Wireless power transmission device
US9912198B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power transmission device for wirelessly transmitting power to a wireless power reception device, according to one embodiment of the present invention, comprises: a first transmission coil for transmitting power to the wireless power reception device through a magnetic field; and a second transmission coil for transmitting power to the wireless power reception device through a magnetic field and arranged on the inner side of the first transmission coil, wherein the wireless power transmission device transmits power to the wireless power reception device through one coil between the first transmission coil and the second transmission coil on the basis of a coupling state between the wireless power transmission device and the wireless power reception device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.