Foreign object detection circuit and foreign object detection method
US11791666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2022 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Oct 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure includes a foreign object detection circuit and a foreign object detection method. The method comprises: step a) establishing a communication link between a transmitter and a receiver in a wireless power transmission system; step b) performing, by the transmitter and the receiver, wireless power transmission based on the magnetic coupling; and step c) measuring a quality factor of a receiver terminal, and determining whether a foreign object exists in the wireless power transmission system or not based on the quality factor. In accordance with a foreign object detection circuit and a foreign object detection method provided by the present invention, the problem that the foreign object cannot be detected effectively in the prior art is solved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.