WO2019237829A1 - 一种电池系统及电池健康状态的检测方法 - Google Patents

一种电池系统及电池健康状态的检测方法 Download PDF

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Publication number
WO2019237829A1
WO2019237829A1 PCT/CN2019/083432 CN2019083432W WO2019237829A1 WO 2019237829 A1 WO2019237829 A1 WO 2019237829A1 CN 2019083432 W CN2019083432 W CN 2019083432W WO 2019237829 A1 WO2019237829 A1 WO 2019237829A1
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Prior art keywords
battery
state
charge
charging
battery pack
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PCT/CN2019/083432
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English (en)
French (fr)
Inventor
钟正
冯东
张建业
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19818968.0A priority Critical patent/EP3796509A4/en
Publication of WO2019237829A1 publication Critical patent/WO2019237829A1/zh
Priority to US17/119,351 priority patent/US11967848B2/en

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    • 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
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • 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
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/005—Detection of state of health [SOH]
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte 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
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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
    • 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

Definitions

  • the present application relates to the field of computer technology, and in particular, to a battery system and a method for detecting a battery health state.
  • lithium-ion batteries have excellent energy storage capabilities, they have been widely used in mobile terminals, computer room equipment, and medical equipment.
  • the state of health (SOH) of lithium-ion batteries is an important parameter that reflects the performance of lithium-ion batteries.
  • the health status of a battery is defined as a percentage of the battery's current capacity and the factory capacity. If the health status of the battery is lower than the preset threshold, it means that the battery is no longer working properly and needs to be replaced.
  • multiple parallel lithium-ion batteries are generally used as backup power for the computer room.
  • the method for detecting the health status of the lithium-ion battery is: The multiple parallel lithium-ion batteries provide power to the target power supply object.
  • the health status of the multiple parallel lithium-ion batteries is calculated according to the power supply current and the power supply time. If the calculated health status is lower than a preset threshold, it means that the multiple lithium-ion batteries cannot normally complete the power supply work, and the multiple lithium-ion batteries need to be replaced. In this way, there may be cases where some of the plurality of lithium-ion batteries can work normally and are replaced.
  • the embodiments of the present application provide a battery system and a battery health state detection method, which can detect the health state of each battery module in a plurality of battery modules, and improve the accuracy of detecting the battery health state.
  • an embodiment of the present application provides a battery system.
  • the battery system includes a processing module and multiple battery modules.
  • Each of the multiple battery modules includes a battery management system and is managed by the battery.
  • the battery pack controlled by the system wherein: the processing module is used to control the battery packs of each of the plurality of battery modules to perform discharge and charge operations in turn; the first battery is removed from the plurality of battery modules The sum of the power of the battery packs of the other battery modules of the module is higher than the power required by the target power supply object, and the first battery module is any one of the plurality of battery modules;
  • a battery management system for recording a target time where the target time is a duration of discharge of the battery pack in the first battery module, or a duration of charging of the battery pack in the first battery module, or For the duration of discharge and charge duration of the battery pack in the first battery module; the battery management system in the first battery module or the process Means for the state of health of the battery module in the first cell of the packet is determined according to the target time.
  • the processing module controls each battery module of the multiple battery modules to perform discharge and charge operations in turn, and then determines the health status of each battery module according to the target time, and can detect the multiple battery modules in order.
  • the health status of each module improves the accuracy of detecting the health status of the battery.
  • the sum of the power of the battery packs of the other battery modules except for any one of the plurality of battery modules is higher than the power required by the target power supply object, which can ensure that any one of the plurality of battery modules has a battery module
  • other battery modules except the one battery module can normally provide power to the target power supply object, thereby avoiding the problem that the target power supply object cannot be provided with sufficient power during the battery health status detection process.
  • the battery system is a backup power source of a first power source; among the plurality of battery modules, one of the plurality of battery modules is performing a discharging and charging operation.
  • Other battery modules are used to supply power to the target power supply object when the first power source cannot supply power to the target power supply object. In this way, if a battery module performs discharging and charging operations, the multiple battery modules are required to supply power to the target power supply object.
  • the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • the processing module is configured to control each battery in the multiple battery modules.
  • the battery packs of the modules perform the discharging and charging operations in turn.
  • the processing module is configured to send the first instruction information to the battery management system of each of the plurality of battery modules in turn.
  • An instruction message is used to instruct the battery module to discharge and charge; the battery management system of each battery module is used to control the battery pack of each battery module to perform discharge according to the received first instruction information And charging operation.
  • the processing module can send the first instruction information to the battery management system of each of the plurality of battery modules in turn to instruct the battery module to discharge and charge, without manually controlling the switching of the detected battery module. It can improve the efficiency of detecting the health status of multiple battery modules.
  • the battery packs of the battery modules alternately perform the operation of first discharging and then charging, so that the battery module that has detected the health status has sufficient power as a backup battery, and the health status of the other battery modules is checked.
  • the battery module that has detected the health status and the battery module that has not been detected can be used together as a backup power source to provide sufficient power for the target power supply object.
  • the discharge current is Setting the discharge current and the charging current as a preset charging current; and determining the health status of the battery pack in the first battery module according to the target time is specifically: according to the duration of discharge according to the preset discharge current Determining a first health state of the battery pack in the first battery module; determining a second health state of the battery pack in the first battery module according to a duration of charging according to the preset charging current; and according to the first A health state and the second health state determine the health state of the battery pack in the first battery module.
  • the average value of the first health state and the second health state is taken as the health state of the battery pack in the first battery module, and the battery pack can be comprehensively considered for charging. 3.
  • the battery capacity during discharge improves the accuracy of detecting the health status of the battery.
  • the discharge current is Setting the discharge current and the charging current as a preset charging current; and determining the health status of the battery pack in the first battery module according to the target time is specifically: according to the duration of discharge according to the preset discharge current , The first state of charge and the second state of charge determine a third health state of the battery pack in the first battery module, and the first state of charge is a state of charge before the battery pack is not discharged.
  • the second state of charge is the state of charge after the battery pack is discharged until the cut-off voltage and before charging is not performed; according to the duration of charging according to the preset charging current, the second state of charge
  • a third state of charge determines a fourth health state of the battery pack in the first battery module, and the third state of charge is a state of charge after the battery pack is fully charged; according to the third Healthy The health status and the fourth health status determine the health status of the battery pack in the first battery module.
  • the average value of the third health state and the fourth health state is taken as the health state of the battery pack in the first battery module, and the battery pack can be comprehensively considered for charging
  • the battery capacity and state of charge during discharge further improve the accuracy of detecting the health status of the battery.
  • the processing module is configured to determine the first according to the target time.
  • the health status of the battery pack in the battery module is specifically: receiving the target time sent by the battery management system in the first battery module; and determining the health of the battery pack in the first battery module according to the target time status.
  • an embodiment of the present application provides a battery module.
  • the battery module is one of a plurality of battery modules included in a battery system.
  • the battery module includes a battery management system and is controlled by the battery management system.
  • the battery pack wherein the battery management system is configured to control the battery pack to perform discharging and charging operations according to first instruction information sent by a processing module in the battery system, and the first detection instruction is used for Instructing the battery module to discharge and charge;
  • the battery management system is further configured to record the target time, where the target time is the duration of the battery pack discharge in the battery module, or the battery module The battery pack charging duration in the battery pack, or the battery pack discharge duration and charging duration in the battery module;
  • the battery management system is further configured to determine the battery pack according to the target time The health status of the package; or sending the target time to a processing module in the battery system for the processing module to determine the Kang state.
  • the battery pack can be controlled to perform discharging and charging operations according to the first instruction information sent by the processing module in the battery system.
  • the target time can be determined according to the target time.
  • the health status of the battery pack or sending the target time to a processing module in the battery system, so that the processing module can calculate the health status of the battery pack according to the target time.
  • the health status of each of the plurality of battery modules can be detected in order, thereby improving the accuracy of detecting the health status of the battery.
  • the sum of the powers of the battery modules other than the one battery module among the plurality of battery modules is higher than the power required by the target power supply object;
  • the battery modules other than the one battery module are configured to supply power to the target power supply object when the first power source cannot supply power to the target power supply object.
  • the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • the discharge current in a second possible implementation manner of the second aspect, in the process of performing the charging and discharging operations, the discharge current is It is assumed that the discharge current and the charging current are preset charging currents; the battery management system is further configured to determine the health status of the battery pack according to the target time, specifically: according to the continuous discharge according to the preset discharging current Time to determine the first health state of the battery pack; determine the second health state of the battery pack according to the duration of charging according to the preset charging current; according to the first health state and the second health The status determines the health status of the battery pack.
  • the average value of the first health state and the second health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered for charging and discharging.
  • the battery capacity at the time improves the accuracy of detecting the health status of the battery.
  • the discharge current is It is assumed that the discharge current and the charging current are preset charging currents; the battery management system is further configured to determine the health status of the battery pack according to the target time, specifically: according to the continuous discharge according to the preset discharging current Time, the first state of charge, and the second state of charge determine the third state of health of the battery pack, the first state of charge is the state of charge before the battery pack is not discharged, and the first The second state of charge is the state of charge after the battery pack is discharged until the cut-off voltage and before charging is not performed; according to the duration of charging according to the preset charging current, the second state of charge and the third state of charge The state determines a fourth health state of the battery pack, and the third state of charge is a state of charge after the battery pack is fully charged; determined according to the third state of health and the
  • the average value of the third health state and the fourth health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered for charging and discharging.
  • Current battery capacity and state of charge further improving the accuracy of detecting the health status of the battery.
  • an embodiment of the present application provides a method for detecting a battery health state.
  • the method is applied to a battery system, where the battery system includes multiple battery modules and a processing module, and each battery in the multiple battery modules
  • the modules each include a battery management system and a battery pack controlled by the battery management system.
  • the method includes: the battery system controls the battery packs of each of the plurality of battery modules to perform discharge and charge operations in turn; The sum of the power of the battery packs of the battery modules other than the first battery module among the plurality of battery modules is higher than the power required by the target power supply object, and the first battery module is any one of the plurality of battery modules.
  • the battery system records a target time, the target time is the duration of the battery pack discharge in the first battery module, or the charging time of the battery pack in the first battery module, or The duration of discharge and charge duration of the battery pack in the first battery module; the battery system determines according to the target time Said first state of health of the battery cell module package.
  • the processing module controls each battery module in the plurality of battery modules to perform discharge and charge operations in turn, and then determines the health status of each battery module according to each target time, which can be in order Detecting the health status of each of the multiple battery modules, and improving the accuracy of detecting the health status of the battery.
  • the sum of the power of the battery packs of the other battery modules except for any one of the plurality of battery modules is higher than the power required by the target power supply object, which can ensure that any one of the plurality of battery modules has a battery module
  • other battery modules except the one battery module can normally provide power to the target power supply object, thereby avoiding the problem that the target power supply object cannot be provided with sufficient power during the battery health status detection process.
  • the battery system is a backup power source of the first power source; among the plurality of battery modules, one of the plurality of battery modules except a battery module that is performing a discharging and charging operation. Other battery modules are used to supply power to the target power supply object when the first power source cannot supply power to the target power supply object.
  • the multiple battery modules are required to supply power to the target power supply object. Because the power of the remaining battery modules of the multiple battery modules except the one battery module is Not less than the power required by the target power supply object, the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • the controlling a battery pack of each of the plurality of battery modules is controlled.
  • Performing the discharging and charging operations in turn includes: the processing module sends first instruction information to the battery management system of each of the plurality of battery modules in turn, the first instruction information is used to instruct the battery The module discharges and recharges; the battery management system of each battery module controls the battery pack of each battery module to perform the operations of discharge and charge according to the received first instruction information.
