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Differential pressure piezoelectric generating device

A piezoelectric power generation and pressure difference technology, which is applied in the direction of ocean energy power generation, generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problems of complex structure and low extraction efficiency, Achieve the effect of simple power generation mechanism and simple structure

Active Publication Date: 2018-09-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical defects of low extraction efficiency and complicated structure in the wave energy generating device provided by the prior art, and provide a differential pressure piezoelectric generating device

Method used

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  • Differential pressure piezoelectric generating device
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Embodiment 1

[0028] Such as figure 1 , 2 As shown in , 3 , the piezoelectric generator provided by the present invention includes a disturbance body 1 , a piezoelectric sheet 2 , a bracket 3 and a limiting sheet 4 .

[0029] The disturbance body 1 is columnar, and its left side and right side are arc-shaped curved surfaces that are symmetrical with the central axis as the axis of symmetry, and the arcs of the left side and right side gradually increase from one end to the other end. A cavity is opened in the disturbance body 1 for accommodating circuit components such as energy harvesting circuits and wireless sensor modules, so that the piezoelectric power generation device can be used for energy harvesting or wireless sensor network arrangement. In this embodiment, the disturbance body 1 is made of corrosion-resistant, tough, lightweight materials that do not affect the transmission of electromagnetic waves. The piezoelectric sheet 2 is strip-shaped, and it is made up of an elastic sub...

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Abstract

The invention relates to a differential pressure piezoelectric generating device, comprising a disturbing body and a piezoelectric piece, wherein a side surface of the disturbing body is an arc-shapedside surface whose radian is gradually increased from one end to the other end; the piezoelectric piece is arranged on the arc-shaped side surface of the disturbing body; a space is arranged betweenthe piezoelectric piece and the disturbing body; and the piezoelectric piece is opposite to the arc-shaped side of the disturbing body. The piezoelectric generating device provided by the invention issimple in structure, and is simple in power generation principle, and drives the piezoelectric piece to generate bending vibration by using a variable pressure difference of seawater on both sides ofthe piezoelectric piece, so that the piezoelectric piece generates charges in the thickness direction so as to realize piezoelectric power generation.

Description

technical field [0001] The present invention relates to the field of ocean wave energy power generation, and more specifically, to a differential pressure piezoelectric power generation device. Background technique [0002] Ocean wave energy is an inexhaustible clean energy source. Human beings have been trying to efficiently use ocean wave energy, which can be traced back to a patent on the use of wave energy filed by Girard and his son in 1799. After the oil crisis, more and more researchers devoted themselves to the study of ocean wave energy. In 1983, Stephen Hugh Salter of the University of Edinburgh invented a device called Salter's Duck, which can convert 90% of The forwarding of wave energy into electric energy shows the broad application prospect of wave energy to the world. [0003] With the development of science and technology, scholars have proposed various types of ocean wave power generation devices, mainly including oscillating water column type, floating p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18F03B13/14
CPCF03B13/14H02N2/185H02N2/186Y02E10/30
Inventor 黄以华黄文津
Owner SUN YAT SEN UNIV
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