CN115224753B

CN115224753B - Power distribution device, charging device, equipment, control method and device

Info

Publication number: CN115224753B
Application number: CN202110924306.6A
Authority: CN
Inventors: 陈小川; 杜云鹏; 孙杰; 陈忠强; 茹永刚; 王建文; 栗文涛
Original assignee: Xi'an Telai Intelligent Charging Technology Co ltd
Current assignee: Xi'an Telai Intelligent Charging Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2023-03-10
Anticipated expiration: 2041-08-12
Also published as: CN115224753A; WO2023015845A1

Abstract

The invention discloses a power distribution device, a charging device, equipment, a control method and a device, comprising a plurality of current input ends; first switch group, first circuit, second switch group and current output end, first switch group include at least one first switch unit, and the second switch group includes a plurality of second switch units, and exists two sets ofly connect one between the second switch unit current input end connects a current input end on the first switch group, is provided with one on at least one second circuit the second switch group. Under the connection structure of this application, when current output end is connected with the rifle that charges, current input end is connected with the power unit that charges, when calling all power units that charge, stride across a power unit that charges at most to reduced the quantity of the switch unit that starts as far as, simplified control logic, and then reduced the programming volume, reduced the programming degree of difficulty, improved programming efficiency, call more nimble.

Description

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

Technical Field

The present invention relates to the field of charging control, and in particular, to a power distribution apparatus, a charging apparatus, a device, a control method, and a device.

Background

Charging stations for electric vehicles are generally provided with a plurality of charging power units for converting ac power input from a power grid into dc power, and are used as charging power sources for electric vehicles. Currently, a common charging topology is shown in fig. 1 (mentioned in patent CN 202010337478.9), fig. 1 is a schematic diagram of a power distribution device in the prior art, and in fig. 1, the charging topology includes 6 charging power units (P1-P6), 15-pair dc contactors (K1-K15), and 6 charging guns (M1-M6, also called charging terminals), and its operating principle is as follows: and the charging power unit is distributed for the charging gun to use by controlling the opening condition of the direct current contactor.

However, the charging topology as shown in fig. 1 has the following problems: the charging power unit that need stride across when the rifle that charges calls the charging power unit is more, the contactor quantity that leads to starting is more, for example, when rifle M1 that charges uses, the charging power unit that rifle M1 can directly call only P1, through P1 and then the charging power unit that can directly call be P2, P4, P6, and charging power unit P3 and P5 all need rifle M1 that charges stride across two charging power units and just can call, will lead to rifle M1 that charges when calling the charging power unit like this, the contactor quantity that starts is more, thereby the software control logic that leads to the contactor is comparatively complicated, and then the programming volume that leads to the software is great, the programming degree of difficulty is higher, programming efficiency is lower.

Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a power distribution device, a charging device, equipment, a control method and a device, wherein when all charging power units are called, one charging power unit is crossed at most, so that the number of started switch units is reduced as much as possible, control logic is simplified, programming amount is reduced, programming difficulty is reduced, programming efficiency is improved, and calling is more flexible.

To solve the above technical problem, the present invention provides a power distribution apparatus, including:

a plurality of current input terminals;

a first switch group, including at least one first switch unit, connected to one of the current input terminals;

the number of the first switch groups is at least three, and the first circuit is a closed-loop circuit formed by connecting a plurality of groups of the first switch groups in series;

second lines, first terminals are arranged between the first switch groups which are connected adjacently, each first terminal is a first end of the second line, and a second end of each second line is connected with the current input end connected with the first switch group which is not adjacent to the first terminal;

the second switch group comprises a plurality of second switch units, one current input end is connected between two second switch units, and at least one second switch group is arranged on at least one second line;

and the current output end is connected with the current input end.

Preferably, the number of the first switch groups is three.

Preferably, there is a plurality of the second lines with a set of the second switch set disposed between the first and second ends.

Preferably, there are three of the second lines between the first and second ends of which there is a set of the second switch sets.

