Power distribution device, charging device, equipment, control method and system

Abstract

The present invention discloses a power distribution device, a charging device, an equipment, a control method and a system. The switch units of the power distribution device are all on a closed-loop circuit. Current input terminals are connected between adjacent switch units on the closed-loop circuit, and each current input terminal is connected to multiple current output terminals. The structure is simple, and the number of switch units in the power distribution device is greatly reduced, thereby reducing the cost of the power distribution device. At the same time, the software control logic of the switch is simplified, thereby reducing the programming amount, reducing the programming difficulty, and improving the programming efficiency.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicle charging, and in particular to a power distribution device, a charging device, equipment, a control method and a system. Background Art

[0002] Charging stations for electric vehicles are usually equipped with multiple charging power units for converting AC power input from the power grid into DC power, and a charging topology for allocating charging power units to charging terminals (charging guns). The charging topology includes numerous contactors, which allocate charging power units to charging terminals by controlling the opening status of the contactors.

[0003] At present, the charging topology mainly adopts the full matrix topology. However, the full matrix topology requires a large number of contactors. Generally, the number of contactors is several times the number of charging power units, resulting in a high cost of the charging topology. At the same time, the software control logic of the contactor is more complex, resulting in a large amount of software programming, high programming difficulty, and low programming efficiency.

[0004] Therefore, how to provide a solution to the above technical problems is a problem that technicians in this field currently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a power distribution device, a charging device, an equipment, a control method and a system, which greatly reduces the number of switch units in the power distribution device, thereby reducing the cost of the power distribution device, and at the same time simplifies the software control logic of the switch, thereby reducing the programming amount, reducing the programming difficulty and improving the programming efficiency.

[0006] To solve the above technical problems, the present invention provides a power distribution device, comprising:

[0007] Multiple current input terminals;

[0008] at least three groups of first switch units;

[0009] a first circuit, wherein a plurality of groups of the first switch units are sequentially connected to form a closed loop of the first circuit, adjacent first switch units are each provided with a first connection terminal, and each first connection terminal is connected to at least one of the current input terminals;

[0010] Current output terminal, each of the current input terminals is connected to a plurality of the current output terminals.

[0011] Preferably, the number of the first switch units is three groups.

[0012] Preferably, each of the current input terminals is connected to two of the current output terminals.

[0013] Preferably, the power distribution device further includes:

[0014] at least three groups of second switch units;

[0015] A second circuit, wherein multiple groups of the second switch units are sequentially connected to form a closed loop of the second circuit, and adjacently connected second switch units each have a second connection terminal, and each second connection terminal is connected to at least one of the current input terminals.

[0016] Preferably, the number of the second switch units is three.

[0017] Preferably, the current input terminal connected to the first terminal and the second terminal corresponding to the first terminal in structure are the same as the current output terminal connected to the first terminal.

[0018] To solve the above technical problems, the present invention further provides a charging device, comprising any of the above power distribution devices, and further comprising:

[0019] A charging power unit is connected to the current input end.

[0020] In order to solve the above technical problems, the present invention further provides a charging device, comprising the above charging device, and further comprising:

[0021] A charging terminal is connected to the current output end; wherein all charging power units corresponding to the current input end at the same terminal constitute the same power module group.

[0022] Preferably, the charging device further includes:

[0023] A third switch unit, wherein the current input end is connected to the current output end through the third switch unit.

[0024] To solve the above technical problems, the present invention further provides a control method, which is applied to any of the above charging devices, comprising:

[0025] The power module group closest to the target terminal in terms of connection position is used as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted in a preset order; the target terminal is any charging terminal;

[0026] Determining, according to the power demand of the target terminal and its corresponding power supply priority, a target power module group to be allocated to the target terminal from the idle power module groups;

[0027] By controlling the switch units in the charging device, the target terminal is connected to the target power module group to provide the target terminal with the required electrical energy.

[0028] To solve the above technical problems, the present invention further provides a control system, which is applied to any of the above charging devices, comprising:

[0029] a power supply priority setting module, configured to select a power module group closest to a target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted in a preset order; the target terminal is any charging terminal;

[0030] a power module group allocating module, configured to determine a target power module group to be allocated to the target terminal from the idle power module groups according to the power demand of the target terminal and its corresponding power supply priority;

[0031] The switch unit control module is used to connect the target terminal with the target power module group by controlling the switch units in the charging device to provide the target terminal with the required electric energy.

