Apparatus and method for detecting foreign object in wireless power transmission system
US11251659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present specification discloses a method for receiving wireless power from a wireless power transmission device on the basis of foreign object detection, the method comprising the steps of: receiving a digital ping from the wireless power transmission device; transmitting identification and configuration packets to the wireless power transmission device; transmitting a foreign substance detection state packet indicating a reference Q factor value of a wireless power reception device to the wireless power transmission device; and receiving wireless power through magnetic coupling from the wireless power transmission device, on the basis of a result of foreign substance detection using the reference Q factor value by the wireless power transmission device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.