CN116131400B - Battery management method, device, equipment and medium for energy storage system - Google Patents

Battery management method, device, equipment and medium for energy storage system Download PDF

Info

Publication number
CN116131400B
CN116131400B CN202310041732.4A CN202310041732A CN116131400B CN 116131400 B CN116131400 B CN 116131400B CN 202310041732 A CN202310041732 A CN 202310041732A CN 116131400 B CN116131400 B CN 116131400B
Authority
CN
China
Prior art keywords
battery
battery pack
value
calculating
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310041732.4A
Other languages
Chinese (zh)
Other versions
CN116131400A (en
Inventor
范奎伟
覃见吉
张民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Ruisu Intelligent Technology Co ltd
Original Assignee
Guangzhou Ruisu Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Ruisu Intelligent Technology Co ltd filed Critical Guangzhou Ruisu Intelligent Technology Co ltd
Priority to CN202310041732.4A priority Critical patent/CN116131400B/en
Publication of CN116131400A publication Critical patent/CN116131400A/en
Application granted granted Critical
Publication of CN116131400B publication Critical patent/CN116131400B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H02J7/0014—Circuits for equalisation of charge between 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
    • H01M10/4207—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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • 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
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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

Landscapes

  • 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)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present application relates to the technical field of energy storage systems, and in particular, to a method, an apparatus, a device, and a medium for managing batteries of an energy storage system. A battery management method for an energy storage system is applied to a server and comprises the following steps: acquiring operation data of each battery in the energy storage system, wherein the operation data comprises the temperature, the residual electric quantity, the output voltage and the output current of the battery; calculating a discharge index of each battery based on the temperature and the residual electric quantity of each battery; calculating power consumption data of the load based on the output voltage and the output current of each battery; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack includes at least one battery cell. According to the application, the battery with good running state is selected to supply power for the load, so that the purpose of reducing the probability of battery failure is achieved, and the service life of the battery is prolonged.