Preferably, there are two second switch units in the second switch group, and at least one current input terminal is connected between the two second switch units, and the two second switch units are connected between the first end and the second end of the second line.

Preferably, the first switch group includes one of the first switch units.

Preferably, the first switch group includes two first switch units, and a connection point between the two first switch units is connected to the current input terminal.

Preferably, each of the first terminals is connected to a current input terminal.

In order to solve the above technical problem, the present invention further provides a charging device, including the above power distribution device, further including:

a charging power unit connected with the current input terminal.

In order to solve the above technical problem, the present invention further provides a charging device, including the above charging apparatus, further including:

and the charging terminal is connected with the current output end.

Preferably, each second line is provided with a group of second switches;

the charging apparatus further includes:

a third switching unit through which the current input terminal other than the current input terminal at the first terminal is connected with the current output terminal.

Preferably, the method further comprises the following steps:

and a fourth switching unit through which a current input terminal other than the current input terminal connected to the first terminal is connected to the charging power unit.

In order to solve the above technical problem, the present invention further provides a charging control method, which is applied to the above charging device, and includes:

taking the charging power unit closest to the position of the charging terminal as the charging power unit corresponding to the charging terminal and having the highest priority;

taking the charging power unit on the second line connected with the charging power unit with the highest priority as the charging power unit with the second priority;

arranging the power supply priorities of the charging power units except the charging power unit with the highest priority and the second priority according to a preset sequence;

determining a charging power unit distributed to the target charging terminal from the idle charging power units according to the power requirement of the target charging terminal and the priority of the charging power units;

and controlling the action of each switch unit in the charging equipment so as to enable the determined charging power unit to be connected with the target charging terminal, so as to provide the required power for the target charging equipment.

Preferably, after controlling each switch unit in the charging device to connect the determined charging power unit with the target charging terminal to provide the target charging device with the required power, the method further includes:

judging whether the power requirement of the target charging terminal is reduced or not;

if so, controlling the switch units in the charging equipment to act so as to disconnect the charging power units connected with the target charging terminal from the target charging terminal according to the priority from low to high in sequence until the power output by all the charging power units connected with the target charging terminal meets the power requirement of the target charging terminal or until all the charging power units are disconnected.

judging whether the power demand of the target charging terminal is increased or not;

if so, controlling the idle charging power units to be sequentially connected with the target charging terminal from high to low according to the power requirement of the target charging terminal and the priority between the idle charging power units and the target terminal until the power output by all the charging power units connected with the target charging terminal meets the power requirement of the target charging terminal or until no idle charging power units exist.

judging whether the target charging terminal is charged or not or whether a charging stop instruction is received or not;

and if the target charging terminal finishes charging or receives the charging stop instruction, controlling all switch units in the charging equipment to act so as to disconnect all the charging function units from the target charging terminal.

In order to solve the above technical problem, the present invention further provides a charging control apparatus, including:

a memory for storing a computer program;

a processor for implementing the steps of the charging control method described above when executing the computer program.

The application provides a power distribution device, a charging device, equipment, a control method and a device, comprising a plurality of current input ends; first switch block, first circuit, second switch block and current output end, first switch block include N first switch unit, and second switch block includes a plurality of second switch unit, and exists two sets ofly connect one at least between the second switch unit current input end connects a current input end at least on the first switch block, is provided with at least one on at least one second circuit second switch block. Under the connection structure of this application, when current output end is connected with the rifle that charges, current input end is connected with the power unit that charges, when calling all power units that charge, stride across a power unit that charges at most to reduced the quantity of the switch unit that starts as far as, simplified control logic, and then reduced the programming volume, reduced the programming degree of difficulty, improved programming efficiency, call more nimble.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a power distribution apparatus of one of the prior art;

fig. 2 is a block diagram of a power distribution apparatus provided in the present invention;

fig. 3 is a schematic diagram of a first power distribution apparatus provided in the present invention;

fig. 4 is a schematic diagram of a second power distribution apparatus provided in the present invention;

