CN112467822A - Battery management method, device and system - Google Patents

Battery management method, device and system Download PDF

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Publication number
CN112467822A
CN112467822A CN202011105521.5A CN202011105521A CN112467822A CN 112467822 A CN112467822 A CN 112467822A CN 202011105521 A CN202011105521 A CN 202011105521A CN 112467822 A CN112467822 A CN 112467822A
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CN
China
Prior art keywords
battery
charge
batteries
discharge
acquiring
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CN202011105521.5A
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Chinese (zh)
Inventor
陈雪强
张加深
胡殊
杨智育
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Csic Yuanzhou (beijing) Science & Technology Co ltd
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Csic Yuanzhou (beijing) Science & Technology Co ltd
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Priority to CN202011105521.5A priority Critical patent/CN112467822A/en
Publication of CN112467822A publication Critical patent/CN112467822A/en
Pending legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to the technical field of lithium ion batteries, in particular to a battery management method, a device and a system, wherein the method comprises the following steps: acquiring initial state parameters of a plurality of batteries; detecting whether the battery meets the standard of forming a battery pack or not according to the initial state parameters; if yes, acquiring charge and discharge parameters of the plurality of batteries during charge and discharge, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet charge and discharge standards or not according to the charge and discharge parameters; after the battery pack is used for a preset time, acquiring the charge state of the battery, and performing battery modeling calculation to obtain charge state data; judging whether the battery is in a balanced state or not according to preset reference conditions and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state; and acquiring the charging and discharging condition of the battery, and carrying out corresponding prompt according to the charging and discharging condition. The invention can better manage the lithium ion battery to prolong the service life of the battery.

Description

Battery management method, device and system
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery management method, device and system.
Background
Compared with other types of energy storage batteries, the lithium ion battery has the advantages of high energy and power density, long cycle life, environmental protection and the like, so that the lithium ion battery is widely applied to life.
In the conventional battery management method, an equalization control method is generally used for controlling the residual capacity of each battery to be the same in the charging and discharging processes of the battery pack, so that the condition of overcharging or overdischarging of the batteries is avoided.
However, besides the lithium ion battery cannot be overcharged or overdischarged, the lithium ion battery has poor thermal stability and consistency, and the lithium ion battery has more strict requirements on the application environment; therefore, the conventional battery management method has incomplete protection on the lithium ion battery and cannot fully prolong the service time of the lithium ion battery.
Disclosure of Invention
The invention aims to provide a battery management method which can better manage a lithium ion battery so as to achieve the characteristic of prolonging the service time of the battery better.
The above object of the present invention is achieved by the following technical solutions:
in one aspect, a battery management method is provided, and the method is applied to a battery management system, wherein the system comprises a plurality of batteries which form a battery pack;
acquiring initial state parameters of a plurality of batteries;
detecting whether the battery meets the standard of forming a battery pack or not according to the initial state parameters;
if yes, acquiring charge and discharge parameters of the plurality of batteries during charge and discharge, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet charge and discharge standards or not according to the charge and discharge parameters;
after the battery pack is used for a preset time, acquiring the charge states of a plurality of batteries, and performing battery modeling calculation to obtain charge state data;
judging whether the battery is in a balanced state or not according to preset reference conditions and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and acquiring the charging and discharging condition of the battery, and carrying out corresponding prompt according to the charging and discharging condition.
The present invention in a preferred example may be further configured such that the initial state parameters are initial terminal voltages of the plurality of batteries, initial capacities of the plurality of batteries, and the detecting whether the batteries meet the criteria for constituting the battery pack according to the initial state parameters includes:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to a user handheld terminal;
judging whether the initial capacitances meet the standard of a battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
In a preferred example of the present invention, the charge and discharge parameters include charge and discharge voltages of a plurality of batteries and a battery temperature, and the detecting whether the charge and discharge conditions of the plurality of batteries within the preset time meet the charge and discharge standard includes:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
In a preferred example, the method may further include obtaining states of charge of the plurality of batteries, and performing battery modeling calculation to obtain the state of charge data includes:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and obtaining the charge state of the optimal battery meeting the conditions through calculation according to the using terminal voltage and the using temperature.
In a preferred example of the present invention, the obtaining of the charging and discharging condition of the battery, and the performing the corresponding prompt according to the charging and discharging condition may further include:
acquiring voltage parameter historical data of a plurality of batteries;
judging whether the voltage of the battery terminal has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
and judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the handheld terminal of the user.
