CN115891707A

CN115891707A - Charging system, charging control method and charging pile

Info

Publication number: CN115891707A
Application number: CN202211507276.XA
Authority: CN
Inventors: 由浩; 范良勇; 安亚涛; 刘强; 卫建荣
Original assignee: Xian Linchr New Energy Technology Co Ltd
Current assignee: Xian Linchr New Energy Technology Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-04

Abstract

The application provides a charging system, a charging control method and a charging pile, wherein the charging system comprises a first power module, a second power module and a charging pile, wherein the first power module comprises a plurality of first power units which are sequentially and electrically connected through power switch modules respectively and form a totally-enclosed or semi-enclosed structure in a surrounding manner; and the second power module comprises a plurality of second power units which are respectively and sequentially electrically connected through the power switch module, and at least part of the second power units are respectively and electrically connected with at least one first power unit through the power switch module. This application is connected a plurality of first power units electricity in proper order and is enclosed into totally closed or semi-enclosed structure and form power output port, connects a plurality of second power units electricity in proper order, makes at least partial second power unit and at least one first power unit electricity be connected and form power output port to can satisfy charging system to the demand that the power module that charges increases, can reduce power switch quantity again, make whole charging system reduce the cost simultaneously, reduced the volume.

Description

Charging system, charging control method and charging pile

Technical Field

The application belongs to the technical field of new energy vehicle power supply, and particularly relates to a charging system, a charging control method and a charging pile.

Background

At present, the number of electric vehicles in the market is increasing, and further, the demand for rapid charging of a charging system (such as a charging pile) is also increasing. In order to improve the quick charging capability of the charging pile, a mode of increasing the number of charging power modules and power switches in a charging system is generally adopted.

However, as the number of the charging power modules and the power switches is increased, the cost of the whole charging system is increased, and the size of the charging system is increased, which is not favorable for the wide application of the future charging system.

Disclosure of Invention

The application aims to provide a charging system, a charging control method and a charging pile, and aims to solve the problems of high cost and large size of a traditional charging system.

In order to achieve the above object, in a first aspect, an embodiment of the present application provides a charging system, including a first power module, a second power module, a plurality of power switch modules, and a plurality of power output ports;

the first power module comprises a plurality of first power units which are respectively and electrically connected in sequence through the power switch module and enclose a fully-closed or semi-closed structure;

the second power module comprises a plurality of second power units, the number of the second power units is less than or equal to that of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module, and at least part of the second power units are respectively and electrically connected with at least one first power unit through the power switch module;

and part of the first power units and/or at least part of the second power units are electrically connected with the power output port through the power switch module respectively.

In another possible implementation manner of the first aspect, a plurality of the first power units are respectively and sequentially electrically connected through the power switch module, and enclose a fully-enclosed structure;

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch modules, and each second power unit is respectively and electrically connected with the two first power units through the power switch modules;

and part of the first power units and all the second power units are electrically connected with the power output port through the power switch module respectively.

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch module and enclose a totally-enclosed structure, and each second power unit is respectively and electrically connected with one first power unit through the power switch module;

and part of the first power units and part of the second power units are electrically connected with the power output port through the power switch module respectively.

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch modules, and each second power unit is respectively and electrically connected with the three first power units through the power switch modules;

the number of the second power units is smaller than that of the first power units, the second power units are respectively and electrically connected in sequence through the power switch module, and each second power unit is respectively and electrically connected with at least one first power unit through the power switch module;

and part of the first power units are electrically connected with the power output port through the power switch modules respectively.

