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A Vertical Series Arrangement Piezoelectric Energy Harvester with Increased Coupling Effect

A piezoelectric energy harvesting and piezoelectric technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve mutual interference, low energy harvesting efficiency, piezoelectric The vibration amplitude of the plate is small, and the effect of high energy utilization rate, high energy capture efficiency and flexible design is achieved.

Active Publication Date: 2020-06-09
HARBIN INST OF TECH
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a piezoelectric energy harvester arranged in vertical series with increased coupling effect to solve the problem of mutual interference due to phase changes in the traditional parallel series arrangement and the traditional piezoelectric sheet The problem of small vibration amplitude and low energy capture efficiency

Method used

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  • A Vertical Series Arrangement Piezoelectric Energy Harvester with Increased Coupling Effect
  • A Vertical Series Arrangement Piezoelectric Energy Harvester with Increased Coupling Effect
  • A Vertical Series Arrangement Piezoelectric Energy Harvester with Increased Coupling Effect

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Embodiment Construction

[0028] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Such as Figure 1 to Figure 9 As shown, a piezoelectric energy harvester arranged in vertical series with increased coupling in the present invention includes a fixed support base 1, a horizontal piezoelectric cantilever beam 2, a horizontal spoiler column 3, and a vertical piezoelectric cantilever beam 4 and vertical spoiler 5;

[0030] One end of the horizontal piezoelectric cantilever 2 is connected to the top of the fixed support base 1 through the horizontal clamp group 6, the other end of the horizontal piezoelectric cantilever 2 is connected to the horizontal spoiler column 3, and one end of the vertical piezoelectric cantilever 4 passes through The vertical clamp group 7 is connected with the horizontal spoiler column 3 , and the other end of the vertical piezoelectric cantilever beam 4 is connected with the vertical spoiler col...

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Abstract

The invention relates to a vertical series connection arrangement type piezoelectric energy harvester for improving a coupling effect, belongs to the technical field of water flow and air flow inducedvibration energy harvesting, and aims to solve the problems of mutual interference due to phase changes during vibration of vibrators, small vibration amplitude of traditional piezoelectric plates and low energy harvesting efficiency in a traditional parallel / series connection arrangement mode. One end of a horizontal piezoelectric cantilever beam is connected with the top end of a fixed supportbase through a horizontal clamp set, and the other end of the horizontal piezoelectric cantilever beam is connected with a horizontal turbulent column; and one end of a vertical piezoelectric cantilever beam is connected with the horizontal turbulent column through a vertical clamp set, and the other end of the vertical piezoelectric cantilever beam is connected with a vertical turbulent column. According to the vertical series connection arrangement type piezoelectric energy harvester for improving the coupling effect, the vibrators of the piezoelectric energy harvester are in a vertical series connection arrangement mode, and motion states of the vibrators do not interfere mutually, so that the energy harvesting efficiency is improved; and the piezoelectric energy harvester has the advantages of simple excitation mode, high energy harvesting efficiency, novel structure, flexible design and serialized production.

Description

technical field [0001] The invention relates to a piezoelectric energy harvester, in particular to a vertically serially arranged piezoelectric energy harvester with increased coupling effect, and belongs to the technical field of vibration energy harvesting caused by water flow and air flow. Background technique [0002] Flow-induced vibration energy capture is a technology that uses the vortex induced force generated by the alternately shedding vortices to excite the vibration of the energy-harvesting vibrator when the water flow or air flow passes through the non-streamlined object, thereby generating electric energy. [0003] The flow-induced vibration energy harvesting in the prior art is mostly a double energy harvester or a cross-type energy harvester in which piezoelectric sheets are arranged in parallel and in series, and the energy harvesting efficiency is low due to the limitation of the arrangement. Double energy harvesters with piezoelectric sheets arranged in p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
Inventor 单小彪王艺聪谢涛
Owner HARBIN INST OF TECH
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