Description

Battery management method, device, equipment and medium for energy storage system
Technical Field
The present application relates to the technical field of energy storage systems, and in particular, to a method, an apparatus, a device, and a medium for managing batteries of an energy storage system.
Background
The energy storage system includes a battery management system (BMS, battery Management System) and an energy storage converter system (PCS, power Control System). The basic task of energy storage systems is to overcome the temporal or local differences between energy supply and demand; under the condition of abundant electric energy, charging the energy storage system; and under the condition of electric energy shortage, the energy storage system is utilized to supply power to the outside.
Currently, in the operation process of an energy storage system, a battery management system monitors terminal voltage, temperature, charge and discharge current and total battery pack voltage of each battery in real time, so that safety faults of the current energy storage system are identified; and when the battery fails, corresponding safety treatment measures are taken. For example, measures such as sending out alarm information, stopping or controlling the energy storage system to stop and automatically recovering after the fault is relieved are taken to ensure that the energy storage system can safely operate.
In the related art, after the battery management system detects that the energy storage system fails, corresponding measures are taken, but the battery is damaged at this time, and even if corresponding processing measures are taken, the service life of the battery is also affected.
Disclosure of Invention
In order to prolong the service life of a battery in an energy storage system, the application provides a battery management method, a device, equipment and a medium for the energy storage system.
In a first aspect of the present application, there is provided a battery management method for an energy storage system, applied to a server, including: acquiring operation data of each battery in the energy storage system, wherein the operation data comprises the temperature, the residual electric quantity, the output voltage and the output current of the battery; calculating the discharge index of each battery based on the temperature and the residual electric quantity of each battery; calculating power consumption data of the load based on the output voltage and the output current of each battery; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack includes at least one battery cell.
By adopting the technical scheme, the server combines the operation data of each battery and the power consumption data of the load equipment to select the battery for supplying power to the load equipment; the battery for supplying power to the load equipment is ensured to be the battery with the best current running state, so that the condition that the battery with higher temperature and lower residual electric quantity is used for supplying power to the load equipment and the battery is damaged is avoided as far as possible; the battery can work in a good running state, so that the purpose of reducing the probability of battery failure is achieved, and the service life of the battery is prolonged.
In one possible implementation manner, the calculating unit calculates a discharge index of each battery based on the temperature and the remaining power of each battery; the method specifically comprises the following steps: calculating a first numerical value, wherein the first numerical value is the absolute value of the difference value between the temperature of each battery and the preset temperature; calculating a first index value based on the first value and a preset first value; calculating a second index value based on the residual electric quantity of each battery and a preset second value; and calculating the discharge index of each battery based on the first index value and the second index value.
By adopting the technical scheme, the server calculates the discharge index of the battery according to the current temperature and the residual electric quantity of the battery, and the obtained value can reflect the current running state of the battery.
In one possible embodiment, the energy storage system includes a first battery pack and a second battery pack; the target discharging battery pack is selected based on the discharging index of each battery and the electricity consumption data of the load; the method specifically comprises the following steps: calculating the output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack; comparing the output power of the first battery pack with the power consumption data of the load; and when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack.
By adopting the technical scheme, the server preferentially selects the battery with the largest discharge index in the energy storage system as the battery of the first battery pack, and calculates the output power of the first battery pack; adjusting the number of batteries in the first battery pack and the second battery pack according to the output power of the first battery pack and the power consumption of the load until a target discharge battery pack is selected; the electric energy output by the discharging battery pack is ensured to meet the use requirement of the load equipment, and the batteries in the discharging battery pack are all the batteries with the best running state in the current energy storage system.
In one possible embodiment, after the selecting the first battery pack as the target discharge battery pack, the method further includes: acquiring the residual electric quantity of each battery in the first battery pack in real time; comparing the residual electric quantity of each battery in the first battery pack with the preset electric quantity; when a first battery exists in the first battery pack, deleting the first battery from the first battery pack, and scheduling a second battery to the first battery pack; the first battery is a battery with the residual electric quantity equal to the preset electric quantity, and the second battery is a battery with the largest discharge index in the second battery pack; the number of the first batteries is the same as the number of the second batteries.
By adopting the technical scheme, after the server selects the target discharging battery pack to supply power for the load equipment, the residual electric quantity of each battery in the target discharging battery pack is monitored in real time, when the first battery with the electric quantity reaching the low electric quantity early warning value exists in the target discharging battery pack, the first battery is stopped to supply power for the load equipment, and the corresponding number of batteries are called from the second battery pack to supply power for the load equipment, so that the situation that the service life of the batteries is shortened due to overdischarge of the batteries in the energy storage system is avoided as much as possible.
In one possible embodiment, the method further comprises: acquiring charging data of the energy storage system; calculating a first number based on charging data of the energy storage system, the first number being a number of rechargeable batteries; counting a second numerical value, and comparing the first numerical value with the second numerical value; the second value is the number of cells in the second battery pack; if the first value is smaller than or equal to the second value, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack; and selecting a target rechargeable battery pack based on the charging priority of each battery in the second battery pack.
By adopting the technical scheme, the server preferably selects to charge the batteries which are in the idle state and have lower residual electric quantity, the discharge indexes of the batteries are increased, and the situation that the batteries in the energy storage system are charged and discharged at the same time is avoided as much as possible; when the server schedules the batteries in the energy storage system to supply power for the load again, the batteries in the idle state can be used as power supply batteries to supply power for load equipment; all batteries in the energy storage system can be in a recycling state, and the situations that the batteries lose activity and performance are reduced due to the fact that the batteries are in an idle state for a long time due to low discharge indexes are avoided as far as possible.
In one possible embodiment, when the first value is greater than the second value, the method further comprises: calculating a third value, wherein the third value is a difference value between the first value and the second value; calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery; and selecting the batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, wherein the number of the batteries to be charged is the same as the third numerical value.