  • the processing module can send the first instruction information to the battery management system of each of the multiple battery modules in turn to instruct the battery module to discharge and charge, without manually controlling the switching of the detected battery module.
  • the battery packs of the battery modules alternately perform the operation of first discharging and then charging, so that the battery module that has detected the health status has sufficient power as a backup battery, and the health status of the other battery modules is checked.
  • the battery module that has detected the health status and the battery module that has not been detected can be used together as a backup power source to provide sufficient power for the target power supply object.
  • the discharge current is Setting the discharge current and the charging current as a preset charging current
  • determining the health status of the battery pack in the first battery module according to the target time includes: determining according to the duration of discharge according to the preset discharging current A first state of health of the battery pack in the first battery module; determining a second state of health of the battery pack in the first battery module according to a duration of charging according to the preset charging current; and according to the first The health status and the second health status determine the health status of the battery pack in the first battery module.
  • the average value of the first state of health and the second state of health is taken as the state of health of the battery pack in the first battery module, and the battery pack can be comprehensively considered for charging,
  • the battery capacity during discharge improves the accuracy of detecting the health status of the battery.
  • the discharge current is Setting the discharge current and the charging current as a preset charging current; and determining the health status of the battery pack in the first battery module according to the target time includes: according to a duration of discharging according to the preset discharging current, The first state of charge and the second state of charge determine a third health state of the battery pack in the first battery module, and the first state of charge is a state of charge before the battery pack is not discharged.
  • the second state of charge is a state of charge after the battery pack is discharged until the cut-off voltage and before charging is not performed; according to the duration of charging according to the preset charging current, the second state of charge,
  • the third state of charge determines a fourth health state of the battery pack in the first battery module, and the third state of charge is a state of charge after the battery pack is fully charged; according to the third health State and the fourth state of health of the health status determination of the first cell pack in the battery module.
  • the average value of the third health state and the fourth health state is taken as the health state of the battery pack in the first battery module, and the battery pack can be comprehensively considered for charging,
  • the battery capacity and state of charge during discharge further improve the accuracy of detecting the health status of the battery.
  • the battery system determines the first battery module according to the target time.
  • the health status of the battery pack includes: the processing module receives the target time sent by the battery management system in the first battery module; and the processing module determines the power in the first battery module according to the target time The state of health of the core pack.
  • an embodiment of the present application provides another method for detecting a battery health state, the method includes: the battery module controls a battery pack in the battery module to perform discharging and charging according to the first instruction information sent by the processing module.
  • the first detection instruction is used to instruct the battery module to discharge and charge; the battery module records a target time, where the target time is the duration of the battery pack discharge in the battery module, or The battery pack charging duration in the battery module, or the battery pack discharging duration and charging duration in the battery module; the battery module determining the battery pack in accordance with the target time Health status; or sending the target time to the processing module for the processing module to determine the health status of the battery pack.
  • the battery pack can be controlled to perform discharging and charging operations according to the first instruction information sent by the processing module.
  • the health status of the battery pack can be determined according to the target time Or sending the target time to the processing module, so that the processing module can calculate the health status of the battery pack according to the target time.
  • the health status of each of the plurality of battery modules can be detected in order, thereby improving the accuracy of detecting the health status of the battery.
  • the battery module is one of a plurality of battery modules included in a battery system, and the one battery module is excluded from the one battery.
  • the sum of the power of the other battery modules of the module is higher than the power required by the target power supply object; the other battery modules other than the one battery module are used for all times when the first power source cannot supply power to the target power supply object.
  • the target power supply object supplies power.
  • the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • the average value of the first health state and the second health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered when charging and discharging. Battery capacity to improve the accuracy of detecting battery health.
  • the discharge current is Setting the discharge current and the charging current as a preset charging current; and determining the health status of the battery pack according to the target time is specifically: according to the duration of the discharge according to the preset discharging current, the first charge State, the second state of charge determines the third state of health of the battery pack, the first state of charge is the state of charge before the battery pack is not discharged, and the second state of charge is all The state of charge of the battery pack after discharging to the cut-off voltage and before charging is not performed; the battery cell is determined according to the duration of charging according to the preset charging current, the second state of charge, and the third state of charge A fourth state of health of the bag, and the third state of charge is a state of charge after the battery pack is fully charged; determining the health of the battery pack according to the third state of health and the fourth state of health
  • an average value of the third health state and the fourth health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered for charging and discharging.
  • Current battery capacity and state of charge further improving the accuracy of detecting the health status of the battery.
  • the discharging current is a preset discharging current
  • the charging current is a preset charging current
  • the discharging current is The preset discharge current and the charging current are the preset charging current. In this way, the current of the battery pack during discharge or charging is stable, so the health status of the battery pack in the first battery module calculated based on this is more accurate.
  • the first power generated by the discharge is used to power a target power supply object, and the sum of the first power and the second power is equal to the target power supply object Required power, the second power is provided by the first power source.
  • the process of detecting the health status of the battery can be performed while the first power source supplies power to the target power supply object, and it is not necessary to wait until the first power source cannot provide power to the target power supply object. Detection of the health status of the battery module improves the efficiency of detecting the health status of the battery module.
  • each of the multiple battery modules can be detected in order.
  • the health status of each module improves the accuracy of detecting the health status of the battery.
  • the sum of the power of the battery packs of the other battery modules except for any one of the plurality of battery modules is higher than the power required by the target power supply object, which can ensure that any one of the plurality of battery modules has a battery module
  • other battery modules except the one battery module can normally provide power to the target power supply object, thereby avoiding the problem that the target power supply object cannot be provided with sufficient power during the battery health status detection process.
  • FIG. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a battery system according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a battery health state detection method according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a battery module according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another battery health state detection method according to an embodiment of the application.
  • FIG. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present application.
  • the power supply system may include a city power supply, a generator, an automatic transfer switch (ATS), a manager, a power module, and a target power supply object. , Bus and battery systems. The functions of the above devices are described below.
  • Mains power that is, power frequency AC power, is used to provide power to the target power supply object and to provide charging power to the battery system.
  • the generator is a mechanical device that converts other forms of energy into electrical energy. When the mains power fails to work normally, it is used to provide electrical energy to the target power supply object and to provide charging power to the battery system.
  • Automatic transfer switch appliance is a kind of switching equipment. Its structure adopts electromagnetic drive type, which can realize the fast switching of two power sources. It is used to choose to connect to mains or generator.
  • the power module is a charging power source that can convert AC power to DC power, and is used to supply power to a target power supply object so that the target power supply object can work normally; and charge the battery system so that the battery system reserves electrical energy.
  • the manager is a device that the manager controls the battery system. For example, the manager can send a detection instruction to the processing module to detect the state of charge of multiple battery modules in the battery system. It should be noted that the manager may also send instructions with other functions to the processing module (for example, stopping the charging of the multiple battery modules), which is not limited herein.
  • the target power supply object is a communication device (for example, a server, etc.) that performs business work, and requires the battery system to provide power supply.
  • the bus bar is a main power line that the battery system provides power to the target power supply object.
  • the battery system is a module that stores electrical energy in the power supply system. When the mains and generator cannot normally provide power to the target power supply object, the battery system can provide power to the target power supply object.
  • the battery system includes multiple battery modules and a processing module.
  • Each of the multiple battery modules includes a battery management system (battery management system). , BMS) and a battery pack controlled by the battery management system.
  • BMS battery management system
  • Each module in the battery system is described below.
  • each of the plurality of battery modules includes a battery pack and a battery management system.
  • the battery pack is used to store electrical energy;
  • the battery management system is a device for managing the battery pack, which can monitor the status of the battery pack, prevent the battery pack from being overcharged and overdischarged, and extend the battery pack. The service life of the package.
  • the main functions of the battery management system are: detection of the state of charge (SOC) of the battery pack, monitoring the working state of the battery pack (terminal-side voltage, current, temperature and other parameters), and detection of the battery modules. Total voltage, detecting the total current of the pair of battery modules, displaying and / or recording the collected data, and communicating with other connected devices.
  • SOC state of charge
  • the processing module is a device for controlling a battery management system of each of the plurality of battery modules. For example, the processing module may send a detection instruction to a battery management system of any one of the plurality of battery modules to Instruct the battery management system to detect the state of charge of the battery pack in the battery module. It should be noted that the processing module may also send instructions with other functions to the battery management system of any one of the plurality of battery modules (for example, stopping charging of any one battery module), which is not limited herein. It should be noted that the processing module may be a single module, or may be combined with a battery management system of any one of the plurality of battery modules to implement the function of the processing module. The processing module may be a hardware circuit or a functional module obtained by running a program code by a processor.
  • FIG. 3 a flowchart of a method for detecting a battery health according to an embodiment of the present application may be implemented based on the battery system shown in FIG. 2.
  • the method includes, but is not limited to, the following steps.
  • the battery system controls the battery packs of each of the multiple battery modules to perform discharge and charge operations in turn.
  • the sum of the power of the battery packs of the battery modules other than the first battery module among the plurality of battery modules is higher than the power required by the target power supply object
  • the first battery module is the plurality of batteries. Any battery module in the module.
  • the sum of the power of the battery packs of the battery modules other than the first battery module among the multiple battery modules is higher than the power required by the target power supply object, which can ensure that during the health state detection of the first battery module, Other battery modules except the first battery module can normally provide power to the target power supply object, avoiding the problem that the target power supply object cannot be provided with sufficient power during the battery health state detection process.
  • a battery module other than the battery module that is performing discharging and charging operations is used for supplying power to the target when the first power source cannot supply power to the target power supply object.
  • the multiple battery modules are required to supply power to the target power supply object. Because the power of the remaining battery modules of the multiple battery modules except the one battery module is Not less than the power required by the target power supply object, the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • the battery system controls the battery packs of each of the plurality of battery modules to perform discharge and charge operations in turn, including: the processing module provides each battery module of the plurality of battery modules The battery management system in turn sends first instruction information, where the first instruction information is used to instruct the battery module to discharge and charge; the battery management system of each battery module controls an office according to the received first instruction information.
  • the battery pack of each battery module is described to perform the discharging and charging operations.
  • the processing module can send the first instruction information to the battery management system of the battery modules among the plurality of battery modules in turn to instruct the battery module to discharge and charge, without manually controlling the switching of the detected battery module.
  • the battery packs of the battery modules alternately perform the operation of first discharging and then charging, so that the battery module that has detected the health status has sufficient power as a backup battery, and the health status of the other battery modules is checked.
  • the battery module that has detected the health status and the battery module that has not been detected can be used together as a backup power source to provide sufficient power for the target power supply object.
  • the discharging current is a preset discharging current, or the charging current is a preset charging current, or the discharging current is the preset discharging current and the charging current is The preset charging current.
  • the current of the battery pack during discharge or charging is stable, so the health status of the battery pack in the first battery module calculated based on this is more accurate.
  • the following uses the first battery module as an example to describe a method for calculating the health status of a single battery module among the multiple battery modules.
  • the battery system controls the battery pack in the first battery module to perform discharging and charging operations.
  • the discharging and charging operations may include three cases. The three cases are described below.
  • the discharging current is a preset discharging current, and the charging current is not limited.
  • the battery management system in the first battery module controls the battery pack of the first battery module to perform discharging and charging operations according to the first instruction information, including: the first battery module A battery management system increasing the voltage of the battery pack in the first battery module, so that the battery pack is discharged according to a preset discharge current until the voltage of the battery pack reaches a cut-off voltage; and And controlling the battery pack in the first battery module to be charged until it is fully charged.
  • the discharging current is not limited, and the charging current is a preset charging current.
  • the battery management system in the first battery module controls the battery pack of the first battery module to perform discharging and charging operations according to the first instruction information, including: the first battery module
  • the battery management system controls the battery pack in the first battery module to discharge until reaching a cut-off voltage; then, the battery management system in the first battery module lowers the electricity in the first battery module.
