Wireless inductive power transfer
US10340738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2015 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Oct 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/345
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A power transmitter (2) for transferring power to a power receiver comprises a first inductor (307) for providing power and a second inductor (407) for receiving data signals from a power receiver. The first (307) and second (407) inductors are separate inductors in a power transfer circuit (701) and a data signal receiving circuit (702). The data signal receiving circuit (702) comprises a data extracting circuit (1007) for extracting the data signals received by the second inductor (407). The power transmitter comprises a control circuit (401) for controlling the power in dependence on the data signals. The power transmitter transfers power during power transfer periods and receives data during communication periods, communication periods corresponding to periods wherein power is low. The control circuit (401) electrically couples the data extraction circuit (1007) and the second inductor (407) from each other during communication periods and electrical decouples them during at least a part of power transfer periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.