Systems and methods for induction charging with a closed magnetic loop
US9118203B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | May 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and computer program products for induction charging with a closed magnetic loop are described herein. In one aspect, an apparatus for wireless power transmission comprises a plurality of coplanar coils, each of the plurality of coplanar coils configured to be individually energized and produce a magnetic field. Further, the controller is configured to reverse polarity of the magnetic field of at least one of the plurality of coplanar coils based on a measure of coupling between coils and to select at least two of the plurality of coplanar coils for wireless power transmission based on the measure of coupling between coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.