The invention may further be configured in a preferred example, the method further comprising:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery is discharged, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
The invention may further be configured in a preferred example, the method further comprising:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the service condition.
In another aspect, a battery management apparatus is provided, including:
the first acquisition module is used for acquiring initial state parameters of the plurality of batteries;
the first detection module is used for detecting whether the battery meets the standard of forming the battery pack or not according to the initial state parameter;
the second detection module is used for acquiring charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet the charge and discharge standards or not according to the charge and discharge parameters;
the second acquisition module is used for acquiring the charge states of the batteries after the battery pack is used for preset time, and performing battery modeling calculation to obtain charge state data;
the processing module is used for judging whether the battery is in a balanced state or not according to a preset reference condition and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and the prompt module is used for acquiring the charging and discharging conditions of the battery and carrying out corresponding prompt according to the charging and discharging conditions.
The present invention may further be configured in a preferred example, wherein the first detecting module is specifically configured to:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to a user handheld terminal;
judging whether the initial capacitances meet the standard of a battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
The present invention may be further configured in a preferred example, wherein the second detection module is specifically configured to:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
In a preferred example of the present invention, the second obtaining module is specifically configured to:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and obtaining the charge state of the optimal battery meeting the conditions through calculation according to the using terminal voltage and the using temperature.
In a preferred example of the present invention, the prompting module is specifically configured to:
acquiring voltage parameter historical data of a plurality of batteries;
judging whether the battery voltage has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the user handheld terminal;
the present invention in a preferred example may be further configured such that the module further comprises:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery is discharged, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
The present invention in a preferred example may be further configured such that the module further comprises:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the service condition.
In another aspect, a battery management system is provided, including:
the first acquisition device is used for acquiring initial state parameters of the batteries;
the first detection device is used for detecting whether the battery meets the standard of forming the battery pack or not according to the initial state parameter;
the second detection device is used for acquiring charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet the charge and discharge standards or not according to the charge and discharge parameters;
the second acquisition device is used for acquiring the charge states of the batteries after the battery pack is used for preset time, and performing battery modeling calculation to obtain charge state data;
the processing device is used for judging whether the battery is in a balanced state or not according to a preset reference condition and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and the prompting device is used for acquiring the charging and discharging condition of the battery and carrying out corresponding prompting according to the charging and discharging condition.
The present invention may further be configured in a preferred example, wherein the first detecting device is specifically configured to:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to a user handheld terminal;
judging whether the initial capacitances meet the standard of a battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
The present invention may further be configured in a preferred example, wherein the second detecting device is specifically configured to:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
The present invention may further be configured in a preferred example, that the second obtaining means is specifically configured to:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and obtaining the charge state of the optimal battery meeting the conditions through calculation according to the using terminal voltage and the using temperature.
In a preferred example, the present invention may be further configured such that the prompting device is specifically configured to:
acquiring voltage parameter historical data of a plurality of batteries;
judging whether the battery voltage has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the user handheld terminal;
the present invention in a preferred example may be further configured such that the apparatus further comprises:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery is discharged, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
The present invention in a preferred example may be further configured such that the apparatus further comprises:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the service condition.
In another aspect, a battery management apparatus comprises a memory and a processor, the memory having stored thereon a computer program that is loadable by the processor and operable to perform any of the methods of the first aspect.
When the plurality of batteries form the battery pack, whether the plurality of batteries meet the standard for forming the battery pack is firstly checked, then, the charging and discharging test within the preset time is carried out, whether the battery pack meets the charging and discharging standard is detected, and the shortening of the service time of the battery pack, which is possibly caused by the initial state parameters of the batteries during the normal use of the batteries, is reduced after the early detection; the invention can detect the battery from a plurality of states of the battery, and ensure the stability of the battery, thereby better prolonging the service time of the battery.
Drawings
Fig. 1 is a block diagram of a battery management method according to an embodiment of the present invention.
