CN106290355B - Lithium ion battery aluminum plastic film damage testing method - Google Patents
Lithium ion battery aluminum plastic film damage testing method Download PDFInfo
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- CN106290355B CN106290355B CN201610852593.3A CN201610852593A CN106290355B CN 106290355 B CN106290355 B CN 106290355B CN 201610852593 A CN201610852593 A CN 201610852593A CN 106290355 B CN106290355 B CN 106290355B
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- China
- Prior art keywords
- plastic film
- aluminum plastic
- aluminum
- weight percent
- detection liquid
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 83
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 239000002985 plastic film Substances 0.000 title claims abstract description 66
- 229920006255 plastic film Polymers 0.000 title claims abstract description 66
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- 238000012360 testing method Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 12
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims abstract description 11
- 235000019441 ethanol Nutrition 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 description 26
- 239000004411 aluminium Substances 0.000 description 10
- 230000008901 benefit Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of lithium ion battery aluminum plastic film damage testing method, includes the following steps：1) detection liquid is prepared：Copper chloride, ethyl alcohol, n-butanol, neopelex, polyacrylamide and water are hybridly prepared into detection liquid；2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and is impregnated certain time, the variation of plastic-aluminum film surface is then observed, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If the surface of aluminum plastic film does not have any variation, judge aluminum plastic film without breakage.Present invention operation is flexibly simple, of low cost, and can quick and precisely detect whether aluminum plastic film is mechanically damaged, to ensure that the battery quality manufactured, improves the security performance of battery.
Description
Technical field
The present invention relates to aluminum plastic film damage testing fields, more particularly to a kind of lithium ion battery aluminum plastic film damage testing side
Method.
Background technology
Lithium ion battery has had more than 20 as a most widely used rechargeable battery, Zi research and development to application so far
Year history.As other batteries, lithium ion battery is also by anode, cathode, diaphragm, electrolyte, collector and outer packing
Shell forms.The chemical property of lithium ion battery active ingredient is all very active, is placed in air to be easy to catch fire and even explode,
Thus the packaging shell of lithium ion battery should have certain corrosion resistance and very excellent barrier property, currently used packaging
Mainly there are box hat, aluminum hull and high molecular aluminium plastic film.Battery is packed using aluminum-plastic composite membrane, have many advantages, such as it is light-weight,
The ratio energy of battery can significantly be promoted.And laminated aluminum film film has prodigious flexibility, can effectively reduce electricity
The internal pressure in pond is not in explosion danger.Aluminum plastic film is mainly formed by five layers, respectively PET/PA layers from the outside to the core, PU layers, aluminium
Layer, PP-a layers and CPP/PPA layers.
And existing aluminum plastic film product is after by rushing casing forming, CPP/PPA layers are easy mechanically damaged, keep aluminium layer sudden and violent
A series of problems, such as revealing in the electrolytic solution so as to cause battery short circuit, battery flatulence, but will generate Fire explosion when serious, be easy
Cause irremediable safety accident.Thus CPP/PPA layers of detection aluminum plastic film is with the presence or absence of damaged extremely important.However current row
It is difficult to determine whether once quality problems occurs in battery there is no corresponding analysis detection means in the aluminum plastic film manufacturing side in industry
For CPP/PPA layers of aluminum plastic film it is impaired caused by, while being also difficult to verify aluminum plastic film before battery is made and whether there is CPP/PPA
The impaired phenomenon of layer, it is difficult to ensure the battery quality manufactured.
Invention content
The present invention in view of the existing deficiencies of the prior art, provides a kind of lithium ion battery aluminum plastic film damage testing method, this
Detection method operation is flexibly simple, of low cost, and can quickly and effectively detect whether aluminum plastic film is mechanically damaged, to
It ensure that the battery quality manufactured, improve the security performance of battery.
To achieve the above object, the present invention is using following technical solution：
A kind of lithium ion battery aluminum plastic film damage testing method, includes the following steps：
1) detection liquid is prepared：The second for being 8-12% by copper chloride that weight percent is 0.5-1.5%, weight percent
Neopelex that n-butanol that alcohol, weight percent are 0.3-0.5%, weight percent are 0.4-0.9%, weight
The water that the polyacrylamide and weight percent that percentage is 1-3% are 84-88% is hybridly prepared into detection liquid；Detect liquid each group
The sum of weight percent divided is 100%；
2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and is impregnated certain time, so
The variation of plastic-aluminum film surface is observed afterwards, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If aluminium
The surface of plastic film does not have any variation, then judges aluminum plastic film without breakage.
