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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.:

US 10923964 B1

PDFFull Text
Date of Patent:
Feb. 16, 2021

Filed:

Feb. 12, 2019

Power transmitter unit

Applicant:

Nxp Usa, Inc., Austin, TX (US);

Inventors:

Zbynek Mynar, Roznov pod Radhostem, CZ;

Jozef Cicka, Cadca, SK;

Vojt{hacek over (e)}ch Musil, Kuncice pod Ondrejnikem, CZ;

Assignee:

NXP USA, Inc., Austin, TX (US);

Attorney:
Primary Examiner:

Pinping Sun

Int. Cl.
CPC ...
H02J 50/60 (2016.01); H02J 50/12 (2016.01); H02J 7/02 (2016.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); H02J 50/12 (2016.02); H02J 7/025 (2013.01);
Abstract

A power-transmitter-unit includes a power-transmitting-coil for wirelessly providing power to a power-receiver-unit, and a resonant-capacitor connected to the power-transmitting-coil, such that together they define an LC circuit. The LC circuit includes a first-end and a second-end. A controller defines a foreign-object-detection-mode of operation, wherein, in the foreign-object-detection-mode of operation, the first-end of the LC circuit is connected to the second-end of the LC circuit such that the LC circuit is short-circuited and defines a closed-LC-circuit, and the controller is configured to receive a coil-current-signal that is representative of the current through the closed-LC-circuit. The controller is further configured to process the coil-current-signal that was received during the foreign-object-detection-mode of operation, in order to determine the resistance of the closed-LC-circuit, and provide an indication that a foreign object has been detected if the determined resistance of the closed-LC-circuit is greater than a resistance-threshold value.

Find Patent Forward Citations

Mynar, Zbynek. (2021). Power transmitter unit (U.S. Patent No. 10923964). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10923964

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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