Power distribution device, charging system, charging device, charging station, and charging method

Abstract

The application provides a power distribution device, a charging system, a charging device, a charging station and a charging method. The component input end of the first switch component in the power distribution device is connected with the first electric input end, the component output end of the first switch component is connected with the first electric output end; the component input end of the second switch component is connected with the second electric input end, the component output end of the second switch component is connected with the second electric output end; the first component end of the third switch component is connected with the component input end of the first switch component, and the second component end of the third switch component is connected with the component input end of the second switch component. The power distribution device can realize flexible distribution of charging current and reduce the input cost of power distribution.

Description

Technical Field

[0001] The present application relates to the field of charging and discharging technology, and in particular to a power distribution device, a charging system, a charging device, a charging station, and a charging method. Background Art

[0002] With the advancement of society and the growing awareness of environmental protection, electric vehicles are gaining popularity because they are powered by onboard power supplies and can solve the problems of exhaust emissions pollution and high energy consumption caused by fuel-powered vehicles. With the rapid development of the new energy electric vehicle industry, charging piles are increasingly needed in more and more places. However, due to site and power supply limitations, charging power needs to be allocated promptly and reasonably to maximize the efficiency of the site and power supply, which is the realization of power distribution technology.

[0003] Traditional power distribution technology, such as traditional group charging technology (such as patent CN105375552A, patent CN204928271U and patent CN106033904A), usually adopts a one-to-one charging method compared to single charging piles, that is, one charging pile corresponds to one parking space. Traditional power distribution technology is particularly suitable for charging stations that require high current and fast charging.

[0004] Unlike charging stations that require high current and fast charging, charging scenarios such as residential communities have the following significant characteristics: limited power load and long vehicle parking times allow for low-current, long-term charging. If traditional power distribution technology were directly applied to charging scenarios such as residential communities, all power modules would need to be deployed to charge a specific vehicle or a few, and simultaneous charging of multiple vehicles would be rare, resulting in low power distribution investment costs.

[0005] On the other hand, in charging scenarios such as residential communities, although the current total charging demand is relatively small, it will gradually increase in the future with the popularization of electric vehicles. Therefore, the flexible allocation of charging systems and the addition of power modules to cope with future higher current charging needs still need to be effectively guaranteed. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a power distribution device, a charging system, a charging device, a charging station and a charging method, so as to solve the above-mentioned problems existing in the prior art, reduce the investment cost of power distribution, and flexibly allocate charging power to each electric vehicle according to actual charging needs.

[0007] In a first aspect, a power distribution device is provided, which may include:

[0008] a first electrical input terminal, a second electrical input terminal, a first electrical output terminal, and a second electrical output terminal;

[0009] a first switch assembly, wherein an assembly input terminal of the first switch assembly is connected to the first electrical input terminal, and an assembly output terminal of the first switch assembly is connected to the first electrical output terminal, and is configured to distribute power of the charging current at the assembly input terminal of the first switch assembly and output the distributed charging current from the assembly output terminal of the first switch assembly;

[0010] a second switch assembly, wherein an assembly input terminal of the second switch assembly is connected to the second electrical input terminal, and an assembly output terminal of the second switch assembly is connected to the second electrical output terminal, and is configured to transmit the charging current in the assembly input terminal of the second switch assembly to the assembly output terminal of the second switch assembly;

[0011] a third switch assembly, wherein a first assembly terminal of the third switch assembly is connected to an assembly input terminal of the first switch assembly, and a second assembly terminal of the third switch assembly is connected to an assembly input terminal of the second switch assembly;

[0012] During the charging process, the third switch component is used to output the first charging current in the charging current inputted from the first electrical input terminal sequentially through the first component terminal of the third switch component, the second component terminal of the third switch component, the component input terminal of the second switch component, the component output terminal of the second switch component and the second electrical output terminal;

[0013] Alternatively, the first charging current among the charging currents inputted into the second electrical input terminal is outputted in sequence through the second component terminal of the third switch component, the first component terminal of the third switch component, the component input terminal of the first switch component, the component output terminal of the first switch component and the first electrical output terminal.

[0014] In one possible implementation, the third switch assembly includes a first switch unit;

[0015] When the number of first component terminals of the third switch component is M and the number of second component terminals is M, the M first component terminals are connected one-to-one with the M second component terminals to form M conductive circuits, each conductive circuit includes at least one first switch unit, and the first switch unit is used to connect and disconnect the conductive circuit;

[0016] If each of the conductive circuits includes multiple first switch units, then one end of the multiple first switch units in each conductive circuit after being connected in series is connected to the first component end corresponding to the conductive circuit, and the other end of the multiple first switch units after being connected in series is connected to the second component end corresponding to the conductive circuit; M is an integer not less than 1.

[0017] In a possible implementation, the number of component input ends of the first switch assembly and the number of first component ends of the third switch assembly are both plural, and the number of component input ends of the first switch assembly is less than the number of first component ends of the third switch assembly; and each component input end of the first switch assembly is connected to a plurality of first component ends.

[0018] In a possible implementation, the number of component input ends of the second switch assembly and the number of second component ends of the third switch assembly are both plural, and the number of component input ends of the second switch assembly is less than the number of second component ends of the third switch assembly; and each component input end of the second switch assembly is connected to a plurality of second component ends.

[0019] In a possible implementation, the number of component input ends of the first switch assembly and the number of first component ends of the third switch assembly are equal; and each first component end of the third switch assembly is connected to a component input end of the first switch assembly in one-to-one correspondence.

[0020] In a possible implementation, the number of component input ends of the second switch assembly and the number of second component ends of the third switch assembly are equal; and each second component end of the third switch assembly is connected to a component input end of the second switch assembly in one-to-one correspondence.

[0021] In a possible implementation, the third switch assembly includes a first switch unit; when the number of first component ends of the third switch assembly is M and the number of second component ends is N, one first component end in the M is connected to at least two second component ends to form at least two conduction lines; the N is an integer not less than 2, and each conduction line includes one first switch unit.

[0022] In a possible implementation, at least two first component ends in the M are connected to one second component end to form at least two conduction lines, and each conduction line includes one first switch unit.

[0023] In a possible implementation, the third switch assembly further includes a second switch unit.

[0024] For each second switch unit, one end of the second switch unit is connected to a first component end corresponding to one conduction line, and the other end of the second switch unit is connected to a first component end corresponding to another conduction line.

[0025] In a possible implementation, the number of first electric input ends and the number of component input ends of the first switch assembly are equal; and each first electric input end is connected to a component input end of the first switch assembly in one-to-one correspondence.

[0026] In a possible implementation, when the number of the second electrical input terminals is equal to the number of component input terminals of the second switch component, the second electrical input terminals are connected to the component input terminals of the second switch component in a one-to-one correspondence.

[0027] In one possible implementation, the first switch component is a first power distribution component; the second switch component is a second power distribution component;

[0028] The first power distribution component and the second power distribution component have the same component structure, or the first power distribution component and the second power distribution component have different component structures.

[0029] In a possible implementation, the first switch component is a power distribution component; the second switch component is a direct-connection switch component composed of a plurality of third switch units;

[0030] Each component input end of the second switch component is connected to one end of a third switch unit in a one-to-one correspondence, and each component output end of the second switch component is connected to the other end of the third switch unit.

