Wide-frequency-band wind-induced vibration piezoelectric power generation device

Abstract

The invention relates to a wide-frequency-band wind-induced vibration piezoelectric power generation device. The wide-frequency-band wind-induced vibration piezoelectric power generation device is composed of a base, a support, wind wheels, rotary shafts, a belt drive, crank sliding block mechanisms, piezoelectric cantilever beams and the like. The wind wheels and the crank sliding block mechanisms are symmetrically arranged on the rotary shafts of the wind wheels and the crank sliding block mechanisms, the belt drive is a round belt drive, the crank sliding block mechanisms are positive biascrank sliding block mechanisms and composed of cranks, connecting rods and sliding blocks, a guiding rail where the sliding blocks move in a reciprocating mode is a composite guiding rail which is combined by a cylindrical surface and a plane, permanent magnets with the same magnetism are bonded on the sliding blocks and the free ends of the cantilever beams correspondingly, and the magnetizationdirection is the vertical direction. Under the effect of the wind force, the sliding blocks are driven to move in a reciprocating mode, the repulsive force among the permanent magnets enables the cantilever beams to vibrate violently, further piezoelectric patches on the cantilever beams deform, and electric energy is generated. According to the wide-frequency-band wind-induced vibration piezoelectric power generation device, by utilizing low-frequency vibration under the low-wind-speed environment, the vibration frequency band is wide, the wind energy collecting efficiency is obviously improved and the electric energy production is obviously increased, meanwhile, the mechanical structure is simple, the manufacturing cost is low, and the service life is long.

Description

technical field [0001] The invention relates to the field of new energy power generation, in particular to a broadband wind-induced vibration piezoelectric power generation device, which can convert wind energy into electric energy. Background technique [0002] With the rapid development of social economy, people's demand for electricity is increasing day by day. Non-renewable resources are facing depletion, making traditional thermal power generation difficult. In addition, thermal power generation is an important cause of environmental pollution. Therefore, it is urgent to find and develop new green energy sources, such as wind energy, water energy, and solar energy. Wind energy is a renewable resource and has no pollution. Therefore, wind power generation has been widely used. At present, most wind power generation uses blades to drive micro-generators to generate electricity. noise. [0003] Before the present invention, the power source of many power generating devic...

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Problems solved by technology

This invention can utilize wind energy at a low speed, and also widens the vibration frequency band. However, when the transmission ratio of the planetary gear train is too large, the starting torque of the transmission device is required t

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