Method of controlling battery state using constant-voltage discharge
US9142977B1 · kind B1 · utility
4Cited by
1References
16Claims
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Key dates
| Filing date | Dec 13, 2012 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Mar 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0071
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery is rendered to a consistent discharged state in a two-phase battery discharge operation. In a first of the two discharge phases, a constant discharge current is drawn from the battery until a threshold battery voltage is reached. In the second of the two discharge phases, executed after the threshold battery voltage is reached during the first-phase, a time-varying discharge current is drawn from the battery at a constant battery voltage until a threshold discharge current is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.