基于磁性织物的电磁发电机的制备及性能研究  

Preparation and properties of electromagnetic generator based on magnetic fabric

作　　者：张舒畅 杨佳宇 周邦泽 王芮杰 许福军[1] ZHANG Shuchang;YANG Jiayu;ZHOU Bangze;WANG Ruijie;XU Fujun(College of Textiles,Donghua University,Shanghai,China)

机构地区：[1]东华大学纺织学院,上海

出　　处：《东华大学学报（自然科学版）》2024年第4期1-8,F0003,共9页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金面上项目(52273054)。

摘　　要：为了克服电磁发电机中磁性部件刚性大、磁性微粒负载量低的问题,选用钕铁硼磁粉为磁性材料,纬编空心织带为柔性基材,以及水性聚氨酯为封装层,成功制备了磁性纱线,并进一步织造成磁性织物。基于磁性织物和导电线圈制备磁电式发电系统和磁电式发电衣物,并对其电输出性能进行测试。研究结果表明:磁性纱线的磁性微粒负载量高达182.80mg/cm,而磁性织物的磁感应强度则达到38mT;此外,通过增加磁性微粒含量、增加导电线圈匝数、提高相对移动速度以及减小垂直工作距离均能有效提升磁电式发电系统的电输出性能;磁电式发电衣物产生的电压和电流可分别达到2.42V和6.26mA,最大输出功率密度达439.94mW/m^(2)。由此可知,基于磁性织物的电磁发电机展现出了在可穿戴自供电设备领域的巨大应用潜力。To overcome the defects of large rigidity and the low load of magnetic particles in the magnetic component of an electromagnetic generator,Nd2Fe14B magnetic powder was used as the magnetic material,weft-knitted hollow webbing as the flexible matrix,and waterborne polyurethane as the packaging layer to prepare magnetic yarns,which were then woven into magnetic fabrics.A magnetoelectric generation system and magnetoelectric clothing generator based on magnetic fabric and a conductive coil were prepared,and their electrical output performance was tested.The results show that the load of magnetic particles in magnetic yarn is up to 182.80 mg/cm,and the magnetic intensity of the magnetic fabric reaches 38 mT.The electrical output performance of the magnetoelectric generation system improves with increasing the content of magnetic particles,the number of turns of the conductive coil,the speed of relative movement,and reducing the vertical working distance.The voltage and current generated by the magnetoelectric clothing generator reach 2.42 V and 6.26 mA respectively,and the maximum output power density can reach 439.94 mW/m^(2).This electromagnetic generator based on magnetic fabric is expected to be applied in the field of wearable self-powered devices.

关 键 词：电磁发电机 电磁感应效应 磁性织物 磁性纱线 钕铁硼磁粉 

分 类 号：TM919[电气工程—电力电子与电力传动]