Wireless power feeder and wireless power receiver
US8800738B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2011 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S30/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power feeder 116 feeds power from a feeding coil L2 in the ground to a receiving coil L3 incorporated in an EV by wireless using a magnetic field resonance phenomenon between the feeding coil L2 and receiving coil L3. A plurality of feeding coils L2a to L2d are buried in the ground. Receivers 112a to 112d are buried in corresponding respectively with the feeding coils L2a to L2d. The plurality of receivers 112 each receive a position signal transmitted from a transmitter 110 of the EV. A feeding coil circuit 120 supplies AC power to the feeding coil L2 corresponding to the receiver 112 that has received the position signal to allow the feeding coil L2 to feed power to the receiving coil L3 by wireless.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.