Wireless power transfer method and system
US9742222B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Feb 1, 2017 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Feb 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A new resonance-based wireless power transfer system is disclosed. The new resonance-based wireless power transfer system includes a power transmitter and a power receiver. The power transmitter and the power receiver are both oscillator-based circuits, but unlike prior systems, their resonant frequencies are different. The difference between the transmitter's resonant frequency and the receiver's resonant frequency is set between a lower bound and an upper bound to ensure that the new resonance-based wireless power transfer system will have only one oscillation frequency while maintaining high power transfer efficiency over varied distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.