[0031] In one possible implementation, the first switch component includes a plurality of component output terminals, and the second switch component includes a plurality of component output terminals.

[0032] In a second aspect, a charging system is provided, which may include: the power distribution device of the first aspect, at least one power supply module and a controller.

[0033] The output end of the at least one power supply module is connected to the electrical input end of the power distribution device; the controller is communicatively connected to the at least one power supply module and the power distribution device respectively;

[0034] The at least one power supply module is used to provide actual charging current for the electric vehicle to be charged;

[0035] The power distribution device is used to distribute the power of the charging current input from the electrical input end and output the actual charging current corresponding to the electric vehicle to be charged.

[0036] In one possible implementation, the electrical input end of the power distribution device includes a first electrical input end and a second electrical input end; the at least one power supply module includes a first number of power supply modules and a second number of power supply modules;

[0037] When the number of output ends of the first number of power modules is equal to the number of first electrical input ends of the power distribution device, the output ends of the first number of power modules are connected to the first electrical input ends of the power distribution device in a one-to-one correspondence;

[0038] When the number of output ends of the second number of power modules is equal to the number of second electrical input ends of the power distribution device, the output ends of the second number of power modules are connected to the second electrical input ends of the power distribution device in a one-to-one correspondence.

[0039] In one possible implementation, the at least one power module includes at least one of an energy storage module connected to an energy storage battery, an energy storage module connected to a photovoltaic cell, a universal rechargeable battery, and an energy storage module in a vehicle-to-electricity interconnection mode.

[0040] In a third aspect, a charging device is provided, which may include: the charging system of the second aspect and at least one charging plug;

[0041] The charging system is used to output actual charging current to the electric vehicle to be charged.

[0042] The charging plug is used to receive the actual charging current of the electric vehicle to be charged and charge the electric vehicle to be charged based on the actual charging current.

[0043] In a fourth aspect, a charging station is provided, which may include the charging device according to the third aspect.

[0044] In a fifth aspect, a charging method is provided, which may include:

[0045] Obtaining a charging request, where the charging request includes a required charging current of the corresponding electric vehicle received by each charging terminal;

[0046] Based on the required charging current of each charging terminal, the number of idle power modules is allocated to obtain a power allocation strategy corresponding to each charging terminal;

[0047] Power distribution is performed on the charging current output by the corresponding power module in the power distribution strategy corresponding to each charging terminal to obtain the actual charging current corresponding to each charging terminal, so that the electric vehicle to be charged can charge the corresponding electric vehicle based on the actual charging current.

[0048] In one possible implementation, allocating the number of idle power modules based on the required charging current of each charging terminal and obtaining a power allocation strategy corresponding to each charging terminal includes:

[0049] According to the time sequence of the charging requests and the corresponding required charging currents of the charging terminals, the number of power modules in the idle state is allocated to obtain the number of power modules corresponding to the charging terminals, so as to obtain the power allocation strategy corresponding to the charging terminals.

[0050] In a possible implementation, based on the required charging currents of the charging terminals, the power modules in the idle state are allocated in quantity, and before the power distribution strategy corresponding to the charging terminals is obtained, the method further comprises:

[0051] If it is detected that the current required charging current corresponding to any charging terminal is less than a preset charging current, a preset number of power modules in the power distribution strategy corresponding to the charging terminal are released; the preset charging current is the maximum output current of one power module;

[0052] The working states of the preset number of power modules are updated to the idle state.

[0053] In a sixth aspect, an electronic device is provided, which comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;

[0054] The memory is configured to store a computer program;

[0055] The processor is configured to execute the program stored on the memory, and implement the method steps of any one of the fifth aspect.

[0056] In a seventh aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the method steps of any one of the fifth aspect.

[0057] The power distribution device provided in the application comprises a first electric input end, a second electric input end, a first electric output end, a second electric output end, a first switch assembly, a second switch assembly and a third switch assembly; the assembly input end of the first switch assembly is connected with the first electric input end, and the assembly output end of the first switch assembly is connected with the first electric output end; the assembly input end of the second switch assembly is connected with the second electric input end, and the assembly output end of the second switch assembly is connected with the second electric output end; the first assembly end of the third switch assembly is connected with the assembly input end of the first switch assembly, and the second assembly end of the third switch assembly is connected with the assembly input end of the second switch assembly; during the charging process, the third switch assembly sequentially outputs the first charging current in the charging current input by the first electric input end through the first assembly end of the third switch assembly, the second assembly end of the third switch assembly, the assembly input end of the second switch assembly, the assembly output end of the second switch assembly and the second electric output end; or, the third switch assembly sequentially outputs the first charging current in the charging current input by the second electric input end through the second assembly end of the third switch assembly, the first assembly end of the third switch assembly, the assembly input end of the first switch assembly, the assembly output end of the first switch assembly and the first electric output end.

[0058] The third switch assembly in the power distribution device can distribute the charging current input by the first electric input end and / or the second electric input end to the first switch assembly and the second switch assembly according to the service demand, and the distributed current is transmitted to the corresponding electric vehicle charging terminal connected with the first switch assembly and the second switch assembly after being distributed twice by the first switch assembly and the second switch assembly, so as to realize group charging or round charging for the corresponding electric vehicle charging terminal, and improve the charging efficiency. Compared with the prior art, the power distribution problem caused by calling all power modules to charge a vehicle or several vehicles is avoided, and in the case that the total charging demand increases, the charging system is flexibly deployed by distributing the input charging current, and the input cost of power distribution is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0060] Figure 1 A charging network schematic diagram to which the power distribution device provided by the embodiments of the present application belongs;

[0061] Figure 2 A structure schematic diagram of a charging system provided by the embodiments of the present application;

[0062] Figure 3 A flowchart of a charging method provided by the embodiments of the present application;

[0063] Figure 4 A structure schematic diagram of a power distribution device provided by the embodiments of the present application;

[0064] Figure 5A An internal structure schematic diagram of a third switch assembly provided by the embodiments of the present application;

[0065] Figure 5B An internal structure schematic diagram of another third switch assembly provided by the embodiments of the present application;

[0066] Figure 5C An internal structure schematic diagram of still another third switch assembly provided by the embodiments of the present application;

[0067] Figure 5D A circuit structure schematic diagram of a power distribution device provided by the embodiments of the present application;

[0068] Figure 5EA schematic diagram of the circuit structure of another power distribution device provided in an embodiment of the present application;

[0069] Figure 5F A schematic diagram of the circuit structure of another power distribution device provided in an embodiment of the present application;

[0070] Figure 5G A schematic diagram of the internal structure of a third switch assembly provided in an embodiment of the present application;

[0071] Figure 5H A schematic diagram of the internal structure of a third switch assembly provided in an embodiment of the present application;

[0072] Figure 6A A schematic diagram of the internal structure of a power distribution component provided in an embodiment of the present application;

[0073] Figure 6B A schematic diagram of the internal structure of another power distribution component provided in an embodiment of the present application;

[0074] Figure 6C A schematic diagram of the internal structure of another power distribution component provided in an embodiment of the present application;

[0075] Figure 6D A schematic diagram of the internal structure of another power distribution component provided in an embodiment of the present application;

[0076] Figure 6E A schematic diagram of the internal structure of a second switch assembly provided in an embodiment of the present application;

[0077] Figure 6F A schematic diagram of the internal structure of another second switch assembly provided in an embodiment of the present application;

[0078] Figure 6G A schematic diagram of the circuit structure of another power distribution device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0080] The power distribution device provided in the embodiment of the present application can be used in Figure 1 In the charging network topology shown, the charging network may include an operation platform layer, a charging system layer, and a charging terminal layer connected to the electric vehicles to be charged.

