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

Abstract

The application provides a power distribution device, a charging system, a charging device and a charging station. The device 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; when the first switch assembly and the second switch assembly each comprise P assembly input ends, each assembly input end of the first switch assembly is respectively connected with M first assembly ends of the third switch assembly; each assembly input end of the second switch assembly is respectively connected with M second assembly ends of the third switch assembly; the 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 technical field of charging and discharging, in particular to a power distribution device, a charging system, a charging device and a charging station. BACKGROUND

[0002] With the progress of society and the enhancement of environmental awareness, electric vehicles gradually gain favor because they use on-board power sources and can solve problems such as tail gas emission of fuel vehicles polluting the environment and high energy consumption. With the rapid development of the new energy electric vehicle industry, more and more occasions need to arrange charging piles. Due to the limitation of site and power supply, it is necessary to timely and reasonably distribute charging power to maximize the use of site and power supply, that is, to realize 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 relative to a single charging pile, that is, one charging pile corresponds to one parking space. The traditional power distribution technology is particularly suitable for charging stations that require large current and fast charging.

[0004] On the one hand, unlike charging stations that require large current and fast charging, charging scenarios such as residential areas have the following notable features: due to limited power supply load and long vehicle parking time, vehicles can be charged with small current for a long time. If the traditional power distribution technology is directly applied to charging scenarios such as residential areas, all power modules need to be called to charge a vehicle or a few vehicles, or multiple vehicles are charged at the same time, which is less likely to occur, thereby resulting in low input cost of power distribution.

[0005] On the other hand, in charging scenarios such as residential areas, although the current total charging demand is small, it will gradually increase with the popularization of electric vehicles in the future. Therefore, the flexible deployment of the charging system and the addition of power modules to meet the future demand for large current charging still need to be effectively guaranteed. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide a power distribution device, a charging system, a charging device and a charging station to solve the above problems existing in the prior art, reduce the input cost of power distribution, and flexibly distribute charging power for each electric vehicle according to actual charging needs.

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

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

[0009] a first switch assembly, a component input end of the first switch assembly being connected with the first electric input end, a component output end of the first switch assembly being connected with the first electric output end, for performing power distribution on the charging current in the component input end of the first switch assembly, and then outputting the power-distributed charging current through the component output end of the first switch assembly;

[0010] a second switch assembly, a component input end of the second switch assembly being connected with the second electric input end, a component output end of the second switch assembly being connected with the second electric output end, for performing power distribution on the charging current in the component input end of the second switch assembly, and then outputting the power-distributed charging current through the component output end of the second switch assembly;

[0011] a third switch assembly, the third switch assembly comprising N first component ends and N second component ends; when the first switch assembly and the second switch assembly each comprise P component input ends, each component input end of the first switch assembly is connected with M first component ends of the third switch assembly, and the M first component ends connected with each component input end of the first switch assembly are different; each component input end of the second switch assembly is connected with M second component ends of the third switch assembly, and the M second component ends connected with each component input end of the second switch assembly are different; wherein the M, the N and the P are all integers greater than 1, and M

[0012] In the charging process, the third switch assembly is configured to sequentially output a first charging current in the charging current input by the first electric input end through the first component end of the third switch assembly, the second component end of the third switch assembly, the component input end of the second switch assembly, the component output end of the second switch assembly and the second electric output end;

[0013] or, sequentially output a second charging current in the charging current input by the second electric input end through the second component end of the third switch assembly, the first component end of the third switch assembly, the component input end of the first switch assembly, the component output end of the first switch assembly and the first electric output end.

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

[0015] The N first component ends and the N second component ends are connected in one-to-one correspondence to form N paths, each path comprising at least one first switch unit, and the first switch unit is configured to turn on and turn off the path.

[0016] In one possible implementation, the first switching component and the second switching component are power distribution components having the same partial matrix component structure, or power distribution components having different partial matrix component structures.

[0017] In one possible implementation, both the first switching component and the second switching component include the P groups of switching units, the P component input terminals, and the P component output terminals; each group of switching units includes the R second switching units, where R is less than P, and R is an integer not less than 1;

[0018] For each group of switching units in the first switching assembly or the second switching assembly, one end of each of the R second switching units in each group of switching units intersects at a point, and the point of intersection is connected to a component output terminal of the power distribution assembly.

[0019] In the first switching assembly, the other ends of the R second switching units are respectively connected to the R component input terminals of the first switching assembly; or,

[0020] In the second switching assembly, the other ends of the R second switching units are respectively connected to the R component input terminals of the second switching assembly.

[0021] In one possible implementation, both the first switching component and the second switching component include the P groups of switching units, the P component input terminals, and the P component output terminals; each group of switching units includes the R second switching units, where R is less than P, and R is an integer not less than 1;

[0022] For each group of switching units in the first switching assembly or the second switching assembly, one end of each of the R second switching units in each group of switching units intersects at a point, and the point of intersection is connected to a component output terminal of the power distribution assembly.

[0023] In the first switching assembly, the other end of the first target second switching unit in the first target group switching unit is connected to the target second component end of the third switching assembly; the other ends of the R-1 second switching units in the first target group switching unit (excluding the first target second switching unit) are connected to one of the R-1 component input ends of the first switching assembly; wherein, the R-1 component input ends are other component input ends besides the component input ends connected to the first component end corresponding to the target second component end, the first target group switching unit is one group of the P group switching units, the first target second switching unit is one of the R second switching units in the first target group switching unit, and the target second component end is any second component end of the third switching assembly; or...

[0024] In the first switching assembly, excluding the first target group of switching units, the other ends of the R second switching units in each group of switching units are respectively connected to the R component input terminals of the first switching assembly; or,

[0025] In the second switch assembly, the other end of the second target second switch unit in the second target group switch unit is connected to the target first component end of the third switch assembly; the other ends of the R-1 second switch units in the second target group switch unit, excluding the second target second switch unit, are respectively connected to the R-1 component input ends of the first switch assembly; wherein, the R-1 component input ends are other component input ends except for the component input ends connected to the second component end corresponding to the target first component end, the second target group switch unit is a group of the P group switch units, the second target second switch unit is one of the R second switch units in the target group switch unit, and the target first component end is any second component end of the third switch assembly;

[0026] In the first switching assembly, the other ends of the R second switching units of each group of switching units other than the second target group switching units are respectively connected to the R component input terminals of the second switching assembly.

[0027] In one possible implementation, when the number of the first electrical input terminals is equal to the number of component input terminals of the first switching assembly, the first electrical input terminals are connected one-to-one with the component input terminals of the first switching assembly.

[0028] In one possible implementation, when the number of the second electrical input terminals is equal to the number of component input terminals of the second switch assembly, the second electrical input terminals are connected one-to-one with the component input terminals of the second switch assembly.

[0029] In one possible implementation, the first switch component includes multiple component output terminals, and the second switch component includes multiple component output terminals.

[0030] In a second aspect, a charging system is provided, which may include: a power distribution device as described in the first aspect, at least one power module, and a controller.

[0031] The output terminal of at least one power module is connected to the electrical input terminal of the power distribution device; the controller is communicatively connected to both the at least one power module and the power distribution device.

[0032] The at least one power module is used to provide actual charging current to the electric vehicle to be charged;

[0033] The power distribution device is used to distribute the power of the charging current input at the electrical input terminal and output the actual charging current corresponding to the electric vehicle to be charged.

[0034] In one possible implementation, the electrical input terminal of the power distribution device includes a first electrical input terminal and a second electrical input terminal; the at least one power module includes a first number of power modules and a second number of power modules;

[0035] When the number of output terminals of the first number of power modules is equal to the number of first electrical input terminals of the power distribution device, the output terminals of the first number of power modules are connected one-to-one with the first electrical input terminals of the power distribution device.

[0036] When the number of output terminals of the second number of power modules is equal to the number of second electrical input terminals of the power distribution device, the output terminals of the second number of power modules are connected one-to-one with the second electrical input terminals of the power distribution device.

[0037] 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 general-purpose rechargeable battery, and an energy storage module in a vehicle-to-grid (V2G) mode.

[0038] Thirdly, a charging device is provided, which may include: the charging system of the second aspect and at least one charging plug;

[0039] The charging system is used to output actual charging current to the electric vehicle to be charged;

[0040] The charging plug is used to receive the actual charging current of the electric vehicle to be charged, and to charge the electric vehicle to be charged based on the actual charging current.

[0041] Fourthly, a charging station is provided, which may include the charging equipment of the third aspect.

[0042] Fifthly, a charging method is provided, which may include:

[0043] Obtain a charging request, wherein the charging request includes the required charging current of the corresponding electric vehicle received by each charging terminal;

[0044] Based on the required charging current of each charging terminal, the number of power modules in the idle state is allocated to obtain the power allocation strategy corresponding to each charging terminal.

[0045] The charging current output by the corresponding power module in the power distribution strategy for each charging terminal is allocated to obtain the actual charging current for each charging terminal, so that the electric vehicle to be charged can charge the corresponding electric vehicle based on the actual charging current.

[0046] In one possible implementation, based on the required charging current of each charging terminal, the number of idle power modules is allocated, and the power allocation strategy corresponding to each charging terminal is obtained, including:

[0047] According to the charging request time sequence and corresponding charging current requirements of each charging terminal, the number of power modules in the idle state 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.

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

[0049] If the current required charging current for any charging terminal is detected to be less than the preset charging current, then 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.

[0050] Update the working status of the preset number of power modules to idle status.

[0051] In a sixth aspect, an electronic device is provided, comprising 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;

[0052] Memory, used to store computer programs;

[0053] When a processor executes a program stored in memory, it implements any of the steps described in the fifth aspect above.

[0054] In a seventh aspect, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when executed by a processor, the computer program implements the steps of any of the methods described in the fifth aspect above.

[0055] The power distribution device provided in this application includes a first electrical input terminal, a second electrical input terminal, a first electrical output terminal, a second electrical output terminal, a first switching assembly, a second switching assembly, and a third switching assembly. The component input terminal of the first switching assembly is connected to the first electrical input terminal, and the component output terminal of the first switching assembly is connected to the first electrical output terminal. The component input terminal of the second switching assembly is connected to the second electrical input terminal, and the component output terminal of the second switching assembly is connected to the second electrical output terminal. When both the first and second switching assemblies include P component input terminals, each component input terminal of the first switching assembly is connected to M first component terminals of the third switching assembly, and the M first component terminals connected to each component input terminal of the first switching assembly are different. Each component input terminal of the second switching assembly is connected to the third switching assembly. The M second component terminals of the switching component are connected, and the M second component terminals connected to each component input terminal of the second switching component are different; where M, N, and P are all integers greater than 1, and M < P ≤ N; during the charging process, the third switching component is used to output the first charging current in the charging current input from the first electrical input terminal through the first component terminal, the second component terminal, the component input terminal, the component output terminal, and the second electrical output terminal of the third switching component in sequence; or, to output the second charging current in the charging current input from the second electrical input terminal through the second component terminal, the first component terminal, the component input terminal, the component output terminal, and the first electrical output terminal of the third switching component in sequence.

