Charging device, charging system and vehicle

Abstract

The embodiment of the invention provides a charging device, a charging system and a vehicle. The charging device comprises a shell and a conductive structure, the conductive structure is used for realizing connection and disconnection of at least two electric connection points; the shell is provided with a heat dissipation structure, and the heat dissipation structure exchanges heat with the conductive structure. Through heat exchange between the heat dissipation structure and the conductive structure, the temperature of the conductive structure can be effectively reduced, so that reliable heat dissipation of the conductive structure is realized, the charging device can maintain relatively high charging power, and the charging efficiency of the vehicle is improved.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and particularly relates to a charging device, a charging system, and a vehicle. Background Art

[0002] The charging device is a core component of new energy vehicles. The reliable charging of the vehicle can be achieved by electrically connecting the charging gun of an external energy storage device to the charging device. Among them, the charging device usually includes a housing and a plurality of functional devices arranged inside the housing, and adjacent two functional devices are electrically connected through a conductive copper bar.

[0003] However, since the charging device generates serious heat during operation, it limits the charging power and affects the charging efficiency of the vehicle. Summary of the Invention

[0004] This application aims to provide a charging device, a charging system, and a vehicle to solve the problem that the existing charging device generates serious heat during operation, thereby limiting the charging power and affecting the charging efficiency of the vehicle.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a charging device, including: a housing and a conductive structure;

[0007] The conductive structure is used to at least achieve the on / off of two electrical connection points;

[0008] The housing is provided with a heat dissipation structure, and the heat dissipation structure exchanges heat with the conductive structure.

[0009] Optionally, the conductive structure is connected to the housing.

[0010] Optionally, the housing includes a bottom plate, and the conductive structure and the heat dissipation structure are arranged on opposite sides of the bottom plate.

[0011] Optionally, at least part of the conductive structure abuts against the bottom plate.

[0012] Optionally, the conductive structure includes: a contactor, and the contactor is connected to the bottom plate.

[0013] Optionally, the conductive structure further includes: a conductive connecting piece, the conductive connecting piece abuts against the bottom plate, and the conductive connecting piece is electrically connected to the contactor.

[0014] Optionally, the contactor is arranged on a side of the conductive connecting piece away from the bottom plate.

[0015] Optionally, the heat dissipation structure includes a heat dissipation chamber for accommodating a heat dissipation medium;

[0016] Optionally, a groove is provided on a side of the bottom plate facing away from the conductive structure, and the groove is used for the flow of the heat dissipation medium.

[0017] Optionally, the housing further includes a sealing plate, and the sealing plate covers an opening of the groove and encloses with the groove to form the heat dissipation chamber.

[0018] Optionally, the heat dissipation structure further includes a flow guiding member, and the flow guiding member is disposed in the groove to form a heat dissipation flow path in the heat dissipation chamber.

[0019] Optionally, the heat dissipation structure includes a liquid inlet channel and a liquid outlet channel, and both the liquid inlet channel and the liquid outlet channel are disposed on the bottom plate.

[0020] Optionally, the heat dissipation flow path includes an inlet end and an outlet end, the liquid inlet channel is connected to the inlet end, and the liquid outlet channel is connected to the outlet end.

[0021] Optionally, the charging device further includes a heat conducting structure, and the heat conducting structure is disposed between the conductive structure and the housing, and the heat conducting structure is used for conducting the heat generated by the conductive structure to the housing.

[0022] Optionally, at least a part of the heat conducting structure covers the heat dissipation structure.

[0023] Optionally, the heat conducting structure includes a heat conducting plate, and the heat conducting plate is thermally connected to at least a part of the conductive structure and the housing respectively.

[0024] Optionally, the heat conducting structure further includes a heat conducting layer, and the heat conducting layer is disposed between the heat conducting plate and the conductive structure;

[0025] and / or, the heat conducting layer is disposed between the heat conducting plate and the housing.

[0026] Optionally, the heat conducting layer is a silicone grease heat conducting layer.

[0027] Optionally, the conductive structure further includes: a connector, and the connector is connected to the housing and electrically connected to the conductive structure;

[0028] wherein at least a part of the connector corresponds to the position of the heat dissipation structure.

[0029] Optionally, the conductive structure further includes: a charging port base, and the charging port base is connected to the housing and electrically connected to the conductive structure;

[0030] wherein at least a part of the charging port base corresponds to the position of the heat dissipation structure.

[0031] Optionally, the charging device further includes: a temperature sensor configured to collect at least temperature information of the conductive structure.

[0032] Optionally, the charging device further includes: a controller electrically connected to the temperature sensor, the controller configured to at least obtain and change the current flowing through the conductive structure based on the temperature information.

[0033] In a second aspect, the present application also discloses a charging system including the above-mentioned charging device.

[0034] Optionally, the charging device includes a first charging device, and the first charging device includes a first charging port base and a second charging port base with different powers;

[0035] And / or, the charging device includes a second charging device, and the second charging device includes a third charging port base, and the power of the third charging port base is the same as that of one of the first charging port base and the second charging port base.

[0036] Optionally, the charging system further includes a high-voltage distribution box, and the high-voltage distribution box is electrically connected to the first charging port base, the second charging port base, and the third charging port base respectively to achieve charging.

[0037] Optionally, the first charging device further includes a first electrical switch disposed between the high-voltage distribution box and the first charging port base, and the first electrical switch is configured to conduct or disconnect the high-voltage distribution box and the first charging port base.

[0038] Optionally, the first charging device further includes a second electrical switch disposed between the high-voltage distribution box and the second charging port base, and the second electrical switch is configured to conduct or disconnect the high-voltage distribution box and the second charging port base.

[0039] Optionally, the second charging device further includes a fourth electrical switch disposed between the high-voltage distribution box and the third charging port base, and the fourth electrical switch is configured to conduct or disconnect the high-voltage distribution box and the third charging port base.

[0040] Optionally, the first charging device further includes: a third electrical switch disposed between the first charging port base and the second charging port base, and the third electrical switch is configured to conduct or disconnect the first charging port base and the second charging port base.

[0041] In a third aspect, the present application also discloses a charging system including at least one first charging device with a charging power of megawatt level.

[0042] Optionally, the first charging device is the above-mentioned charging device.

