Flexible wearable friction nanometer power generator with comprehensive multi-mode mechanical energy collecting functions

Abstract

The invention belongs to the technical field of flexible devices, and discloses a flexible wearable friction nanometer power generator with comprehensive multi-mode mechanical energy collecting functions. The flexible wearable friction nanometer power generator comprises a first friction component and a second friction component. Each friction component comprises an insulating isolation layer, a conductive element and a friction layer. A first friction surface and a second friction surface are in contact-separation cycle under the effect of normal external force when the flexible wearable friction nanometer power generator is in contact and separation modes under the effect of external force, the normal relative distances between friction units on the two friction surfaces change, and electric signals can be outputted to outer circuits by the first conductive element and the second conductive element; the first friction surface and the second friction surface relatively slide under theeffect of tangential external force when the flexible wearable friction nanometer power generator is in independent friction modes, the tangential relative locations of the first friction units and the second conductive element change, and electric signals can be outputted to the outer circuits by two secondary second conductive elements of the second conductive element. The flexible wearable friction nanometer power generator has the advantages that the multi-dimensional mechanical energy collecting performance of the flexible wearable friction nanometer power generator can be enhanced, andthe electric output performance of the flexible wearable friction nanometer power generator can be improved.

Description

technical field [0001] The invention belongs to the technical field of flexible devices, and relates to a flexible and wearable frictional nanogenerator capable of collecting mechanical energy in all directions and in multiple modes. Background technique [0002] The nanotriboelectric generator is an energy harvesting device based on the nanoscale triboelectric effect, which can convert the mechanical energy of the external environment into electrical energy (or a self-powered sensor device that converts mechanical motion into electrical signals). Professor Wang Zhonglin of the Georgia Institute of Technology in the United States first proposed in 2006 and successfully developed the world's first triboelectric nanogenerator in 2012. However, the technology of triboelectric nanogenerators is still in the stage of development and research, and its technology is not mature enough in terms of material selection or its environmental influence (especially humidity). How to improv...

AI Technical Summary

Problems solved by technology

Flexible frictional nanogenerators use the elasticity and stretchability of materials to convert the mechanical energy of the daily movement of the human body into electrical energy and output it, which greatly improves the application range of frictional nanogenerators. The direction and periodicity requirements are relatively strict. The electric energy output of the generator is mostly limited to the friction motion in a specific direction, and the electrostatic energy generated by friction in other directions cannot be effectively utilized.

At the same time, the energy sources of existing triboelectric nanogenerators are often limited to the mechanical energy obtained by a single movement. For example, the triboelectric nanogenerator based on the contact-separation mode cannot collect the electrical energy output caused by periodic friction. Therefore, a Frictional nanogenerators that can switch working modes according to different types of motion will help expand their application range and improve the efficiency of collection and conversion of mechanical energy

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