CN101949971B - Method for selecting low-voltage storage battery - Google Patents
Method for selecting low-voltage storage battery Download PDFInfo
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- CN101949971B CN101949971B CN2010102770224A CN201010277022A CN101949971B CN 101949971 B CN101949971 B CN 101949971B CN 2010102770224 A CN2010102770224 A CN 2010102770224A CN 201010277022 A CN201010277022 A CN 201010277022A CN 101949971 B CN101949971 B CN 101949971B
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Abstract
The invention provides a method for selecting a low-voltage storage battery, comprising the following steps: continuously discharging the batteries to be selected to a set value; continuously discharging at the constant voltage of the set voltage to the set time or the battery current being lower than the set value, stopping discharging; keeping the discharged batteries for 1-30 days at 25-60 DEG. C and monitoring the open circuit voltage of the batteries, the batteries with the voltage being lower than the average voltage of the normal battery for 0.01V-0.5V are the low-voltage batteries. The method is fast and has high efficiency and no damage to the battery; the badness battery can be prevented and the product quality can be improved; the product complaint and repairing rate can be reduced.
Description
Technical field
The present invention relates to select the method for defective batteries, particularly a kind of method of selecting the low-voltage accumulator.
Background technology
Accumulator is in manufacture process, because foreign matter, pole plate burr, barrier film perforation and inner leakage reasons such as (Contiuum type accumulators) all possibly cause accumulator the phenomenon of low-voltage to occur.For picking out these defective productss, the method for using at present has two kinds.A kind of is behind the intact capacity of battery detecting, fills certain capacity to battery, then battery is shelved after a period of time test capacity once more, how much judges certified products and unacceptable product according to capacitance loss.Another kind method is behind the intact capacity of battery detecting, and battery discharge to cut-off voltage, is shelved the open-circuit voltage that a period of time measures battery more then, judges certified products and unacceptable product according to the height of open-circuit voltage.Yet if the low-voltage phenomenon is not serious, the capacitance loss of battery is with not obvious, so use first method to judge out.Even use second method; Battery discharge is arrived cut-off voltage; Inside battery is still possessed a part of capacity, and this can make the open-circuit voltage of battery in considerable time, not be significantly reduced, so will cause selecting chronic or can't defective products be picked out at all.Therefore, be necessary to study a kind of method of selecting the low-voltage accumulator fast and effectively, defective products sent in client's hand avoiding.
Summary of the invention
The present invention aims to provide a kind of quick, efficient, harmless to battery, method of selecting low-voltage battery of improving product percent of pass.
Embodiment of the present invention are following:
Battery continuous discharge to be selected to the voltage that will pass through after the capacity check reaches setting value; Again after constant voltage continuous discharge to setting-up time or battery current are lower than setting value under this setting voltage; Stop discharge, said setting-up time is 1～72 hour, and said setting current value is 1mA～10A; Then the battery after the above-mentioned discharge is shelved 1～30 day under 25 ℃～60 ℃ temperature, and the open-circuit voltage of monitoring battery, the battery that voltage is lower than normal battery average voltage 0.01V～0.5V is a low-voltage battery.
Be the efficient that raising is selected, the preferred 10mA～5A of said setting current value.
When the single nickel of battery to be selected was accumulator, setting voltage value was 0.3～1.2V.
When battery to be selected is the nickel of a plurality of same capabilities when being accumulator, a plurality of batteries series connection, setting voltage value is to be that 0.3～1.2V is a benchmark with single battery voltage, magnitude of voltage adds up.
When the single lithium ion battery of battery to be selected, setting voltage value is 2.5～3.5V.
When battery to be selected is the lithium ion battery of a plurality of same capabilities, a plurality of batteries series connection, setting voltage value is that the voltage with monocell is that 2.5～3.5V is a benchmark, magnitude of voltage adds up.
The present invention compared with prior art; Have the following advantages and beneficial effect: the present invention is under the prerequisite of not damaging accumulator property; Realized picking out fast the purpose of low-voltage accumulator; And can classic method can not also be picked out by select slight defective products, avoid the defective products battery is delivered in client's hand, promote product quality, reduced product complaint and maintenance rate.
Embodiment
Embodiment 1
Battery to be selected is 6 Ni-MH batteries that the 1C discharge capacity is 10Ah, and with its series connection, continuous discharge is to setting voltage value 6V; The setting voltage value that is each Ni-MH battery is 1V; Behind constant voltage discharge to 64 under this setting voltage 6V condition hour, stop discharge again, under 25 ℃, shelved 10 days then, the open-circuit voltage of monitoring accumulator; If there is voltage to be lower than the battery of normal battery average voltage 0.2V, then this accumulator is a low-voltage battery.
Embodiment 2
Basic identical with embodiment 1 step, stop discharge when just constant voltage discharge to discharge current is less than 10mA.
Embodiment 3
Battery to be selected is the single nickel separation cell of 50Ah for the 1C discharge capacity; Continuous discharge is to setting value 0.8V; Behind constant voltage discharge to 6 under this setting voltage value condition hour, stop discharge again, under 60 ℃, shelved 3 days then, the open-circuit voltage of monitoring accumulator; If there is the voltage of battery to be lower than normal battery average voltage 0.05V, then this accumulator is a low-voltage battery.
Embodiment 4
Basic identical with embodiment 3 steps, stop discharge when just constant voltage discharge to discharge current is less than 500mA.
