Wireless power supply apparatus
US8909966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Apr 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power supply apparatus generates an electric signal frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with a wireless power reception apparatus. The electric signal thus generated is transmitted via a transmission coil so as to generate an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field. The wireless power reception apparatus receives the electric power signal using a reception coil. A control unit changes the impedance of a resonance circuit that comprises the reception coil and a resonance capacitor, according to a reception-side code that is to correspond to the transmission-side code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.