Foreign object detection based on transmitter input parameter
US12100972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2022 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Aug 27, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.