[0056] The third switching component in this power distribution device can distribute the charging current input from the first and / or second electrical input terminals to the first and second switching components according to business needs. After secondary distribution by the first and second switching components, the distributed current is transmitted to the corresponding charging terminals connected to the first and second switching components, enabling group charging or round-robin charging of electric vehicles corresponding to the charging terminals, thus improving charging efficiency. Compared with existing technologies, this avoids the power distribution problem caused by calling all power modules to charge a certain vehicle or a few vehicles. Furthermore, when the total charging demand increases, the distribution of the input charging current enables flexible allocation of the charging system, reducing the investment cost of power distribution. Attached Figure Description

[0057] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 A schematic diagram of a charging network to which a power distribution device belongs, provided in an embodiment of this application;

[0059] Figure 2 This is a schematic diagram of a charging system provided in an embodiment of this application;

[0060] Figure 3 A schematic flowchart of a charging method provided in an embodiment of this application;

[0061] Figure 4 This is a schematic diagram of the structure of a power distribution device provided in an embodiment of this application;

[0062] Figure 5A This is a schematic diagram of the internal structure of a third switch assembly provided in an embodiment of this application;

[0063] Figure 5B This is a schematic diagram of another power distribution device provided in an embodiment of this application;

[0064] Figure 6A This is a schematic diagram of the internal structure of a first switch assembly provided in an embodiment of this application;

[0065] Figure 6B This is a schematic diagram of the internal structure of another first switch assembly provided in an embodiment of this application;

[0066] Figure 6C This is a schematic diagram of another power distribution device provided in an embodiment of this application. Detailed Implementation

[0067] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] The power distribution device provided in this application embodiment can be applied to, for example, Figure 1 The charging network topology shown may include an operation platform layer, a charging system layer, and a charging terminal layer connected to the electric vehicle to be charged.

[0069] The operation platform layer, including the cloud platform, is used for the planning, construction, management and service operation of electric vehicle charging facilities, and provides users with more economical, safe and intelligent charging services through the interconnection of information between people, vehicles and charging stations.

[0070] The charging system layer includes at least one charging system for dynamically adjusting the output charging current according to the demand current of the electric vehicle and outputting the charging current to the charging terminal layer.

[0071] It is understandable that, under constant voltage, the charging power of the corresponding charging terminal in the charging terminal layer can be represented by the charging current.

[0072] The charging terminal layer includes at least one charging terminal connected to each charging system for charging the electric vehicle to be charged based on the received charging current.

[0073] Each charging terminal includes at least one charging plug (or "charging gun"). Each charging plug is located in a parking space or a charging position 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 to charge the electric vehicle based on the actual charging current.

[0074] It should be noted that each charging system can be configured with at least one connected charging terminal in a single device to form a charging unit, enabling group charging or rotating charging of the charging terminals. Multiple charging units can form a charging station, which can be used in residential areas and commercial districts to provide power replenishment for electric vehicles and facilitate user travel.

[0075] Furthermore, 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 terminal of at least one power module is connected to the electrical input terminal of the power distribution device; the controller is communicatively connected to both the at least one power module and the power distribution device.

[0076] The power distribution device may include a first electrical input terminal and a second electrical input terminal, and at least one power module includes a first number of power modules and a second number of power modules. When the number of output terminals of the first number of power modules is equal to the number of first electrical input terminals of the power distribution device, the output terminals of the first number of power modules are connected one-to-one with the first electrical input terminals of the power distribution device; when the number of output terminals of the second number of power modules is equal to the number of second electrical input terminals of the power distribution device, the output terminals of the second number of power modules are connected one-to-one with the second electrical input terminals of the power distribution device.

[0077] A power module is used to provide actual charging current to an electric vehicle to be charged based on a first control signal from a controller. At least one power module may include at least one of the following: 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 (V2E) interconnection mode.

[0078] The controller, based on the charging current demand from the electric vehicle to be charged and the idle state of the power module, determines a power allocation strategy and a corresponding charging path strategy, and generates a first control signal corresponding to the power allocation strategy and a second control signal corresponding to the charging path strategy. The controller then sends the first and second control signals to the power module and power distribution device corresponding to the power allocation strategy, respectively. The power allocation strategy provides the actual charging current to the electric vehicle to be charged, and the charging path strategy outputs the actual charging current to the electric vehicle. This controller can be a system control unit (CCU), a microcontroller unit (MCU), or a pre-configured controller.

[0079] The power distribution device is used to distribute the charging current input to the electrical 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.

[0080] Figure 3 This is a schematic flowchart illustrating a charging method provided in an embodiment of this application. Figure 3 As shown, this method is applied in a charging system and may include:

[0081] Step 310: Obtain the charging request.

[0082] The controller in the charging system acquires a charging request and the request time of the charging request. The charging request may include the charging current required by the corresponding electric vehicle received by each charging terminal.

[0083] Step 320: Based on the required charging current of each charging terminal, allocate the number of power modules in the idle state and obtain the power allocation strategy corresponding to each charging terminal.

[0084] Based on the principle that the earlier the charging request, the higher the charging priority, the charging terminal is determined to be in a charging state or a waiting state.

