Comparative analysis of energy harvesting by magnetoelectric components in a simulated biological environment

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-02-15 DOI:10.1016/j.ijmecsci.2025.110042

Zhuang Ren , Changyi Liu , Minghe Li , Wenwei Ge , Liming Zhou , Hongwei Zhao , Lihua Tang , Luquan Ren

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引用次数: 0

Abstract

Implantable micro-electro-mechanical devices represent the most promising wearable technology for accurate and rapid monitoring of physiological parameters, as well as for delivering electrical stimulation to enhance therapeutic outcomes. However, reliance on battery power poses significant challenges, including medical risks associated with multiple surgeries for battery replacement and potential health threats from chemical leakage, which can also lead to environmental pollution. To address the demand for wireless energy supply in low-power applications, this paper proposes a wireless energy transmission technology based on the magneto-electromechanical effect (MME). By utilizing magnetostrictive and piezoelectric materials, the magnetoelectric energy harvesting component efficiently converts external magnetic field energy into electrical energy. Subsequent power management circuits enable the effective powering of MEMS devices. An experimental test system for the magnetoelectric energy harvesting component was developed. Comparative studies revealed that applying a magnetic field along the length of the components, using high-performance PMN-PT piezoelectric materials, and employing rigid packaging methods achieve the most efficient magnetic field-vibration dual-mode energy harvesting. A self-fixed high-performance magnetoelectric energy harvesting structure was then proposed, and its magnetoelectric energy conversion efficiency and power density were evaluated under simulated implantation conditions through simulation and experimentation. The results demonstrated that, under an excitation of 5 Oe AC magnetic field, a maximum power density of 345.1 μW/cm³ could be achieved with an external resistance of 200 kΩ. By leveraging the electric energy generated by the device in conjunction with a fundamental power management circuit, this research scheme successfully illuminates an Led lamps and provides power to a low-power thermometer. A key highlight of this study is the comparative analysis of various factors influencing the performance of magnetoelectric energy harvesting components. Additionally, a reliable packaging scheme and structure for use as an implantable device has been proposed, which establishes a solid foundation for future optimization of device performance.

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模拟生物环境下磁电元件能量收集的对比分析

植入式微机电设备代表了最具前景的可穿戴技术，用于准确和快速监测生理参数，以及提供电刺激以提高治疗效果。然而，对电池供电的依赖带来了重大挑战，包括与更换电池的多次手术相关的医疗风险，以及化学品泄漏带来的潜在健康威胁，这还可能导致环境污染。针对低功耗应用对无线能量供应的需求，提出了一种基于磁机电效应（MME）的无线能量传输技术。磁电能量收集组件利用磁致伸缩和压电材料，有效地将外部磁场能量转换为电能。后续的电源管理电路使MEMS器件能够有效地供电。研制了一套磁电能量收集部件的实验测试系统。对比研究表明，沿组件长度方向施加磁场，采用高性能PMN-PT压电材料，并采用刚性封装方法，可以实现最有效的磁场振动双模能量收集。提出了一种自固定的高性能磁电能量收集结构，并通过仿真和实验对其在模拟注入条件下的磁电能量转换效率和功率密度进行了评价。结果表明，在5 Oe交流磁场激励下，外阻为200 kΩ时，最大功率密度可达345.1 μW/cm³。通过利用该设备产生的电能与基本的电源管理电路相结合，该研究方案成功地照亮了Led灯，并为低功耗温度计提供了电力。本研究的一个重点是对影响磁电能量收集组件性能的各种因素进行了比较分析。此外，还提出了一种可靠的可植入器件封装方案和结构，为未来器件性能的优化奠定了坚实的基础。

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来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.