Systems and methods for providing wireless power to a portable unit
US9356473B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2009 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jul 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00034
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless charging system for inductively charging and/or powering a device. The system includes a stationary base system and a moving subject. The stationary base system includes an array of primary coils that are adapted to generate a magnetic field, and a sensor system. The moving subject carries a device that includes a secondary coil that can be inductively charged and/or powered by the magnetic field emitted from the primary coil, and a magnet to be tracked by the sensor system. The moving subject can move in proximity to a surface of the stationary base system. The sensor system is adapted to communicate the location of the moving subject along the surface, wherein those coils closest to the moving subject may be activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.