CN103728565A - Method for detecting whether battery pack is qualified or not - Google Patents
Method for detecting whether battery pack is qualified or not Download PDFInfo
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- CN103728565A CN103728565A CN201310711986.9A CN201310711986A CN103728565A CN 103728565 A CN103728565 A CN 103728565A CN 201310711986 A CN201310711986 A CN 201310711986A CN 103728565 A CN103728565 A CN 103728565A
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- battery pack
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Abstract
The invention relates to a method for detecting whether a battery pack is qualified or not. The method includes the following steps that firstly, the battery pack is charged with 1C until the SOC reaches 100% and the battery pack stands still for one hour; secondly, the battery pack is vibrated with the frequency of 10HZ to 55HZ and the maximum acceleration of 30m/s, and at the same time, the battery pack is discharged with 1C; the voltage of all unit batteries in the battery pack is monitored throughout the discharging process, the highest unit battery voltage, the lowest unit battery voltage, the temperature of connection sheets among all the unit batteries in the battery pack and the temperature of the surfaces of the unit batteries are obtained and vibration lasts for 4-6 minutes; thirdly, the voltage difference between the highest unit battery voltage and the lowest unit battery voltage is judged, if the voltage difference is larger than the allowance voltage difference of the battery pack, the battery pack is determined to be disqualified, or any temperature value in the second step exceeds the allowance temperature, the battery pack is determined to be disqualified. The method for detecting whether the battery pack is qualified or not is applicable to most of battery packs used in automobiles at present and is fast and convenient in terms of detection and needless of being installed in the automobiles in order to carry out detection.
Description
Technical field
The invention belongs to power battery technology field, be specifically related to a kind of method whether electrokinetic cell is qualified of checking.
Background technology
For the battery being applied on electric automobile, owing to using in the environment jolting for a long time, so must test under shock conditions electric battery.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of electric battery of can effectively checking and whether has the abnormal whether qualified method of check electric battery.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize:
Check the method whether electric battery is qualified, the method step is as follows:
S1: with 1C, electric battery is charged to SOC 100%, standing 1 hour;
S2: take frequency as 10-55 HZ, peak acceleration be 30m/s2 vibrations electric battery, with 1C, electric battery is discharged simultaneously, each battery cell voltage in complete monitoring electric battery in discharge process, and obtain in high monomer voltage, minimum monomer voltage and electric battery the temperature of brace and the temperature on battery cell surface between each battery cell, vibrations time remaining 4～6 minutes;
S3: judge the pressure reduction between high monomer voltage and minimum monomer voltage, if this pressure reduction is greater than the pressure reduction that this electric battery allows, judge that this electric battery is defective; Or, if in S2 step wherein arbitrary temperature value exceed allowable temperature, judge that this electric battery is defective.
The whether qualified method of check electric battery of the present invention's design is suitable for checking the electric battery of existing major applications in vehicle, and this scheme inspection party is just quick, and tests without being installed in vehicle.
Embodiment
In order to allow those skilled in the art understand better technical scheme of the present invention, below in conjunction with embodiment, the present invention is further elaborated.
The whether qualified method of check electric battery that the present embodiment discloses is suitable for checking the electric battery of existing major applications in vehicle, and this scheme inspection party is just quick, and without being installed in vehicle.
Specifically, the method step is as follows:
S1: with 1C, electric battery is charged to SOC 100%, standing 1 hour;
S2: take frequency as 10-55 HZ, peak acceleration be 30m/s2 vibrations electric battery, with 1C, electric battery is discharged simultaneously, each battery cell voltage in complete monitoring electric battery in discharge process, and obtain in high monomer voltage, minimum monomer voltage and electric battery the temperature of brace and the temperature on battery cell surface between each battery cell, vibrations time remaining 4～6 minutes;
S3: judge the pressure reduction between high monomer voltage and minimum monomer voltage, if this pressure reduction is greater than the pressure reduction that this electric battery allows, judge that this electric battery is defective; Or, if in S2 step wherein arbitrary temperature value exceed allowable temperature, judge that this electric battery is defective.
In the present embodiment, this parameter of pressure reduction that described electric battery allows is relevant with the type of battery, is the parameter that battery manufacturer draws according to battery types, when battery applications, can directly use.
It is more than preferably implementation of the present invention; it should be noted that; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (1)
1. check the method whether electric battery is qualified, it is characterized in that, the method step is as follows:
S1: with 1C, electric battery is charged to SOC 100%, standing 1 hour;
S2: take frequency as 10-55 HZ, peak acceleration be 30m/s2 vibrations electric battery, with 1C, electric battery is discharged simultaneously, each battery cell voltage in complete monitoring electric battery in discharge process, and obtain in high monomer voltage, minimum monomer voltage and electric battery the temperature of brace and the temperature on battery cell surface between each battery cell, vibrations time remaining 4～6 minutes;
S3: judge the pressure reduction between high monomer voltage and minimum monomer voltage, if this pressure reduction is greater than the pressure reduction that this electric battery allows, judge that this electric battery is defective; Or, if in S2 step wherein arbitrary temperature value exceed allowable temperature, judge that this electric battery is defective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310711986.9A CN103728565A (en) | 2013-12-19 | 2013-12-19 | Method for detecting whether battery pack is qualified or not |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711986.9A CN103728565A (en) | 2013-12-19 | 2013-12-19 | Method for detecting whether battery pack is qualified or not |
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| CN103728565A true CN103728565A (en) | 2014-04-16 |
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| CN201310711986.9A Pending CN103728565A (en) | 2013-12-19 | 2013-12-19 | Method for detecting whether battery pack is qualified or not |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353685A (en) * | 2016-08-11 | 2017-01-25 | 华霆（合肥）动力技术有限公司 | Battery fault detection method and apparatus |
| CN107045103A (en) * | 2016-11-29 | 2017-08-15 | 北京长城华冠汽车科技股份有限公司 | Electric automobile power battery endurance testing device and method |
| CN109669143A (en) * | 2019-01-30 | 2019-04-23 | 中航锂电（洛阳）有限公司 | A kind of battery capacity evaluating method |
| CN110244226A (en) * | 2019-07-03 | 2019-09-17 | 安徽大学 | A power battery SOC estimation method |
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| CN107045103A (en) * | 2016-11-29 | 2017-08-15 | 北京长城华冠汽车科技股份有限公司 | Electric automobile power battery endurance testing device and method |
| CN109669143A (en) * | 2019-01-30 | 2019-04-23 | 中航锂电（洛阳）有限公司 | A kind of battery capacity evaluating method |
| CN109669143B (en) * | 2019-01-30 | 2021-01-29 | 中航锂电（洛阳）有限公司 | Battery pack capacity evaluation method |
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Application publication date: 20140416 |