Charging device
US8975870B2 · kind B2 · utility
11Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Jun 2, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charging device supplies charge current to a battery group having plural secondary batteries connected in series to perform charging. In the charging device, a discharge route circuit for discharging charge current to be supplied to the secondary battery when the battery voltage of the secondary battery exceeds a predetermined voltage while charging is provided to every secondary battery. Also provided is a cut-off circuit for cutting off the discharge route circuit from each secondary battery after charging is completed. Discharge at a discharge route circuit is suppressed and energy efficiency is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.