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:
Dec. 24, 2019
Filed:
Mar. 23, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Mami Tsutsui, Shiga, JP;
Hiroyasu Kitamura, Shiga, JP;
Norihiro Iwamura, Shiga, JP;
Seiichi Iwao, Shiga, JP;
Abstract
A noncontact power supply device includes a power transmission device, a magnetism collecting device, and a power reception device. The power transmission device includes switching elements that make a power-transmission resonant circuit generate an alternating magnetic flux from a power source circuit. The power reception device includes a magnetism collecting device having a magnetism collecting circuit not connected to a load, a power receiving coil which is capable of being magnetically coupled to the magnetism collecting device, and a rectifier circuit that supplies output power of the power receiving coil to a load. A power-transmission resonance frequency of the power-transmission resonant circuit is smaller than a drive frequency of each of switching elements, and a power-reception resonance frequency of the magnetism collecting circuit is larger than the drive frequency of each of switching elements. Accordingly, the present invention provides a noncontact power supply device with high power transmission efficiency and with excellent productivity.