Battery separator, and battery separator manufacturing method
US9023506B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Feb 8, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery separator includes a porous membrane A with a thickness of less than 10 μm including a polypropylene resin, and a porous membrane B laminated thereon including a heat resistant resin and inorganic particles or cross-linked polymer particles, wherein the porous membrane A satisfies a specific range of thickness, average pore size, and porosity, and the entire battery separator satisfies a specific range of thickness, peeling strength at the interface between the porous membrane A and the porous membrane B, and difference in air resistance between the entire battery separator and the porous membrane A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.