Piezoelectric generating device based on stair

Abstract

The invention discloses a piezoelectric generating device based on a stair. The piezoelectric generating device based on the stair comprises two parts, namely a rotor and a stator, wherein the rotor consists of a pedal (6) and positioning pins (5) linked on the pedal (6), and is arranged above the stator; the stator consists of a base plate (1), supporting and limiting strips (2), springs (3) and piezoelectric generating units (4); the supporting and limiting strips (2), the springs (3) and the piezoelectric generating units (4) are mounted on the base plate (1); each piezoelectric generating unit (4) consists of an upper press plate (48), a T-shaped elastic rod (45), a driving press block (46) arranged at the upper side of the T-shaped elastic rod (45) near the upper press plate (48), a driven press block (44) arranged at the end part of the lower side of the T-shaped elastic rod (45), a supporting board A (40), a supporting board B (49), a linkage piece (47), a copper pole plate (42), an piezoelectric ceramic piece A (41) and a piezoelectric ceramic piece B (42); the piezoelectric ceramic piece A (41) and the piezoelectric ceramic piece B (42) are adhered to the upper face and the lower face of the copper pole plate (42); and the piezoelectric generating units (4) are fixed on the upper surface of the base plate (1) through the linkage pieces (47).

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] With the increasing shortage of energy and the increasing awareness of people's environmental protection, issues such as energy conservation and environmental protection, as well as the development and utilization of environmentally friendly and non-polluting new energy have attracted much attention and attention from all over the world. 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. Utilizing the kinetic energy of the human body for piezoelectric...

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Problems solved by technology

[0004] In order to improve the benefits of existing piezoelectric power generation using the kinetic energy of the human body, 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 the potential energy of spring deformation. , and then release the spring deformation potential energy to knock the piezoelectric material to generate piezoelectric electricity. The device has a simple structure, low cost, and concentrated power generation. However, it is found in the experiment that the device has certain shortcomings. The speed is relatively slow, and the percussion force formed on the piezoelectric ceramic material after the spring deformation potential energy is released is very small, which affects the power generation conversion efficiency of the piezoelectric ceramic sheet. In addition, the human body tramples on the stroke greater than 2mm, and there is discomfort such as stepping on the air.

[0005] 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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