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch module, and each second power unit is respectively and electrically connected with the two first power units through the power switch module;

In another possible implementation manner of the first aspect, a plurality of the first power units are respectively and sequentially electrically connected through the power switch module, and enclose a semi-closed structure;

the number of the second power units is equal to that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch modules and enclose a totally-enclosed structure, and part of the second power units are respectively and electrically connected with one first power unit through the power switch modules;

the number of the second power units is less than or equal to that of the first power units, the second power units are respectively and electrically connected in sequence through the power switch modules, and each second power unit is respectively and electrically connected with at least two first power units through the power switch modules;

In a second aspect, an embodiment of the present application provides a charging control method, including the following steps:

acquiring the target number of power units to be distributed at a power output port;

when the number of first-order power units closest to the power output port meets the target number, calling the power units of the first-order power units;

and when the number of the first-stage power units closest to the power output port does not meet the target number, increasing and calling the power units step by step according to the number of the power units away from the power output port until the power units meeting the target number are obtained or all the power units are called.

In a third aspect, an embodiment of the present application provides a charging control method, including the following steps:

acquiring a first number of power units which need to be distributed by a power output port;

determining a first alternative power unit combination according to the first number;

and determining the target power unit combination meeting the first number according to the state of the first candidate power unit combination.

In another possible implementation manner of the third aspect, the charging control method further includes:

and determining the number of the power units which can be distributed to each power output port according to the using state of the power output port and the number of all the power units.

In a fourth aspect, an embodiment of the present application provides a charging control method, including the following steps: acquiring the number of first ports of power output ports to be used and the second number of power units;

determining a second alternative power cell combination according to the first port number and the second number;

and determining the target power unit combination with the shortest serial path according to the state of the second alternative power unit combination.

In a fifth aspect, an embodiment of the present application provides a charging control method, including the following steps: acquiring the number of second ports of the currently occupied power output ports and the third number of power units corresponding to all the power output ports;

acquiring the number of third ports of the power output port occupied after adjustment, and determining a third alternative power unit combination according to the number of the third ports and the third number;

and determining a target power unit combination corresponding to the power output port occupied after adjustment according to the third alternative power unit combination and the use state of the power unit.

In another possible implementation manner of the fifth aspect, the determining, according to the third candidate power unit combination and the usage state of the power unit, a target power unit combination corresponding to the power output port occupied after adjustment includes:

determining the number of power units to be changed according to the third alternative power unit combination and the use state of the power units;

and determining a target power unit combination corresponding to the power output port occupied after adjustment according to the minimum value of the number of the power units to be changed.

In a sixth aspect, an embodiment of the present application provides a charging pile, which includes the charging system.

Compared with the prior art, the embodiment of the application has the beneficial effects that: according to the charging system, the plurality of first power units are sequentially and electrically connected to form a fully-closed or semi-closed structure and form the power output port, the plurality of second power units are sequentially and electrically connected, and at least part of the second power units are electrically connected with at least one first power unit and form the power output port, so that the requirement of the charging system on the increase of the charging power modules can be met, the number of power switches can be reduced, the cost of the whole charging system is reduced, and the size of the charging system is reduced.

Drawings

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

Fig. 1 is a schematic structural diagram of a conventional charging system;

fig. 2 is a schematic view of a first structure of a charging system according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a second charging system according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a third charging system according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a fourth structure of a charging system according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fifth charging system according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a sixth structure of a charging system according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating a seventh structure of a charging system according to an embodiment of the present disclosure;

fig. 9 is an eighth structural schematic diagram of a charging system according to an embodiment of the present application;

fig. 10 is a first flowchart of a charging control method according to an embodiment of the present application;

fig. 11 is a schematic diagram illustrating automatic allocation of a charging control method according to an embodiment of the present application;

fig. 12 is a second flowchart of a charging control method according to an embodiment of the present application;

fig. 13 is a third flowchart of a charging control method according to an embodiment of the present application;

fig. 14 is a fourth flowchart of a charging control method according to an embodiment of the present application.

Description of reference numerals:

100-first power module, 200-second power module, 300-power switch module, 400-power output port.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

At present, along with vehicle that charges constantly increases in quantity on the market, electric automobile fills electric pile in order to improve quick charge ability, constantly increases inside charging power module and power switch's quantity, leads to whole cost that fills electric pile constantly to improve, and the volume constantly increases.