[0043] Optionally, the first charging device includes a first charging port base and a second charging port base with different powers, and the charging power of one of the first charging port base and the second charging port base is in the megawatt range.

[0044] Optionally, the charging system further includes a high-voltage power distribution box, and the high-voltage power distribution box is electrically connected to the first charging port base and the second charging port base respectively to achieve charging.

[0045] Optionally, the first charging device further includes a first electrical switch, and the first electrical switch is arranged between the high-voltage power distribution box and the first charging port base, and the first electrical switch is used to conduct or disconnect the high-voltage power distribution box and the first charging port base.

[0046] Optionally, the first charging device further includes a second electrical switch, and the second electrical switch is arranged between the high-voltage power distribution box and the second charging port base, and the second electrical switch is used to conduct or disconnect the high-voltage power distribution box and the second charging port base.

[0047] Optionally, the first charging device further includes: a third electrical switch, and the third electrical switch is arranged between the first charging port base and the second charging port base, and the third electrical switch is used to conduct or disconnect the first charging port base and the second charging port base.

[0048] Fourthly, the present application also discloses a vehicle, including the above-mentioned charging device or any one of the above-mentioned charging systems.

[0049] In the embodiments of the present application, due to the provision of the heat dissipation structure, through the heat exchange between the heat dissipation structure and the conductive structure, the temperature of the conductive structure can be effectively reduced, so as to achieve reliable heat dissipation of the conductive structure, and further the charging device can maintain a high charging power, improving the charging efficiency of the vehicle.

[0050] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0052] Figure 1 is a schematic structural diagram of a charging device provided by an embodiment of the present application;

[0053] Figure 2It is a schematic structural diagram of a heat dissipation structure of a charging device provided by an embodiment of the present application;

[0054] Figure 3 It is a schematic structural diagram of a first charging device of a charging system provided by an embodiment of the present application;

[0055] Figure 4 It is a schematic structural diagram of a second charging device of a charging system provided by an embodiment of the present application;

[0056] Figure 5 It is a schematic working principle diagram of a charging system provided by an embodiment of the present application.

[0057] Reference numerals: 1. housing, 11. heat dissipation structure, 111. heat dissipation chamber, 1111. heat dissipation flow channel, 112. guide member, 113. liquid inlet channel, 114. liquid outlet channel, 12. bottom plate, 121. groove, 13. sealing plate, 2. conductive structure, 21. conductive connection member, 211. first conductive connection member, 212. second conductive connection member, 22. contactor, 23. connector, 24. charging port base, 3. heat conducting plate, 4. controller,

[0058] 100. first charging device, 101. first charging port base, 102. second charging port base, 103. first electrical switch, 104. second electrical switch, 105. third electrical switch, 106. first power distribution connector, 107. shunt connector,

[0059] 200. second charging device, 201. third charging port base, 202. second power distribution connector, 203. fourth electrical switch,

[0060] 300. high-voltage power distribution box,

[0061] 400. first on-vehicle charger,

[0062] 500. second on-vehicle charger. Detailed implementation manners

[0063] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0064] The terms "first", "second", etc. in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plural" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0066] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0067] In the related art, a charging device includes a housing and a conductive structure disposed inside the housing. The conductive structure includes, but is not limited to, conductive copper bars, contactors, connectors, charging port bases, etc. Among them, the contactor and the connector, and the contactor and the charging port base are electrically connected through the conductive copper bar. However, due to the internal resistance of the conductive copper bar, there are contact resistances at the connection between the conductive copper bar and the connector terminal of the connector, and at the charging port terminal of the charging port base, resulting in serious heating during the operation of the charging device, especially in the area where the charging port base is connected to the charging gun; at the same time, the contactor also generates heat during operation, further limiting the charging power and affecting the charging efficiency of the vehicle.

[0068] The embodiments of this application provide a charging device, and the charging device of this application will be described in detail below with reference to the drawings.

[0069] Refer to Figure 1 which shows a schematic structural diagram of a charging device provided by an embodiment of this application. Refer to Figure 2, showing a schematic structural diagram of a heat dissipation structure of a charging device provided by an embodiment of the present application.

[0070] As Figure 1 shown, the present application provides a charging device, including: a housing 1 and a conductive structure 2; the conductive structure 2 is used to at least realize the on-off of two electrical connection points; the housing 1 is provided with a heat dissipation structure 11, and the heat dissipation structure 11 exchanges heat with the conductive structure 2. Among them, the conductive structure 2 includes but is not limited to components such as a conductive connector 21, a contactor 22, a connector 23, and a charging port base 24.

[0071] In the embodiment of the present application, due to the provision of the heat dissipation structure 11, through the heat exchange between the heat dissipation structure 11 and the conductive structure 2, the temperature of the conductive structure 2 can be effectively reduced, thereby realizing reliable heat dissipation of the conductive structure 2, and further enabling the charging device to maintain a high charging power and improving the charging efficiency of the vehicle.

[0072] It should be noted that the embodiment of the present application does not limit the type of the heat dissipation structure 11, and those skilled in the art can adjust it according to actual needs. In one embodiment, the heat dissipation structure 11 can be a medium heat dissipation structure 11, which refers to a structure that uses a heat dissipation medium (such as a gas, a liquid or a phase change material, etc.) to effectively absorb, transfer and dissipate heat, thereby realizing heat dissipation.

[0073] In some optional embodiments of the present application, the conductive structure 2 is connected to the housing 1, so as to realize reliable fixation of the conductive structure 2. Further, the housing 1 includes a bottom plate 12, and the conductive structure 2 and the heat dissipation structure 11 are arranged on opposite sides of the bottom plate 12. That is, the bottom plate 12 can isolate the heat dissipation structure 11 from the conductive structure 2. For the case of adopting the medium heat dissipation structure 11, it can effectively avoid the problem that the heat dissipation medium enters the conductive structure 2 and causes a short circuit, which is beneficial to improving the charging reliability of the charging device.

[0074] In some optional embodiments of the present application, at least part of the conductive structure 2 abuts against the bottom plate 12. In this way, the heat generated by the conductive structure 2 can be transferred to the bottom plate 12 in a timely and rapid manner, and then transferred from the bottom plate 12 to the heat dissipation structure 11 in a timely and rapid manner, thereby quickly reducing the temperature of the conductive structure 2 and improving the overall heat dissipation effect of the charging device.

