Battery lockout circuit and battery pack using same
US5604415A · kind A · utility
8Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Dec 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lockout circuit is provided in a battery pack (10) which blocks charging by incompatible chargers while allowing charging by a compatible charger (12). The battery comprises a battery cell or cells (22), and a switch circuit (24). The switch circuit blocks charge current until a switch disable signal is provided to a switch disable contact (18). The switch circuit provides a one way bypass so that the battery may provide power to a device. To eliminate voltage drop while powering a device, a current sense circuit is provided to detect discharge current, and disable the switch circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.