By adopting the technical scheme, the server selects the battery to be charged from the first battery pack according to the output power and the residual electric quantity of each battery in the first battery pack.
In one possible embodiment, the method further comprises: acquiring charge and discharge data of each battery in the energy storage system; the charging and discharging data comprise charging time, charging quantity and total discharging quantity of each battery, wherein the charging time and the charging quantity of each battery are the charging time and the charging quantity of the last charging of each battery; calculating the cycle times of the batteries based on the total discharge amount of the batteries; calculating a charge value of each battery based on the charge time and the charge amount of each battery; calculating the wear value of each battery based on the cycle times of each battery and the charging value of each battery; if a third battery exists in each battery, sending alarm information comprising related information of the third battery to preset equipment; the third battery is a battery with a wear value greater than or equal to a preset value, and the related information comprises the cycle number and the charging value of the third battery.
Through adopting above-mentioned technical scheme, the server calculates the wearing degree of each battery through the charge-discharge data of each battery, and when the wearing degree of battery was higher, send alarm information to relevant staff to remind relevant staff to maintain or change the battery that wearing degree is higher, guarantee energy storage system's operation safety.
In a second aspect of the present application there is provided a battery management device for an energy storage system, the device being a server comprising: the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring operation data of each battery in the energy storage system, and the operation data comprise the temperature, the residual electric quantity, the output voltage and the output current of the battery; a processing unit for calculating a discharge index of each battery based on the temperature and the remaining power of each battery; calculating power consumption data of the load based on the output voltage and the output current of each battery; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack includes at least one battery cell.
In a possible embodiment, the processing unit is further configured to calculate a first value, where the first value is an absolute value of a difference between a temperature of each battery and a preset temperature; calculating a first index value based on the first value and a preset first value; calculating a second index value based on the residual electric quantity of each battery and a preset second value; and calculating the discharge index of each battery based on the first index value and the second index value.
In one possible embodiment, the energy storage system includes a first battery pack and a second battery pack; the processing unit is also used for calculating the output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack; comparing the output power of the first battery pack with the power consumption data of the load; and when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack.
In a possible implementation manner, the obtaining unit is further configured to obtain, in real time, a remaining power of each battery in the first battery pack; the processing unit is further used for comparing the residual electric quantity of each battery in the first battery pack with the preset electric quantity; when a first battery exists in the first battery pack, deleting the first battery from the first battery pack, and scheduling a second battery to the first battery pack; the first battery is a battery with the residual electric quantity equal to the preset electric quantity, and the second battery is a battery with the largest discharge index in the second battery pack; the number of the first batteries is the same as the number of the second batteries.
In a possible implementation manner, the acquiring unit is further configured to acquire charging data of the energy storage system; the processing unit is further used for calculating a first numerical value based on charging data of the energy storage system, wherein the first numerical value is the number of rechargeable batteries; counting a second numerical value, and comparing the first numerical value with the second numerical value; the second value is the number of cells in the second battery pack; if the first value is smaller than or equal to the second value, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack; and selecting a target rechargeable battery pack based on the charging priority of each battery in the second battery pack.
In a possible embodiment, when the first value is greater than the second value, the processing unit is further configured to calculate a third value, where the third value is a difference between the first value and the second value; calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery; and selecting the batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, wherein the number of the batteries to be charged is the same as the third numerical value.
In a possible embodiment, the apparatus further comprises a transmitting unit; the acquisition unit is also used for acquiring charge and discharge data of each battery in the energy storage system; the charging and discharging data comprise charging time, charging quantity and total discharging quantity of each battery, wherein the charging time and the charging quantity of each battery are the charging time and the charging quantity of the last charging of each battery; the processing unit is further used for calculating the cycle times of the batteries based on the total discharge amount of the batteries; calculating a charge value of each battery based on the charge time and the charge amount of each battery; calculating the wear value of each battery based on the cycle times of each battery and the charging value of each battery; the sending unit is used for sending alarm information comprising related information of the third battery to preset equipment if the third battery exists in the batteries; the third battery is a battery with a wear value greater than or equal to a preset value, and the related information comprises the cycle number and the charging value of the third battery.
In a third aspect the application provides an electronic device comprising a processor, a memory for storing instructions, a user interface and a network interface for communicating to other devices, the processor being arranged to execute the instructions stored in the memory to cause the electronic device to perform a method according to any of the first aspects of the application.
In a fourth aspect of the application a computer readable storage medium is provided, storing a computer program capable of being loaded by a processor and performing a method according to any of the first aspects of the application.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the server combines the operation data of each battery and the electricity consumption data of the load equipment to select the battery for supplying power to the load equipment; the battery for supplying power to the load equipment is ensured to be the battery with the best current running state, so that the condition that the battery with higher temperature and lower residual electric quantity is used for supplying power to the load equipment and the battery is damaged is avoided as far as possible; the battery is kept to work in a good running state, so that the aim of reducing the probability of battery failure is fulfilled, and the service life of the battery is prolonged;
2. the server preferably selects to charge the batteries which are in an idle state and have lower residual electric quantity, the discharge indexes of the batteries are increased, and the situation that the batteries in the energy storage system are charged and discharged at the same time is avoided as much as possible; when the server schedules the batteries in the energy storage system to supply power for the load again, the batteries in the idle state can be used as power supply batteries to supply power for load equipment; all batteries in the energy storage system can be in a recycling state, and the situations that the batteries lose activity and performance are reduced due to the fact that the batteries are in an idle state for a long time due to low discharge indexes are avoided as far as possible.
Drawings
FIG. 1 is a flow chart of a method of battery management for an energy storage system according to an embodiment of the present application;
