Coil driving in wireless charging system
US11750030B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 30, 2020 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Dec 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/79
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless charging system is configured to charge one or more receiver devices simultaneously. The wireless charging system includes multiple coils that may be driven independently based on a feedback system with one or more feedback channels. Each coil is driven by a coil driving signal selected based on a set of target characteristics. A coil drive circuit receives an input of a pulse width modulation (PWM) signal and outputs the coil driving signal to a corresponding coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.