Broadband energy harvesting apparatus using a multi degree-of-freedom vibrating body

Mass body 10 to be installed, the vibration degrees of freedom based broadband energy harvesting device 100 according to the present invention, in response to the external vibration degrees of freedom to oscillate; And in response to the vibration of the mass body 10, the mass 10 is provided so that the piezoelectric vibration with a (41, 42); Including, characterized in that harvested electricity generated in the piezoelectric member (41, 42). According to the present invention is that the resonance frequency of the external vibration widened because it appears in multiple locations adjacent to its natural frequency by the mass 10, the vibration degrees of freedom. Therefore, it is possible to obtain an efficient electricity in a wide frequency range.