[0085] For example, if, according to the charging priority order, after a charging terminal is plugged in, the charging system has no idle power modules available for allocation, then the charging terminal will be in a waiting state; when any power module becomes idle, that power module will be called to charge the charging terminal.

[0086] In practice, before executing this step, if the controller in the charging system detects that the current demand 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 idle.

[0087] Based on the charging request time sequence and corresponding charging current requirements of each charging terminal, the number of power modules in the idle state 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.

[0088] In some embodiments, if the required charging current of a certain charging terminal decreases, such as when 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 lowest required charging current can be released and allocated to another charging terminal with a higher required charging current, so as to improve the charging efficiency of the other charging terminal.

[0089] Step 330: Perform power allocation on the charging current output by the corresponding power module in the power allocation strategy for each charging terminal to obtain the actual charging current for each charging terminal.

[0090] The power distribution device in the charging system distributes the charging current output by the corresponding power module in the power distribution strategy of each charging terminal to obtain the actual charging current of each charging terminal, so that the electric vehicle to be charged can charge the corresponding electric vehicle based on the actual charging current.

[0091] As can be seen, this method obtains the corresponding power allocation strategy based on the charging current required by each charging terminal, and uses the power allocation strategy to output the charging current (or "charging power") to the corresponding charging terminal to realize group charging or round-robin charging of each charging terminal, reducing the investment cost of power allocation, and flexibly allocating charging power according to actual charging needs.

[0092] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0093] Figure 4 This is a schematic diagram of a power distribution device provided in an embodiment of this 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 switching assembly 450, a second switching assembly 460, and a third switching assembly 470.

[0094] The component input terminal 451 of the first switch assembly 450 is connected to the first electrical input terminal 410, and the component output terminal 452 of the first switch assembly 450 is connected to the first electrical output terminal 430.

[0095] The component input terminal 461 of the second switch assembly 460 is connected to the second electrical input terminal 420, and the component output terminal 462 of the second switch assembly 460 is connected to the second electrical output terminal 440.

[0096] 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 assembly 470 is connected to the component input terminal of the first switch assembly 450, and the second component terminal 472 of the third switch assembly 470 is connected to the component input terminal of the second switch assembly 460.

[0097] Specifically, when the power distribution device is in charging operation, the first switching component 450 performs power distribution on the charging current in the component input terminal of the first switching component, and then outputs the power-distributed charging current from the component output terminal of the first switching component.

[0098] The second switching component is used to transfer the charging current in the component input terminal of the second switching component to the component output terminal of the second switching component.

[0099] The third switching assembly is used to output the first charging current, i.e. a portion of the charging current input to the first electrical input terminal, sequentially through the first component terminal, the second component terminal, the component input terminal, the component output terminal, and the second electrical output terminal of the third switching assembly; or, to output the second charging current, i.e. a portion of the charging current input to the second electrical input terminal, sequentially through the second component terminal, the first component terminal, the component input terminal, the component output terminal, and the first electrical output terminal of the third switching assembly.

[0100] The second charging current in the charging current input to the first electrical input terminal, i.e., another part of the charging current, is output by sequentially passing through the component input terminal, the component output terminal, and the first electrical output terminal of the first switching component; or, the second charging current in the charging current input to the second electrical input terminal is output by sequentially passing through the component input terminal, the component output terminal, and the second electrical output terminal of the second switching component.

[0101] As can be seen, the third switching component in the power distribution device provided in this application embodiment can distribute the charging current input from the first electrical input terminal and / or the second electrical input terminal to the first switching component and the second switching component according to business needs. After the distributed current is further distributed by the first switching component and the second switching component, it is transmitted to the corresponding charging terminal connected to the first switching component and the second switching component, so as to realize group charging or round-trip charging of electric vehicles corresponding to the corresponding charging terminal, thereby improving charging efficiency.

[0102] It should be noted that the charging and discharging processes of the power distribution device are inverse processes, meaning that the order in which the components pass through the power distribution device is different. This will not be elaborated upon here. The following section uses the charging process of the power distribution device as an example to provide a detailed description of the structure of each switching component in the power distribution device.

[0103] Furthermore, the third switching assembly may include a first switching unit, a first component terminal, and a second component terminal.

[0104] When the third switching assembly includes N first switching units, N first component terminals, and N second component terminals, the N first component terminals and the N second component terminals are connected one-to-one to form N paths. Each path contains a first switching unit, which is used to turn the path on and off. N is an integer greater than 1.

[0105] When the third switching assembly includes Q first switching units, N first component terminals, and N second component terminals, the N first component terminals and N second component terminals are connected one-to-one to form N paths, and each path may contain at least one first switching unit. Q is an integer greater than 1 for N.

[0106] If each path contains multiple first switch units, then one end of the multiple first switch units connected in series in each path is connected to the first component end corresponding to that path, and the other end of the multiple first switch units connected in series is connected to the second component end corresponding to that path.

[0107] like Figure 5A As shown, in N=3, each of the three paths includes one first switch unit. One end of the first switch unit A in path X is connected to the first component terminal corresponding to path X by connection x1, and the other end of the first switch unit A is connected to the first component terminal corresponding to path X by connection x2.

[0108] It should be noted that when each path contains multiple first switching units, the number of first switching units contained in different paths of the above M paths can be the same or different, and this application does not limit this.

[0109] As can be seen, in the third switch assembly of the above embodiment, a direct-connection path 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.

