CN106772113A - A kind of method that degree of aging is judged based on accumulator voltage change - Google Patents
A kind of method that degree of aging is judged based on accumulator voltage change Download PDFInfo
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- CN106772113A CN106772113A CN201710198129.1A CN201710198129A CN106772113A CN 106772113 A CN106772113 A CN 106772113A CN 201710198129 A CN201710198129 A CN 201710198129A CN 106772113 A CN106772113 A CN 106772113A
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- voltage
- battery
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- 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
Abstract
The present invention relates to battery management technology, it discloses a kind of method for judging degree of aging based on accumulator voltage change, be conducive to carrying out cell degradation degree quick, accurate judgement.The method includes：The new battery for choosing certain model for needing measurement is circulated discharge and recharge, until reaching the degree of aging of regulation, during cycle charge-discharge, the situation of change of the terminal voltage of real time record battery, correspondence charging interval and the actual active volume of battery, draw the corresponding relation curve of charging voltage and time in cycle charge discharge electrical testing each time, selection degree of aging is a plurality of charging voltage of certain resolution and the corresponding relation curve of time as reference curve, observe the voltage change of reference curve, the maximum voltage section of voltage change is chosen to demarcate section, in the battery of actually used this kind of model, obtain and demarcating the stage charging voltage corresponding charging interval, degree of aging is obtained by contrasting the test charging interval for demarcating section corresponding with each reference curve in the charging interval.
Description
Technical field
It is more particularly to a kind of that degree of aging is judged based on accumulator voltage change the present invention relates to battery management technology
Method.
Background technology
With the development of social economy, pollution becomes increasingly severe, traditional production of energy and occupation mode by
Gradually quit the stage, new energy is gradually valued by people, while the attention of countries in the world government is also obtain, so accelerating new
The research of the energy becomes extremely urgent.
Battery takes on very important role in new energy, so the how more characteristic of electrolytic cell, such as
It is nowadays very popular research topic that what can carry out management well to the state-of-charge of battery and health status.
The content of the invention
The technical problems to be solved by the invention are：Propose that a kind of change based on accumulator voltage judges degree of aging
Method, is conducive to carrying out cell degradation degree quick, accurate judgement.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of method for judging degree of aging based on accumulator voltage change, comprises the following steps：
A. the new battery for choosing certain model for needing measurement is circulated discharge and recharge；
B. during cycle charge-discharge, the situation of change of the terminal voltage of real time record battery, correspondence charging interval and electricity
The actual active volume in pond；
C. after the degree of aging that the actual active volume of battery reaches regulation, cycle charge discharge electrical testing is stopped；
D. the corresponding relation curve of charging voltage and time in cycle charge discharge electrical testing each time is drawn；
E. selection degree of aging is a plurality of charging voltage of certain resolution and the corresponding relation curve of time as reference
Curve, observes the voltage change of reference curve, chooses the maximum voltage section of voltage change to demarcate section；
F. in the battery of actually used this kind of model, obtain and demarcating the stage charging voltage corresponding charging interval, pass through
The test charging interval for demarcating section corresponding with each reference curve in the charging interval is contrasted, wherein the immediate test charging interval
The corresponding degree of aging of curve at place is the degree of aging of the current size battery.
As further optimization, in step a, when charge-discharge test is circulated to battery, charge parameter to ensure with
Actually used work condition environment is consistent, and the charge parameter includes charging voltage and charging current；During electric discharge, it is ensured that electric discharge is electric every time
Stream is consistent.
Used as further optimization, in step e, the certain resolution is 5%, in step e, selected reference curve
Be respectively 0 including degree of aging, 5%, 10% ... 95%, 100% 21 curves.
It is described to obtain in the method for demarcating the stage charging voltage corresponding charging interval in step f as further optimization
For：The battery of real time record model charging voltage in use and correspondence time, so as to obtain demarcation section charge electricity
Press the corresponding charging interval.
The beneficial effects of the invention are as follows：
Estimation to the degree of aging of battery can be realized by the simple record to nominal voltage section, it is not necessary to complicated
Algorithm and substantial amounts of calculating, it is only necessary to early stage to need test model new battery regulation charge and discharge electrical environment under it is entered
Row discharge and recharge burn-in test, records data therein and arranges；The judgement in later stage only needs to be used as by the time of voltage section
Basis for estimation.
Brief description of the drawings
Fig. 1 differentiates flow chart for the degree of aging of the embodiment of the present invention.
Specific embodiment
The present invention is directed to propose a kind of method for judging degree of aging based on accumulator voltage change, is conducive to battery
Degree of aging carries out quick, accurate judgement.
Below in conjunction with the accompanying drawings and embodiment is further described to the solution of the present invention：
As shown in figure 1, in the present invention, choose needs the battery size of measurement first, in real working condition of trying one's best
In the case of be circulated charge and discharge process to battery, data such as voltage of period continual measurement battery, and record battery
Actual active volume；
(general electrokinetic cell reaches rated capacity after the active volume of battery reaches the complete aging capacity of regulation
80%, it is believed that it is completely aging, and uninterrupted power source battery reaches the 60% of rated capacity, it is considered as it completely aging), it is right to stop
The discharge and recharge of battery, obtaining step is completed.
Then the data gathered in whole charge and discharge process are arranged, obtains each charging voltage of battery and time
Relation curve, choose 21 curves that degree of aging is 5% resolution ratio for reference curve, then observe battery reference curve
Voltage change, chooses the maximum voltage section of voltage change to demarcate section, and process step is completed.
