Wireless power system with a self-regulating wireless power receiver
US10044228B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2016 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Mar 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and system for self-regulating wireless power transmitted to a wireless power receiver (WPR) is provided. An auto-tuning network is operably coupled within the WPR. The auto-tuning network comprises an impedance network that dynamically increases, decreases, or maintains amount of the received wirelessly transmitted power by detecting changes in a rectifier load disposed in the WPR and/or in an output voltage of the rectifier in the WPR. The auto-tuning network self-regulates the wireless power received from a wireless power transmitter (WPT) obviating the need for conventional communication messages. The WPT is hence free from a modulator/demodulator block and an out-of-band communication block and can operate over a limited operating range to enable simpler design for passing EMC regulation. Additionally, the WPR implements a receiver-maximum power-signature algorithm for enabling the WPT to detect unsupported receivers, configure its operating point and range, and terminate power transmission when not needed by WPR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.