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Wireless power transfer magnetic couplers

United States Patent

January 19, 2016
View the Complete Patent at the US Patent & Trademark Office
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.
Wu; Hunter (Logan, UT), Gilchrist; Aaron (Logan, UT), Sealy; Kylee (Logan, UT)
Utah State University (North Logan, UT)
13/ 648,201
October 9, 2012
GOVERNMENT SPONSORED RESEARCH This invention was made, at least in part, with government support under contract DE-EE0003114 awarded by the Department of Energy. The government has certain rights in the invention