Charging circuit for charging a rechargeable battery and for preventing consumption of rechargeable battery power by the charging circuit
US6064184A · kind A · utility
2Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1999 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Jan 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charging circuit is provided with a charge control switch connected in series with a rechargeable battery, and a current sensing circuit to determine whether or not current flows through the rechargeable battery. A charging control circuit is also included to determine a charge state of the rechargeable battery and to control operation of the charge control switch. Further an operation control circuit for allowing operation of the charging control circuit in response to current flow through the rechargeable battery determined by the current sensing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.