faces the other first side plate along the arrangement direction of the two first side plates, and the air outlet of the gas passage and the air inlet of the first fan in the two groups of fans face the one first side plate along the arrangement direction of the two first side plates. The charging device further comprises a second fan, and the second fan is located between the heat exchanger and the other first side plate along the arrangement direction of the two first side plates; 5. The charging apparatus according to claim 4, characterized by, The air inlet of the second fan faces the other first side plate along the arrangement direction of the two first side plates, and the air outlet of the second fan faces the air inlet of the gas passage along the arrangement direction of the two first side plates. The charging device further comprises a second fan, and the second fan is fixed to the one first side plate; 6. The charging apparatus according to claim 4, characterized by, The air inlet of the second fan faces the air outlet of the gas passage along the arrangement direction of the two first side plates, and the air outlet of the second fan faces the one first side plate along the arrangement direction of the two first side plates. ​ 7. The charging apparatus according to any one of claims 2, 3, 5, 6, wherein, The charging device further comprises a baffle arranged between the group of fans and the switch group along the direction in which the two first side plates are arranged, the baffle comprising a through hole penetrating the baffle along the direction in which the two first side plates are arranged; The baffle is located above the heat exchanger along the height direction of the cabinet, and the surface of the baffle facing the heat exchanger and the surface of the heat exchanger facing the baffle are in contact along the height direction of the cabinet.

8. The charging apparatus according to claim 3, characterized by, The cabinet further comprises two second side plates arranged oppositely, the switch group being fixed to one of the second side plates, the two second side plates being arranged perpendicularly to the height direction of the cabinet and the direction in which the two first side plates are arranged; wherein, The one or more first fans of each group of fans comprise a plurality of first fans, the plurality of first fans of the group of fans being arranged on the one first side plate along the height direction of the cabinet, and the plurality of first fans of the other group of fans being arranged on the top plate along the direction in which the two first side plates are arranged.

9. The charging apparatus according to claim 3, wherein The cabinet further comprises two second side plates arranged oppositely, the two second side plates being arranged perpendicularly to the height direction of the cabinet and the direction in which the two first side plates are arranged; The switch group is divided into two sub-switch groups, the two sub-switch groups being respectively fixed to the two second side plates, the number of charging guns being a plurality, and different sub-switch groups being connected to different charging guns in the plurality of charging guns; wherein, The one or more first fans of each group of fans comprise a plurality of first fans, the plurality of first fans being divided into two sub-fan groups, the two sub-fan groups of the group of fans being arranged on the one first side plate along the direction in which the two second side plates are arranged, and the two sub-fan groups of the other group of fans being arranged on the top plate along the direction in which the two second side plates are arranged.

10. The charging apparatus according to any one of claims 1 to 3, 5, 6, 8, 9, wherein The charging device further comprises a power converter and two groups of metal connecting pieces, the two groups of metal connecting pieces being fixed to the inner surface of the cabinet, one end of the switch group along the upper end of the height direction of the cabinet being connected to the charging gun through one group of metal connecting pieces, and the lower end of the switch group along the height direction of the cabinet being connected to the power converter through the other group of metal connecting pieces; Along a direction perpendicular to the height direction of the cabinet, the projection of the group of fans respectively overlaps the projection of at least one of the two groups of metal connecting pieces and the projection of the switch group.

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