Fig. 1 is a schematic structural diagram of a conventional charging system. As shown in fig. 1, for example, in a dc charging pile including 12 charging power modules and 6 charging guns, a conventional charging system generally requires 72 power switches, that is, the number of charging power modules is 12 times the number of charging guns is 6, and a total of 72 power switches are required. Although the charging system supports dynamic allocation of all charging power modules, the number of required power switches is large, so that the overall cost of the system is high, the volume of the system is large, and the later maintenance cost is increased continuously. In addition, as the power of a single charging power module is increased, the maximum current capacity that the power switch needs to accommodate is also continuously increased, so that the size of the power distribution single board is continuously increased, and the development trend of a future charging system cannot be met.

Therefore, the application provides a charging system, a plurality of first power units are sequentially and electrically connected to enclose a fully-closed or semi-closed structure and form a power output port, a plurality of second power units are sequentially and electrically connected, at least part of the second power units are electrically connected with at least one first power unit and form the power output port, and therefore the requirement of the charging system for increasing the number of charging power modules can be met, the number of power switches can be reduced, meanwhile, the cost of the whole charging system is reduced, and the size is reduced.

The charging system provided by the present application is described in an exemplary manner with reference to the accompanying drawings: fig. 2 is a schematic structural diagram of a charging system according to an embodiment of the present disclosure. As shown in fig. 2, for convenience of explanation, only the parts related to the present embodiment are shown, and the details are as follows: illustratively, the charging system includes a first power module 100, a second power module 200, a plurality of power switch modules 300, and a plurality of power output ports 400.

The first power module 100 includes a plurality of first power units, which are electrically connected in sequence through the power switch module 300, and enclose a fully-closed or semi-closed structure.

The second power module 200 includes a plurality of second power units, the number of the second power units is less than or equal to the number of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module 300, and at least a part of the second power units are respectively and electrically connected with at least one first power unit through the power switch module 300.

Part of the first power cells and/or at least part of the second power cells are electrically connected to the power output port 400 through the power switch module 300, respectively.

In this embodiment of the application, each power unit may be a charging power module that converts Alternating current to Direct current (AC/DC), an input end of each power unit is used to be electrically connected to a 380V commercial power, and an output end of each power unit is used to be electrically connected to other power units. In addition, the turning on and off of the power switch module 300 may be controlled using a switch matrix. The purpose of the switch matrix is to control the opening and closing of the circuit. For example, signal switching systems in automatic test equipment are typically composed of two or more matrix switches, interconnected according to various interface standards, to form flexible switching from test resources.

As shown in fig. 2, in an embodiment of the present application, specifically, a plurality of first power units are electrically connected in sequence through a power switch module 300, and enclose a fully enclosed structure.

The number of the second power units is smaller than that of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module 300, and each second power unit is respectively and electrically connected with the two first power units through the power switch module 300.

Part of the first power cells and all of the second power cells are electrically connected to the power output port 400 through the power switch module 300, respectively.

In the embodiment of the present application, as shown in fig. 2, for example, the first power module 100 includes ten first power units, and the second power module 200 includes two second power units. The ten first power units are electrically connected in sequence through the ten power switch modules 300 and form a fully-closed annular structure, and meanwhile, four first power units which are spaced from each other in the ten first power units are electrically connected with the power output port 400 through the power switch modules 300, and the power output port 400 can be connected with a vehicle to be charged by adopting a charging gun.

Two first power unit are connected through a power switch module 300 electricity, and simultaneously, every first power unit is connected with two first power unit electricity through power switch module 300 respectively, two other first power unit of interval between these two first power unit, and be connected two second power unit through power switch module 300 and power output port 400 electricity, so that adopt the rifle that charges and wait to charge vehicle connection, thereby in the electric pile system of filling that contains 12 power module and 6 guns that charge, can satisfy arbitrary 6 guns that charge, 4 guns that charge or 3 guns that charge can all be divided into all power unit. Compared with the background art, the embodiment of the application only needs 21 power switch modules 300, and on the basis of meeting the requirement of flexible distribution of power units, the quantity of the power switch modules 300 is greatly reduced, and the cost and the volume of a charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Fig. 3 is a schematic structural diagram of a second charging system according to an embodiment of the present disclosure. In another embodiment of the present application, as shown in fig. 3, a plurality of first power units are electrically connected in sequence through a power switch module 300, and enclose a fully enclosed structure.