[0032] The present invention provides a power distribution device, wherein the switch units of the power distribution device are all on a closed-loop circuit, current input terminals are connected between adjacent switch units on the closed-loop circuit, and each current input terminal is connected to multiple current output terminals. The structure is simple, and the number of switch units in the power distribution device is greatly reduced, thereby reducing the cost of the power distribution device. At the same time, the software control logic of the switch is simplified, thereby reducing the programming amount, reducing the programming difficulty, and improving the programming efficiency.

[0033] The present invention also provides a charging device, equipment, control method and system, which have the same beneficial effects as the above-mentioned power distribution device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic structural diagram of a first power distribution device provided in an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a second power distribution device provided in an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of a first charging device provided in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the electrical connection principle of the first charging device provided by an embodiment of the present invention;

[0039] Figure 5 A schematic structural diagram of a second charging device provided in an embodiment of the present invention;

[0040] Figure 6 A schematic structural diagram of a third charging device provided in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the electrical connection principle of the third charging device provided by an embodiment of the present invention;

[0042] Figure 8 A flow chart of a control method provided by an embodiment of the present invention;

[0043] Figure 9 A schematic structural diagram of a control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The core of the present invention is to provide a power distribution device, charging device, equipment, control method and system. The number of switch units in the power distribution device is greatly reduced, thereby reducing the cost of the power distribution device. At the same time, the software control logic of the switch is simplified, thereby reducing the programming amount, reducing the programming difficulty and improving the programming efficiency.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0046] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a first power distribution device provided in an embodiment of the present invention.

[0047] The power distribution device comprises:

[0048] Multiple current input terminals A;

[0049] At least three groups of first switch units U1;

[0050] A first circuit, wherein multiple groups of first switch units U1 are sequentially connected to form a closed-loop first circuit, wherein adjacent first switch units U1 are each provided with a first terminal B, and each first terminal B is connected to at least one current input terminal A;

[0051] Current output terminal, each current input terminal A is connected to multiple current output terminals.

[0052] Specifically, the power distribution device includes multiple current input terminals A and current output terminals; wherein each current input terminal A is connected to multiple current output terminals (of course, each current input terminal A can also be connected to only one current output terminal, and this application does not make any special limitations here), the current input terminal A is used to connect to the charging power unit, and the current output terminal is used to connect to the charging terminal.

[0053] The power distribution device further includes first switch units U1. The first switch units U1 are provided in at least three groups, and the groups of first switch units U1 are sequentially connected to form a closed-loop first circuit. Adjacent first switch units U1 are each provided with a first connection terminal B, and each first connection terminal B is connected to at least one current input terminal A.

[0054] It can be seen that the switch units of the power distribution device are all on a closed-loop circuit, and current input terminals are connected between adjacent switch units on the closed-loop circuit, and each current input terminal is connected to multiple current output terminals. The structure is simple, and the number of switch units of the power distribution device is greatly reduced, thereby reducing the cost of the power distribution device. At the same time, the software control logic of the switch is simplified, thereby reducing the amount of programming, reducing the programming difficulty, and improving programming efficiency.

[0055] Based on the above embodiment:

[0056] As an optional embodiment, the number of the first switch units U1 is three groups.

[0057] Specifically, the number of the first switch units U1 in the present application is three groups. Of course, the number of the first switch units U1 in the present application may also be greater than three groups, and the present application does not make any special limitation here.

[0058] As an optional embodiment, each current input terminal A is connected to two current output terminals.

[0059] Specifically, each current input terminal A of the present application is connected to two current output terminals. When the number of first switch units U1 of the present application is three, there are three first connection terminals B and six current output terminals. The six current output terminals can be connected to six charging terminals one by one.

[0060] Please refer to Figure 2 , Figure 2 This is a structural diagram of a second power distribution device provided by an embodiment of the present invention.

[0061] As an optional embodiment, the power distribution device further includes:

[0062] At least three groups of second switch units U2;

[0063] The second circuit, multiple groups of second switch units U2 are connected in sequence to form a closed-loop second circuit, and adjacent second switch units U2 are each provided with a second connection terminal C, and each second connection terminal C is connected to at least one current input terminal A.

[0064] Furthermore, the power distribution device further includes second switch units U2. The number of second switch units U2 is at least three, and the multiple groups of second switch units U2 are sequentially connected to form a closed-loop second circuit. Adjacent second switch units U2 are each provided with a second connection terminal C, and each second connection terminal C is connected to at least one current input terminal A.

[0065] As an optional embodiment, the number of the second switch units U2 is three groups.