[0110] The specific connection methods between the third switch assembly and the first and second switch assemblies are as follows:

[0111] When both the first and second switch components include P component input terminals, each component input terminal of the first switch component is connected to M first component terminals of the third switch component, and the M first component terminals connected to each component input terminal of the first switch component are different. Similarly, each component input terminal of the second switch component is connected to M second component terminals of the third switch component, and the M second component terminals connected to each component input terminal of the second switch component are different. M, N, and P are all integers greater than 1, and M < P ≤ N.

[0112] Where M is less than P, it means that the number of first component terminals connected to each component input terminal of the first switch component is less than the number of component input terminals of the first switch component, and the number of second component terminals connected to each component input terminal of the second switch component is less than the number of component input terminals of the second switch component.

[0113] In the above connection structure, the structure formed by connecting each component input terminal to a portion of the first component terminal of the third switching component is called a partial matrix connection structure. It can be understood that if each component input terminal is connected to each first component terminal of the third switching component, the structure is called a full matrix connection structure. This partial matrix connection structure allows the third switching component to connect to some component input terminals and further to some power modules through a certain number of switching units. That is, it controls the number of switching units and reduces costs while achieving flexible power distribution.

[0114] In one example, such as Figure 5B As shown, the number of component input terminals of the first switch assembly and 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 in the third switch assembly, and the two first component terminals connected to each component input terminal of the first switch assembly are different. For example, component input terminal 1 of the first switch assembly is connected to first component terminals b1 and c1 in the third switch assembly; component input terminal 2 of the first switch assembly is connected to first component terminals d1 and e1 in the third switch assembly; and component input terminal 3 of the first switch assembly is connected to first component terminals a1 and f1 in the third switch assembly.

[0115] Each input terminal of the second switch assembly is connected to two second terminal terminals of the third switch assembly, and the two second terminal terminals connected to each input terminal of the second switch assembly are different. For example, input terminal 1 of the second switch assembly is connected to second terminal a2 and second terminal b2 of the third switch assembly; input terminal 2 of the second switch assembly is connected to second terminal c2 and second terminal d2 of the third switch assembly; and input terminal 3 of the second switch assembly is connected to second terminal e2 and second terminal f2 of the third switch assembly.

[0116] As can be seen from the above embodiments, based on at least one direct-connection path formed within the third switching component, the first and second component ends of the third switching component can be connected to the component input ends of the first and second switching components respectively, according to charging requirements, to form a charging path that meets the charging needs, thereby enabling flexible allocation of the charging current input to the first and / or second electrical input ends. In other words, it is possible to utilize more power modules (or "power modules") to provide a wide range of charging power to the charging terminal, meeting the charging needs of different application scenarios.

[0117] In some embodiments, a first electrical input terminal may be connected to one component input terminal of the first switching assembly or to multiple component input terminals of the first switching assembly. Correspondingly, a second electrical input terminal may be connected to one component input terminal of the second switching assembly or to multiple component input terminals of the second switching assembly. That is, the number of first electrical input terminals may be equal to or unequal to the number of component input terminals of the first switching assembly, and similarly, the number of second electrical input terminals may be equal to or unequal to the number of component input terminals of the second switching assembly.

[0118] In some specific embodiments, when the number of first electrical input terminals is equal to the number of component input terminals of the first switching assembly, the first electrical input terminals can be connected one-to-one with the component input terminals of the first switching assembly. Correspondingly, when the number of second electrical input terminals is equal to the number of component input terminals of the second switching assembly, the second electrical input terminals are connected one-to-one with the component input terminals of the second switching assembly.

[0119] For the first switching assembly and the second switching assembly:

[0120] The first switch assembly may include at least one component output terminal, and the second switch assembly may include at least one component output terminal. When both the first and second switch assemblies include one component output terminal, the first and second switch assembly sides can realize the round-trip charging of multiple electric vehicles; when both the first and second switch assemblies include multiple component output terminals, the first and second switch assembly sides can realize the group charging and / or round-trip charging of multiple electric vehicles.

[0121] In some embodiments, the first switching component and the second switching component can be power distribution components having the same partial matrix component structure, or they can be power distribution components with different partial matrix component structures. That is, due to the partial matrix component structure of the first or second switching component, each component input terminal of the corresponding switching component can only be connected to a portion of the corresponding electrical input terminals; for example, each component input terminal of the first switching component can only be connected to a portion of the first electrical input terminals. Correspondingly, each component output terminal of the corresponding switching component can only receive the charging current input from a portion of the electrical input terminals.

[0122] (1) When the partial matrix component structures of the first switching component and the second switching component are the same, the circuit structures of the first switching component and the second switching component may include:

[0123] Circuit Structure 1: Both the first and second switching components include P groups of switching units, P component input terminals, and P component output terminals; each group of switching units includes R second switching units, where R is less than P and R is an integer not less than 1;

[0124] For each group of switching units in the first or second switching assembly, one end of the R second switching units in each group of switching units intersects at a point, and the point of intersection is connected to the output terminal of a component of the power distribution assembly.

[0125] In the first switching assembly, the other ends of the R second switching units are respectively connected to the two component input terminals of the first switching assembly; or, in the second switching assembly, the other ends of the R second switching units are respectively connected to the two component input terminals of the second switching assembly.

[0126] In one example, combined Figure 5B When the partial matrix component structures of the first and second switching components are the same, the structures of the first and second switching components in the power distribution device can be as follows: Figure 6A As shown, both the first and second switching assemblies include three sets of switching units, three component input terminals, and three component output terminals. Each set of switching units includes two second switching units.

