Method for manufacturing separation film and the separation film, and battery using same
US10340491B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Dec 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for manufacturing a separator in which the tensile strength is enhanced and melt shrinkage is reduced by controlling elongation step from among the manufacturing steps thereof. Additionally, the present invention relates to a separator having superb winding processability as well as superb thermal stability due to the raised the tensile strength while maintaining a low rate of melt shrinkage. Furthermore, the present invention relates to an electrochemical battery having enhanced stability by utilizing a separator having high tensile strength and a low rate of melt shrinkage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.