The number of the second power units is smaller than that of the first power units, the plurality of second power units are respectively and sequentially electrically connected through the power switch module 300 and enclose a totally-enclosed structure, and each second power unit is respectively and electrically connected with one first power unit through the power switch module 300.

Part of the first power cells and part of the second power cells are electrically connected to the power output port 400 through the power switch module 300, respectively.

In the embodiment of the present application, all the first power units are connected end to end through the power switch module 300 to form the first power module 100 in an annular structure, and some of the first power units are electrically connected to the power output port 400 through the power switch module 300, and the power output port 400 may be connected to a vehicle to be charged by using a charging gun.

In addition, a plurality of second power units are also enclosed into a closed ring shape, and each second power unit is electrically connected with the first power unit connected with the power output port 400 so as to be connected with a vehicle to be charged by using a charging gun, so that in a charging pile system comprising 12 charging power modules and 6 charging guns, the power units shared by any 6 charging guns, 4 charging guns or 3 charging guns can be satisfied. Compared with the background art, the embodiment of the application only needs 22 power switch modules 300, and on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Fig. 4 is a schematic structural diagram of a third charging system provided in the embodiment of the present application, and fig. 5 is a schematic structural diagram of a fourth charging system provided in the embodiment of the present application. As shown in fig. 4 and 5, for example, the plurality of first power units are electrically connected in sequence through the power switch module 300, and enclose a fully-enclosed structure.

The number of the second power units is smaller than that of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module 300, and each second power unit is respectively and electrically connected with the three first power units through the power switch module 300.

In another embodiment of the present application, all the first power units are connected end to end through the power switch module 300 to form the first power module 100 in an annular structure, and some of the first power units are electrically connected to the power output port 400 through the power switch module 300, and the power output port 400 may be connected to a vehicle to be charged by using a charging gun.

In addition, one second power unit is electrically connected with another second power unit and three first power units through the power switch module 300 respectively, two first power units are electrically connected with the power output port 400, one first power unit is not electrically connected with the power output port 400, and all second power units are electrically connected with the power output port 400 through the power switch module 300 so as to be connected with a vehicle to be charged by adopting a charging gun, so that in a charging pile system comprising 12 charging power modules and 6 charging guns, the requirement that any 6 charging guns, 4 charging guns or 3 charging guns can be equally divided into all power units can be met. Meanwhile, on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Fig. 6 is a schematic structural diagram of a fifth charging system according to an embodiment of the present application. As shown in fig. 6, for example, the plurality of first power units are electrically connected in sequence through the power switch module 300, and enclose a fully-enclosed structure.

The number of the second power units is smaller than that of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module 300, and each second power unit is respectively and electrically connected with at least one first power unit through the power switch module 300.

Part of the first power units are electrically connected to the power output port 400 through the power switch module 300, respectively.

In addition, a second power unit is electrically connected with another second power unit and a first power unit through the power switch module 300 respectively, or a second power unit is electrically connected with another two second power units and a first power unit through the power switch module 300 respectively, and meanwhile, the second power unit is not electrically connected with the power output port 400 through the power switch module 300, so that in a charging pile system comprising 12 charging power modules and 6 charging guns, any 6 charging guns, 4 charging guns or 3 charging guns can be equally divided into power units. Meanwhile, on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Illustratively, the power output port 400 may include a charging gun electrically connected to the first power unit or the second power unit through the power switch module 300, so that the electric energy collected by the first power unit is output to the vehicle to be charged through the charging gun.