[0075] In some optional embodiments of the present application, the conductive structure 2 includes: a contactor 22, the contactor 22 is connected to the bottom plate 12, the contactor 22 is mainly used to control the on and off of the current, and the contactor 22 generates heat during operation. Through the connection between the contactor 22 and the bottom plate 12, not only can the contactor 22 be fixed, but also the heat generated by the contactor 22 can be transferred to the bottom plate 12 in a timely and rapid manner to realize heat dissipation.

[0076] In some optional embodiments of the present application, the conductive structure 2 further includes: a conductive connector 21, the conductive connector 21 abuts against the bottom plate 12, and the conductive connector 21 is electrically connected to the contactor 22. Among them, the conductive copper bus mainly plays the role of conducting various components, including but not limited to the conductive copper bus. During the operation of the charging device, the conductive copper bus itself generates heat due to the existence of internal resistance, and the connection between the conductive copper bus and other components (including but not limited to the contactor 22, the connector 23 and the charging port base 24, etc.) generates heat due to the existence of contact resistance.

[0077] In the embodiment of the present application, by the conductive copper busbar abutting against the bottom plate 12, the heat generated by the conductive copper busbar itself and the heat generated at the connection between the conductive copper busbar and other components can be promptly and quickly transferred to the bottom plate 12 through the conductive copper busbar, thereby achieving reliable heat dissipation of the conductive structure 2 and further improving the overall heat dissipation effect of the charging device.

[0078] Furthermore, the contactor 22 is disposed on the side of the conductive connector 21 facing away from the base plate 12. This can appropriately increase the area of contact between the conductive connector 21 (i.e., the conductive copper busbar) and the base plate 12, thereby increasing the heat dissipation area of the conductive connector 21 and further improving the overall heat dissipation effect of the charging device.

[0079] In some optional embodiments of the present application, such as Figure 2 As shown, the heat dissipation structure 11 includes a heat dissipation chamber 111 for accommodating a heat dissipation medium. Thus, the temperature of the conductive structure 2 can be effectively reduced through heat exchange between the heat dissipation medium and the conductive structure 2, thereby improving the overall heat dissipation effect of the charging device.

[0080] In some optional embodiments of the present application, a groove 121 is provided on the side of the bottom plate 12 facing away from the conductive structure 2. The groove 121 is used to circulate a heat dissipation medium. Furthermore, the housing 1 includes a sealing plate 13 that covers the opening of the groove 121 and encloses the groove 121 to form a heat dissipation chamber 111.

[0081] In other words, the heat dissipation chamber 111 is directly enclosed by a portion of the bottom plate 12 and the sealing plate 13. This allows for more direct and efficient heat exchange between the heat dissipation medium and the conductive structure 2, more rapidly reducing the temperature of the conductive structure 2 and thereby further improving the overall heat dissipation effect of the charging device. Specifically, the housing 1 further includes side panels, and the bottom plate 12 and the side panels together form a receiving cavity. The groove 121 can be formed by at least a portion of the bottom plate 12 being recessed toward the receiving cavity, thereby fully utilizing the excess space within the receiving cavity, reducing the overall height of the charging device, and facilitating a miniaturized design of the charging device.

[0082] It should be noted that the embodiments of the present application do not limit the connection manner between the sealing plate 13 and the bottom plate 12, and those skilled in the art can adjust it according to actual needs. In one embodiment, the sealing plate 13 is bolted to the bottom plate 12 located at the opening edge of the groove 121. Further, in order to prevent the heat dissipation medium from leaking from the connection between the sealing plate 13 and the bottom plate 12, a sealing member can also be provided between the sealing plate 13 and the bottom plate 12.

[0083] In some optional embodiments of the present application, the heat dissipation structure 11 further includes a flow guiding member 112, and the flow guiding member 112 is disposed in the groove 121 to form a heat dissipation flow channel 1111 in the heat dissipation chamber 111. In this way, on the one hand, through the orderly flow of the heat dissipation medium in the heat dissipation flow channel 1111, the heat dissipation medium can evenly flow through the area corresponding to the conductive structure 2, improving the heat exchange efficiency between the heat dissipation structure 11 and the conductive structure 2, and thus further improving the overall heat dissipation effect of the charging device. On the other hand, the heat dissipation flow channel 1111 helps the heat dissipation medium to be more evenly distributed in the heat dissipation chamber 111, effectively avoiding the situation of insufficient local heat dissipation, and further improving the heat dissipation performance of the heat dissipation structure 11.

[0084] It should be noted that the embodiments of the present application do not limit the number of the flow guiding members 112, and those skilled in the art can adjust it according to actual needs. In a specific application, the flow guiding member 112 can be a flow guiding plate, and there are multiple flow guiding plates. If the extending direction of the housing 1 is the first direction, the groove 121 includes two groove walls oppositely arranged along the first direction, the size of the flow guiding plate in the first direction is smaller than the distance between the two groove walls in the first direction, and the multiple flow guiding plates are spaced apart in the direction perpendicular to the first direction, and one of the adjacent two flow guiding plates is connected to one of the groove walls, and the other is connected to the other groove wall, thereby forming a serpentine heat dissipation flow channel 1111. Here, the extending direction of the housing 1 can be the length direction of the housing xxxx, or the width direction of the housing 1.

[0085] In some optional embodiments of the present application, the heat dissipation structure 11 includes a liquid inlet channel 113 and a liquid outlet channel 114, and both the liquid inlet channel 113 and the liquid outlet channel 114 are disposed on the bottom plate 12. In this way, by disposing the heat dissipation chamber 111, the liquid inlet channel 113, and the liquid outlet channel 114 on the bottom plate 12, not only can the overall sealing performance of the heat dissipation structure 11 be improved, but also the structure can be simplified and the cost can be reduced.

[0086] Further, the heat dissipation flow channel 1111 includes an inlet end and an outlet end, the liquid inlet channel 113 is communicated with the inlet end, and the liquid outlet channel xxxx is communicated with the outlet end. It can be understood that the end of the liquid inlet channel 113 away from the inlet end and the end of the liquid outlet channel 114 away from the outlet end are used to communicate with an external heat dissipation device, so as to realize the circulating flow of the heat dissipation medium.