FIG. 2 is a block diagram of a battery management device for an energy storage system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Reference numerals illustrate: 201. an acquisition unit; 202. a processing unit; 203. a transmitting unit; 300. an electronic device; 301. a processor; 302. a communication bus; 303. a user interface; 304. a network interface; 305. a memory.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments.
In describing embodiments of the present application, the word "for example" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "for example" in embodiments of the application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word "for example" and the like is intended to present related concepts in a concrete fashion. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature.
The application is suitable for the energy storage systems of distributed energy power stations such as wind power generation, photovoltaic power generation and the like. Taking a 10 MW-level energy storage system of a photovoltaic power station as an example, the photovoltaic array is used as a power supply to charge the energy storage system, and the energy storage system is used as the power supply to supply power for load equipment. 12 battery cells of 3.6V/100Ah form a battery module, 16 battery modules are connected in series to form 1 cluster of batteries, 4 clusters of batteries form 1 energy storage module, and a 10 MW-level energy storage system consists of 36 energy storage modules.
In order to prolong the service life of a battery in an energy storage system, the application provides a battery management method for the energy storage system, which is applied to a server, and referring to fig. 1, a method flowchart of the battery management method for the energy storage system provided by an embodiment of the application is shown, and the method comprises the following steps S101-S104.
Step S101: and acquiring operation data of each battery in the energy storage system, wherein the operation data comprises the temperature, the residual electric quantity, the output voltage and the output current of the battery.
In the steps, the BMS monitors the temperature, the residual electric quantity, the output voltage and the output current of each battery in the energy storage system in real time; the server acquires battery operation data measured by the BMS.
Step S102: the discharge index of each battery is calculated based on the temperature and the remaining power of each battery.
In the above steps, the server determines the discharge state of each battery by calculating the discharge index of each battery.
In one possible embodiment, the discharge index of each battery is calculated based on the temperature and the remaining power of each battery; the method specifically comprises the following steps: calculating a first numerical value, wherein the first numerical value is the absolute value of the difference value between the temperature of each battery and the preset temperature; calculating a first index value based on the first value and a preset first value; calculating a second index value based on the residual electric quantity of each battery and a preset second value; the discharge index of each battery is calculated based on the first index value and the second index value.
In the above example, the temperature and the remaining power of the battery are taken as influencing factors of the battery discharge index; the preset temperature is the optimal working temperature of the battery; the method comprises the steps of presetting a first numerical value to be the weight ratio of battery temperature in a battery discharge index, presetting a second numerical value to be the weight ratio of the residual electric quantity of a battery in the battery discharge index, and presetting the sum of the first numerical value and the second numerical value to be 1; and calculating a discharge index of the battery by combining the temperature, the residual electric quantity, the preset temperature, the preset first value and the preset second value of the battery, and reflecting the discharge state of the battery through the discharge index.
Battery discharge index x=100×a×m-b×n;
wherein a is the residual electric quantity of the battery; b is a first number; m is a preset second numerical value; n is a preset first value.
For example, the preset temperature is 20 degrees celsius, the preset first value is 50%, the preset second value is 50%, the temperature of the battery is 25 degrees celsius, and the residual electric quantity is 80%; the first value was calculated to be 5, the first index value was calculated to be 2.5, the second index value was calculated to be 40, and the battery discharge index X was calculated to be 37.5.
Step S103: based on the output voltage and output current of each battery, electricity consumption data of the load is calculated.
In the above example, the server calculates the output power of each battery based on the output voltage and the output current of each battery; the sum of the output powers of the respective batteries is calculated as the electricity consumption data of the load.
Step S104: selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack includes at least one battery cell.
In one possible embodiment, an energy storage system includes a first battery pack and a second battery pack; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the method specifically comprises the following steps: calculating the output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack; comparing the output power of the first battery pack with the power consumption data of the load; and when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack.
In the above example, the server divides the batteries in the energy storage system into a first battery pack and a second battery pack; the first battery pack is a discharge battery pack, the second battery pack is an idle battery pack, and the discharge indexes of the batteries in the first battery pack are all larger than those of the batteries in the second battery pack; calculating the output power of the first battery pack; and adjusting the quantity of the batteries in the first battery pack and the second battery pack according to the output power of the first battery pack and the power consumption of the load until the target discharge battery pack is selected.
The specific steps of selecting the target discharge battery pack are as follows: step 1, calculating the output power of a first battery pack; step 2, comparing the output power of the first battery pack with the power of the load, and if the output power of the first battery pack is greater than or equal to the power of the load, executing step 3; if the output power of the first battery pack is smaller than the power consumption of the load, executing the step 4; step 3, selecting the first battery pack as a target discharge battery pack; step 4, dispatching the battery with the largest discharge index in the second battery pack to the first battery pack, and calculating the output power of the first battery pack again; 5. repeating the steps 2-4.
It should be noted that only one battery with the largest discharge index exists in the first battery pack at the initial time.
In one possible embodiment, after selecting the first battery pack as the target discharge battery pack, the method further comprises: acquiring the residual electric quantity of each battery in the first battery pack in real time; comparing the residual electric quantity of each battery in the first battery pack with the preset electric quantity; when the first battery exists in the first battery pack, deleting the first battery from the first battery pack, and dispatching the second battery to the first battery pack; the first battery is a battery with the residual electric quantity equal to the preset electric quantity, and the second battery is a battery with the largest discharge index in the second battery pack; the number of first cells is the same as the number of second cells.
In the above example, the preset power is a low power warning value of the battery; the battery life can be influenced when the residual electric quantity of the battery is lower than the low electric quantity early warning value. The server monitors the residual electric quantity of each battery in the first battery pack in real time; and when the residual electric quantity in the first battery pack reaches the low electric quantity predicted value, deleting the battery from the first battery pack, and dispatching the battery with the largest discharge index in the second battery pack to the first battery pack.