  • the voltage of the core pack is such that the battery pack is charged according to a preset charging current until the voltage of the battery pack is fully charged.
  • the discharging current is a preset discharging current and the charging current is a preset charging current.
  • the battery management system in the first battery module controls the battery pack of the first battery module to perform discharging and charging operations according to the first instruction information, including: first, The battery management system increases the voltage of the battery pack in the first battery module, so that the battery pack is discharged according to a preset discharge current until the voltage of the battery pack reaches a cut-off voltage. Then, the battery management system in the first battery module lowers the voltage of the battery pack in the first battery module, so that the battery pack is charged according to a preset charging current until the battery pack is charged. The voltage of the battery pack is full.
  • the battery system is a backup power source for the first power source, and the first power generated by the discharge is used to power the target power supply object, and the sum of the first power and the second power is equal to the power required by the target power supply object.
  • the second power is provided by the first power source.
  • the current target power supply object requires 100 watts of power.
  • the first power generated by the discharge is 10 watts, and the second power provided by the first power supply is 90 watts.
  • the sum of the first power and the second power is equal to the target power supply.
  • the power required by the object the first power and the second power may be other values, which are merely examples here.
  • the process of detecting the health status of the battery can be performed while the first power source supplies power to the target power supply object, and it is not necessary to wait until the first power source cannot provide power to the target power supply object.
  • the detection of the health status of the multiple battery modules improves the efficiency of detecting the health status of the battery modules.
  • the battery system records a target time.
  • the target time is a duration for discharging the battery pack in the first battery module, or a duration for charging the battery pack in the first battery module, or the first battery module The duration of the battery pack discharge and charge duration.
  • the first way to record the target time is the first case mentioned above.
  • the battery management system of the first battery module records the duration of discharge in the first battery module according to a preset discharge current.
  • the second method of recording the target time is the second case mentioned above.
  • the battery management system of the first battery module records the duration of charging in the first battery module according to a preset charging current.
  • the third method of recording the target time in response to the third case mentioned above, the battery management system of the first battery module records the duration of discharge in the first battery module according to a preset discharge current and the charging in accordance with a preset Duration of current charging.
  • the battery system determines the health status of the battery pack in the first battery module according to the target time.
  • the processing module may determine the health status of the battery pack in the first battery module according to the target time. Specifically, the processing module receives the information sent by the battery management system in the first battery module. The target time; the processing module determines the health status of the battery pack in the first battery module according to the target time.
  • the battery management system of the first battery module may determine the health status of the battery pack in the first battery module according to the target time.
  • determining the health status of the battery pack in the first battery module according to the target time includes: determining the duration of the discharge according to the preset discharge current and the preset discharge current.
  • the health status of the battery pack in the first battery module For example, if the duration of the battery pack discharge in the first battery module according to a preset discharge current is t 1 , the preset discharge current is I 1 , and the rated capacity of the battery pack is Q 0 .
  • the health state SOH of the battery pack can be calculated by Equation 1-1, which is as follows:
  • the battery management system in the first battery module can control the battery pack in the first battery module to discharge according to a preset discharge current, and then determine the electricity in the first battery module according to the duration of the discharge.
  • the state of health of the core pack Since the discharge current of the battery pack during the discharge process is stabilized at a preset discharge current, the health status of the battery pack in the first battery module calculated on this basis is more accurate, and the detection of the battery health state is improved.
  • this battery system there is no need to manually control the battery for charging and discharging, which improves the efficiency of detecting the health status of the battery.
  • determining the health status of the battery pack in the first battery module according to the target time may further include: according to the duration of the discharge according to the preset discharge current, a preset discharge current, a first state of charge, and The second state of charge determines the health state of the battery pack in the first battery module.
  • the first state of charge is the state of charge before the battery pack is not discharged
  • the second state of charge is the state of charge before the battery pack is discharged until the cut-off voltage is not charged.
  • the battery pack in the first battery module is discharged according to a preset discharge current duration t 2 , the preset discharge current is I 2 , the first state of charge is 95%, and the second state of charge Is 5%. From the corresponding relationship between the state of charge and the battery capacity, it can be known that the reduced capacity of the battery from the state of charge of 95% to the state of charge of 5% is Q 1.
  • the battery management system pre-stores the corresponding relationship between the state of charge and battery capacity . Then, the health state SOH of the battery pack can be calculated by Formula 1-2, which is as follows:
  • the detection of the state of charge of the battery pack in the first battery module is added, which can obtain a more accurate theoretical capacitance conversion amount and improve the accuracy of the battery health state.
  • the following describes the acquisition of the first state of charge and the second state of charge.
  • a state of charge of the battery pack may be determined, and the state of charge may be It is called the first state of charge; and after the voltage of the battery pack reaches the cut-off voltage, the state of charge of the battery pack is determined again, and the state of charge may be called the second state of charge.
  • the battery management system can determine the state of charge of the battery pack from the correspondence between the open circuit voltage of the battery pack and the state of charge according to the detected open circuit voltage of the battery pack, and the battery management system pre-stores There is a corresponding relationship between the open circuit voltage of the battery pack and the state of charge.
  • determining the health status of the battery pack in the first battery module according to the target time includes: determining the duration of charging according to the preset charging current and the preset charging current.
  • the health status of the battery pack in the first battery module For example, if the duration of charging the battery pack in the first battery module according to a preset charging current is t 3 , the preset charging current is I 3 , and the rated capacity of the battery pack is Q 0 .
  • the health state SOH of the battery pack can be calculated by formula 1-3, which is as follows:
  • the battery management system in the first battery module can control the battery pack in the first battery module to charge according to a preset charging current, and then determine the power in the first battery module according to the charging duration.
  • the state of health of the core pack Since the discharge current during the entire discharge process is stabilized at a preset discharge current, the health status of the battery pack in the first battery module calculated on this basis is more accurate, and the accuracy of detecting the health status of the battery is improved; At the same time, in this battery system, there is no need to manually control the battery for charging and discharging, which improves the efficiency of detecting the health status of the battery.
  • determining the health status of the battery pack in the first battery module according to the target time may further include: according to the duration of charging according to the preset charging current, a preset charging current, a second state of charge, and The third state of charge determines the health state of the battery pack in the first battery module.
  • the second state of charge is a state of charge after the battery pack is discharged until the cut-off voltage and before charging is not performed; the third state of charge is a state of charge after the battery pack is fully charged.
  • the battery pack in the first battery module is charged according to a preset discharge current for a duration of t 4
  • the preset charge current is I 4
  • the second state of charge is 5%
  • the third state of charge 90% is I 4.
  • the increased capacity of the battery from the 5% state of charge to 90% of the state of charge is Q 2.
  • the battery management system pre-stores the corresponding relationship between the state of charge and the battery capacity .
  • the health state SOH of the battery pack can be calculated by Formula 1-4, and Formula 1-4 is as follows:
  • the detection of the state of charge of the battery pack in the first battery module is added, which can obtain a more accurate theoretical capacitance conversion amount and improve the accuracy of the battery health state.
  • the following describes the acquisition of the third state of charge.
  • a state of charge of the battery pack may be determined, and the state of charge is a third state of charge.
  • the battery management system can determine the state of charge of the battery pack from the correspondence between the open circuit voltage of the battery pack and the state of charge according to the detected open circuit voltage of the battery pack, and the battery management system pre-stores There is a corresponding relationship between the open circuit voltage of the battery pack and the state of charge.
  • determining the health status of the battery pack in the first battery module according to the target time includes: determining the first battery according to the duration of charging according to the preset discharge current. A first health state of the battery pack in the module; determining a second health state of the battery pack in the first battery module according to a duration of charging according to the preset charging current; and according to the first A health state and the second health state determine the health state of the battery pack in the first battery module. .
  • the health state SOH of the battery pack can be calculated by formulas 1-5, 1-6, and 1-7.
  • the formulas 1-5, 1-6, and 1-7 are as follows:
  • SOH 1 represents the first health state of the battery pack in the first battery module
  • SOH 2 represents the second health state of the battery pack in the first battery module
  • a represents the calculation ratio of the first health state
  • b The calculated proportion representing the second state of health.
  • a and b can have various values according to the actual situation, for example, a is 0.5, b is 0.5; a is 0.7, b is 0.3, and other values. In this way, the battery capacity during charging and discharging of the battery pack can be comprehensively considered, and the accuracy of detecting the health status of the battery can be improved.
  • determining the health status of the battery pack in the first battery module according to the target time includes: according to the duration of charging according to the preset discharge current, a preset discharge current, a first state of charge, and a second The state of charge determines a third state of health of the battery pack in the first battery module; according to the duration of charging according to the preset charging current, a preset charging current, a second charging state, and a third charging state The electrical state determines a fourth health state of the battery pack in the first battery module; the health state of the battery pack in the first battery module is the third health state and the fourth The average state of health.
  • the first state of charge is the state of charge before the battery pack is not discharged
  • the second state of charge is the state of charge before the battery pack is discharged until the cut-off voltage is not charged
  • the third state of charge is The electric state is the state of charge after the battery pack is fully charged.
  • the battery pack in the first battery module is discharged according to a preset discharge current for a duration t 7 and the preset discharge current is I 7
  • the battery pack in the first battery module is charged according to a preset
  • the duration of the current discharge is t 8
  • the preset discharge current is I 8
  • the first state of charge is 90%
  • the second state of charge is 10%
  • the third state of charge is 95%.
  • the reduced capacity of the battery from 90% of the state of charge to 10% of the state of charge is Q 3
  • the battery has changed from 10% of the state of charge to 95% of the state of charge
  • the increased capacitance is Q 4 .
  • the health state SOH of the battery pack can be calculated by formulas 1-8, 1-9, and 1-10, and formulas 1-8, 1-9, and 1-10 are as follows:
  • SOH 3 represents the third health state of the battery pack in the first battery module
  • SOH 4 represents the fourth health state of the battery pack in the first battery module
  • c represents the calculated proportion of the first health state
  • d The calculated proportion representing the second state of health.
  • c is 0.5 and d is 0.5; c is 0.7 and d is 0.3. In this way, based on the above method, the detection of the state of charge of the battery pack in the first battery module is added, which can obtain a more accurate theoretical capacitance conversion amount and improve the accuracy of the battery health state.
  • the processing module sequentially controls the next battery module to perform discharging and charging operations, and then the next battery
  • the battery management system in the module records the target time corresponding to the next battery module, and the target time corresponding to the next battery module is the duration of the battery pack discharge in the next battery module, or The duration of the battery pack charging in the next battery module, or the discharge duration and charging duration of the battery pack in the next battery module; the battery management system or the battery management system in the next battery module
  • the processing module determines a health state of the next battery module according to a target time corresponding to the next battery module.
  • the battery management system in the next battery module controls the manner of discharging and / or charging the battery pack in the next battery module according to the first instruction information; the next battery module
  • the battery management system in the system records the target time corresponding to the next battery module.
  • the battery management system or the processing module in the next battery module determines the target time according to the target time corresponding to the next battery module.
  • the manner of describing the health status of the next battery module; the manners used in the first battery module described above can be adopted. With this method, the battery system can sequentially detect the health status of each of the plurality of battery modules, without manually controlling the switching of the detected battery modules, and improving the efficiency of detecting the health status of multiple battery modules.
  • it may further include determining that the plurality of battery modules meet a detection start condition.
  • the detection start condition may be that the processing module receives an instruction to start detecting the battery health status sent by the manager, and may also mean that at least one of the plurality of battery modules has no health within the first preset time. Status updates. It should be noted that there may be other detection start conditions, which are not limited herein.