[0087] In the embodiment of the present application, due to the provision of the liquid inlet channel 113 and the liquid outlet channel 114, by connecting the two ends of the liquid inlet channel 113 to the inlet end of the heat dissipation channel 1111 and an external heat dissipation device respectively, and connecting the two ends of the liquid outlet channel 114 to the outlet end of the heat dissipation channel 1111 and an external heat dissipation device respectively, the circulating flow of the heat dissipation medium can be achieved, so that the conductive structure 2 can be continuously cooled, and further the overall heat dissipation effect of the charging device can be improved.

[0088] It should be noted that the specific structures of the liquid inlet channel 113 and the liquid outlet channel 114 in the embodiment of the present application are not limited, and those skilled in the art can adjust them according to actual needs. In one embodiment, the liquid inlet channel 113 and the liquid outlet channel 114 can be through holes formed in the bottom plate 12, one end of the through hole extends to the wall of the groove 121, and the other end of the through hole extends to the surface of the bottom plate 12. In this way, the structure of the charging device can be further simplified.

[0089] In some optional embodiments of the present application, the charging device further includes a heat conduction structure, which is arranged between the conductive structure 2 and the housing 1, and the heat conduction structure is used to conduct the heat generated by the conductive structure 2 to the housing 1. Specifically, the heat conduction structure is arranged between the conductive connecting member 21 and the bottom plate 12.

[0090] In the embodiment of the present application, by providing the heat conduction structure, the heat generated by the conductive structure 2 can be quickly and efficiently conducted to the housing 1, thereby improving the heat conduction efficiency, further reducing the temperature of the conductive structure 2, and further improving the overall heat dissipation effect of the charging device. It should be noted that the "heat conduction structure" in the embodiment of the present application refers to a structural member processed from a material with a high heat conductivity.

[0091] In some optional embodiments of the present application, at least part of the heat conduction structure covers the heat dissipation structure 11. That is, the coverage area of the heat conduction structure is greater than or equal to the coverage area of the heat dissipation structure 11. In this way, on the one hand, the heat conduction structure can cover more of the conductive structure 2 and conduct as much heat as possible to the heat dissipation structure 11 for dissipation; on the other hand, the heat exchange area between the heat conduction structure and the heat dissipation structure 11 is as large as possible, so that the heat dissipation function of the heat dissipation structure 11 can be fully exerted, and further the overall heat dissipation effect of the charging device can be improved.

[0092] In some alternative embodiments of the present application, the heat conduction structure includes a heat conduction plate 3, and the heat conduction plate 3 is thermally connected to at least part of the conductive structure 2 and the housing 1 respectively. Specifically, the heat conduction plate 3 includes a first side and a second side disposed away from each other; the first side abuts against at least part of the conductive connector 21; the second side abuts against at least part of the bottom plate 12. In this way, through the direct abutment of the heat conduction plate 3 with the conductive connector 21 and the bottom plate 12 respectively, heat can be quickly transferred from the conductive connector 21 to the bottom plate 12.

[0093] It should be noted that the present application embodiment does not limit the material of the heat conduction plate 3, and those skilled in the art can adjust it according to actual needs. In one embodiment, the heat conduction plate 3 can be a ceramic heat conduction plate. Since ceramics have good heat conduction performance and insulation performance, not only can high-efficiency heat conduction be achieved, thereby improving the heat dissipation effect of the charging device; but also can prevent the conduction of current to avoid causing a short circuit, thereby improving the charging reliability of the charging device. The material of the ceramic heat conduction plate 3 includes but is not limited to aluminum nitride (AlN) and aluminum oxide (Al2O3).

[0094] In some alternative embodiments of the present application, the heat conduction structure further includes a heat conduction layer, and the heat conduction layer is disposed between the heat conduction plate 3 and the conductive structure 2; and / or, the heat conduction layer is disposed between the heat conduction plate 3 and the housing 1. Specifically, the heat conduction layer is disposed between the first side of the heat conduction plate 3 and the conductive connector 21, and / or, the heat conduction layer is disposed between the second side of the heat conduction plate 3 and the bottom plate 12.

[0095] Taking the case where a heat conduction layer is disposed between the heat conduction plate 3 and the conductive connector 21 as an example, since the heat conduction plate 3 and the conductive connector 21 are usually hard structures and their fitting degree is poor, therefore, by disposing a heat conduction layer between the heat conduction plate 3 and the conductive connector 21, the gap between the two can be filled, enhancing the efficiency of heat conduction and further improving the heat dissipation effect of the charging device. It can be understood that the situation of disposing a heat conduction layer between the heat conduction plate 3 and the bottom plate 12 can refer to the situation of disposing a heat conduction layer between the heat conduction plate 3 and the conductive connector 21, and will not be elaborated here.

[0096] It should be noted that the heat-conducting layer refers to a layered structure with heat-conducting properties. In the embodiments of the present application, the material of the heat-conducting layer is not limited, and those skilled in the art can adjust it according to actual needs. In one of the embodiments, the heat-conducting layer can be a silicone grease heat-conducting layer. Since silicone grease has good heat conduction performance, insulation performance, and temperature resistance, etc., it can not only achieve efficient heat conduction, thereby improving the heat dissipation effect of the charging device; but also prevent the conduction of current to avoid short circuits, thereby improving the charging reliability of the charging device. In addition, good temperature resistance can enable the silicone grease heat-conducting layer to maintain stable performance within a wide temperature range, so that it can always reliably fill the gaps between the heat-conducting plate 3 and the conductive connector 21, and / or between the heat-conducting plate 3 and the housing 1, so that the heat-conducting plate 3 and the conductive connector 21, and the heat-conducting plate 3 and the housing 1 maintain a high heat conduction efficiency. In practical applications, taking the example of setting a heat-conducting layer between the heat-conducting plate 3 and the conductive connector 21, silicone grease is usually in a paste state. By applying silicone grease on the surface of the conductive connector 21 and / or the heat-conducting plate 3, a silicone grease heat-conducting layer can be formed between the conductive connector 21 and the heat-conducting plate 3. It can be understood that the situation of setting a heat-conducting layer between the heat-conducting plate 3 and the housing 1 can refer to the situation of setting a heat-conducting layer between the heat-conducting plate 3 and the conductive connector 21, which will not be elaborated here.

