折弯式压电磁耦合俘能器发电性能试验研究

doi:10.3901/JME.2024.22.457

机械工程学报 ›› 2024, Vol. 60 ›› Issue (22): 457-464.doi: 10.3901/JME.2024.22.457

• 交叉与前沿 • 上一篇

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折弯式压电磁耦合俘能器发电性能试验研究

赵庆玲¹, 刘诗雨¹, 沈辉², 张磊安¹, 张华强¹, 宋汝君¹

1. 山东理工大学机械工程学院淄博 255049;
2. 青岛大学机电工程学院青岛 266071

收稿日期:2024-02-09 修回日期:2024-07-01 出版日期:2024-11-20 发布日期:2025-01-02
作者简介:赵庆玲,女,1998年出生。主要研究方向为振动能量的俘获与应用。E-mail:zqlzhaoqingling@163.com;宋汝君(通信作者),男,1988年出生,博士,副教授,硕士研究生导师。主要研究方向为振动控制与振动能量收集。E-mail:songrujun@sdut.edu.cn
基金资助:
国家自然科学基金(52075305)、山东省自然科学基金(ZR2022ME053)和山东省泰山学者工程专项基金(tsqn202211144)资助项目。

Experimental Study on Power Generation Performance of Bending Piezoelectric-electromagnetic Coupling Energy Harvester

ZHAO Qingling¹, LIU Shiyu¹, SHEN Hui², ZHANG Leian¹, ZHANG Huaqiang¹, SONG Rujun¹

1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255049;
2. School of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071

Received:2024-02-09 Revised:2024-07-01 Online:2024-11-20 Published:2025-01-02
About author:10.3901/JME.2024.22.457

摘要/Abstract

摘要： 折弯梁具有非线性等力学特性，将折弯梁与压电理论结合，能较好地解决单一的线性的俘能系统存在输出功率低、所需激振加速度大以及俘能频带窄等问题，因此，提出一种折弯式压电磁耦合的俘能器装置。装置由三个弯折梁、磁铁和线圈等部分组成。通过搭建试验样机对俘能器的发电性能进行试验，探究各因素对系统输出功率的影响。结果表明：压电片位于弯折下梁时系统输出性能优于位于弯折上梁；装置存在最优匹配电阻值使系统输出功率达到最大，电磁和压电最优电阻分别约为150 Ω和80 kΩ；磁斥力的引入增大了俘能系统的输出电压和输出功率值，有磁斥电磁输出功率比无磁斥增涨了123.1%，有磁斥压电输出功率比无磁斥增涨了41.8%。激振加速度为0.1g时系统输出功率最大值为0.46 mW，0.3g时最大值为1.36 mW，激振加速度增大使系统的输出功率明显增大，并拓宽了系统的俘能频带，提高了俘能器的发电性能。

关键词: 振动能, 折弯式梁, 压电磁耦合, 俘能, 宽频

Abstract: The bending beam has nonlinear and other mechanical properties. Combining the bending beam with piezoelectric theory can better solve the problems of low output power, large required excitation acceleration and narrow energy scavenge frequency band of a single linear energy scavenge system. Therefore, a bending piezoelectric electromagnetic coupling energy harvester is proposed. The device consists of three bending beams, magnets and coils. The power generation performance of the energy harvester is tested by building an experimental prototype to explore the influence of various factors on the system output power. The results show that the output performance of the system is better when the piezoelectric chip is located on the bent lower beam than on the bent upper beam. The optimal matching resistance of the device maximizes the output power of the system. The optimal electromagnetic and piezoelectric resistances are about 150 Ω and 80 kΩ, respectively. The introduction of magnetic repulsion force increases the output voltage and output power of the energy scavenge system. The electromagnetic output power with magnetic repulsion is 123.1% higher than that without magnetic repulsion, and the piezoelectric output power with magnetic repulsion is 41.8% higher than that without magnetic repulsion. The maximum output power of the system is 0.46 mW when the excitation acceleration is 0.1g, and 1.36 mW when the excitation acceleration is 0.3g. The increase of the excitation acceleration significantly increases the output power of the system, broadens the energy scavenge band of the system, and improves the power generation performance of the harvester.

Key words: vibration energy, bent beam, piezoelectric-electromagnetic coupling, energy harvesting, broadband

中图分类号:

TH39
TH113

赵庆玲, 刘诗雨, 沈辉, 张磊安, 张华强, 宋汝君. 折弯式压电磁耦合俘能器发电性能试验研究[J]. 机械工程学报, 2024, 60(22): 457-464.

ZHAO Qingling, LIU Shiyu, SHEN Hui, ZHANG Leian, ZHANG Huaqiang, SONG Rujun. Experimental Study on Power Generation Performance of Bending Piezoelectric-electromagnetic Coupling Energy Harvester[J]. Journal of Mechanical Engineering, 2024, 60(22): 457-464.

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折弯式压电磁耦合俘能器发电性能试验研究

Experimental Study on Power Generation Performance of Bending Piezoelectric-electromagnetic Coupling Energy Harvester

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