Four-sided-synchronous-swing dual-mode broadband power generation device

Abstract

A four-sided-synchronous-swing dual-mode broadband power generation device, comprising a fixing frame, a piezoelectric beam swing mechanism, and electromagnetic induction power generators (). Four groups of straight piezoelectric beams () and L-shaped piezoelectric beams () are installed in a small space, therefore, a limited working space can be fully utilized, the working area can be reduced, and the requirements for development of a microelectromechanical system can be satisfied. Each L-shaped piezoelectric beam () comprises a horizontal beam and a vertical beam, so that vibration in two directions can be implemented, therefore, the dynamic behavior of piezoelectric cantilevers is enriched, and the power generation efficiency of the system is improved. The straight piezoelectric beams () and L-shaped piezoelectric beams () have different lengths, so that energy of different swing frequencies can be effectively harvested, and the effective working frequency bandwidth can be broadened. The adjacent straight piezoelectric beams (), L-shaped piezoelectric beams (), and electromagnetic induction power generators () constitute four groups of dual-mode piezoelectric electromagnetic composite power generation structures, effectively improving power generation. The four-sided-synchronous-swing dual-mode broadband power generation device can harvest energy inputted in the form of rotation from environment and currently can be applied to wind power generation, hydroelectric power generation, bicycle self-power supply, and other fields.