Method for determining drop in capacity of sodium—sulfur battery
US9026388B2 · kind B2 · utility
2Cited by
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4Claims
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Key dates
| Filing date | Aug 2, 2011 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It is determined that a drop in the capacity of a sodium-sulfur battery has proceeded to an abnormal level when both the following expression (1) and expression (2) hold. Qe−Qn≧K1 . . . (1) where Qe: abnormal block depth of discharge; Qn: normal block depth of discharge; and K1: block abnormality determination set point (setting value) and Qe≧K2 . . . (2) where K2: depth of discharge abnormality determination set point (setting value).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.