A surface miniature piezoelectric power generation device

Abstract

The invention belongs to the technical field of power generation devices and provides a pavement miniature piezoelectric power generation device. The pavement micro-piezoelectric power generation device is composed of an upper cover, a lower cover, an electromechanical conversion unit and an air cushion. The electromechanical conversion unit is a metal sheet and is surrounded by a piezoelectric ceramic-Polyurethane sponge composite material. The Piezoelectric ceramic-Polyurethane sponge composite material is prepared by immersing polyurethane sponge in the dispersion of nano-piezoelectric ceramic powder, curing and drying. Compared with the traditional method, the pavement miniature piezoelectric power generation device of the invention utilizes the composite material with high elasticityand high sensitivity prepared by using the polyurethane sponge and the piezoelectric ceramic material, can generate larger strain under the action of smaller compressive stress, has good power generation effect, is simple in structure, is not easy to be damaged, is low in cost, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of power generation devices and provides a road micro piezoelectric power generation device. Background technique [0002] Energy is the key to technological development. The development of major technologies in history is related to the utilization of new energy or the improvement of energy utilization methods. All human activities are inseparable from energy, and the development of society is based on energy consumption. With the depletion of environmental resources, the recovery and reuse of energy has been valued by the whole society. In recent years, the road mileage and the number of motor vehicles in my country have increased rapidly, and a large amount of mechanical vibration energy has been accumulated inside the road under the frequent action of vehicle loads. Therefore, the development of a power generation surface that can convert the mechanical strain energy inside the road into electrical en...

AI Technical Summary

Problems solved by technology

In addition, Chen Wenge and others invented a piezoelectric power generation and energy storage device for road surfaces (China Invention Patent Application No. 201420857671.5), which includes a buffer layer set on the roadbed, and multiple piezoelectric sheets are set on the buffer layer. A plurality of piezoelectric sheets are connected to the energy storage device after being mixed with wires, and an asphalt layer is arranged on the top of the piezoelectric sheet; However, it is difficult to collect, store and reuse; it only needs to carry out simple transformation on urban roads, lay piezoelectric devices in the road surface or directly use piezoelectric materials as road components, and generate electricity through the vibration of the road surface when the vehicle is walking, and Store this energy and use it when necessary

[0006] It can be seen that the piezoelectric power generation devices in the prior art generally have the defects of poor elasticity and low sensitivity, resulting in poor power generation effect and poor cycle performance, which restricts the development and application of piezoelectric power generation technology

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