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. 24, 2020
Filed:
Nov. 06, 2017
Rohm Co., Ltd., Kyoto, JP;
Yoshihiro Ikefuji, Kyoto, JP;
Junya Sato, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A non-contact power supply system includes a power transmission device including a first resonance circuit having a first coil for transmitting electric power; and a power reception device including a second resonance circuit having a second coil for receiving the electric power. The system is configured to transmit and receive the electric power by a magnetic field resonance method, and to communicate between the power transmission device and the power reception device. The power transmission device includes a power transmission circuit for supplying an AC voltage to the first resonance circuit; a detection circuit configured to detect an amplitude of a current flowing through the first coil; and a control circuit configured to control the power transmission circuit to perform power transmission control of the electric power.