压电振动能量俘获的研究进展

Research Progress of Energy Harvesting Based on Piezoelectric Effect

研究了压电陶瓷材料的相关参数以及不同压电单元结构的差异性。在分析压电效应原理的基础上对比说明了对环境中振动能量的收集方法。阐述了悬臂梁式、钹式、多层堆叠式压电换能结构的适用场景,并提出了机械结构的改进方向;详细总结了控制电路的搭建及改进,包括对整流、稳压电路工作原理的分析,得出在不同能量收集电路适用场景的搭建方式;对于能量收集电路转化的电能储存介质进行了深入研究,说明了超级电容应用于压电振动能量俘获的合理性,并且对基于压电能量收集的应用进行了分类,详细探讨了压电能量收集方法。根据实验结果提出了一种新型压电振动能量换能器,即踩踏式压电俘能器。

The relevant parameters of piezoelectric ceramic materials and the differences of different piezoelectric unit structures are studied.On the basis of analyzing the principle of piezoelectric effect,the methods of collecting vibration energy in the environment are compared and explained.The applicable scenarios of cantilever beam,cymbal and multilayer stacked piezoelectric energy exchange structures are described,and the improvement direction of mechanical structure is puts forward;the construction and improvement of the control circuit are summarized in detail,including the analysis of the working principle of the rectifier circuit and the voltage regulator circuit,the construction methods in different scenarios of energy collection circuit are obtained,the in-depth study of the energy collection circuit transformed electric energy storage medium is carried out to illustrate the rationality of the application of supercapacitor to the energy capture of piezoelectric vibration,the previous applications based on piezoelectric energy collection are classified,and the method of piezoelectric energy harvesting is discussed in detail.Based on the experimental results,a new piezoelectric vibration energy transducer is proposed,namely trampled piezoelectric energy harvester.