[0066] Specifically, the number of the second switch units U2 of the present application is three groups. Of course, the number of the second switch units U2 of the present application may also be greater than three groups, and the present application does not make any special limitation here.

[0067] As an optional embodiment, the first wiring terminal B and its structurally corresponding second wiring terminal C are connected to the same current input terminal A as the current output terminal connected thereto.

[0068] Specifically, when the number of first switch units U1 of the present application is three, there are three first terminals B; when the number of second switch units U2 of the present application is three, there are three second terminals C. The three first terminals B correspond one-to-one with the three second terminals C, and the current input terminal A connected to the first terminal B and the corresponding second terminal C in structure are the same as the current output terminal connected to the first terminal B. That is, the first terminal B and the corresponding second terminal C in structure are connected to the same charging terminal.

[0069] If each current input terminal A is connected to two current output terminals, then when the number of first switch units U1 in this application is three groups and the number of second switch units U2 is three groups, there are a total of 6 current output terminals, and the 6 current output terminals can be connected to 6 charging terminals one by one.

[0070] The present application also provides a charging device, comprising any of the above-mentioned power distribution devices, and further comprising:

[0071] The charging power unit is connected to the current input terminal A.

[0072] Specifically, the charging device of the present application includes a power distribution device and a charging power unit, and the charging power unit is connected to the current input terminal A in the power distribution device. More specifically, in the power distribution device, each current input terminal A can be connected to a charging power unit. Of course, each current input terminal A can also be connected to multiple charging power units or no charging power unit, and this application does not make any special restrictions here.

[0073] For an introduction to the power distribution device in the charging device provided in this application, please refer to the above-mentioned embodiments of the power distribution device, and this application will not go into details here.

[0074] The present application also provides a charging device, comprising the above-mentioned charging device, and further comprising:

[0075] The charging terminal is connected to the current output terminal; wherein, all the charging power units connected to the current input terminal A at the same terminal constitute the same power module group.

[0076] Specifically, the charging device of the present application includes a charging device and a charging terminal (such as a charging gun), and the charging terminal is connected to the current output terminal in the power distribution device. More specifically, in the power distribution device, each current output terminal can be connected to a charging terminal, or multiple current output terminals can be connected to the same charging terminal. This application does not make any special restrictions here.

[0077] It should be noted that all charging power units connected to the current input terminal A at the same terminal constitute the same power module group. For example, if the same first terminal B is connected to at least one current input terminal A, all charging power units connected to these current input terminals A constitute the same power module group; if the same second terminal C is connected to at least one current input terminal A, all charging power units connected to these current input terminals A constitute the same power module group.

[0078] As an optional embodiment, the charging device further includes:

[0079] The third switch unit U3, the current input terminal A is connected to the current output terminal through the third switch unit U3.

[0080] Furthermore, the charging device of the present application further includes a third switch unit U3, and the current input terminal A is connected to the current output terminal through at least one third switch unit U3.

[0081] Specifically, when each current input terminal A is connected to two current output terminals, the following can be obtained: Figure 3 The charging equipment shown, Figure 4 For example Figure 3The electrical connection principle diagram of the charging device shown in FIG. The charging device includes 6 charging terminals (denoted by "M"), 3 power module groups (denoted by "P") and 9 switch units (denoted by "K"). Of course, each current input terminal A can also be connected to only one current output terminal, such as Figure 5 As shown, the charging device includes 3 charging terminals (denoted by "M"), 3 power module groups (denoted by "P") and 6 groups of switch units (denoted by "K"). It should be noted that each group of switch units contains two switch units, and the two switch units are represented by + and - respectively. For example, in the first group of switch units K1, one switch unit is represented by K1+ and the other switch unit is represented by K1- (the same is true for other groups of switch units, which will not be repeated in this application). Based on Figure 3 In the charging device shown, each charging terminal can directly call all power module groups.

[0082] In addition, according to the above embodiment, the following can also be obtained: Figure 6 The charging equipment shown, Figure 7 For example Figure 6 The electrical connection principle diagram of the charging device is shown in the figure. The charging device includes 6 charging terminals (denoted by "M"), 6 power module groups (denoted by "P") and 16 switch units (denoted by "K"). Figure 6 In the charging device shown, each charging terminal can directly call all power module groups, and each charging terminal can be assigned to at least one charging power group.

[0083] For an introduction to the charging device in the charging equipment provided in this application, please refer to the above-mentioned embodiments of the charging device, and this application will not go into details here.

[0084] Please refer to Figure 8 , Figure 8 A flow chart of a control method provided by an embodiment of the present invention.

