Inductive battery recharging system with peak voltage detection
US7208912B2 · kind B2 · utility
28Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0044
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for inductively charging a rechargeable battery of a portable device in a vehicle via a primary circuit that includes a primary inductive coil, a secondary circuit that includes a secondary inductive coil, and a rectifying circuit electrically coupled to the rechargeable battery. A primary coil is energized with a supply voltage. A frequency of the supply voltage is varied. A peak voltage of the primary circuit is detected. The frequency of the supply voltage is adjusted to a respective frequency associated with the peak voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.