CN116526624A - Battery energy storage power supply system, control method and device, processor and electronic equipment - Google Patents

Battery energy storage power supply system, control method and device, processor and electronic equipment Download PDF

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Publication number
CN116526624A
CN116526624A CN202310514672.3A CN202310514672A CN116526624A CN 116526624 A CN116526624 A CN 116526624A CN 202310514672 A CN202310514672 A CN 202310514672A CN 116526624 A CN116526624 A CN 116526624A
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CN
China
Prior art keywords
battery
battery pack
target
power supply
energy storage
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Pending
Application number
CN202310514672.3A
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Chinese (zh)
Inventor
彭健
邓志江
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Foxess Co ltd
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Foxess Co ltd
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Publication date
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Priority to CN202310514672.3A priority Critical patent/CN116526624A/en
Publication of CN116526624A publication Critical patent/CN116526624A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The application discloses battery energy storage power supply system and control method, device, processor and electronic equipment relates to the power supply technology field, and this system includes: a plurality of battery packs connected in series, each battery pack comprising at least: a battery module; the first end of the fuse is connected with the positive output end of the battery module, and the second end of the fuse is connected with the first movable end of the single-pole double-throw switch; and when detecting that the first target battery pack has a fault, controlling the fixed end of the single-pole double-throw switch corresponding to the first target battery pack to be connected with the second movable end so as to enable the first target battery pack to be in a short circuit state. Through this application, when any one of them battery package trouble, the problem that all battery packages can not normally work has been solved.

Description

Battery energy storage power supply system, control method and device, processor and electronic equipment
Technical Field
The application relates to the technical field of power supplies, in particular to a battery energy storage and power supply system, a control method and device, a processor and electronic equipment.
Background
Energy storage, particularly domestic energy storage, is rapidly evolving, batteries being the primary device for energy storage. As shown in fig. 1, a typical battery PACK power supply structure in the prior art includes a plurality of battery PACKs connected in series, such as the battery PACKs pack_1 to pack_n shown in fig. 1. The BMS in fig. 1 is a battery management unit, and a power converter is used to convert the voltage of a battery pack to supply power to a load. Each battery pack further includes a plurality of cells connected in series, such as cells cell_1 through cell_x in each battery pack shown in fig. 1. The voltage of each battery PACK is typically between 40V and 70V, and one battery PACK power supply structure is typically formed by connecting two to eight battery PACKs in series, with the voltage typically being between 40V and 500V.
As shown in fig. 1, since a plurality of battery packs are connected in series, when any one of the battery packs fails, the entire battery pack power supply structure cannot be discharged or charged, resulting in paralysis of the entire battery pack power supply structure. Great inconvenience is brought to users and maintenance cost is also brought to suppliers.
Aiming at the problem that in the related art, because a plurality of battery packs are connected in series, when any battery pack fails, all battery packs cannot work normally, so that power cannot be supplied normally, no effective solution is proposed at present.
Disclosure of Invention
The main objective of the present application is to provide a battery energy storage and power supply system, a control method, a device, a processor and an electronic device, so as to solve the problem that in the related art, because a plurality of battery packs are connected in series, when any one of the battery packs fails, all the battery packs cannot work normally, and therefore, the battery packs cannot supply power normally.
To achieve the above object, according to one aspect of the present application, a battery energy storage and power supply system is provided. The system comprises: a plurality of battery packs connected in series, wherein the plurality of battery packs connected in series are used for providing voltage for a load, and each battery pack at least comprises: a battery module; the first end of the fuse is connected with the positive output end of the battery module, and the second end of the fuse is connected with the first movable end of the single-pole double-throw switch; the single-pole double-throw switch is characterized in that a second movable end of the single-pole double-throw switch is connected with a negative input end of the battery module, a stationary end of the single-pole double-throw switch is connected with a negative output end of a battery pack adjacent to a current battery pack, and when a first target battery pack is detected to have a fault, the stationary end of the single-pole double-throw switch corresponding to the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state.
Further, each battery pack further includes: the battery management unit is used for outputting a target control instruction to the single-pole double-throw switch, controlling the fixed end of the single-pole double-throw switch to be connected with the first movable end through the target control instruction, or controlling the fixed end of the single-pole double-throw switch to be connected with the second movable end through the target control instruction, wherein the target control instruction is one of the following: the first control instruction and the second control instruction; if the battery management unit outputs the first control instruction, controlling the fixed end of the single-pole double-throw switch to be connected with the second movable end; and if the battery management unit outputs the second control instruction, controlling the fixed end of the single-pole double-throw switch to be connected with the first movable end.