Fig. 2 is a schematic flowchart of a battery management apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a battery management system according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The first embodiment is as follows:
an embodiment of the present invention provides a battery management method, which is shown in fig. 1 and includes:
the method is applied to a battery management system, and the system comprises the following steps: a plurality of batteries form a battery pack;
101. acquiring initial state parameters of a plurality of batteries;
102. detecting whether the battery meets the standard of forming the battery pack or not according to the initial state parameters;
103. if yes, acquiring charge and discharge parameters of the plurality of batteries during charge and discharge, and detecting whether the charge and discharge conditions of the plurality of batteries in the preset time meet the charge and discharge standard or not according to the charge and discharge parameters;
104. after the battery pack is used for a preset time, acquiring the charge states of a plurality of batteries, and performing battery modeling calculation to obtain charge state data;
105. judging whether the battery is in a balanced state or not according to preset reference conditions and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
106. and acquiring the charge and discharge condition of the battery, and carrying out corresponding prompt according to the charge and discharge condition.
In a preferred embodiment of the present invention, the process of acquiring the initial state parameters of the plurality of batteries in step 101 may be:
the initial state parameters comprise initial terminal voltages and initial capacities of the plurality of batteries;
performing terminal voltage measurement on all single batteries in the battery pack for preset times to generate terminal voltage measurement data;
removing the terminal voltage maximum value and the terminal voltage minimum value from the terminal voltage measurement data to generate new terminal voltage measurement data;
averaging the new terminal voltage measurement data to obtain an initial terminal voltage;
capacitance measurement is carried out on all single batteries in the battery pack for preset times to generate capacitance measurement data;
in the capacitance measurement data, the capacitance that occurs the most frequently is the initial capacitance.
When the initial state parameters of a plurality of batteries are obtained, the data are obtained by using a mode of averaging in multiple measurements for a single battery, meanwhile, the average value is not calculated between the maximum value and the minimum value in the multiple measurements, the influence on the accuracy of the result caused by the occurrence of terminal data is avoided, and the data are enabled to have higher accuracy by the obtaining mode.
Preferably, before step 101, it is further necessary to perform:
acquiring the type of each battery in the battery pack; if the batteries are different in type, acquiring the positions of the batteries different in type, and sending message prompts different in battery type to the user handheld terminal.
Batteries of different types form a battery pack, and the batteries are possibly influenced by each other due to different materials and conductive properties of the batteries, so that the batteries cannot be maintained better; the type of a plurality of batteries detecting each battery when constituting the group battery can guarantee that the group battery can carry out better maintenance to reach the effect of extension group battery live time.
In a preferred embodiment of the present invention, the step 102 of detecting whether the battery meets the standard of the battery pack according to the initial state parameter may include:
201. judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to the user handheld terminal;
specifically, the initial terminal voltages of a plurality of batteries are obtained, and if the initial terminal voltages are the same, the standards of battery packs are met;
if the initial terminal voltages of the batteries are different, acquiring a maximum terminal voltage value and a minimum terminal voltage value in the initial terminal voltages of the batteries;
calculating a terminal voltage difference value according to the terminal voltage maximum value and the terminal voltage minimum value;
and if the terminal voltage difference value accords with the preset terminal voltage difference value, setting the total voltage as the minimum value of the initial terminal voltage, and sending a first message prompt that the current voltage of the battery is the minimum value of the initial terminal voltage to the user handheld terminal.
The method comprises the steps of detecting initial terminal voltages of a plurality of batteries, judging whether a difference value between the maximum value of the initial terminal voltages and the minimum value of the initial terminal voltages accords with a preset terminal voltage difference value or not when the initial terminal voltages of the plurality of batteries are different, setting total voltage as the minimum value of the initial terminal voltages in the plurality of batteries if the difference value accords with the preset terminal voltage difference value, switching on by using the minimum value of the initial terminal voltages, and protecting other batteries in the battery pack so as to prolong the service time of the battery pack.
202. Judging whether the initial capacitances meet the standard of the battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
specifically, the initial capacities of the plurality of batteries are obtained, and if the initial capacities of the plurality of batteries are the same, the battery pack conforms to the standard of the battery pack;
if the initial capacities of the batteries are different, acquiring historical data parameters in the server, wherein the historical data parameters comprise equipment using the batteries and power consumption of the equipment in unit time;
calculating the service time of the battery according to the power consumption of the equipment in unit time and the initial capacity of the battery;
acquiring the minimum use time of the use times of the plurality of batteries;
and calculating the difference between the normal use time and the minimum use time.
203. And sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
Specifically, according to the minimum service time, the abnormal capacitance is sent to the handheld terminal of the user, the minimum service time is expected to be used, and the second message prompt which shortens the difference time compared with the normal battery use is given;
acquiring whether a user changes a battery command or not according to the second message prompt;
and if the battery is replaced, acquiring the position of the battery with abnormal initial capacitance, and transmitting the position to the handheld terminal of the user.