[0081] The operation platform layer is used to serve the internal information management of the charging company;

[0082] The charging system layer includes at least one charging system, which is used to dynamically adjust the output charging current according to the demand current of the electric vehicle and output the charging current to the charging terminal layer.

[0083] It can be understood that, when the voltage remains unchanged, the charging power of the corresponding charging terminal in the charging terminal layer can be represented by the charging current.

[0084] The charging terminal layer includes at least one charging terminal connected to each charging system, and is used to charge the electric vehicle to be charged based on the received charging current.

[0085] Among them, each charging terminal includes at least one charging plug (or "charging gun"), each charging plug is set in a parking space or a charging space, and is connected to an electric vehicle to be charged. The charging plug is used to receive the actual charging current of the electric vehicle to be charged and charge the electric vehicle to be charged based on the actual charging current.

[0086] It should be noted that each charging system and at least one connected charging terminal can be configured in a single device to form a charging device, enabling group or rotational charging of charging terminals. Multiple charging devices can form a charging station, which can be used in residential and commercial areas to provide power to electric vehicles and provide travel convenience for users.

[0087] Further, such as Figure 2 As shown, the charging system may include a power distribution device, at least one power module, and a controller. The output end of the at least one power module is connected to the electrical input end of the power distribution device; and the controller is communicatively connected to the at least one power module and the power distribution device.

[0088] The electrical input end of the power distribution device may include a first electrical input end and a second electrical input end, and the at least one power supply module may include a first number of power supply modules and a second number of power supply modules. When the number of output ends of the first number of power supply modules is equal to the number of the first electrical input ends of the power distribution device, the output ends of the first number of power supply modules are connected to the first electrical input ends of the power distribution device in a one-to-one correspondence; when the number of output ends of the second number of power supply modules is equal to the number of the second electrical input ends of the power distribution device, the output ends of the second number of power supply modules are connected to the second electrical input ends of the power distribution device in a one-to-one correspondence.

[0089] A power module is configured to provide an actual charging current to the electric vehicle to be charged based on a first control signal from the controller. The at least one power module may include at least one of an energy storage module connected to an energy storage battery, an energy storage module connected to a photovoltaic cell, a general-purpose rechargeable battery, and an energy storage module in a vehicle-to-electricity interconnection mode.

[0090] A controller is configured to determine a power distribution strategy and a corresponding charging path strategy based on the required charging current of the electric vehicle to be charged and the idle power module, and to generate a first control signal corresponding to the power distribution strategy and a second control signal corresponding to the charging path strategy; the first control signal and the second control signal are respectively sent to the power module and the power distribution device corresponding to the power distribution strategy; the power distribution strategy is used to provide the actual charging current for the electric vehicle to be charged; and the charging path strategy is used to output the actual charging current to the electric vehicle to be charged. The controller may be a system control unit (CCU), a microcontroller unit (MCU), or a pre-configured controller.

[0091] The power distribution device is used to distribute the power of the charging current inputted from the electric input terminal based on the second control signal of the controller, and output the actual charging current corresponding to the electric vehicle to be charged.

[0092] Figure 3 This is a flow chart of a charging method provided in an embodiment of the present application. Figure 3 As shown, the method is applied in a charging system, and the method may include:

[0093] Step 310: Get a charging request.

[0094] The controller in the charging system obtains a charging request and a request time of the charging request. The charging request may include a required charging current of the corresponding electric vehicle received by each charging terminal.

[0095] Step 320: Based on the required charging current of each charging terminal, allocate the number of power modules in the idle state to obtain the power allocation strategy corresponding to each charging terminal.

[0096] According to the principle that the earlier the charging request time is, the higher the charging priority is, it is determined whether the charging terminal is in the charging state or the waiting state.

[0097] For example, if according to the charging priority order, after a charging terminal is plugged into the charging plug, the charging system has no idle power modules to allocate, then the charging terminal will be in a waiting state; when the working state of any power module is idle, the power module will be called to charge the charging terminal.

[0098] In a specific implementation, before executing this step, if the controller in the charging system detects that the current required charging current corresponding to any charging terminal is less than the preset charging current, it releases a preset number of power modules in the power allocation strategy corresponding to the charging terminal; the preset charging current is the maximum output current of a power module; and the working status of the preset number of power modules is updated to an idle state.

[0099] According to the time sequence of charging requests and the corresponding required charging current of each charging terminal, the number of idle power modules is allocated to obtain the number of power modules corresponding to each charging terminal, so as to obtain the power allocation strategy corresponding to each charging terminal.

[0100] In some embodiments, the required charging current of a charging terminal decreases. For example, if the current required charging current is less than the preset charging current, it indicates that the electric vehicle connected to the charging terminal is almost fully charged. At this time, the power module with the smallest required charging current can be released to allocate the released power module to another charging terminal with a larger required charging current to improve the charging efficiency of the other charging terminal.

[0101] Step 330: Perform power distribution on the charging current output by the corresponding power module in the power distribution strategy corresponding to each charging terminal to obtain the actual charging current corresponding to each charging terminal.

[0102] The power distribution device in the charging system distributes power to the charging current output by the corresponding power module in the power distribution strategy corresponding to each charging terminal, and obtains the actual charging current corresponding to each charging terminal, so that the electric vehicle to be charged can charge the corresponding electric vehicle based on the actual charging current.

[0103] It can be seen that this method obtains the corresponding power distribution strategy based on the required charging current of each charging terminal, and adopts the power distribution strategy to output the charging current (or "charging power") to the corresponding charging terminal to realize group charging or rotation charging of each charging terminal, reducing the investment cost of power distribution and flexibly allocating charging power according to actual charging needs.

[0104] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application. In addition, the embodiments and features in the embodiments of the present application can be combined with each other if there is no conflict.

[0105] Figure 4 This is a schematic diagram of the structure of a power distribution device provided in an embodiment of the present application. Figure 4As shown, the power distribution device 400 may include: a first electrical input terminal 410 , a second electrical input terminal 420 , a first electrical output terminal 430 , a second electrical output terminal 440 , a first switch component 450 , a second switch component 460 and a third switch component 470 .

[0106] The component input terminal 451 of the first switch component 450 is connected to the first electrical input terminal 410 , and the component output terminal 452 of the first switch component 450 is connected to the first electrical output terminal 430 .

[0107] The component input terminal 461 of the second switch component 460 is connected to the second electrical input terminal 420 , and the component output terminal 462 of the second switch component 460 is connected to the second electrical output terminal 440 .

[0108] The first electrical input terminal 410 and the second electrical input terminal 420 are respectively connected to the output terminal of the power module. The first component terminal 471 of the third switch component 470 is connected to the component input terminal of the first switch component 450, and the second component terminal 472 of the third switch component 470 is connected to the component input terminal of the second switch component 460.

