In-device charging system and method for multi-chemistry battery systems
US6479962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery management system and method for an electronic device that may be powered by an AC source (using an AC adapter), or by a battery. The battery management system includes firmware configured to determine whether a battery coupled to the electronic device is rechargeable. The firmware is also coupled to and configured to control a charge switch. When the battery and an AC source are both coupled to the device, activating the charge switch causes a charging current to be applied from the AC source to the battery. The charge switch and firmware are configured to cause the charging current to not be applied to the battery if it is determined that the battery is not rechargeable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.