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:
May. 06, 2014
Filed:
May. 14, 2010
Toshihiro Kai, Yamato, JP;
Kraisorn Throngnumchai, Yokohama, JP;
Yusuke Minagawa, Yokosuka, JP;
Yasuaki Hayami, Yokosuka, JP;
Kengo Maikawa, Kawasaki, JP;
Toshihiro Kai, Yamato, JP;
Kraisorn Throngnumchai, Yokohama, JP;
Yusuke Minagawa, Yokosuka, JP;
Yasuaki Hayami, Yokosuka, JP;
Kengo Maikawa, Kawasaki, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A contactless electricity-supplying device () includes a secondary winding () to which electric power is supplied from a primary winding (), by an AC power supply (). The impedance characteristic (Z) of Zin regard to the frequency has a local maximum (Z) near the frequency (f) of the fundamental wave component of aforementioned AC power supply (); and the impedance characteristic (Z) of Zin regard to the frequency has the aforementioned frequency (f) of the fundamental wave component to be between, a frequency (f) that has its local maximum (Z) nearest to aforementioned frequency (f) of the fundamental wave component, and a frequency (f) that has its local minimum (Z) nearest to the frequency (f) of the fundamental wave component. Zindicates that the coupling coefficient (k) between aforementioned primary winding () and aforementioned secondary winding () is a prescribed value (0.3), and that it is an impedance of just the primary side (Z) as seen from the output side of aforementioned AC power supply (); and Zindicates that the coupling coefficient (k) between aforementioned primary winding () and aforementioned secondary winding () is the aforementioned prescribed value (0.3), and that it is an impedance of just the secondary side (Z) as seen from the side of a load () to be connected to aforementioned secondary winding ().