Piezoelectric element and friction power generation integrated device

Abstract

To provide a piezoelectric element comprising a friction power generation device which facilitates assembly / disassembly of a piezoelectric film and a charging film molded by alternately laminating a plurality of layers of piezoelectric materials of thermally curable plastic and thermoplastic elastomer having rubber elasticity in order of improve power generation efficiency, and a friction power generation integrated device.SOLUTION: A piezoelectric element and a friction power generation integrated device include bent type piezoelectric element devices 2 and 3 in which a plurality of layers of films providing electrodes in thermally curable plastic that is a piezoelectric material is laminated while holding the films between films of thermoplastic elastomer having repulsive elasticity as characteristics and, since most of electromotive forces of the piezoelectric element depends on weighting from an upper side, the plastic piezoelectric element is formed in a bent / semispherical shape in order to improve power generation efficiency, thereby improving power generation efficiency depending on elasticity. Friction power generation device substances 4 and 5 in which power generation is performed similarly by weighting from the upper side are disposed in lower parts.SELECTED DRAWING: Figure 1

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