[0085] The control method is applicable to any of the above charging devices (the following embodiments are described as follows Figure 3 As an example, the charging device shown in Figure 6 The charging principle of the charging device shown is similar to that of the charging device, and reference can be made to each other, and this application will not repeat it here), including:

[0086] Step S1: a power module group closest to a target terminal in connection position is used as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted according to a preset order.

[0087] Specifically, the present application sets the power supply priority of each power module group for each charging terminal, that is, sets the power supply order of each power module group for each charging terminal. For the target terminal (any charging terminal), the power module group with the highest power supply priority will be given priority to supply power to the target terminal. For example, the present application may set the power module group closest to the target terminal in terms of connection position as the power module group with the highest power supply priority corresponding to the target terminal, and the power supply priorities of the remaining power module groups are arranged according to a preset order.

[0088] More specifically, the present application may number the power module groups connected to the first circuit in a clockwise direction according to their connection positions in the closed-loop circuit. Then, for the target terminal, except for the power module group with the highest power supply priority, the larger the number of the remaining power module groups, the lower the power supply priority (or the larger the power value that the remaining power module groups can provide, the higher the power supply priority).

[0089] like Figure 3 As shown, the power module groups connected to the first circuit are P1, P2, and P3. They are numbered clockwise according to their connection positions in the closed-loop circuit: power module group P1 is numbered 1, power module group P2 is numbered 2, and power module group P3 is numbered 3. The power module group closest to the connection position of charging terminals M1 and M4 is P1, the power module group closest to the connection position of charging terminals M2 and M5 is P2, and the power module group closest to the connection position of charging terminals M3 and M6 is P3.

[0090] Power module group P1 is the power module group with the highest power supply priority corresponding to charging terminals M1 and M4, and the power supply priorities of the remaining power module groups are, from high to low, P2 and P3. Power module group P2 is the power module group with the highest power supply priority corresponding to charging terminals M2 and M5, and the power supply priorities of the remaining power module groups are, from high to low, P1 and P3. Power module group P3 is the power module group with the highest power supply priority corresponding to charging terminals M3 and M6, and the power supply priorities of the remaining power module groups are, from high to low, P1 and P2. For details, please refer to Table 1 below:

[0091] Table 1

[0092]

[0093] Step S2: According to the power demand of the target terminal and its corresponding power supply priority, a target power module group allocated to the target terminal is determined from the idle power module groups.

[0094] Specifically, the present application may determine the target power module group allocated to the target terminal from the idle power module groups according to the power demand of the target terminal and the power supply priority corresponding to the target terminal.

[0095] Step S3: connecting the target terminal to the target power module group by controlling the switch units in the charging device to provide the target terminal with the required electrical energy.

[0096] Specifically, after determining the target power module group assigned to the target terminal, the present application connects the target terminal with the target power module group by controlling the switch units in the charging device, thereby providing the target terminal with the required electrical energy.

[0097] As an optional embodiment, the process of determining a target power module group allocated to the target terminal from idle power module groups according to the power requirement of the target terminal and its corresponding power supply priority includes:

[0098] Determining the number of power module groups allocated to the target terminal based on the power demand of the target terminal and the total number of idle power module groups; wherein different power module groups contain the same number of charging power units;

[0099] According to the power supply priority corresponding to the target terminal and the number of power module groups to be allocated, a target power module group allocated to the target terminal is determined from the idle power module groups.

[0100] Specifically, the present application can determine the number of power module groups allocated to the target terminal based on the power demand of the target terminal and the total number of idle power module groups. Specifically, the number of charging power units contained in different power module groups is the same, so the power value that each power module group can provide is the same. It can be understood that, when the power value that each power module group can provide is known, the number of power module groups allocated to the target terminal can be determined based on the power demand of the target terminal and the total number of idle power module groups (the basis for quantity allocation: when the number of power module groups allocated to the target terminal does not exceed the total number of idle power module groups, the power demand of the target terminal is met to the greatest extent).

[0101] Then, this application determines the target power module groups allocated to the target terminal from the idle power module groups according to the number of power module groups corresponding to the target terminal and in descending order of the power supply priority corresponding to the target terminal for use by the target terminal.

[0102] As an optional embodiment, the process of determining the number of power module groups allocated to the target terminal according to the power requirement of the target terminal and the total number of idle power module groups includes:

[0103] Determine the charging priority of each charging terminal according to a preset charging priority setting strategy;

[0104] Under preset constraints, the number of power module groups allocated to each charging terminal is determined accordingly based on the power requirements of each charging terminal and the total number of idle power module groups; wherein the preset constraints include giving priority to meeting the power requirements of charging terminals with higher charging priorities, and giving priority to allocating the idle power module groups with the highest power supply priority corresponding to each charging terminal with power requirements to each of the charging terminals.

