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:
Mar. 02, 2021
Filed:
Jul. 21, 2020
Omron Corporation, Kyoto, JP;
Takanori Imazawa, Ichinomiya, JP;
Goro Nakao, Inazawa, JP;
OMRON CORPORATION, Kyoto, JP;
Abstract
A contactless power supply device includes a power transmitter, and a power receiver. The power receiver includes: a resonant circuit including a receiver coil and a resonant capacitor; a rectifier circuit configured to rectify the power output from the resonant circuit; a voltage detection circuit configured to measure the output voltage from the rectifier circuit and obtain a measurement value for said output voltage; and a first communication device. The power transmitter includes: a transmitter coil; a power supply circuit including a power source and a plurality of switching elements between the power source and the transmitter coil; an auxiliary coil for electromagnetic coupling with the transmitter coil; a variable capacitance circuit configured to connect to the auxiliary coil and adjust the electrostatic charge therein; and a control circuit configured to control the electrostatic charge in the variable capacitance circuit in accordance with the measurement value for the output voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile