Wireless power supply system, wireless power transmitting device, and wireless power receiving device
US8933583B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2011 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power supply system includes: a wireless power transmitting device configured to include a variable resonant circuit having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; a power transmission control unit configured to variably control the resonant frequency characteristic of the variable resonant circuit; and a plurality of wireless power receiving devices configured to include respective unique resonant circuits having respective unique resonant frequency characteristics which are different to each other, and to wirelessly receive power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the unique resonant circuit tuning to a resonant frequency of the variable resonant circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.