Wireless charging device
US11870274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jul 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless charging device is disclosed, which includes: a charging pad and a first controller. The charging pad includes a plurality of charging units, the plurality of charging units include a first charging unit and a second charging unit. When a first electromagnetic coupling strength between the first charging unit and the to-be-charged device is greater than or equal to a first threshold, the first controller is configured to control the first charging unit to separately charge the to-be-charged device. When both the second electromagnetic coupling strength between the second charging unit and the to-be-charged device and the first electromagnetic coupling strength are less than a first threshold, and are greater than or equal to a second threshold, the first controller is configured to control the first charging unit and the second charging unit to jointly charge the target to-be-charged device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.