Wireless power feeding system and wireless power feeding method
US10110068B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Aug 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object is to provide a power feeding system and a power feeding method which are more convenient for a power feeding user at the power receiving end, without causing increases in complexity and size of devices. An object is to provide a power feeding system and a power feeding method which also allow a power feeding provider (a company) which feeds power (at the power transmitting end) to supply power without waste. A power feeding device which wirelessly supplies power to a power receiver detects the position and the resonant frequency of the power receiver by receiving a position and resonant frequency detection signal using a plurality of sub-carriers having different frequencies from the power receiver, and controls the frequency of a power signal to be transmitted to the power receiver on the basis of the information. An efficient power feeding service can be offered by transmitting a power signal to the power receiver at an optimum frequency for high power transmission efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.