When the plurality of batteries are switched on, acquiring initial electric capacities of the plurality of batteries, and calculating the service time of the plurality of batteries according to the initial electric capacities and the power consumption per unit time, wherein different service times of the plurality of batteries may influence the charging and discharging of the batteries; after the electric capacities of the batteries are detected to be different, the electric capacities are fed back to a user, and the user can fully know the state of the battery pack in such a way, so that unnecessary damage to the batteries is reduced, and the batteries can be maintained better.
In a preferred embodiment of the present invention, if step 103 meets the charging/discharging parameters of the plurality of batteries during charging/discharging, and detecting whether the charging/discharging conditions of the plurality of batteries within the preset time meet the charging/discharging criteria according to the charging/discharging parameters includes:
the charge and discharge parameters comprise the charge and discharge terminal voltage and the temperature of the battery;
301. judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
specifically, the charging end voltage and the discharging end voltage of a single battery are obtained, and the charging measurement voltage difference and the discharging measurement voltage difference of the single battery are calculated;
if the charging measurement voltage difference is higher than at least one of the preset maximum charging voltage threshold value and the preset minimum charging voltage threshold value, the charging measurement voltage difference does not accord with the charging and discharging standard;
if the discharge measurement voltage difference is higher than at least one of the preset maximum discharge voltage threshold value and the preset minimum discharge voltage threshold value, the discharge measurement voltage difference does not accord with the charge-discharge standard;
in the charging and discharging process, a single voltage has a large charging and discharging measurement voltage difference, and the single battery is proved to have problems and not accord with the charging and discharging standard; when the battery pack is charged and discharged integrally, the charging and discharging of the whole battery pack can be influenced due to the problem of a single battery; the charging and discharging measurement terminal voltage of a single battery is detected, so that the single battery in the battery pack is ensured not to have problems, and the normal use of the whole battery pack is further ensured.
Acquiring charging terminal voltages of a plurality of batteries during charging;
calculating a charging voltage difference between a maximum charging terminal voltage and a minimum charging terminal voltage in the battery pack according to the charging terminal voltages of the plurality of batteries;
acquiring charging terminal voltage historical data of the maximum charging terminal voltage and the minimum charging terminal voltage in the battery pack when the equipment in the server is charged;
according to the historical charging end voltage data, calculating a charging end voltage difference value of the equipment during charging, namely the preset charging end voltage;
calculating the ratio of the charging voltage difference to the preset charging end voltage, and if the ratio is higher than a preset range value, determining that the ratio does not accord with the charging standard;
acquiring discharge end voltages of a plurality of batteries during discharge;
calculating a discharge voltage difference between the maximum discharge terminal voltage and the minimum discharge terminal voltage in the battery pack according to the discharge terminal voltages of the plurality of batteries;
acquiring discharge end voltage historical data of the maximum discharge end voltage and the minimum discharge end voltage of the equipment in the server during discharge;
according to the historical data of the voltage of the discharge end, calculating the voltage difference value of the discharge end of the equipment during discharge, namely the voltage of the preset discharge end;
calculating the ratio of the discharge voltage difference to a preset discharge end voltage, and if the ratio is higher than a preset range value, determining that the ratio does not accord with a discharge standard;
detecting the charging and discharging terminal voltages of a plurality of batteries in the battery pack, and if two different batteries are found to have charging voltage difference and discharging voltage difference, and the ratio of the charging voltage difference to the preset charging terminal voltage and the ratio of the discharging voltage difference to the preset discharging voltage difference exceed preset range values, the plurality of batteries in the battery pack are influenced mutually, so that the service time of the battery pack is reduced; when obvious charging voltage difference and discharging voltage difference occur, the user is informed in a message reminding mode, so that the user can find the problem of the battery pack and the voltage in the battery pack as soon as possible and replace the battery pack as soon as possible, and the effect of prolonging the service time of the battery pack is achieved.
Acquiring the charging temperatures of a plurality of time points when a single battery is charged and the discharging temperatures of a plurality of time points when the single battery is discharged;
calculating a charging temperature change rate in unit time according to the plurality of charging temperatures;
if the charging temperature change rate does not accord with the preset charging temperature change rate, the charging standard is not met;
calculating the discharge temperature change rate in unit time according to the plurality of discharge temperatures;
and if the discharge temperature change rate does not accord with the preset discharge temperature change rate, the discharge temperature change rate does not accord with the charging standard.
