A power distribution apparatus, charging apparatus, device, control method, and system

Abstract

The application discloses a power distribution device, a charging device, equipment, a control method and a system. The second line of the application is connected between the first connection terminals of the adjacent first switch groups, and each second line intersects at the second connection terminal. Due to the structure, when the power distribution device is actually applied to charging (the current input end is connected to the charging power unit, and the current output end is connected to the charging terminal), the number of charging power units that can be directly called by each charging terminal is increased, thereby the number of enabled switches is relatively reduced, the switch control logic is simplified, and the programming amount is reduced, the programming difficulty is reduced, and the programming efficiency is improved.

Description

Technical Field

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

[0002] Electric vehicle charging stations typically include multiple charging power units that convert AC power from the grid into DC power, and a charging topology for distributing the charging power to the charging guns. Currently, commonly used charging topologies include... Figure 1 As shown (mentioned in patent CN202010337478.9), Figure 1 In this system, the charging topology includes 6 charging power units (P1-P6), 15 pairs of DC contactors (K1-K15), and 6 charging guns (M1-M6, also known as charging terminals). Its working principle is to allocate charging power units to the charging guns by controlling the opening and closing of the DC contactors.

[0003] However, as Figure 1 The charging topology shown has the following problems: the charging gun can directly call a limited number of charging power units, resulting in a large number of contactors being activated. For example, when the charging gun M1 is in use, it can only directly call charging power units P1, P2, P4, and P6. However, charging power units P3 and P5 require the charging gun M1 to bypass one charging power unit before they can be called. This results in a large number of contactors being activated when the charging gun M1 calls charging power units, which in turn leads to more complex software control logic for the contactors, resulting in a larger amount of software programming, higher programming difficulty, and lower programming efficiency.

[0004] Therefore, how to provide a solution to the above-mentioned technical problems is a problem that those skilled in the art need to solve at present. Summary of the Invention

[0005] The purpose of this invention is to provide a power distribution device, a charging device, an equipment, a control method, and a system. When the power distribution device is actually applied to charging (the current input terminal is connected to the charging power unit, and the current output terminal is connected to the charging terminal), the number of charging power units that each charging terminal can directly call is increased, thereby correspondingly reducing the number of activated switches, simplifying the switch control logic, and thus reducing the amount of programming, lowering the programming difficulty, and improving programming efficiency.

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

[0007] Multiple current input terminals;

[0008] The first switch group includes multiple sets of first switch units, with two sets of first switch units, and at least one current input terminal is connected between the two sets of first switch units.

[0009] The first circuit has at least three sets of first switch groups, and multiple sets of first switch groups are connected in sequence to form a closed loop of the first circuit.

[0010] The second line has a first terminal between adjacent connected first switch groups, each first terminal is connected to the second line, and multiple second lines intersect at the second terminal, and the second terminal is not connected to the first line;

[0011] The second switch group includes multiple sets of second switch units, with two sets of second switch units connected to at least one of the current input terminals, and at least one second line on which at least one set of the second switch group is provided.

[0012] A current output terminal is connected to the current input terminal.

[0013] Preferably, the number of the first switch groups is three.

[0014] Preferably, there are multiple second lines, on which at least one set of second switches is provided.

[0015] Preferably, there are three second lines, on which at least one set of second switches is provided.

[0016] Preferably, the second switch group has two sets of second switch units, with at least one current input terminal connected between them, and the two are connected between the first terminal and the second terminal.

[0017] Preferably, each of the second lines is formed by connecting a corresponding first terminal and a second terminal.

[0018] Preferably, among the plurality of second lines, at least one second line consists of two lines, the first line being formed by connecting a corresponding first terminal and a second terminal, and the second line extending from the first line along the first terminal.

[0019] Preferably, at least one current input terminal is connected to the second segment of the line, and at least one set of the second switching units is provided between the current input terminal and the first terminal.

[0020] Preferably, among the plurality of second lines, at least one second line consists of three lines: the first line is formed by connecting the corresponding first terminal and the second terminal; the second line extends from the first line along the first terminal; and the third line extends from the first line along the second terminal.

[0021] Preferably, at least one current input terminal is connected to the second segment of the line, and at least one set of second switching units is provided between the current input terminal and the first terminal; at least one current input terminal is connected to the third segment of the line, and at least one set of second switching units is provided between the current input terminal and the second terminal.

[0022] To address the aforementioned technical problems, the present invention also provides a charging device, comprising any of the aforementioned power distribution devices, and further comprising:

[0023] A charging power unit is connected to the current input terminal.

[0024] To address the aforementioned technical problems, the present invention also provides a charging device, including the aforementioned charging apparatus, and further comprising:

[0025] A charging terminal is connected to the current output terminal; wherein all charging power units connected to the current input terminal of the same switch group form the same power module group.

[0026] Preferably, the charging device further includes:

[0027] The third switching unit connects the current input terminal to the current output terminal.

