State of charge indicator for a battery charger
US8796995B2 · kind B2 · utility
810Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2011 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for indicating state of charge of a battery being charged by a charger. The method includes: supplying a charging current from a battery charger to a battery pack; determining voltage of battery cells residing in the battery pack; and illuminating a visual indicator on the battery charger to indicate state of charge of the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.