For example, the preset power is 20%. When the server detects that the first battery with the electric quantity equal to 20% exists in the first battery pack, a power supply loop of the first battery is short-circuited, so that the first battery stops supplying power; wherein the first battery comprises at least one battery; and the power supply loop of the second battery in the second battery pack is conducted so that the second battery starts to supply power; wherein the number of the first batteries is the same as the number of the second batteries; that is, if n batteries are deleted from the first battery pack, then n batteries are scheduled from the second battery pack to the first battery pack.
It should be noted that, in the first battery pack calculated when the target discharge battery pack is selected, the remaining power of each battery is larger than the low power early warning value of the battery; if the residual electric quantity of the battery in the first battery pack is smaller than or equal to the low electric quantity early warning value, the server acquires the residual electric quantity of each battery in the second battery pack in real time; when the server detects that the battery with the residual electric quantity larger than the low electric quantity early warning value exists in the second battery pack, the discharging battery scheduling step is started to be executed; and if the residual electric quantity of the batteries in the second battery pack is smaller than or equal to the low electric quantity early warning value, stopping executing the discharging battery dispatching step. In the battery scheduling step, the number of batteries deleted from the first battery pack is always the same as the number of batteries scheduled from the second battery pack to the first battery pack.
In one possible embodiment, the method further comprises: acquiring charging data of an energy storage system; calculating a first number, which is the number of rechargeable batteries, based on charging data of the energy storage system; counting a second numerical value, and comparing the first numerical value with the second numerical value; the second value is the number of cells in the second battery pack; if the first value is smaller than or equal to the second value, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack; a target rechargeable battery pack is selected based on the charging priority of each battery in the second battery pack.
In the above example, the server obtains the charging data of the energy storage system, that is, obtains the output power of the photovoltaic array; calculating the ratio of the output power of the photovoltaic array to the charging power of the battery to obtain the number of rechargeable batteries; counting the number of batteries of the second battery pack; and if the number of the rechargeable batteries is smaller than or equal to the number of the batteries of the second battery pack, representing that the number of the rechargeable batteries is smaller than or equal to the number of the batteries in the idle state, selecting a target rechargeable battery pack from the second battery pack.
The smaller the remaining power of the battery, the higher the charging priority of the battery. If all the batteries in the energy storage system are the same in model, the rated charging power of the batteries is the same, and the rated charging power of any battery is selected to calculate the number of rechargeable batteries; if the energy storage system has multiple types of batteries, the rated charging power of the batteries is different, the average value of the rated charging power of the batteries is calculated, and the average value is used as the rated charging power of each battery in the energy storage system to calculate the number of rechargeable batteries.
For example, the batteries in the second battery pack are ordered according to the order of the remaining power from low to high as the charging priority order of the batteries in the second battery pack; if the number of rechargeable batteries is m, the first m batteries of the list are selected to form the target rechargeable battery pack.
In one possible embodiment, when the first value is greater than the second value, the method further comprises: calculating a third value, wherein the third value is a difference value between the first value and the second value; calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery; and selecting the batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, wherein the number of the batteries to be charged is the same as the third numerical value.
In the above example, when the number of rechargeable batteries is greater than the number of batteries of the second battery pack, it is reflected that the number of rechargeable batteries is greater than the number of batteries in an idle state, all the batteries in the second battery pack are selected as the to-be-charged batteries, and the to-be-charged batteries are selected from the first battery pack, and the target rechargeable battery pack is composed of the to-be-charged batteries in the first battery pack and the to-be-charged batteries in the second battery pack. The number of batteries of the target rechargeable battery pack is the same as the number of batteries of the rechargeable battery.
When a battery pack to be charged is selected from the first battery pack, firstly calculating the output power of each battery in the first battery pack; comparing the output power of each battery with the charging power of each battery, and screening out the battery with the output power smaller than the charging power as a battery to be selected; sequencing all batteries in the batteries to be selected according to the sequence from low to high of the residual electric quantity, and taking the sequencing as the charging priority sequence of all the batteries in the batteries to be selected; if the third value is z, selecting the first z batteries of the battery list to be selected as the batteries to be charged; the target rechargeable battery pack consists of all the batteries of the second battery pack and the to-be-charged battery of the first battery pack.
When the output power of the battery is smaller than the charging power, part of the output power of the power supply is directly supplied to the power load, and the other part of the output power of the power supply charges the battery; the battery is in a charged state and does not need to supply power to the electric load.
It should be noted that, if no battery with output power smaller than charging power exists in the first battery pack, the battery to be charged is directly selected according to the remaining power of each battery in the first battery pack; if the number of the batteries to be selected is smaller than the third value, all the batteries to be selected are selected as the batteries to be charged, and the difference value between the third value and the number of the batteries to be selected is calculated; and selecting the to-be-charged batteries with the number and the third value corresponding to the difference value of the number of the to-be-selected batteries from the remaining batteries of the first battery pack according to the remaining capacity of the batteries.
In one possible embodiment, the method further comprises: acquiring charge and discharge data of each battery in an energy storage system; the charging and discharging data comprise the charging time, the charging amount and the total discharging amount of each battery, wherein the charging time and the charging amount of each battery are the charging time and the charging amount of the last charging of each battery; calculating the cycle times of each battery based on the total discharge amount of each battery; calculating a charge value of each battery based on the charge time and the charge amount of each battery; calculating the wear value of each battery based on the cycle number of each battery and the charging value of each battery; if a third battery exists in each battery, sending alarm information comprising related information of the third battery to preset equipment; the third battery is a battery with a wear value greater than or equal to a preset value, and the related information comprises the cycle number and the charging value of the third battery.
In the above example, the server calculates the wear value of each battery according to the charge and discharge data of each battery in the energy storage system, and determines the wear degree of each battery according to the wear value of the battery; when the battery wear level is high, a prompt message is sent to preset equipment, and the preset equipment can be a mobile terminal of a relevant worker so as to remind the relevant worker to repair or replace the battery with the high wear level.
The cycle number A of the battery is the number of times that the battery releases 100% of electric quantity;