[0127] In the first switch assembly:

[0128] The first set of switch units includes second switch units K1 and K2, and one end of K1 and K2 intersects at a point O1. Point O1 is connected to the component output terminal 1 of the first switch assembly in a one-to-one correspondence. The other end of K1 is connected to the component input terminal 1 of the first switch assembly in a one-to-one correspondence, and the other end of K2 is connected to the component input terminal 2 of the first switch assembly in a one-to-one correspondence.

[0129] The second set of switch units includes second switch units K3 and K4, with one end of K3 and K4 intersecting at a point O2. Point O2 is connected to the component output terminal 2 of the first switch assembly in a one-to-one correspondence. The other end of K3 is connected to the component input terminal 2 of the first switch assembly in a one-to-one correspondence, and the other end of K4 is connected to the component input terminal 3 of the first switch assembly in a one-to-one correspondence.

[0130] The third set of switch units includes the second switch units K5 and K6, with one end of K5 and K6 intersecting at a point O3. Point O3 is connected to the component output terminal 3 of the first switch assembly in a one-to-one correspondence. The other end of K5 is connected to the component input terminal 1 of the first switch assembly in a one-to-one correspondence, and the other end of K6 is connected to the component input terminal 3 of the first switch assembly in a one-to-one correspondence.

[0131] It should be noted that since the internal structure of the first switch assembly and the second switch assembly is the same, the internal structure of the second switch assembly will not be described in detail here.

[0132] Circuit Structure 2: The first and second switching components each consist of P groups of switching units, P component input terminals, P component output terminals, and P busbars. Each group of switching units includes Z second switching units, where Z is less than P. Z is an integer not less than 1.

[0133] For each group of switching units in the first or second switching assembly, one end of each of the Z second switching units in each group of switching units intersects at a point, and the point of intersection is connected to the output terminal of a component of the power distribution assembly.

[0134] In the first switch assembly, the other ends of the Z second switch units are respectively connected to the three busbars in the first switch assembly; or, in the second switch assembly, the other ends of the Z second switch units are respectively connected to the three busbars in the second switch assembly.

[0135] In one example, combined Figure 5A When the partial matrix component structures of the first and second switching components are the same, the structures of the first and second switching components in the power distribution device can be as follows: Figure 6B As shown, both the first and second switch assemblies include 3 sets of switch units, 3 component input terminals, 3 component output terminals, and 3 busbars. Specifically, busbar 1 is connected to component input terminal 1 of the corresponding switch assembly, busbar 2 is connected to component input terminal 2 of the corresponding switch assembly, and busbar 3 is connected to component input terminal 3 of the corresponding switch assembly.

[0136] In the first switch assembly:

[0137] The first set of switch units includes second switch units K1 and K2, and one end of K1 and K2 intersects at a point O1. Point O1 is connected to the component output terminal 1 of the first switch assembly in a one-to-one correspondence. The other end of K1 is connected to bus 1, and the other end of K2 is connected to bus 2.

[0138] The second set of switch units includes second switch units K3 and K4, and one end of K3 and K4 intersects at a point O2. Point O2 is connected to the component output terminal 2 of the first switch assembly in a one-to-one correspondence. The other end of K3 is connected to bus 2, and the other end of K4 is connected to bus 3.

[0139] The third set of switch units includes the second switch units K5 and K6, and one end of K5 and K6 intersects at a point O3. Point O3 is connected to the component output terminal 3 of the first switch assembly in a one-to-one correspondence. The other end of K5 is connected to bus 1, and the other end of K6 is connected to bus 3.

[0140] It should be noted that since the internal structure of the first switch assembly and the second switch assembly is the same, the internal structure of the second switch assembly will not be described in detail here, and it can also be combined with Figure 5B ,Change Figure 6B The structure of the third switch component is not described in detail in this application embodiment.

[0141] It is understood that, based on the above circuit structure, multiple intersections correspond to multiple component outputs. Depending on the actual scenario requirements, multiple intersections can also correspond to one component output, that is, the intersections are connected to one component output. This application does not limit this.

[0142] (2) When the partial matrix component structures of the first switching component and the second switching component are different, the circuit structures of the first switching component and the second switching component can be:

[0143] Both the first and second switching components include P groups of switching units, P component input terminals, and P component output terminals; each group of switching units includes R second switching units, where R is less than P and R is an integer not less than 1.

[0144] For each group of switching units in the first or second switching assembly, one end of the R second switching units in each group of switching units intersects at a point, and the point of intersection is connected to the output terminal of a component of the power distribution assembly.

[0145] In the first switching assembly, the other end of the first target second switching unit of the first target group switching unit is connected to the target second component terminal of the third switching assembly; the other ends of the R-1 second switching units in the first target group switching unit, excluding the first target second switching unit, are respectively connected to the R-1 component input terminals of the first switching assembly; wherein, the R-1 component input terminals are other component input terminals besides the component input terminals connected to the first component terminal corresponding to the target second component terminal; the first target group switching unit is a group of P group switching units, the first target second switching unit is one of the R second switching units in the first target group switching unit, and the target second component terminal is any second component terminal of the third switching assembly; or...

[0146] In the first switching assembly, excluding the first target group switching unit, the other ends of the R second switching units in each of the P-1 group switching units are respectively connected to the R component input terminals of the first switching assembly; or,

[0147] In the second switch assembly, the other end of the second target second switch unit of the second target group switch unit is connected to the target first component end of the third switch assembly; the other ends of the R-1 second switch units in the second target group switch unit, excluding the second target second switch unit, are respectively connected to the R-1 component input ends of the first switch assembly.

