CN102062671A - Method for detecting leakage of lithium ion battery - Google Patents
Method for detecting leakage of lithium ion battery Download PDFInfo
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- CN102062671A CN102062671A CN 201010555378 CN201010555378A CN102062671A CN 102062671 A CN102062671 A CN 102062671A CN 201010555378 CN201010555378 CN 201010555378 CN 201010555378 A CN201010555378 A CN 201010555378A CN 102062671 A CN102062671 A CN 102062671A
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Abstract
The invention discloses a method for detecting leakage of a lithium ion battery, comprising the following steps: a) placing a lithium ion battery to be detected into a space the top of which is provided with an air outlet; b) heating the lithium ion battery to be detected; c) collecting gas at the air outlet; d) detecting the content of organic compound component in the collected gas; and e) determining whether the leakage of the lithium ion battery is existed or not by comparing the content of the organic compound component with a threshold. In the invention, variation of the external environment caused by the leakage of the lithium ion battery is detected, and inspection on the sealing effect of the lithium ion battery is realized, thus avoiding loss of leakage and ballooning safety potential caused by poor sealing property of the battery to a customer.
Description
Technical field
The present invention relates to a kind of detection method of lithium ion battery sealing effectiveness, relate in particular to and a kind ofly estimate the detection method of lithium ion battery sealing effectiveness by detecting the inside battery gas that leaks.
Background technology
Advantages such as the polyalcohol flexible packing lithium ion battery has voltage height, specific energy height, recycles often, storage time is long, not only on portable electric appts, be used widely, and be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool as mobile phone, Digital Video and laptop computer.
Polyalcohol flexible packing lithium ion battery phase square shaped and circular lithium ion battery have better external form dirigibility, thus by more applications in the electronic equipment of various pursuits fashion attractive in appearance.The environment of inside lithium ion cell working environment and outside batteries must be isolated fully, guarantees the operate as normal of battery, technically realizes that by modes such as welding or colloid sealings the quality of sealing determines that directly can battery operate as normal.
If cell sealing goes wrong, the electrolytic solution of inside battery then, gas etc. leak, and the air in the environment, moisture etc. enter battery and participate in electrochemical reaction and causes battery failure.With the polymer Li-ion battery is example, the battery internal and external environment isolate to be by the bonding relatively realization of internal layer polypropylene glue of one deck plastic-aluminum packaging film, and this mode can be with isolation such as the air in the electrode material in the working environment of inside battery, electrolytic solution, gas and the external environment condition, moisture, dust.If the glue-line adhesive effect of plastic-aluminum packaging film is poor, cause internal and external environment to communicate, then can cause inside battery electrolytic solution to leak (leakage), air enters the air-blowing that battery causes battery, discharges and recharges the forfeiture of function.
Summary of the invention
The objective of the invention is a kind of battery leakage detection method, check cell sealing quality prevents that dead battery from causing potential safety hazard.
A kind of lithium ion battery leakage detection method comprises the steps:
A) place a top to have the space of gas outlet lithium ion battery to be measured;
B) heating lithium ion battery to be measured;
C) gas at collection position, described gas outlet;
D) detect organic compound component concentration in the collected gas;
E) whether according to the leakage of relatively determining lithium ion battery to be measured of organic compound component concentration and threshold value.
Heating lithium ion battery to 40 to be measured ℃ in the step b), and kept 30 minutes.
In order to implement the inventive method, the present invention also provides a kind of lithium ion battery apparatus for testing weeping, comprise the casing that holds lithium ion battery to be measured, the top of described casing has the gas outlet, the position, gas outlet is covered with inverted funnel, lays the detection head of organic compounds component detector at the opening part at funnel top.
Battery does not have the organic gas composition to spill under the normal condition, and the organic component content of battery surrounding environment gas keeps certain substantially; If battery generation leakage, it spills bath composition and will inevitably evaporate in the battery ambient air, thereby causes near the increase of the air organic component content of battery.
The present invention promotes to spill the volatilization of electrolyte organic components by the method for heating and increase circulation of air, helps the judgement of gas composition content; Adopt photoionization (photoionizationdetector) organic compound volatile content detector (volatile organic compound) to detect near the constituent of air organic content of battery, and according to environmental baseline setting detection alarm value, whether leakage is judged to battery.If leakage does not take place battery, tester shows numerical value less than the reference value of setting according to environmental baseline, if battery generation leakage is arranged, tester shows numerical value greater than reference value, and instrument is reported to the police.
