Chargers with voltage amplitude modulation
US10644587B2 · kind B2 · utility
2Cited by
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12Claims
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Key dates
| Filing date | Aug 27, 2019 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Chargers and methods are provided which increase the charging efficiency of the chargers by implementing voltage amplitude modulation (VAM) instead of voltage frequency modulation. The charging voltage amplitude is modulated using feedback from at least one energy storage device that is being charged by the charger, while maintaining a charging voltage frequency constant at a LLC resonance frequency of the charger. A buck/boost configuration may be used to reduce maximal voltage levels and further optimize the charger's design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.