[0148] Among them, R-1 component input terminals are other component input terminals except for the component input terminals connected to the second component terminal corresponding to the first component terminal of the target; the second target group switch unit is a group of switch units in P groups; the second target second switch unit is one of the R second switch units in the target group switch unit; and the target first component terminal is any first component terminal of the third switch component.

[0149] In the first switching assembly, excluding the second target group switching unit, the other ends of the R second switching units in each of the P-1 group switching units are respectively connected to the R component input terminals of the second switching assembly.

[0150] In some embodiments, the target second component end and the target first component end may be the second component end and the first component end on the same path.

[0151] In one example, combined Figure 5A When the partial matrix component structures of the first and second switching components are the same, the structures of the first and second switching components in the power distribution device can be as follows: Figure 6C As shown, both the first and second switching assemblies include three sets of switching units, three component input terminals, and three component output terminals. Each set of switching units includes two second switching units.

[0152] In the first switch assembly:

[0153] The first set of switch units includes second switch units K1 and K2, and one end of K1 and K2 intersects at a point O1. Point O1 is connected to the component output terminal 1 of the first switch assembly in a one-to-one correspondence. The other end of K1 is connected to the component input terminal 1 of the first switch assembly in a one-to-one correspondence, and the other end of K2 is connected to the component input terminal 2 of the first switch assembly in a one-to-one correspondence.

[0154] The second set of switch units includes second switch units K3 and K4, with one end of K3 and K4 intersecting at a point O2. Point O2 is connected to the component output terminal 2 of the first switch assembly in a one-to-one correspondence. The other end of K3 is connected to the component input terminal 2 of the first switch assembly in a one-to-one correspondence, and the other end of K4 is connected to the component input terminal 3 of the first switch assembly in a one-to-one correspondence.

[0155] The third group of switch units (i.e., the first target group of switch units) includes second switch units K5 and K6, with one end of K5 and K6 intersecting at point O3. Point O3 is connected to the component output terminal 3 of the first switch assembly in a one-to-one correspondence. The other end of K5 (i.e., the first target second switch unit) is connected to the second component terminal p (i.e., the target second component terminal) of the third switch assembly. Since the second component terminal p is connected to the component input terminal 3 of the second switch assembly in a one-to-one correspondence, the other end of K17 is connected to the component input terminal 3 of the second switch assembly at this time. The other end of K6 is connected to the component input terminal 1 of the first switch assembly in a one-to-one correspondence.

[0156] In the second switching assembly:

[0157] The first set of switch units includes second switch units K7 and K8, with one end of K7 and K8 intersecting at a point O1. Point O1 is connected to the component output terminal 1 of the second switch assembly in a one-to-one correspondence. The other end of K7 is connected to the component input terminal 1 of the second switch assembly in a one-to-one correspondence, and the other end of K8 is connected to the component input terminal 2 of the second switch assembly in a one-to-one correspondence.

[0158] The second set of switch units includes second switch units K9 and K10, and one end of K9 and K10 intersects at a point O2. Point O2 is connected to the component output terminal 2 of the second switch assembly in a one-to-one correspondence. The other end of K9 is connected to the component input terminal 2 of the second switch assembly in a one-to-one correspondence, and the other end of K10 is connected to the component input terminal 3 of the second switch assembly in a one-to-one correspondence.

[0159] The third group of switch units (i.e. the second target group of switch units) includes the second switch units K11 and K12, and one end of K11 and K12 intersects at a point O3. Point O3 is connected to the component output terminal 3 of the second switch assembly in a one-to-one correspondence.

[0160] The other end of K11 (i.e., the second target second switch unit) is connected to the first component terminal q (i.e., the target first component terminal) of the third switch assembly. Since the first component terminal q is connected one-to-one with the component input terminal 3 of the first switch assembly, the other end of K11 is connected to the component input terminal 3 of the first switch assembly at this time. The other end of K12 is connected one-to-one with the component input terminal 1 of the second switch assembly.

[0161] It should be noted that it can also be combined with Figure 5B ,Change Figure 6C The structure of the third switch component is not described in detail in this application embodiment.

[0162] As can be seen, the circuit structure of the above embodiment can avoid conflicts between charging terminals calling power modules, thereby enabling vehicles parked in sequence to have their power modules called to the charging terminal to provide power to the vehicles.

[0163] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0164] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0165] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0166] Although preferred embodiments have been described in this application, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0167] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims in this application and their equivalents, then this application also intends to include these modifications and variations.

