Vibration-based energy harvester with strain optimised topology
US10826414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2016 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/878
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus is provided for harvesting energy from mechanical vibrations with an improved power output. The apparatus comprises a frame (22), a first member (20) comprising a piezoelectric material, a cantilever beam (26) and an electrode. The first member is fixed to the frame at a first position and a second position and extends between the first and second positions. The cantilever beam has a first end fixed to the first member between the first position and the second position and a second end fixed to a proof mass (24). The electrode is fixed to the first member at a position between the first position and the second position. In another aspect, the apparatus may comprise a plurality of proof masses connected to the first member between the first and second positions in a spaced relationship to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.