Friction-piezoelectric-magnetoelectric compound three-dimensional space multi-degree-of-freedom micro-energy acquisition device

Abstract

The invention relates to an energy acquisition technology of mechanical energy, and particularly relates to a friction-piezoelectric-magnetoelectric compound three-dimensional space multi-degree-of-freedom micro-energy acquisition device which comprises electromagnetic induction coils, an external spherical shell, a buffer layer, a piezoelectric layer, a frictional layer, an internal spherical shell and a magnet ball which are arranged from outside to inside in turn. All the coils are connected in a series mode; the buffer layer is arranged between the external spherical shell and the piezoelectric layer in a spacing way and aims at increasing piezoelectric deformation quantity and then enhancing power generation capacity; and positive materials and negative materials in frictional units are arranged in an alternating way, all the positive materials are connected together, all the negative materials are connected together, and charge transfer between the positive material and the negative material is realized by rolling of a movement unit between the positive material and the negative material. Mechanical energy acquisition of multi-degree-of-freedom movement modes is realized by utilizing three-dimensional space rolling of the movement unit in the hollow spherical shell; and piezoelectric, magnetoelectric and frictional power generation units with complementary working modes are integrated so that high-efficiency acquisition of mechanical energy is realized.

Description

technical field [0001] The invention belongs to the technical field of energy materials and devices, and relates to a device structure design and a processing method of a friction-piezoelectric-magnetic-electric composite three-dimensional full-space multi-degree-of-freedom micro-energy harvester. Background technique [0002] Energy is a necessity for human survival and the driving force for the progress of social civilization. However, with the intensification of the global greenhouse effect and the sharp increase in energy demand, the energy crisis is a major challenge facing the world, and the research and development of clean and renewable energy has become a global priority. A hot topic for human beings. On the other hand, the prevalence of portable electronics and wireless sensors has drawn a lot of attention to the power supply issues in these devices. At present, lithium-ion batteries are the main way to achieve power supply for portable electronic products and wir...

AI Technical Summary

Problems solved by technology

However, traditionally designed energy harvesting devices can only harvest energy in a single direction, and the energy in other directions is wasted, which greatly reduces the conversion efficiency of the device

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