FIG. 5 is a schematic diagram of a third power distribution apparatus provided in the present invention;

FIG. 6 is an electrical schematic diagram of a power distribution apparatus provided by the present invention;

FIG. 7 is a schematic diagram of a fourth power distribution apparatus provided in the present invention;

FIG. 8 is an electrical schematic of another power distribution apparatus provided by the present invention;

fig. 9 is a schematic diagram of a fifth power distribution apparatus provided in the present invention;

fig. 10 is a schematic diagram of a sixth power distribution apparatus provided in the present invention;

fig. 11 is a schematic flowchart of a charging control method according to the present invention;

fig. 12 is a block diagram of a charging control apparatus according to the present invention.

Detailed Description

The core of the invention is to provide a power distribution device, a charging device, equipment, a control method and a device, when all charging power units are called, one charging power unit is crossed at most, so that the number of started switch units is reduced as much as possible, control logic is simplified, programming amount is reduced, programming difficulty is reduced, programming efficiency is improved, and calling is more flexible.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 2, fig. 2 is a block diagram of a power distribution apparatus provided in the present invention, the apparatus includes:

a plurality of current input terminals A;

the first switch group Z1 comprises at least one first switch unit, and the first switch group Z1 is connected with a current input end A;

the number of the first switch groups Z1 is at least three, and the first circuit is a closed-loop circuit formed by connecting a plurality of groups of the first switch groups Z1 in series;

the first terminals B are arranged between the adjacent first switch groups Z1 of the second circuit, each first terminal B is a first end of the second circuit, and a second end of the second circuit is connected with a current input end A connected with the first switch group Z1 which is not adjacent to the first terminal B;

the second switch group Z2 comprises a plurality of second switch units, a current input end A is connected between two second switch units, and at least one second circuit is provided with one second switch group Z2;

and the current output end is connected with the current input end A.

In the prior art, when the charging gun calls the charging power unit, the number of the charging power units needing to be crossed when the charging power unit is called is large, so that the number of contactors used is large, and further the programming quantity of software is large, the programming difficulty is high, and the programming efficiency is low.

In order to solve the technical problem, the design idea problem of the application is as follows: a power distribution apparatus is designed so that the number of charging power cells that the charging gun needs to cross when calling up the charging power cells is minimized, thereby minimizing the number of contactors used.

Based on this, the power distribution device provided by the application comprises a current input end a, a first switch group Z1, a second switch group Z2 and a current output end, wherein the first switch group Z1 is sequentially connected in series to form a closed-loop circuit as a first circuit, a connection end between the first switch group Z1 is used as a first terminal B, the first terminal B is connected with a current output end connected with the first switch group Z1 which is not adjacent to the first terminal B and is used as a second circuit, at least one second switch group Z2 is arranged on at least one second circuit, the first switch group Z1 comprises at least one first switch unit, and the first switch group Z1 is connected with one current input end a. The second switch group Z2 includes two second switch units, and a current input terminal a is connected between the two second switch units.

When the first switch group Z1 includes one first switch unit, the number of switches used is small, so that the corresponding programming amount is small, and the programming amount is reduced. When the first switch group Z1 includes two first switch units, the connection point between the two first switch units is connected to the current input terminal a, and at this time, although the number of the corresponding first switch units increases, the reliability of the operation of the power distribution apparatus is improved to some extent.

The first switch unit and the second switch unit in this application may be, but not limited to, contactors, and may also be implemented in other switch implementations, and this application is not limited thereto.

It should be noted that, in the present application, the current input terminal a may be connected to a charging power unit, where the charging power unit is used to provide AC/DC power conversion, and the current output terminal is connected to a charging terminal for charging or communicating with a vehicle or other devices. The charging terminal may be, but is not limited to, a charging gun, and the current output terminal in the present application may not be particularly limited herein.