Further, the battery energy storage power supply system further includes: a battery control unit for monitoring the state of the battery module of each battery pack and for managing each battery management unit; and the power converter is used for converting the output voltages of the plurality of battery packs connected in series to provide voltages for the load.
In order to achieve the above object, according to one aspect of the present application, there is provided a control method of a battery energy storage power supply system. The method comprises the following steps: detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in a battery energy storage and power supply system; if the battery module in the first target battery pack is detected to have a fault, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
Further, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, the method further comprises: outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Further, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, the method further comprises: outputting a fault indication signal to a battery control unit in the battery energy storage and power supply system through the first battery management unit, wherein the fault indication signal is used for representing fault information of the first target battery pack; and sending the fault information of the first target battery pack to a target object through the battery control unit so as to process the fault of the first target battery pack through the target object.
Further, after detecting, by each battery management unit in the battery energy storage and power supply system, the state of the battery module in the battery pack corresponding to the battery management unit, the method further includes: if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; determining a battery pack with the highest voltage value as a second target battery pack, and sending target information to a second battery management unit corresponding to the second target battery pack through the battery control unit so as to output the first control instruction through the second battery management unit according to the target information, wherein the fixed end of a single-pole double-throw switch in the second target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the second target battery pack is in a short circuit state.
Further, after detecting, by each battery management unit in the battery energy storage and power supply system, the state of the battery module in the battery pack corresponding to the battery management unit, the method further includes: if the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; determining a battery pack with the lowest voltage value as a third target battery pack, and sending target information to a third battery management unit corresponding to the third target battery pack through the battery control unit so as to output the first control instruction through the third battery management unit according to the target information, wherein the fixed end of a single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
In order to achieve the above object, according to another aspect of the present application, there is provided a control device of a battery energy storage and power supply system. The device comprises: the first detection unit is used for detecting the state of a battery module in a battery pack corresponding to each battery management unit in the battery energy storage and power supply system; the first output unit is used for outputting a first control instruction through a first battery management unit corresponding to the first target battery pack if the fault of the battery module in the first target battery pack is detected; and the first control unit is used for controlling the connection between the fixed end and the second movable end of the single-pole double-throw switch in the first target battery pack according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
Further, the apparatus further comprises: the second output unit is used for controlling the fixed end and the second movable end of the single-pole double-throw switch in the first target battery pack to be connected according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, and outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; and the second control unit is used for controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Further, the apparatus further comprises: the third output unit is used for controlling the fixed end and the second movable end of the single-pole double-throw switch in the first target battery pack to be connected according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, and then outputting a fault indication signal to a battery control unit in the battery energy storage power supply system through the first battery management unit, wherein the fault indication signal is used for representing fault information of the first target battery pack; and the sending unit is used for sending the fault information of the first target battery pack to a target object through the battery control unit so as to process the fault of the first target battery pack through the target object.
Further, the apparatus further comprises: the second detection unit is used for detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in the battery energy storage power supply system, and detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system if the battery energy storage power supply system is in a charging state to obtain the voltage value of each battery pack; the first issuing unit is used for determining that a battery pack with the highest voltage value is a second target battery pack, issuing target information to a second battery management unit corresponding to the second target battery pack through the battery control unit, and outputting the first control instruction through the second battery management unit according to the target information, wherein the fixed end of the single-pole double-throw switch in the second target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the second target battery pack is in a short circuit state.
Further, the apparatus further comprises: the third detection unit is used for detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in the battery energy storage power supply system, and detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system if the battery energy storage power supply system is in a discharging state to obtain the voltage value of each battery pack; and the second issuing unit is used for determining that the battery pack with the lowest voltage value is a third target battery pack, issuing target information to a third battery management unit corresponding to the third target battery pack through the battery control unit, and outputting the first control instruction through the third battery management unit according to the target information, wherein the fixed end of the single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
To achieve the above object, according to one aspect of the present application, there is provided a processor for executing a program, wherein the program executes the control method of the battery energy storage power supply system described in any one of the above.
To achieve the above object, according to one aspect of the present application, there is provided an electronic device including one or more processors and a memory for storing a control method for the one or more processors to implement the battery energy storage and power supply system described in any one of the above.
