CN104297692A - Method for detecting service life of battery - Google Patents
Method for detecting service life of battery Download PDFInfo
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- CN104297692A CN104297692A CN201410531512.0A CN201410531512A CN104297692A CN 104297692 A CN104297692 A CN 104297692A CN 201410531512 A CN201410531512 A CN 201410531512A CN 104297692 A CN104297692 A CN 104297692A
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Abstract
The invention provides a method for detecting the service life of a battery. The method aims at solving the problems that an existing testing method wastes time and labor and consumes electric energy, and sequentially includes the following steps: (1) carrying out constant-current charging to the upper-limit voltage; (2) carrying out placement; (3) carrying out constant-current discharging to the lower-limit voltage; (4) carrying out placement; (5) repeating the cycle from the step (1) to the step (4) 20 times to 100 times; (6) carrying out constant-current charging to the upper-limit voltage; (7) carrying out constant-voltage charging to the stop current; (8) carrying out placement; (9) carrying out constant-current discharging to the lower-limit voltage; (10) carrying out placement; (11) repeating the cycle from the step (1) to the step (10) N times. By means of the method, the number of times for carrying out constant voltage charging on the battery to the stop current is decreased; that is, the constant volume of the battery is carried out one time after the cycle from the step (1) to the step (4) is carried out 20 times to 100 times, and therefore specific volume attenuation of the battery can be seen; the service life is completely detected; meanwhile, electric energy waste caused by constant voltage charging can be reduced, and the detection time is further saved.
Description
Technical field
The present invention relates to a kind of method detecting battery life.
Background technology
At present when detecting the life-span of battery, step is as follows: (1) constant-current charge is to upper voltage limit; (2) constant-voltage charge is to cut-off current; (3) shelve; (4) constant-current discharge is to lower voltage limit; (5) shelve; (6) the N number of circulation in (1) ~ (5) is repeated.This method of testing wastes time and energy, and consumes electric energy.
Summary of the invention
The invention provides a kind of method detecting battery life, being intended to solve existing method of testing wastes time and energy, and consumes the problem of electric energy.
In order to solve above technical matters, the present invention is achieved through the following technical solutions: a kind of method detecting battery life, comprises the following steps successively:
(1) by constant-current charging of battery to upper voltage limit;
(2) battery is shelved 5 ~ 10 minutes; Can battery polarization be eliminated, battery temperature is reduced;
(3) by battery constant-current discharge to lower voltage limit;
(4) battery is shelved 5 ~ 10 minutes; Can battery polarization be eliminated, battery temperature is reduced;
(5) by step (1) ~ (4) circulation 20 ~ 100 times; During more than 100 times, be not easy the decay finding out capacity; When being less than 20 times, energy-saving effect is poor, consuming time longer.
(6) by constant-current charging of battery to upper voltage limit;
(7) by battery constant-voltage charge to cut-off current;
(8) battery is shelved 5 ~ 10 minutes; Can battery polarization be eliminated, battery temperature is reduced;
(9) by battery constant-current discharge to lower voltage limit; Carry out constant volume;
(10) battery is shelved 5 ~ 10 minutes; Can battery polarization be eliminated, battery temperature is reduced;
(11) step (1) ~ (10) are repeated until life-span cut-off; Be completed.
Further, in step (2), the battery time of shelving is 8 minutes; The Best Times shelved, the time is short, eliminates battery polarization, and battery temperature is reduced.
Further, in step (4), the battery time of shelving is 8 minutes; The Best Times shelved, the time is short, eliminates battery polarization, and battery temperature is reduced.
Further, in step (8), the battery time of shelving is 8 minutes; The Best Times shelved, the time is short, eliminates battery polarization, and battery temperature is reduced.
Further, in step (10), the battery time of shelving is 8 minutes; The Best Times shelved, the time is short, eliminates battery polarization, and battery temperature is reduced.
Further, in step (5), by step (1) ~ (4) circulation 50 times; Circulate and can find out the decay of capacity for 50 times, and whole detection is consuming time also few, resultant effect is best.
Compared with prior art advantage of the present invention is: The present invention reduces battery constant-voltage charge to the number of times of cut-off current, again once fixed capacity is carried out to battery 20 ~ 100 times by step (1) ~ (4) circulation later, so also can find out the capacity attenuation that battery is concrete; While completing life tests, not only can reduce the waste of energy because constant-voltage charge causes, and also a saving detection time.
