Surface-treated steel sheet for battery cases, battery case and battery
US11223069B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Apr 26, 2012 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Apr 26, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surface-treated steel sheet for battery cases is provided which comprises a nickel-cobalt alloy layer formed at the outermost surface of a plane to be an inner surface of a battery case, wherein a Co/Ni value at the surface of the nickel-cobalt alloy layer is within a range of 0.1 to 1.5 as determined by Auger electron spectroscopy analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.