Device for transmitting power contactlessly through resonant inductive coupling for recharging a motor vehicle
US11979031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Jul 28, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Transmitter or receiver resonant circuit for carrying out contactless power transmission via resonant inductive coupling to a receiver or transmitter resonant circuit, comprising a first capacitance and a first winding, the first winding comprising an inductance and a first resistance, the transmitter resonant circuit comprising a second capacitance of value C2′ and a second winding, the second winding comprising a second inductance of value L2′ and a second resistance of value R2′, the transmitter resonant circuit having a natural angular frequency u>2 such that w2=1/V(L2′×C2′) and a natural frequency f2 such that f2=w2/(2π), characterized in that the value of the second inductance varies in a predetermined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.