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:
Aug. 11, 2026
Filed:
May. 08, 2025
Denso Corporation, Kariya-city, JP;
Masaya Takahashi, Kariya-city, JP;
Yusei Nakayashiki, Kariya-city, JP;
Mitsuru Shibanuma, Kariya-city, JP;
Hidetoshi Yamada, Kariya-city, JP;
Nobuhisa Yamaguchi, Kariya-city, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A contactless power supply system is provided with a transmission apparatus, and a reception apparatus to which the transmission apparatus supplies power in a contactless manner. The reception apparatus includes: a secondary resonant circuit, a rectifier circuit, an immittance circuit, a load, a protection switch changing the state between a conductive state and a non-conductive state, thereby causing the secondary resonant circuit to be in a non-resonant state, and a secondary side control circuit that sets the protection switch to be in the conductive state or the non-conductive state. The primary side control circuit changes the impedance of the variable impedance element, using a detection value of the primary detection circuit which changes depending on the state of the protection switch being set to be in the conductive state or the non-conductive state, thereby causing the reception apparatus to be in the standby state from the transmission state.