Fig. 7 is a schematic diagram of a sixth structure of a charging system according to an embodiment of the present application. As shown in fig. 7, for example, the plurality of first power units are electrically connected in sequence through the power switch module 300, and enclose a fully-enclosed structure.

Some of the first power cells are electrically connected to the power output port 400 through the power switch module 300, respectively.

In addition, one second power unit is electrically connected to another second power unit and another two first power units through the power switch module 300, or one second power unit is electrically connected to another two second power units and another two first power units through the power switch module 300. Meanwhile, the second power unit is not electrically connected with the power output port 400 through the power switch module 300, so that any 6 charging guns, 4 charging guns or 3 charging guns can be equally divided into power units in a charging pile system comprising 12 charging power modules and 6 charging guns. Meanwhile, on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Fig. 8 is a schematic diagram of a seventh structure of a charging system according to an embodiment of the present application. As shown in fig. 8, for example, the first power units are electrically connected in sequence through the power switch module 300, and enclose a semi-closed structure.

The number of the second power units is equal to that of the first power units, the plurality of second power units are respectively and sequentially electrically connected through the power switch module 300 and enclose a totally-enclosed structure, and part of the second power units are respectively and electrically connected with one first power unit through the power switch module 300.

In another embodiment of the present application, all the first power units are connected to form the first power module 100 of a semi-closed ring structure through the power switch module 300, and some of the first power units are electrically connected to the power output port 400 through the power switch module 300, and the power output port 400 may be connected to a vehicle to be charged by using a charging gun.

In addition, all the second power units are connected end to end through the power switch module 300 to form the second power module 200 of an annular structure, the second power unit is electrically connected with the first power unit connected with the power output port 400 or not connected with the power output port 400 through the power switch module 300, or the second power unit is electrically connected with the power output port 400 through the power switch module 300, the power output port 400 can be connected with a vehicle to be charged by adopting a charging gun, and therefore, in a charging pile system comprising 12 charging power modules and 6 charging guns, the requirement that all power units can be shared by any 6 charging guns, 4 charging guns or 3 charging guns can be met. Meanwhile, on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Fig. 9 is an eighth structural schematic diagram of a charging system according to an embodiment of the present application. As shown in fig. 9, for example, the plurality of first power units are electrically connected in sequence through the power switch module 300, and enclose a fully-enclosed structure.

The number of the second power units is less than or equal to that of the first power units, the plurality of second power units are respectively and electrically connected in sequence through the power switch module 300, and each second power unit is respectively and electrically connected with at least two first power units through the power switch module 300;

In the embodiment of the present application, all the first power units are connected to form the first power module 100 of a semi-closed ring structure through the power switch module 300, and a part of the first power units are electrically connected to the power output port 400 through the power switch module 300, respectively, and the power output port 400 may be connected to a vehicle to be charged by using a charging gun.

In addition, one second power unit is electrically connected to one second power unit and two first power units through the power switch module 300, and is electrically connected to the power output port 400 through the power switch module 300. Or one second power unit is electrically connected with one second power unit and three first power units through the power switch module 300, and is electrically connected with the power output port 400 through the power switch module 300. Or one second power unit is electrically connected with two second power units and two first power units through the power switch module 300, and the power output port 400 may be connected with a vehicle to be charged by using a charging gun. Thereby in the electric pile system that fills that contains 12 power module and 6 guns that charge, can satisfy arbitrary 6 guns that charge, 4 guns that charge or 3 guns that charge can all share the power unit. Meanwhile, on the basis of meeting the flexible distribution of the power units, the number of the power switch modules 300 is greatly reduced, and the cost and the volume of the charging system are reduced. In addition, in this embodiment, all the power switch modules 300 have no intersection point on the two-dimensional plane, and in practical applications, the bypassing of the conductive copper bar or the cable can be avoided, so as to further reduce the volume and the cost of the system.

Illustratively, the power switch module 300 includes a contactor or a relay.

In the embodiment of the present application, the power switch module 300 generally includes two power switches, i.e., a contactor or a relay, etc., for respectively controlling the conduction and the shutdown between the first power unit and the second power unit.