[0028] To solve the above-mentioned technical problems, the present invention also provides a control method, applied to any of the above-mentioned charging devices, comprising:

[0029] The power module group that is closest to the target terminal in terms of connection location is designated as the power module group with the highest power supply priority corresponding to the target terminal; wherein, the target terminal is any charging terminal;

[0030] The power module group with the highest power supply priority that is structurally opposite to the power module group is taken as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the power supply priority of the remaining power module groups is arranged according to a preset order;

[0031] Based on the power requirements of the target terminal and its corresponding power supply priority, a target power module group is determined from the idle power module group and allocated to the target terminal.

[0032] By controlling each switching unit within the charging device, the target terminal is connected to the target power module group to provide the target terminal with the required electrical energy.

[0033] Preferably, the process of determining the target power module group to be allocated to the target terminal from the idle power module group according to the power requirements of the target terminal and its corresponding power supply priority includes:

[0034] Based on the power requirements of the target terminal and the total number of idle power module groups, the number of power module groups allocated to the target terminal is determined; wherein, different power module groups contain the same number of charging power units;

[0035] Based on the power supply priority corresponding to the target terminal and the number of power module groups to be allocated, the target power module group to be allocated to the target terminal is determined from the idle power module groups.

[0036] Preferably, the process of determining the number of power module groups allocated to the target terminal based on the power requirements of the target terminal and the total number of idle power module groups includes:

[0037] The charging priority of each charging terminal is determined according to a preset charging priority setting strategy;

[0038] Under preset constraints, the number of power module groups allocated to each charging terminal is determined according to the power requirements of each charging terminal and the total number of idle power module groups. The preset constraints include prioritizing the power requirements of charging terminals with higher charging priority and allocating at least one power module group to each charging terminal with power requirements.

[0039] Preferably, the process of determining the target power module group to be allocated to the target terminal from the idle power module groups according to the power supply priority and the number of power module groups corresponding to the target terminal includes:

[0040] The power module group with the highest power supply priority corresponding to each of the charging terminals with power demand shall be allocated to each of the charging terminals in a priority manner.

[0041] Based on the power module group with the highest power supply priority already allocated, and in descending order of charging priority, the remaining idle power module groups are allocated to each charging terminal with power demand according to the power supply priority and the number of power module groups corresponding to each charging terminal with power demand.

[0042] To solve the above-mentioned technical problems, the present invention also provides a control system, applied to any of the above-mentioned charging devices, comprising:

[0043] The power supply priority setting module is used to designate the power module group that is closest to the target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal, and designate the power module group that is structurally opposite the power module group with the highest power supply priority as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the target terminal is any charging terminal; the power supply priority of the remaining power module groups is arranged according to a preset order;

[0044] The power module group allocation module is used to determine the target power module group to be allocated to the target terminal from the idle power module groups according to the power requirements of the target terminal and its corresponding power supply priority;

[0045] The switching unit control module is used to connect the target terminal to the target power module group by controlling each switching unit in the charging device, so as to provide the target terminal with the required electrical energy.

[0046] This invention provides a power distribution device, comprising: multiple current input terminals; a first switch group, the first switch group including multiple sets of first switch units, of which two sets of first switch units are connected to at least one current input terminal; a first line, the number of first switch groups being at least three, the multiple sets of first switch groups being sequentially connected to form a closed loop first line; a second line, adjacent connected first switch groups each having a first terminal, each first terminal being connected to a second line, the multiple second lines intersecting at the second terminal, the second terminal not being connected to the first line; a second switch group, the second switch group including multiple sets of second switch units, of which two sets of second switch units are connected to at least one current input terminal, and at least one second line having at least one set of second switch groups disposed thereon; and a current output terminal connected to the current input terminals. As can be seen, the second line of this application is connected to the first terminal of the adjacent first switch group, and each second line intersects at the second terminal. It is precisely because of this structural arrangement that when the power distribution device is actually applied to charging (the current input terminal is connected to the charging power unit, and the current output terminal is connected to the charging terminal), the number of charging power units that each charging terminal can directly call is increased, thereby correspondingly reducing the number of activated switches, simplifying the switch control logic, and thus reducing the amount of programming, lowering the programming difficulty, and improving programming efficiency.

[0047] The present invention also provides a charging device, equipment, control method and system, which have the same beneficial effects as the power distribution device described above. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of a charging topology in the prior art.

