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Device for converting mechanical energy into electrical energy for autonomous power supply of e.g. electronic components of electric circuit of electrical device, has moving element with membrane whose side includes concave and convex areas

Vorrichtung zur Wandlung mechanischer Energie in elektrische Energie und Verfahren zu ihrer Herstellung
: Lebedev, V.

Frontpage ()

DE 102011005249 A: 20110308
Patent, Elektronische Publikation
Fraunhofer IAF ()

The device has a substrate (100) with two sides (101, 102), and a moving element arranged on the sides of the substrate and made of piezoelectric material. The moving element comprises a multilayered membrane, where a side of the membrane comprises concave area and convex area. The membrane is provided with a base layer (200) and a piezoelectric layer. The base layer and the piezoelectric layer are arranged on the sides of the substrate. The base layer comprises two sides (201, 202). Resonance frequency of the membrane is about 50 to 150 Hz. The base layer is formed as an electrical contact layer. An INDEPENDENT CLAIM is also included for a method for manufacturing a device for converting mechanical energy into electrical energy.