  • the processing module determines that the plurality of battery modules meet the detection start condition, It may include: the processing module prohibits charging of the plurality of battery modules. After the processing module prohibits charging of the plurality of battery modules, the plurality of battery modules are in a standby state for a first preset time. It should be noted that the standby state is a state in which the multiple battery modules do not perform substantial work (charging or discharging), but if the multiple battery modules are required to provide power to the target power supply object at this time, the multiple battery modules Power can be provided to the target power supply object. In this way, the open-circuit voltages of the multiple battery modules can be stabilized, and the problem of inaccurate health detection due to the unstable open-circuit voltage can be avoided.
  • the processing module after the processing module prohibits the power module from charging the plurality of battery modules, the processing module adds a charging prohibition flag and / or a health detection flag to the plurality of battery modules. In this way, other equipment or managers can be prevented from performing other unnecessary operations on the multiple battery modules, and the detection results of the health status of the multiple battery modules by other equipment or managers can be avoided.
  • the method may further include that the processing module sorts the plurality of battery modules.
  • the sorting method may be based on at least one of the last detected health status of each battery module in the plurality of battery modules, the usage time, and the distance from the last health status detection time. For example, sorting can be performed according to the health status of the last detection of each of the plurality of battery modules in ascending order, so that it is easier and faster to find battery modules with unhealthy health status.
  • the method for detecting a battery health state may further include that, in the process of detecting the battery health state, the processing module determines that the plurality of battery modules meet a detection end condition.
  • the detection end condition includes completion of calculation of the health status of each of the plurality of battery modules, an abnormality occurs in any one of the plurality of battery modules, and a detection time of any one of the plurality of battery modules Greater than the second preset time, the duration that the current of any one of the plurality of battery modules is not within the preset range is greater than at least one of the third preset time. It should be noted that there may be other detection end conditions, which are not limited herein.
  • the processing module may further send a detection result and an end reason to the manager. In this way, the management personnel can understand the detection result and the end reason. If the end reason is caused by an abnormality, it is convenient for the management personnel to perform maintenance corresponding to the abnormality.
  • the processing module may also clear the plurality of charging prohibition flags and / or flags for detecting health status. In this way, after the detection ends, other equipment or management personnel can operate the multiple battery modules.
  • the multiple batteries can be detected in order.
  • the health status of each module in the module improves the accuracy of detecting the health status of the battery.
  • the sum of the power of the battery packs of the other battery modules except for any one of the plurality of battery modules is higher than the power required by the target power supply object, which can ensure that any one of the plurality of battery modules has a battery module
  • other battery modules except the one battery module can normally provide power to the target power supply object, thereby avoiding the problem that the target power supply object cannot be provided with sufficient power during the battery health status detection process.
  • the battery module 40 includes a battery management system 401 and a battery pack 402 controlled by the battery management system.
  • the battery pack 402 is used to store electric energy;
  • the battery management system 401 is a device for managing the battery pack, which can monitor the status of the battery pack, prevent the battery pack from being overcharged and overdischarged, and extend Battery pack life.
  • the main functions of the battery management system are: detection of the state of charge of the battery pack, monitoring the working state of the battery pack (terminal-side voltage, current, temperature and other parameters), detection of the total voltage of the multiple battery modules, and detection of the pair of batteries. Total current of the battery module, display and / or record the collected data, communicate with other connected devices, etc.
  • FIG. 5 it is a flowchart of another method for detecting battery health according to an embodiment of the present application.
  • the method may be implemented based on the battery system shown in FIG. 4.
  • the method includes, but is not limited to, the following steps.
  • the battery module controls the battery pack in the battery module to perform discharging and charging operations according to the first instruction information sent by the processing module.
  • the first detection instruction is used to instruct the battery module to discharge and charge.
  • the battery module controls the battery pack in the battery module to perform discharging and charging operations according to the first instruction information sent by the processing module, including: the battery management system in the battery module according to the first instruction sent by the processing module
  • the information controls the battery pack in the battery module to perform discharging and charging operations.
  • the discharging and charging operation may include three cases. For the three cases, reference may be made to the three situations that the discharging and charging operation may include in step S301 in FIG. 3, and details are not described herein again.
  • the battery module records a target time.
  • the target time is a duration for discharging the battery pack in the battery module, or a duration for charging the battery pack in the battery module, or discharging the battery pack in the battery module. Duration and duration of charging.
  • the battery module recording the target time includes: a battery management system in the battery module records the target time. Specifically, for a manner of recording the target time, reference may be made to a manner of recording the target time described in step S302 in FIG. 3, and details are not described herein again.
  • the battery module determines the health status of the battery pack according to the target time; or sends the target time to the processing module for the processing module to determine the health status of the battery pack.
  • determining the health status of the battery pack according to the target time includes: determining, by the battery management system of the battery module, the health status of the battery pack according to the target time. Specifically, for a manner of determining the health status of the battery pack according to the target time, reference may be made to the manner of determining the health status of the battery pack in the first battery module according to the target time described in step S303 in FIG. 3. , Will not repeat them here.
  • the battery pack can be controlled to perform discharging and charging operations according to the first instruction information sent by the processing module.
  • the health status of the battery pack can be determined according to the target time Or sending the target time to the processing module, so that the processing module can calculate the health status of the battery pack according to the target time.
