Method of charging battery based on calcualtion of an ion concentration of a solid active material and battery charging control system
US8334675B2 · kind B2 · utility
17Cited by
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6Claims
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Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Dec 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/007182
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller in a charging control system controls a charger to heat a battery at a low temperature by pulse charging and discharging up to a desired temperature and then moves to a normal charging mode. The controller calculates an ion concentration of an active material at electrode portions of the battery on the basis of the temperature data and the electric current data obtained, switch the pulse charging and discharging between a charging mode and a discharging mode on the basis of a pulse width when the ion concentration reaches a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.