Fig. 10 is a flowchart of a charging control method according to an embodiment of the present application. As shown in fig. 10, the present embodiment exemplarily discloses a charging control method, including the steps of:

s101, acquiring the target number of power units to be distributed at a power output port;

s102, when the number of first-stage power units closest to the power output port meets a target number, calling the power units of the number of the first-stage power units;

and S103, when the number of the first-stage power units closest to the power output port does not meet the target number, increasing the power units step by step according to the number of the power units away from the power output port until the power units meeting the target number are obtained or all the power units are called.

In the embodiment of the present application, when a power unit needs to be allocated to one power output port (e.g., a charging gun), a target number of power units, such as two, four, or six power units, that need to be allocated to the power output port, is obtained first. And then judging whether the number of the first-order power units closest to the power output port meets the target number, and if so, directly calling the power units with the number of the first-order power units. And when the power output port does not meet the requirement, increasing and calling the power units step by step according to the number of the power units away from the power output port until the power units meeting the target number are obtained or all the power units are called, so that the power units with the target number can be automatically distributed to the power output port step by step according to the requirement of the power output port. The number of the maximum power units which can be distributed by the power output port depends on the number of charging guns which are being charged in the whole charging system, the maximum order of the power units and the power capacity of the charging guns.

Fig. 11 is a schematic diagram of automatic allocation of a charging control method according to an embodiment of the present application. As shown in fig. 11, exemplarily, when one power unit is required for the charging gun a, the power unit closest to the charging gun a is preferentially allocated: 1. when two power units are needed for the charging gun a, the second-order power unit, i.e., the power unit next to the charging gun a, can be extended: 2 and 5, if the 2 or 5 or 2&5 power unit has been occupied by other charging guns, a third order power unit may be allocated: 3. 7, 6 and 9. If the third order power cell is partially or fully occupied, a fourth order power cell may be further allocated: 4. 8, 10 and 11. If the fourth order power cell is partially or fully occupied, a fifth order power cell may be further allocated: 12 until all power cells are fully called by the charging gun being charged.

Fig. 12 is a second flowchart of a charging control method according to an embodiment of the present application. As shown in fig. 7, the present embodiment exemplarily discloses a charging control method, including the following steps:

s201, acquiring a first number of power units needing to be distributed by a power output port.

And S202, determining a first alternative power unit combination according to the first quantity.

And S203, determining target power unit combinations meeting the first number according to the states of the first alternative power unit combinations.

In the embodiment of the present application, each power output port 400 has a unique identifier, each power unit also has a unique identifier, and each power output port 400 calls the required number of power units based on the identifier of the power unit. Based on the charging system in the embodiment of fig. 2, according to the distribution method of the maximum power unit utilization principle, a first number (for example, 4 power units) of a first power unit and a second power unit that need to be distributed by a power output port 400 (for example, a charging gun a) is obtained, 4 power units need to be distributed according to the charging gun a, a first candidate power unit combination (for example, a first distribution matrix including all distribution modes) is determined, and then whether the power units in the distribution modes are available is verified one by one according to the first distribution matrix, which can be verified one by one from top to bottom of each group and from left to right in the group. Until finding the distribution mode (i.e. the distribution mode capable of utilizing the maximum 4 power units) meeting the matching requirement of the charging gun A, and finally confirming the distribution scheme.

