CN105259506A - Examination method of forming die of plastic-aluminum composite membrane of polymer lithium-ion battery - Google Patents
Examination method of forming die of plastic-aluminum composite membrane of polymer lithium-ion battery Download PDFInfo
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- CN105259506A CN105259506A CN201510559883.4A CN201510559883A CN105259506A CN 105259506 A CN105259506 A CN 105259506A CN 201510559883 A CN201510559883 A CN 201510559883A CN 105259506 A CN105259506 A CN 105259506A
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Abstract
The invention, which belongs to the field of the polymer lithium-ion battery manufacture technology, discloses an examination method of a forming die of a plastic-aluminum composite membrane of a polymer lithium-ion battery. In the prior art, the existing examination die has the defect of wrong judgment. According to the invention, actual processing of a batter is carried out based on lithium battery production simulation and then examination is carried out. The method comprises the following steps: (1), carrying out battery housing moulding; (2), manufacturing a finished battery; (3), obtaining a serial number of each position of the finished battery; (4), carrying out high-temperature high-humdity examination; and (5), carrying out determination. With the method, the actual process of the product application is met; the operation becomes simple, convenient, and effective; a fault point of a die can be determined conveniently in real time; stability of batch production of the batteries can be fully guaranteed; and thus the examination method had the great practical value during the production process.
Description
Technical field
The invention belongs to polymer Li-ion battery manufacturing technology, specifically the method for inspection of the plastic-aluminum combined film molding mold of a kind of polymer Li-ion battery.
Background technology
According to the difference of lithium ion battery electrolyte used, lithium ion battery is divided into liquid lithium ionic cell (LiquifiedLithium-IonBattery, referred to as LIB) and polymer Li-ion battery (PolymerLithium-IonBattery, referred to as PLB) or plastic lithium-ion battery (PlasticLithiumIonBatteries, referred to as PLB).
Polymer Li-ion battery positive and negative pole material used is all identical with liquid lithium ion, and positive electrode is divided into cobalt acid lithium, LiMn2O4, ternary material and LiFePO 4 material, and negative pole is graphite, and battery operated principle is also basically identical.Their key distinction is electrolytical difference, liquid lithium ionic cell uses liquid electrolyte, polymer Li-ion battery then replaces with solid polymer electrolyte, this polymkeric substance can be " dry state ", also can be " colloidal state " that major part adopts gel-form solid polymer electrolyte at present.
On battery structure, polymer Li-ion battery adopts aluminum-plastic composite membrane as battery case, and play a protective role to battery, importance is self-evident.The shaping quality of aluminum-plastic composite membrane is directly by the impact of mould.
Require in battery use procedure that aluminum-plastic composite membrane possesses the function by the materials such as inside battery electrolytic solution, both positive and negative polarity pole piece and external environs, simultaneously due to the special formation of aluminum-plastic composite membrane, aluminum-plastic composite membrane can be processed into the shape of needs according to product requirement, as shapes such as square, circle, arcs.In battery production, the shaping general employing battery mould of aluminum-plastic composite membrane carries out aluminum-plastic composite membrane as frock and is shaped to battery case, and in forming process, battery mould plays important effect, and the inspection therefore how carrying out battery mould is most important.
The inspection of current battery mould is generally the mechanical dimension carrying out die punch and die after Mould Machining completes and measures, choose four pin positions after simultaneously shaping to aluminum-plastic composite membrane and carry out illumination judgement and thickness measure (being similar to darkroom to measure), aluminium lamination tomography situation and the rear aluminum plastic film thickness that stretches when main test is shaping, the method can carry out the shaping situation judging of aluminum-plastic composite membrane.Exist shortcoming be aluminum-plastic composite membrane stretch after due to turning bit comparison thin, when the radius of corner (R value) of mould corner location arranges unreasonable exist judge by accident.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition overcomes the defect that prior art inspection mould exists erroneous judgement, provides the method for inspection of the plastic-aluminum combined film molding mold of a kind of polymer Li-ion battery.