By this application, the following is adopted: a plurality of battery packs connected in series, wherein the plurality of battery packs connected in series are used for providing voltage for a load, and each battery pack at least comprises: a battery module; the first end of the fuse is connected with the positive output end of the battery module, and the second end of the fuse is connected with the first movable end of the single-pole double-throw switch; the single-pole double-throw switch, the second movable end of the single-pole double-throw switch is connected with the negative input end of the battery module, the stationary end of the single-pole double-throw switch is connected with the negative output end of the battery pack adjacent to the current battery pack, wherein when a first target battery pack is detected to have a fault, the stationary end of the single-pole double-throw switch corresponding to the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state, and the problem that in the related art, due to the fact that a plurality of battery packs are connected in series, when any battery pack fails, all battery packs cannot work normally, and normal power supply cannot be achieved is solved. In this scheme, can be through single pole double throw switch with first target battery package disconnection immediately when there is the abnormality, can not produce the influence to other battery packages to and battery energy storage power supply system can be outward normal power supply, and then has reached the effect that improves battery package availability factor.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:
FIG. 1 is a schematic diagram of a prior art battery pack power architecture;
FIG. 2 is a schematic diagram of a battery energy storage and power supply system provided according to an embodiment of the present application;
FIG. 3 is a flow chart of a control method of a battery energy storage and power supply system provided according to an embodiment of the present application;
fig. 4 is a schematic diagram of battery pack charging provided according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a battery pack discharge provided in accordance with an embodiment of the present application;
FIG. 6 is a schematic diagram of a control device of a battery energy storage and power supply system provided according to an embodiment of the present application;
fig. 7 is a schematic diagram of an electronic device provided according to an embodiment of the present application.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, in the prior art, since a plurality of battery packs are connected in series, when any one of the battery packs fails, the entire battery pack power supply structure cannot be discharged or charged, and thus the entire battery pack power supply structure breaks down. Great inconvenience is brought to users and maintenance cost is also brought to suppliers. Under the technical background, a battery energy storage and power supply system is provided.
In the following, the invention will be described, and fig. 2 is a schematic diagram of a battery energy storage and power supply system according to an embodiment of the present application, as in fig. 2, the system includes: a plurality of battery packs 2N0 connected in series, wherein the plurality of battery packs 2N0 connected in series are configured to provide a voltage to a load, and each battery pack 2N0 includes at least: a battery module 2N1; the first end of the fuse 2N2 is connected with the positive output end of the battery module 2N1, and the second end of the fuse 2N2 is connected with the first movable end of the single-pole double-throw switch 2N 3; and a single-pole double-throw switch 2N3, wherein a second movable end of the single-pole double-throw switch 2N3 is connected with a negative input end of the battery module 2N1, and a stationary end of the single-pole double-throw switch 2N3 is connected with a negative output end of a battery pack adjacent to the current battery pack 2N0, and when a fault is detected in the first target battery pack 2N0, the stationary end of the single-pole double-throw switch 2N3 corresponding to the first target battery pack 2N0 is controlled to be connected with the second movable end so as to enable the first target battery pack 2N0 to be in a short circuit state.
Each battery pack 2N0 further includes: the battery management unit 2N4 is configured to output a target control instruction for the single-pole double-throw switch 2N3, and control the fixed end of the single-pole double-throw switch 2N3 to be connected with the first movable end through the target control instruction, or control the fixed end of the single-pole double-throw switch 2N3 to be connected with the second movable end through the target control instruction, where the target control instruction is one of the following: the first control instruction and the second control instruction; if the battery management unit 2N4 outputs the first control instruction, the fixed end of the single-pole double-throw switch 2N3 is controlled to be connected with the second movable end; if the battery management unit 2N4 outputs the second control instruction, the stationary end of the single pole double throw switch 2N3 is controlled to be connected with the first movable end.
Specifically, the battery energy storage power supply system includes: a plurality of battery packs (210 to 21N) connected in series as shown in fig. 2. Each battery pack comprises a battery module, a fuse and a single-pole double-throw switch. As shown in fig. 2, the battery pack 210 includes: a battery module 211, a fuse 212, and a single pole double throw switch 213. The first end of the fuse 212 is connected to the positive output terminal of the battery module 211, and the second end of the fuse 212 is connected to the first movable end of the single pole double throw switch 213. The second movable end of the single pole double throw switch 213 is connected to the negative input end of the battery module 211, and the stationary end of the single pole double throw switch 213 is connected to the main switch 500 when the current battery pack is the first battery pack, as shown in fig. 2. When the battery pack is not the first battery pack, the stationary end of the single pole double throw switch is connected with the negative output end of the battery pack adjacent to the current battery pack 2N 0. The plurality of battery packs connected in series are used for providing voltage for the load to work.
Also included in each battery pack in the battery energy storage system is a battery management unit 2N4, such as battery management unit 214 included in battery pack 210. The battery management unit 214 is configured to detect a state of the battery pack 210, and when the battery pack 210 is abnormal, the battery management unit 214 outputs a first control instruction, and controls the fixed end of the single pole double throw switch 213 in the battery pack 210 to be connected with the second movable end through the first control instruction, so that the battery pack 210 is in a short circuit state, that is, the battery pack 210 is not connected into the circuit. When the battery pack 210 is in the normal state, the battery management unit 214 outputs a second control command, and controls the fixed end of the single pole double throw switch 213 in the battery pack 210 to be connected with the first movable end through the second control command, so that the battery pack 210 is in the on state, that is, the battery pack 210 is connected into the circuit.
