Friction nano-generator with helically folded elastic structure

Abstract

The invention relates to the field of electrostatic friction and energy conversion, and especially relates to a friction nano-generator with a helically folded elastic structure. The generator adoptsa helically folded elastic structure, thereby being capable of enabling a friction layer of each power generation unit to realize synchronous contact and separation, being capable of enabling a firstfriction layer to be contacted at both sides, and enabling the quantity of electric charged transferred within per unit time to be doubled. The friction nano-generator is mainly used for solving the technical problems of low output power and unstable output performance in the vibration or reciprocating process.

Description

technical field [0001] The invention relates to the field of electrostatic friction and energy conversion, in particular to a friction nanogenerator with a helically folded elastic structure. Background technique [0002] The energy problem is one of the major issues affecting human progress and sustainable development. Various researches around new energy development and renewable energy reuse are being carried out in full swing around the world; the friction of a spiral folded elastic structure involved in the present invention The nanogenerator just takes over the above concepts; the electrostatic triboelectric generator based on the triboelectric effect and the principle of electrostatic induction has achieved a lot of research results through the continuous efforts of many scientific teams such as Wang Zhonglin's team. Through periodic vertical contact-separation, in-plane sliding, Electrostatic friction generators with rotation or piezoelectric effects have been succes...

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Problems solved by technology

[0002] The energy problem is one of the major issues affecting human progress and sustainable development. Various researches around new energy development and renewable energy reuse are being carried out in full swing around the world; the friction of a spiral folded elastic structure involved in the present invention The nanogenerator just takes over the above concepts; the electrostatic triboelectric generator based on the triboelectric effect and the principle of electrostatic induction has achieved a lot of research results through the continuous efforts of many scientific teams such as Wang Zhonglin's team. Through periodic vertical contact-separation, in-plane sliding, Electrostatic friction generators with rotation or piezoelectric effects have been successfully used to collect mechanical energy; Chinese patent application No. 201310021766.3 discloses a foldable micro-vibration generator and its manufacturing method, through which two friction units Contact-separation, generating charges, but the two friction units of this form of friction generator cannot automatically separate and return to the original state after contact, and the charge density is small, and the output power is low; the Chinese patent application with application number 201710010956.3 discloses a The frictional nanogenerator with elastic structure makes the two layers of the elastic substrate close to and separate from each other through the multi-layer folded structure of the serpentine shape, and generates an alternating current signal between the first layer and the second layer, and multiple power generation The electrical signals of the unit are rectified and combined in parallel to form a current output. The effect of the automatic separation of the triboelectric nanogenerator after approaching is not good, and the friction layer is in single-sided contact. The charge density per unit area is small, and the output current is low. Low; the Chinese patent application with the application number 201710484297.7 discloses a multi-layer flexible folding friction generator, but the friction layers are single-sided contact, the obtained charge density per unit area is small, and the output current is low; the present invention The helical folded elastic structure is adopted, so that the friction layer of each power generation unit can realize synchronous contact and separation, and the double-sided micro-nano-scale structure is used to make the friction layer contact on both sides, and the amount of charge transferred per unit time is doubled, thereby improving Current output; the friction nanogenerator with helical folded elastic structure and double-sided micro-nano scale structure of the present invention can be applied to the vibration frequency of wide band, so its application range is very wide

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