[0050] Figure 2 This is a schematic diagram of the structure of the first power distribution device provided in an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the structure of the second power distribution device provided in an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of the structure of the third power distribution device provided in an embodiment of the present invention;

[0053] Figure 5 This is a schematic diagram of the structure of the fourth power distribution device provided in the embodiments of the present invention;

[0054] Figure 6 This is a schematic diagram of the structure of a first charging device provided in an embodiment of the present invention;

[0055] Figure 7 This is an electrical connection schematic diagram of a first type of charging device provided in an embodiment of the present invention;

[0056] Figure 8 This is a schematic diagram of the structure of a second charging device provided in an embodiment of the present invention;

[0057] Figure 9 This is an electrical connection diagram of a second type of charging device provided in an embodiment of the present invention;

[0058] Figure 10 A flowchart of a control method provided in an embodiment of the present invention;

[0059] Figure 11 A schematic diagram of the structure of a control system provided in an embodiment of the present invention;

[0060] Figure 12 This is a schematic diagram of a charging system provided in an embodiment of the present invention. Detailed Implementation

[0061] The core of this invention is to provide a power distribution device, a charging device, an equipment, a control method, and a system. When the power distribution device is actually applied to charging (the current input terminal is connected to the charging power unit, and the current output terminal is connected to the charging terminal), the number of charging power units that each charging terminal can directly call is increased, thereby correspondingly reducing the number of activated switches, simplifying the switch control logic, and thus reducing the amount of programming, lowering the programming difficulty, and improving programming efficiency.

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a first power distribution device provided in an embodiment of the present invention.

[0064] This application provides a power distribution device, including:

[0065] Multiple current input terminals A;

[0066] The first switch group Z1 includes multiple first switch units U1, with two sets of first switch units U1 connected to at least one current input terminal A between them.

[0067] The first circuit has at least three sets of first switch groups Z1, and multiple sets of first switch groups Z1 are connected in sequence to form a closed loop first circuit.

[0068] The second line has a first terminal B between adjacent first switch groups Z1. Each first terminal B is connected to a second line. Multiple second lines intersect at a second terminal C. The second terminal C is not connected to the first line.

[0069] The second switch group Z2 includes multiple sets of second switch units U2, with two sets of second switch units U2 connected to at least one current input terminal A, and at least one second line with at least one set of second switch group Z2 on it.

[0070] The current output terminal is connected to the current input terminal A.

[0071] Specifically, the power distribution device includes multiple current input terminals A and current output terminals; wherein, the current output terminals are connected to the current input terminals A, the current input terminals A are used to connect to the charging power unit, and the current output terminals are used to connect to the charging terminal.

[0072] The power distribution device also includes a first switch group Z1 and a second switch group Z2; wherein, the first switch group Z1 includes multiple sets of first switch units U1, and there are two sets of first switch units U1 in the first switch group Z1, with at least one current input terminal A connected between them; the second switch group Z2 includes multiple sets of second switch units U2, and there are two sets of second switch units U2 in the second switch group Z2, with at least one current input terminal A connected between them.

[0073] The number of first switch groups Z1 is at least three, and multiple first switch groups Z1 are connected in sequence to form a closed loop first circuit. Each adjacent first switch group Z1 has a first terminal B, and each first terminal B is connected to a second circuit. Multiple second circuits intersect at a second terminal C, and among the multiple second circuits, there is at least one second circuit on which at least one second switch group Z2 is installed.

[0074] It should be noted that the second terminal C is not connected to the first line; that is, the second terminal C is located outside the first line, excluding the scenario where the second terminal C is directly placed on the first line. Furthermore, "the second terminal C is not connected to the first line" means it is not directly connected to the first line. Figure 2 As shown, the second terminal C is indirectly connected to the first line through the second line and the second switch group Z2, which falls under the category of "the second terminal C is not connected to the first line" in this application.

[0075] As can be seen, the second line of this application is connected to the first terminal of the adjacent first switch group, and each second line intersects at the second terminal. It is precisely because of this structural arrangement that when the power distribution device is actually applied to charging (the current input terminal is connected to the charging power unit, and the current output terminal is connected to the charging terminal), the number of charging power units that each charging terminal can directly call is increased, thereby correspondingly reducing the number of activated switches, simplifying the switch control logic, and thus reducing the amount of programming, lowering the programming difficulty, and improving programming efficiency.

[0076] Based on the above embodiments:

[0077] As an optional embodiment, the number of the first switch group Z1 is three.

[0078] Specifically, the number of the first switch group Z1 in this application is three. Of course, the number of the first switch group Z1 in this application may also be more than three. This application does not make any special limitation here.

[0079] As an optional embodiment, there are multiple second lines, on which at least one set of second switch groups Z2 are provided.

[0080] Specifically, when the number of first switch groups Z1 in this application is three, the number of second lines is three. Of the three second lines, only one second line may exist, on which at least one second switch group Z2 is installed, such as... Figure 3 As shown; there may also be multiple second lines, each equipped with at least one set of second switch groups Z2 (preferably).

[0081] As an optional embodiment, there are three second lines, on which at least one set of second switch groups Z2 are provided.

[0082] Specifically, when the number of second lines in this application is three, the situation where there are multiple second lines with at least one set of second switch groups Z2 is divided into two types: 1) Among the three second lines, only two second lines exist, with at least one set of second switch groups Z2 installed on them, such as... Figure 4 As shown; 2) Among the three second lines, there are three second lines, on which at least one set of second switch group Z2 (preferably) is installed, such as Figure 2 As shown.

[0083] As an optional embodiment, the second switch group Z2 has two sets of second switch units U2, with at least one current input terminal A connected between them, and the two are connected between the first terminal B and the second terminal C.

