Battery charging control
US7012402B2 · kind B2 · utility
12Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2002 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Feb 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless microphone is provided with a recharging circuit which determines if a battery in the microphone is a rechargeable type and can be safely recharged. The recharging circuitry in the microphone, which could also be included in other handheld wireless devices, determines if a battery is in a charged state where it is difficult to distinguish rechargeable and non-rechargeable batteries. If so the battery is discharged until the battery reaches a charged state where non-rechargeable batteries can be readily distinguished from rechargeable batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.