The battery it is actually used during, measured by the voltage to battery charging process and time, just
The degree of aging of battery can be differentiated by the difference in charging interval：
Obtain demarcating stage charging voltage corresponding charging interval, by contrasting the charging interval and each reference curve in
Correspondence demarcates the test charging interval of section, wherein the corresponding degree of aging of curve where the immediate test charging interval is
The degree of aging of the current size battery.
By taking Changhong money battery as an example, the identification of degree of aging is carried out to it：
Determine that battery is new battery first, at 25 DEG C, 1A carries out discharge and recharge burn-in test to it under conditions of charging, and charges
Electric current must be 1A, and discharge current is appropriate, and the voltage of real time record battery in whole process, discharge and recharge time, battery holds
The parameters such as amount, completely aging rear stopping test being reached in battery.For the charging of cycle charge-discharge testing and drawing battery each time
The curve of voltage and time, then chooses 21 curves that degree of aging is 5% as reference curve, and observe the change of voltage
Trend, it is nominal voltage section to choose the maximum voltage section of voltage change, and it is the demarcation section of voltage that 3.7v-3.9v is chosen in this example.
When battery is applied in practice, in the charging process of battery, the voltage change of real time record battery and time
Relation, be 3.7v- by cell voltage in the time and reference curve after time that battery changes from 3.7v-3.9v is obtained
3.9v demarcates section corresponding charging interval and compares, and the corresponding degree of aging of immediate with the time that curve is exactly electricity
The degree of aging in pond, such as：In actual use, the charging voltage of record is the battery from the 3.7v-3.9v corresponding charging intervals
10min, by the voltage section 3.7v-3.9v corresponding charging intervals in 21 reference curves of comparison, it is found that degree of aging is 95%
Curve in charging voltage from the 3.7v-3.9v corresponding charging intervals be 10min, then judge the current degree of aging of the battery as
95%.
Additionally, the current actual active volume of the battery can also be calculated based on the degree of aging：
If according to the rules, the size battery it is complete aging when actual active volume be the 80% of its rated capacity, then
In the case of being 95% in current degree of aging, the actual active volume of the battery is 80%*95% rated capacities.
Claims (4)
1. it is a kind of to change the method for judging degree of aging based on accumulator voltage, it is characterised in that to comprise the following steps：
A. the new battery for choosing certain model for needing measurement is circulated discharge and recharge；
B. during cycle charge-discharge, the situation of change of the terminal voltage of real time record battery, correspondence charging interval and battery reality
Border active volume；
C. after the degree of aging that the actual active volume of battery reaches regulation, cycle charge discharge electrical testing is stopped；
D. the corresponding relation curve of charging voltage and time in cycle charge discharge electrical testing each time is drawn；
E. corresponding relation curve of the degree of aging for a plurality of charging voltage and the time of certain resolution is chosen as reference curve,
The voltage change of reference curve is observed, the maximum voltage section of voltage change is chosen to demarcate section；
F. in the battery of actually used this kind of model, obtain and demarcating the stage charging voltage corresponding charging interval, by contrast
The test charging interval for demarcating section corresponding with each reference curve in the charging interval, wherein where the immediate test charging interval
The corresponding degree of aging of curve be the degree of aging of the current size battery.
It is 2. a kind of as claimed in claim 1 to change the method for judging degree of aging based on accumulator voltage, it is characterised in that
In step a, when charge-discharge test is circulated to battery, charge parameter will ensure consistent with actually used work condition environment, institute
Stating charge parameter includes charging voltage and charging current；During electric discharge, it is ensured that each discharge current is consistent.
It is 3. a kind of as claimed in claim 1 to change the method for judging degree of aging based on accumulator voltage, it is characterised in that
In step e, the certain resolution is 5%, in step e, selected reference curve is respectively 0 including degree of aging,
5%th, 10% ... 95%, 100% 21 curves.
It is 4. a kind of as claimed in claim 1 to change the method for judging degree of aging based on accumulator voltage, it is characterised in that
In step f, method of the acquisition in the demarcation stage charging voltage corresponding charging interval is：The battery of the real time record model exists
Charging voltage and correspondence time during use, so as to obtain the demarcation stage charging voltage corresponding charging interval.
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| CN201710198129.1A CN106772113A (en) | 2017-03-29 | 2017-03-29 | A kind of method that degree of aging is judged based on accumulator voltage change |
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| CN201710198129.1A CN106772113A (en) | 2017-03-29 | 2017-03-29 | A kind of method that degree of aging is judged based on accumulator voltage change |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976636A (en) * | 2017-11-17 | 2018-05-01 | 深圳市恒翼能科技有限公司 | Method and system based on the complete discharge and recharge data of battery compartment discharge and recharge data reconstruction |
| CN111239628A (en) * | 2020-02-20 | 2020-06-05 | 瑞浦能源有限公司 | Method and system for detecting attenuation degree of secondary storage battery and series module |
| US10734689B2 (en) | 2017-11-17 | 2020-08-04 | Shenzhen Hynn Technologies Co., Ltd. | Method and system for reconstructing complete charging-discharging data based on partial charging-discharging data of battery |
| CN113189500A (en) * | 2021-04-28 | 2021-07-30 | 深圳市杉川机器人有限公司 | Battery electric quantity calculation method and device, computer equipment and storage medium |
| CN116106749A (en) * | 2023-01-03 | 2023-05-12 | 广州汽车集团股份有限公司 | Battery aging detection method and device, electronic equipment and storage medium |
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| CN116106749A (en) * | 2023-01-03 | 2023-05-12 | 广州汽车集团股份有限公司 | Battery aging detection method and device, electronic equipment and storage medium |
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Application publication date: 20170531 |