System and method for inductive charging of portable devices
US8629654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2012 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Apr 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for variable power transfer in an inductive charging or power system. In accordance with an embodiment the system comprises a pad or similar base unit that contains a primary, which creates an alternating magnetic field. A receiver comprises a means for receiving energy from the alternating magnetic field and transferring it to a mobile device, battery, or other device. In accordance with various embodiments, additional features can be incorporated to provide greater power transfer efficiency, and to allow the system to be easily modified for applications that have different power requirements; such as variations in the material used to manufacture the primary and/or the receiver coils; modified circuit designs to be used on the primary and/or receiver side; and additional circuits and components that perform specialized tasks, such as mobile device or battery identification, and automatic voltage or power-setting for different devices or batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.