CN102694134A - Method for preventing surface corrosion of flexible packaging lithium-ion battery - Google Patents
Method for preventing surface corrosion of flexible packaging lithium-ion battery Download PDFInfo
- Publication number
- CN102694134A CN102694134A CN2011100697680A CN201110069768A CN102694134A CN 102694134 A CN102694134 A CN 102694134A CN 2011100697680 A CN2011100697680 A CN 2011100697680A CN 201110069768 A CN201110069768 A CN 201110069768A CN 102694134 A CN102694134 A CN 102694134A
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- China
- Prior art keywords
- ion battery
- lithium ion
- battery
- diaphragm
- protective film
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a method for preventing surface corrosion of a flexible packaging lithium-ion battery. The method comprises: after a battery core positive sealing process during flexible packaging lithium-ion battery assembling, attaching a protective film additionally; subjecting the protective film attached lithium-ion battery to the normal operation processes of post-baking fluid injection, formation, air suction, capacity grading and shaping in order; and tearing off the attached protective film before final lithium-ion battery detection and storage. The method of the invention protects the flexible packaging battery in production from the perspective of physical protection, effectively improves product qualification rate and reduces production cost.
Description
Technical field
The invention belongs to the lithium ion battery manufacturing process technology field, particularly relate to a kind of method of preventing the flexible packing lithium ion battery surface corrosion.
Background technology
Along with the lithium ion battery broad application and produce perfectly, production technology is progressively optimized improvement, and the improvement of production technology directly has influence on the qualification rate that lithium ion battery is produced.Present flexible packing lithium ion battery peplos is a kind of aluminum-plastic composite membrane of three-decker, and the appearance of aluminum-plastic composite membrane is easy to by the electrolyte corrosion, and in case be stained with electrolyte; Electrolyte will slowly be penetrated into the aluminium lamination in the middle of the aluminum-plastic composite membrane; Have a strong impact on the external packing of flexible-packed battery, even also can destroy aluminium lamination, cause battery in the dead of night to wait; For not had effective processing method, can only battery be scrapped basically at present by the soft-package battery surface of electrolyte corrosion.Therefore in the flexible packing lithium ion battery production process, should avoid electrolyte to attach soft-package battery surface, but that the battery that causes the battery surface corrosion to cause because of electrolyte in the actual production is scrapped be not within minority as far as possible, be almost had about 1%.
Summary of the invention
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and provide a kind of from the physical protection angle to flexible-packed battery protect, improve product percent of pass in process of production, the method for the prevention flexible packing lithium ion battery surface corrosion that reduces production costs.
The technical scheme that the present invention adopts is: the method for this prevention flexible packing lithium ion battery surface corrosion is: electric wicking surface increases pasting protective film after the electric core of lithium ion battery pack process of assembling is just sealing operation; The lithium ion battery that posts diaphragm still by fluid injection after the baking that connects successively, change into, bleed, the normal running operation operation of partial volume and integer; Before lithium ion battery detects warehouse-in at last, tear increase the diaphragm of subsides.
Diaphragm described in the technique scheme is the high temperature resistant PE diaphragm that is higher than 80 ℃.
In the technique scheme, the described pasting protective film that increases does not touch air bag to touch battery battery core part and partly is advisable.
Substantive distinguishing features of the present invention and remarkable result:
1) the present invention adopts physical method, and the surface corrosion of prevention flexible packing lithium ion battery splashes on the diaphragm of electric wicking surface if any electrolyte when battery is annotated electrolyte, and diaphragm can protect electric wicking surface can not polluted;
2) battery is bled after changing into when sealing, and flows out if any electrolyte, and diaphragm also can play a protective role;
3) battery is in the subsequent production process, and diaphragm can also avoid dust and particle on the operating desk to the destruction of electric wicking surface;
4) the PE diaphragm of the present invention's employing, the high temperature of ability more than 80 ℃ and 80 ℃;
5) the present invention through the method that increases pasting protective film avoided flexible-packed battery in process of production electrolyte and other foreign material to the destruction of battery surface; Improved the qualification rate of product; Save nearly 2% waste battery, reduced production cost, guaranteed the quality of product.
Description of drawings:
Fig. 1 is implementing procedure figure of the present invention.
Embodiment:
Referring to Fig. 1; The production and assembly operation of existing flexible packing lithium ion battery is successively: electric core just seals, toast the back fluid injection, change into, bleed, partial volume and integer, detection warehouse-in; The present invention has increased electric wicking surface pasting protective film and has torn the diaphragm operation on the basis of above-mentioned prior art; Specifically: after electric core is just sealing operation, increase electric wicking surface and paste the PE diaphragm; The lithium ion battery that posts diaphragm still by annotate electrolyte after the baking that connects successively, change into, bleed, the normal running operation operation of partial volume and integer, the diaphragm operation is torn in increase before flexible packing lithium ion battery detects warehouse-in at last.
Claims (3)
1. method of preventing the flexible packing lithium ion battery surface corrosion, it is characterized in that: electric wicking surface increases pasting protective film after the electric core of lithium ion battery pack process of assembling is just sealing operation; The lithium ion battery that posts diaphragm still by fluid injection after the baking that connects successively, change into, bleed, the normal running operation operation of partial volume and integer; Before lithium ion battery detects warehouse-in at last, tear increase the diaphragm of subsides.
2. the method for described prevention flexible packing lithium ion battery according to claim 1 surface corrosion is characterized in that: diaphragm is the high temperature resistant PE diaphragm that is higher than 80 ℃.
3. the method for described prevention flexible packing lithium ion battery according to claim 1 surface corrosion is characterized in that: the described pasting protective film that increases does not touch air bag to touch battery battery core part and partly is advisable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100697680A CN102694134A (en) | 2011-03-23 | 2011-03-23 | Method for preventing surface corrosion of flexible packaging lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100697680A CN102694134A (en) | 2011-03-23 | 2011-03-23 | Method for preventing surface corrosion of flexible packaging lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102694134A true CN102694134A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100697680A Pending CN102694134A (en) | 2011-03-23 | 2011-03-23 | Method for preventing surface corrosion of flexible packaging lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102694134A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037782A (en) * | 2018-06-26 | 2018-12-18 | 桑顿新能源科技有限公司 | A kind of pad pasting and method for adhering film improving soft bag lithium ionic cell surface folding |
-
2011
- 2011-03-23 CN CN2011100697680A patent/CN102694134A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037782A (en) * | 2018-06-26 | 2018-12-18 | 桑顿新能源科技有限公司 | A kind of pad pasting and method for adhering film improving soft bag lithium ionic cell surface folding |
| CN109037782B (en) * | 2018-06-26 | 2021-12-10 | 桑顿新能源科技(长沙)有限公司 | Film for improving surface wrinkles of soft package lithium ion battery and film pasting method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |