Wireless power transmission system for selectively powering one or more of a plurality of receivers
US9143010B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/37
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power transmission system according to an embodiment of the present invention is a wireless power transmission system performing non-contact power transmission from a wireless power feeder selectively to a plurality of wireless power receivers, and each of the plurality of wireless power receivers comprises a power receive resonance circuit including a power receive coil and a power receive capacitor, and the wireless power feeder comprises a power feed coil and a control circuit supplying AC power to the power feed coil. The control circuit in the wireless power feeder performs power supply selectively to the plurality of wireless power receivers by changing frequency of the AC power on the basis of a magnetic field resonance effect between the power feed coil and the power receive coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.