[0109] Specifically, when the power distribution device is in charging operation, the first switch component 450 is used to distribute power to the charging current in the component input end of the first switch component, and then output the charging current after power distribution from the component output end of the first switch component.

[0110] The second switch component is used to transmit the charging current in the component input end of the second switch component to the component output end of the second switch component.

[0111] The third switch component is used to output the first charging current in the charging current input from the first electrical input terminal, that is, a part of the charging current, in sequence through the first component terminal of the third switch component, the second component terminal of the third switch component, the component input terminal of the second switch component, the component output terminal of the second switch component and the second electrical output terminal; or, output the first charging current in the charging current input from the second electrical input terminal in sequence through the second component terminal of the third switch component, the first component terminal of the third switch component, the component input terminal of the first switch component, the component output terminal of the first switch component and the first electrical output terminal.

[0112] The second charging current in the charging current inputted from the first electrical input terminal, i.e., another part of the charging current, is outputted in sequence through the component input terminal of the first switch component, the component output terminal of the first switch component, and the first electrical output terminal; or, the second charging current in the charging current inputted from the second electrical input terminal is outputted in sequence through the component input terminal of the second switch component, the component output terminal of the second switch component, and the second electrical output terminal.

[0113] It can be seen that the third switch component in the power distribution device provided in the embodiment of the present application can distribute the charging current input into the first electrical input terminal and / or the second electrical input terminal to the first switch component and the second switch component according to business needs. After the distributed current is secondary distributed by the first switch component and the second switch component, the secondary distributed charging current is transmitted to the corresponding charging terminals connected to the first switch component and the second switch component, thereby realizing group charging or rotation charging of the electric vehicles corresponding to the corresponding charging terminals, thereby improving the charging efficiency.

[0114] It should be noted that the charging process and the discharging process of the power distribution device are inverse processes, that is, the order of the components in the power distribution device is different, and this application will not be described in detail here. The following uses the charging process of the power distribution device as an example to explain in detail the structure of each switch component in the power distribution device.

[0115] 1. A direct-connection conductive path is formed inside the third switch component:

[0116] The third switch assembly may include a first switch unit, a first assembly terminal, and a second assembly terminal. The number of the first assembly terminals may be M, and the number of the second assembly terminals may be N. Both M and N are integers not less than 1.

[0117] In some embodiments, when M is equal to N, that is, the number of first component ends of the third switch component is M and the number of second component ends is also M, the M first component ends and the M second component ends can be connected one-to-one to form M conductive circuits, each conductive circuit includes at least one first switch unit, and the first switch unit is used to turn on and off the conductive circuit.

[0118] If each conductive line includes a first switch unit, one end of the first switch unit in each conductive line is connected to the first component end corresponding to the conductive line, and the other end of the first switch unit is connected to the second component end corresponding to the conductive line.

[0119] If each conductive circuit includes multiple first switch units, one end of the multiple first switch units in each conductive circuit connected in series is connected to the first component end corresponding to the conductive circuit, and the other end of the multiple first switch units in series is connected to the second component end corresponding to the conductive circuit.

[0120] like Figure 5A As shown, when M=N=3, and the three conductive paths formed each include two first switch units, one end of the first switch unit A in the conductive path X is connected to the first component end connection x1 corresponding to the conductive path X, and one end of the first switch unit B is connected to the first component end connection x2 corresponding to the conductive path X; the other end of the first switch unit A is connected to the other end of the first switch unit B, that is, the first switch unit A and the first switch unit B are connected in series.

[0121] like Figure 5B As shown, when M=N=3, and each of the three conductive paths formed includes a first switch unit, one end of the first switch unit A in the conductive path X is connected to the first component end connection x1 corresponding to the conductive path X, and the other end of the first switch unit A is connected to the first component end connection x2 corresponding to the conductive path X.

[0122] It should be noted that when each conductive circuit includes multiple first switch units, the number of first switch units included in different conductive circuits of the above M conductive circuits can be the same or different, and this application does not limit this.

[0123] It can be seen that in the third switch assembly of the above embodiment, a direct-connection conductive line can be formed through the first switch unit to achieve flexible distribution of the charging current input to the first electrical input terminal and / or the second electrical input terminal.

[0124] In some embodiments, when M and N are both integers greater than 1, the third switch assembly may include m subassemblies. The external structure of each subassembly is the same, such as including p first subassembly terminals and q second subassembly terminals. The internal structure of each subassembly may be the same or different; for example, the internal structure of a subassembly may be as follows: Figure 5A As shown, the internal structure of another subcomponent can be as follows Figure 5B shown.

[0125] Taking the example of the third switch component including m*p first sub-component terminals and m*q second sub-component terminals, for each sub-component, the p first sub-component terminals of the sub-component are connected one-to-one with the p unconnected first component terminals in the third switch component; the q second sub-component terminals of the sub-component are connected one-to-one with the q unconnected second component terminals in the third switch component.

[0126] like Figure 5C As shown, the third switch assembly includes three subassemblies, each of which includes three first subassembly terminals, three second subassembly terminals and three first switch units;

[0127] The three first subassembly ends in the first subassembly and the three first assembly ends in the third switch assembly are respectively connected one-to-one through a first switch unit; the three second subassembly ends in the first subassembly and the three second assembly ends in the third switch assembly are respectively connected one-to-one through a first switch unit.

[0128] The three first subassembly ends in the second subassembly and the three first assembly ends in the third switch assembly other than those connected to the first subassembly are respectively connected one-to-one through a first switch unit; the three second subassembly ends in the first subassembly and the three second assembly ends in the third switch assembly other than those connected to the first subassembly are respectively connected one-to-one through a first switch unit.

[0129] The three first subassembly ends in the third subassembly and the three first assembly ends in the third switch assembly except those connected to the first subassembly and the second subassembly are respectively connected one-to-one through a first switch unit; the three second subassembly ends in the first subassembly and the three second assembly ends in the third switch assembly except those connected to the first subassembly and the second subassembly are respectively connected one-to-one through a first switch unit.

[0130] It is understandable that the external structure of each sub-component may be different according to business design requirements, and the embodiments of the present application do not limit this; the internal structure of each sub-component may be the same as the internal structure of the third switch component.

[0131] It can be seen from the above embodiments that the multiple first component terminals and the multiple second component terminals in the third switch component can form multiple direct-connection conductive paths through multiple first switch units, thereby realizing flexible distribution of the charging current input from the first electrical input terminal and / or the second electrical input terminal based on the same (or different) component input terminals of the first switch component or the second switch component through at least one conductive path.

[0132] Furthermore, the connection mode of the third switch component in the internal direct connection form with the first switch component and the second switch component in the power distribution device may include:

[0133] When the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are both 1, and the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are both 1, one component input terminal of the first switch component is connected to one first component terminal of the third switch component, and one component input terminal of the second switch component is connected to one second component terminal of the third switch component.

[0134] In some embodiments, when the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are both multiple, the number of component input terminals of the second switch component and the number of second component terminals of the third switch component can both be at least one, that is, the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are not limited.

[0135] (1) If the number of component input terminals of the first switch component is equal to the number of first component terminals of the third switch component, the first component terminals of the third switch component are connected to the component input terminals of the first switch component in a one-to-one correspondence.