In summary, in the connection structure of the present application, when the current output end is connected to the charging gun and the current input end a is connected to the charging power unit, when all the charging power units are called, at most one charging power unit is crossed, so as to reduce the number of enabled switch units as much as possible, simplify the control logic, further reduce the programming amount, reduce the programming difficulty, and improve the programming efficiency.

On the basis of the above-described embodiment:

as a preferred embodiment, the number of the first switch groups Z1 is three; the first switch group Z1 includes one first switch unit; two second switch units are arranged in the second switch group Z2, at least one current input end A is connected between the two second switch units, and the two second switch units are connected between the first end and the second end of the second line. .

In this embodiment, specifically, when the number of the first switch group Z1 is three, the first switch group Z1 includes one first switch unit, and the second switch group Z2 includes two second switch units, please refer to fig. 3, fig. 4 and fig. 5, fig. 3 is a schematic diagram of a first power distribution apparatus provided by the present invention, fig. 4 is a schematic diagram of a second power distribution apparatus provided by the present invention, and fig. 5 is a schematic diagram of a third power distribution apparatus provided by the present invention.

Specifically, when the first switch group Z1 is three groups, the power distribution apparatus corresponding to the connection relationship provided in the present application should at least include three connection relationships as shown in fig. 3, fig. 4, and fig. 5, and the three connection relationships can reduce the number of switch units, thereby simplifying the control logic.

As a preferred embodiment, there is a plurality of second lines having a set of second switch groups Z2 disposed between the first and second ends thereof.

The present embodiment aims to provide a specific implementation manner of the first power distribution apparatus, and specifically refer to fig. 3, fig. 4 and fig. 5, wherein in fig. 3, only one second switch group Z2 is disposed between the first end and the second end of one second line, and in fig. 4, one second switch group Z2 is disposed between the first end and the second end of two second lines.

As a preferred embodiment, there are three second lines between the first and second ends of which a set of second switch groups Z2 is provided.

Specifically referring to fig. 5, that is, a group of second switch groups Z2 is respectively disposed between the first ends and the second ends of the three second lines.

At this time, referring to fig. 6, fig. 6 is an electrical schematic diagram of a power distribution apparatus provided in the present invention. Specifically, when each second line is provided with one second switch group Z2 and the second switch group Z2 includes two second switch units, the corresponding electrical schematic diagram is shown.

It should be noted that, when the switch groups in the present application are specifically limited to three groups, and each second line is provided with one second switch unit, that is, with respect to fig. 5, compared with the prior art (fig. 1), the specific design concept of the present application is: when the number of the used charging power units is the same as that in fig. 1, by adjusting the connection relationship between each charging module and each switch module, specifically, three charging power units are arranged on a second line in a closed-loop line (a first line), and a second switch unit is arranged for the three charging power units, so that the number of switches required to be actuated when each charging terminal calls the charging power units is reduced, and the calling of the charging power units is more flexible. For example, M3 may invoke R3 directly through K3, after crossing R3, R1 may be invoked through K9, R4 may be invoked through K9 and K11, R2 may be invoked through K8, R6 may be invoked through K10, and R5 may be invoked through K15. It can be seen that when one charging gun calls each charging power unit, at most one charging power unit is crossed, the number of the crossed charging power units is smaller than that in the prior art, and the number of the correspondingly called switch units is also smaller, so that corresponding programming is simpler when programming control is designed.

As a preferred embodiment, the first switch group Z1 includes two first switch units, and a connection point between the two first switch units is connected to the current input terminal a.

In consideration of the fact that the number of switching units and the cost of the power distribution apparatus are reduced to some extent when only one first switching unit is used, the present embodiment uses two first switching units in consideration of the reliability of the power distribution apparatus since the number of switching units is small and the reliability is relatively low. Specifically, referring to fig. 7 and 8, fig. 7 is a schematic diagram of a fourth power distribution device provided by the present invention, and fig. 8 is an electrical schematic diagram of another power distribution device provided by the present invention. The three first switch groups Z1 are K9 and K18, K7 and K16, and K8 and K17, respectively.

