Non-contact power feeding device used in torque sensor having a coil enclosed in peripheral side of a resonance coil and is magnetically coupled with the resonance coil
US9960641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2015 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Jan 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-contact power-feeding device comprises: a power transmitting unit that includes a first antenna coil, an oscillator and a driver that enables generation of an AC magnetic field via the first antenna coil based upon a signal provided by the oscillator; and a power receiving unit that includes a second antenna coil that is magnetically coupled with the first antenna coil, wherein the first antenna coil comprises: a flat-plane spiral resonance coil wound with a plurality of turns; and a flat-plane spiral power-feeding coil that is wound with a plurality of turns outward relative to the resonance coil so as to surround the resonance coil, and is magnetically coupled with the resonance coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.