battery charge value b= (a/B)/(a) 1 /b 1 ) The method comprises the steps of carrying out a first treatment on the surface of the Wherein a is 1 Charge amount for last charge of battery, b 1 Charging time for last charging of the battery; a is 1, b is the time required for charging 100% of the electric quantity when the battery is just started to be put into use; the unit of battery charging time is minutes, and the corresponding value b of each battery is stored in a database. When the charging state of the battery is the charging state of the load, the charging state of the battery is the charging state of the load.
The wear value y=1/((a) 1 -A)/A 1 +b); wherein A is 1 Is the recycling times of the battery.
The preset value is 1; when the wear value of the battery is greater than or equal to 1; the server sends related prompt information of a third battery to the preset device, wherein the third battery comprises at least one battery.
After the server calculates the wear value of each battery, the wear value of each battery is stored in the related operation data of each battery; in calculating the discharge index of the battery, the wear value of the battery can also be used as an influencing factor of the discharge index of the battery.
For example, the discharge index x=100×a×m-b×n-c×10×h of the battery;
Where c is the wear value of the battery, m, n and h are the weight ratio of each value in the battery discharge index, m+n+h=1.
Referring to fig. 2, a schematic block diagram of a battery management device for an energy storage system according to an embodiment of the present application is shown, where the device is a server, and includes: an obtaining unit 201, configured to obtain operation data of each battery in the energy storage system, where the operation data includes a temperature, a remaining power, an output voltage, and an output current of the battery; a processing unit 202 for calculating a discharge index of each battery based on the temperature and the remaining power of each battery; calculating power consumption data of the load based on the output voltage and the output current of each battery; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack includes at least one battery cell.
In a possible embodiment, the processing unit 202 is further configured to calculate a first value, where the first value is an absolute value of a difference between the temperature of each battery and a preset temperature; calculating a first index value based on the first value and a preset first value; calculating a second index value based on the residual electric quantity of each battery and a preset second value; the discharge index of each battery is calculated based on the first index value and the second index value.
In one possible embodiment, an energy storage system includes a first battery pack and a second battery pack; the processing unit 202 is further configured to calculate an output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack; comparing the output power of the first battery pack with the power consumption data of the load; and when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack.
In a possible implementation manner, the obtaining unit 201 is further configured to obtain, in real time, a remaining power of each battery in the first battery pack; the processing unit 202 is further configured to compare the remaining power of each battery in the first battery pack with a preset power; when the first battery exists in the first battery pack, deleting the first battery from the first battery pack, and dispatching the second battery to the first battery pack; the first battery is a battery with the residual electric quantity equal to the preset electric quantity, and the second battery is a battery with the largest discharge index in the second battery pack; the number of first cells is the same as the number of second cells.
In a possible implementation manner, the obtaining unit 201 is further configured to obtain charging data of the energy storage system; the processing unit 202 is further configured to calculate a first value based on charging data of the energy storage system, where the first value is a number of rechargeable batteries; counting a second numerical value, and comparing the first numerical value with the second numerical value; the second value is the number of cells in the second battery pack; if the first value is smaller than or equal to the second value, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack; a target rechargeable battery pack is selected based on the charging priority of each battery in the second battery pack.
In a possible embodiment, when the first value is greater than the second value, the processing unit 202 is further configured to calculate a third value, where the third value is a difference between the first value and the second value; calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery; and selecting the batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, wherein the number of the batteries to be charged is the same as the third numerical value.
In a possible embodiment, the apparatus further comprises a transmitting unit 203; the acquiring unit 201 is further configured to acquire charge and discharge data of each battery in the energy storage system; the charging and discharging data comprise the charging time, the charging amount and the total discharging amount of each battery, wherein the charging time and the charging amount of each battery are the charging time and the charging amount of the last charging of each battery; the processing unit 202 is further configured to calculate the cycle number of each battery based on the total discharge amount of each battery; calculating a charge value of each battery based on the charge time and the charge amount of each battery; calculating the wear value of each battery based on the cycle number of each battery and the charging value of each battery; a sending unit 203, configured to send alarm information including information related to a third battery to a preset device if the third battery exists in each battery; the third battery is a battery with a wear value greater than or equal to a preset value, and the related information comprises the cycle number and the charging value of the third battery.
Referring to fig. 3, a schematic structural diagram of an electronic device is provided in an embodiment of the present application. As shown in fig. 3, the electronic device 300 may include: at least one processor 301, at least one network interface 304, a user interface 303, a memory 305, at least one communication bus 302.
Wherein the communication bus 302 is used to enable connected communication between these components.
The user interface 303 may include a Display screen (Display), a Camera (Camera), and the optional user interface 303 may further include a standard wired interface, and a wireless interface.
The network interface 304 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
Wherein the processor 301 may include one or more processing cores. The processor 301 utilizes various interfaces and lines to connect various portions of the overall server, perform various functions of the server and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 305, and invoking data stored in the memory 305. Alternatively, the processor 301 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 301 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 301 and may be implemented by a single chip.
The Memory 305 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 305 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 305 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 305 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-described respective method embodiments, etc.; the storage data area may store data or the like involved in the above respective method embodiments. Memory 305 may also optionally be at least one storage device located remotely from the aforementioned processor 301. As shown in fig. 3, an operating system, a network communication module, a user interface module, and an application program of a battery management method for an energy storage system may be included in the memory 305 as a computer storage medium.
In the electronic device 300 shown in fig. 3, the user interface 303 is mainly used for providing an input interface for a user, and acquiring data input by the user; and processor 301 may be configured to invoke an application program in memory 305 that stores a battery management method for an energy storage system, which when executed by one or more processors, causes an electronic device to perform the method as described in one or more of the embodiments above.
An electronic device readable storage medium storing instructions. When executed by one or more processors, cause an electronic device to perform the method as described in one or more of the embodiments above.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all of the preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.
The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.

