Piezoelectric energy harvesting device

A piezoelectric energy capture, piezoelectric film technology, applied in electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problem of low energy, increase processing and control circuit complexity degree and cost, to achieve the effect of reducing cost and difficulty, increasing cost and difficulty, and improving piezoelectric energy harvesting efficiency

Inactive Publication Date: 2013-05-22
SUZHOU VOCATIONAL UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the single cantilever piezoelectric vibrator can capture less energy
In the existing multi-cantilever piezoelectric vibrator, each cantilever performs energy capture

Method used

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Examples

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[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be more clearly defined.

[0017] See Figure 1 to Figure 4 , The embodiment of the present invention includes:

[0018] A piezoelectric energy trapping device includes an outer ring (1) and an inner cylinder (2) coaxial with the outer ring (1). The height of the inner cylinder (2) is smaller than the height of the outer ring (1). There are multiple outer ring grooves on the inner wall of the outer ring (1), inner ring grooves are provided on the outer wall of the inner cylinder (2) corresponding to the outer ring grooves, and both ends of the piezoelectric energy trapping vibrator (3) are respectively inserted into the outer ring grooves Inner and inner ring groove.

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Abstract

The invention discloses a piezoelectric energy harvesting device. The piezoelectric energy harvesting device is composed of an outer ring, an inner cylinder and a plurality of cantilever beam type piezoelectric energy harvesting vibrators, grooves are regularly axially and radially reserved on the outer ring and the inner cylinder, and the piezoelectric energy harvesting vibrators can be jointed with the outer ring and the inner cylinder via the grooves. The inner cylinder is shorter than the outer ring, and the upper end face and the lower end face of the inner cylinder after being mounted are arranged in the outer ring. When the inner cylinder is applied with external force, the piezoelectric energy harvesting vibrators are driven to vibrate simultaneously to amplify frequency of a vibration source. According to above structure, low-frequency vibration in an environment can be converted into high-frequency vibration and then converted into electric energy. The piezoelectric energy harvesting device is simple in structure and high in energy harvesting efficiency.

Description

technical field [0001] The invention relates to the field of piezoelectric energy harvesting, in particular to a piezoelectric energy harvesting device. Background technique [0002] With the intensification of global warming and the shortage of non-renewable resources such as oil, coal and natural gas, people are paying more and more attention to new, sustainable and clean renewable energy. Capturing environmental energy has become a widely used method to develop new energy sources. At present, the capture of environmental energy is mainly based on the utilization of natural energy such as solar energy and wind energy, but these are limited by natural conditions and cannot provide energy stably. Vibration energy can be seen everywhere in the environment, such as roads on which vehicles drive, airport runways, network nodes, etc. The capture of these vibrational energies will open up a new way of sustainable green energy. [0003] There are three ways to capture vibration...

Claims

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Application Information

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IPC IPC(8): H02N2/18
Inventor 孙春华张红兵尚广庆张永康朱学超
Owner SUZHOU VOCATIONAL UNIV
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