Piezoelectric and electromagnetic combined power generation device for capturing wave energy

Abstract

The invention discloses a piezoelectric and electromagnetic composite power generation device for capturing wave energy. The piezoelectric and electromagnetic composite power generation device comprises a floater, a swing rod, a power generation box and a support, the swing rod extends out of the power generation box, the extending end of the swing rod is hinged with the floater, and the power generation box is supported by the support; the power generation box comprises a box body, and at least two coil power generation assemblies are arranged on the inner wall of the bottom of the half box body in the circumferential direction; the center shaft is sleeved with a rotating disc and two vibration piece discs symmetrically arranged along the rotating disc, and the vibration piece discs are provided with at least two piezoelectric power generation assemblies in the circumferential direction; and at least two magnets penetrating through the rotating disc are arranged on the rotating disc in the circumferential direction. The external environment transmits low-frequency vibration to the power generation box through a rocking bar, and the power generation box uses a plurality of piezoelectric power generation assemblies on the vibration piece disc to be matched with a plurality of groups of magnets on the rotating disc and a plurality of coil power generation assemblies on the box body, so that high-frequency vibration power generation of the piezoelectric power generation assemblies and electromagnetic induction power generation of the coil power generation assemblies are realized, and the power generation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of power generation devices, in particular to a piezoelectric and electromagnetic composite power generation device for capturing wave energy. Background technique [0002] In order to realize the self-power supply of wireless sensors used for marine environment monitoring, many scholars at home and abroad have proposed a method to convert wave energy into electrical energy by using the law of electromagnetic induction, piezoelectric effect and triboelectric effect, so as to supply power to wireless sensors, and have designed many methods. A variety of small power generation devices. Most of these devices adopt a resonant mechanical structure. Taking the electromagnetic power generation device as an example, the magnet vibrates back and forth under the drive of waves, cutting the magnetic induction line to generate an induced electromotive force in the coil. This kind of resonant power generation device reaches the m...

AI Technical Summary

Problems solved by technology

However, the increase in the volume of the power generation device will greatly reduce its output power density (the ratio of output power to its working volume), and will also bring about a series of problems such as increased manufacturing costs and increased installation difficulty.

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