Wireless power transfer magnetic couplers
US9240270B2 · kind B2 · utility
7Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2012 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Jan 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/255
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic coupler is disclosed for wireless power transfer systems. A ferrimagnetic component is capable of guiding a magnetic field. A wire coil is wrapped around at least a portion of the ferrimagnetic component. A screen is capable of blocking leakage magnetic fields. The screen may be positioned to cover at least one side of the ferrimagnetic component and the coil. A distance across the screen may be at least six times an air gap distance between the ferrimagnetic component and a receiving magnetic coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.