Embodiment
Embodiment one:
When battery is 18650 type ferric phosphate lithium cell, a kind of method detecting battery life, comprises following successively
Step:
(1) by battery with the constant current charge of 1C to upper voltage limit 3.65V;
(2) battery is shelved 8 minutes;
(3) battery is discharged to lower voltage limit 2.0V with the steady current of 1C;
(4) battery is shelved 8 minutes;
(5) by step (1) ~ (4) circulation 50 times;
(6) by the constant current charge of battery 1C to upper voltage limit 3.65V;
(7) by battery with the constant-potential charge of 3.65V to cut-off current 0.1C;
(8) battery is shelved 8 minutes;
(9) battery is discharged to lower voltage limit 2.0V with the steady current of 1C;
(10) battery is shelved 8 minutes;
(11) step (1) ~ (10) are repeated until life-span cut-off; Measure discharge capacity be 80% of initial discharge capacity be the life-span cut-off time.
Embodiment two:
When battery is 22650 type lithium manganate battery, a kind of method detecting battery life, comprises following step successively
Rapid:
(1) by battery with the constant current charge of 0.5C to upper voltage limit 4.2V;
(2) battery is shelved 8 minutes;
(3) battery is discharged to lower voltage limit 3.0V with the steady current of 0.5C;
(4) battery is shelved 8 minutes;
(5) by step (1) ~ (4) circulation 50 times;
(6) by the constant current charge of battery 0.5C to upper voltage limit 4.2V;
(7) by battery with the constant-potential charge of 4.2V to cut-off current 0.1C;
(8) battery is shelved 8 minutes;
(9) battery is discharged to lower voltage limit 3.0V with the steady current of 0.5C;
(10) battery is shelved 8 minutes;
(11) step (1) ~ (10) are repeated until life-span cut-off; Measure discharge capacity be 80% of initial discharge capacity be the life-span cut-off time.
Embodiment three:
When battery is 38120 type ternary battery, a kind of method detecting battery life, comprises the following steps successively:
(1) by battery with the constant current charge of 2C to upper voltage limit 4.2V;
(2) battery is shelved 8 minutes;
(3) battery is discharged to lower voltage limit 3.0V with the steady current of 5C;
(4) battery is shelved 8 minutes;
(5) by step (1) ~ (4) circulation 50 times;
(6) by the constant current charge of battery 2C to upper voltage limit 4.2V;
(7) by battery with the constant-potential charge of 4.2V to cut-off current 0.5C;
(8) battery is shelved 8 minutes;
(9) battery is discharged to lower voltage limit 3.0V with the steady current of 5C;
(10) battery is shelved 8 minutes;
(11) step (1) ~ (10) are repeated until life-span cut-off; Measure discharge capacity be 80% of initial discharge capacity be the life-span cut-off time.
Step (1) ~ (5) are often after 50 circulations, in step (9), adopt constant current constant voltage charge-discharge test instrument to carry out once fixed capacity to battery, decrease the number of times of constant volume, if step (1) ~ (10) are repeated N time, then the capacity attenuation that battery is concrete can be found out again by the capacity comparing N time.The present invention is also applicable to the battery of other model.
The present invention reduces to battery constant-voltage charge to the number of times of cut-off current, 50 times once fixed capacity is carried out to battery by step (1) ~ (4) circulation, the capacity attenuation that battery is concrete can be found out; Not only can reduce the waste of energy because constant-voltage charge causes, and also a saving detection time.
The foregoing is only specific embodiments of the invention, but technical characteristic of the present invention is not limited thereto, any those skilled in the art is in the field of the invention, and the change done or modification are all encompassed among the scope of the claims of the present invention.
Claims (6)
1. detect a method for battery life, it is characterized in that: comprise the following steps successively:
(1) by constant-current charging of battery to upper voltage limit;
(2) battery is shelved 5 ~ 10 minutes;
(3) by battery constant-current discharge to lower voltage limit;
(4) battery is shelved 5 ~ 10 minutes;
(5) by step (1) ~ (4) circulation 20 ~ 100 times;
(6) by constant-current charging of battery to upper voltage limit;
(7) by battery constant-voltage charge to cut-off current;
(8) battery is shelved 5 ~ 10 minutes;
(9) by battery constant-current discharge to lower voltage limit;
(10) battery is shelved 5 ~ 10 minutes;
(11) step (1) ~ (10) are repeated until life-span cut-off.
