US 11,689,089 B2
Wireless power transfer via electrodynamic coupling
David Patrick Arnold, Gainesville, FL (US); Shuo Cheng, Gainesville, FL (US); and Vinod Reddy Challa, Gainesville, FL (US)
Assigned to University of Florida Research Foundation, Inc., Gainesville, FL (US)
Filed by University of Florida Research Foundation, Inc., Gainesville, FL (US)
Filed on Apr. 13, 2022, as Appl. No. 17/719,472.
Application 17/719,472 is a continuation of application No. 16/735,437, filed on Jan. 6, 2020, granted, now 11,309,736.
Application 16/735,437 is a continuation of application No. 15/432,505, filed on Feb. 14, 2017, granted, now 10,541,558, issued on Jan. 21, 2020.
Application 15/432,505 is a continuation of application No. 13/989,293, granted, now 9,866,066, issued on Jan. 9, 2020, previously published as PCT/US2011/046748, filed on Aug. 5, 2011.
Claims priority of provisional application 61/417,059, filed on Nov. 24, 2010.
Prior Publication US 2022/0247213 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 35/02 (2006.01); H02J 50/10 (2016.01); H02J 50/50 (2016.01); H02K 99/00 (2014.01); H02N 1/08 (2006.01); H02J 50/00 (2016.01); H02J 50/70 (2016.01); H02J 50/90 (2016.01); H02J 50/12 (2016.01)
CPC H02K 35/02 (2013.01) [H02J 50/00 (2016.02); H02J 50/001 (2020.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H02J 50/50 (2016.02); H02J 50/70 (2016.02); H02J 50/90 (2016.02); H02K 99/10 (2016.11); H02N 1/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A wireless power transfer system, comprising:
a transmitter generating a time-varying external magnetic field; and
a receiver generating electrical power under an influence of the time-varying external magnetic field, the receiver comprising:
an electromechanical conversion element having a first axis extending from a fixed proximal end to a free distal end, the electromechanical conversion element comprising a piezoelectric material extending along at least a portion of the first axis, and
a magnet attached to the electromechanical conversion element at the free distal end, where the piezoelectric material generates a voltage in response to a torque exerted on the electromechanical conversion element by a rotation of the magnet about a second axis perpendicular to the first axis via electrodynamic coupling with the time-varying external magnetic field, wherein a movement of the electromechanical conversion element produced by the torque generates the voltage of the piezoelectric material.