Nonaqueous electrolyte secondary battery separator, nonaqueous electrolyte secondary battery laminated separator, nonaqueous electrolyte secondary battery member, and nonaqueous electrolyte secondary battery
US10014503B2 · kind B2 · utility
1Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Nov 28, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Nov 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a nonaqueous electrolyte secondary battery separator including a porous film containing, as a main component, polyolefin having a weight average molecular weight of not less than 500,000, the nonaqueous electrolyte secondary battery separator having an MD orientation ratio of 58% to 80%, a degree of MD orientation of 70% to 80%, and a degree of TD orientation of 65% to 85%, the nonaqueous electrolyte secondary battery separator having a film thickness of not more than 14 μm, and the nonaqueous electrolyte secondary battery separator being excellent in shutdown temperature and puncture strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.