Wireless charging device
US11133716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Jun 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To realize a vertical type wireless charging device capable of detecting a metal foreign object. The wireless charging device comprises a holder, a power transmission coil, a thermal sensor, a controller, and a warning device. The power transmission coil is disposed outside the side part of the holder. The thermal sensor is disposed at the bottom part of the holder. When the temperature rising rate is not less than 20° C. per five minutes, the controller judges that a metal foreign object exists between the power transmission coil and the electronic device, and the foreign object generates unusual heat. The controller stops wireless charging from the power transmission coil to the electronic device. The controller starts the warning device to alert the user that a foreign object is mixed in the holder and generates unusual heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.