Contactless power supply device and transmitter device
US10951069B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2020 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jul 21, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A contactless power supply device includes: a power transmitter, and a power receiver configured to accept a power transmission from the power transmitter without contact; the power transmitter including a transmitter coil for supplying power to the power receiver via a receiver coil in the power receiver; a power supply circuit including a power source configured to supply direct-current power, and a plurality of switching elements connected in a full-bridge or half-bridge configuration between the power source and the transmitter coil; the plurality of switching elements switching between on and off states at a predetermined frequency to thereby convert the direct-current power supplied by the power source into alternating-current power of a predetermined frequency which is supplied to the transmitter coil; an auxiliary coil arranged to be capable of electromagnetic coupling with the transmitter coil; and a capacitive element configured for connection to the auxiliary coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.