A Wind Piezoelectric Power Generation Device Based on Multilayer Cantilever Beams

Abstract

A wind-driven piezoelectric power generation device based on a multi-layer cantilever beam, belonging to the technical field of wind power generation, including a power generation device bracket, and a crank slider mechanism composed of a windmill bracket, a windmill, a windmill shaft, a driving rod, a driven rod, and a slider The slider is slidably arranged in the bracket of the power generating device, and a bearing shaft is arranged between the slider and the slider, and a piezoelectric generating device is arranged on the supporting shaft, and the piezoelectric generating device is composed of three layers of piezoelectric components, and each layer is laminated The electrical components are composed of cantilever beam support, cantilever beam, counterweight ring, spring, piezoelectric sheet and U-shaped counterweight; each layer of cantilever beam is distributed in a ring along the cantilever beam support, and the outer end of the cantilever beam passes through the spring and distribution The weight rings are connected, and the size of the cantilever beam on each layer is different from that of the counterweight ring. At the same time, a U-shaped counterweight is installed on the counterweight ring, and the piezoelectric device converts wind energy through the crank slider mechanism. The present invention enables the entire piezoelectric power generation The device can better adapt to the vibration frequency in the environment, thereby improving the effectiveness of mechanical vibration energy recovery.

Description

Technical field [0001] The invention belongs to the technical field of wind power generation, and relates to a wind piezoelectric power generation device, in particular to a wind piezoelectric power generation device based on a multi-layer cantilever beam. Background technique [0002] Current wind power generation devices have high cost and low efficiency. At the same time, due to the intermittent nature of natural wind, wind power generation is obviously restricted by region and climate. Piezoelectric power generation uses the positive piezoelectric effect of piezoelectric ceramics to realize the conversion of mechanical energy to electrical energy. The piezoelectric power generation device collects the energy of vibration in the environment through piezoelectric materials and converts it into a microelectronic product that can replace batteries For power supply, the piezoelectric power generation device has the advantages of simple structure, no external power supply, almost u...

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Problems solved by technology

[0004] Aiming at the shortcomings of current multi-layer cantilever beams with single vibration frequency, inability to effectively absorb vibration energy in the environment, low energy utilization efficiency, and poor environmental adaptability, the present invention proposes a wind-driven piezoelectric power generation device based on multi-layer cantilever beams, through The multi-resonance frequency piezoelectric power generation structure can solve the shortcomings of traditional wind power generation devices such as complex structure and high cost, and can solve the problem of single vibration frequency of multi-layer cantilever beams, and can also absorb vibration energy in the environment more effectively, further improving energy efficiency

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