[0084] Specifically, the second switch group Z2 of this application includes multiple sets of second switch units U2. In the second switch group Z2, there are two sets of second switch units U2, which are connected to at least one current input terminal A and are connected between the first terminal B and the second terminal C.

[0085] As an optional embodiment, each second line is formed by connecting a corresponding first terminal B and a second terminal C.

[0086] Specifically, such as Figures 2-4 As shown, each second line in this application is formed by connecting a corresponding first terminal B and a second terminal C, that is, one terminal of each second line is the corresponding first terminal B, and the other terminal is the second terminal C.

[0087] As an optional embodiment, among the plurality of second lines, at least one second line consists of two lines, the first line being formed by connecting the corresponding first terminal B and the second terminal C, and the second line extending from the first line along the first terminal B.

[0088] Specifically, such as Figure 5 As shown, among the three second lines, there are only two second lines, which consist of two lines. The first line is formed by connecting the corresponding first terminal B and the second terminal C, and the second line is an extension of the first line along the first terminal B.

[0089] It should be noted that in this embodiment, "extension" means "extending from the first line segment along the first terminal", and the direction of extension is not limited, as long as it does not intersect with other lines.

[0090] As an optional embodiment, among the multiple second lines, there is at least one second line consisting of two lines, on which at least one current input terminal A is connected, and at least one set of second switching units U2 is provided between the current input terminal A and the first terminal B.

[0091] Specifically, such as Figure 5 As shown, among the three second lines, only two second lines exist, each consisting of two segments. At least one current input terminal A (for connecting to the charging power unit) is connected to the second segment, and at least one set of second switching units U2 is provided between this current input terminal A and the first terminal B.

[0092] As an optional embodiment, among the plurality of second lines, at least one second line consists of three segments: the first segment is formed by connecting the corresponding first terminal B and the second terminal C; the second segment extends from the first segment along the first terminal B; and the third segment extends from the first segment along the second terminal C.

[0093] Specifically, such as Figure 5 As shown, among the three second lines, there is only one second line, which consists of three segments. The first segment is formed by connecting the corresponding first terminal B and the second terminal C. The second segment extends from the first segment along the first terminal B. The third segment extends from the first segment along the second terminal C.

[0094] It should be noted that the "extension" in this embodiment does not limit the direction of extension, as long as it does not intersect with other lines.

[0095] As an optional embodiment, at least one current input terminal A is connected to the second segment of the line, and at least one set of second switching units U2 is provided between the current input terminal A and the first terminal B; on the third segment of the line, at least one current input terminal A is connected, and at least one set of second switching units U2 is provided between the current input terminal A and the second terminal C. Specifically, as... Figure 5As shown, only one of the three second lines exists, consisting of three segments. At least one current input terminal A (for connecting the charging power unit) is connected to the second segment, and at least one set of second switching units U2 is provided between this current input terminal A and the first terminal B. Similarly, at least one current input terminal A (for connecting the charging power unit) is connected to the third segment, and at least one set of second switching units U2 is provided between this current input terminal A and the second terminal C.

[0096] This application also provides a charging device, including any of the power distribution devices described above, and further comprising:

[0097] The charging power unit is connected to the current input terminal A.

[0098] Specifically, the charging device of this application includes a power distribution device and a charging power unit, wherein the charging power unit is connected to a current input terminal A within the power distribution device. More specifically, in the power distribution device, each current input terminal A can be connected to one charging power unit. Of course, each current input terminal A can also be connected to multiple charging power units or not connected to any charging power unit; this application does not make any particular limitation here.

[0099] For a description of the power distribution device within the charging device provided in this application, please refer to the embodiments of the power distribution device described above; further details will not be repeated here.

[0100] This application also provides a charging device, including the above-mentioned charging apparatus, and further comprising:

[0101] The charging terminal is connected to the current output terminal; among them, all charging power units connected to the current input terminal A of the same switch group form the same power module group.

[0102] Specifically, the charging device of this application includes a charging unit 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 particular limitation herein.

[0103] It should be noted that all charging power units connected to the current input terminal A of the same switch group form the same power module group. For example, in the first switch group Z1, there are two sets of first switch units U1, and at least one current input terminal A is connected between them. All charging power units connected to these current input terminals A form the same power module group; in the second switch group Z2, there are two sets of second switch units U2, and at least one current input terminal A is connected between them. All charging power units connected to these current input terminals A form the same power module group.

[0104] As an optional embodiment, the charging device further includes:

[0105] The third switching unit U3 connects the current input terminal A to the current output terminal.

[0106] Furthermore, the charging device of this application also includes a third switching unit U3, and the current input terminal A is connected to the current output terminal through at least one third switching unit U3.

[0107] Specifically, as described in the above embodiments, the following can be obtained: Figure 6 The charging device shown, Figure 7 For example Figure 6 The diagram shows the electrical connection schematic of the charging device. The charging device includes 6 charging terminals (represented by "G"), 6 power module groups (represented by "R"), and 18 switching units (represented by "K"). It should be noted that each switching unit group contains two switching units, which are separated by + and -. For example, in the first switching unit group K1, one switching unit is represented by K1+, and the other by K1- (other switching units are represented similarly, and will not be elaborated further here).