302. If not, further detecting whether the battery meets the charge-discharge standard within a preset time;
specifically, the charging and discharging terminal voltage and the charging and discharging temperature of the battery which does not meet the charging standard are further detected within the preset time, if the detection results of multiple times are consistent with the first detection result, the charging and discharging standard is determined not to be met, and if the detection results of multiple times are not consistent with the first detection result, the charging and discharging standard is determined to be met.
303. And if not, sending a third message prompt to the user handheld terminal.
Specifically, if the battery pack is determined not to meet the charging and discharging standard, the mobile phone terminal of the user is reminded, and the battery in the battery pack does not meet the charging or discharging standard and needs to be replaced.
When the batteries test whether a single battery and a plurality of batteries meet the charge-discharge standard within a preset time, if the batteries do not meet the charge-discharge standard after detection once, the batteries which do not meet the charge-discharge standard are detected again, so that the condition that the data result is not accurate due to one-time detection is avoided; if the same result is obtained through multiple measurements, a third message prompt is carried out on the user to prompt the user of the problem of the battery in the battery pack, so that the user can replace the battery in time to ensure the detection accuracy, and after the problem battery is found, the user is prompted to replace the battery, thereby protecting other batteries in the battery pack and prolonging the service time of the battery pack.
In a preferred embodiment of the present invention, the step 104 of obtaining the state of charge of the battery after the battery pack is used for a preset time, and performing battery modeling calculation to obtain the state of charge data includes:
401. after the battery is used for a preset time, acquiring the service end voltage, the service charge and discharge current and the service temperature of the battery;
402. and calculating to obtain the optimal state of charge of the battery meeting the conditions according to the using terminal voltage, the charging and discharging current and the using temperature.
Specifically, according to the using terminal voltage, the charging and discharging current and the using temperature, the charge state of the monomer is obtained through a robust estimation algorithm;
and correcting by using an ampere-hour integration method according to the charge state of the monomer to obtain the optimal charge state of the monomer.
In a preferred embodiment of the present invention, the step 105 determines whether the battery is in a balanced state according to a preset reference condition and the state of charge data, and if not, performing the balanced discharge processing includes:
judging the working condition of the current battery pack, and judging whether the current battery is in a fault state;
the fault state comprises any one of the using terminal voltage of the single battery is larger than the overvoltage threshold, the using terminal voltage of the single battery is lower than the low-voltage threshold, and the using temperature of the single battery is higher than the battery temperature threshold;
if the current battery pack is not in a fault or after the fault is eliminated, judging whether a single battery is in a balanced state or not according to the optimal monomer charge state;
if the discharge state is not in the balanced state, the discharge processing is not carried out;
judging whether the equalizing discharge processing time is greater than the equalizing preset time or not;
and if the time of the equalization discharge processing is longer than the equalization preset time, the equalization discharge operation is quitted, and if the time of the equalization discharge processing is shorter than the equalization preset time, the operation is repeated.
The method comprises the steps of estimating the single charge state of the battery by utilizing a robust, correcting by utilizing an ampere-hour integration method to obtain the optimal single charge state, removing faults of the battery, and carrying out balanced discharge among the batteries if no faults are found, so that the residual capacity of each battery in the battery pack is kept consistent, the situations of overcharge and overdischarge are avoided, and the service time of the battery pack is prolonged better.
In a preferred embodiment provided by the present invention, the step 106 of obtaining the charging and discharging condition of the battery, and the performing the corresponding prompt according to the charging and discharging condition includes:
501. acquiring voltage parameter historical data of a plurality of batteries;
specifically, the voltage parameter historical data comprises voltage values during charging in unit time, and a preset voltage range is formed according to a plurality of voltage values;
502. judging whether the battery voltage has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
specifically, the current charging and discharging voltage value is obtained, if the current charging and discharging voltage value is not in accordance with the preset voltage range, a fourth message prompt is sent to the user handheld terminal, and the fourth message prompt is used for prompting the current battery voltage state of the user.
503. Acquiring historical data of capacitance parameters of a plurality of batteries;
specifically, the history data of the capacitance parameter includes a charge/discharge frequency of charge/discharge in a unit time.
504. Judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the user handheld terminal;
specifically, calculating the total charge and discharge amount within a preset charge and discharge time;
judging whether the total charging amount and the total discharging amount of the plurality of batteries are the same within the same preset time according to the total amount;
and if not, sending a fifth message prompt to the handheld terminal of the user, wherein the fifth message prompt is used for prompting the current battery capacity state of the user.
