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:
Feb. 04, 2025
Filed:
Dec. 15, 2021
Koninklijke Philips N.v., Eindhoven, NL;
Johannes Wilhelmus Draak, Horst, NL;
Wilhelmus Gerardus Maria Ettes, Leeuwarden, NL;
Klaas Jakob Lulofs, Veldhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A power transmitter () comprises a driver () generating a drive signal for an output resonance circuit comprising transmitter coil () generating a power transfer signal. A resonance detector () determines a coupled resonance frequency for the output resonance circuit during where the coupled resonance frequency is a resonance frequency for the output resonance circuit for the transmitter coil () being coupled to a receiver coil () which is part of a power transfer input resonance circuit of the power receiver (). The input resonance circuit has a quality factor of no less than ten. An estimation circuit () determines a coupling factor estimate for the coupling between the transmitter coil () and the receiver coil () in response to a non-coupled resonance frequency of the output resonance circuit and the first effective resonance frequency. An adapter () sets an operating parameter in response to the coupling factor estimate.