Discharge control circuit of batteries
US6346795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discharge control circuit that securely prevents an over discharge of a battery. The control circuit includes a discharge control switch connected to the battery for cutting off a discharge current of the battery in response to a discharge stop signal. A control circuit is connected to the battery and the discharge control switch generates the discharge stop signal for deactivating the discharge control switch when a voltage of at least one cell reaches a lower limit. The control circuit includes a switch holding circuit for continuously supplying the discharge stop signal to the discharge control switch for a predetermined time after the discharge stop signal is generated regardless of the cell voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.