As a preferred embodiment, it is 0.5- that aluminum plastic film to be tested in step 2), which is put into time for impregnating in detection liquid,
2min。
The operation principle of the present invention：Since the main component polypropylene of the CPP/PPA layers of aluminum plastic film belongs to nonpolar molecule,
Thus its surface energy is relatively small, it is difficult to wetted.And CPP/PPa to be examined whether to rupture, necessarily require the detection liquid used
The CPP/PPA layers of aluminum plastic film can be soaked, otherwise detect liquid and be difficult to touch the very small hole of exposed aluminium layer, especially defect
Hole is just more difficult to touch.By after adding the ingredients such as ethyl alcohol, neopelex in detecting liquid, detecting
The surface energy of liquid is decreased obviously, and can be soaked the CPP/PPA layers of aluminum plastic film very well, be greatly strengthened accuracy of detection.And it detects in liquid
Copper chloride be color developing agent, and chlorion can destroy the passivation layer of corrosion aluminum surface layer, and reaction side is replaced by copper chloride and aluminium
Formula 2Al+3CuCl2=3Cu ↓+2AlCl3It is found that once plastic-aluminum film surface has the copper of rufous to be precipitated, then aluminum plastic film is judged
CPP/PPA layers have breakage；If the surface of aluminum plastic film does not have any variation, judge CPP/PPA layers of aluminum plastic film without breakage.
Compared with prior art, the present invention haing the following advantages and advantage, specifically：1, this method passes through in detection liquid
In add the ingredients such as ethyl alcohol, neopelex after, the surface energy for detecting liquid is decreased obviously, and keeps detection liquid energy fine
The CPP/PPA layers of aluminum plastic film are soaked, once the CPP/PPA layers of aluminum plastic film are damaged, are detected in the copper chloride and aluminum plastic film in liquid
Displacement reaction can quickly occur for aluminium layer, so as to fast and accurately detect whether aluminum plastic film is mechanically damaged, to ensure
The battery quality manufactured, improves the security performance of battery；2, this method operation is flexibly simple, of low cost, and can be straight
It sees ground and judges whether aluminum plastic film is mechanically damaged, and user is facilitated to detect.
More clearly to illustrate structure feature, technological means and its specific purposes reached and function of the present invention, under
Face is next in conjunction with specific embodiments, and invention is further described in detail：
Specific implementation mode
Embodiment 1：A kind of lithium ion battery aluminum plastic film damage testing method, includes the following steps：
1) detection liquid is prepared：By copper chloride that weight percent is 0.5%, weight percent be 9% ethyl alcohol, weight
Neopelex that n-butanol that percentage is 0.3%, weight percent are 0.4%, weight percent are 1.8%
The water that polyacrylamide and weight percent are 88% is hybridly prepared into detection liquid；
2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and impregnates 2min, is then seen
The variation of plastic-aluminum film surface is examined, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If aluminum plastic film
Surface there is no any variation, then judge aluminum plastic film without breakage.
Embodiment 2：
1) detection liquid is prepared：By copper chloride that weight percent is 1%, weight percent be 10% ethyl alcohol, weight
Neopelex that n-butanol that percentage is 0.4%, weight percent are 0.6%, weight percent be 2% it is poly-
The water that acrylamide and weight percent are 86% is hybridly prepared into detection liquid；
2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and impregnates 1min, is then seen
The variation of plastic-aluminum film surface is examined, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If aluminum plastic film
Surface there is no any variation, then judge aluminum plastic film without breakage.
Embodiment 3：
1) detection liquid is prepared：The ethyl alcohol, again for being 11% by copper chloride that weight percent is 1.5%, weight percent
Measure percentage be 0.5% n-butanol, weight percent be 0.6% neopelex, weight percent 2.4%
Polyacrylamide and weight percent be 84% water be hybridly prepared into detection liquid；
2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and impregnates 0.5min, then
The variation of plastic-aluminum film surface is observed, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If plastic-aluminum
The surface of film does not have any variation, then judges aluminum plastic film without breakage.
The operation principle of the present invention：Since the main component polypropylene of the CPP/PPA layers of aluminum plastic film belongs to nonpolar molecule,
Thus its surface energy is relatively small, it is difficult to wetted.And CPP/PPa to be examined whether to rupture, necessarily require the detection liquid used
The CPP/PPA layers of aluminum plastic film can be soaked, otherwise detect liquid and be difficult to touch the very small hole of exposed aluminium layer, especially defect
Hole is just more difficult to touch.By after adding the ingredients such as ethyl alcohol, neopelex in detecting liquid, detecting
The surface energy of liquid is decreased obviously, and can be soaked the CPP/PPA layers of aluminum plastic film very well, be greatly strengthened accuracy of detection.And it detects in liquid
Copper chloride be color developing agent, by copper chloride and aluminium displacement reaction equation 2Al+3CuCl2=3Cu ↓+2AlCl3Once it is found that aluminium
Plastic film surface has the copper of rufous to be precipitated, then judges that CPP/PPA layers of aluminum plastic film has breakage；If the surface of aluminum plastic film does not have any change
Change, then judges CPP/PPA layers of aluminum plastic film without breakage.
