Piezoelectric generator excited by human motion

Abstract

The invention relates to a piezoelectric generator excited by human motion, and belongs to the field of power generation. A flange ring and a bottom wall are arranged at the two ends of the cylindrical wall of a shell. Two sets of side lugs are arranged on the outer side of the bottom wall, and a transverse bolt is arranged between two side lugs of each set. An end cover is arranged at the end of the flange ring, shaft holes are formed in the center of the end cover and the center of the bottom wall, and long pins are arranged in long pin holes in the flange ring and the bottom wall and sleeved with pin sleeves. The two ends of a main shaft of an exciter are arranged in the shaft holes in the end cover and the bottom wall respectively, swinging arms are arranged on flange plates on the two sides of the main shaft of the exciter, and swinging hammers are arranged at the ends of the swinging arms. Short pins are riveted in short pin holes in the flange plates and sleeved with pin sleeves. The pin sleeves which with the long pins and the short pins are sleeved are riveted to the two ends of a metal film, the metal film and a piezoelectric film adhering to the arc protrusion of the metal film form a piezoelectric vibrator, and the piezoelectric vibrator and the pin sleeves riveted to he two ends of the piezoelectric vibrator form a transducer. The piezoelectric generator has the advantages that the telescopic piezoelectric vibrator is hinged to the shell and the exciter and can collect the energy of the human motion, so that the piezoelectric generator has high reliability and power generation capacity.

Description

technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to a piezoelectric generator excited by human body movement, which provides real-time energy supply for micro-power portable electronic products. Background technique [0002] In order to meet the self-power supply requirements of micro-power electronic products and micro-miniature remote sensing and embedded monitoring systems, and to avoid the pollution of the environment by a large number of waste batteries, research on micro-miniature generators based on the principles of electromagnetic, electrostatic, thermoelectric, capacitive, and piezoelectric It has become a frontier hotspot at home and abroad. All kinds of power generation devices have their own advantages and fields of application. The advantages of piezoelectric power generation devices lie in their simple structure, ease of manufacture, and realization of structural miniaturization and integration....

AI Technical Summary

Problems solved by technology

In terms of using piezoelectric materials to construct generators, there are many patent applications at home and abroad, but the energy sources are mainly concentrated in environmental energy such as vibration energy, fluid energy, and rotating body kinetic energy, and its structure and principle are not suitable for human body motion to generate electricity; In addition, the existing piezoelectric generators all use the bending deformation mode of circular or cantilever beam piezoelectric vibrators to generate electricity. Reliability decline caused by excessive stress and crushing, and it is not suitable for environments with large human body movements such as running and jumping

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