Electronic device and method for wirelessly transmitting power based on foreign object detection in the electronic device
US11289951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2019 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Mar 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic device including a coil, a power transmission circuit electrically connected with the coil, a detection circuit, and a control circuit. The control circuit of the electronic device configured to wirelessly output a first signal for identifying an access of a foreign object by first period intervals through the coil using the power transmission circuit, identify a change of the first signal using the detection circuit, wirelessly output the first signal by the first period intervals in response to a detection value of the changed first signal being less than or equal to a first threshold value, and wirelessly output the first signal by a second period intervals longer than the first period intervals in response to the detection value of the changed first signal exceeding the first threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.