Noncontact power supply apparatus
US11171516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jan 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power receiver device a noncontact power supply apparatus short-circuits a resonance suppressing coil provided so as to be electromagnetically coupled to a receiver coil and notifies a power transmitter device of an output voltage abnormality when a measured value of output voltage becomes equal to or greater than an upper limit threshold, the measured value of output voltage being obtained by rectifying power received via a resonance circuit including a receiver coil configured to receive power from a transmitter coil of the power transmitter device and a resonance capacitor connected in parallel with the receiver coil. Upon receipt of the notification of the output voltage abnormality, the power transmitter device changes at least one of a voltage and switching frequency of AC power applied to the transmitter coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.