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:
Oct. 18, 2016
Filed:
Apr. 16, 2015
Nxp B.v., Eindhoven, NL;
Aliaksei Vladimirovich Sedzin, Eindhoven, NL;
Klaas Brink, Waalre, NL;
Rene Geraets, Eindhoven, NL;
Patrick Niessen, Eindhoven, NL;
Oswald Moonen, Eindhoven, NL;
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Abstract
A method for performing foreign object detection in an inductive wireless power transfer system is disclosed. In the embodiment, the method involves obtaining measurements from a base station of a wireless power transfer system during charging and determining transmitter energy loss in a power transmitter, P, using the obtained measurements, wherein the transmitter energy loss, P, is a function of at least Vand P, wherein Vis proportional to the voltage amplitude across the capacitor of an LC tank circuit in a power transmitter and Pis the total power supplied to the power transmitter. The method also involves detecting the presence of a foreign object in response to the estimated transmitter energy loss.