Wireless power transmitting apparatus and foreign object detection method of the same
US10498176B2 · kind B2 · utility
2Cited by
0References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Sep 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for detecting a foreign object of a wireless power transmitting apparatus according to an embodiment of the present invention includes: outputting ping signals periodically for sensing a wireless power receiving apparatus; sensing input current for the ping signals; comparing the sensed input current with a predetermined current value; and when the sensed input current for a plurality of the ping signals exceeds the predetermined current value, determining that there is a foreign object on a surface of the wireless power transmitting apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.