Piezoelectric self-generating unit for generating electric charge by utilizing direct piezoelectric effect

Abstract

The invention discloses a piezoelectric self-generating unit for generating electric charge by utilizing direct piezoelectric effect. Piezoelectric ceramics of which the matrix is PMnS-PZN-PZT system are prepared by the traditional solid-phase method, and bismuth ferrite is doped on the basis; and according to the required quantity of electric charge, piezoelectric ceramic materials with different shapes, sizes and quantities are selected to connect a metal conductive material, and then packaged to form the piezoelectric self-generating unit or the piezoelectric self-generating unit is further combined, is buried in a bituminous concrete pavement structure layer, and is matched with an energy acquisition device, a DC-DC converter, an energy storage device, a power supply monitoring and management system, an illuminating device so as to output the large quantity of electric charge generated by the piezoelectric self-generating unit under the action of mechanical force and supply the electric charge to illumination of high standard highways, tunnels and bridge deck pavement, railways or airport runways, and urban roads and side pavements. The piezoelectric self-generating unit not only can effectively solve the problem that power supply for lamps in urban and rural roads, tunnels and the like is inconvenient, but also is energy-saving, environment-friendly, and safe without high-voltage electric shock danger, and has obvious economic and social value.

Description

technical field [0001] The present invention relates to a piezoelectric self-generating unit that utilizes the positive piezoelectric effect to generate charges. In particular, by laying the piezoelectric self-generating unit under the asphalt concrete road surface or directly using the piezoelectric self-generating unit as a component of the road surface, the vibration or squeezing energy of the vehicle is used to generate electric energy. Background technique [0002] The piezoelectric effect is a phenomenon in which mechanical energy and electrical energy are exchanged in materials. There are two types of piezoelectric effect, direct piezoelectric effect and inverse piezoelectric effect. The positive piezoelectric effect is to convert mechanical energy into electrical energy, that is, when a physical pressure is applied to the piezoelectric material, the electric dipole moment in the material body will be shortened due to compression. At this time, the piezoelectric mate...

AI Technical Summary

Problems solved by technology

There are many forms and types of mechanical energy in the environment. Although there are different reports on the development of piezoelectric generators, commercialized produ

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