When the situation is found, a fifth message prompt is sent to a user to remind the user that the change of the battery in the charging and discharging process needs to be replaced in time; therefore, the battery pack is ensured not to influence the whole service time of the battery pack due to the problem of one battery.
Optionally, in the charging process, an abnormal power failure condition may occur in the main power supply, and the process may be:
whether the main power supply is powered off or not is acquired, if the main power supply is powered off, the battery carries out self-protection, and the self-protection process is as follows:
acquiring the power-on time of a total power supply, and after the power-on, not performing charging and discharging operations on a battery within a preset time;
and after the preset time, acquiring whether the continuous current passes through the battery within the preset time, and if so, recovering the charge and discharge operation of the battery.
In the process of charging and discharging the battery pack, the power failure condition of the main power supply occurs, after power supply is recovered, the battery pack is not directly charged and discharged, and after current is stabilized, the battery is charged and discharged, so that the damage of the battery in the battery pack caused by the operations of power failure, power recovery and the like is protected, and the service life of the battery pack is prolonged.
In a preferred embodiment of the present invention, after step 106, a safety protection management for charging and discharging may be further performed, and the process may be:
601. acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
602. when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
specifically, the current capacity of the battery is obtained, and the difference value between the maximum capacity of the battery and the current capacity is calculated;
acquiring the charging rate of the equipment in unit time;
calculating the time required to be charged according to the difference value of the capacitance and the charging rate, wherein the charging time is preset charging time;
and if the charging time of the battery is equal to the preset charging time, the battery does not perform the charging operation.
When the battery pack is charged, the charging total capacity in the same time is ensured to be the same, the situation that some batteries are fully charged and some batteries are not fully charged is avoided, and the phenomenon of over-charging of the battery pack is further ensured to be avoided.
603. And when the battery discharges, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
Specifically, calculating the ratio of the residual electric capacity to the maximum electric capacity;
if the ratio is lower than 30 percent and higher than 20 percent, sending a battery charging requirement reminding to the handheld terminal of the user;
if the ratio is lower than 20 percent and higher than 10 percent, the battery low-power mode is started, the low-power mode only closes the preset high-power equipment, and sends a message prompt that the battery is in low power and needs to be charged as soon as possible to the handheld terminal of the user;
if the ratio is lower than 10 percent and higher than 0 percent, the power saving mode is started, the power saving mode only starts preset necessary starting equipment, and sends a message reminding that the battery is in the power saving mode to the user handheld terminal for charging.
When the battery discharges, when the battery pack discharges to reach a certain ratio range, different message reminders are performed on the user; when the electric quantity is lower than a certain ratio range, corresponding operation is carried out, the over-discharge condition of the battery pack is avoided, the over-discharge of the battery causes certain damage to the battery, the over-discharge is avoided, the service time of the battery pack is prolonged, and the damage is reduced.
In a preferred embodiment of the present invention, after step 106, the battery replacement management may be further performed, and the process may be:
701. obtaining a plurality of current battery state parameters;
specifically, the battery state parameter includes the current residual capacities of the plurality of batteries.
702. Evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
specifically, if the residual capacities of the plurality of batteries are inconsistent, the maximum residual capacity and the minimum residual capacity are obtained, and the capacity difference between the maximum residual capacity and the minimum residual capacity is calculated.
After the group battery was used for a long time, the loss of different degree takes place for battery itself, when the loss of different degree is carrying out charge-discharge operation simultaneously, the circumstances that probably will appear overcharging and overdischarging takes place, and then influences the use of group battery, takes place when such circumstances appears, sends out the news and reminds, makes the user change the battery, guarantees the live time of group battery.
703. And judging whether the battery needs to be replaced or not according to the use condition.
Specifically, if the capacitance difference value exceeds the preset capacitance difference value range, replacement reminding is carried out;
optionally, if the residual capacitance is lower than the preset capacitance, a replacement prompt is performed.
After the battery is used for a long time, the battery and the battery pack generate loss, when the loss is lower than a preset capacitance value, overcharge and overdischarge are easy to occur in the charging process, and in order to enable the equipment to run better, a user needs to be reminded, so that the normal running of the equipment is guaranteed.
