Battery charger for preventing both overshoot charging currents and overcharged battery voltage during mode transitions and method thereof
US7449865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2004 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/007182
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a battery charger and a method for preventing both an overshoot charging current and an overcharged battery voltage during a mode transition. The battery charger includes a charging regulation circuit having an input terminal, an output terminal, and a control terminal, in which the charging regulation circuit outputs a charging current whose amount is regulated based on a first regulation signal at the control terminal. The battery charger also includes an operational amplifier having a positive input terminal, a negative input terminal, and an output terminal for generating the first regulation signal; The battery charger contains a first switch unit and a second switch unit for controlling current flow in the battery charger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.