Wireless power transfer device and wireless charging system having same
US9660486B2 · kind B2 · utility
3Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2013 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Nov 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present specification provides a wireless power transfer device formed to transmit power to a wireless power reception device, and a power transfer unit in the wireless power transfer device comprises: a first coil formed to generate a magnetic field so as to transmit power in an induction scheme; and a second coil wound around the first coil and formed to generate a magnetic field vibrating at a resonance frequency so as to transmit power in a resonance scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.