[0097] In some optional embodiments of the present application, the conductive structure 2 further includes: a connector 23, the connector 23 is connected to the housing 1 and electrically connected to the conductive structure 2; wherein, at least part of the connector 23 corresponds to the position of the heat dissipation structure 11. Among them, the connector 23 is used to be electrically connected to the high-voltage distribution box, so as to realize the transmission of electric energy. The conductive structure 2 further includes: a charging port base 24, the charging port base 24 is connected to the housing 1 and electrically connected to the conductive structure 2; wherein, at least part of the charging port base 24 corresponds to the position of the heat dissipation structure 11. Among them, the charging port base 24 is used to be electrically connected to the charging gun, so as to realize the transmission of electric energy.

[0098] In some optional embodiments of the present application, since at least part of the connector 23 and the charging port base 24 corresponds to the position of the heat dissipation structure 11, the connector 23 and the charging port base 24 can be cooled, which is beneficial to improving the overall heat dissipation effect of the charging device.

[0099] Specifically, the functional device includes a connector 23, a contactor 22, and a charging port base 24 that are electrically connected in sequence. The connector 23 is used to be electrically connected to the high-voltage power distribution box 300. The contactor 22 is used to control the conduction or disconnection between the connector 23 and the charging port base 24. The charging port base 24 is used to be electrically connected to an external charging gun. Specifically, the housing 1 further includes side plates. The bottom plate 12 and the side plates enclose to form a receiving cavity. The connector 23 and the charging port base 24 are disposed on opposite side plates of the housing 1 and at least partially extend into the receiving cavity. The contactor 22 is disposed in the receiving cavity and corresponds to the position of the heat dissipation structure 11. The conductive connecting member 21 includes a first conductive connecting member 211 and a second conductive connecting member 212. The first conductive connecting member 211 is disposed between the connector 23 and the contactor 22 to achieve the electrical connection between the connector 23 and the contactor 22. The second conductive connecting member 212 is disposed between the contactor 22 and the charging port base 24 to achieve the electrical connection between the connector 23 and the contactor 22. At least part of the first conductive connecting member 211 and the second conductive connecting member 212 abuts against the first side of the heat conducting plate 3.

[0100] It should be noted that taking the first conductive connecting member 211 as an example, in one embodiment, the first conductive connecting member 211 may be composed of a plurality of independent conductive copper bars connected to each other. By adaptively bending some of the conductive copper bars to connect with each functional device, and at least part of the conductive copper bars abuts against the first side of the heat conducting plate 3 to achieve reliable heat conduction. In another embodiment, the first conductive connecting member 211 may be a conductive copper bar. By adaptively bending it to connect with each functional device, and at least part of the conductive copper bar abuts against the first side of the heat conducting plate 3 to achieve reliable heat conduction.

[0101] In some optional embodiments of the present application, the charging device further includes: a temperature sensor, which is used to at least collect the temperature information of the conductive structure 2. The charging device further includes: a controller 4, which is electrically connected to the temperature sensor. The controller 4 is used to at least obtain and change the current flowing through the conductive structure 2 based on the temperature information. The controller 4 may be a controller integrated with functions such as a charging stop button, lighting, charging status indication color, forced unlocking, temperature detection, etc., so as to reduce the wiring harness of the controller 4 and avoid problems of wrong connection or interference.

[0102] Specifically, multiple temperature sensors can be provided. The multiple temperature sensors are respectively arranged at positions where heat generation occurs, such as the contactor 22, the connector terminal, the charging port terminal, the first conductive connection member 211, the second conductive connection member 212, etc., so as to monitor the heat generation conditions of various components of the charging device in real time. During the charging process, the controller 4 can obtain and compare the temperature information of each temperature sensor to obtain the maximum temperature. By comparing the maximum temperature with the preset temperature range, if the maximum temperature is lower than the lower limit value of the preset temperature range, the charging device is controlled to be in the large current charging state; if the maximum temperature is within the preset temperature range, the charging device is controlled to switch to the current limiting state to reduce the temperature of the charging device; if the maximum temperature is higher than the upper limit value of the preset temperature range, the charging device is controlled to switch to the off state. Among them, the large current charging state refers to the state of charging with a relatively large current, the current limiting state refers to the state of limiting the charging current (that is, reducing the current), and the off state refers to the state of stopping charging (that is, the current is 0). It should be noted that the preset temperature range is not limited in the embodiments of the present application, and those skilled in the art can adjust it according to actual needs.

[0103] In addition, for the charging device applied to a vehicle, the temperature sensor is also electrically connected to the vehicle controller. The vehicle controller can obtain and adjust the heat dissipation parameters of the heat dissipation device (such as the on-vehicle cooling water tank), such as flow rate, flow volume, and temperature, based on the temperature information, so as to adjust the heat dissipation performance of the heat dissipation structure 11 to adapt to different working states of the charging device.

[0104] In summary, the charging device provided by the embodiments of the present application has at least the following advantages:

[0105] In the embodiments of the present application, due to the provision of the heat dissipation structure, through the heat exchange between the heat dissipation structure and the conductive structure, the temperature of the conductive structure can be effectively reduced, thereby realizing reliable heat dissipation of the conductive structure, and further enabling the charging device to maintain a high charging power and improving the charging efficiency of the vehicle.

[0106] Refer to Figure 3 , which shows a schematic structural diagram of a first charging device of a charging system provided by the embodiments of the present application. Refer to Figure 4 , which shows a schematic structural diagram of a second charging device of a charging system provided by the embodiments of the present application. Refer to Figure 5 , which shows a working principle diagram of a charging system provided by the embodiments of the present application.

[0107] As Figures 3 to 4 shown, the embodiments of the present application also provide a charging system, including the above-mentioned charging device. By providing the heat dissipation structure 11, reliable heat dissipation of the charging device can be achieved, which is beneficial to improving the working reliability of the charging device and the charging system.

[0108] It should be noted that in the embodiments of the present application, the structure of the charging device is the same as that of the charging device in any of the above embodiments, and its beneficial effects are also similar, so they will not be elaborated here.