Example two:
fig. 2 provides a battery management apparatus 2 according to an embodiment of the present invention, where the apparatus 2 includes:
a first obtaining module 21, configured to obtain initial state parameters of the multiple batteries;
a first detection module 22, configured to detect whether the battery meets a standard for forming a battery pack according to the initial state parameter;
the second detection module 23 is configured to obtain charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detect whether the charge and discharge conditions of the plurality of batteries within a preset time meet the charge and discharge standards according to the charge and discharge parameters;
the second acquisition module 24 is used for acquiring the charge state of the battery after the battery pack is used for a preset time, and performing battery modeling calculation to obtain charge state data;
the processing module 25 is configured to determine whether the battery is in a balanced state according to a preset reference condition and the state of charge data, and perform balanced discharge processing if the battery is not in the balanced state;
and the prompt module 26 is used for acquiring the charging and discharging conditions of the battery and carrying out corresponding prompt according to the charging and discharging conditions.
The present invention may further be configured in a preferred example, wherein the first detecting module is specifically configured to:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to the user handheld terminal;
judging whether the initial capacitances meet the standard of the battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
The present invention may be further configured in a preferred example, wherein the second detection module is specifically configured to:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
In a preferred example of the present invention, the second obtaining module is specifically configured to:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and calculating the charge state of the optimal battery meeting the conditions according to the using terminal voltage and the using temperature.
In a preferred example of the present invention, the prompting module is specifically configured to:
acquiring voltage parameter historical data of a plurality of batteries;
judging whether the battery voltage has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the user handheld terminal;
the present invention in a preferred example may be further configured such that the module further comprises:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery discharges, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
The present invention in a preferred example may be further configured such that the module further comprises:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the use condition.
Example three:
fig. 3 is a battery management system according to an embodiment of the present invention, where the system includes:
first acquiring means 31 for acquiring initial state parameters of the plurality of batteries;
first detecting means 32 for detecting whether the battery meets a standard for constituting the battery pack, based on the initial state parameter;
a second detecting device 33, configured to obtain charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detect whether the charge and discharge conditions of the plurality of batteries within a preset time meet the charge and discharge standards according to the charge and discharge parameters;
the second acquisition device 34 is used for acquiring the charge state of the battery after the battery pack is used for a preset time, and performing battery modeling calculation to obtain charge state data;
the processing device 35 is configured to determine whether the battery is in a balanced state according to a preset reference condition and the state of charge data, and perform balanced discharge processing if the battery is not in the balanced state;
and the prompting device 36 is used for acquiring the charging and discharging conditions of the battery and carrying out corresponding prompting according to the charging and discharging conditions.
The present invention may further be configured in a preferred example, wherein the first detecting device is specifically configured to:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to the user handheld terminal;
judging whether the initial capacitances meet the standard of the battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
The present invention may further be configured in a preferred example, wherein the second detecting device is specifically configured to:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
The present invention may further be configured in a preferred example, that the second obtaining means is specifically configured to:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and calculating the charge state of the optimal battery meeting the conditions according to the using terminal voltage and the using temperature.
In a preferred example, the present invention may be further configured such that the prompting device is specifically configured to:
acquiring voltage parameter historical data of a plurality of batteries;
judging whether the battery voltage has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the user handheld terminal;
the present invention in a preferred example may be further configured such that the apparatus further comprises:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery discharges, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
The present invention in a preferred example may be further configured such that the apparatus further comprises:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the use condition.
Example four:
an embodiment of the present invention provides a battery management apparatus, which includes a memory and a processor, where the memory stores a computer program that can be loaded by the processor and executes any one of the steps of the above method embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

Claims (10)

1. A battery management method, applied to a battery management system, the system comprising: a plurality of the batteries constitute a battery pack;
acquiring initial state parameters of a plurality of batteries;
detecting whether the battery meets the standard of forming a battery pack or not according to the initial state parameters;
if yes, acquiring charge and discharge parameters of the plurality of batteries during charge and discharge, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet charge and discharge standards or not according to the charge and discharge parameters;
after the battery pack is used for a preset time, acquiring the charge states of a plurality of batteries, and performing battery modeling calculation to obtain charge state data;
judging whether the battery is in a balanced state or not according to a preset reference condition and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and acquiring the charging and discharging condition of the battery, and carrying out corresponding prompt according to the charging and discharging condition.
