Method for calculating number of healthy strings of sodium-sulfur battery and failure detection method using same
US8914243B2 · kind B2 · utility
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Key dates
| Filing date | Oct 21, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A number (uo) of healthy strings of one block in a sodium-sulfur battery is determined according to expression (1), and a failure of the sodium-sulfur battery is detected on the basis of the determination of the value of the uo. This method makes it possible to properly determine a failure of the sodium-sulfur battery, which can be used to compensate for fluctuations of electric power generated by a renewable energy generating device. uo=(Qo/Qs)×us . . . (1) where Qs: used capacity of reference block; Qo: used capacity of target block; and us: number of healthy strings of reference block (us≦u).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.