Out-of-band communication during wireless battery charging
US11342799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2019 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Nov 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described herein is a wireless charging system including a wireless power transmitter and a wireless power receiver, where the wireless power receiver is part of a wireless electronic device such as a mobile telephone. The wireless power receiver is used to charge a battery of the wireless electronic device and can include both a closed-loop DC-DC converter, such as a buck charger, and an open-loop DC-DC converter, such as a switched capacitor charger. In addition to an in-band communication channel between the power transmitter and the power receiver, the system also includes an out-of-band communication channel through which the power transmitter and the power receiver can exchange control signals, helping to avoid interference that can occur in the in-band communication channel when using the open-loop DC-DC converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.