In a preferred embodiment, a current input a is connected to each first terminal B.

Referring to fig. 9, fig. 9 is a schematic diagram of a fifth power distribution apparatus provided by the present invention, wherein in this embodiment, a charging power unit, that is, R7 to R9 in fig. 9, is respectively connected to the first terminal B on the first line, and the number of the charging power units that can be called is large, so as to meet different requirements of various charging devices as much as possible.

On the basis of the above-mentioned embodiment of fig. 7, the design idea of this embodiment is to provide three charging power units more in the structure of fig. 7 in order to meet the requirements of a plurality of charging guns for different powers, and at this time, the selectivity of the number of charging power units that can be called by each corresponding charging terminal is more, and the requirements for different charging powers can be met.

However, compared with fig. 1 in the prior art, the design idea of the present embodiment is specifically as follows: in order to increase the charging power units that can be called by the power distribution device, several charging power units (R4-R6) can be connected in the structure of fig. 1 in the prior art, but when more charging power units are provided for the power distribution device, it needs to be considered which position in fig. 1 the charging power unit is arranged at, and at the same time, more charging power units are provided, the flexibility of calling of each charging power unit in the power distribution device can be improved.

Specifically, 6 charging power units of the outer ring, specifically, R1 to R3 and R7 to R9 are the same as those in fig. 1, on this basis, R4 to R6 are arranged on the second line, and a corresponding second switch unit is arranged for R4 to R6, where R4 to R6 and the corresponding second switch unit have the same beneficial effects as those of the above embodiment, and are used to improve the flexibility of the power distribution device to call each charging power unit, which is not described herein again.

In summary, the power distribution apparatus in this embodiment further improves the flexibility of the whole charging device calling on the basis of increasing the number of the charging power units that can be called.

A charging device, including the above power distribution device, further includes:

and the charging power unit is connected with the current input end A.

In order to solve the above technical problem, the present invention further provides a charging apparatus, which is described by taking the example that the number of the first switch groups Z1 is three, and one second switch group Z2 is disposed on each of the three second lines, as shown in fig. 9, R1 to R9 in the figure are nine charging power units for providing power to each charging gun according to the conducting state of the switch units.

For other descriptions of the charging device, please refer to the above embodiments, and the application is not limited thereto.

A charging device, comprising the above charging apparatus, further comprising:

and the charging terminal is connected with the current output end.

In order to solve the above technical problem, the present invention further provides a charging device, which is described by taking an example that the number of the first switch groups Z1 is three, and each of the three second lines is provided with one second switch group Z2, as shown in fig. 7, M1 to M6 in the figure are six charging terminals, specifically, may be charging guns, which are used for supplying power to the charging device when connected with the charging device. The charging terminal may communicate with the charging device when connected to the charging device.

As a preferred embodiment, each second line is provided with a group of second switches Z2;

the charging apparatus further includes:

and a third switching unit through which the current input terminal a other than the current input terminal a at the first terminal B passes and the current output terminal.

The present embodiment aims to provide a connection relationship between a current input terminal a and a current output terminal, and in particular, a third switching unit is disposed between the current input terminal a and the current output terminal, and whether to invoke a charging power unit connected to the current input terminal a is controlled by controlling on or off of a third control unit.

As a preferred embodiment, further comprising:

a fourth switching unit through which the current input terminals a other than the current input terminal a connected to the first terminal B are connected to the charging power unit.

In this embodiment, a connection relationship between the charging power unit and the current input terminal a is provided, and specifically, referring to fig. 10, fig. 10 is a schematic diagram of a sixth power distribution apparatus provided in the present invention. Wherein, a fourth switch unit is arranged between the current input end a outside the closed loop and the charging power unit, and as shown in fig. 10, K19, K20 and K21 are three fourth switch units respectively.

