Circuit to prevent excessive rechargeable battery discharge
US5477124A · kind A · utility
53Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit effectively prevents excessive discharge of a rechargeable battery that is either detachable from, or internal to an electrical apparatus. The circuit has a battery voltage detector, a comparitor to compare the battery voltage with a reference voltage, and a controller to cut-off power drain from a discharged battery when its voltage drops below the reference voltage. The discharged battery is electrically cut-off from both the load and the comparitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.