The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
Jul. 27, 2015
Witricity Corporation, Watertown, MA (US);
Felix Weidner, Munich, DE;
Martin Pavlovsky, Munich, DE;
WiTricity Corporation, Watertown, MA (US);
Abstract
Systems, methods and apparatuses implementing hybrid symmetric and asymmetric control for soft switching in wireless power transfer applications are provided. An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a wireless power coupler. The apparatus comprises driver circuit. The apparatus comprises a control unit configured to instruct a driver circuit to drive the wireless power coupler with a first voltage waveform when transferring wireless charging power less than a first amount. The first voltage waveform includes a positive portion having a first duration and a negative portion having the first. The control unit is further configured to selectively instruct the driver circuit to drive the wireless power coupler with a second voltage waveform when transferring wireless charging power greater than the first amount, the second voltage waveform including a positive portion having a second duration and a negative portion having a third duration that is not equal to the second duration.