Vibration-driven energy harvesting element and vibration-driven energy harvesting device

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United States of America Patent

PATENT NO 11716033
APP PUB NO 20210234478A1
SERIAL NO

17053598

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Abstract

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A vibration-driven energy harvesting element that outputs an alternating current power from an output line, due to vibration from outside includes: an intermediate electrode that is not connected to the output line; a plurality of electret electrodes, each electret electrode being arranged to face the intermediate electrode and having an electret on at least a part of a surface of the electret electrode on a side facing the intermediate electrode; a holding unit that holds the intermediate electrode and the plurality of electret electrodes such that the intermediate electrode and the plurality of electret electrodes can vibrate with respect to each other; and a charge injector that injects a charge having characteristics opposite to a charge of the electrets formed in the surfaces of the plurality of electret electrodes, to the intermediate electrode.

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Patent Owner(s)

Patent OwnerAddress
THE UNIVERSITY OF TOKYO3-1 HONGO 7-CHOME BUNKYO-KU TOKYO 113-8654
SAGINOMIYA SEISAKUSHO INCJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ashizawa, Hisayuki Sayama, JP 23 42
Morita, Masahiro Sayama, JP 114 1326
Toshiyoshi, Hiroshi Tokyo, JP 29 169

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