Wireless charging systems and methods for increasing power transfer functions
US11355948B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2019 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Jun 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/21
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments describe a wireless charging system including an accessory device and a host device. The host device can include a housing having a charging surface and power transmitting circuitry coupled to a power source. The power transmitting circuitry can include an inductive transmitter coil configured to receive a first power and generate magnetic field, an amplifier coupled to the inductive transmitter coil and configured to output the first power to the inductive transmitter coil, an output sensor coupled to the inductive transmitter coil and configured to measure the first power to the inductive transmitter coil, and a power tracking controller coupled to the sensor probe. The power tracking controller can be configured to receive measurement of the first power, and generate a control signal based on the measured first power to modify an output impedance of the amplifier to output a second power different from the first power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.