In summary, through the battery management unit and the single-pole double-throw switch, when the battery pack fails, the battery pack is accurately and timely cut off from the circuit, so that other battery packs can be normally powered to the outside, and the reliability of the battery pack in the battery energy storage system is improved.
In order to more efficiently use the battery pack, the battery energy storage and power supply system further comprises: a battery control unit 300 for monitoring the state of the battery module of each battery pack and for managing each battery management unit; the power converter 400 is configured to convert output voltages of the plurality of battery packs 2N0 connected in series to provide voltages to the load.
Specifically, as shown in fig. 2, the battery energy storage and power supply system further includes: a battery control unit 300 and a power converter 400. The battery control unit 300 monitors the state of the battery module of each battery pack in real time and manages each battery management unit. The power converter 400 is used for converting the output voltages of the plurality of series-connected battery packs 2N0 to provide an appropriate voltage for the load.
According to the control method of the battery energy storage power supply system, a plurality of battery packs are connected in series, wherein the plurality of battery packs are used for providing voltage for loads, and each battery pack at least comprises: a battery module; the first end of the fuse is connected with the positive output end of the battery module, and the second end of the fuse is connected with the first movable end of the single-pole double-throw switch; the single-pole double-throw switch, the second movable end of the single-pole double-throw switch is connected with the negative input end of the battery module, the stationary end of the single-pole double-throw switch is connected with the negative output end of the battery pack adjacent to the current battery pack, wherein when a first target battery pack is detected to have a fault, the stationary end of the single-pole double-throw switch corresponding to the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state, and the problem that in the related art, due to the fact that a plurality of battery packs are connected in series, when any battery pack fails, all the battery packs cannot work normally, and normal power supply cannot be caused is solved. In this scheme, can be through single pole double throw switch with first target battery package disconnection immediately when there is the abnormality, can not produce the influence to other battery packages to and battery energy storage power supply system can be outward normal power supply, and then has reached the effect that improves battery package availability factor.
The present invention will be described with reference to preferred implementation steps, and fig. 3 is a flowchart of a control method of a battery energy storage power supply system according to an embodiment of the present application, where the control method is applied to the battery energy storage power supply system described above.
As shown in fig. 3, the method comprises the steps of:
step S301, detecting the state of a battery module in a battery pack corresponding to each battery management unit in the battery energy storage and power supply system;
step S302, if a fault is detected in a battery module in a first target battery pack, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack;
step S303, according to the first control instruction, the stationary end of the single-pole double-throw switch in the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state.
Specifically, when the battery energy storage power supply system is charged or discharged, each battery management unit detects the state of a battery module in a battery pack corresponding to the battery management unit, if the battery module in a first target battery pack is detected to have a fault, the first battery management unit corresponding to the first target battery pack can immediately output a first control instruction, and the fixed end of the single-pole double-throw switch in the first target battery pack is controlled to be connected with the second movable end through the first control instruction, so that the first target battery pack is in a short-circuit state.
In actual operation, when the Battery Management Unit (BMU) detects the fault of the battery module of the battery pack where the BMU is located, the BMU outputs a control signal of the single-pole double-throw switch, and controls the single-pole double-throw switch to connect the fixed end of the single-pole double-throw switch with the second movable end of the single-pole double-throw switch, so that the single-pole double-throw switch bypasses the battery pack, and the fault battery pack can be prevented from affecting the normal operation of other battery packs.
In summary, when the battery pack fails, the battery pack is accurately and timely cut off from the circuit through the battery management unit and the single-pole double-throw switch, so that other battery packs are ensured to be in a normal working state, and the service efficiency of the battery pack in the battery energy storage system is improved.
In the control method of the battery energy storage power supply system provided in the embodiment of the present application, after controlling, according to a first control instruction, that a fixed end of a single-pole double-throw switch in a first target battery pack is connected to a second movable end, so that the first target battery pack is in a short-circuit state, the method further includes: outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Specifically, if the failure of the battery module in the first target battery pack in the short-circuit state has been resolved, the first battery management unit immediately outputs a second control command, and connects the stationary end of the single pole double throw switch in the first target battery pack with the first movable end through the second control command, so that the first target battery pack is in the access state, that is, the first target battery pack is re-connected into the circuit.
After controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, the method further comprises the following steps: outputting a fault indication signal to a battery control unit in the battery energy storage power supply system through a first battery management unit, wherein the fault indication signal is used for representing fault information of a first target battery pack; the fault information of the first target battery pack is sent to the target object through the battery control unit, so that the fault of the first target battery pack is processed through the target object.
Specifically, after the first battery management unit controls the first target battery pack to be in a short circuit state, the first battery management unit can output a fault indication signal to a battery control unit in the battery energy storage and power supply system at the same time, and the battery control unit can send fault information of the first target battery pack to a target object so as to process faults of the first target battery pack in time through the target object.
In addition, in actual operation, there is often a problem of voltage imbalance between the battery PACKs PACK in fig. 1, and the imbalance voltage is usually around 1V. Such voltage imbalance causes that when the battery system is charged, the battery with high voltage is charged fast, and the battery with low voltage is charged in advance and is cut off, and then the battery with low voltage cannot be charged sufficiently, as shown in fig. 4, the battery pack (solid line) with high voltage is charged in advance and is cut off; when discharging, the battery with high voltage discharges fast, and the battery with low voltage discharges in advance, as shown in fig. 5, the battery pack (solid line) with high voltage discharges in advance, and the usable energy of the whole energy storage battery system is greatly reduced, and even the energy storage battery system cannot be used.
In the prior art, a switching resistor serial branch connected with a battery cell serial structure in parallel is added in each battery PACK, when the voltage of one battery PACK is too high, a switching tube in the switching resistor serial branch in the battery PACK is conducted, and then the battery cell serial structure discharges through the conducted switching tube and a resistor, so that the voltage balance among the battery PACKs is achieved. However, the scheme consumes the electric energy in a heat energy form, so that the electric energy utilization rate of the battery system is low, and the social requirement of energy conservation and environmental protection is contrary.
In order to solve the problem of battery pack voltage equalization, in the control method of the battery energy storage power supply system provided in the embodiment of the present application, after detecting the state of the battery module in the battery pack corresponding to the battery management unit through each battery management unit in the battery energy storage power supply system, the method further includes: if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; determining a battery pack with the highest voltage value as a second target battery pack, and sending target information to a second battery management unit corresponding to the second target battery pack through a battery control unit so as to output a first control instruction according to the target information through the second battery management unit, wherein according to the first control instruction, a fixed end of a single-pole double-throw switch in the second target battery pack is controlled to be connected with a second movable end, so that the second target battery pack is in a short circuit state.
If the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; the battery pack with the lowest voltage value is determined to be a third target battery pack, target information is sent to a third battery management unit corresponding to the third target battery pack through a battery control unit, a first control instruction is output through the third battery management unit according to the target information, and the fixed end of a single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
Specifically, if the battery energy storage power supply system is in a charging state, a battery control unit in the battery energy storage power supply system detects a voltage value of each battery pack to obtain the voltage value of each battery pack, and determines a battery pack with the highest voltage value from each battery pack as a second target battery pack. And then, the battery control unit issues target information to a second battery management unit corresponding to the second target battery pack, so that a first control instruction is output through the second battery management unit according to the target information, and the fixed end of the single-pole double-throw switch in the second target battery pack is controlled to be connected with the second movable end through the first control instruction, so that the second target battery pack is in a short circuit state. That is, the second target battery pack is bypassed for a period of time, so that the second target battery pack is not charged temporarily, and other battery packs continue to charge, so that voltage balance among the battery packs is achieved, and the electric energy utilization rate of the battery system is greatly increased.
It should be noted that the target information issued by the battery control unit may be a control instruction signal, and the control instruction signal controls the second battery management unit to bypass the second target battery pack. The target information issued by the battery control unit can also be information of a battery pack with the highest SOC, and the battery pack with the highest SOC is output to the BMU where the battery pack is located, so that a control signal of the single-pole double-throw switch output by the BMU is controlled to enable the fixed end of the single-pole double-throw switch in the battery pack to be connected with the second movable end of the single-pole double-throw switch.
And if the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack by a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack, and determining the battery pack with the lowest voltage value from each battery pack as a third target battery pack. And then, the battery control unit issues target information to a third battery management unit corresponding to the third target battery pack, so that a first control instruction is output through the third battery management unit according to the target information, and the fixed end of the single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end through the first control instruction, so that the third target battery pack is in a short circuit state. That is, the battery pack is bypassed for a period of time so that the battery pack is not discharged temporarily, and other battery packs continue to discharge so as to achieve voltage equalization among the battery packs. The period of time may be determined according to the magnitude of the voltage difference between the battery packs. In practical applications, the voltage value between each battery pack can be determined according to the voltage value between each battery pack detected by a Battery Control Unit (BCU) in real time, and when the voltage difference between the battery packs is smaller than a predetermined value, the bypass can be eliminated. Multiple battery packs may also be bypassed simultaneously.
