公开(公告)号：US11245345B2

公开(公告)日：2022-02-08

申请号：US16296218

申请日：2019-03-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun-Cheol Song ,  Chong Yun Kang ,  Jin Sang Kim ,  Ji-won Choi ,  Seung Hyub Baek ,  Seong Keun Kim ,  Sang Tae Kim ,  Youn-hwan Shin

IPC: H02N2/18 ,  H01L41/04 ,  H01L41/113 ,  H01L41/053

Abstract: Provided is a self-resonance tuning piezoelectric energy harvester. The self-resonance tuning piezoelectric energy harvester includes a piezoelectric beam which extends along a horizontal direction, a fixing element which fixes two ends of the piezoelectric beam, and a mass which is connected to the piezoelectric beam movably along the piezoelectric beam, wherein the mass includes a through-hole through which the piezoelectric beam passes, and makes the movement through the through-hole. According to the principle of continuous movement to the resonance position, the mass of the self-resonance tuning piezoelectric energy harvester induces the piezoelectric beam to generate displacement to the maximum and maximize the electricity production capacity of the piezoelectric energy harvester.