[0136] In the case where the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are both multiple, the number of component input terminals of the first switch component and the number of first component terminals of the third switch component can both be at least one, that is, the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are not limited.

[0137] (2) If the number of component input terminals of the second switch component is equal to the number of second component terminals of the third switch component, the second component terminals of the third switch component are connected to the component input terminals of the second switch component in a one-to-one correspondence.

[0138] In one example, combining Figure 5B , a circuit structure of the power distribution device can be as follows Figure 5D As shown, the number of component output terminals of the first switch component and the number of component output terminals of the second switch component are both 3, the number of component input terminals of the first switch component and the number of component input terminals of the second switch component are both 3, and the number of first switch components and the number of second component terminals of the third switch component are both 3. At this time, the three first component terminals are connected one-to-one with the three component input terminals of the first switch component; the three second component terminals are connected one-to-one with the three component input terminals of the second switch component.

[0139] In some embodiments, when the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are both multiple, the number of component input terminals of the second switch component and the number of second component terminals of the third switch component can both be at least one, that is, the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are not limited.

[0140] (1) If the number of component input terminals of the first switch component is less than the number of first component terminals of the third switch component, at least one component input terminal of the first switch component can be connected to multiple first component terminals to distribute the charging current input to the component input terminal of each first switch component.

[0141] In the case where the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are both multiple, the number of component input terminals of the first switch component and the number of first component terminals of the third switch component can both be at least one, that is, the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are not limited.

[0142] (2) If the number of component input terminals of the second switch assembly is less than the number of second component terminals of the third switch assembly, at least one component input terminal of the second switch assembly can be connected with a plurality of second component terminals to realize the distribution of the charging current input by each component input terminal of the first switch assembly.

[0143] In one example, in combination with Figure 5C , a circuit structure of the power distribution device can be as shown in Figure 5E , when the number of component input terminals of the first switch assembly and the number of component input terminals of the second switch assembly are both 3, and the number of first switch assemblies and the number of second component terminals of the third switch assembly are both 9 (i.e. the number of first component terminals and the number of second component terminals of each sub-assembly in the 3 sub-assemblies are both 3), each of the 3 first component terminals of each sub-assembly in the third switch assembly is connected with the 3 component input terminals of the first switch assembly one by one, each of the 3 second component terminals of each sub-assembly is connected with 1 different component input terminal of the second switch assembly, and the component input terminals of the second switch assembly connected with the 3 second component terminals of each sub-assembly are different. For example, the first component terminals x1, y1, z1 in the first sub-assembly are connected with the component input terminal 1, the component input terminal 2 and the component input terminal 3 of the first switch assembly one by one, and the second component terminals x2, y2, z2 in the first sub-assembly are connected with the component input terminal 1 of the second switch assembly.

[0144] The first component terminals x1, y1, z1 in the second sub-assembly are connected with the component input terminal 1, the component input terminal 2 and the component input terminal 3 of the first switch assembly one by one, and the second component terminals x2, y2, z2 in the second sub-assembly are connected with the component input terminal 2 of the second switch assembly.

[0145] The first component terminals x1, y1, z1 in the third sub-assembly are connected with the component input terminal 1, the component input terminal 2 and the component input terminal 3 of the first switch assembly one by one, and the second component terminals x2, y2, z2 in the third sub-assembly are connected with the component input terminal 3 of the second switch assembly.

[0146] In one example, in combination with Figure 5C , a circuit structure of the power distribution device can be as shown in Figure 5FAs shown, the number of component input terminals of the first switch assembly and the number of component input terminals of the second switch assembly are both 3. When the number of first component terminals and the number of second component terminals of the third switch assembly are both 6, each component input terminal of the first switch assembly is connected to two first component terminals of the third switch assembly, and each component input terminal of the first switch assembly is connected to two different first component terminals. For example, component input terminal 1 of the first switch assembly is connected to first component terminal b1 and first component terminal c1 of the third switch assembly; component input terminal 2 of the first switch assembly is connected to first component terminal d1 and first component terminal e1 of the third switch assembly; and component input terminal 3 of the first switch assembly is connected to first component terminal a1 and first component terminal f1 of the third switch assembly.

[0147] Each component input terminal of the second switch assembly is connected to two second component terminals of the third switch assembly, and each component input terminal of the second switch assembly is connected to two different second component terminals. For example, component input terminal 1 of the second switch assembly is connected to second component terminal a2 and second component terminal b2 of the third switch assembly; component input terminal 2 of the second switch assembly is connected to second component terminal c2 and second component terminal d2 of the third switch assembly; and component input terminal 3 of the second switch assembly is connected to second component terminal e2 and second component terminal f2 of the third switch assembly.

[0148] It can be seen from the above embodiments that, based on at least one directly connected conductive line formed inside the third switch component, the first component end and the second component end of the third switch component can be connected to the component input ends of the first switch component and the second switch component respectively according to the charging requirements, thereby forming a charging path that meets the charging requirements and realizing flexible distribution of the charging current input to the first electrical input end and / or the second electrical input end.

[0149] 2. A non-directly connected conductive path is formed inside the third switch component:

[0150] The third switch assembly may include a first switch unit and a second switch unit. The number of first component terminals of the third switch assembly may be M, and the number of second component terminals may be N. Wherein, M and N are both integers not less than 1.

[0151] In some embodiments, one of the M first component terminals of the third switch component can be connected to at least two second component terminals through the first switch unit and the second switch unit to form at least two conductive lines; N is an integer not less than 2.

[0152] At least two of the M first component terminals of the third switch component can be connected to one second component terminal through the first switch unit and the second switch unit to form at least two conducting lines.

[0153] (1) If each conductive circuit includes one first switch unit, then one end of the first switch unit in each conductive circuit is connected to the first component end corresponding to the conductive circuit, and the other end of the first switch unit is connected to the second component end corresponding to the conductive circuit. In this case, for each second switch unit, one end of the second switch unit is connected to the first component end corresponding to one conductive circuit; and the other end of the second switch unit is connected to the first component end corresponding to another conductive circuit. It is understood that the other end of the second switch unit can also be connected to the second component end corresponding to another conductive circuit.

[0154] In one example, combining Figure 5B , a circuit structure of the third switch component can be as follows Figure 5G As shown, the third switch component includes three conducting lines formed by three first component terminals and three second component terminals, three first switch units and two second switch units.

[0155] The conducting line X includes a first switch unit A; the conducting line Y includes a first switch unit B; the conducting line Z includes a first switch unit C;

[0156] One end of the second switch unit D is connected to the first component terminal connection x1 corresponding to the conductive line X, that is, connected to one end of the first switch unit A; the other end of the second switch unit D is connected to the first component terminal connection y1 corresponding to the conductive line Y.

[0157] One end of the second switch unit E is connected to the first component end connection y1 corresponding to the conductive line Y, that is, connected to one end of the first switch unit B; the other end of the second switch unit E is connected to the first component end connection z1 corresponding to the conductive line Z, that is, connected to one end of the first switch unit C.

[0158] (2) If each conductive line includes multiple first switch units, one end of the multiple first switch units in each conductive line connected in series is connected to the first component end corresponding to the conductive line, and the other end of the multiple first switch units in series is connected to the second component end corresponding to the conductive line.

