Method for accurately and precisely calculating state of charge of a sodium-sulfur battery
US8957640B2 · kind B2 · utility
1Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Oct 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An accurately and precisely calculation of the state of charge of a sodium-sulfur battery may be made by determining a state of charge Qr according to expression (1) given below even if the sodium-sulfur battery is applied to compensate for fluctuations in the power generated by a natural energy generating device: Qr=100×(1−(Qu/(Qa−Qsf))) . . . (1) where Qu: used capacity; Qa: product capacity; and Qsf: residual capacity in final year; and Qsf=f1(Cef) . . . (2) where f1(Cef): conversion function for determining the residual capacity Qsf in the final year on the basis of the equivalent cycle Cef in final year.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.