Claims

1. A power distribution device, characterized in that, include: First electrical input terminal, second electrical input terminal, first electrical output terminal, and second electrical output terminal; as well as A first switching assembly, wherein the component input terminal of the first switching assembly is connected to the first electrical input terminal and the component output terminal of the first switching assembly is connected to the first electrical output terminal, is used to perform power distribution on the charging current in the component input terminal of the first switching assembly and then output the power-distributed charging current through the component output terminal of the first switching assembly. The second switching assembly has its component input terminal connected to the second electrical input terminal and its component output terminal connected to the second electrical output terminal. It is used to distribute the charging current in the component input terminal of the second switching assembly into power and then output the power-distributed charging current through the component output terminal of the second switching assembly. A third switching component includes N first component terminals and N second component terminals. When both the first and second switching components include P component input terminals, each component input terminal of the first switching component is connected to M first component terminals of the third switching component, and the M first component terminals connected to each component input terminal of the first switching component are all different. Similarly, each component input terminal of the second switching component is connected to M second component terminals of the third switching component, and the M second component terminals connected to each component input terminal of the second switching component are all different. Wherein, M, N, and P are all integers greater than 1, and M < P ≤ N. During the charging process, the third switch assembly is used to output the first charging current from the charging current input at the first electrical input terminal through the first component terminal of the third switch assembly, the second component terminal of the third switch assembly, the component input terminal of the second switch assembly, the component output terminal of the second switch assembly, and the second electrical output terminal in sequence. Alternatively, the second charging current input from the second electrical input terminal can be sequentially passed through the second component terminal of the third switch assembly, the first component terminal of the third switch assembly, the component input terminal of the first switch assembly, the component output terminal of the first switch assembly, and the first electrical output terminal and output. Both the first and second switching components include P groups of switching units, P component input terminals, and P component output terminals; R and P are integers satisfying 1≤R<P; each group of switching units includes R second switching units, and one end of each second switching unit is connected to one component output terminal of the corresponding component. In the first switching assembly, the other end of the first target second switching unit in the first target group switching unit is connected to the target second component terminal of the third switching assembly; the other ends of the R-1 second switching units in the first target group switching unit (excluding the first target second switching unit) are connected to one of the R-1 component input terminals of the first switching assembly; the R-1 component input terminals are other component input terminals besides the component input terminals connected to the first component terminal corresponding to the target second component terminal; the first target group switching unit is one of the P groups of switching units; the first target second switching unit is one of the R second switching units in the first target group switching unit; the target second component terminal is any second component terminal of the third switching assembly; the other ends of the R second switching units in each group of switching units in the first switching assembly (excluding the first target group switching unit) are respectively connected to the R component input terminals of the first switching assembly; In the second switching assembly, the other end of the second target second switching unit in the second target group switching unit is connected to the target first component end of the third switching assembly; the other ends of the R-1 second switching units in the second target group switching unit, excluding the second target second switching unit, are respectively connected to the R-1 component input ends of the first switching assembly; the R-1 component input ends are other component input ends besides the component input ends connected to the second component end corresponding to the target first component end; the second target group switching unit is one of the P groups of switching units; the second target second switching unit is one of the R second switching units in the target group switching unit; the target first component end is any second component end of the third switching assembly; the other ends of the R second switching units in each group of switching units in the first switching assembly, excluding the second target group switching unit, are respectively connected to the R component input ends of the second switching assembly.

2. The power distribution device as described in claim 1, characterized in that, The third switch assembly includes a first switch unit; The N first component terminals are connected one-to-one with the N second component terminals to form N paths. Each path includes at least one first switch unit, which is used to turn the path on and off.

3. The power distribution device as described in claim 1, characterized in that, The first switching component and the second switching component are power distribution components with the same partial matrix component structure, or power distribution components with different partial matrix component structures.

4. The power distribution device as described in claim 3, characterized in that, Both the first switch assembly and the second switch assembly include the P groups of switch units, the P component input terminals, and the P component output terminals; each group of switch units includes the R second switch units, where R is less than P, and R is an integer not less than 1; For each group of switching units in the first switching assembly or the second switching assembly, one end of each of the R second switching units in each group of switching units intersects at a point, and the point of intersection is connected to a component output terminal of the power distribution assembly. In the first switching assembly, the other ends of the R second switching units are respectively connected to the R component input terminals of the first switching assembly; or, In the second switching assembly, the other ends of the R second switching units are respectively connected to the R component input terminals of the second switching assembly.

5. The power distribution device according to any one of claims 1-4, 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 assembly, the first electrical input terminals are connected one-to-one with the component input terminals of the first switch assembly.

6. The power distribution device according to any one of claims 1-4, 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 assembly, the second electrical input terminals are connected one-to-one with the component input terminals of the second switch assembly.

7. The power distribution device as claimed in claim 1, characterized in that, The first switch assembly includes multiple component output terminals, and the second switch assembly includes multiple component output terminals.

8. A charging system, characterized in that, include: The power distribution device according to any one of claims 1-7, at least one power module and controller; The output terminal of at least one power module is connected to the electrical input terminal of the power distribution device; the controller is communicatively connected to both the at least one power module and the power distribution device. The at least one power module is used to provide actual charging current to the electric vehicle to be charged; The power distribution device is used to distribute the power of the charging current input at the electrical input terminal and output the actual charging current corresponding to the electric vehicle to be charged.

9. The charging system as described in claim 8, characterized in that, The power distribution device includes a first electrical input terminal and a second electrical input terminal; the at least one power module includes a first number of power modules and a second number of power modules. When the number of output terminals of the first number of power modules is equal to the number of first electrical input terminals of the power distribution device, the output terminals of the first number of power modules are connected one-to-one with the first electrical input terminals of the power distribution device. When the number of output terminals of the second number of power modules is equal to the number of second electrical input terminals of the power distribution device, the output terminals of the second number of power modules are connected one-to-one with the second electrical input terminals of the power distribution device.

10. The charging system as described in claim 8, characterized in that, The at least one power module includes at least one of the following: 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.

11. A charging device, characterized in that, Includes the charging system as described in any one of claims 8-10 and at least one charging plug; The charging system is used to output actual charging current to 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 to charge the electric vehicle to be charged based on the actual charging current.

12. A charging station, characterized in that, It includes multiple charging devices as described in claim 11.

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