组合压电材料发电性能及力学特性研究  

Research on the power generation performance and mechanical characteristics of composite piezoelectric materials

作　　者：李标 邵家儒 郑子君 张欣怡 顾理 LI Biao;SHAO Jiaru;ZHENG Zijun;ZHANG Xinyi;GU Li(College of Mechanical Engineering,Chongqing University of Technology,Chongqing 404100,China)

机构地区：[1]重庆理工大学机械工程学院,重庆404100

出　　处：《电子元件与材料》2024年第2期217-222,共6页Electronic Components And Materials

基　　金：重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0802);重庆市教委科学技术研究项目(KJQN202201113,KJQN202201105)。

摘　　要：采用组合式压电材料的方法优化调节压电式能量收集器中压电结构的发电性能、刚度及振动特性,并在PZT-5H的单晶压电片中引入压电材料PZT-51与PVDF,通过调整组合形式改变了压电结构的机械刚度,通过模态分析优化了压电结构的振动特性。结果表明:合理的组合形式能够充分发挥压电材料的力电性能,提高压电能量收集器对复杂工作场景的适应性。引入压电材料PZT-51可以有效提高压电能量收集器的刚度;引入压电材料PVDF可以有效调节压电结构的一阶特征频率,在54~115 Hz范围内进行优化,有助于调节压电能量收集器的性能参数。Composite piezoelectric materials were used to optimize and adjust the power generation performance,stiffness,and vibration characteristics of the piezoelectric energy harvester.The piezoelectric material PZT-51 and PVDF were introduced into the single crystal piezoelectric sheet of PZT-5H.The piezoelectric structure can affect the mechanical stiffness of the material.The vibration characteristics of the piezoelectric structure were optimized through modal analysis.The results show that optimized piezoelectric structure can fully take advantage of its electromechanical properties and improve its adaptability to the piezoelectric energy harvester in complex working scenarios.Piezoelectric material PZT-51 can effectively improve the stiffness of the piezoelectric energy harvester.And the PVDF can effectively adjust the first-order natural frequency of the piezoelectric structure from 54 Hz to 115 Hz,which helps tune the performance parameters of the piezoelectric energy harvester.

关 键 词：压电材料 刚度 力电性能 特征频率 

分 类 号：TM282[一般工业技术—材料科学与工程]