Photonic crystal power generating device based on lateral vibration band gap

A phononic crystal and power generation device technology, applied in the field of piezoelectric vibration power generation devices, can solve the problems of complicated cantilever beam design and high production cost, and achieve the effects of improving power generation efficiency, large power generation amount, and low design and manufacturing cost

Inactive Publication Date: 2014-04-23
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this structure is to arrange different cantilever beams on the same substrate, the design of the cantilever beam is complicated, and the production cost is high

Method used

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  • Photonic crystal power generating device based on lateral vibration band gap
  • Photonic crystal power generating device based on lateral vibration band gap
  • Photonic crystal power generating device based on lateral vibration band gap

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Embodiment Construction

[0020] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0021] combine figure 1 , The technical solution of the present invention mainly includes a main beam 1, a piezoelectric material 2, a quality block 3 and a support beam 4.

[0022] The main beam 1 is used to connect with the machine base in the vibration environment or directly as the machine base, and the material is silicon, metal or elastic material, etc.; the material of the piezoelectric material 2 is piezoelectric ceramics or piezoelectric film; the material of the mass block 3 is copper , nickel and other metals; the material of the beam 4 is silicon. The piezoelectric material 2 and the mass block 3 are bonded to the support beam 4 by bonding and other reasonable processes to form a local vibrator. The local vibrator is installed on the main beam 1 symmetrically and equidistantly as a unit by welding, embedded connection, etc. , thus for...

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Abstract

The invention provides a photonic crystal power generating device based on a lateral vibration band gap. The photonic crystal power generating device comprises a main beam and branched beams, wherein the branched beams are connected with piezoelectric materials and mass blocks for forming local-area vibrator units, and a plurality of local-area vibrator units with the same structure are symmetrically arranged on the main beam at equal intervals for forming a photonic crystal structure. Energy conversion is carried out by using a piezoelectric technology, and wideband efficient power generation of the power generating device in a vibrating environment is realized by adopting a photonic crystal technology. The photonic crystal power generating device is simple in integral structure and convenient to manufacture, and has lower requirement on the working environment. The lateral vibration power generation frequency band of a piezoelectric vibrating device is effectively widened, and active control is not needed. The photonic crystal power generating device can be used for energy supply of micro-electronics products, such as a wireless sensor.

Description

technical field [0001] The present invention relates to a power generating device, in particular to a piezoelectric vibration power generating device suitable for generating power by utilizing the lateral vibration band gap of a phononic crystal in a vibration and noise environment. Background technique [0002] In recent years, with the development of integrated circuit technology and micro / nano electromechanical system technology, microelectronic products are widely used in wireless network nodes, environmental monitoring, automobiles, buildings and other important fields. At present, the development of microelectronic products is limited by the miniaturization and lifespan of energy supply devices, so it is very important to develop new micro power supply technology. At present, most of the chemical power supply schemes used in micro-electromechanical systems are only suitable for short life cycles, and it is difficult to cope with the increasing number of wireless networ...

Claims

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Application Information

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IPC IPC(8): H02N2/18
Inventor 舒海生董立强刘少刚赵丹李世丹林航刘伟王兴国李晓刚梁善军
Owner HARBIN ENG UNIV
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