Determine the number of batteries of one-time detection according to the size of battery volume, bulky battery one-time detection quantity is few, and the battery one-time detection quantity that volume is little is many;
The invention has the beneficial effects as follows: by leakage causes the detection of outside batteries environmental change to lithium ion battery, realized inspection, thereby avoided battery because the loss that the bad leakage bulging potential safety hazard that causes of sealing causes the client to the lithium ion battery sealing effectiveness.
The inventive method transform to be checked the investigation object of battery hermetization, judges whether leakage of battery by the aerial component concentration of electrolyte component that leaks, and principle is simple, and is easy to operate; The device project organization that adopts is simple, highly versatile, and accuracy of detection height, display precision 1.0PPb; Utilize the situation of photoionization detect instrument quantitative evaluation battery leakage, both can judge whether leakage of battery, also can assess the order of severity of battery leakage; Setting by instrument self just can realize judgement, and the signal output of warning is arranged, and can improve the validity of detection, significantly reduces the probability of erroneous judgement or test leakage, guarantees the reliability of detection.
Description of drawings
The device synoptic diagram that Fig. 1 adopts when detecting the lithium ion battery leakage for the present invention, battery to be detected among the figure is placed in the seal case.
Embodiment
Referring to accompanying drawing, a kind of lithium ion battery apparatus for testing weeping of the present invention, comprise the casing 4 that holds lithium ion battery to be measured, the top of casing 1 has the gas outlet, the position, gas outlet is covered with inverted funnel 3, lay the detection head 2 of organic compounds component detector 1 at the opening part at funnel 3 tops, detector 1 is fixed on casing 1 outer wall by support 5.
Under test environment, the detected environment organic component of consecutive intervals 1 minute record display instrument content, calculate mean value and standard deviation, the standard deviation that adds 6 times with this mean value is an environmental benchmark value, as 10 secondary data record mean value is 200PPb, standard deviation is 3, and then setting reference value is that 200+6 * 3=218 is a reference value;
Mesuring battary is placed on is heated to 40 ℃ of uniform temperatures in the seal box, and kept 30 minutes, promote the volatilization of electrolytic solution, the detection head of instrument is placed the outlet of funnel shaped gas gathering-device, observe the variation of displayed value, record when reaching maximal value, this moment, this numerical value was mesuring battary organic volatile components contents, if this is worth greater than reference value, then instrument is reported to the police automatically, illustrating has battery that leakage has taken place in the mesuring battary, cause organic component content increase in the closed box; If this value is less than reference value, then instrument can not reported to the police, and proves that the phenomenon of leakage does not take place mesuring battary.
Claims (2)
1. a lithium ion battery leakage detection method is characterized in that, comprises the steps:
A) place a top to have the space of gas outlet lithium ion battery to be measured;
B) heating lithium ion battery to be measured;
C) gas at collection position, described gas outlet;
D) detect organic compound component concentration in the collected gas;
E) whether according to the leakage of relatively determining lithium ion battery to be measured of organic compound component concentration and threshold value.
2. lithium ion battery leakage detection method as claimed in claim 1 is characterized in that, heating lithium ion battery to 40 to be measured ℃ in the step b), and kept 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010555378 CN102062671A (en) | 2010-11-23 | 2010-11-23 | Method for detecting leakage of lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010555378 CN102062671A (en) | 2010-11-23 | 2010-11-23 | Method for detecting leakage of lithium ion battery |
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| CN102062671A true CN102062671A (en) | 2011-05-18 |
