Power generating element
US11088637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2018 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/88
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion (120) and a second plate-like bridge portion (130) extend in a shape of a letter U from a fixing-portion (110) fixed to the device housing (200) and a weight body (150) is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E00), a layered piezoelectric element (300) and discrete upper layer electrodes (Ex1 to Ez4) are formed. The upper layer electrodes (Ez1 to Ez4) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the Z-axis direction vibration of the weight body (150). The upper layer electrodes (Ex1 to Ex4, Ey1 to Ey4) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the X-axis or Y-axis direction vibration of the weight body (150).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.