2. The method of claim 1, wherein the initial state parameters are initial terminal voltages of the plurality of cells, initial capacities of the plurality of cells, and wherein detecting whether the cells meet criteria for forming the battery pack based on the initial state parameters comprises:
judging whether the initial terminal voltages meet the battery pack standard or not according to the initial terminal voltages, if not, adjusting the total voltage and sending a first message prompt to a user handheld terminal;
judging whether the initial capacitances meet the standard of a battery pack or not according to the initial capacitances, and if not, analyzing the initial capacitances of the batteries;
and sending a second message prompt to the user handheld terminal and acquiring message feedback according to the analysis result.
3. The method of claim 1, wherein the charging and discharging parameters are charging and discharging terminal voltages and battery temperatures of the plurality of batteries, and the detecting whether the plurality of batteries meet the charging and discharging criteria within the predetermined time period according to the charging and discharging parameters comprises:
judging whether the charging and discharging standard is met or not according to the charging and discharging terminal voltage and the battery temperature;
if not, further detecting whether the battery meets the charge-discharge standard within a preset time;
and if not, sending a third message prompt to the user handheld terminal.
4. The method of claim 1, wherein obtaining states of charge for a plurality of batteries, and performing battery modeling calculations to obtain state of charge data comprises:
after the battery is used for a preset time, acquiring the use terminal voltage and the use temperature of the battery;
and obtaining the charge state of the optimal battery meeting the conditions through calculation according to the using terminal voltage and the using temperature.
5. The method according to claim 1, wherein the step of obtaining the charging and discharging condition of the battery and the step of performing corresponding prompt according to the charging and discharging condition comprises the steps of:
acquiring terminal voltage parameter historical data of a plurality of batteries;
judging whether the voltage of the battery terminal has a problem or not according to the historical data, and if so, sending a fourth message prompt to the user handheld terminal;
acquiring historical data of capacitance parameters of a plurality of batteries;
and judging whether the battery capacity has a problem or not according to the historical data, and if so, sending a fifth message prompt to the handheld terminal of the user.
6. The method of claim 1, further comprising:
acquiring the maximum electric capacities of a plurality of batteries after the batteries are used for a preset time;
when the battery is charged, controlling the battery to perform charging operation according to the maximum electric capacity;
and when the battery is discharged, acquiring the residual capacity, and sending a sixth message prompt to the handheld terminal of the user according to the residual capacity.
7. The method of claim 1, further comprising:
obtaining a plurality of current battery state parameters;
evaluating the current service condition of the battery according to the initial state parameters and the current battery state parameters;
and judging whether the battery needs to be replaced or not according to the service condition.
8. A battery management apparatus, the apparatus comprising:
the first acquisition module is used for acquiring initial state parameters of the plurality of batteries;
the first detection module is used for detecting whether the battery meets the standard of forming the battery pack or not according to the initial state parameter;
the second detection module is used for acquiring charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet the charge and discharge standards or not according to the charge and discharge parameters;
the second acquisition module is used for acquiring the charge state of the battery after the battery pack is used for a preset time, and performing battery modeling calculation to obtain charge state data;
the processing module is used for judging whether the battery is in a balanced state or not according to a preset reference condition and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and the prompt module is used for acquiring the charging and discharging conditions of the battery and carrying out corresponding prompt according to the charging and discharging conditions.
9. A battery management system, the system comprising:
the first acquisition device is used for acquiring initial state parameters of the batteries;
the first detection device is used for detecting whether the battery meets the standard of forming the battery pack or not according to the initial state parameter;
the second detection device is used for acquiring charge and discharge parameters of the plurality of batteries during charge and discharge if the battery pack meets the standards for forming the battery pack, and detecting whether the charge and discharge conditions of the plurality of batteries in a preset time meet the charge and discharge standards or not according to the charge and discharge parameters;
the second acquisition device is used for acquiring the charge states of the batteries after the battery pack is used for preset time, and performing battery modeling calculation to obtain charge state data;
the processing device is used for judging whether the battery is in a balanced state or not according to a preset reference condition and the charge state data, and performing balanced discharge processing if the battery is not in the balanced state;
and the prompting device is used for acquiring the charging and discharging condition of the battery and carrying out corresponding prompting according to the charging and discharging condition.
10. A battery management apparatus, characterized in that: the device comprises a memory and a processor connected with the memory, wherein the memory is used for storing a group of program codes, and the processor calls the program codes stored in the memory to execute the method of any one of claims 1 to 7.
CN202011105521.5A 2020-10-15 2020-10-15 Battery management method, device and system Pending CN112467822A (en)

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Application publication date: 20210309