[0105] Specifically, the present application sets up a charging priority setting strategy in advance, which can be: the charging priority of the charging terminal that is first connected to the device to be charged (electric vehicle) is higher, and the power demand of the charging terminal with higher charging priority is met first; it can also be: directly set the charging priority of each charging terminal. Once set, the charging priority of each charging terminal will remain fixed.

[0106] Based on this, the present application determines the charging priority of each charging terminal according to a preset charging priority setting strategy, and then, under the constraints of giving priority to meeting the power requirements of charging terminals with higher charging priorities, and giving priority to allocating the idle power module groups with the highest power supply priority corresponding to each charging terminal with power requirements to each of the charging terminals, determines the number of power module groups allocated to each charging terminal according to the power requirements of each charging terminal and the total number of idle power module groups.

[0107] As an optional embodiment, the process of determining a target power module group allocated to the target terminal from idle power module groups according to the power supply priority and the number of power module groups corresponding to the target terminal includes:

[0108] Prioritize allocating the idle power module groups with the highest power supply priority corresponding to each charging terminal with power demand to each charging terminal;

[0109] Based on the power module group with the highest power supply priority, the remaining idle power module groups are allocated to each charging terminal with power demand in descending order of charging priority, according to the power supply priority and the number of power module groups corresponding to each charging terminal with power demand.

[0110] Specifically, the present application prioritizes allocating the idle power module groups with the highest power supply priority corresponding to each charging terminal with power demand to each charging terminal, and then, based on the allocated power module groups with the highest power supply priority, allocates the remaining idle power module groups to each charging terminal with power demand in order of charging priority from high to low, according to the power supply priority and the number of power module groups corresponding to each charging terminal with power demand.

[0111] Taking charging terminals M1 and M2 as an example, the charging priority of charging terminal M1 is higher than that of charging terminal M2. If charging terminals M1 and M2 have power requirements, the power module group P1 with the highest power supply priority corresponding to charging terminal M1 is preferentially allocated to charging terminal M1, and the power module group P2 with the highest power supply priority corresponding to charging terminal M2 is preferentially allocated to charging terminal M2. Then, based on the power module group with the highest power supply priority that has been allocated, the remaining idle power module groups are first allocated to charging terminal M1 according to the power supply priority and the number of power module groups corresponding to charging terminal M1, in descending order of charging priority (skipping the already allocated power module groups). Then, based on the power supply priority and the number of power module groups corresponding to charging terminal M2, in descending order of charging priority, the remaining idle power module groups are allocated to charging terminal M2 (skipping the already allocated power module groups). The specific allocation situations are shown in Table 2 below:

[0112] Table 2

[0113]

[0114] Furthermore, the present application can also determine the number of power module groups that need to be disconnected by the target terminal according to the reduced power demand of the target terminal when the power demand of the target terminal is reduced, and then control each switch unit to preferentially disconnect the connection between the target terminal and its corresponding power module group with a lower power supply priority according to the number of power module groups that need to be disconnected by the target terminal, so as to meet the reduced power demand of the target terminal.

[0115] For example, taking charging terminal M1 as an example, if charging terminal M1 has a power demand, it is determined that three power module groups are allocated to charging terminal M1. As shown in the M1 row in Table 1 above, the three power module groups allocated to charging terminal M1 are P1, P2, and P3. When the power demand of charging terminal M1 decreases, the number of power module groups that charging terminal M1 needs to disconnect is determined based on the reduced power demand of charging terminal M1. Then, based on the number of power module groups that charging terminal M1 needs to disconnect, each switch unit is controlled to prioritize disconnecting charging terminal M1 from its corresponding power module groups with lower power supply priorities. For example, if charging terminal M1 needs to disconnect two power module groups, each switch unit is controlled to prioritize disconnecting charging terminal M1 from power module groups P2 and P3.

[0116] In addition, the present application can also determine whether there are terminals to be optimized that do not meet the power requirements in each charging terminal when a power module group is released in the charging system. If there are terminals to be optimized that do not meet the power requirements, the charging priority of each terminal to be optimized is determined according to the preset charging priority setting strategy, and the released power module group is allocated to each terminal to be optimized in descending order of charging priority, and each switch unit is controlled to connect the connection line between the newly allocated power module group and its corresponding terminal to be optimized until each terminal to be optimized meets the power requirements. It should be noted that for any charging terminal in waiting, only when the power module group with the highest power supply priority corresponding to itself is released, the charging terminal can call the idle power module group for use, otherwise it will continue to wait. After all charging terminals have finished charging, all switch units are disconnected to release the power module group.