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| CN 201010555378 Pending CN102062671A (en) | 2010-11-23 | 2010-11-23 | Method for detecting leakage of lithium ion battery |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914409A (en) * | 2012-08-14 | 2013-02-06 | 昆山兴能能源科技有限公司 | Method for testing air tightness quality of flexibly packaged lithium ion battery |
| CN103148990A (en) * | 2013-02-04 | 2013-06-12 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium ion battery gas tightness detecting method |
| CN104849403A (en) * | 2015-04-22 | 2015-08-19 | 宁德时代新能源科技有限公司 | Method for monitoring lithium ion battery expansion |
| CN105259298A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | Lithium ion battery combustion detection method |
| CN105372294A (en) * | 2015-10-21 | 2016-03-02 | 中国电力科学研究院 | Lithium ion battery exposure detection method |
| CN106733717A (en) * | 2016-12-27 | 2017-05-31 | 浙江超威创元实业有限公司 | A kind of method for detecting that soft package lithium battery is damaged |
| CN106841360A (en) * | 2017-01-19 | 2017-06-13 | 南通新宙邦电子材料有限公司 | Electrolyte identification method |
| CN110007244A (en) * | 2018-01-03 | 2019-07-12 | 深圳前海久禾科技发展有限公司 | A kind of telephone testing machine and test method |
| CN110595704A (en) * | 2019-08-05 | 2019-12-20 | 中国电力科学研究院有限公司 | Leakage detection method and system for energy storage battery |
| CN111537151A (en) * | 2020-05-12 | 2020-08-14 | 惠州市德赛自动化技术有限公司 | Semi-automatic VOC gas leakage detection equipment and VOC gas leakage detection method |
| IT202000017428A1 (en) * | 2020-07-17 | 2020-10-17 | Marposs Spa | CHECKING THE LEAKAGE OF A BATTERY CELL USING A PHOTOIONIZATION SENSOR |
| CN112665794A (en) * | 2020-12-21 | 2021-04-16 | 江苏万锂达智能科技有限公司 | Lithium ion battery leakage detection method |
| CN113932985A (en) * | 2021-10-14 | 2022-01-14 | 湖南兴旭能新能源科技有限公司 | Lithium ion battery leak detection method |
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| CN1841036A (en) * | 2005-03-29 | 2006-10-04 | 株式会社东芝 | Leakage detection device and leakage detection method |
| CN101047272A (en) * | 2006-03-31 | 2007-10-03 | 索尼德国有限责任公司 | Battery leakage detection system |
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| JPH10172618A (en) * | 1996-12-13 | 1998-06-26 | Keihin Rika Kogyo:Kk | Method for inspecting lithium ion |
| US6479294B1 (en) * | 2000-11-02 | 2002-11-12 | Quallion Llc | Method for determining container leakage |
| CN1725542A (en) * | 2004-07-19 | 2006-01-25 | 肇庆市风华锂电池有限公司 | Method for measuring gas production rate of battery formation and system therefor |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914409A (en) * | 2012-08-14 | 2013-02-06 | 昆山兴能能源科技有限公司 | Method for testing air tightness quality of flexibly packaged lithium ion battery |
| CN103148990A (en) * | 2013-02-04 | 2013-06-12 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium ion battery gas tightness detecting method |
| CN104849403A (en) * | 2015-04-22 | 2015-08-19 | 宁德时代新能源科技有限公司 | Method for monitoring lithium ion battery expansion |
| CN104849403B (en) * | 2015-04-22 | 2016-12-14 | 宁德时代新能源科技股份有限公司 | Method for monitoring expansion of lithium ion battery |
| CN105259298A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | Lithium ion battery combustion detection method |
| CN105372294A (en) * | 2015-10-21 | 2016-03-02 | 中国电力科学研究院 | Lithium ion battery exposure detection method |
| CN106733717B (en) * | 2016-12-27 | 2019-01-25 | 浙江超威创元实业有限公司 | A method of detection soft package lithium battery is damaged |
| CN106733717A (en) * | 2016-12-27 | 2017-05-31 | 浙江超威创元实业有限公司 | A kind of method for detecting that soft package lithium battery is damaged |
| CN106841360A (en) * | 2017-01-19 | 2017-06-13 | 南通新宙邦电子材料有限公司 | Electrolyte identification method |
| CN106841360B (en) * | 2017-01-19 | 2019-05-21 | 南通新宙邦电子材料有限公司 | Method for identifying electrolyte or water of lithium ion battery |
| CN110007244A (en) * | 2018-01-03 | 2019-07-12 | 深圳前海久禾科技发展有限公司 | A kind of telephone testing machine and test method |
| CN110595704A (en) * | 2019-08-05 | 2019-12-20 | 中国电力科学研究院有限公司 | Leakage detection method and system for energy storage battery |
| CN111537151A (en) * | 2020-05-12 | 2020-08-14 | 惠州市德赛自动化技术有限公司 | Semi-automatic VOC gas leakage detection equipment and VOC gas leakage detection method |
| IT202000017428A1 (en) * | 2020-07-17 | 2020-10-17 | Marposs Spa | CHECKING THE LEAKAGE OF A BATTERY CELL USING A PHOTOIONIZATION SENSOR |
| CN112665794A (en) * | 2020-12-21 | 2021-04-16 | 江苏万锂达智能科技有限公司 | Lithium ion battery leakage detection method |
| CN113932985A (en) * | 2021-10-14 | 2022-01-14 | 湖南兴旭能新能源科技有限公司 | Lithium ion battery leak detection method |
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Open date: 20110518 |