To achieve the object of the present invention, the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery of the present invention, is characterized in that comprising the following steps:
(1) forming battery shell: aluminum-plastic composite membrane is shaped to battery case with mould;
(2) resultant battery is made: battery case and battery are made resultant battery;
(3) number: each position of resultant battery is numbered;
(4) hot and humid inspection: put into turnover box after under ambient temperature conditions resultant battery being full of electricity, then constant temperature and humidity tank turnover box being put into temperature is 60 ± 2 DEG C, relative humidity is RH > 90%, store 96h; Resultant battery outward appearance is observed and record therebetween every 24h; After 96h, turnover box is taken out, taken out in turnover box by battery in constant temperature and humidity tank, and observe battery outward appearance after resultant battery is positioned over environment temperature 2h;
(5) judge: through observing, if resultant battery is without open defect, be then judged to be that mould is qualified, this mould can be utilized to produce in batches, if resultant battery exists open defect, be then judged to be that mould is defective, must keep in repair the position of the corresponding defect of this mould.
As optimization technique means: described environment temperature is 23 ± 2 DEG C.Every 24h, turnover box is taken out to observe resultant battery outward appearance and record in constant temperature and humidity tank therebetween.Through observing, the open defect of resultant battery existence comprises the corrosion foaming of aluminum-plastic composite membrane, layering, leakage.Maintenance comprises carries out the radius of corner of mould corner location, the maintenance of die clearance.
The invention has the beneficial effects as follows: under the present invention adopts the shaping aft-loaded airfoil of aluminum-plastic composite membrane to become resultant battery to carry out hot and humid condition again, speeding-up simulation is tested, and more meets product and uses real process, provide a kind of better decision method simultaneously to mold acceptance.Aluminum-plastic composite membrane is shaping when going wrong, and as hot and humid detection occurs as foaming phenomena first, can judge abort situation fast and carry out the maintenance of battery mould, avoiding the bulk article caused because of battery mould problem to occur failure phenomenon.Can judge the trouble spot of mould in real time, easily, have more practical value in process of production.
Embodiment
The present invention will be further described below.
The method of inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery of the present invention, it comprises the following steps:
(1) forming battery shell: aluminum-plastic composite membrane is shaped to battery case with mould;
(2) resultant battery is made: battery case and battery are made resultant battery;
(3) number: each position of resultant battery is numbered (position, turning especially along resultant battery edge is numbered);
(4) hot and humid inspection: put into turnover box after under ambient temperature conditions resultant battery being full of electricity, then constant temperature and humidity tank turnover box being put into temperature is 60 ± 2 DEG C, relative humidity is RH > 90%, store 96h; Resultant battery outward appearance is observed and record therebetween every 24h; After 96h, turnover box is taken out, taken out in turnover box by battery in constant temperature and humidity tank, and observe battery outward appearance after resultant battery is positioned over environment temperature 2h;
(5) judge: through observing, if resultant battery is without open defect, be then judged to be that mould is qualified, this mould can be utilized to produce in batches, if resultant battery exists open defect, be then judged to be that mould is defective, must keep in repair the position of the corresponding defect of this mould.
During concrete enforcement: environment temperature controls to be advisable at 23 ± 2 DEG C.Every 24h, turnover box is taken out to observe resultant battery outward appearance and record in constant temperature and humidity tank therebetween.Through observing, the open defect of resultant battery existence comprises the corrosion foaming of aluminum-plastic composite membrane, layering, leakage.Maintenance comprises carries out the radius of corner of mould corner location, the maintenance of die clearance.
The present invention simulates the actual battery that is processed into of lithium battery production and tests, inspection adopts hot and humid method, effectively easy and simple to handle, be up to the standards if hot and humid under stringent condition, mould is verified, if there is corrosion through hot and humid inspection aluminum-plastic composite membrane to bubble, layering, the open defects such as leakage, mould need re-start the radius of corner as mould corner location, the maintenances such as die clearance, can judge that battery mould meets the requirements after the assay was approved through hot and humid after maintenance, battery mould is produced in batches after the assay was approved again, fully can ensure the stability that battery is produced in batches.
