多对偶夹角开合式TENG的结构设计和发电性能分析

Structure Design and Electrical Performance Study of the Angular Contact-Separation TENG with Multi-Dielectric Plate Pairs

提出一种多对偶夹角开合式摩擦纳米发电机的结构设计,将多个极板进行圆周布置,使各极板与相邻极板均构成摩擦对偶,形成多对偶夹角开合式发电结构。利用COMSOL Multiphysics有限元仿真软件研究了该新型摩擦纳米发电机的电势分布、开路电压、电极电荷量等参数随极板极角或时间的变化规律。结果表明:1)单对极板的开路电压随两板间极角的增大而增大;2)N对“串联”极板的开路电压均值是单对极板开路电压均值的N倍;3)极板的电极电荷量随两板夹角增大而缓慢增大;4)极板的主体区域电势分布较为均匀,但在极板端部电势分布具有明显的边缘效应。

A conception of the angular contact-separation TENG with multi dielectric pairs is proposed in which a plurality of polar plates are arranged circumferentially so that each plate and its neighbouring plate are paired to form a friction dual thus all the plates forming a multi dual angular contact-separation structure to generate electricity.The variations of the parameters such as potential distribution open circuit voltage electrode charge of the proposed TENG with the polar angle or with time are studied by the finite element simulation software named COMSOL Multiphysics.The results show that 1 the open circuit voltage of the single plate pair increases with the polar angle 2 the average open circuit voltage of N plate pairs in series is N times of that of the single plate pair 3 the amount of the electrode charge increases slowly with the angle between the two plates 4 the potential distribution in the main area of the plate is relatively uniform but it shows obvious edge effect at the end of the plate.