2. a kind of method detecting battery life according to claim 1, it is characterized in that: in step (2), the battery time of shelving is 8 minutes.
3. a kind of method detecting battery life according to claim 1, it is characterized in that: in step (4), the battery time of shelving is 8 minutes.
4. a kind of method detecting battery life according to claim 1, it is characterized in that: in step (8), the battery time of shelving is 8 minutes.
5. a kind of method detecting battery life according to claim 1, it is characterized in that: in step (10), the battery time of shelving is 8 minutes.
6. a kind of method detecting battery life according to claim 1, is characterized in that: in step (5), by step (1) ~ (4) circulation 50 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410531512.0A CN104297692A (en) | 2014-10-10 | 2014-10-10 | Method for detecting service life of battery |
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| CN201410531512.0A CN104297692A (en) | 2014-10-10 | 2014-10-10 | Method for detecting service life of battery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678319A (en) * | 2015-03-11 | 2015-06-03 | 浙江中科立德新材料有限公司 | Method for simulation cycle test of lithium battery |
| CN104965180A (en) * | 2015-07-10 | 2015-10-07 | 国网冀北电力有限公司电力科学研究院 | Power battery life detection method and device |
| CN106443483A (en) * | 2016-11-07 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Pulse cycle life test method of nickel-metal hydride battery for electric automobile |
| CN106597290A (en) * | 2015-12-24 | 2017-04-26 | 申勇兵 | Charging voltage test method for prolonging service life of lithium battery of emergency intelligent lamp |
| CN107703454A (en) * | 2017-08-24 | 2018-02-16 | 超威电源有限公司 | A kind of power lead acid battery fast charging and discharging method of testing |
| CN111811905A (en) * | 2020-07-24 | 2020-10-23 | 天津市捷威动力工业有限公司 | Electrochemical matching rapid evaluation method |
| CN112946505A (en) * | 2019-12-11 | 2021-06-11 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN112946502A (en) * | 2019-12-11 | 2021-06-11 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN113219360A (en) * | 2021-06-02 | 2021-08-06 | 江苏中兴派能电池有限公司 | Lithium battery cycle life testing method based on floating charge strategy |
-
2014
- 2014-10-10 CN CN201410531512.0A patent/CN104297692A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678319A (en) * | 2015-03-11 | 2015-06-03 | 浙江中科立德新材料有限公司 | Method for simulation cycle test of lithium battery |
| CN104965180B (en) * | 2015-07-10 | 2018-02-27 | 国网冀北电力有限公司电力科学研究院 | The detection method and device in electrokinetic cell life-span |
| CN104965180A (en) * | 2015-07-10 | 2015-10-07 | 国网冀北电力有限公司电力科学研究院 | Power battery life detection method and device |
| CN106597290A (en) * | 2015-12-24 | 2017-04-26 | 申勇兵 | Charging voltage test method for prolonging service life of lithium battery of emergency intelligent lamp |
| CN106443483B (en) * | 2016-11-07 | 2019-07-16 | 成都雅骏新能源汽车科技股份有限公司 | A kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle |
| CN106443483A (en) * | 2016-11-07 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Pulse cycle life test method of nickel-metal hydride battery for electric automobile |
| CN107703454A (en) * | 2017-08-24 | 2018-02-16 | 超威电源有限公司 | A kind of power lead acid battery fast charging and discharging method of testing |
| CN112946505A (en) * | 2019-12-11 | 2021-06-11 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN112946502A (en) * | 2019-12-11 | 2021-06-11 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN112946502B (en) * | 2019-12-11 | 2023-03-14 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN112946505B (en) * | 2019-12-11 | 2023-03-14 | 珠海冠宇电池股份有限公司 | Method for rapidly testing cycle life of lithium ion battery |
| CN111811905A (en) * | 2020-07-24 | 2020-10-23 | 天津市捷威动力工业有限公司 | Electrochemical matching rapid evaluation method |
| CN113219360A (en) * | 2021-06-02 | 2021-08-06 | 江苏中兴派能电池有限公司 | Lithium battery cycle life testing method based on floating charge strategy |
| CN113219360B (en) * | 2021-06-02 | 2023-09-22 | 江苏中兴派能电池有限公司 | Lithium battery cycle life testing method based on float strategy |
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Application publication date: 20150121 |