[0108] Based on such Figure 6 The charging equipment shown can directly access 5 power module groups per charging terminal. For example, when charging terminal G1 is in use, the power module groups that charging terminal G1 can directly access are R1, R2, R3, R4, and R5. Compared to... Figure 1 The same 6-gun charging topology is shown, as follows: Figure 6 The number of charging power units that each charging terminal in the charging device shown can directly call has increased, thereby correspondingly reducing the number of activated switches, simplifying the switch control logic, and thus reducing the amount of programming, lowering the programming difficulty, and improving programming efficiency.

[0109] Moreover, such as Figure 1 The charging topology shown still has the problem that charging power units cannot be called under certain operating conditions. For example, when charging gun M1 is idle and charging guns M2-M6 are in use, charging power unit P1 cannot be called by charging guns M3 and M5; when charging guns M1 and M5 are idle and charging guns M2, M3, M4, and M6 are in use, charging power units P1 and P5 cannot be called by charging gun M3; when charging guns M2 and M5 are idle and charging guns M1, M3, M4, and M6 are in use, charging power unit P2 cannot be called by charging guns M4 and M6, and charging power unit P5 cannot be called by charging guns M1 and M3, which is not conducive to improving the idle situation of charging power units. The power distribution device of this application improves the charging topology and significantly improves the idle situation of charging power units, such as Figure 6As shown, when charging terminal G5 is idle and charging terminals G1, G2, G3, G4, and G6 are in use, power module group R5 cannot be called by charging terminal G3.

[0110] Furthermore, as described in the above embodiments, the following can also be obtained: Figure 8 The charging device shown, Figure 9 For example Figure 8 The diagram shows the electrical connection schematic of the charging equipment. The charging equipment includes 4 charging terminals (represented by "M"), 10 power module groups (represented by "P"), and 20 switching units (represented by "K").

[0111] For a description of the charging device within the charging equipment provided in this application, please refer to the embodiments of the charging device described above; further details will not be repeated here.

[0112] Please refer to Figure 10 , Figure 10 A flowchart of a control method provided in an embodiment of the present invention.

[0113] This control method is applicable to any of the above-mentioned charging devices (the following embodiments are all described as follows). Figure 6 (Taking the charging device shown as an example), it includes:

[0114] Step S1: The power module group that is closest to the target terminal in terms of connection location is taken as the power module group with the highest power supply priority corresponding to the target terminal, and the power module group that is structurally opposite to the power module group with the highest power supply priority is taken as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the power supply priority of the remaining power module groups is arranged according to a preset order.

[0115] Specifically, this application sets the power supply priority for each power module group for each charging terminal, that is, sets the power supply order for 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 supply power to the target terminal first. For example, this application can designate the power module group closest to the target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal, and designate the power module group that is structurally opposite to this power module group as the power module group with the lowest power supply priority corresponding to the target terminal. The power supply priority of the remaining power module groups is arranged according to a preset order.

[0116] More specifically, this application can number the first power module group connected to the first switch group in a counter-clockwise direction according to its connection position in the closed loop, and number the second power module group connected to the second switch group in a counter-clockwise direction according to the position of its corresponding first connection point in the closed loop; wherein, the number of the second power module group is greater than the number of the first power module group; and the second power module group that is structurally opposite to the first power module group with the smallest number has the largest number. Therefore, for the target terminal, apart from the power module groups with the highest and lowest 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).

[0117] like Figure 6 As shown, the power module groups connected to the first switch group are R1, R2, and R3. They are numbered counter-clockwise according to their connection positions in the closed-loop circuit: R1 is numbered 1, R2 is numbered 2, and R3 is numbered 3. The power module groups connected to the second switch group are R4, R5, and R6. They are also numbered counter-clockwise according to the position of their corresponding first connection points in the closed-loop circuit: R4 is numbered 4, R5 is numbered 5, and R6 is numbered 6. The power module group closest to charging terminal G1 at its connection position is R1; the closest to charging terminal G2 is R2; the closest to charging terminal G3 is R3; the closest to charging terminal G4 is R4; the closest to charging terminal G5 is R5; and the closest to charging terminal G6 is R6. The power module group that is structurally opposite to power module group R1 is R6; the power module group that is structurally opposite to power module group R2 is R4; and the power module group that is structurally opposite to power module group R3 is R5.