At this time, under the condition that three charging guns (namely current output ends) on the outer side call one charging power unit, the internal charging gun (current output end) can call modules on the periphery, and under the condition that three charging guns work independently, the internal charging guns can completely call the modules on the periphery, so that the flexibility of calling among the modules in the power distribution device is improved.

Referring to fig. 11, fig. 11 is a schematic flowchart of a charging control method according to the present invention, where the method is applied to the charging device, and includes:

s111: taking the charging power unit closest to the position of the charging terminal as the charging power unit with the highest priority corresponding to the charging terminal;

s112: taking the charging power unit on the second line connected with the charging power unit with the highest priority as the charging power unit with the second priority;

s113: arranging the power supply priorities of other charging power units except the charging power unit with the highest priority and the charging power unit with the second priority according to a preset sequence;

s114: determining a charging power unit distributed to the target charging terminal from the idle charging power units according to the power requirement of the target charging terminal and the priority of the charging power units;

s115: and controlling the action of each switch unit in the charging equipment so as to connect the determined charging power unit with the target charging terminal to provide the required power for the target charging equipment.

When the power distribution apparatus is configured in the above connection manner, the method for controlling each switching unit in the present application is: regarding the charging power unit closest to the charging terminal position as the highest priority charging power unit corresponding to the charging terminal, and regarding the charging power unit on the second line connected to the highest priority charging power unit as the second priority charging power unit, for example, in fig. 7:

for the charging terminal M1, the priority of R1 is the highest, and the priority of R6 is the second;

for the charging terminal M2, the priority of R2 is the highest, and the priority of R4 is the second;

for the charging terminal M3, the priority of R3 is the highest, and the priority of R5 is the second;

for the charging terminal M4, the priority of R4 is the highest, and the priority of R2 is the second;

for the charging terminal M5, the priority of R5 is the highest, and the priority of R3 is the second;

for the charge terminal M6, the priority R6 is the highest, and the priority R1 is the second.

When multiple charging terminals M need to be charged simultaneously, the charging power units R corresponding to the multiple charging terminals M with the highest priority level need to be deducted first, then the above calling strategy is still adopted, the priority scheduling sequence between the multiple charging terminals M is adjusted according to the demand scheduling mode set by the system, the corresponding called charging power units R are skipped, and in the non-called charging power units, the charging power unit with the highest priority level for the charging terminal is selected until the power requirement of the charging terminal is met or all the charging power units are called, wherein for each charging terminal, the calling priority arrangement is as shown in table 1:

table 1 first table of correspondence between each charging terminal and each charging power unit

When a charging terminal is used to call each charging module, the charging power units are called in sequence according to the corresponding priorities in accordance with the priority order in table 1, and the actions of the corresponding switch units are shown in the path combination in table 1. Specifically, taking the charging terminal M1 as an example, when M1 calls the charging power unit, R1 is called first, if R1 does not satisfy the power requirement of M1, R6 is called again, if it does not satisfy, R2, R3, R4, and R5 are called in sequence, and when each charging power unit is called, the sequence of actions of the corresponding switch unit is K1 (R1) -K13 (R6) -K7 (R2) -K9 (R3) -K10 (R4) -K11 (R5). The calling relationships and actions corresponding to the other charging terminals are similar to those of M1, and are not described herein again.

When a plurality of charging terminals are used simultaneously, at the moment, when the plurality of charging terminals all need to call the charging power units, the number of the charging power units needing to be distributed to the charging terminals is determined by utilizing the power requirements of the charging terminals according to the principle that the earlier the charging request time is and the higher the priority is, and then the charging power units are sequentially distributed to the charging terminals needing to be charged according to the sequence of the request sequences of the charging terminals. Please refer to table 2:

table 2 second correspondence table between each charging terminal and each charging power unit

Taking M1 in table 2 requiring 4 charging terminals and M2 requiring 2 charging terminals as an example, if the M2 request time is earlier, two charging power units with the highest priority corresponding to M2 are allocated to M2 (R2 and R4, and the corresponding switch unit acts as K2-K14), and the remaining four charging power units are allocated to M1 (the corresponding switch unit acts as K1-K13-K9-K15). The calling process of the charging power unit by the other charging terminals is similar to the above process, and is not described herein again.