According to the control method of the battery energy storage power supply system, the states of the battery modules in the battery packs corresponding to the battery management units are detected through each battery management unit in the battery energy storage power supply system; if the battery module in the first target battery pack is detected to have a fault, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack; according to a first control instruction, the fixed end of the single-pole double-throw switch in the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state, and the problem that in the related art, due to the fact that a plurality of battery packs are connected in series, when any battery pack fails, all battery packs cannot work normally, and therefore normal power supply cannot be achieved is solved. In this scheme, can be through single pole double throw switch with first target battery package disconnection immediately when there is the abnormality, can not produce the influence to other battery packages to and battery energy storage power supply system can be outward normal power supply, and then has reached the effect that improves battery package availability factor.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
The embodiment of the application also provides a control device of the battery energy storage power supply system, and it is to be noted that the control device of the battery energy storage power supply system of the embodiment of the application can be used for executing the control method for the battery energy storage power supply system provided by the embodiment of the application. The following describes a control device of a battery energy storage and power supply system provided in an embodiment of the present application.
Fig. 6 is a schematic diagram of a control device of a battery energy storage and power supply system according to an embodiment of the present application. As shown in fig. 6, the apparatus includes: a first detection unit 601, a first output unit 602, and a first control unit 603.
A first detection unit 601, configured to detect, by each battery management unit in the battery energy storage and power supply system, a state of a battery module in a battery pack corresponding to the battery management unit;
the first output unit 602 is configured to output a first control instruction through a first battery management unit corresponding to the first target battery pack if a failure of the battery module in the first target battery pack is detected;
The first control unit 603 is configured to control, according to a first control instruction, connection between the fixed end and the second movable end of the single pole double throw switch in the first target battery pack, so that the first target battery pack is in a short circuit state.
According to the control device of the battery energy storage power supply system, the state of the battery module in the battery pack corresponding to the battery management unit is detected through each battery management unit in the battery energy storage power supply system by the first detection unit 601; if the first output unit 602 detects that the battery module in the first target battery pack has a fault, a first control instruction is output through a first battery management unit corresponding to the first target battery pack; the first control unit 603 controls the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction, so that the first target battery pack is in a short circuit state, and the problem that in the related art, due to the fact that a plurality of battery packs are connected in series, when any one of the battery packs fails, all the battery packs cannot work normally, and therefore power cannot be supplied normally is solved. In this scheme, can be through single pole double throw switch with first target battery package disconnection immediately when there is the abnormality, can not produce the influence to other battery packages to and battery energy storage power supply system can be outward normal power supply, and then has reached the effect that improves battery package availability factor.
Optionally, in the control device of the battery energy storage power supply system provided in the embodiment of the present application, the device further includes: the second output unit is used for controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so that the first target battery pack is in a short circuit state, and outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; the second control unit is used for controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Optionally, in the control device of the battery energy storage power supply system provided in the embodiment of the present application, the device further includes: the third output unit is used for controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state, and then outputting a fault indication signal to a battery control unit in the battery energy storage and power supply system through the first battery management unit, wherein the fault indication signal is used for representing fault information of the first target battery pack; and the sending unit is used for sending the fault information of the first target battery pack to the target object through the battery control unit so as to process the fault of the first target battery pack through the target object.
Optionally, in the control device of the battery energy storage power supply system provided in the embodiment of the present application, the device further includes: the second detection unit is used for detecting the state of the battery module in the battery pack corresponding to the battery management unit through each battery management unit in the battery energy storage power supply system, and if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through the battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; the first issuing unit is used for determining that the battery pack with the highest voltage value is a second target battery pack, issuing target information to a second battery management unit corresponding to the second target battery pack through the battery control unit, and outputting a first control instruction according to the target information through the second battery management unit, wherein the fixed end of the single-pole double-throw switch in the second target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the second target battery pack is in a short circuit state.
Optionally, in the control device of the battery energy storage power supply system provided in the embodiment of the present application, the device further includes: the third detection unit is used for detecting the voltage value of each battery pack through the battery control unit in the battery energy storage power supply system if the battery energy storage power supply system is in a discharging state after detecting the state of the battery module in the battery pack corresponding to the battery management unit through each battery management unit in the battery energy storage power supply system, so as to obtain the voltage value of each battery pack; the second issuing unit is used for determining that the battery pack with the lowest voltage value is a third target battery pack, issuing target information to a third battery management unit corresponding to the third target battery pack through the battery control unit, and outputting a first control instruction according to the target information through the third battery management unit, wherein the fixed end of the single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
The control device of the battery energy storage power supply system comprises a processor and a memory, wherein the first detection unit 601, the first output unit 602, the first control unit 603 and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one, and the management and control of the battery pack are realized by adjusting kernel parameters.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the invention provides a processor, which is used for running a program, wherein the control method of a battery energy storage power supply system is executed when the program runs.
As shown in fig. 7, an embodiment of the present invention provides an electronic device, where the device includes a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, the following steps are implemented: detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in the battery energy storage and power supply system; if the battery module in the first target battery pack is detected to have a fault, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
Optionally, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected to the second movable end according to the first control instruction so that the first target battery pack is in a short-circuit state, the method further includes: outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Optionally, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected to the second movable end according to the first control instruction so that the first target battery pack is in a short-circuit state, the method further includes: outputting a fault indication signal to a battery control unit in the battery energy storage power supply system through a first battery management unit, wherein the fault indication signal is used for representing fault information of a first target battery pack; the fault information of the first target battery pack is sent to the target object through the battery control unit, so that the fault of the first target battery pack is processed through the target object.
Optionally, after detecting the state of the battery module in the battery pack corresponding to the battery management unit by each battery management unit in the battery energy storage power supply system, the method further includes: if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; determining a battery pack with the highest voltage value as a second target battery pack, and sending target information to a second battery management unit corresponding to the second target battery pack through a battery control unit so as to output a first control instruction according to the target information through the second battery management unit, wherein according to the first control instruction, a fixed end of a single-pole double-throw switch in the second target battery pack is controlled to be connected with a second movable end, so that the second target battery pack is in a short circuit state.
Optionally, after detecting the state of the battery module in the battery pack corresponding to the battery management unit by each battery management unit in the battery energy storage power supply system, the method further includes: if the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; the battery pack with the lowest voltage value is determined to be a third target battery pack, target information is sent to a third battery management unit corresponding to the third target battery pack through a battery control unit, a first control instruction is output through the third battery management unit according to the target information, and the fixed end of a single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
The device herein may be a server, PC, PAD, cell phone, etc.
The present application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with the method steps of: detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in the battery energy storage and power supply system; if the battery module in the first target battery pack is detected to have a fault, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
Optionally, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected to the second movable end according to the first control instruction so that the first target battery pack is in a short-circuit state, the method further includes: outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed; and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
Optionally, after controlling the stationary end of the single pole double throw switch in the first target battery pack to be connected to the second movable end according to the first control instruction so that the first target battery pack is in a short-circuit state, the method further includes: outputting a fault indication signal to a battery control unit in the battery energy storage power supply system through a first battery management unit, wherein the fault indication signal is used for representing fault information of a first target battery pack; the fault information of the first target battery pack is sent to the target object through the battery control unit, so that the fault of the first target battery pack is processed through the target object.
Optionally, after detecting the state of the battery module in the battery pack corresponding to the battery management unit by each battery management unit in the battery energy storage power supply system, the method further includes: if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; determining a battery pack with the highest voltage value as a second target battery pack, and sending target information to a second battery management unit corresponding to the second target battery pack through a battery control unit so as to output a first control instruction according to the target information through the second battery management unit, wherein according to the first control instruction, a fixed end of a single-pole double-throw switch in the second target battery pack is controlled to be connected with a second movable end, so that the second target battery pack is in a short circuit state.
Optionally, after detecting the state of the battery module in the battery pack corresponding to the battery management unit by each battery management unit in the battery energy storage power supply system, the method further includes: if the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack; the battery pack with the lowest voltage value is determined to be a third target battery pack, target information is sent to a third battery management unit corresponding to the third target battery pack through a battery control unit, a first control instruction is output through the third battery management unit according to the target information, and the fixed end of a single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that 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 phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (11)

1. A battery energy storage and power supply system, the battery energy storage and power supply system comprising: a plurality of battery packs connected in series, wherein the plurality of battery packs connected in series are used for providing voltage for a load, and each battery pack at least comprises:
a battery module;
the first end of the fuse is connected with the positive output end of the battery module, and the second end of the fuse is connected with the first movable end of the single-pole double-throw switch;
the single-pole double-throw switch is characterized in that a second movable end of the single-pole double-throw switch is connected with a negative input end of the battery module, a stationary end of the single-pole double-throw switch is connected with a negative output end of a battery pack adjacent to a current battery pack, and when a first target battery pack is detected to have a fault, the stationary end of the single-pole double-throw switch corresponding to the first target battery pack is controlled to be connected with the second movable end, so that the first target battery pack is in a short circuit state.
