Hybrid piezoelectric energy harvesting transducer system
US7446459B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Dec 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid piezoelectric energy harvesting transducer system includes: (a) first and second symmetric, pre-curved piezoelectric elements mounted separately on a frame so that their concave major surfaces are positioned opposite to each other; and (b) a linear piezoelectric element mounted separately on the frame and positioned between the pre-curved piezoelectric elements. The pre-curved piezoelectric elements and the linear piezoelectric element are spaced from one another and communicate with energy harvesting circuitry having contact points on the frame. The hybrid piezoelectric energy harvesting transducer system has a higher electromechanical energy conversion efficiency than any known piezoelectric transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.