[0109] In some optional embodiments of the present application, the charging device includes a first charging device 100, and the first charging device 100 includes a first charging port base 101 and a second charging port base 102 with different powers; and / or, the charging device includes a second charging device 200, and the second charging device 200 includes a third charging port base 201, and the power of the third charging port base 201 is the same as that of one of the first charging port base 101 and the second charging port base 102.

[0110] Specifically, in one embodiment, the charging device includes a first charging device 100, and the first charging device 100 includes a first charging port base 101 and a second charging port base 102 with different powers, that is, the first charging device 100 is a dual-port charging device, so as to meet different charging needs.

[0111] In another embodiment, the charging device includes a second charging device 200, and the second charging device 200 includes a third charging port base 201, that is, the second charging device 200 is a single-port charging device, which can simplify the structure of the charging device while meeting the charging requirements.

[0112] In still another embodiment, the charging device includes a first charging device 100 and a second charging device 200. The first charging device 100 includes a first charging port base 101 and a second charging port base 102 with different powers, and the second charging device 200 includes a third charging port base 201, and the power of the third charging port base 201 is the same as that of one of the first charging port base 101 and the second charging port base 102, that is, the charging device is a charging device with both dual-port and single-port functions. In this way, during the charging process, charging can be carried out simultaneously through two charging port bases 24 with the same power (that is, the third charging port base 201 and the first charging port base 101, or the third charging port base 201 and the second charging port base 102), thereby greatly improving the charging efficiency.

[0113] It should be noted that the first charging port base 101 can be an MCS (Megawatt Charging System) charging port base, which is a DC fast charging system designed specifically for commercial heavy-duty electric vehicles. It takes into account commercial trucks and other high-power applications in its design and aims to address the limitations of CCS by breaking through the boundaries of charging capabilities and improving communication. The processing capacity of MCS is up to 3000A and it will become the main standard for long-haul trucks, airplanes and other commercial vehicles. Its higher power output makes it an ideal choice for applications where time-sensitive charging is crucial. In addition, according to a recent white paper released by CharIN, MCS also offers improved communication robustness, which will reduce downtime associated with charging failure events.

[0114] The second charging port base 102 can be a CCS (Combined Charging System) charging port base, which is a charging interface system that combines AC charging and DC charging functions. Currently, it is the expected transition from the CCS (Combined Charging System) to the MCS (Megawatt Charging System) charging standard. Compared with CCS, MCS has the advantages of shorter charging time, better efficiency and greater safety. Specifically, CCS usually may take several hours to charge a truck, while MCS can provide a power of up to about 3.5MW, thus greatly shortening the charging time of large battery packs and completing the charging task in a very short time. In addition, the technology behind MCS is not only related to speed. It is designed specifically to improve efficiency and ensure that the maximum amount of energy is transferred to the vehicle's battery with minimal losses. Moreover, as the power increases, enhanced safety measures are required. MCS is equipped with an advanced cooling system to handle rapid energy transfer and ensure the safety of the equipment and the vehicle.

[0115] The third charging port base 201 can be an MCS charging port base or a CCS charging port base. In one embodiment, both the third charging port base 201 and the second charging port base 102 are CCS charging port bases. A single CCS charging port base can achieve a rated charging current of approximately 500A. Thus, during the charging process, by electrically connecting two charging guns to the third charging port base 201 and the second charging port base 102 respectively, theoretically, a rated charging current of 1000A can be achieved, thereby greatly improving the charging efficiency of the charging system.

[0116] In some alternative embodiments of the present application, the charging system further includes a high-voltage distribution box 300, which is electrically connected to the first charging port base 101, the second charging port base 102 and the third charging port base 201 respectively to achieve charging.

[0117] Specifically, the first charging device 100 further includes a first electrical switch 103. The first electrical switch 103 is disposed between the high-voltage distribution box 300 and the first charging port base 101, and the first electrical switch 103 is used to conduct or disconnect the high-voltage distribution box 300 and the first charging port base 101. The first charging device 100 further includes a second electrical switch 104. The second electrical switch 104 is disposed between the high-voltage distribution box 300 and the second charging port base 102, and the second electrical switch 104 is used to conduct or disconnect the high-voltage distribution box 300 and the second charging port base 102. The second charging device 200 further includes a fourth electrical switch 203. The fourth electrical switch 203 is disposed between the high-voltage distribution box 300 and the third charging port base 201, and the fourth electrical switch 203 is used to conduct or disconnect the high-voltage distribution box 300 and the third charging port base 201.

[0118] Taking the first electrical switch 103 as an example, during the charging process, by opening or closing the first electrical switch, the circuit between the high-voltage distribution box 300 and the first charging port base 101 can be conducted or disconnected, so that the transmission or stop of electric energy can be realized as needed. The second electrical switch 104 and the fourth electrical switch 203 are the same, and will not be elaborated here. In one embodiment, the first electrical switch 103, the second electrical switch 104 and the fourth electrical switch 203 can be selected as contactors 22.

[0119] In some alternative embodiments of the present application, the first charging device 100 further includes: a third electrical switch 105. The third electrical switch 105 is disposed between the first charging port base 101 and the second charging port base 102, and the third electrical switch 105 is used to conduct or disconnect the first charging port base 101 and the second charging port base 102. Specifically, both ends of the third electrical switch 105 are respectively connected to the circuit between the first electrical switch 103 and the first charging port base 101, and the circuit between the second electrical switch 104 and the first power distribution connector 106. Among them, the third electrical switch 105 can be selected as a contactor 22.

[0120] Taking the first charging port base 101 as the MCS charging port base and the second charging port base 102 as the CCS charging port base as an example, since the current value transmitted by the MCS charging port base is much larger than that transmitted by the CCS charging port base, compared with the CCS charging port base, the high-voltage distribution box 300 needs to allocate more cables to the MCS charging port base. Based on this, by setting the third electrical switch 105, the MCS charging port base can reuse the cables of the CCS charging port base, so as to reduce the number of cables of the high-voltage distribution box 300 and achieve the purpose of cost reduction and weight reduction.