Claims (6)

1. A battery management method for an energy storage system, applied to a server, comprising:
acquiring operation data of each battery in the energy storage system, wherein the operation data comprises the temperature, the residual electric quantity, the output voltage and the output current of the battery;
calculating the discharge index of each battery based on the temperature and the residual electric quantity of each battery;
calculating power consumption data of the load based on the output voltage and the output current of each battery;
selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack comprises at least one battery;
the energy storage system comprises a first battery pack and a second battery pack; the target discharging battery pack is selected based on the discharging index of each battery and the electricity consumption data of the load; the method specifically comprises the following steps:
calculating the output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack;
comparing the output power of the first battery pack with the power consumption data of the load;
when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack;
Acquiring charging data of the energy storage system;
calculating a first number based on charging data of the energy storage system, the first number being a number of rechargeable batteries;
counting a second quantity, and comparing the first quantity with the second quantity; the second number is the number of cells in the second battery pack;
if the first number is smaller than or equal to the second number, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack;
selecting a target rechargeable battery pack based on the charging priority of each battery in the second battery pack;
when the first number is greater than the second number, the method further comprises:
calculating a third quantity, the third quantity being a difference between the first quantity and the second quantity;
calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery;
selecting batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, wherein the number of the batteries to be charged is the same as the third number;
Battery discharge index x=100×a×m-b×n;
wherein a is the residual electric quantity of the battery; b is a first numerical value, wherein the first numerical value is the absolute value of the difference value between the temperature of each battery and the preset temperature; m is a preset second value, wherein the preset second value is the weight ratio of the residual electric quantity of the battery in the battery discharge index; n is a preset first numerical value which is the weight ratio of the battery temperature in the battery discharge index;
calculating the discharge index of each battery based on the temperature and the residual electric quantity of each battery; the method specifically comprises the following steps:
calculating the first value;
calculating a first index value based on the first value and the preset first value;
calculating a second index value based on the residual electric quantity of each battery and the preset second value;
and calculating the discharge index of each battery based on the first index value and the second index value.
2. The battery management method for an energy storage system of claim 1, wherein after said selecting said first battery pack as a target discharge battery pack, said method further comprises:
acquiring the residual electric quantity of each battery in the first battery pack in real time;
Comparing the residual electric quantity of each battery in the first battery pack with the preset electric quantity;
when a first battery exists in the first battery pack, deleting the first battery from the first battery pack, and scheduling a second battery to the first battery pack; the first battery is a battery with the residual electric quantity equal to the preset electric quantity, and the second battery is a battery with the largest discharge index in the second battery pack; the number of the first batteries is the same as the number of the second batteries.
3. The method of claim 1, further comprising:
acquiring charge and discharge data of each battery in the energy storage system; the charging and discharging data comprise charging time, charging quantity and total discharging quantity of each battery, wherein the charging time and the charging quantity of each battery are the charging time and the charging quantity of the last charging of each battery;
calculating the cycle times of the batteries based on the total discharge amount of the batteries;
calculating a charge value of each battery based on the charge time and the charge amount of each battery;
calculating the wear value of each battery based on the cycle times of each battery and the charging value of each battery;
If a third battery exists in each battery, sending alarm information comprising related information of the third battery to preset equipment; the third battery is a battery with a wear value greater than or equal to a preset value, and the related information comprises the cycle number and the charging value of the third battery.
4. A battery management device for an energy storage system, the device being a server comprising:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring operation data of each battery in the energy storage system, and the operation data comprise the temperature, the residual electric quantity, the output voltage and the output current of the battery;
a processing unit for calculating a discharge index of each battery based on the temperature and the remaining power of each battery; calculating power consumption data of the load based on the output voltage and the output current of each battery; selecting a target discharge battery pack based on the discharge index of each battery and the electricity consumption data of the load; the target discharge battery pack comprises at least one battery;
the processing unit is also used for the energy storage system to comprise a first battery pack and a second battery pack; the target discharging battery pack is selected based on the discharging index of each battery and the electricity consumption data of the load; the method specifically comprises the following steps:
Calculating the output power of the first battery pack; the discharge indexes of the batteries in the first battery pack are all larger than the discharge indexes of the batteries in the second battery pack;
the processing unit is also used for comparing the output power of the first battery pack with the power consumption data of the load; when the output power of the first battery pack is greater than or equal to the electricity consumption data of the load, selecting the first battery pack as a target discharge battery pack;
the acquisition unit is also used for acquiring charging data of the energy storage system;
the processing unit is further used for calculating a first quantity based on the charging data of the energy storage system, wherein the first quantity is the quantity of the rechargeable batteries;
the processing unit is also used for counting a second quantity and comparing the first quantity with the second quantity; the second number is the number of cells in the second battery pack; if the first number is smaller than or equal to the second number, determining the charging priority of each battery in the second battery pack based on the residual electric quantity of each battery in the second battery pack;
the processing unit is further used for selecting a target rechargeable battery pack based on the charging priority of each battery in the second battery pack;
The processing unit is further configured to, when the first number is greater than the second number, further include: calculating a third quantity, the third quantity being a difference between the first quantity and the second quantity;
the processing unit is also used for calculating the output power of each battery in the first battery pack based on the output voltage and the output current of each battery;
the processing unit is further used for selecting batteries to be charged from the first battery pack based on the output power and the residual electric quantity of each battery in the first battery pack, and the number of the batteries to be charged is the same as the third number;
battery discharge index x=100×a×m-b×n;
wherein a is the residual electric quantity of the battery; b is a first numerical value, wherein the first numerical value is the absolute value of the difference value between the temperature of each battery and the preset temperature; m is a preset second value, wherein the preset second value is the weight ratio of the residual electric quantity of the battery in the battery discharge index; n is a preset first numerical value which is the weight ratio of the battery temperature in the battery discharge index;
the processing unit is also used for calculating the discharge index of each battery based on the temperature and the residual electric quantity of each battery; the method specifically comprises the following steps:
The processing unit is also used for calculating the first numerical value;
the processing unit is further used for calculating a first index value based on the first value and the preset first value;
the processing unit is further used for calculating a second index value based on the residual electric quantity of each battery and the preset second value;
and the processing unit is also used for calculating the discharge index of each battery cell based on the first index value and the second index value.
5. An electronic device comprising a processor, a memory, a user interface, and a network interface, the memory for storing instructions, the user interface and the network interface for communicating to other devices, the processor for executing the instructions stored in the memory to cause the electronic device to perform the method of any of claims 1-3.
6. A computer readable storage medium, characterized in that it stores a computer program that can be loaded by a processor and that performs the method according to any of claims 1-3.
CN202310041732.4A 2023-01-11 2023-01-11 Battery management method, device, equipment and medium for energy storage system Active CN116131400B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310041732.4A CN116131400B (en) 2023-01-11 2023-01-11 Battery management method, device, equipment and medium for energy storage system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310041732.4A CN116131400B (en) 2023-01-11 2023-01-11 Battery management method, device, equipment and medium for energy storage system