Illustratively, the charge control method further includes:

In this embodiment of the application, based on the charging system in the embodiment of fig. 2, according to the distribution method based on the principle of maximum utilization of power units, a first number (e.g., 4 power units, respectively) of power units that need to be distributed by a first power output port (e.g., a charging gun a) and a second power output port (e.g., a charging gun B) may be obtained, and a first candidate power unit combination (e.g., a first distribution matrix including all distribution modes) is determined according to that 4 power units need to be distributed by the charging gun a and the charging gun B, respectively. And verifying one by one according to the first distribution matrix until a distribution mode meeting the requirements of all power output ports is found, namely determining target power unit combinations meeting the first quantity according to the state of the first alternative power unit combinations. For example, there are 12 power units in the charging system, and when only one charging gun needs to allocate a power unit, all 12 power units can be equally allocated to the charging gun. When two guns that charge need distribute power unit, can give two guns that charge 6 guns that charge respectively. When three guns that charge need distribute power unit, can distribute 4 guns that charge respectively for three guns that charge. When four guns that charge need distribute power unit, can distribute 3 guns that charge respectively for two guns that charge.

Fig. 13 is a third flowchart of a charging control method provided in an embodiment of the present application, and as shown in fig. 13, an exemplary charging control method disclosed in the present embodiment includes the following steps:

s301, acquiring the first port number of the power output ports required to be used and the second number of the power units.

And S302, determining a second alternative power unit combination according to the first port number and the second number.

And S303, determining the target power unit combination with the shortest serial path according to the state of the second alternative power unit combination.

In the embodiment of the present application, based on the charging system in the embodiment of fig. 2, according to the distribution method based on the principle of minimum investment of power switch modules, under the condition of the same number of charging guns and the same number of power units, the distribution manner of each charging gun may have multiple routes, but if the number of power switch modules passing through is less, the current passing through the last power switch module is smaller, which is beneficial to the type selection and the service life of the power switch module. For example, taking the charging gun a as an example, when the charging guns a, B, and C are plugged at the same time, there are various distribution manners for the charging gun a, wherein some distribution manners need to pass through three power switch modules, and each energy collected by the charging gun in such a distribution manner needs to pass through 3 power switch modules before reaching the corresponding first power unit, that is, the last power switch module needs to carry the output current of the first 3 power units.

Some distribution modes need to pass through two power switch modules, and the distribution mode can equally divide 12 power units, but the charging gun A and the charging gun C are respectively provided with 3 power units at two branches, so that the power switch modules connected with the first power unit and the charging gun A only need to bear the output current of 2 power units at most. On the premise that 3 charging guns can be equally divided into 12 power units, the distribution formula is more favorable for the type selection and the service life of the power switch module.

Fig. 14 is a fourth flowchart of a charging control method according to an embodiment of the present application. As shown in fig. 14, the present embodiment discloses a charging control method, which includes the following steps:

s401, acquiring the number of second ports of the currently occupied power output ports and the third number of power units corresponding to all the power output ports.

S402, obtaining the number of the third ports of the power output ports occupied after adjustment, and determining a third alternative power unit combination according to the number of the third ports and the third number.

And S403, determining a target power unit combination corresponding to the power output port occupied after adjustment according to the third alternative power unit combination and the use state of the power unit.

In the embodiment of the application, according to the distribution method of the principle that the influence of the charging system is minimum when the charging gun is newly added, for the charging system which is well distributed and is in the charging process, the phenomena that some charging guns are charging and some charging guns stop charging can occur. When the number of charging guns needs to be increased or decreased, power distribution needs to be performed again, and if the distribution mode in the former charging scenario needs to stop most of the power units or even all the power units in the new charging scenario, and then restart the power units according to the distribution mode in the new charging scenario, the power distribution will affect the user vehicle being charged. Since all power units require time to stop and start, if a large drop in output power occurs, the drop in output power will affect the charging experience of the user even if the power is restored later.

