US 12,341,444 B2
Vibration power generation device
Yuncheng He, Guangdong (CN); Huajian Mao, Guangdong (CN); Jiyang Fu, Guangdong (CN); Jiurong Wu, Guangdong (CN); Haibo Lin, Guangdong (CN); and Zhi Li, Guangdong (CN)
Assigned to Guangzhou University, Guangzhou (CN)
Filed by Guangzhou University, Guangdong (CN)
Filed on Dec. 31, 2021, as Appl. No. 17/567,070.
Application 17/567,070 is a continuation of application No. PCT/CN2020/116436, filed on Sep. 21, 2020.
Claims priority of application No. 202010020058.8 (CN), filed on Jan. 8, 2020.
Prior Publication US 2022/0123671 A1, Apr. 21, 2022
Int. Cl. H02N 2/18 (2006.01); H02K 35/02 (2006.01)
CPC H02N 2/186 (2013.01) [H02K 35/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A vibration power generation device, comprising: three power generation mechanisms with energy harvesting directions the same as three directions of three-dimensional coordinates, each of the power generation mechanisms comprising a piezoelectric power generation part and a magnetoelectric power generation part,
wherein the piezoelectric power generation part comprises two M-shaped structural beams and two first permanent magnets fixed in the middle of the two M-shaped structural beams respectively;
wherein the magnetoelectric power generation part comprises two magnetoelectric power generation components that are arranged on both sides of the piezoelectric power generation part and are in the same axial direction as the two first permanent magnets, and each of the magnetoelectric power generation components comprises a second permanent magnet, a sleeve that houses the second permanent magnet in a cavity, and a coil wound on a surface of the sleeve; and
wherein the three power generation mechanisms comprises an X-direction power generation mechanism, a Y-direction power generation mechanism, and a Z-direction power generation mechanism, and each of the magnetoelectric power generation components of the X-direction power generation mechanism and the Y-direction power generation mechanism further comprises a spring with one end connected to the second permanent magnet.