低频小振动能量收集的伞型摩擦纳米发电机  

Umbrella-shaped Triboelectric Nanogenerator for Low-frequency Small Vibration Energy Harvesting

作　　者：刘安国 苏玉香 罗健锋 赵柯洋 赵西增[2] LIU Anguo;SU Yuxiang;LUO Jianfeng;ZHAO Keyang;ZHAO Xizeng(School of Marine Engineering Equipment,Zhejiang Ocean University,Zhoushan 316022,Zhejiang Province,China;School of Ocean College,Zhejiang University,Zhoushan 316021,Zhejiang Province,China)

机构地区：[1]浙江海洋大学海洋工程装备学院,浙江省舟山市316022 [2]浙江大学海洋学院,浙江省舟山市316021

出　　处：《中国电机工程学报》2024年第10期4103-4111,I0030,共10页Proceedings of the CSEE

基　　金：舟山市科技计划项目(2022C41009);浙江省自然科学基金项目(LQ18E070004);浙江省教育厅科研项目(Y202250481)。

摘　　要：针对摩擦纳米发电机功率密度低、触发难、耐久度差的问题,该文设计一种伞型摩擦纳米发电机(umbrella-shape triboelectric nanogenerator,U-TENG)用于收集低频小振动能量。U-TENG以纸基作为连接机构,使上下伞叶在振动环境中进行有序开合,可以有效增加摩擦层数量、增大接触面积、改善接触面的贴合效果。另外,在摩擦电单元的设计上,通过叠放氟橡胶提高导电层上的感应电荷量,以优化电能输出性能。实验结果表明:当两个摩擦电单元并联运行时,UTENG的最大短路电流和开路电压分别能够达到125.9μA和804 V;在低频小幅振动下其瞬时功率密度最高达到509.3 W/m^(3);U-TENG可以收集环境中不同形式的振动能,以收集脉冲式振动的能力尤为突出,最多可驱动960个LED灯。该方法可为环境中低频振动能的高效捕获提供思路。Aiming at low power density,difficult triggering,and poor durability of triboelectric nanogenerator,a novel-designed umbrella-shaped triboelectric nanogenerator(U-TENG)is proposed in this paper to collect low-frequency small vibration energy.First,based on the folding umbrella structure,the paper base is used as the connecting mechanism,enabling the upper and lower umbrella panels to open and close in an orderly fashion in a vibration environment.This effectively improves the bonding effect and increases the number of electric units.Besides,in the configuration of the triboelectric unit,by stacking the fluoro rubber,more charge is induced on the conductive layers to optimize the output performance.The results show that the maximum ISC and VOC of the TENG can reach 125.9μA and 804 V,respectively,when two triboelectric units are operated in parallel on the folding umbrella.The instantaneous power density is up to 509.3 W/m^(3)under low frequency and small amplitude vibration.U-TENG can collect different forms of vibration energy in the environment,especially the ability to collect pulse vibration,which drives up to about 960 LED lights.This provides a new idea for the efficient capture of low-frequency vibration energy in complex environments.

关 键 词：摩擦纳米发电机 伞型 振动能收集 高能量密度 叠加输出 

分 类 号：TM31[电气工程—电机]