In addition, please refer to table 3:

table 3 third correspondence table between each charging terminal and each charging power unit

Taking the example that M1 in table 3 needs 4 charging terminals, M2 needs 1 charging terminal, and M4 needs 1 charging terminal, in this case, if the request time of M2 and M4 is earlier, the highest priority charging power unit corresponding to M2 is allocated to M2 (R2, the corresponding switch unit action is K2), the highest priority charging power unit corresponding to M4 is allocated to M4 (R4, the corresponding switch unit action is K4), and the remaining four charging power units are allocated to M1 (the corresponding switch unit actions are K1-K13-K12-K15). The calling process of the charging power unit by the other charging terminals is similar to the above process, and is not described herein again.

To sum up, the principle that each charging terminal calls the charging power unit in the application is as follows: determining a charging power unit distributed to the target charging terminal from the idle charging power units according to the power requirement of the target charging terminal and the priority of the charging power units; and controlling the action of each switch unit in the charging equipment so as to enable the determined charging power unit to be connected with the target charging terminal, so as to provide the required power for the target charging equipment.

As a preferred embodiment, after controlling each switch unit in the charging device to connect the determined charging power unit with the target charging terminal to provide the target charging device with the required power, the method further includes:

if so, controlling the action of each switch unit in the charging equipment so as to disconnect the charging power units connected with the target charging terminal from the target charging terminal in sequence from low to high according to the priority until the power output by all the charging power units connected with the target charging terminal meets the power requirement of the target charging terminal or until all the charging power units are disconnected.

In the charging process of each target charging terminal, if the power requirement of the target charging terminal is reduced, each switch unit is controlled to act, so that the charging power unit with the lowest priority level, which corresponds to the target charging terminal, in the charging power units supplying power to the target charging terminal is not supplied with power to the target charging terminal until the power requirement provided by the charging power unit connected with the target charging terminal for the target charging terminal meets the reduced power requirement of the target charging terminal, or until all the charging power units connected with the target charging terminal are disconnected.

The method for controlling the actions of the switch units may be to determine the number of the charging power units which need to supply power to the target charging terminal according to the power requirement of the target charging terminal, then control the switch units corresponding to the charging power units which are connected with the target charging terminal and have the determined number and higher priority levels to be inactive, and control the switch units corresponding to the charging power units with the lower priority levels to be active, so that the charging power units with the lower priority levels are disconnected from the target charging terminal.

if so, controlling the idle charging power units to be sequentially connected with the target charging terminal from high to low according to the power requirement of the target charging terminal and the priority between the idle charging power units and the target terminal until the power output by all the charging power units connected with the target charging terminal meets the power requirement of the target charging terminal or until no idle charging power unit exists.

In the charging process of each target charging terminal, if the power requirement of the target charging terminal is increased, each switch unit is controlled to act, so that the charging power unit with the highest priority level corresponding to the target charging terminal in the idle charging power units supplies power to the target charging terminal until the power requirement provided by the charging power unit connected with the target charging terminal for the target charging terminal meets the increased power requirement of the target charging terminal, or until no idle charging power unit exists.

The method for controlling the actions of the switch units may be to determine the number of the charging power units which need to supply power to the target charging terminal according to the power requirement of the target charging terminal, and then control the actions of the idle switch units corresponding to the charging power units with higher priority corresponding to the target charging terminal, so that the charging power units with higher priority are connected with the target charging terminal.

and if the target charging terminal finishes charging or receives a charging stop instruction, controlling all switch units in the charging equipment to act so as to disconnect all the charging function units from the target charging terminal.