[0117] For example, taking charging terminals M1, M2, M3, and M4 as an example, the charging priorities of charging terminals M1, M2, M3, and M4 are M1, M2, M3, and M4 from high to low. If charging terminals M1, M2, M3, and M4 have power requirements, the power module group P1 with the highest power supply priority corresponding to charging terminal M1 will be preferentially assigned to charging terminal M1, the power module group P2 with the highest power supply priority corresponding to charging terminal M2 will be assigned to charging terminal M2, and the power module group P3 with the highest power supply priority corresponding to charging terminal M3 will be assigned to charging terminal M3. At this time, charging terminal M4 has no power module group to be assigned and is in a waiting state. When power module group P1 is released, power module group P1 will be called to charge charging terminal M4, as shown in Table 3 below:

[0118] Table 3

[0119]

[0120]

[0121] Please refer to Figure 9 , Figure 9 A schematic structural diagram of a control system provided by an embodiment of the present invention.

[0122] The control system is applied to any of the above-mentioned charging devices, including:

[0123] a power supply priority setting module 1, configured to select a power module group closest to a target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted in a preset order; the target terminal is any charging terminal;

[0124] A power module group allocation module 2 is configured to determine a target power module group to be allocated to the target terminal from among the idle power module groups according to the power demand of the target terminal and its corresponding power supply priority;

[0125] The switch unit control module 3 is used to connect the target terminal with the target power module group by controlling the switch units in the charging device to provide the target terminal with the required electric energy.

[0126] For an introduction to the control system provided in this application, please refer to the embodiments of the above-mentioned control method, and this application will not go into details here.

[0127] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0128] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power distribution device, characterized in that: include: Multiple current input terminals; at least three groups of first switch units; a first circuit, wherein a plurality of groups of the first switch units are sequentially connected to form a closed loop of the first circuit, adjacent first switch units are each provided with a first connection terminal, and each first connection terminal is connected to at least one of the current input terminals; a current output terminal, each of the current input terminals being connected to a plurality of the current output terminals; The power distribution device further includes: at least three groups of second switch units; A second circuit, wherein multiple groups of the second switch units are sequentially connected to form a closed loop of the second circuit, and adjacently connected second switch units each have a second connection terminal, and each second connection terminal is connected to at least one of the current input terminals.

2. The power distribution device according to claim 1, wherein: The number of the first switch units is three.

3. The power distribution device according to claim 2, wherein: Each of the current input terminals is connected to the two current output terminals.

4. The power distribution device according to claim 1, wherein: The number of the second switch units is three.

5. The power distribution device according to claim 4, wherein: The first terminal and the second terminal corresponding in structure have the same current input terminal connected thereto and the same current output terminal connected thereto.

6. A charging device, characterized in that: The power distribution device according to any one of claims 1 to 5, further comprising: A charging power unit is connected to the current input end.

7. A charging device, characterized in that: The charging device according to claim 6 further comprises: A charging terminal is connected to the current output end; wherein all charging power units corresponding to the current input end at the same terminal constitute the same power module group.

8. The charging device according to claim 7, wherein: The charging device further includes: A third switch unit, wherein the current input end is connected to the current output end through the third switch unit.

9. A control method, characterized in that: The charging device according to claim 7 or 8 comprises: The power module group closest to the target terminal in terms of connection position is used as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted in a preset order; the target terminal is any charging terminal; Determining, according to the power demand of the target terminal and its corresponding power supply priority, a target power module group to be allocated to the target terminal from the idle power module groups; By controlling the switch units in the charging device, the target terminal is connected to the target power module group to provide the target terminal with the required electrical energy.

10. A control system, characterized in that: The charging device according to claim 7 or 8 comprises: a power supply priority setting module, configured to select a power module group closest to a target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal; wherein the power supply priorities of the remaining power module groups are sorted in a preset order; the target terminal is any charging terminal; a power module group allocating module, configured to determine a target power module group to be allocated to the target terminal from the idle power module groups according to the power demand of the target terminal and its corresponding power supply priority; The switch unit control module is used to connect the target terminal with the target power module group by controlling the switch units in the charging device to provide the target terminal with the required electric energy.

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