A wind-induced vibration piezoelectric energy harvesting device

Abstract

The invention relates to a wind-induced vibration piezoelectric energy collecting device. The wind-induced vibration piezoelectric energy collecting device comprises a left fixing part, a first sliding block component, flow preventing cylinders, a windward thin plate, a bent beam, a piezoelectric cantilever beam component, bolts, a right fixing part, supporting rods, a second sliding block component and a pre-press spring. The ends of the four supporting rods are fixedly arranged on the four corners of the left fixing part and the four corners of the right fixing part through the bolts respectively, the windward thin plate is fixed between the first sliding block component and the second sliding block component, and the flow preventing cylinders are fixedly arranged at the two ends of the windward thin plate respectively. Notches are formed in the middle of the second sliding block component and the middle of the right fixing part respectively, and the two ends of the bent beam are fixedly arranged in the notches of the second sliding block component and the right fixing part respectively. The prepress spring is installed between the first sliding block component and the left fixing part. The piezoelectric cantilever beam component is fixed to one or two sides of the middle of the bent beam. Even when the wind-induced vibration piezoelectric energy collecting device is located on an occasion with the low wind speed, the piezoelectric component can also generate large vibration, a large amount of electric energy can be outputted, and the wind energy collecting efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of piezoelectric energy collection, in particular to a wind-induced vibration piezoelectric energy collection device. Background technique [0002] With the development of science and technology, wireless sensor networks have been applied in many fields, but how to supply energy for wireless sensor network nodes is a difficult problem that needs to be solved. The use of batteries for energy supply has problems such as limited power and high replacement and maintenance costs. Finding new energy supply methods for wireless sensor network nodes has become a hot spot for researchers. [0003] An effective solution is to harvest energy directly from the environment to power sensors, which can promote the development of clean energy and reduce environmental pollution. Wind energy is a clean renewable energy with huge storage capacity. To collect wind energy to generate electricity, in addition to using traditional large-s...

AI Technical Summary

Problems solved by technology

However, there are still deficiencies such as low energy conversion efficiency, large device volume, complex and various parts, and high wind speed at start-up, which also hinder the development and application of piezoelectric wind energy harvesting devices.

Images