Stairs-based piezoelectric generating device

Abstract

The invention discloses a stairs-based piezoelectric generating device. The device comprises two parts, namely, a rotor and a stator; the rotor which is arranged above the stator comprises a pedal, and a locating pin that is connected to the pedal; the stator comprises a base plate, a supporting limiting strip, a spring and a piezoelectric generating unit, wherein the supporting limiting strip, the spring and the piezoelectric generating unit are mounted on the base plate; the piezoelectric generating unit comprises an upper pressing plate, a T-shaped elastic rod, a drive pressing block, a driven pressing block, an arc-surface bottom plate, a supporting plate, a connecting part, a copper pole plate, an A piezoelectric ceramic chip and a B piezoelectric ceramic chip, wherein the drive pressing block is arranged at the upper side of the T-shaped elastic rod and close to the upper pressing plate; the driven pressing block is arranged at the end part of the lower side of the T-shaped elastic rod; the A piezoelectric ceramic sheet chip and the B piezoelectric ceramic sheet chip are respectively adhered on the upper surface and the lower surface of the copper pole plate; the piezoelectric generating unit is fixed to the upper surface of the base plate through the connecting part. The piezoelectric generating device has the advantages that the structure is simple, the power capacity is large, the piezoelectric conversion efficiency is high, the piezoelectric ceramic is uneasy to be damaged and broken, any uncomfortable sense like pealing on an empty is avoided.

Description

technical field [0001] The invention relates to an energy recovery device utilizing the positive piezoelectric effect of a piezoelectric ceramic material, in particular to a piezoelectric power generation device based on stairs. Background technique [0002] The device that utilizes piezoelectric ceramic positive piezoelectric effect to generate electricity has become a focus of attention of researchers all over the world because of its advantages of environmental protection and energy saving, simple structure, no electromagnetic interference, easy implementation, and low cost. There are many piezoelectric power generation devices that use the kinetic energy of the human body to be studied at home and abroad. The patent document with the publication number CN201956927U discloses a piezoelectric power generation device that uses the human body to frequently step on it. The device uses the human body to step on the spring lever mechanism to form a spring deformation. potential...

AI Technical Summary

Problems solved by technology

There are many piezoelectric power generation devices that use the kinetic energy of the human body to be studied at home and abroad. The patent document with the publication number CN201956927U discloses a piezoelectric power generation device that uses the human body to frequently step on it. The device uses the human body to step on the spring lever mechanism to form a spring deformation. potential energy, and then release the spring deformation potential energy to generate piezoelectric power by knocking the piezoelectric material. The device has a simple structure, low cost, and concentrated power generation. Finally, the percussion force formed on the piezoelectric ceramic material is very small, which affects the power generation conversion efficiency of the piezoelectric ceramic sheet. In addition, the stroke of the human body is greater than 2mm, and there is discomfort such as stepping on the air.

[0003] In order to generate electricity by using the energy of the human body stepping on the steps in front of the building, the patent document with the publication number CN102064734A discloses a piezoelectric power generation device for the steps in front of the building. Electric ceramics are trampled to generate electric energy and collect energy. This device has the advantages of simple structure, low cost, and concentrated power generation. However, this device also has certain shortcomings: the piezoelectric conversion efficiency is low, and the human body directly impacts the piezoelectric ceramics after stepping on the carpet. sheet, it is easy to cause brittle fracture and damage to the piezoelectric ceramic sheet

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