Self-resonance tuning piezoelectric energy harvester with broadband operation frequency
US11245345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/88
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.