[0159] At this time, for each second switch unit, one end of the second switch unit is connected to the first component end corresponding to one conductive path, and the other end of the second switch unit is connected to the first component end corresponding to another conductive path. Alternatively, for each second switch unit, one end of the second switch unit can be connected to one end of any first switch unit in a conductive path that is not connected to the first component end, and the other end of the second switch unit can be connected to one end of any first switch unit in another conductive path that is not connected to the first component end.

[0160] In one example, combining Figure 5A , a circuit structure of the third switch component can be as follows Figure 5H As shown, the third switch assembly includes 3 conducting lines, 6 first switch units, 2 second switch units, 3 first assembly ends and 3 second assembly ends. Each conducting line includes 2 first switch units.

[0161] One end of the second switch unit D is connected to one end of the first switch unit A2 in the conducting line X which is not connected to the first assembly end x1, i.e. to the other end of the first switch unit Al; the other end of the second switch unit D is connected to one end of the first switch unit B2 in the conducting line Y which is not connected to the first assembly end y1, i.e. to the other end of the first switch unit Bl.

[0162] One end of the second switch unit E is connected to one end of the first switch unit B2 in the conducting line Y which is not connected to the first assembly end y1, i.e. to one end of the first switch unit Bl; the other end of the second switch unit E is connected to one end of the first switch unit C2 in the conducting line Z which is not connected to the first assembly end z1, i.e. to one end of the first switch unit Cl.

[0163] Further, the connection mode of the third switch assembly in the power distribution device in the form of non-direct connection with the first switch assembly and the second switch assembly can be connected in the connection mode of Figure 5D-5F , which will not be described herein.

[0164] As can be seen, in the third switch assembly of the above embodiments, the conducting line in the form of non-direct connection can be formed by the first switch unit and the second switch unit, and the flexible distribution of the charging current input from the first electric input end and / or the second electric input end can be realized.

[0165] In some embodiments, one first electric input end can be connected to one assembly input end of the first switch assembly, or can be connected to multiple assembly input ends of the first switch assembly. Correspondingly, one second electric input end can be connected to one assembly input end of the second switch assembly, or can be connected to multiple assembly input ends of the second switch assembly. That is, the number of the first electric input ends can be equal to or not equal to the number of the assembly input ends of the first switch assembly, and correspondingly, the number of the second electric input ends can be equal to or not equal to the number of the assembly input ends of the second switch assembly.

[0166] In some specific embodiments, when the number of the first electric input ends is equal to the number of the assembly input ends of the first switch assembly, the first electric input ends can be connected to the assembly input ends of the first switch assembly one by one. Correspondingly, when the number of the second electric input ends is equal to the number of the assembly input ends of the second switch assembly, the second electric input ends can be connected to the assembly input ends of the second switch assembly one by one. For example, Figure 5D-5F .

[0167] For the first switch assembly and the second switch assembly:

[0168] The first switch assembly can include at least one assembly output end, and the second switch assembly can include at least one assembly output end. When the first switch assembly and the second switch assembly each include one assembly output end, the first switch assembly side and the second switch assembly side can implement wheel charging for multiple electric vehicles; when the first switch assembly and the second switch assembly each include multiple assembly output ends, the first switch assembly side and the second switch assembly side can implement group charging and / or wheel charging for multiple electric vehicles.

[0169] (1) In some embodiments, the first switch assembly and the second switch assembly can be power distribution assemblies with the same assembly structure, or can be power distribution assemblies with different assembly structures. The circuit structure of the power distribution assembly can include:

[0170] Circuit structure 1: The power distribution assembly includes multiple groups of switch units, multiple assembly input ends, and multiple assembly output ends. Each group of switch units includes P third switch units, and one end of the P third switch units in each group of switch units intersects at a point. The corresponding intersecting points of each group of switch units are respectively connected to at least one assembly output end of the power distribution assembly; and the other end of the P third switch units in each group of switch units is respectively connected to at least one assembly input end of the power distribution assembly. Wherein, P is an integer not less than 1.

[0171] As shown in Figure 6A , the power distribution assembly includes 3 groups of switch units, 3 assembly input ends, and 3 assembly output ends.

[0172] The first group of switch units includes third switch units K1, K2, and K3, and one end of K1, K2, and K3 intersects at a point O1. Point O1 is connected to assembly output end 1 of the power distribution assembly in a one-to-one correspondence; the other end of K1, K2, and K3 is respectively connected to assembly input end 1, assembly input end 2, and assembly input end 3 of the power distribution assembly in a one-to-one correspondence.

[0173] The second group of switch units includes third switch units K4, K5, and K6, and one end of K4, K5, and K6 intersects at a point O2. Point O2 is connected to assembly output end 2 of the power distribution assembly in a one-to-one correspondence; the other end of K4, K5, and K6 is respectively connected to assembly input end 1, assembly input end 2, and assembly input end 3 of the power distribution assembly in a one-to-one correspondence.

[0174] The third group of switch units includes third switch units K7, K8, and K9, and one end of K7, K8, and K9 intersects at a point O3. Point O3 is connected to assembly output end 3 of the power distribution assembly in a one-to-one correspondence; the other end of K7, K8, and K9 is respectively connected to assembly input end 1, assembly input end 2, and assembly input end 3 of the power distribution assembly in a one-to-one correspondence.

[0175] Circuit Structure 2: The power distribution assembly includes multiple groups of switch units, multiple component input terminals, multiple component output terminals, and multiple busbars. Each group of switch units includes Q third switch units, and one end of each of the Q third switch units in each group of switch units is connected to at least one busbar, and each busbar is connected to at least one component output terminal of the power distribution assembly; where Q is an integer not less than 1. The other ends of the Q third switch units in each group of switch units intersect at a point, and the corresponding intersection point of each group of switch units is connected to a component input terminal of the power distribution assembly.

[0176] like Figure 6B As shown, the power distribution component includes 3 groups of switch units, 3 component input ends, 3 component output ends and 3 busbars.

[0177] The first group of switch units includes third switch units K10, K11 and K12, and one end of K10, K11 and K12 are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence, and the component output terminal 1, component output terminal 2 and component output terminal 3 of the power distribution component are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence; the other ends of K10, K11 and K12 intersect at a point O1, and point O1 is connected to the component input terminal 1 of the power distribution component.

[0178] The second group of switch units includes third switch units K13, K14 and K15, and one end of K13, K14 and K15 are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence, and the component output terminal 1, component output terminal 2 and component output terminal 3 of the power distribution component are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence; the other ends of K13, K14 and K15 intersect at a point O2, and point O2 is connected to the component input terminal 2 of the power distribution component.

[0179] The third group of switch units includes third switch units K16, K17 and K18, and one end of K16, K17 and K18 are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence, and the component output terminal 1, component output terminal 2 and component output terminal 3 of the power distribution component are respectively connected to bus 1, bus 2 and bus 3 in one-to-one correspondence; the other ends of K16, K17 and K18 intersect at a point O3, and point O3 is connected to the component input terminal 3 of the power distribution component.

