Detection apparatus, electric power receiving apparatus, electric power transmission apparatus, wireless electric power transmission system, and detection method

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United States of America

PATENT NO 11990771
APP PUB NO 20170222489A1
SERIAL NO

15487834

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Abstract

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A method for wireless power transmission includes obtaining, via a Q-value circuit, first and second voltages at respective first and second nodes of a resonance circuit. The first and second voltages are effective to determine if foreign matter is present in a space affecting wireless power transmission. The method includes controlling a switching section between the Q-value circuit and the resonance circuit such that at least a part of the electric power transmission process occurs at a different time than when the first and second voltages are obtained.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujimaki, Kenichi Kanagawa, JP 29 636
Fukuda, Shinichi Kanagawa, JP 84 1002
Hashiguchi, Takaaki Tokyo, JP 24 717
Nakano, Hiroaki Tokyo, JP 168 4429

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