Digital ping lockout in a multi-coil wireless charging device
US11605987B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Jun 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to detect an object in proximity to a surface of the charging device through a passive ping. The controller is also configured to ping the detected object with an active ping, and determine whether a ping response is received from the object in response to the one or more active pings from the charging device. Additionally, the controller is configured to stop the active pinging of the detected object when no ping response is received in the charging device after a count of successively issued active pings from the at least one coil exceeds a predetermined number. The result is lockout of digital pinging when passive pinging detects an object that is non-responsive to active pings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.