System and method for detecting inadequate wireless coupling and improving in-band signaling in wireless power transfer systems
US9680531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2015 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Jan 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00034
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for receiving wireless power is provided. The apparatus comprises a receive coupler configured to receive the wireless power from a wireless power transmitter. The apparatus comprises a receive circuit electrically connected to the receive coupler, the receive circuit configured to provide power to a load. The apparatus comprises a controller circuit configured to provide a first amount of power from the receive circuit to the load. The controller circuit is further configured to reduce the first amount of power to a second amount of power for a duration of communication with the wireless power transmitter to increase a difference between a first impedance and a second impedance of the receive circuit compared to when the first amount of power is provided to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.