Non-contact power supply device and method for abnormal stop
US11190058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jul 13, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/79
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power receiving device 3 of a non-contact power supply device 1 has: a resonant circuit 20 having a receiving coil 21 for receiving power from a power transmission device 2; and a rectifier circuit 24 for rectifying power output from the resonant circuit 20. The power transmission device 2 has: a transmission coil 14 for supplying power to the power receiving device 3; a power supply circuit 10 for supplying AC power having an adjustable switching frequency to the power transmission coil 14; and a control circuit 17 that stops the power supply from the power supply circuit 10 to the transmission coil 14 when the non-contact power supply device 1 does not perform a constant voltage output operation even if the switching frequency is changed over a predetermined frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.