  • the health status of each of the plurality of battery modules can be detected in order, thereby improving the accuracy of detecting the health status of the battery.
  • the battery module is a battery module among a plurality of battery modules included in a battery system, and the sum of the power of other battery modules except the one battery module among the plurality of battery modules Higher than the power required by the target power supply object; the battery modules other than the one battery module are used to supply power to the target power supply object when the first power source cannot supply power to the target power supply object.
  • the multiple battery modules can provide sufficient power to the target power supply object, avoiding the problem that the target power supply object cannot provide sufficient power during the battery detection process.
  • a discharging current is a preset discharging current and a charging current is a preset charging current; and the determining is performed according to the target time.
  • the health status of the battery pack includes: determining a first health status of the battery pack according to a duration of discharge according to a preset discharge current; and determining the battery core according to a duration of charging according to a preset charging current The second health state of the bag; determining the health state of the battery pack according to the first health state and the second health state.
  • the average value of the first health state and the second health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered when charging and discharging. Battery capacity to improve the accuracy of detecting battery health.
  • a discharging current is a preset discharging current and a charging current is a preset charging current; and the determining is performed according to the target time.
  • the health status of the battery pack is specifically: determining the third health status of the battery pack according to the duration of discharge according to the preset discharge current, the first state of charge, and the second state of charge, and the first The state of charge is the state of charge before the battery pack is not discharged, and the second state of charge is the state of charge before the battery pack is discharged until the cut-off voltage and before charging is not performed;
  • the preset charging current duration, the second state of charge, and the third state of charge determine a fourth health state of the battery pack, and the third state of charge is after the battery pack is fully charged
  • the state of charge of the battery core is determined according to the third state of health and the fourth state of health.
  • an average value of the third health state and the fourth health state is taken as the health state of the battery pack in the battery module, and the battery pack can be comprehensively considered for charging and discharging.
  • Current battery capacity and state of charge further improving the accuracy of detecting the health status of the battery.
  • the discharging current is a preset discharging current, or the charging current is a preset charging current, or the discharging current is the preset discharging current.
  • the charging current is the preset charging current.
  • the first power generated by the discharge is used to power the target power supply object, and the sum of the first power and the second power is equal to the power required by the target power supply object, and the second Power is provided by the first power source.
  • the process of detecting the health status of the battery can be performed while the first power source supplies power to the target power supply object, and it is not necessary to wait until the first power source cannot provide power to the target power supply object. Detection of the health status of the battery module improves the efficiency of detecting the health status of the battery module.
  • the battery pack can be controlled to perform discharging and charging operations according to the first instruction information sent by the processing module.
  • the battery pack By recording the target time, the battery pack can be determined according to the target time. Health status; or sending the target time to the processing module so that the processing module can calculate the health status of the battery pack according to the target time.

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Abstract

本申请实施例公开了一种电池系统及电池健康状态的检测方法，该电池系统包括处理模块和多个电池模块，多个电池模块中每个电池模块包括电池管理系统和电芯包，其中：处理模块，用于控制多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作；多个电池模块中除第一电池模块的其他电池模块的功率之和高于目标供电对象所需的功率，该第一电池模块为多个电池模块中任意一个电池模块；第一电池模块中的电池管理系统，用于记录目标时间；第一电池模块中的电池管理系统或者处理模块，用于根据该目标时间确定第一电池模块中电芯包的健康状态。本申请实施例可以检测多个电池模块中每个电池模块的健康状态，提升检测电池的健康状态的准确性。

Description

一种电池系统及电池健康状态的检测方法
本申请要求于2018年6月12日提交中国国家知识产权局、申请号为201810602971.1、申请名称为“一种电池系统及电池健康状态的检测方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及计算机技术领域，尤其涉及一种电池系统及电池健康状态的检测方法。
背景技术
由于锂离子电池具有优秀的储能能力，目前在移动终端，机房设备，医疗器械等多领域已经广泛使用。锂离子电池的健康状态(state of health，SOH)是体现锂离子电池性能的一个重要的参数。电池的健康状态的定义为：电池当前的容量与出厂容量的百分比。若电池的健康状态低于预设阈值，则表示该电池已无法正常工作，需要被更换。现阶段，一般由多个并联的锂离子电池作为机房的备用电源，在这种情况下，检测锂离子电池健康状态的方法为：在该多个并联的锂离子电池向目标供电对象提供电能的过程中，根据供电电流和供电时间计算该多个并联的锂离子电池的健康状态。若计算出的健康状态低于预设阈值，则表示该多个锂离子电池无法正常完成供电工作，需要更换该多个锂离子电池。通过这种方式，可能存在该多个锂离子电池中部分锂离子电池能正常工作也被替换的情况。
发明内容
本申请实施例提供一种电池系统及电池健康状态的检测方法，可以检测多个电池模块中每个电池模块的健康状态，提升检测电池的健康状态的准确性。
第一方面，本申请实施例提供了一种电池系统，所述电池系统包括处理模块和多个电池模块，所述多个电池模块中每个电池模块各自包括电池管理系统和由所述电池管理系统控制的电芯包，其中：所述处理模块，用于控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作；所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，所述第一电池模块为所述多个电池模块中任意一个电池模块；所述第一电池模块中的电池管理系统，用于记录目标时间，所述目标时间为所述第一电池模块中的电芯包放电持续的时间，或者为所述第一电池模块中的电芯包充电持续的时间，或者为所述第一电池模块中的电芯包放电持续的时间和充电持续的时间；所述第一电池模块中的电池管理系统或者所述处理模块，用于根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
通过这种电池系统，该处理模块控制该多个电池模块中各个电池模块轮流执行放电和充电的操作，然后根据目标时间确定该每个电池模块的健康状态，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。并且，所述多个电池模块中除任意一个电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，能够保证在该多个电池模块中的任意一个电池模块在检测健康状态的过程中， 除该任意一个电池模块的其他电池模块可以正常为目标供电对象提供电能，避免在电池健康状态的检测过程中，无法对目标供电对象提供足够的电能的问题。
结合第一方面，在第一方面的第一种可能的实现方式中，所述电池系统为第一电源的备用电源；所述多个电池模块中除正在执行放电和充电的操作的电池模块之外的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。通过这种方式，若一个电池模块执行放电和充电的操作的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
结合第一方面，或者第一方面的上述任一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述处理模块，用于控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作，具体为：所述处理模块用于，向所述多个电池模块中的每个电池模块的电池管理系统轮流发送第一指示信息，所述第一指示信息用于指示所述电池模块放电和充电；所述每个电池模块的电池管理系统用于，根据接收到的所述第一指示信息控制所述每个电池模块的电芯包执行放电和充电的操作。
通过这种电池系统，处理模块用可以向所述多个电池模块中各个电池模块的电池管理系统轮流发送第一指示信息以指示电池模块进行放电和充电，无需人工控制被检测电池模块的切换，能够提升检测多个电池模块的健康状态的效率。同时，所述电池模块的电芯包轮流执行先放电后充电的操作，能够使得检测完健康状态的电池模块有足够的功率作为备电电池，在对其他的一个电池模块进行健康状况的检测的过程中，检测完健康状态的电池模块与未被检测的电池模块能够一起作为备用电源，为目标供电对象提供足够的功率。
结合第一方面，或者第一方面的上述任一种可能的实现方式，在第一方面的第三种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间确定所述第一电池模块中电芯包的第一健康状态；根据按照所述预设充电电流充电持续的时间确定所述第一电池模块中电芯包的第二健康状态；根据所述第一健康状态和所述第二健康状态确定所述第一电池模块中电芯包的健康状态。
通过这种电池系统，将所述第一健康状态和所述第二健康状态的平均值作为所述第一电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
结合第一方面，或者第一方面的上述任一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述第一电池模块中的电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；根据按照所述预设充电电流充电持续的时间，所述第二荷电状态， 第三荷电状态确定所述第一电池模块中的电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；根据所述第三健康状态和所述第四健康状态确定所述第一电池模块中的所述电芯包的健康状态。
通过这种电池系统，将所述第三健康状态和所述第四健康状态的平均值作为所述第一电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量以及荷电状态，进一步提高检测电池健康状态的准确性。
结合第一方面，或者第一方面的上述任一种可能的实现方式，在第一方面的第五种可能的实现方式中，所述处理模块，用于根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：接收所述第一电池模块中的电池管理系统发送的所述目标时间；根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
第二方面，本申请实施例提供了一种电池模块，所述电池模块为电池系统包含的多个电池模块中的一个电池模块，所述电池模块包括电池管理系统和由所述电池管理系统控制的电芯包，其中：所述电池管理系统用于，根据所述电池系统中的处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，所述第一检测指令用于指示所述电池模块放电和充电；所述电池管理系统还用于，记录所述目标时间，所述目标时间为所述电池模块中的电芯包放电持续的时间，或者为所述电池模块中的电芯包充电持续的时间，或者为所述电池模块中的电芯包放电持续的时间和充电持续的时间；所述电池管理系统还用于，根据所述目标时间确定所述电芯包的健康状态；或者向所述电池系统中的处理模块发送所述目标时间，以用于所述处理模块确定所述电芯包的健康状态。
