PIEZOELECTRIC ELEMENTS MODULE AND CHARGING DEVICE USING THE SAME

摘要

A piezoelectric element module according to the present invention comprises an airtight piezoelectric element generating electromotive force by impact pressure and an excitation member provided within the piezoelectric element and excites within the piezoelectric element by external force applied from the outside to exert on impact pressure on the piezoelectric element, wherein the excitation member presses the piezoelectric element by the external force to generate electricity.