[0121] In practical applications, the first charging device 100 further includes a first power distribution connector 106 and a shunt connector 107. The first power distribution connector 106 is disposed between the high-voltage power distribution box 300 and electrical switches (including the first electrical switch 103 and the second electrical switch 104). When both the first electrical switch 103 and the second electrical switch 104 are turned on, the electric energy input into the first charging port base 101 and the second charging port base 102 can be transmitted to the high-voltage power distribution box 300 through the first power distribution connector 106 to achieve charging. The shunt connector 107 is electrically connected to the first power distribution connector 106 so that part of the current of the first power distribution connector 106 is distributed to the shunt connector 107. The first power distribution connector 106 and the high-voltage power distribution box 300 can be electrically connected by using a copper rod or a copper wire cable. It can be understood that, compared with a copper wire cable, the copper rod cable has a larger cross-sectional area and a larger rated over-current, and can reduce the required number of cables to a certain extent. In one embodiment, a copper rod cable with a cross-sectional area of 254mm 2 is used, and its rated over-current can reach 800A.

[0122] Furthermore, the second charging device 200 further includes a second power distribution connector 202. The second power distribution connector 202 is electrically connected to the shunt connector 107 and the fourth electrical switch 203 respectively, so that the third charging port base 201 can reuse the cable of the first charging port base 101, thereby reducing the number of cables of the high-voltage power distribution box 300 and achieving the purpose of cost reduction and weight reduction. When the fourth electrical switch 203 is turned on, the electric energy input into the third charging port base 201 can be transmitted to the high-voltage power distribution box 300 through the second power distribution connector 202, the shunt connector 107 and the first power distribution connector 106 in sequence to achieve charging. The second power distribution connector 202 and the shunt connector 107 can be electrically connected by using a copper rod or a copper wire cable. It can be understood that, compared with a copper wire cable, the copper rod cable has a larger cross-sectional area and a larger rated over-current, and can reduce the required number of cables to a certain extent. In one embodiment, a copper rod cable with a cross-sectional area of 254mm 2 is used, and its rated over-current can reach 800A.

[0123] In addition, when both the second charging port base 102 and the third charging port base 201 are CCS charging port bases, the charging system further includes two on-board chargers (OBC, On-Board Charger). The on-board charger is used to convert alternating current (AC) into direct current (DC) suitable for the vehicle battery pack. Among them, the on-board charger includes a first on-board charger 400 electrically connected to the second charging port base 102 and a second on-board charger 500 electrically connected to the third charging port base 201.

[0124] Taking the first charging port base 101 as the MCS charging port base and the second charging port base 102 and the third charging port base 201 as the CCS charging port bases as an example, the following describes several working modes of the charging system according to the embodiments of the present application in detail. Figure 5 Describe the several working modes of the charging system according to the embodiments of the present application in detail.

[0125] (1) Working mode of the first charging port base 101 (i.e., the MCS charging port base)

[0126] Close the first electrical switch 103 and the third electrical switch 105, so that the first charging port base 101 (i.e., the MCS charging port base) is electrically connected to the high-voltage distribution box 300 for DC charging. During this process, the first charging port base 101 (i.e., the MCS charging port base) can reuse part of the cable of the second charging port base 102 (i.e., the CCS charging port base).

[0127] (2) Working mode of the second charging port base 102 (i.e., the CCS charging port base)

[0128] Close the second electrical switch 104, so that the second charging port base 102 (i.e., the CCS charging port base) is electrically connected to the high-voltage distribution box 300 for DC charging. At the same time, the AC part of the second charging port base 102 (i.e., the CCS charging port base) is charged through the first on-vehicle charger 400 for AC charging.

[0129] (3) Working mode of the third charging port base 201 (i.e., the CCS charging port base)

[0130] Close the fourth electrical switch 203, so that the third charging port base 201 (i.e., the CCS charging port base) is electrically connected to the high-voltage distribution box 300 for DC charging. At the same time, the AC part of the third charging port base 201 (i.e., the CCS charging port base) is charged through the second on-vehicle charger 500 for AC charging.

[0131] (4) Simultaneous working mode of the second charging port base 102 and the third charging port base 201 (i.e., two CCS charging port bases)

[0132] Close the second electrical switch 104 and the fourth electrical switch 203, so that both the second charging port base 102 and the third charging port base 201 (i.e., two CCS charging port bases) are electrically connected to the high-voltage distribution box 300 for DC charging. At the same time, the AC part of the second charging port base 102 (i.e., the CCS charging port base) is charged through the first on-vehicle charger 400 for AC charging, and the AC part of the third charging port base 201 (i.e., the CCS charging port base) is charged through the second on-vehicle charger 500 for AC charging.

[0133] The embodiment of the present application further provides another charging system, including at least one first charging device 100 with a charging power of megawatt level, wherein the first charging device 100 is the above-mentioned charging device. Specifically, the first charging device 100 includes a first charging port base 101 and a second charging port base 102 with different powers, and the charging power of one of the first charging port base 101 and the second charging port base 102 is of megawatt level. In this way, high-power charging can be achieved, effectively shortening the charging time and greatly improving the charging efficiency.

[0134] It should be noted that the structure of the first charging device 100 is the same as that of the first charging device 100 in the above-mentioned charging system, and its beneficial effects are also similar, so details are not described here. It can be understood that megawatt-level charging requires handling extremely high currents and voltages, which poses extremely high requirements for the heat dissipation design of the charging device. Since the first charging device 100 in the embodiment of the present application is provided with a heat dissipation structure 11, reliable heat dissipation of the first charging device 100 can be achieved through the heat exchange between the heat dissipation structure 11 and the conductive structure 2, enabling the charging device to maintain a high charging power and being beneficial to improving the charging efficiency of the vehicle.

[0135] The embodiment of the present application further provides a vehicle, including the above-mentioned charging device or any of the above-mentioned charging systems.

[0136] It should be noted that in the embodiment of the present application, the structure of the charging device or charging system is the same as that of the charging device or charging system described in any of the above embodiments, and its beneficial effects are also similar, so details are not described here.

[0137] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0138] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A charging device, characterized in that: include: housing and conductive structure; The conductive structure is used to realize the connection and disconnection of at least two electrical connection points; The housing is provided with a heat dissipation structure, and the heat dissipation structure exchanges heat with the conductive structure.

2. The charging device according to claim 1, characterized in that The conductive structure is connected to the housing.

3. The charging device according to claim 2, characterized in that The housing includes a bottom plate, and the conductive structure and the heat dissipation structure are arranged on two opposite sides of the bottom plate.

