Tab type piezoelectric generation device and method

Abstract

The invention relates to a tab type piezoelectric generation device and method, belonging to the fields of wind power generation or hydraulic power generation. The generation device is composed of a turbine rotor assembly, a rotor tab assembly and a piezoelectric vibrator assembly, wherein the turbine rotor assembly is composed of a circular ring (2), a rotating shaft (5) mounted in the center position of the circular ring (2) and turbine blades (1) mounted at one end of the rotating shaft (5); the rotor tab assembly comprises a rotor (6) mounted at one end of the rotating shaft (5) and multiple tabs (7) fixedly mounted on the rotor (6) along the circumferential direction; the piezoelectric vibrator assembly is composed of multiple piezoelectric vibrators (3) of which one end is fixed at the inner side of the circular ring (2) along the circumferential direction and the other end is free; and an elastic ball (4) is arranged in a cavity formed by two adjacent tabs (7) and the piezoelectric vibrators (3). Under dynamic action of fluid, a turbine drives the tabs (7) to rotate and push the elastic balls (4) so as to impact the piezoelectric vibrators (3), so that the piezoelectric vibrators (3) vibrate, thereby ensuring that the piezoelectric units generate periodic deformation and output charge so as to realize electromechanical energy conversion.

Description

technical field [0001] The invention belongs to the fields of wind power generation and hydropower generation, in particular to a piezoelectric power generation device and method. Background technique [0002] Using natural wind energy and water energy to generate electricity, the self-powered system for various outdoor facilities is in line with today's energy-saving, environmental protection, and low-carbon development trends. It is used in industrial monitoring, intelligent transportation, smart grid, mine safety, environmental monitoring, safe home, Healthcare and other fields have broad application prospects. [0003] US11 / 252903, a small wind-driven generator, was designed and manufactured by Priya of the United States using piezoelectric devices. It can generate electricity under the wind power of 8-16 kilometers per hour. The generator's paddles are attached to a cam that oscillates a series of bimorphs arranged in a circle around an axis to output electricity. Th...

AI Technical Summary

Problems solved by technology

This solution has two disadvantages: one is that the piezoelectric bimorph collides with the cam and rubs against it every time it rotates, thus causing wear and tear, resulting in energy loss and reducing the service life

The main disadvantage of this solution is that when the vehicle passes by continuously and strong wind is generated, the sign will rotate at high speed, so that the steel ball will move close to the piezoelectric conversion element, and the piezoelectric element will not receive alternating pressure. can't generate electricity

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