The above described is only a preferred embodiment of the present invention, be not intended to limit the invention, therefore it is every according to this hair
Bright technology is practical to above example any modification, equivalent replacement, improvement and so on, still falls within technical solution of the present invention
In the range of.
Claims (1)
1. a kind of lithium ion battery aluminum plastic film damage testing method, it is characterised in that：Include the following steps：
1) detection liquid is prepared：The ethyl alcohol, again for being 8-12% by copper chloride that weight percent is 0.5-1.5%, weight percent
Measure percentage be 0.3-0.5% n-butanol, weight percent be 0.4-0.9% neopelex, weight percent
Than for 1-3% polyacrylamide and weight percent be 84-88% water be hybridly prepared into detection liquid；Detect liquid each component
The sum of weight percent is 100%；
2) it examines：Aluminum plastic film to be tested is put into the detection liquid prepared and obtained in step 1) and impregnates 0.5-2min, is then seen
The variation of plastic-aluminum film surface is examined, if the surface of aluminum plastic film has the copper of rufous to be precipitated, judges that aluminum plastic film has breakage；If aluminum plastic film
Surface there is no any variation, then judge aluminum plastic film without breakage.
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| CN201610852593.3A CN106290355B (en) | 2016-09-26 | 2016-09-26 | Lithium ion battery aluminum plastic film damage testing method |
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| CN201610852593.3A CN106290355B (en) | 2016-09-26 | 2016-09-26 | Lithium ion battery aluminum plastic film damage testing method |
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| CN106290355A CN106290355A (en) | 2017-01-04 |
| CN106290355B true CN106290355B (en) | 2018-10-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152192A (en) * | 2017-12-11 | 2018-06-12 | 合肥国轩高科动力能源有限公司 | A kind of detection method of lithium ion battery aluminum plastic film corrosion failure |
| CN109709029B (en) * | 2019-01-18 | 2024-04-02 | 溧阳卓越新材料科技有限公司 | Aluminum foil passivation effect test method and test device for aluminum plastic film |
| CN111141755B (en) * | 2019-12-31 | 2022-11-11 | 国联汽车动力电池研究院有限责任公司 | Method for detecting internal defects of battery cell |
| CN111766272A (en) * | 2020-06-18 | 2020-10-13 | 合肥国轩高科动力能源有限公司 | Battery aluminum-plastic film pit punching damage detection liquid and detection method thereof |
| CN116274562A (en) * | 2023-03-06 | 2023-06-23 | 佛山市顺德区华峻杨铜业有限公司 | Stamping process for copper product processing |
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| GB2303373A (en) * | 1995-07-18 | 1997-02-19 | Laporte Industries Ltd | Surface coating composition |
| CN202434655U (en) * | 2011-12-28 | 2012-09-12 | 天津力神电池股份有限公司 | Polymer lithium ion battery aluminum-plastic membrane damage detection device |
| CN103033543A (en) * | 2011-09-30 | 2013-04-10 | 深圳市海盈科技有限公司 | Method for detecting damage of aluminum plastic membrane shell used for lithium ion battery |
| CN104390957A (en) * | 2014-10-20 | 2015-03-04 | 深圳市巨兆数码有限公司 | Aluminum plastic membrane detection method |
-
2016
- 2016-09-26 CN CN201610852593.3A patent/CN106290355B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| GB2303373A (en) * | 1995-07-18 | 1997-02-19 | Laporte Industries Ltd | Surface coating composition |
| CN103033543A (en) * | 2011-09-30 | 2013-04-10 | 深圳市海盈科技有限公司 | Method for detecting damage of aluminum plastic membrane shell used for lithium ion battery |
| CN202434655U (en) * | 2011-12-28 | 2012-09-12 | 天津力神电池股份有限公司 | Polymer lithium ion battery aluminum-plastic membrane damage detection device |
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Effective date of registration: 20240207 Address after: 213000, No. 617, Wharf West Street, Kunlun Street, Liyang City, Changzhou City, Jiangsu Province Patentee after: LIYANG ZHUOYUE NEW MATERIAL TECHNOLOGY CO.,LTD. Country or region after: China Address before: 523000 Dongxing Industrial Zone, Kangle Road, Hengli Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN ZHUOYUE NEW MATERIAL TECHNOLOGY Co.,Ltd. Country or region before: China |