Wireless power supply system for cooking appliance and cooking appliance
US11478103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jan 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power supply system for a cooking appliance includes a power transmission device and a power reception device. The power transmission device includes a transmission coil and a coil driving circuit coupled to the transmission coil and configured to drive the transmission coil to generate an alternating electromagnetic field and vary a resonance voltage of the transmission coil. The power reception device includes a reception coil matching the transmission coil and configured to sense the alternating electromagnetic field to generate a varying induction voltage signal that varies according to the varying resonance voltage and a communication and demodulation circuit configured to demodulate the varying induction voltage signal to output demodulated data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.