PIEZOELECTRIC ELECTRICITY GENERATING ELEMENT, PIEZOELECTRIC ELECTRICITY GENERATING DEVICE AND PRODUCTION METHOD FOR PIEZOELECTRIC ELECTRICITY GENERATING ELEMENT

摘要

Disclosed are a small-sized and highly durably piezoelectric electricity generating element which is capable of generating electricity at a high electricity generation rate even by means of low frequency vibrations, a piezoelectric electricity generating device which is provided with the piezoelectric electricity generating element, and a production method for the piezoelectric electricity generating element. A piezoelectric electricity generating element (2) comprises a spiral shaped piezoelectric body (20), and first and second electrodes (21, 22). The spiral shaped piezoelectric body (20) comprises a first end section (20A) which is fixed to a first member (3), and a second end section (20B) which is fixed to a second member (4). The first and the second electrodes (21, 22) are formed along the direction in which the spiral shaped piezoelectric body (20) extends.