4. The charging device according to claim 3, characterized in that At least a portion of the conductive structure abuts against the bottom plate.

5. The charging device according to claim 4, characterized in that The conductive structure includes a contactor connected to the bottom plate.

6. The charging device according to claim 5, characterized in that The conductive structure further includes a conductive connector, the conductive connector abuts against the bottom plate, and the conductive connector is electrically connected to the contactor.

7. The charging device according to claim 6, characterized in that The contactor is arranged on a side of the conductive connecting member facing away from the bottom plate.

8. The charging device according to claim 3, characterized in that The heat dissipation structure includes a heat dissipation cavity, and the heat dissipation cavity is used to accommodate a heat dissipation medium.

9. The charging device according to claim 8, characterized in that A groove is provided on a side of the bottom plate facing away from the conductive structure, and the groove is used for circulating the heat dissipation medium.

10. The charging device according to claim 9, characterized in that The housing further includes a sealing plate, which covers the opening of the groove and encloses the groove to form the heat dissipation chamber.

11. The charging device according to claim 9 or 10, characterized in that: The heat dissipation structure further includes a flow guide, which is arranged in the groove to form a heat dissipation channel in the heat dissipation cavity.

12. The charging device according to claim 8, characterized in that The heat dissipation structure further includes a liquid inlet channel and a liquid outlet channel, and both the liquid inlet channel and the liquid outlet channel are arranged on the bottom plate.

13. The charging device according to claim 12, characterized in that: The heat dissipation channel includes an inlet end and an outlet end; the liquid inlet channel is communicated with the inlet end, and the liquid outlet channel is communicated with the outlet end.

14. The charging device according to claim 2, characterized in that The charging device further includes a heat-conducting structure, which is disposed between the conductive structure and the housing and is configured to conduct heat generated by the conductive structure to the housing.

15. The charging device according to claim 14, characterized in that: At least a portion of the heat-conducting structure covers the heat-dissipating structure.

16. The charging device according to claim 14 or 15, characterized in that: The heat-conducting structure includes a heat-conducting plate, and the heat-conducting plate is heat-conductingly connected to the conductive structure and at least a portion of the housing.

17. The charging device according to claim 16, characterized in that The heat conducting plate is a ceramic heat conducting plate.

18. The charging device according to claim 16, characterized in that The heat-conducting structure further comprises a heat-conducting layer, and the heat-conducting layer is arranged between the heat-conducting plate and the conductive structure; And / or, the heat conducting layer is arranged between the heat conducting plate and the shell.

19. The charging device according to claim 18, characterized in that The heat-conducting layer is a silicone grease heat-conducting layer.

20. The charging device according to claim 2, characterized in that The conductive structure further includes: a connector connected to the housing and electrically connected to the conductive structure; Wherein, at least a portion of the connector corresponds to the position of the heat dissipation structure.

21. The charging device according to claim 2, characterized in that The conductive structure further includes: a charging port base, the charging port base being connected to the housing and electrically connected to the conductive structure; Wherein, at least a portion of the charging port base corresponds to the position of the heat dissipation structure.

22. The charging device according to claim 1, wherein: The charging device further includes a temperature sensor configured to collect at least temperature information of the conductive structure.

23. The charging device according to claim 22, characterized in that The charging device further includes a controller electrically connected to the temperature sensor, and configured to at least obtain and change a current flowing through the conductive structure based on the temperature information.

24. A charging system, characterized in that: The charging device comprises the charging device according to any one of claims 1 to 23.

25. The charging system according to claim 24, characterized in that The charging device includes a first charging device, the first charging device includes a first charging port base and a second charging port base with different power; And / or, the charging device includes a second charging device, the second charging device includes a third charging port base, and the power of the third charging port base is the same as that of one of the first charging port base and the second charging port base.

26. The charging system according to claim 25, characterized in that The charging system further includes a high-voltage distribution box, which is electrically connected to the first charging port base, the second charging port base, and the third charging port base, respectively, to achieve charging.

27. The charging system according to claim 26, characterized in that The first charging device also includes a first electrical switch, which is arranged between the high-voltage distribution box and the first charging port base. The first electrical switch is used to connect or disconnect the high-voltage distribution box and the first charging port base.

28. The charging system according to claim 26, wherein: The first charging device also includes a second electrical switch, which is arranged between the high-voltage distribution box and the second charging port base. The second electrical switch is used to connect or disconnect the high-voltage distribution box and the second charging port base.

29. The charging system according to claim 26, wherein: The second charging device also includes a fourth electrical switch, which is arranged between the high-voltage distribution box and the third charging port base. The fourth electrical switch is used to connect or disconnect the high-voltage distribution box and the third charging port base.

30. The charging system according to claim 25, wherein: The first charging device further includes: a third electrical switch, which is arranged between the first charging port base and the second charging port base, and the third electrical switch is used to connect or disconnect the first charging port base and the second charging port base.

31. A charging system, characterized in that: It includes at least one first charging device with a charging power of megawatt level.

32. The charging system according to claim 31, wherein: The first charging device is the charging device according to any one of claims 1-30.

33. The charging system according to claim 32, wherein: The first charging device includes a first charging port base and a second charging port base with different powers, and the charging power of one of the first charging port base and the second charging port base is in the megawatt level.

34. The charging system according to claim 33, wherein: The charging system further includes a high-voltage distribution box, which is electrically connected to the first charging port base and the second charging port base respectively to achieve charging.

35. The charging system according to claim 34, characterized in that The first charging device also includes a first electrical switch, which is arranged between the high-voltage distribution box and the first charging port base. The first electrical switch is used to connect or disconnect the high-voltage distribution box and the first charging port base.

36. The charging system according to claim 34, wherein: The first charging device also includes a second electrical switch, which is arranged between the high-voltage distribution box and the second charging port base. The second electrical switch is used to connect or disconnect the high-voltage distribution box and the second charging port base.

37. The charging system according to claim 34, wherein: The first charging device further includes: a third electrical switch, which is arranged between the first charging port base and the second charging port base, and the third electrical switch is used to connect or disconnect the first charging port base and the second charging port base.

38. A vehicle, characterized in that: The charging device comprises the charging device according to any one of claims 1 to 23, or the charging system according to any one of claims 24 to 30, or the charging system according to any one of claims 31 to 37.

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