Wireless battery charger
US10277059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless battery charging system includes an inductive receiving member for receiving an AC signal for output to a matching circuit having a variable impedance with variable matching parameters. The output of the matching circuit drives a rectifier circuit for converting the inputted AC signal to a first DC voltage and having variable rectifier parameters to vary the voltage drop thereacross. A DC-to-DC converter for converting the first DC voltage to a regulated voltage for charging the battery. A current sensor senses current through the inductive receiving member, rectifier circuit and DC-to-DC converter. A controller senses the voltage drop across each of the matching circuit, rectifier circuit and DC-to-DC converter and the current there through to determine power dissipation in each of the matching circuit, rectifier circuit and DC-to-DC converter. The power distribution in each of the matching circuit, the rectifier circuit and the DC-to-DC converter can then be varied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.