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Wind-induced vibration piezoelectricity energy gathering device

A piezoelectric energy collection device technology, which is applied in the direction of wind power generation, wind engine, wind motor combination, etc., can solve problems such as being easily affected by the external environment, difficulty in miniaturization, and complicated mechanical structure, so as to improve energy collection efficiency, The effect of low cost and simple implementation structure

Inactive Publication Date: 2014-05-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The windmill-like device mentioned above has a relatively complex mechanical structure and is difficult to miniaturize, and the piezoelectric cantilever beams are exposed, which is easily affected by the external environment and reduces the service life.

Method used

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  • Wind-induced vibration piezoelectricity energy gathering device
  • Wind-induced vibration piezoelectricity energy gathering device
  • Wind-induced vibration piezoelectricity energy gathering device

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing and technical scheme, the present invention is further concretely implemented, appended figure 1 , 2 It is an embodiment of the present invention. The working principle of this wind-induced vibration piezoelectric energy harvesting device is as follows: first, the wind energy is used to drive the fan to rotate to obtain the mechanical energy of the fan, and then the piezoelectric cantilever beam is moved by the rotating fan to generate The vibration eventually causes the deformation of the piezoelectric material attached to the piezoelectric cantilever, and finally generates electricity. The energy collection efficiency can be improved by controlling the number of piezoelectric cantilever beams and the number of fan blades. exist figure 1 Among them, the collection device includes a fixed base 1 and a bracket 2 installed on the fixed base, a rotating shaft 8 with a bearing 4 is fixedly installed on the bracket 2, a fan 3 ...

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Abstract

The invention belongs to the energy gathering field based on piezoelectric materials, and relates to a wind energy conversion device, in particular to a wind-induced vibration piezoelectricity energy gathering device. The wind-induced vibration piezoelectricity energy gathering device is characterized in that a support is fixedly installed on a fixing seat, a rotation shaft with a bearing installed on is fixedly installed on the support, a fan is fixed on the rotation shaft, a housing is fixedly installed on the support, a plurality of cantilever beams are fixed inside the housing, the cantilever beams are symmetrically distributed, a piezoelectric film is pasted on the surface of each cantilever beam, each piezoelectric film is pasted from the fixing end of each cantilever beam to the free end of each cantilever beam, certain space is kept between each piezoelectric film and each of the fixing and the free end of each cantilever beam, the free end of each cantilever beam overlaps a vane of the fan, the overlap distance is M, and the deformation degree of each cantilever beam is controlled through the overlap distance M between the vane of the fan, which overlaps the cantilever beam, and the cantilever beam. The wind-induced vibration piezoelectricity energy gathering device has the advantages of being simple in structure, low in cost, and easy to achieve, and can supply power for a miniature device and a wireless sensing network.

Description

technical field [0001] The invention belongs to the field of energy collection based on piezoelectric materials, and relates to a wind energy conversion device, in particular to a wind-induced vibration piezoelectric energy collection device. Background technique [0002] In recent years, with the wide application of wireless devices, power supply issues have attracted more and more attention. Piezoelectric energy harvesting devices are a new type of power generation device, which has the advantages of simple structure, no electromagnetic interference, and easy miniaturization. In addition, more and more attention has been paid to environmental protection, and the development and utilization of new energy has become the only way. New energy, the existing wind power generation, generally adopts the form of electromagnetic coupling, the conversion efficiency is low, and the volume is large, difficult to maintain, and the cost is high. At present, there are not many cases of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18F03D9/00
CPCY02E10/72
Inventor 白凤仙管丽娟董维杰
Owner DALIAN UNIV OF TECH
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