In the process that the target charging terminal charges a vehicle or other equipment, if a charging stop instruction is received or the target charging terminal is completely charged, the switch units corresponding to all charging power units connected with the target charging terminal are controlled to be switched off.

Of course, the charging current and/or the charging voltage in the charging line of the charging device, which is the target charging terminal, may also be detected, and when the charging current and/or the charging voltage is not within the preset range, all the charging power units connected to the target charging terminal are controlled to be disconnected, so as to ensure the safety and reliability of the power distribution apparatus.

Referring to fig. 12, fig. 12 is a block diagram of a charging control device according to the present invention, including:

a memory 121 for storing a computer program;

the processor 122 is configured to implement the steps of the charging control method when executing the computer program.

For the introduction of the charging control device, please refer to the above embodiments, and details are not repeated herein.

It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

It will be further appreciated by those of ordinary skill in the art that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended 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 apparatus, comprising:

a plurality of current input terminals;

a first switch group, wherein the first switch group comprises at least one first switch unit, and the first switch group is connected with one current input end;

the second switch group comprises a plurality of second switch units, one current input end is connected between two second switch units, and at least one second switch group is arranged on one second line;

and the current output end is connected with the current input end.

2. The power distribution apparatus of claim 1, wherein the first switch set is three in number.

3. The power distribution apparatus of claim 2, wherein there are a plurality of the second lines with a set of the second switch set disposed between the first and second ends.

4. The power distribution apparatus of claim 3, wherein there are three of the second lines between the first and second ends with a set of the second switch sets disposed therebetween.

5. The power distribution apparatus of any of claims 1-4, wherein there are two of the second switch units in the second switch group, with at least one of the current input terminals connected therebetween, and with both connected between the first and second ends of the second line.

6. The power distribution apparatus of claim 5, wherein the first switch group comprises one of the first switch units.

7. The power distribution apparatus of claim 5, wherein the first switch group includes two first switch units, and a connection point between the two first switch units is connected to the current input terminal.

8. The power distribution apparatus of claim 7 wherein a current input is connected to each of said first terminals.

9. A charging apparatus comprising the power distribution apparatus according to any one of claims 1 to 8, further comprising:

a charging power unit connected with the current input terminal.

10. A charging device, characterized by comprising the charging apparatus according to claim 9, and further comprising:

and the charging terminal is connected with the current output end.

11. The charging apparatus according to claim 10, wherein a set of said second switches is provided on each of said second lines;

the charging apparatus further includes:

12. The charging apparatus according to claim 10 or 11, further comprising:

and a fourth switching unit through which current input terminals other than the current input terminal connected to the first terminal are connected to the charging power unit.

13. A charging control method applied to the charging apparatus according to any one of claims 10 to 12, comprising:

taking the charging power unit closest to the position of the charging terminal as the charging power unit with the highest priority corresponding to the charging terminal;

determining a charging power unit distributed to a target charging terminal from the idle charging power units according to the power requirement of the target charging terminal and the priority of the charging power units;

and controlling the switch units in the charging equipment to act so as to connect the determined charging power unit with the target charging terminal, so as to provide required power for the target charging equipment.

14. The charge control method according to claim 13, wherein controlling each switching unit in the charging device to connect the determined charging power unit with the target charging terminal to supply the target charging device with the required power further comprises:

15. The charge control method according to claim 13, wherein controlling each switching unit in the charging device to connect the determined charging power unit with the target charging terminal to supply the target charging device with the required power further comprises:

16. The charge control method according to any one of claims 13 to 15, wherein after controlling each switching unit in the charging device to connect the determined charging power unit with the target charging terminal to supply the target charging device with the required power, further comprising:

and if the target charging terminal finishes charging or receives the charging stop instruction, controlling all switch units in the charging equipment to act so as to disconnect all the charging power units from the target charging terminal.

17. A charge control device, characterized by comprising:

a memory for storing a computer program;

a processor for implementing the steps of the charge control method according to any one of claims 13-16 when executing said computer program.