Multi-coil system and method with two-stage selection/ping for wireless power transfer
US10547207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Apr 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power transfer system is disclosed. The wireless power transfer system may comprise a first group of transmitter coils disposed in a first plane, a second group of transmitter coils disposed in a second plane, and a controller unit configured to: supply a first power to the first group, one or more transmitter coils at a time; compare a first coupling strength of the powered first transmitter coil with a first threshold; in response to determining the first coupling strength exceeding the first threshold, determine the transmitter coil as a selected transmitter coil; supply a second power to the second group, one or more transmitter coils at a time; compare a second coupling strength of the powered second transmitter coil with a second threshold; and in response to determining the second coupling strength exceeding the second threshold, determine the transmitter coil as another selected transmitter coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.