Example below by way of form introduction is tested according to the present invention:
Claims (5)
1. the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery, is characterized in that comprising the following steps:
(1) forming battery shell: aluminum-plastic composite membrane is shaped to battery case with mould;
(2) resultant battery is made: battery case and battery are made resultant battery;
(3) number: each position of resultant battery is numbered;
(4) hot and humid inspection: put into turnover box after under ambient temperature conditions resultant battery being full of electricity, then constant temperature and humidity tank turnover box being put into temperature is 60 ± 2 DEG C, relative humidity is RH > 90%, store 96h; Resultant battery outward appearance is observed and record therebetween every 24h; After 96h, turnover box is taken out, taken out in turnover box by battery in constant temperature and humidity tank, and observe battery outward appearance after resultant battery is positioned over environment temperature 2h;
(5) judge: through observing, if resultant battery is without open defect, be then judged to be that mould is qualified, this mould can be utilized to produce in batches, if resultant battery exists open defect, be then judged to be that mould is defective, must keep in repair the position of the corresponding defect of this mould.
2. the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery according to claim 1, is characterized in that: described environment temperature is 23 ± 2 DEG C.
3. the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery according to claim 1, is characterized in that: taken out to observe resultant battery outward appearance and record by turnover box in constant temperature and humidity tank every 24h therebetween.
4. the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery according to claim 1, is characterized in that: through observing, and the open defect of resultant battery existence comprises the corrosion foaming of aluminum-plastic composite membrane, layering, leakage.
5. the method for inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery according to claim 1, is characterized in that: described maintenance comprises carries out the radius of corner of mould corner location, the maintenance of die clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510559883.4A CN105259506B (en) | 2015-09-07 | 2015-09-07 | The method of inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery |
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| CN201510559883.4A CN105259506B (en) | 2015-09-07 | 2015-09-07 | The method of inspection of the plastic-aluminum combined film molding mold of polymer Li-ion battery |
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| CN105259506A true CN105259506A (en) | 2016-01-20 |
| CN105259506B CN105259506B (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701909A (en) * | 2018-12-18 | 2019-05-03 | 东莞市振华新能源科技有限公司 | A method of screening rectangular lithium ion battery leakage |
| CN118554130A (en) * | 2024-07-24 | 2024-08-27 | 天能新能源(湖州)有限公司 | Interface buffer multilayer gradient composite membrane and preparation method and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221026A (en) * | 2019-06-05 | 2019-09-10 | 苏州安洁科技股份有限公司 | The recessive undesirable characterization processes of product |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288107A (en) * | 1999-09-14 | 2001-03-21 | 三洋电机株式会社 | Compression device |
| CN103872276A (en) * | 2014-03-25 | 2014-06-18 | 深圳市振华新材料股份有限公司 | Lithium ion battery filled polymer composition, filling method, lithium battery and application |
| CN103915643A (en) * | 2013-01-04 | 2014-07-09 | 深圳市鼎力源科技有限公司 | Method for improving performance of square aluminum-shell battery |
| CN104656028A (en) * | 2014-12-11 | 2015-05-27 | 吴坚 | Dedicated mold for testing electrical property of lithium iron phosphate |
-
2015
- 2015-09-07 CN CN201510559883.4A patent/CN105259506B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288107A (en) * | 1999-09-14 | 2001-03-21 | 三洋电机株式会社 | Compression device |
| CN103915643A (en) * | 2013-01-04 | 2014-07-09 | 深圳市鼎力源科技有限公司 | Method for improving performance of square aluminum-shell battery |
| CN103872276A (en) * | 2014-03-25 | 2014-06-18 | 深圳市振华新材料股份有限公司 | Lithium ion battery filled polymer composition, filling method, lithium battery and application |
| CN104656028A (en) * | 2014-12-11 | 2015-05-27 | 吴坚 | Dedicated mold for testing electrical property of lithium iron phosphate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701909A (en) * | 2018-12-18 | 2019-05-03 | 东莞市振华新能源科技有限公司 | A method of screening rectangular lithium ion battery leakage |
| CN118554130A (en) * | 2024-07-24 | 2024-08-27 | 天能新能源(湖州)有限公司 | Interface buffer multilayer gradient composite membrane and preparation method and application thereof |
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| CN105259506B (en) | 2018-04-10 |
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Effective date of registration: 20191226 Address after: 311402 No. 251, Yingbin North Road, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Co-patentee after: Shenzhen Xinaoke Cable Co., Ltd. Patentee after: Hangzhou Future Power Technology Co., Ltd. Address before: 311400 No. 251 Yingbin North Road, Hangzhou, Zhejiang, Fuyang Patentee before: Hangzhou Future Power Technology Co., Ltd. |