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A multi-directional vibration energy harvesting structure based on a three-dimensional flexible main beam

A vibration energy harvesting and three-dimensional flexible technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve low energy harvesting efficiency, insufficient environmental applicability, work Narrow frequency band and other issues to achieve the effect of improving continuity and stability, enhancing environmental adaptability, and broadening the working frequency band

Active Publication Date: 2022-03-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings and deficiencies of the existing technology, a multi-directional vibration energy harvesting structure based on a three-dimensional flexible main beam is provided, which can solve the problems of a vibration energy harvesting device with a narrow operating frequency band, high resonance frequency, single energy harvesting direction and vibration frequency. Random and variable results in extremely low energy harvesting efficiency, poor output stability and continuity, and insufficient applicability to the environment

Method used

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  • A multi-directional vibration energy harvesting structure based on a three-dimensional flexible main beam
  • A multi-directional vibration energy harvesting structure based on a three-dimensional flexible main beam
  • A multi-directional vibration energy harvesting structure based on a three-dimensional flexible main beam

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Embodiment 1

[0026] Such as Figure 1-Figure 6 As shown, a multi-directional vibration energy collection structure based on a three-dimensional flexible main beam includes a flexible main beam 1, a first piezoelectric collection rod 2, a second piezoelectric collection rod 3, a third piezoelectric collection rod 4 and a piezoelectric collection rod. The electric cantilever beam 5, the flexible main beam 1 includes a horizontal ring 10 and a vertical ring 11, the horizontal ring 10 and the vertical ring 11 are vertically intersected as one, and the end of the first piezoelectric collection rod 2 is vertically glued The junction is fixed on the outer cylindrical side surface of the horizontal ring 10 and the vertical ring 11, the second piezoelectric collection rod 3 is arranged along the axis direction of the horizontal ring 10 or the vertical ring 11, and the end of the second piezoelectric collection rod 3 Vertical bonding is fixed on the upper and lower surfaces of the horizontal ring 10...

Embodiment 2

[0028] Such as Figure 2-Figure 7As shown, a multi-directional vibration energy collection structure based on a three-dimensional flexible main beam includes a flexible main beam 1, a first piezoelectric collection rod 2, a second piezoelectric collection rod 3, a third piezoelectric collection rod 4 and a piezoelectric collection rod. The electric cantilever beam 5, the flexible main beam 1 includes a horizontal ring 10 and a vertical ring 11, the horizontal ring 10 and the vertical ring 11 are vertically intersected as one, and the end of the first piezoelectric collection rod 2 is vertically glued The junction is fixed on the outer cylindrical side surface of the horizontal ring 10 and the vertical ring 11, the second piezoelectric collection rod 3 is arranged along the axis direction of the horizontal ring 10 or the vertical ring 11, and the end of the second piezoelectric collection rod 3 Vertical bonding is fixed on the upper and lower surfaces of the horizontal ring 10,...

Embodiment 3

[0030] Such as Figure 2-Figure 6 , Figure 8 As shown, a multi-directional vibration energy collection structure based on a three-dimensional flexible main beam includes a flexible main beam 1, a first piezoelectric collection rod 2, a second piezoelectric collection rod 3, a third piezoelectric collection rod 4 and a piezoelectric collection rod. The electric cantilever beam 5, the flexible main beam 1 includes a horizontal ring 10 and a vertical ring 11, the horizontal ring 10 and the vertical ring 11 are vertically intersected as one, and the end of the first piezoelectric collection rod 2 is vertically glued The junction is fixed on the outer cylindrical side surface of the horizontal ring 10 and the vertical ring 11, the second piezoelectric collection rod 3 is arranged along the axis direction of the horizontal ring 10 or the vertical ring 11, and the end of the second piezoelectric collection rod 3 Vertical bonding is fixed on the upper and lower surfaces of the horiz...

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Abstract

A multi-directional vibration energy collection structure based on a three-dimensional flexible main beam provided by the present invention includes a flexible main beam, a first piezoelectric collection rod, a second piezoelectric collection rod, a third piezoelectric collection rod and a piezoelectric cantilever beam , the piezoelectric cantilever beam can collect vibration energy in the horizontal and vertical directions, the first piezoelectric collection rod can collect any vibration energy perpendicular to the radial direction of the horizontal ring and the vertical ring, and the second piezoelectric collection rod can collect any One is parallel to the vibration energy of the horizontal ring and the vertical ring surface, so as to realize the collection of multi-directional vibration energy; in addition, by adjusting the size, quantity and position of the piezoelectric cantilever beam and the piezoelectric collection rod, different piezoelectric cantilever beams can be realized. It is separated from the vibration mode of the piezoelectric collection rod, broadens the operating frequency band of the system, and can more effectively collect external vibration energy; at the same time, it can timely adjust the effective frequency bandwidth of the system to improve the continuity and stability of the energy harvester output. Enhance the environmental adaptability of the vibration energy harvester.

Description

technical field [0001] The invention relates to the field of microelectromechanical devices, in particular to a multi-directional vibration energy collection structure based on a three-dimensional flexible main beam. Background technique [0002] With the widespread deployment of wireless sensor networks in the field environment and industrial monitoring, and the rapid development of wearable devices and portable medical electronic systems, the power supply of wireless sensor network nodes and tiny electronic devices in special fields has become a major issue. Key issues to further advance its application. There are some insurmountable defects in the traditional power supply, such as the large size of the chemical battery, the short life, the pollution of the environment, and the difficulty of connecting the wired power supply. Therefore, the energy in the surrounding environment is collected and converted into electric energy to meet the needs of wireless sensor networks or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/186
Inventor 王莹王玲桃
Owner SHANXI UNIV