Wireless power system with a self-regulating wireless power receiver
US9608454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Aug 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00045
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and a system for self-regulating wireless power transmitted to a wireless power receiver (WPR) are provided. An auto-tuning network is operably coupled within the WPR. The auto-tuning network includes an impedance network that dynamically increases, decreases, or maintains an amount of the received wirelessly transmitted power by detecting changes in a rectifier load disposed in the WPR and/or in a rectifier output voltage 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 operates over a limited operating range to enable a simpler design for passing electromagnetic compliance regulations. 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 the WPR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.