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:
Oct. 15, 2019
Filed:
Jan. 10, 2018
Denso Wave Incorporated, Chita-gun, Aichi-pref., JP;
Shigeru Takeda, Chita-gun, JP;
Masayoshi Sugino, Nishio, JP;
Takaomi Suzuki, Nishio, JP;
Tatsuya Masamura, Kariya, JP;
DENSO WAVE INCORPORATED, Aichi-Pref.,, JP;
Abstract
A power transmission unit of a wireless power feeding device supplies power to two or more moving bodies wirelessly by using magnetic field resonance. The power transmission unit includes a power transmission coil, a high frequency generation unit, capacitor circuit groups, and a control unit. The capacitor circuit groups have series capacitors connected in series with the power transmission coil and parallel capacitors connected in parallel to the switching elements for generating a high frequency, and the capacitor circuit groups are set together with the power transmission coil so as to have different impedances to each other. The control unit that controls a switch for connecting and disconnecting the capacitor circuit groups according to the number of the moving bodies to which electrical power is supplied from the power transmission coil.