Publications (2)

Publication Number Publication Date
CN116131400A CN116131400A (en) 2023-05-16
CN116131400B true CN116131400B (en) 2023-10-20

Family

ID=86302337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310041732.4A Active CN116131400B (en) 2023-01-11 2023-01-11 Battery management method, device, equipment and medium for energy storage system

Country Status (1)

Country Link
CN (1) CN116131400B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117277375A (en) * 2023-09-23 2023-12-22 广东永光新能源科技有限公司 Energy distribution method and device for combined energy storage system and electronic equipment
CN118042676A (en) * 2024-02-05 2024-05-14 东莞市倍祺电子科技有限公司 LED driving power supply load detection method, system, equipment and medium

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201138266A (en) * 2010-04-30 2011-11-01 Simplo Technology Co Ltd A method for discharging a battery apparatus
CN105871036A (en) * 2016-06-01 2016-08-17 先驱智能机械（深圳）有限公司 Battery system and power consuming equipment with same
CN106183857A (en) * 2016-08-02 2016-12-07 威马中德汽车科技成都有限公司 A kind of dual battery system double cell cycle-index control method and system
CN106356938A (en) * 2016-09-27 2017-01-25 阳光电源股份有限公司 Hybrid energy storage system, as well as charging method and device for same
CN106972583A (en) * 2017-06-08 2017-07-21 安徽康力节能电器科技有限公司 A kind of battery set charge/discharge control system
CN106992325A (en) * 2016-09-18 2017-07-28 陈嘉贤 Battery module charge/discharge control method and battery system
CN107561447A (en) * 2017-07-18 2018-01-09 芜湖赛宝信息产业技术研究院有限公司 One kind is used for new-energy automobile power accumulator life detecting method
CN109256834A (en) * 2018-10-12 2019-01-22 华南理工大学 Battery pack active equalization method based on cell health state and state-of-charge
CN110571887A (en) * 2019-09-23 2019-12-13 Oppo（重庆）智能科技有限公司 Battery selection method and device, storage medium and electronic equipment
CN111993953A (en) * 2020-08-27 2020-11-27 安徽江淮汽车集团股份有限公司 Battery control method, power automobile and readable storage medium
CN113572238A (en) * 2021-08-11 2021-10-29 广东工业大学 Parallel lithium battery loss balancing method, device and system
CN113659681A (en) * 2021-08-19 2021-11-16 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) Slave control module, battery management system, method and storage medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014045530A (en) * 2012-08-24 2014-03-13 Sony Corp Electronic device system and battery pack

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201138266A (en) * 2010-04-30 2011-11-01 Simplo Technology Co Ltd A method for discharging a battery apparatus
CN105871036A (en) * 2016-06-01 2016-08-17 先驱智能机械（深圳）有限公司 Battery system and power consuming equipment with same
CN106183857A (en) * 2016-08-02 2016-12-07 威马中德汽车科技成都有限公司 A kind of dual battery system double cell cycle-index control method and system
CN106992325A (en) * 2016-09-18 2017-07-28 陈嘉贤 Battery module charge/discharge control method and battery system
CN106356938A (en) * 2016-09-27 2017-01-25 阳光电源股份有限公司 Hybrid energy storage system, as well as charging method and device for same
CN106972583A (en) * 2017-06-08 2017-07-21 安徽康力节能电器科技有限公司 A kind of battery set charge/discharge control system
CN107561447A (en) * 2017-07-18 2018-01-09 芜湖赛宝信息产业技术研究院有限公司 One kind is used for new-energy automobile power accumulator life detecting method
CN109256834A (en) * 2018-10-12 2019-01-22 华南理工大学 Battery pack active equalization method based on cell health state and state-of-charge
CN110571887A (en) * 2019-09-23 2019-12-13 Oppo（重庆）智能科技有限公司 Battery selection method and device, storage medium and electronic equipment
CN111993953A (en) * 2020-08-27 2020-11-27 安徽江淮汽车集团股份有限公司 Battery control method, power automobile and readable storage medium
CN113572238A (en) * 2021-08-11 2021-10-29 广东工业大学 Parallel lithium battery loss balancing method, device and system
CN113659681A (en) * 2021-08-19 2021-11-16 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) Slave control module, battery management system, method and storage medium

Also Published As

Publication number Publication date
CN116131400A (en) 2023-05-16

Similar Documents

Publication Publication Date Title
CN116131400B (en) Battery management method, device, equipment and medium for energy storage system
US8884579B2 (en) Storage battery management system
CN101359840B (en) Battery charger, secondary battery unit and electric apparatus equipped therewith
US20160241031A1 (en) Dynamic probability-based power outage management system
JP6590762B2 (en) Power supply system
US20130245850A1 (en) Electric power supply-and-demand control apparatus
US9209629B2 (en) Charge-discharge control device, charge-discharge control system, and computer program product
CN112531828A (en) Electrochemical energy storage power station BMS cooperative control system and method
CN106026151B (en) Scheduling method and device for electric vehicle battery storage and replacement station
CN104104118A (en) Intelligent battery connection system and related control method
JP2018068076A (en) Storage battery control system and power supply system
CN112819275A (en) Intelligent device and method for regulating power peak valley by user participating in power distribution network
CN107768748A (en) Communication base station moves energy scheduling method and its scheduling system
CN207677504U (en) Communication base station moves energy source dispatch system
CN117335457A (en) Processing method and device based on optical storage micro-grid system
KR101474296B1 (en) Energy storage system for power plant and the control method thereof
CN117293878A (en) Micro-grid-based energy scheduling method and device, electronic equipment and storage medium
CN109193724B (en) Intelligent base station backup energy storage power supply and control method
CN109782178A (en) A kind of battery core Rong Fangfa and core capacitance device
CN115549247A (en) Mixed power management method and system
KR20190130859A (en) ESS equipped with PCS with integrated PMS and Operation method
CN115102187A (en) Island microgrid management system and energy management method thereof
CN114938066A (en) Data center power supply system and method
CN114123430A (en) Intelligent grouping management device powered by multi-branch battery pack and control method
RU119939U1 (en) SYSTEM FOR MONITORING AND DETERMINING THE BATTERY SERVICE TIME

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant