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:
Sep. 03, 2019
Filed:
Mar. 27, 2015
Denso Wave Incorporated, Chita-gun, Aichi-pref., JP;
Denso Corporation, Kariya, Aichi-pref., JP;
DENSO WAVE INCORPORATED, Aichi-Pref., JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a wireless power supply apparatus, a first unit electrically connected to a power supply and a second unit electrically connected to an electric load. Power transmission is performed wirelessly between the first and second units using a magnetic resonance phenomenon. Each of the units has a resonant amplifier circuit provided with switching means driven by a drive signal, a resonant coil to which a high-frequency signal generated by the resonant amplifier circuit is supplied such that the resonant coil functions as a resonant inductor on the resonant amplifier circuit, and electric storage means electrically connected to the resonant amplifier circuit so as to be capable of charging and discharging power. The second unit includes current detecting means for detecting a current flowing through the storage means, and phase control means for controlling a phase of the drive signal for the switching means based on the detected current.