[0118] Power module group R1 is the highest priority power module group corresponding to charging terminal G1, power module group R6 is the lowest priority power module group corresponding to charging terminal G1, and the remaining power module groups have the following power priorities from highest to lowest: R2, R3, R4, R5. Power module group R2 is the highest priority power module group corresponding to charging terminal G2, power module group R4 is the lowest priority power module group corresponding to charging terminal G2, and the remaining power module groups have the following power priorities from highest to lowest: R1, R3, R5, R6. Power module group R3 is the highest priority power module group corresponding to charging terminal G3, power module group R5 is the lowest priority power module group corresponding to charging terminal G3, and the remaining power module groups have the following power priorities from highest to lowest: R1, R2, R4, R6. Power module group R4 is the highest priority power module group corresponding to charging terminal G4. Power module group R2 is the lowest priority power module group corresponding to charging terminal G4. The power supply priorities of the remaining power module groups, from highest to lowest, are: R1, R3, R5, R6. Power module group R5 is the highest priority power module group corresponding to charging terminal G5. Power module group R3 is the lowest priority power module group corresponding to charging terminal G5. The power supply priorities of the remaining power module groups, from highest to lowest, are: R1, R2, R4, R6. Power module group R6 is the highest priority power module group corresponding to charging terminal G6. Power module group R1 is the lowest priority power module group corresponding to charging terminal G6. The power supply priorities of the remaining power module groups, from highest to lowest, are: R2, R3, R4, R5. See Table 1 below for details.

[0119] Table 1

[0120]

[0121] Step S2: Based on the power requirements of the target terminal and its corresponding power supply priority, determine the target power module group to be allocated to the target terminal from the idle power module group.

[0122] Specifically, this application can determine the target power module group to be allocated to the target terminal from the idle power module group based on the power requirements of the target terminal and the power supply priority corresponding to the target terminal.

[0123] Step S3: By controlling each switching unit in the charging device, connect the target terminal to the target power module group to provide the target terminal with the required power.

[0124] Specifically, after determining the target power module group to be allocated to the target terminal, this application connects the target terminal to the target power module group by controlling each switching unit in the charging device, thereby providing the target terminal with the required electrical energy.

[0125] As an optional embodiment, the process of determining the target power module group to be allocated to the target terminal from the idle power module group according to the power requirements of the target terminal and its corresponding power supply priority includes:

[0126] The number of power module groups allocated to the target terminal is determined based on the power requirements of the target terminal and the total number of idle power module groups; among them, different power module groups contain the same number of charging power units.

[0127] Based on the power supply priority corresponding to the target terminal and the number of power module groups to be allocated, the target power module group to be allocated to the target terminal is determined from the idle power module groups.

[0128] Specifically, this application determines the number of power module groups allocated to the target terminal based on the target terminal's power requirements and the total number of idle power module groups. Specifically, different power module groups contain the same number of charging power units, so each power module group can provide the same power value. It can be understood that, given the power value that each power module group can provide, the number of power module groups allocated to the target terminal can be determined based on the target terminal's power requirements and the total number of idle power module groups (the allocation basis is to maximize the satisfaction of the target terminal's power requirements while ensuring that the number of power module groups allocated to the target terminal does not exceed the total number of idle power module groups).

[0129] Then, based on the number of power module groups corresponding to the target terminal, this application sequentially determines the target power module groups to be allocated to the target terminal from the idle power module groups in descending order of the power supply priority corresponding to the target terminal, so that the target terminal can use them.

[0130] As an optional embodiment, the process of determining the number of power module groups allocated to the target terminal based on the power requirements of the target terminal and the total number of idle power module groups includes:

[0131] The charging priority of each charging terminal is determined according to the preset charging priority setting strategy.

[0132] Under preset constraints, the number of power module groups allocated to each charging terminal is determined according to the power demand of each charging terminal and the total number of idle power module groups. The preset constraints include prioritizing the power demand of charging terminals with higher charging priority and allocating at least one power module group to each charging terminal with power demand.

[0133] Specifically, this application pre-sets a charging priority setting strategy, which can be: the charging terminal that connects to the device to be charged (electric vehicle) first has a higher charging priority, and the power demand of the charging terminal with the higher charging priority is met first; or it can be: the charging priority of each charging terminal is directly set, and once set, the charging priority of each charging terminal remains fixed.

[0134] Based on this, this application determines the charging priority of each charging terminal according to a preset charging priority setting strategy. Then, under the constraints of prioritizing the power demand of charging terminals with higher charging priority and allocating at least one power module group to charging terminals with power demand, the number of power module groups allocated to each charging terminal is determined according to the power demand of each charging terminal and the total number of idle power module groups.

[0135] As an optional embodiment, the process of determining the target power module group to be allocated to the target terminal from the idle power module groups according to the power supply priority and the number of power module groups corresponding to the target terminal includes:

[0136] The power module group with the highest power supply priority corresponding to each charging terminal with power demand will be allocated to each charging terminal in a priority manner.

[0137] Based on the power module group with the highest power supply priority already allocated, 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.

[0138] Specifically, this application prioritizes allocating the highest priority power module group corresponding to each charging terminal with power demand to each charging terminal. Then, based on the already allocated highest priority power module group, 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.

