Wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed

Abstract

The invention discloses a self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed. The wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at the low wind speed comprises an intensive air channel, an umbrella-shaped rectifying device, a fan and a triangular piezoelectric cantilever; the umbrella-shaped rectifying device which is installed in the middle of the air channel commonly constrain the wind speed and the wind direction with the intensive air channel; the wind speed after constraint through the intensive air channel and the rectifying device is increased and points to the edge of a fan impeller and accordingly the fan can be started under the low wind speed and the wind kinetic energy is converted to be fan mechanical energy; 3mm coincidence is formed between the fan impeller edge and the cantilever, so that the cantilever can be effectively beat after the fan is started; the cantilever is a bi-crystal piezoelectric cantilever with the phosphor bronze serving as a base plate and the upper surface and the lower surface being accompanied by PVDF (Polyvinylidene Fluoride) thin films; electric energy is generated when the cantilever deforms due to beat by the fan and accordingly the fan mechanical energy is converted to the electric energy.

Description

technical field [0001] The invention belongs to the field of piezoelectric wind energy collection, and relates to an energy conversion device for converting wind energy into mechanical energy and then converting the mechanical energy into electrical energy. Background technique [0002] In recent years, wireless sensor network has developed rapidly as a new type of network communication technology, and has been widely used in various fields of production and life. However, the power supply technology of wireless sensor nodes has not yet been solved, and the chemical battery needs to be replaced regularly. . Piezoelectric power generation is another power generation method other than electromagnetic and chemical formulas. It has the advantages of no electromagnetic interference, no consumption of primary energy, clean and efficient, etc. As a clean and renewable energy, wind energy widely exists in every corner of nature, and its potential energy is huge. Currently widely u...

AI Technical Summary

Problems solved by technology

The device mentioned in the above patents has a relatively complex mechanical structure, and the use of magnets, rotors and other materials consumes a lot of material, and the cost is difficult to control. Moreover, increasing the number of cantilever beams in the same dimension will make it difficult to realize the miniaturization of the device.

Images