Embodiment 5
Battery to be selected is the single lithium ion battery of 100Ah for the 1C discharge capacity; Continuous discharge is to setting value 3.2V; Behind constant voltage discharge to 1 under this setting voltage value condition hour, stop discharge again, under 25 ℃, shelved 21 days then, the open-circuit voltage of monitoring accumulator; If there is the voltage of battery to be lower than normal battery average voltage 0.3V, then this accumulator is a low-voltage battery.
Embodiment 6
Basic identical with embodiment 5 steps, stop discharge when just constant voltage discharge to discharge current is less than 5A.
Embodiment 7
Battery to be selected is 3 lithium ion batteries that the 1C discharge capacity is 40Ah, and with its series connection, continuous discharge is to setting voltage value 9V; The setting voltage value that is each lithium ion battery is 3V; Behind constant voltage discharge to 1 under this setting voltage 9V condition hour, stop discharge again, under 45 ℃, shelved 3 days then, the open-circuit voltage of monitoring accumulator; If there is voltage to be lower than the battery of normal battery average voltage 0.2V, then this accumulator is a low-voltage battery.
Embodiment 8
Basic identical with embodiment 7 steps, stop discharge when just constant voltage discharge to discharge current is less than 4A.
Claims (6)
1. method of selecting the low-voltage accumulator; It is characterized in that: battery continuous discharge to be selected to the voltage that will pass through after the capacity check reaches setting value; Again after constant voltage continuous discharge to setting-up time or battery current are lower than setting value under this setting voltage; Stop discharge, said setting-up time span is 1～72 hour, and said setting current value span is 1mA～10A; Then the battery after the above-mentioned discharge is shelved specified number of days under a certain specified temp; Specific range of temperatures is 25 ℃～60 ℃; Specified number of days is 1～30 day; And the open-circuit voltage of monitoring battery, the battery that the average electrical of voltage ratio normal battery is forced down a certain specific voltage is a low-voltage battery, this specific voltage span is 0.01V～0.5V.
2. the method for selecting the low-voltage accumulator as claimed in claim 1 is characterized in that: said setting current value span is 10mA～5A.
3. according to claim 1 or claim 2 the method for selecting the low-voltage accumulator, it is characterized in that: said battery to be selected is that single nickel is accumulator, and the setting voltage value span is 0.3～1.2V.
4. according to claim 1 or claim 2 the method for selecting the low-voltage accumulator; It is characterized in that: the nickel that said battery to be selected is a plurality of same capabilities is accumulator; A plurality of battery series connection; Setting voltage value is with the single battery voltage reference, the number of the looking battery to be selected magnitude of voltage that adds up, and the span of single battery voltage is 0.3～1.2V.
5. according to claim 1 or claim 2 the method for selecting the low-voltage accumulator, it is characterized in that: said battery to be selected is single lithium ion battery, the setting voltage value span is 2.5～3.5V.
6. according to claim 1 or claim 2 the method for selecting the low-voltage accumulator; It is characterized in that: said battery to be selected is the lithium ion battery of a plurality of same capabilities; A plurality of battery series connection; Setting voltage value is with the single battery voltage benchmark, the number of the looking battery to be selected magnitude of voltage that adds up, and the single battery voltage span is 2.5～3.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102770224A CN101949971B (en) | 2010-09-09 | 2010-09-09 | Method for selecting low-voltage storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102770224A CN101949971B (en) | 2010-09-09 | 2010-09-09 | Method for selecting low-voltage storage battery |
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| Publication Number | Publication Date |
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| CN101949971A CN101949971A (en) | 2011-01-19 |
| CN101949971B true CN101949971B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102770224A Active CN101949971B (en) | 2010-09-09 | 2010-09-09 | Method for selecting low-voltage storage battery |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033115A (en) * | 2015-03-20 | 2016-10-19 | 神讯电脑(昆山)有限公司 | Battery screening method |
| CN106772096A (en) * | 2017-01-20 | 2017-05-31 | 国轩新能源（苏州）有限公司 | The screening technique of low-voltage lithium battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151020A (en) * | 1995-11-22 | 1997-06-04 | 北京有色金属研究总院 | Method for separating secondary cell |
| CN2700892Y (en) * | 2003-05-10 | 2005-05-18 | 比亚迪股份有限公司 | Battery detection sorting instrument |
| CN1876256A (en) * | 2005-06-06 | 2006-12-13 | 深圳市比克电池有限公司 | Battery screening system and method |
-
2010
- 2010-09-09 CN CN2010102770224A patent/CN101949971B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151020A (en) * | 1995-11-22 | 1997-06-04 | 北京有色金属研究总院 | Method for separating secondary cell |
| CN2700892Y (en) * | 2003-05-10 | 2005-05-18 | 比亚迪股份有限公司 | Battery detection sorting instrument |
| CN1876256A (en) * | 2005-06-06 | 2006-12-13 | 深圳市比克电池有限公司 | Battery screening system and method |
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| CN101949971A (en) | 2011-01-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method of selecting low voltage battery Effective date of registration: 20221028 Granted publication date: 20120530 Pledgee: Hunan Xiangjiang Zhongying Investment Management Co.,Ltd. Pledgor: HUNAN COPOWER EV BATTERY Co.,Ltd. Registration number: Y2022980020196 |
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