通过这种电池模块，能够根据所述电池系统中的处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，通过记录所述目标时间，可以根据所述目标时间确定所述电芯包的健康状态；或者向所述电池系统中的处理模块发送所述目标时间，以使该处理模块可以根据所述目标时间计算所述电芯包的健康状态。检测由多个这种电池模块组成的电池系统时，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。
结合第二方面，在第二方面的第一种可能的实现方式中，所述多个电池模块中除所述一个电池模块的其他电池模块的功率之和高于目标供电对象所需的功率；所述除所述一个电池模块的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
通过这种方式，若在该一个电池模块进行健康状态检测的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
结合第二方面，或者第二方面的上述任一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述电池管理系统还用于根据所述目标时间确定所述电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间确定所述电芯包的第一健康状态；根据按照所述预设充电电流充电持续的时间确定所述电芯包的第二健康状态；根 据所述第一健康状态和所述第二健康状态确定所述电芯包的健康状态。
通过这种电池模块，将所述第一健康状态和所述第二健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
结合第二方面，或者第二方面的上述任一种可能的实现方式，在第二方面的第三种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述电池管理系统还用于根据所述目标时间确定所述电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；根据所述第三健康状态和所述第四健康状态确定所述电芯包的健康状态。
通过这种电池模块，将所述第三健康状态和所述第四健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量以及荷电状态，进一步提高检测电池健康状态的准确性。
第三方面，本申请实施例提供了一种电池健康状态的检测方法，所述方法应用于电池系统，所述电池系统包括多个电池模块和处理模块，所述多个电池模块中每个电池模块各自包括电池管理系统和由所述电池管理系统控制的电芯包，所述方法包括：电池系统控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作；所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，所述第一电池模块为所述多个电池模块中任意一个电池模块；所述电池系统记录目标时间，所述目标时间为所述第一电池模块中的电芯包放电持续的时间，或者为所述第一电池模块中的电芯包充电持续的时间，或者为所述第一电池模块中的电芯包放电持续的时间和充电持续的时间；所述电池系统根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
通过这种电池健康状态的检测方法，该处理模块控制该多个电池模块中各个电池模块轮流执行放电和充电的操作，然后根据每个目标时间确定该每个电池模块的健康状态，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。并且，所述多个电池模块中除任意一个电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，能够保证在该多个电池模块中的任意一个电池模块在检测健康状态的过程中，除该任意一个电池模块的其他电池模块可以正常为目标供电对象提供电能，避免在电池健康状态的检测过程中，无法对目标供电对象提供足够的电能的问题。
结合第三方面，在第三方面的第一种可能的实现方式中，所述电池系统为第一电源的备用电源；所述多个电池模块中除正在执行放电和充电的操作的电池模块之外的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
通过这种方式，若一个电池模块执行放电和充电的操作的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足 够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
结合第三方面，或者第三方面的上述任一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作，包括：所述处理模块向所述多个电池模块中的每个电池模块的电池管理系统轮流发送第一指示信息，所述第一指示信息用于指示所述电池模块放电和充电；所述每个电池模块的电池管理系统根据接收到的所述第一指示信息控制所述每个电池模块的电芯包执行放电和充电的操作。
通过这种方法，处理模块用可以向所述多个电池模块中各个电池模块的电池管理系统轮流发送第一指示信息以指示电池模块进行放电和充电，无需人工控制被检测电池模块的切换，能够提升检测多个电池模块的健康状态的效率。同时，所述电池模块的电芯包轮流执行先放电后充电的操作，能够使得检测完健康状态的电池模块有足够的功率作为备电电池，在对其他的一个电池模块进行健康状况的检测的过程中，检测完健康状态的电池模块与未被检测的电池模块能够一起作为备用电源，为目标供电对象提供足够的功率。
结合第三方面，或者第三方面的上述任一种可能的实现方式，在第三方面的第三种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设放电电流放电持续的时间确定所述第一电池模块中电芯包的第一健康状态；根据按照所述预设充电电流充电持续的时间确定所述第一电池模块中电芯包的第二健康状态；根据所述第一健康状态和所述第二健康状态确定所述第一电池模块中电芯包的健康状态。
通过这种方法，将所述第一健康状态和所述第二健康状态的平均值作为所述第一电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
结合第三方面，或者第三方面的上述任一种可能的实现方式，在第三方面的第四种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述第一电池模块中的电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述第一电池模块中的电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；根据所述第三健康状态和所述第四健康状态确定所述第一电池模块中的所述电芯包的健康状态。
通过这种方法，将所述第三健康状态和所述第四健康状态的平均值作为所述第一电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量以及荷电状态，进一步提高检测电池健康状态的准确性。
结合第三方面，或者第三方面的上述任一种可能的实现方式，在第三方面的第五种可能的实现方式中，所述电池系统根据所述目标时间确定所述第一电池模块中电芯包的健康 状态，包括：所述处理模块接收所述第一电池模块中的电池管理系统发送的所述目标时间；所述处理模块根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
第四方面，本申请实施例提供了又一种电池健康状态的检测方法，所述方法包括：电池模块根据处理模块发送的第一指示信息控制所述电池模块中的电芯包执行放电和充电的操作，所述第一检测指令用于指示所述电池模块放电和充电；所述电池模块记录目标时间，所述目标时间为所述电池模块中的电芯包放电持续的时间，或者为所述电池模块中的电芯包充电持续的时间，或者为所述电池模块中的电芯包放电持续的时间和充电持续的时间；所述电池模块根据所述目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以用于所述处理模块确定所述电芯包的健康状态。
通过这种方法，能够根据处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，通过记录所述目标时间，可以根据所述目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以使该处理模块可以根据所述目标时间计算所述电芯包的健康状态。检测由多个这种电池模块组成的电池系统时，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。
结合第四方面，在第四方面的第一种可能的实现方式中，所述电池模块为电池系统包含的多个电池模块中的一个电池模块，所述多个电池模块中除所述一个电池模块的其他电池模块的功率之和高于目标供电对象所需的功率；所述除所述一个电池模块的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
通过这种方式，若在该一个电池模块进行健康状态检测的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
结合第四方面，或者第四方面的上述任一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，包括：根据按照所述预设放电电流放电持续的时间确定所述电芯包的第一健康状态；根据按照所述预设充电电流充电持续的时间确定所述电芯包的第二健康状态；根据所述第一健康状态和所述第二健康状态确定所述电芯包的健康状态。
通过这种方法，将所述第一健康状态和所述第二健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
结合第四方面，或者第四方面的上述任一种可能的实现方式，在第四方面的第三种可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述电芯包的 第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；根据所述第三健康状态和所述第四健康状态确定所述电芯包的健康状态。
通过这种电方法，将所述第三健康状态和所述第四健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量以及荷电状态，进一步提高检测电池健康状态的准确性。
在以上任一方面的任一可能的实现方式中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。通过这种方式，该电芯包在放电或者充电过程中的电流稳定，因此在此基础上计算出的该第一电池模块中该电芯包的健康状态更准确。
在以上任一方面的任一可能的实现方式中，其特征在于，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。通过这种方式，使得该检测电池健康状态的过程可以在该第一电源对该目标供电对象提供电能的过程中进行，不需要等到该第一电源无法对该目标供电对象提供电能时，再对电池模块的健康状态进行检测，提升了检测电池模块健康状态的效率。
在本申请实施例中，通过控制多个电池模块中的电池模块轮流执行放电和充电的操作，然后根据目标时间确定该每个电池模块的健康状态，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。并且，所述多个电池模块中除任意一个电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，能够保证在该多个电池模块中的任意一个电池模块在检测健康状态的过程中，除该任意一个电池模块的其他电池模块可以正常为目标供电对象提供电能，避免在电池健康状态的检测过程中，无法对目标供电对象提供足够的电能的问题。
附图说明
为了更清楚地说明本申请实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种供电系统的架构示意图；
图2是本申请实施例提供的一种电池系统的示意图；
图3是本申请实施例提供的一种电池健康状态检测方法的示意图。
图4是本申请实施例提供的一种电池模块的示意图；
图5是申请实施例提供的又一种电池健康状态检测方法的示意图。
具体实施方式
下面将对本申请实施例中的技术方案进行更详细地描述。
参见图1，是本申请实施例提供一种供电系统的架构示意图，该供电系统可包括市电，发电机，自动转换开关电器(automatic transfer switch，ATS)，管理器，电源模块，目标供电对象，母线和电池系统等设备。下面对上述设备的功能进行介绍。
市电，即工频交流电，用于为该目标供电对象提供电能，以及为该电池系统提供充电电能。
发电机，是将其他形式的能源转换成电能的机械设备，在市电无法正常工作时，用于为该目标供电对象提供电能，以及为该电池系统提供充电电能。
自动转换开关电器，是一种开关设备，结构采用电磁驱动型，可实现两路电源的快速切换，用于选择接入市电或者发电机。
电源模块，是可以将交流电转化为直流电的充电电源，用于给目标供电对象供电，以使该目标供电对象正常工作；以及，对该电池系统充电，以使该电池系统储备电能。
管理器，是管理人员对该电池系统进行控制的设备，举例而言，可向该处理模块发送检测该电池系统中的多个电池模块的荷电状态的检测指令。需要说明的是，该管理器还可以向该处理模块发送具有其他功能的指令(例如，停止该多个电池模块充电)，此处不作限制。
目标供电对象，是进行业务工作的通信设备(例如，服务器等)，需要该电池系统提供电能供应。
母线，是该电池系统向该目标供电对象提供电能的主功率线路。
电池系统，是该供电系统中储备电能的模块，当市电和发电机无法正常对该目标供电对象提供电能时，可以由该电池系统对该目标供电对象提供电能。
参见图2，是本申请实施例提供的一种电池系统的示意图，该电池系统包括多个电池模块和处理模块，所述多个电池模块中每个电池模块各自包括电池管理系统(battery management system，BMS)和由所述电池管理系统控制的电芯包。下面对该电池系统中的各个模块进行介绍。
多个电池模块(包括电池模块1，电池模块2，……，电池模块N，电池模块N+1，……)，是该电池系统中储备电能的模块，当市电和发电机无法正常对该目标供电对象提供电能时，可以由该多个电池模块对该目标供电对象提供电能。具体的，该多个电池模块中每个电池模块包括电芯包和电池管理系统。其中，电芯包用于储存电能；电池管理系统是用于对电芯包进行管理的设备，能够监控该电芯包的状态，可以防止该电芯包出现过充电和过放电，延长电芯包的使用寿命。电池管理系统的主要功能有：电芯包荷电状态(state of charge，SOC)的检测，监测电芯包的工作状态(端侧电压、电流、温度等参数)，检测该多个电池模块的总电压，检测该对个电池模块的总电流，显示和/或记录采集到的数据，与相连的其他设备进行通讯等。
处理模块，是用于控制该多个电池模块中每个电池模块的电池管理系统的设备，举例而言，可向该多个电池模块中的任意一个电池模块的电池管理系统发送检测指令，以指示该电池管理系统检测该电池模块中的电芯包的荷电状态。需要说明的是，该处理模块还可以向多个电池模块中任意一个电池模块的电池管理系统该发送具有其他功能的指令(例如，停止该任意一个电池模块充电)，此处不作限制。需要说明的是，该处理模块可以为单独的一个模块，还可以与该多个电池模块中的任意一个电池模块的电池管理系统结合在一起，实现该处理模块的功能。处理模块可以是一个硬件电路，也可以是通过处理器运行程序代码得到的功能模块。
参见图3，是本申请实施例提供一种电池健康状态检测方法的流程图，该方法可以基于图2所示的电池系统来实现，该方法包括但不限于如下步骤。
S301、电池系统控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作。
可选的，所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，所述第一电池模块为所述多个电池模块中任意一个电池模块。所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，能够保证在该第一电池模块在检测健康状态的过程中，除该第一电池模块的其他电池模块可以正常为目标供电对象提供电能，避免在电池健康状态的检测过程中，无法对目标供电对象提供足够的电能的问题。
可选的，所述多个电池模块中除正在执行放电和充电的操作的电池模块之外的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。通过这种方式，若一个电池模块执行放电和充电的操作的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
可选的，所述电池系统控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作，包括：所述处理模块向所述多个电池模块中的每个电池模块的电池管理系统轮流发送第一指示信息，所述第一指示信息用于指示所述电池模块放电和充电；所述每个电池模块的电池管理系统根据接收到的所述第一指示信息控制所述每个电池模块的电芯包执行放电和充电的操作。
通过这种方法，处理模块用可以向所述多个电池模块中的电池模块的电池管理系统轮流发送第一指示信息以指示电池模块进行放电和充电，无需人工控制被检测电池模块的切换，能够提升检测多个电池模块的健康状态的效率。同时，所述电池模块的电芯包轮流执行先放电后充电的操作，能够使得检测完健康状态的电池模块有足够的功率作为备电电池，在对其他的一个电池模块进行健康状况的检测的过程中，检测完健康状态的电池模块与未被检测的电池模块能够一起作为备用电源，为目标供电对象提供足够的功率。
具体的，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。通过这种方式，该电芯包在放电或者充电过程中的电流稳定，因此在此基础上计算出的该第一电池模块中该电芯包的健康状态更准确。
下面以第一电池模块为例，介绍计算该多个电池模块中单个电池模块的健康状态的方法。
该电池系统控制第一电池模块中的电芯包执行放电和充电的操作，其中，该放电和充电的操作可以包含三种情况，下面对这三种情况进行介绍。