[0180] Circuit Structure 3: The power distribution component includes multiple groups of switch units, multiple component input terminals, and multiple component output terminals. Each group of switch units includes R third switch units, where the number R of third switch units is less than the number of component input terminals. One end of the R third switch units in each group of switch units intersects at a point, wherein the corresponding intersection point of each group of switch units is connected to the component output terminals of the power distribution component in a one-to-one correspondence; and the other end of the R third switch units in each group of switch units is connected to two component input terminals of the power distribution component in a one-to-one correspondence. Wherein, R is an integer not less than 1.

[0181] like Figure 6C As shown, the power distribution component includes 3 groups of switch units, 3 component input terminals and 3 component output terminals.

[0182] The first group of switch units includes third switch units K10 and K11, and one end of K10 and K11 intersects at a point O1, point O1 is connected one-to-one with the component output terminal 1 of the power distribution component; the other end of K10 is connected one-to-one with the component input terminal 1 of the power distribution component, and the other end of K11 is connected one-to-one with the component input terminal 2 of the power distribution component.

[0183] The second group of switch units includes third switch units K14 and K15, and one end of K14 and K15 intersects at a point O2, point O2 is connected one-to-one with the component output terminal 2 of the power distribution component; the other end of K14 is connected one-to-one with the component input terminal 2 of the power distribution component, and the other end of K15 is connected one-to-one with the component input terminal 3 of the power distribution component.

[0184] The third group of switch units includes third switch units K17 and K18, and one end of K17 and K18 intersects at a point O3, point O3 is connected one-to-one with the component output terminal 3 of the power distribution component; the other end of K17 is connected one-to-one with the component input terminal 1 of the power distribution component, and the other end of K18 is connected one-to-one with the component input terminal 3 of the power distribution component.

[0185] Circuit Structure 4: A power distribution assembly includes multiple groups of switch units, multiple component input terminals, multiple component output terminals, and multiple busbars. Each group of switch units includes Z third switch units, where the number Z of third switch units is less than the number of component input terminals. One end of each Z third switch unit in each group of switch units intersects at a point, and the corresponding intersection point of each group of switch units is respectively connected to at least one component output terminal of the power distribution assembly; the other end of each Z third switch unit in each group of switch units is respectively connected to at least one busbar; and each busbar is connected to at least one component input terminal of the power distribution assembly; wherein Z is an integer not less than 1.

[0186] like Figure 6DAs shown, the power distribution assembly includes three groups of switch units, three assembly input terminals, three assembly output terminals, and three busbars. Busbar 1 is connected to assembly input terminal 1 of the power distribution assembly, busbar 2 is connected to assembly input terminal 2 of the power distribution assembly, and busbar 3 is connected to assembly input terminal 3 of the power distribution assembly.

[0187] The first group of switch units includes third switch units K10 and K11, and one end of K10 and K11 intersects at a point O1, point O1 is connected one-to-one with the component output terminal 1 of the power distribution component; the other end of K10 is connected to bus 1, and the other end of K11 is connected to bus 2.

[0188] The second group of switch units includes third switch units K14 and K15, and one end of K14 and K15 intersects at a point O2, point O2 is connected one-to-one with the component output end 2 of the power distribution component; the other end of K14 is connected to bus 2, and the other end of K15 is connected to bus 3.

[0189] The third group of switch units includes third switch units K17 and K18, and one end of K17 and K18 intersects at a point O3, point O3 is connected one-to-one with the component output terminal 3 of the power distribution component; the other end of K17 is connected to bus 1, and the other end of K18 is connected to bus 3.

[0190] (2) In some embodiments, the first switch assembly may be a power distribution assembly, and the second switch assembly may be a direct-connection switch assembly composed of a plurality of third switch units, such as direct-connection switch units;

[0191] When the second switch component has multiple component input terminals and component output terminals, each component input terminal is connected one-to-one with one end of each third switch unit, and each component output terminal is connected one-to-one with the other end of each third switch unit.

[0192] When the second switch component has one component input terminal and multiple component output terminals, the component input terminal is connected to one terminal of each third switch unit, and each component output terminal is connected to the other terminal of each third switch unit in a one-to-one correspondence.

[0193] like Figure 6E As shown, the second switch assembly includes three third switch units, three assembly input terminals, and three assembly output terminals. One end (K10, K14, and K18) of the three third switch units is connected to the three assembly input terminals in a one-to-one correspondence, and the other end of the three third switch units is connected to the three assembly output terminals in a one-to-one correspondence.

[0194] like Figure 6FAs shown, the second switch assembly includes three third switch units, one assembly input terminal, and three assembly output terminals. One end of the three third switch units (K10, K14, and K18) intersects at a point, and this intersection point is connected to the one assembly input terminal. The other ends of the three third switch units are connected to the three assembly output terminals in a one-to-one correspondence.

[0195] (3) In some embodiments, the first switch assembly and the second switch assembly can both be directly connected switch assemblies with the same assembly structure consisting of directly connected switch units. That is, in this case, the structures of the first switch assembly and the second switch assembly can refer to Figure 6E and 6F .

[0196] If the structures of the first switch component and the second switch component are as follows Figure 6F As shown, a circuit structure of the power distribution device can be as follows Figure 6G As shown, the number of first electrical input terminals and the number of second electrical input terminals are both 1, and the number of first electrical output terminals and the number of second electrical output terminals are both 3. When the number of first component terminal and the number of second component terminal of the third switch assembly are both 1, the number of component input terminals of the first switch assembly and the number of component input terminals of the second switch assembly are both 1, and the number of component output terminals of the first switch assembly and the number of component output terminals of the second switch assembly are both 3, one first electrical input terminal is connected to one component input terminal of the first switch assembly, and one second electrical input terminal is connected to one component input terminal of the second switch assembly; the first component terminal of the third switch assembly is connected to one component input terminal of the first switch assembly, and the second component terminal is connected to one component input terminal of the second switch assembly. The three component output terminals of the first switch assembly are connected to the three first electrical output terminals in a one-to-one correspondence, and the three component output terminals of the second switch assembly are connected to the three second electrical output terminals in a one-to-one correspondence.

[0197] It should be noted that the first switch component and the second switch component in the power distribution device can be Figures 6A-6F The third switch component can be selected from Figures 5A-5C ,as well as Figure 5G-5H That is to say, the specific structures of the first switch component, the second switch component and the third switch component determine the specific structure of the power distribution device. Therefore, the specific structure of the power distribution device can be selected according to specific business needs, and this application does not limit it here.

[0198] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0199] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0200] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0201] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0202] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims and their equivalents, the embodiments of the present application are also intended to include these modifications and variations.

Claims

1. A power distribution device, characterized in that: The device comprises: a first electrical input terminal, a second electrical input terminal, a first electrical output terminal, and a second electrical output terminal; a first switch assembly, wherein an assembly input terminal of the first switch assembly is connected to the first electrical input terminal, and an assembly output terminal of the first switch assembly is connected to the first electrical output terminal, and is configured to distribute power of the charging current at the assembly input terminal of the first switch assembly and output the distributed charging current from the assembly output terminal of the first switch assembly; a second switch assembly, wherein an assembly input terminal of the second switch assembly is connected to the second electrical input terminal, and an assembly output terminal of the second switch assembly is connected to the second electrical output terminal, and is configured to transmit the charging current in the assembly input terminal of the second switch assembly to the assembly output terminal of the second switch assembly; a third switch assembly, wherein a first assembly terminal of the third switch assembly is connected to an assembly input terminal of the first switch assembly, and a second assembly terminal of the third switch assembly is connected to an assembly input terminal of the second switch assembly; During the charging process, the third switch component is used to output the first charging current in the charging current inputted from the first electrical input terminal sequentially through the first component terminal of the third switch component, the second component terminal of the third switch component, the component input terminal of the second switch component, the component output terminal of the second switch component and the second electrical output terminal; Alternatively, a first charging current among the charging currents inputted from the second electrical input terminal is outputted sequentially through the second component terminal of the third switch component, the first component terminal of the third switch component, the component input terminal of the first switch component, the component output terminal of the first switch component, and the first electrical output terminal; Wherein, the third switch assembly includes a first switch unit; When the number of first component ends of the third switch component is M and the number of second component ends is N, one first component end in the M is connected to at least two second component ends to form at least two conductive lines; the N is an integer not less than 2, and each conductive line includes one of the first switch units.

2. The device according to claim 1, wherein The third switch assembly includes a first switch unit; When the number of first component ends of the third switch component is M and the number of second component ends is M, the M first component ends and the M second component ends are connected one-to-one to form M conductive circuits, each conductive circuit includes at least one first switch unit, and the first switch unit is used to turn on and off the conductive circuit.

3. The device according to claim 2, wherein When the number of component input terminals of the first switch component and the number of first component terminals of the third switch component are both multiple, and the number of component input terminals of the first switch component is less than the number of first component terminals of the third switch component, the component input terminal of each first switch component is connected to multiple first component terminals.

4. The device according to claim 2 or 3, characterized in that When the number of component input terminals of the second switch component and the number of second component terminals of the third switch component are both multiple, and the number of component input terminals of the second switch component is less than the number of second component terminals of the third switch component, the component input terminal of each second switch component is connected to multiple second component terminals.

5. The device according to claim 2, wherein When the number of component input terminals of the first switch component is equal to the number of first component terminals of the third switch component, the first component terminals of the third switch component are connected to the component input terminals of the first switch component in a one-to-one correspondence.

6. The device according to claim 2, wherein When the number of component input terminals of the second switch component is equal to the number of second component terminals of the third switch component, the second component terminals of the third switch component are connected to the component input terminals of the second switch component in a one-to-one correspondence.

7. The device according to claim 1, wherein At least two first component terminals in the M are connected to one second component terminal to form at least two conducting circuits, and each conducting circuit includes one first switch unit.

8. The device according to claim 1 or 7, characterized in that The third switch assembly further includes a second switch unit; For each second switch unit, one end of the second switch unit is connected to the first component end corresponding to one conductive line; the other end of the second switch unit is connected to the first component end corresponding to another conductive line.

9. The device according to any one of claims 1 to 8, characterized in that: When the number of the first electrical input terminals is equal to the number of component input terminals of the first switch component, the first electrical input terminals are connected to the component input terminals of the first switch component in a one-to-one correspondence.

10. The device according to any one of claims 1 to 8, characterized in that: When the number of the second electrical input terminals is equal to the number of the component input terminals of the second switch component, the second electrical input terminals are connected to the component input terminals of the second switch component in a one-to-one correspondence.

11. The device according to claim 1, wherein The first switch component is a first power distribution component; the second switch component is a second power distribution component; The first power distribution component and the second power distribution component have the same component structure, or the first power distribution component and the second power distribution component have different component structures.

12. The device according to claim 1, wherein The first switch assembly is a power distribution assembly; the second switch assembly is a direct-connection switch assembly composed of a plurality of third switch units; Each component input end of the second switch component is connected to one end of a third switch unit in a one-to-one correspondence, and each component output end of the second switch component is connected to the other end of the third switch unit.

13. The device according to claim 1, 11 or 12, characterized in that The first switch assembly includes a plurality of assembly output terminals, and the second switch assembly includes a plurality of assembly output terminals.

14. A charging system, characterized in that: The system comprises: the power distribution device according to any one of claims 1 to 13, at least one power supply module and a controller; The output end of the at least one power supply module is connected to the electrical input end of the power distribution device; the controller is communicatively connected to the at least one power supply module and the power distribution device respectively; The at least one power supply module is used to provide actual charging current for the electric vehicle to be charged; The power distribution device is used to distribute the power of the charging current input from the electrical input end and output the actual charging current corresponding to the electric vehicle to be charged.

15. The system according to claim 14, wherein: The electrical input end of the power distribution device includes a first electrical input end and a second electrical input end; the at least one power supply module includes a first number of power supply modules and a second number of power supply modules; When the number of output ends of the first number of power modules is equal to the number of first electrical input ends of the power distribution device, the output ends of the first number of power modules are connected to the first electrical input ends of the power distribution device in a one-to-one correspondence; When the number of output ends of the second number of power modules is equal to the number of second electrical input ends of the power distribution device, the output ends of the second number of power modules are connected to the second electrical input ends of the power distribution device in a one-to-one correspondence.

16. The system of claim 14, wherein: The at least one power module includes at least one of an energy storage module connected to an energy storage battery, an energy storage module connected to a photovoltaic cell, a universal rechargeable battery, and an energy storage module in a vehicle-to-electricity interconnection mode.

17. A charging device comprising the charging system according to any one of claims 14 to 16 and at least one charging plug; The charging system is used to output the actual charging current for the electric vehicle to be charged; The charging plug is used to receive the actual charging current of the electric vehicle to be charged and charge the electric vehicle to be charged based on the actual charging current.

18. A charging station comprising a plurality of charging devices according to claim 17.

19. A charging method, characterized in that: The method is applied in the charging system according to any one of claims 14 to 16, and the method includes: Obtaining a charging request, where the charging request includes a required charging current of the corresponding electric vehicle received by each charging terminal; Based on the required charging current of each charging terminal, the number of idle power modules is allocated to obtain a power allocation strategy corresponding to each charging terminal; Power distribution is performed on the charging current output by the corresponding power module in the power distribution strategy corresponding to each charging terminal to obtain the actual charging current corresponding to each charging terminal, so that the electric vehicle to be charged can charge the corresponding electric vehicle based on the actual charging current.

20. The method according to claim 19, wherein Based on the required charging current of each charging terminal, the number of idle power modules is allocated to obtain a power allocation strategy corresponding to each charging terminal, including: According to the time sequence of the charging requests and the corresponding required charging currents of the charging terminals, the number of power modules in the idle state is allocated to obtain the number of power modules corresponding to the charging terminals, so as to obtain the power allocation strategy corresponding to the charging terminals.

21. The method according to claim 19 or 20, wherein: Based on the required charging current of each charging terminal, the method further includes allocating the number of idle power modules before obtaining the power allocation strategy corresponding to each charging terminal: If it is detected that the current required charging current corresponding to any charging terminal is less than the preset charging current, a preset number of power modules in the power allocation strategy corresponding to the charging terminal are released; the preset charging current is the maximum output current of a power module; The working states of the preset number of power modules are updated to idle states.

22. An electronic device, characterized in that: The electronic device includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; A processor is configured to implement the method steps described in any one of claims 19 to 21 when executing a program stored in a memory.

23. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 19 to 21 are implemented.

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