Inductive battery charger system with primary transfomer windings formed in a multi-layer structure
US8299753B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2012 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Mar 21, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a planar inductive battery charging system designed to enable electronic devices to be recharged. The system includes a planar charging module having a charging surface on which a device to be recharged is placed. Within the charging module and substantially parallel to the charging surface are multiple primary windings formed in a multi-layer structure that couple energy inductively to a secondary winding formed in the device to be recharged. A winding of a first layer is offset relative to a winding of a second layer. The invention also provides secondary modules that allow the system to be used with conventional electronic devices not formed with secondary windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.