第一种情况，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，充电的电流不作限定。所述第一电池模块中的所述电池管理系统根据所述第一指示信息控制所述第一电池模块的电芯包执行放电和充电的操作，包括：所述第一电池模块中的所述电 池管理系统调高所述第一电池模块中的所述电芯包的电压，以使所述电芯包按照预设放电电流进行放电，直至所述电芯包的电压到达截止电压；然后，控制该第一电池模块中的所述电芯包充电直至充满。
第二种情况，所述执行充电和放电的操作的过程中，放电的电流不作限定，充电的电流为预设充电电流。所述第一电池模块中的所述电池管理系统根据所述第一指示信息控制所述第一电池模块的电芯包执行放电和充电的操作，包括：所述第一电池模块中的所述电池管理系统控制该第一电池模块中的所述电芯包放电直至到达截止电压；然后，所述第一电池模块中的所述电池管理系统调低所述第一电池模块中的所述电芯包的电压，以使所述电芯包按照预设充电电流进行充电，直至所述电芯包的电压充满。
第三种情况，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流。所述第一电池模块中的所述电池管理系统根据所述第一指示信息控制所述第一电池模块的电芯包执行放电和充电的操作，包括：首先，所述第一电池模块中的所述电池管理系统调高所述第一电池模块中的所述电芯包的电压，以使所述电芯包按照预设放电电流进行放电，直至所述电芯包的电压到达截止电压。然后，所述第一电池模块中的所述电池管理系统调低所述第一电池模块中的所述电芯包的电压，以使所述电芯包按照预设充电电流进行充电，直至所述电芯包的电压充满。
可选的，该电池系统为第一电源的备用电源，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。举例而言，现目标供电对象需要100瓦的功率，其中，放电产生的第一功率为10瓦，第一电源提供的第二功率为90瓦，该第一功率和第二功率和等于目标供电对象所需的功率。另外，该第一功率和第二功率可以为其他数值，此处仅为示例。通过这种方式，使得该检测电池健康状态的过程可以在该第一电源对该目标供电对象提供电能的过程中进行，不需要等到该第一电源无法对该目标供电对象提供电能时，再对该多个电池模块的健康状态进行检测，提升了检测电池模块健康状态的效率。
S302、所述电池系统记录目标时间。
具体的，所述目标时间为所述第一电池模块中的电芯包放电持续的时间，或者为所述第一电池模块中的电芯包充电持续的时间，或者为所述第一电池模块中的电芯包放电持续的时间和充电持续的时间。
针对上述提到的放电和充电的操作三种情况，至少存在三种记录所述目标时间的方式，以下对这三种方式进行介绍。
第一种记录目标时间的方式，针对上述提到的第一种情况，该第一电池模块的电池管理系统记录所述第一电池模块中按照预设放电电流放电持续的时间。
第二种记录目标时间的方式，针对上述提到的第二种情况，该第一电池模块的电池管理系统记录所述第一电池模块中按照预设充电电流充电持续的时间。
第三种记录目标时间的方式，针对上述提到的第三种情况，该第一电池模块的电池管理系统记录所述第一电池模块中按照预设放电电流放电持续的时间和按照预设充电电流充电持续的时间。
S303、所述电池系统根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
可选的，所述处理模块可以根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：所述处理模块接收所述第一电池模块中的电池管理系统发送的所述目标时间；所述处理模块根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
可选的，所述第一电池模块的电池管理系统可以根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
具体的，通过以上三种记录目标时间的方式，确定该第一电池模块中的电芯包的健康状态还存在差异，为了便于理解，下面分别讲述这三种方式下如何确定该第一电池模块中的电芯包的健康状态。
针对第一种记录目标时间的方式，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设放电电流放电持续的时间和预设放电电流确定所述第一电池模块中的所述电芯包的健康状态。举例而言，若该第一电池模块中的电芯包按照预设放电电流放电持续的时间为t 1，预设放电电流为I 1，该电芯包的额定容量为Q 0。该电芯包的健康状态SOH可以通过公式1-1计算，公式1-1如下：
Figure PCTCN2019083432-appb-000001
通过这种方式，该第一电池模块中的电池管理系统可以控制该第一电池模块中的电芯包按照预设放电电流放电，然后根据该放电持续的时间确定该第一电池模块中的电芯包的健康状态。由于该电芯包在放电过程中的放电电流稳定在预设放电电流，因此在此基础上计算出的该第一电池模块中的该电芯包的健康状态更准确，提高了检测电池健康状态的准确性；同时在该电池系统中，无需人工控制电池进行充放电，提升了检测该电池健康状态的效率。
另外，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，还可以包括：根据按照所述预设放电电流放电持续的时间，预设放电电流，第一荷电状态和第二荷电状态确定所述第一电池模块中的所述电芯包的健康状态。该第一荷电状态为该电芯包未进行放电之前的荷电状态，该第二荷电状态为该电芯包电芯包放电直至截止电压之后，未进行充电之前的荷电状态。
举例来说，若该第一电池模块中的电芯包按照预设放电电流放电持续的时间为t 2，预设放电电流为I 2，第一荷电状态为95％，第二荷电状态为5％。从荷电状态和电池容量的对应关系可知，电池从95％的荷电状态到5％的荷电状态减少的电容量为Q 1，该电池管理系统预存有荷电状态和电池容量的对应关系。则，该电芯包的健康状态SOH可以通过公式1-2计算，公式1-2如下：
Figure PCTCN2019083432-appb-000002
通过这种方式，在上种方式的基础上加入了对该第一电池模块中的电芯包的荷电状态的检测，能够得到更加准确的理论电容变换量，提高电池健康状态的准确性。
以下对第一荷电状态和第二荷电状态的获取做出介绍。在所述第一电池模块中的所述电池管理系统调高所述第一电池模块中的所述电芯包的电压之前，可以先确定该电芯包的荷电状态，该荷电状态可以称为第一荷电状态；以及在该电芯包的电压到达截止电压之后， 再次确定该电芯包的荷电状态，该荷电状态可以称为第二荷电状态。另外，该电池管理系统可以根据检测到的该电芯包的开路电压，从该电芯包的开路电压与荷电状态的对应关系可以确定该电芯包的荷电状态，该电池管理系统预存有该电芯包的开路电压与荷电状态的对应关系。
针对第二种记录目标时间的方式，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设充电电流充电持续的时间和预设充电电流确定所述第一电池模块中的所述电芯包的健康状态。举例而言，若该第一电池模块中的电芯包按照预设充电电流充电持续的时间为t 3，预设充电电流为I 3，该电芯包的额定容量为Q 0。该电芯包的健康状态SOH可以通过公式1-3计算，公式1-3如下：
Figure PCTCN2019083432-appb-000003
通过这种方式，该第一电池模块中的电池管理系统可以控制该第一电池模块中的电芯包按照预设充电电流充电，然后根据该充电持续的时间确定该第一电池模块中的电芯包的健康状态。由于此整个放电过程中的放电电流稳定在预设放电电流，因此在此基础上计算出的该第一电池模块中该电芯包的健康状态更准确，提高了检测电池健康状态的准确性；同时在该电池系统中，无需人工控制电池进行充放电，提升了检测该电池健康状态的效率。
另外，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，还可以包括：根据按照所述预设充电电流充电持续的时间，预设充电电流，第二荷电状态和第三荷电状态确定所述第一电池模块中的所述电芯包的健康状态。该第二荷电状态为该电芯包放电直至截止电压之后，未进行充电之前的荷电状态；该第三荷电状态为该电芯包充满电之后的荷电状态。
举例而言，若该第一电池模块中的电芯包按照预设放电电流充电持续的时间为t 4，预设充电电流为I 4，第二荷电状态为5％，第三荷电状态为90％。从荷电状态和电池容量的对应关系可知，电池从5％的荷电状态到90％的荷电状态增加的电容量为Q 2，该电池管理系统预存有荷电状态和电池容量的对应关系。则，该电芯包的健康状态SOH可以通过公式1-4计算，公式1-4如下：
Figure PCTCN2019083432-appb-000004
通过这种方式，在上种方式的基础上加入了对该第一电池模块中的电芯包的荷电状态的检测，能够得到更加准确的理论电容变换量，提高电池健康状态的准确性。
以下对第三荷电状态的获取做出介绍。在该第一电池模块中的电芯包充满之后，可以确定该电芯包的荷电状态，该荷电状态为第三荷电状态。另外，该电池管理系统可以根据检测到的该电芯包的开路电压，从该电芯包的开路电压与荷电状态的对应关系可以确定该电芯包的荷电状态，该电池管理系统预存有该电芯包的开路电压与荷电状态的对应关系。
针对第三种记录目标时间的方式，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设放电电流充电持续的时间确定所述第一电池模块中的所述电芯包的第一健康状态；根据按照所述预设充电电流充电持续的时间确定所述第一电池模块中的所述电芯包的第二健康状态；根据所述第一健康状态和所述第二健康状态确 定该第一电池模块中的所述电芯包的健康状态。。
举例而言，若该第一电池模块中的电芯包按照预设放电电流充电持续的时间为t 5，预设放电电流为I 5，该第一电池模块中的电芯包按照预设充电电流充电持续的时间为t 6，预设充电电流为I 6，该电芯包的额定容量为Q 0。该电芯包的健康状态SOH可以通过公式1-5、1-6、1-7计算，公式1-5、1-6、1-7如下：
Figure PCTCN2019083432-appb-000005
Figure PCTCN2019083432-appb-000006
SOH＝SOH 1*a+SOH 2*b      1-7
其中，SOH 1表示该第一电池模块中电芯包的第一健康状态，SOH 2表示该第一电池模块中的电芯包的第二健康状态，a表示第一健康状态的计算比例，b表示第二健康状态的计算比例。需要说明的是，a与b的和为1，a和b可以根据实际情况有多种取值，例如，a为0.5，b为0.5；a为0.7，b为0.3等取值。通过这种方式，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
另外，根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：根据按照所述预设放电电流充电持续的时间，预设放电电流，第一荷电状态和第二荷电状态确定所述第一电池模块中的所述电芯包的第三健康状态；根据按照所述预设充电电流充电持续的时间，预设充电电流，第二荷电状态和第三荷电状态确定所述第一电池模块中的所述电芯包的第四健康状态；所述第一电池模块中的所述电芯包的健康状态为所述第三健康状态和所述第四健康状态的平均值。该第一荷电状态为该电芯包未进行放电之前的荷电状态，该第二荷电状态为该电芯包放电直至截止电压之后，未进行充电之前的荷电状态；该第三荷电状态为该电芯包充满电之后的荷电状态。
举例而言，若该第一电池模块中的电芯包按照预设放电电流放电持续的时间为t 7，预设放电电流为I 7，该第一电池模块中的电芯包按照预设充电电流放电持续的时间为t 8，预设放电电流为I 8，第一荷电状态为90％，第二荷电状态为10％，第三荷电状态为95％。从荷电状态和电池容量的对应关系可知，电池从90％的荷电状态到10％的荷电状态减少的电容量为Q 3，电池从10％的荷电状态到95％的荷电状态增加的电容量为Q 4。则，该电芯包的健康状态SOH可以通过公式1-8、1-9、1-10计算，公式1-8、1-9、1-10如下：
Figure PCTCN2019083432-appb-000007
Figure PCTCN2019083432-appb-000008
SOH＝SOH 3*c+SOH 4*d      1-10
其中，SOH 3表示该第一电池模块中电芯包的第三健康状态，SOH 4表示该第一电池模块中的电芯包的第四健康状态，c表示第一健康状态的计算比例，d表示第二健康状态的计算比例。需要说明的是，c与d的和为1，c和d可以根据实际情况有多种取值，例如，c为0.5，d为0.5；c为0.7，d为0.3等取值。通过这种方式，在上种方式的基础上加入了对该 第一电池模块中的电芯包的荷电状态的检测，能够得到更加准确的理论电容变换量，提高电池健康状态的准确性。
可选的，根据所述目标时间确定所述第一电池模块中电芯包的健康状态之后，所述处理模块按照顺序控制下一个电池模块执行放电和充电的操作，然后，所述下一个电池模块中的电池管理系统，记录所述下一个电池模块对应的目标时间，所述下一个电池模块对应的目标时间为所述下一个电池模块中的电芯包放电持续的时间，或者为所述下一个电池模块中的电芯包充电持续的时间，或者为所述下一个电池模块中的电芯包放电持续的时间和充电持续的时间；所述下一个电池模块中的电池管理系统或者所述处理模块，根据所述下一个电池模块对应的目标时间确定所述下一个电池模块的健康状态。
需要说明的是，所述下一个电池模块中的电池管理系统，根据所述第一指示信息控制所述下一个电池模块中的电芯包放电和/或充电的方式；所述下一个电池模块中的电池管理系统，记录所述下一个电池模块对应的目标时间的方式；所述下一个电池模块中的电池管理系统或者所述处理模块，根据所述下一个电池模块对应的目标时间确定所述下一个电池模块的健康状态的方式；均可以采用上述介绍的第一电池模块中使用的方式。通过这种方法，该电池系统可以按照顺序检测该多个电池模块中每个模块的健康状态，无需人工控制被检测电池模块的切换，提升检测多个电池模块的健康状态的效率。
下面对在图2所示方法实施例的基础上延伸出的一些可能方案进行介绍。
在一种可选的方案中，控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作之前，还可以包括，确定该多个电池模块满足检测开始条件。
具体的，该检测开始条件可以为该处理模块接收到管理器发送的开始检测电池健康状态的指令，还可以为所述多个电池模块中的至少一个电池模块在第一预设时间内无健康状态的更新。需要说明的是，还可以存在其他的检测开始条件，此处不作限定。
在又一种可选的方式中，控制所述多个电池模块各个的电池模块的电芯包轮流执行放电和充电的操作之前，该处理模块确定该多个电池模块满足检测开始条件之后，还可以包括：该处理模块禁止该多个电池模块充电。该处理模块禁止该多个电池模块充电之后，该多个电池模块在第一预设时间内处于待机状态。需要说明的是，待机状态为该多个电池模块不进行实质性工作(充电或者放电)的状态，但如果此时需要该多个电池模块对该目标供电对象提供电能，该多个电池模块也可以对该目标供电对象提供电能。通过这种方式，能够使得该多个电池模块的开路电压稳定，避免由于开路电压不稳定而造成的检测到健康状态不准确的问题。
在又一种可选的方式中，该处理模块禁止该电源模块对该多个电池模块充电之后，该处理模块为该多个电池模块加入禁止充电的标志和/或检测健康状态的标志。通过这种方式，可以避免其他设备或者管理人员对该多个电池模块进行其他不必要的操作，避免对其他设备或者管理人员该多个电池模块的健康状态的检测结果造成影响。
在又一种可选的方式中，控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作之前，还可以包括，该处理模块对该多个电池模块进行排序。可选的，排序的方式可以为，根据所述多个电池模块中每个电池模块的上一次检测的健康状态，使用时间，距离上一次检测健康状态的时间中的至少一项进行排序。举例而言，可以根据所述 多个电池模块中每个电池模块的上一次检测的健康状态从小到大的顺序进行排序，这样可以方便更加快捷地找出健康状态不合格的电池模块。
在又一种可选的方案中，该电池健康状态的检测方法还可以包括，该处理模块在检测电池健康状态的过程中，确定该多个电池模块满足检测结束条件。该检测结束条件包括所述多个电池模块中每个电池模块的健康状态计算完成，所述多个电池模块中任意一个电池模块出现异常，所述多个电池模块中任意一个电池模块的检测时间大于第二预设时间，所述多个电池模块中任意一个电池模块的电流不在预设范围内的持续时间大于第三预设时间中的至少一项。需要说明的是，还可以存在其他的检测结束条件，此处不作限定。
在又一种可选的方案中，该处理模块确定该多个电池模块满足检测结束条件之后，该处理模块还可以向管理器发送检测结果和结束原因。通过这种方式，可以使得管理人员了解检测结果和结束原因，若结束原因为异常所致，方便管理人员进行对应于该异常的维护。
在又一种可选的方案中，该处理模块确定该多个电池模块满足检测结束条件之后，该处理模块还可以清除该多个禁止充电标志和/或检测健康状态的标志。通过这种方式，使得检测结束之后，其他设备或者管理人员可以对该多个电池模块进行操作。
在图2所示的方法中，通过控制该多个电池模块中的电池模块轮流执行放电和充电的操作，然后根据目标时间确定该每个电池模块的健康状态，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。并且，所述多个电池模块中除任意一个电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，能够保证在该多个电池模块中的任意一个电池模块在检测健康状态的过程中，除该任意一个电池模块的其他电池模块可以正常为目标供电对象提供电能，避免在电池健康状态的检测过程中，无法对目标供电对象提供足够的电能的问题。
参见图4，是本申请实施例提供的一种电池模块的示意图，该电池模块40包括电池管理系统401和由该电池管理系统控制的电芯包402。其中，电芯包402用于储存电能；电池管理系统401是用于对电芯包进行管理的设备，能够监控该电芯包的状态，可以防止该电芯包出现过充电和过放电，延长电芯包的使用寿命。电池管理系统的主要功能有：电芯包荷电状态的检测，监测电芯包的工作状态(端侧电压、电流、温度等参数)，检测该多个电池模块的总电压，检测该对个电池模块的总电流，显示和/或记录采集到的数据，与相连的其他设备进行通讯等。
参见图5，是本申请实施例提供又一种电池健康状态检测方法的流程图，该方法可以基于图4所示的电池系统来实现，该方法包括但不限于如下步骤。
S501、电池模块根据处理模块发送的第一指示信息控制所述电池模块中的电芯包执行放电和充电的操作。
