层合磁电能量采集器的研究进展

Research Progress on Laminated Magnetoelectric Energy Harvesters

层合磁电(ME)能量采集器具有微型化、柔性化和功能多样化等优点,在植入医疗、物联网(IoT)和微机电系统(MEMS)等低功耗设备的自供电监测中具有广阔的应用前景。评述了该采集器的最新研究进展,介绍了其磁-机-电耦合能量转换机理,梳理了各种高频、低频磁能采集器和低频混合能采集器的类型与结构特点,综合比较分析了器件性能,指出高频磁能采集器在植入设备无线供电医疗诊治中的潜在优点和低频采集器在载流IoT设备自供电传感监测中的显著优势。最后总结了该采集技术目前存在的问题和未来发展方向。

Laminated magnetoelectric(ME) energy harvesters,with the advantages of miniaturization,flexibility,and diversified functions,have wide application prospects in self-powered monitoring of low-power devices,such as implanted medicine,Internet of Things(IoT),and micro-electromechanical systems(MEMS).The latest research progress in harvesters is reviewed,introducing their magneto-mechano-electric(MME) coupled energy conversion mechanisms.The types and structural features of various high-and low-frequency magnetic energy harvesters and low-frequency hybrid energy harvesters are examined,and their performances are comprehensively compared and analyzed.The potential advantages of high-frequency magnetic energy harvesters in wirelessly powered medical diagnosis and treatment of implanted devices are highlighted.Further,the significant advantages of low-frequency harvesters in self-powered sensing and monitoring of current-carrying IoT devices are indicated.Finally,existing problems and future development directions for harvesting technology are summarized.