2. The battery energy storage and delivery system of claim 1, wherein each battery pack further comprises:
the battery management unit is used for outputting a target control instruction to the single-pole double-throw switch, controlling the fixed end of the single-pole double-throw switch to be connected with the first movable end through the target control instruction, or controlling the fixed end of the single-pole double-throw switch to be connected with the second movable end through the target control instruction, wherein the target control instruction is one of the following: the first control instruction and the second control instruction;
If the battery management unit outputs the first control instruction, controlling the fixed end of the single-pole double-throw switch to be connected with the second movable end; and if the battery management unit outputs the second control instruction, controlling the fixed end of the single-pole double-throw switch to be connected with the first movable end.
3. The battery energy storage and power supply system of claim 1, further comprising:
a battery control unit for monitoring the state of the battery module of each battery pack and for managing each battery management unit;
and the power converter is used for converting the output voltages of the plurality of battery packs connected in series to provide voltages for the load.
4. A control method of a battery energy storage and power supply system, characterized in that the control method of the battery energy storage and power supply system is applied to the battery energy storage and power supply system as claimed in any one of claims 1 to 3, and includes:
detecting the state of a battery module in a battery pack corresponding to each battery management unit through each battery management unit in a battery energy storage and power supply system;
if the battery module in the first target battery pack is detected to have a fault, outputting a first control instruction through a first battery management unit corresponding to the first target battery pack;
And controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the second movable end according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
5. The method of claim 4, wherein after controlling the stationary end of the single pole double throw switch in the first target battery pack to connect with the second stationary end in accordance with the first control command to place the first target battery pack in a shorted state, the method further comprises:
outputting a second control instruction through the first battery management unit if the failure of the battery module in the first target battery pack is detected to be processed;
and controlling the fixed end of the single-pole double-throw switch in the first target battery pack to be connected with the first movable end according to the second control instruction so as to enable the first target battery pack to be in a passage state.
6. The method of claim 4, wherein after controlling the stationary end of the single pole double throw switch in the first target battery pack to connect with the second stationary end in accordance with the first control command to place the first target battery pack in a shorted state, the method further comprises:
Outputting a fault indication signal to a battery control unit in the battery energy storage and power supply system through the first battery management unit, wherein the fault indication signal is used for representing fault information of the first target battery pack;
and sending the fault information of the first target battery pack to a target object through the battery control unit so as to process the fault of the first target battery pack through the target object.
7. The method of claim 4, wherein after detecting the status of the battery module in the battery pack corresponding to each battery management unit in the battery energy storage and power supply system by each battery management unit, the method further comprises:
if the battery energy storage power supply system is in a charging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack;
determining a battery pack with the highest voltage value as a second target battery pack, and sending target information to a second battery management unit corresponding to the second target battery pack through the battery control unit so as to output the first control instruction through the second battery management unit according to the target information, wherein the fixed end of a single-pole double-throw switch in the second target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the second target battery pack is in a short circuit state.
8. The method of claim 4, wherein after detecting the status of the battery module in the battery pack corresponding to each battery management unit in the battery energy storage and power supply system by each battery management unit, the method further comprises:
if the battery energy storage power supply system is in a discharging state, detecting the voltage value of each battery pack through a battery control unit in the battery energy storage power supply system to obtain the voltage value of each battery pack;
determining a battery pack with the lowest voltage value as a third target battery pack, and sending target information to a third battery management unit corresponding to the third target battery pack through the battery control unit so as to output the first control instruction through the third battery management unit according to the target information, wherein the fixed end of a single-pole double-throw switch in the third target battery pack is controlled to be connected with the second movable end according to the first control instruction, so that the third target battery pack is in a short circuit state.
9. A control device for a battery energy storage and power supply system, comprising:
the first detection unit is used for detecting the state of a battery module in a battery pack corresponding to each battery management unit in the battery energy storage and power supply system;
The first output unit is used for outputting a first control instruction through a first battery management unit corresponding to the first target battery pack if the fault of the battery module in the first target battery pack is detected;
and the first control unit is used for controlling the connection between the fixed end and the second movable end of the single-pole double-throw switch in the first target battery pack according to the first control instruction so as to enable the first target battery pack to be in a short circuit state.
10. A processor for running a program, wherein the program when run performs the method of controlling the battery power storage system of claim 4.
11. An electronic device comprising one or more processors and a memory for storing one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of controlling the battery power storage system of claim 4.
CN202310514672.3A 2023-05-06 2023-05-06 Battery energy storage power supply system, control method and device, processor and electronic equipment Pending CN116526624A (en)

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CN202310514672.3A CN116526624A (en) 2023-05-06 2023-05-06 Battery energy storage power supply system, control method and device, processor and electronic equipment

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