In another embodiment of the present application, based on the charging system in the embodiment of fig. 2, first, the second number of currently occupied power output ports and the third number of power units corresponding to all power output ports are obtained. For example, the currently occupied power output ports include charging guns a, B, and C, all of which correspond to 12 power units, that is, each charging gun may correspond to 4 power units, respectively, and the charging guns a, B, and C are charging simultaneously. And then acquiring the number of third ports of the adjusted occupied power output port, for example, the number of charging guns D needs to be increased for use, and 4 charging guns are adjusted. And determining a third alternative power unit combination (for example, a third distribution matrix comprising all distribution modes) according to the third port number (namely 4 charging guns) and the third number (namely 12 power units), namely, dividing the 4 charging guns into 12 power units in the moment to obtain the third distribution matrix comprising all distribution modes. The best distribution mode is that the charging guns A, B and C only exit from one end power unit to support, so that the influence on the whole charging system is minimum, the change rate is minimum, and the charging experience of a user is less influenced. If one or more charging guns need to stop 2 or 3 power units and then recall the other 3 power units, the output of one or more charging guns is greatly reduced and then gradually recovered, and therefore the charging experience of a user is affected.

An exemplary charging post includes a charging system.

In the embodiment of the application, the charging system is arranged in the charging pile, the plurality of first power units are sequentially and electrically connected to form a fully-closed or semi-closed structure and form a power output port, the plurality of second power units are sequentially and electrically connected to enable at least part of the second power units to be electrically connected with at least one first power unit and form the power output port, and therefore the requirement of the charging system for increasing the charging power modules can be met, the number of power switches can be reduced, meanwhile, the cost of the whole charging system is reduced, and the size is reduced.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 application.

In the embodiments provided in the present application, it should be understood that the disclosed charging system may be implemented in other manners. For example, the above-described charging system embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A charging system comprising a first power module, a second power module, a plurality of power switch modules, and a plurality of power output ports;

2. The charging system according to claim 1, wherein a plurality of the first power units are respectively and electrically connected in sequence through the power switch modules and enclose a fully-enclosed structure;

and part of the first power units and all the second power units are electrically connected with the power output port through the power switch modules respectively.

3. The charging system according to claim 1, wherein a plurality of the first power units are respectively and sequentially electrically connected through the power switch module and enclose a fully-enclosed structure;

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch modules and enclose a totally-enclosed structure, and each second power unit is respectively and electrically connected with one first power unit through the power switch module;

4. The charging system according to claim 1, wherein a plurality of the first power units are respectively and electrically connected in sequence through the power switch modules and enclose a fully-enclosed structure;

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch module, and each second power unit is respectively and electrically connected with the three first power units through the power switch module;

5. The charging system according to claim 1, wherein a plurality of the first power units are respectively and electrically connected in sequence through the power switch modules and enclose a fully-enclosed structure;

the number of the second power units is smaller than that of the first power units, the second power units are respectively and sequentially electrically connected through the power switch module, and each second power unit is respectively and electrically connected with at least one first power unit through the power switch module;

6. The charging system according to claim 1, wherein a plurality of the first power units are respectively and electrically connected in sequence through the power switch modules and enclose a fully-enclosed structure;

7. The charging system according to claim 1, wherein a plurality of the first power units are electrically connected in sequence through the power switch modules, respectively, and enclose a semi-closed structure;

8. The charging system according to claim 1, wherein a plurality of the first power units are respectively and sequentially electrically connected through the power switch module and enclose a fully-enclosed structure;

9. A charging control method using the charging system according to any one of claims 1 to 8, characterized by comprising the steps of:

10. A charging control method using the charging system according to any one of claims 1 to 8, characterized by comprising the steps of:

11. The charge control method according to claim 10, characterized by further comprising:

12. A charging control method using the charging system according to any one of claims 1 to 8, characterized by comprising the steps of:

acquiring the number of first ports of power output ports to be used and the second number of power units;

determining a second alternative power unit combination according to the first port number and the second number;

and determining the target power unit combination with the shortest series path according to the state of the second alternative power unit combination.

13. A charging control method using the charging system according to any one of claims 1 to 8, characterized by comprising the steps of:

acquiring the number of second ports of the currently occupied power output ports and the third number of power units corresponding to all the power output ports;

14. The charge control method according to claim 13, wherein the determining, according to the third candidate power cell combination and the usage states of the power cells, a target power cell combination corresponding to the adjusted occupied power output port includes:

15. A charging pile characterized by comprising the charging system according to any one of claims 1 to 8.