其中，所述第一检测指令用于指示所述电池模块放电和充电。可选的，电池模块根据处理模块发送的第一指示信息控制所述电池模块中的电芯包执行放电和充电的操作，包括：该电池模块中的电池管理系统根据处理模块发送的第一指示信息控制所述电池模块中的电芯包执行放电和充电的操作。其中，该放电和充电的操作可以包含三种情况，该三种情况可以参照图3中步骤S301中介绍的该放电和充电的操作可以包含的三种情况，此处不再赘述。
S502、所述电池模块记录目标时间。
具体的，所述目标时间为所述电池模块中的电芯包放电持续的时间，或者为所述电池模块中的电芯包充电持续的时间，或者为所述电池模块中的电芯包放电持续的时间和充电持续的时间。可选的，所述电池模块记录所述目标时间，包括：所述电池模块中的电池管理系统记录所述目标时间。具体的，记录所述目标时间的方式，可以参照图3中步骤S302中介绍的记录所述目标时间的方式，此处不再赘述。
S503、所述电池模块根据所述目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以用于所述处理模块确定所述电芯包的健康状态。
可选的，所述电池模块根据所述目标时间确定所述电芯包的健康状态，包括：所述电池模块的电池管理系统根据所述目标时间确定所述电芯包的健康状态。具体的，根据所述目标时间确定所述电芯包的健康状态的方式，可以参照图3中步骤S303中介绍的如何根据目标时间确定该第一电池模块中的电芯包的健康状态的方式，此处不再赘述。
通过这种方法，能够根据处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，通过记录所述目标时间，可以根据所述目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以使该处理模块可以根据所述目标时间计算所述电芯包的健康状态。检测由多个这种电池模块组成的电池系统时，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。
在又一种可选的方案中，所述电池模块为电池系统包含的多个电池模块中的一个电池模块，所述多个电池模块中除所述一个电池模块的其他电池模块的功率之和高于目标供电对象所需的功率；所述除所述一个电池模块的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
通过这种方式，若在该一个电池模块进行健康状态检测的过程中，需要该多个电池模块对目标供电对象进行供电，由于该多个电池模块中除该一个电池模块的其余电池模块的功率不小于该目标供电对象所需的功率，则该多个电池模块能够为该目标供电对象提供足够的功率，避免在电池检测过程中，无法对目标供电对象提供足够的功率的问题。
在又一种可选的方案中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，包括：所述根据按照预设放电电流放电持续的时间确定所述电芯包的第一健康状态；所述根据按照预设充电电流充电持续的时间确定所述电芯包的第二健康状态；根据所述第一健康状态和所述第二健康状态确定所述电芯包的健康状态。
通过这种方法，将所述第一健康状态和所述第二健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量，提高检测电池健康状态的准确性。
在又一种可选的方案中，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，具体为：根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；根 据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；根据所述第三健康状态和所述第四健康状态确定所述电芯包的健康状态。
通过这种电方法，将所述第三健康状态和所述第四健康状态的平均值作为所述电池模块中的所述电芯包的健康状态，能够综合考虑该电芯包进行充电、放电时的电池容量以及荷电状态，进一步提高检测电池健康状态的准确性。
在又一种可选的方案中，执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。通过这种方式，该电芯包在放电或者充电过程中的电流稳定，因此在此基础上计算出的该第一电池模块中该电芯包的健康状态更准确。
在又一种可选的方案中，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。通过这种方式，使得该检测电池健康状态的过程可以在该第一电源对该目标供电对象提供电能的过程中进行，不需要等到该第一电源无法对该目标供电对象提供电能时，再对电池模块的健康状态进行检测，提升了检测电池模块健康状态的效率。
在图5所述的方法中，能够根据处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，通过记录所述目标时间，可以根据目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以使该处理模块可以根据所述目标时间计算所述电芯包的健康状态。通过这种方法，在检测由多个这种电池模块组成的电池系统时，能够按照次序检测该多个电池模块中每个模块的健康状态，提升检测电池的健康状态的准确性。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (28)

  1. 一种电池系统，其特征在于，所述电池系统包括处理模块和多个电池模块，所述多个电池模块中每个电池模块各自包括电池管理系统和由所述电池管理系统控制的电芯包，其中：
    所述处理模块，用于控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作；所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，所述第一电池模块为所述多个电池模块中任意一个电池模块；
    所述第一电池模块中的电池管理系统，用于记录目标时间，所述目标时间为所述第一电池模块中的电芯包放电持续的时间，或者为所述第一电池模块中的电芯包充电持续的时间，或者为所述第一电池模块中的电芯包放电持续的时间和充电持续的时间；
    所述第一电池模块中的电池管理系统或者所述处理模块，用于根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
  2. 根据权利要求1所述的电池系统，其特征在于，所述电池系统为第一电源的备用电源；所述多个电池模块中除正在执行放电和充电的操作的电池模块之外的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
  3. 根据权利要求1或2所述的电池系统，其特征在于，所述处理模块，用于控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作，具体为：
    所述处理模块用于，向所述多个电池模块中的每个电池模块的电池管理系统轮流发送第一指示信息，所述第一指示信息用于指示所述电池模块放电和充电；
    所述每个电池模块的电池管理系统用于，根据接收到的所述第一指示信息控制所述每个电池模块的电芯包执行放电和充电的操作。
  4. 根据权利要求1-3任一项所述的电池系统，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。
  5. 根据权利要求1-4任一项所述的电池系统，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：
    根据按照所述预设放电电流放电持续的时间确定所述第一电池模块中电芯包的第一健康状态；
    根据按照所述预设充电电流充电持续的时间确定所述第一电池模块中电芯包的第二健康状态；
    根据所述第一健康状态和所述第二健康状态确定所述第一电池模块中电芯包的健康状态。
  6. 根据权利要求1-4任一项所述的电池系统，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：
    根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述第一电池模块中的电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；
    根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述第一电池模块中的电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；
    根据所述第三健康状态和所述第四健康状态确定所述第一电池模块中的所述电芯包的健康状态。
  7. 根据权利要求1-6任一项所述的电池系统，其特征在于，所述处理模块，用于根据所述目标时间确定所述第一电池模块中电芯包的健康状态，具体为：
    接收所述第一电池模块中的电池管理系统发送的所述目标时间；
    根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
  8. 根据权利要求1-7任一项所述的电池系统，其特征在于，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。
  9. 一种电池模块，其特征在于，所述电池模块为电池系统包含的多个电池模块中的一个电池模块，所述电池模块包括电池管理系统和由所述电池管理系统控制的电芯包，其中：
    所述电池管理系统用于，根据所述电池系统中的处理模块发送的第一指示信息控制所述电芯包执行放电和充电的操作，所述第一检测指令用于指示所述电池模块放电和充电；
    所述电池管理系统还用于，记录目标时间，所述目标时间为所述电池模块中的电芯包放电持续的时间，或者为所述电池模块中的电芯包充电持续的时间，或者为所述电池模块中的电芯包放电持续的时间和充电持续的时间；
    所述电池管理系统还用于，根据所述目标时间确定所述电芯包的健康状态；或者向所述电池系统中的处理模块发送所述目标时间，以用于所述处理模块确定所述电芯包的健康状态。
  10. 根据权利要求9所述的电池模块，所述多个电池模块中除所述一个电池模块的其他电池模块的功率之和高于目标供电对象所需的功率；所述除所述一个电池模块的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
  11. 根据权利要求9或10所述的电池模块，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。
  12. 根据权利要求9-11任一项所述的电池模块，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为所述预设放电电流且充电的电流为所述预设充电电流；所述电池管理系统还用于根据所述目标时间确定所述电芯包的健康状态，具体为：
    根据按照所述预设放电电流放电持续的时间确定所述电芯包的第一健康状态；
    根据按照所述预设充电电流充电持续的时间确定所述电芯包的第二健康状态；
    根据所述第一健康状态和所述第二健康状态确定所述电芯包的健康状态。
  13. 根据权利要求9-11任一项所述的电池模块，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为所述预设放电电流且充电的电流为所述预设充电电流；所述电池管理系统还用于根据所述目标时间确定所述电芯包的健康状态，具体为：
    根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；
    根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；
    根据所述第三健康状态和所述第四健康状态确定所述电芯包的健康状态。
  14. 根据权利要求9-13任一项所述的电池模块，其特征在于，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。
  15. 一种电池健康状态的检测方法，其特征在于，所述方法应用于电池系统，所述电池系统包括多个电池模块和处理模块，所述多个电池模块中每个电池模块各自包括电池管理系统和由所述电池管理系统控制的电芯包，所述方法包括：
    电池系统控制所述多个电池模块中的各个电池模块的电芯包轮流执行放电和充电的操作；所述多个电池模块中除第一电池模块的其他电池模块的电芯包的功率之和高于目标供电对象所需的功率，所述第一电池模块为所述多个电池模块中任意一个电池模块；
    所述电池系统记录目标时间，所述目标时间为所述第一电池模块中的电芯包放电持续的时间，或者为所述第一电池模块中的电芯包充电持续的时间，或者为所述第一电池模块中的电芯包放电持续的时间和充电持续的时间；
    所述电池系统根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
  16. 根据权利要求15所述的方法，其特征在于，所述电池系统为第一电源的备用电源；所述多个电池模块中除正在执行放电和充电的操作的电池模块之外的其他电池模块用于在 所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
  17. 根据权利要求15或16所述的方法，其特征在于，所述电池系统控制所述多个电池模块中各个电池模块的电芯包轮流执行放电和充电的操作，包括：
    所述处理模块向所述多个电池模块中的每个电池模块的电池管理系统轮流发送第一指示信息，所述第一指示信息用于指示所述电池模块放电和充电；
    所述每个电池模块的电池管理系统根据接收到的所述第一指示信息控制所述每个电池模块的电芯包执行放电和充电的操作。
  18. 根据权利要求15-17任一项所述的方法，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。
  19. 根据权利要求15-18任一项所述的方法，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：
    根据按照所述预设放电电流放电持续的时间确定所述第一电池模块中电芯包的第一健康状态；
    根据按照所述预设充电电流充电持续的时间确定所述第一电池模块中电芯包的第二健康状态；
    根据所述第一健康状态和所述第二健康状态确定所述第一电池模块中电芯包的健康状态。
  20. 根据权利要求15-18任一项所述的电池系统，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：
    根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述第一电池模块中的电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；
    根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述第一电池模块中的电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；
    根据所述第三健康状态和所述第四健康状态确定所述第一电池模块中的所述电芯包的健康状态。
  21. 根据权利要求15-20任一项所述的方法，其特征在于，所述电池系统根据所述目标时间确定所述第一电池模块中电芯包的健康状态，包括：
    所述处理模块接收所述第一电池模块中的电池管理系统发送的所述目标时间；
    所述处理模块根据所述目标时间确定所述第一电池模块中电芯包的健康状态。
  22. 根据权利要求15-21任一项所述的方法，其特征在于，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。
  23. 一种电池健康状态的检测方法，其特征在于，包括：
    电池模块根据处理模块发送的第一指示信息控制所述电池模块中的电芯包执行放电和充电的操作，所述第一检测指令用于指示所述电池模块放电和充电；
    所述电池模块记录目标时间，所述目标时间为所述电池模块中的电芯包放电持续的时间，或者为所述电池模块中的电芯包充电持续的时间，或者为所述电池模块中的电芯包放电持续的时间和充电持续的时间；
    所述电池模块根据所述目标时间确定所述电芯包的健康状态；或者向所述处理模块发送所述目标时间，以用于所述处理模块确定所述电芯包的健康状态。
  24. 根据权利要求23所述的方法，所述电池模块为电池系统包含的多个电池模块中的一个电池模块，所述多个电池模块中除所述一个电池模块的其他电池模块的功率之和高于目标供电对象所需的功率；所述除所述一个电池模块的其他电池模块用于在所述第一电源无法对所述目标供电对象供电时为所述目标供电对象供电。
  25. 根据权利要求23或24所述的方法，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流，或者充电的电流为预设充电电流，或者放电的电流为所述预设放电电流且充电的电流为所述预设充电电流。
  26. 根据权利要求23-25任一项所述的方法，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，包括：
    根据按照所述预设放电电流放电持续的时间确定所述电芯包的第一健康状态；
    根据按照所述预设充电电流充电持续的时间确定所述电芯包的第二健康状态；
    根据所述第一健康状态和所述第二健康状态确定所述电芯包的健康状态。
  27. 根据权利要求23-25所述的方法，其特征在于，所述执行充电和放电的操作的过程中，放电的电流为预设放电电流且充电的电流为预设充电电流；所述根据所述目标时间确定所述电芯包的健康状态，包括：
    根据按照所述预设放电电流放电持续的时间，第一荷电状态，第二荷电状态确定所述电芯包的第三健康状态，所述第一荷电状态为所述电芯包未进行放电之前的荷电状态，所述第二荷电状态为所述电芯包放电直至截止电压之后，未进行充电之前的荷电状态；
    根据按照所述预设充电电流充电持续的时间，所述第二荷电状态，第三荷电状态确定所述电芯包的第四健康状态，所述第三荷电状态为所述电芯包充满电之后的荷电状态；
    根据所述第三健康状态和所述第四健康状态确定所述电芯包的健康状态。
  28. 根据权利要求23-27任一项所述的方法，其特征在于，所述放电产生的第一功率用于为目标供电对象供电，所述第一功率与第二功率之和等于目标供电对象所需的功率，所述第二功率由所述第一电源提供。
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