Wireless power supply device and wireless power supply system
US10153643B2 · kind B2 · utility
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20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2015 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Dec 12, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power supply device includes a resonance circuit including a coil and a capacitor, a power supply portion that supplies AC power to the resonance circuit based on a drive signal having a prescribed drive frequency, and a controller that substantially matches the phase of the drive signal and the phase of oscillation of the resonance circuit by switching the direction of a current that flows into the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.