Charge-discharge control circuit, over-charge prevention circuit, and over-discharge prevention circuit
US5880575A · kind A · utility
42Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Jan 16, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The charge-discharge control circuit prevents over-charge and over-discharge of a plurality of series connected batteries. It is provided with a detection circuit to determine the state of charge and discharge of the batteries, at least one bypass circuit connected in parallel with one of the batteries, and a connection circuit which, in response to results from the detection circuit, selectively connects the bypass circuit to a battery determined to be in an approximately fully charged state or approximately fully discharged state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.