Piezoelectric power generation device and piezoelectric ceramics member used therefor
US7078850B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jul 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a piezoelectric power generation device and a piezoelectric ceramics member used in the device excellent in its power generation efficiency in which the polarization of piezoelectric ceramics elements is set to the same direction and an extremely thin metallic electrode is sandwiched in between the piezoelectric ceramics elements so that a current output obtained in the piezoelectric power generation device can be improved substantially to about two times as high as a current output obtained by a usual piezoelectric power generation device and the parasitic resonance of the electrode can be prevented, the piezoelectric power generation device generates power by applying a distortion deformation to piezoelectric ceramics members formed in plate shapes. The piezoelectric power generation device includes the piezoelectric ceramics members each having the two plate shaped piezoelectric ceramics elements whose polarization is set to the same direction and the extremely thin metallic electrode interposed between the piezoelectric ceramics elements, the piezoelectric ceramics member being formed in a laminar shape by uniting the piezoelectric ceramics elements through the metallic elec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.