[0139] Taking charging terminals G1 and G2 as examples, charging terminal G1 has a higher charging priority than charging terminal G2. If charging terminals G1 and G2 have power requirements, the highest power module group R1 corresponding to charging terminal G1 will be allocated to charging terminal G1 first, and the highest power module group R2 corresponding to charging terminal G2 will be allocated to charging terminal G2. Then, based on the already allocated highest power module groups, according to the power supply priority and the number of power module groups corresponding to charging terminal G1, the remaining idle power module groups will be allocated to charging terminal G1 in descending order of charging priority (skipping the already allocated power module groups). Then, according to the power supply priority and the number of power module groups corresponding to charging terminal G2, the remaining idle power module groups will be allocated to charging terminal G2 in descending order of charging priority (skipping the already allocated power module groups). The specific allocation scenarios are shown in Table 2 below.

[0140] Table 2

[0141]

[0142]

[0143] Furthermore, when the power demand of the target terminal decreases, this application can determine the number of power module groups that the target terminal needs to disconnect based on the reduced power demand of the target terminal, and then control each switching unit to prioritize disconnecting the connection between the target terminal and its corresponding power module group with lower power supply priority based on the number of power module groups that the target terminal needs to disconnect, thereby meeting the reduced power demand of the target terminal.

[0144] For example, taking charging terminal G1 as an example, if charging terminal G1 has power requirements, it is determined that charging terminal G1 is allocated 6 power module groups, as shown in the case of row G1 in Table 1 above. The 6 power module groups allocated to charging terminal G1 are R1, R2, R3, R4, R5, and R6. When the power requirements of charging terminal G1 decrease, the number of power module groups that charging terminal G1 needs to disconnect is determined based on the decrease in power requirements. Then, based on the number of power module groups that charging terminal G1 needs to disconnect, each switching unit is controlled to prioritize disconnecting the connection between charging terminal G1 and its corresponding lower-priority power module groups. For example, if the number of power module groups that charging terminal G1 needs to disconnect is 2, then each switching unit is controlled to prioritize disconnecting the connection between charging terminal G1 and power module groups R5 and R6.

[0145] Furthermore, when a power module group is released in the charging system, this application can determine whether there are any unoptimized terminals among the charging terminals that do not meet the power requirements. If such terminals exist, the charging priority of each unoptimized terminal is determined according to a preset charging priority setting strategy. Then, in descending order of charging priority, the released power module groups are allocated to each unoptimized terminal according to its corresponding power supply priority. Each switching unit is controlled to connect the newly allocated power module group to its corresponding unoptimized terminal until all unoptimized terminals meet their power requirements. After all charging terminals have finished charging, all switching units are disconnected, and the power module groups are released.

[0146] Please refer to Figure 11 , Figure 11 This is a schematic diagram of a control system provided in an embodiment of the present invention.

[0147] This control system is applied to any of the above-mentioned charging devices, including:

[0148] The power supply priority setting module 1 is used to select the power module group that is closest to the target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal, and select the power module group that is structurally opposite to the power module group with the highest power supply priority as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the target terminal is any charging terminal; the power supply priority of the remaining power module groups is arranged according to a preset order;

[0149] Power module group allocation module 2 is used to determine the target power module group to be allocated to the target terminal from the idle power module group according to the power demand of the target terminal and its corresponding power supply priority;

[0150] The switching unit control module 3 is used to connect the target terminal to the target power module group by controlling each switching unit in the charging equipment, so as to provide the target terminal with the required power.

[0151] For a description of the control system provided in this application, please refer to the embodiments of the control method described above; further details will not be repeated here.

[0152] Please refer to Figure 12 , Figure 12 This is a schematic diagram of a charging system provided in an embodiment of the present invention.

[0153] The charging system may include multiple power units 100 (referring to the aforementioned charging power units), multiple charging terminals 200, a power distribution device 300, and a control device 400. It may also include a centralized control device 500 that integrates functions such as charging control, order management, local billing, and uploading to a cloud platform. The control device 400 is used to implement the steps of any of the aforementioned control methods when executing its own stored computer program.

[0154] For a description of the power distribution device 300 in the charging system provided in this application, please refer to the embodiment of the power distribution device described above. For a description of the control device 400 in the charging system provided in this application, please refer to the embodiment of the control method described above. Further details will not be repeated here.

[0155] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0156] The above description of the disclosed embodiments enables those skilled in the art to make or use the 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded 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; The first switch group includes multiple sets of first switch units, with two sets of first switch units, and at least one current input terminal is connected between the two sets of first switch units. The first circuit has at least three sets of first switch groups, and multiple sets of first switch groups are connected in sequence to form a closed loop of the first circuit. The second line has a first terminal between adjacent connected first switch groups, each first terminal is connected to the second line, and multiple second lines intersect at the second terminal, and the second terminal is not connected to the first line; The second switch group includes multiple sets of second switch units, with two sets of second switch units connected to at least one of the current input terminals, and at least one second line on which at least one set of the second switch group is provided. A current output terminal is connected to the current input terminal.

2. The power distribution device as described in claim 1, characterized in that, The number of the first switch group is three.

