公开(公告)号：US20230403937A1

公开(公告)日：2023-12-14

申请号：US18333569

申请日：2023-06-13

申请人： Zhejiang Gongshang University

发明人： Guangqing Wang ,  Zhoulong Liu

IPC分类号： H10N30/30 ,  H02N2/18 ,  H02N2/00 ,  H10N30/853 ,  H10N30/88 ,  H10N30/03

CPC分类号： H10N30/306 ,  H02N2/186 ,  H02N2/22 ,  H10N30/853 ,  H10N30/886 ,  H10N30/03

摘要： A piezoelectric vibration energy harvester includes: a first support plate, a second support plate, a piezoelectric bimorph cantilever, a rolling part, a printing raceway, a preloading spring and a bottom plate, the first and second support plates are vertically disposed on the bottom plate, two ends of the piezoelectric bimorph cantilever are respectively connected with the first support plate and the rolling part, an end of the preloading spring is fixed on the second support plate, another end of the preloading spring is movably connected with a back surface of the printing raceway, and a surface opposite to the back surface of the printing raceway is in contact with and coupled with the rolling part. The printing raceway can be obtained by programming the number and initial positions of static equilibrium points, and a multi-stable piezoelectric energy harvester with symmetric or asymmetric potential energy well can be realized.