Nonaqueous electrolyte secondary battery laminated separator
US9741990B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Nov 21, 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 laminated separator including a laminated porous film including a porous film and a porous layer. The piercing strength (S) of the laminated porous film satisfies Formula (1): 2 gf≦Sp−S≦25 gf, and the piercing strength (Sp) of the porous film after removal of the porous layer from the laminated porous film satisfies Formula (2): 300 gf≦S≦400 gf. The nonaqueous electrolyte secondary battery laminated separator is excellent in output characteristic, shutdown characteristic, and piercing strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.