3. The power distribution device as described in claim 2, characterized in that, There are multiple second lines, each equipped with at least one set of second switches.

4. The power distribution device as described in claim 3, characterized in that, There are three second lines, each equipped with at least one set of second switches.

5. The power distribution device according to any one of claims 1-4, characterized in that, The second switch group contains two sets of second switch units, with at least one current input terminal connected between them, and the two are connected between the first terminal and the second terminal.

6. The power distribution device as described in claim 5, characterized in that, Each of the second lines is formed by connecting the corresponding first terminal and the second terminal.

7. The power distribution device as described in claim 5, characterized in that, Among the multiple second lines, at least one second line consists of two segments, the first segment being formed by connecting a corresponding first terminal and a second terminal, and the second segment extending from the first segment along the first terminal.

8. The power distribution device as claimed in claim 7, characterized in that, At least one current input terminal is connected to the second segment of the line, and at least one set of the second switching units is provided between the current input terminal and the first terminal.

9. The power distribution device as described in claim 5, characterized in that, Among the multiple second lines, at least one second line consists of three segments: the first segment is formed by connecting the corresponding first terminal and the second terminal; the second segment extends from the first segment along the first terminal; and the third segment extends from the first segment along the second terminal.

10. The power distribution device as claimed in claim 9, characterized in that, On the second segment of the line, at least one current input terminal is connected, and at least one set of second switching units is provided between the current input terminal and the first terminal; on the third segment of the line, at least one current input terminal is connected, and at least one set of second switching units is provided between the current input terminal and the second terminal.

11. A charging device, characterized in that, Including the power distribution device as described in any one of claims 1-10, further comprising: A charging power unit is connected to the current input terminal.

12. A charging device, characterized in that, Including the charging device as described in claim 11, further comprising: A charging terminal is connected to the current output terminal; wherein all charging power units connected to the current input terminal of the same switch group form the same power module group.

13. The charging device as described in claim 12, characterized in that, The charging device also includes: The third switching unit connects the current input terminal to the current output terminal.

14. A control method, characterized in that, Applied to the charging device as described in claim 12 or 13, comprising: The power module group that is closest to the target terminal in terms of connection location is designated as the power module group with the highest power supply priority corresponding to the target terminal; wherein, the target terminal is any charging terminal; The power module group with the highest power supply priority that is structurally opposite to the power module group is taken as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the power supply priority of the remaining power module groups is arranged according to a preset order; Based on the power requirements of the target terminal and its corresponding power supply priority, a target power module group is determined from the idle power module group and allocated to the target terminal. By controlling each switching unit within the charging device, the target terminal is connected to the target power module group to provide the target terminal with the required electrical energy.

15. The control method as described in claim 14, characterized in that, The process of determining the target power module group to be allocated to the target terminal from the idle power module group according to the power requirements of the target terminal and its corresponding power supply priority includes: Based on the power requirements of the target terminal and the total number of idle power module groups, the number of power module groups allocated to the target terminal is determined; wherein, different power module groups contain the same number of charging power units; Based on the power supply priority corresponding to the target terminal and the number of power module groups to be allocated, the target power module group to be allocated to the target terminal is determined from the idle power module groups.

16. The control method as described in claim 15, characterized in that, The process of determining the number of power module groups allocated to the target terminal based on the target terminal's power requirements and the total number of idle power module groups includes: The charging priority of each charging terminal is determined according to a preset charging priority setting strategy; Under preset constraints, the number of power module groups allocated to each charging terminal is determined according to the power requirements of each charging terminal and the total number of idle power module groups. The preset constraints include prioritizing the power requirements of charging terminals with higher charging priority and allocating at least one power module group to each charging terminal with power requirements.

17. The control method as described in claim 16, characterized in that, The process of determining the target power module group to be allocated to the target terminal from the idle power module groups according to the power supply priority and the number of power module groups corresponding to the target terminal includes: The power module group with the highest power supply priority corresponding to each of the charging terminals with power demand shall be allocated to each of the charging terminals in a priority manner. Based on the power module group with the highest power supply priority already allocated, and in descending order of charging priority, the remaining idle power module groups are allocated to each charging terminal with power demand according to the power supply priority and the number of power module groups corresponding to each charging terminal with power demand.

18. A control system, characterized in that, Applied to the charging device as described in claim 12 or 13, comprising: The power supply priority setting module is used to designate the power module group that is closest to the target terminal in terms of connection location as the power module group with the highest power supply priority corresponding to the target terminal, and designate the power module group that is structurally opposite the power module group with the highest power supply priority as the power module group with the lowest power supply priority corresponding to the target terminal; wherein, the target terminal is any charging terminal; the power supply priority of the remaining power module groups is arranged according to a preset order; The power module group allocation module is used to determine the target power module group to be allocated to the target terminal from the idle power module groups according to the power requirements of the target terminal and its corresponding power supply priority; The switching unit control module is used to connect the target terminal to the target power module group by controlling each switching unit in the charging device, so as to provide the target terminal with the required electrical energy.

Images