无线充电用磁屏蔽材料  

Magnetic shielding material for wireless charging

作　　者：周丽波 梁迪飞[1,2] 李维佳[1,2] 王云[1,2] 袁玉灵 吴潘[1,2] ZHOU Li-bo;LIANG Di-fei;LI Wei-jia;WANG Yun;YUAN Yu-ling;WU-Pan(StateKey Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China;National Engineering Research Center of Electromagnetic Radiation Control Materials,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都611731 [2]电子科技大学国家电磁辐射控制材料工程技术研究中心,四川成都611731

出　　处：《磁性材料及器件》2019年第6期57-63,共7页Journal of Magnetic Materials and Devices

摘　　要：随着近代无线充电技术的兴起,无线充电设备中磁屏蔽材料受到了日益广泛的关注。磁屏蔽材料在无线充电系统中能够增强线圈感应磁场,具有较高的磁性收敛效果;同时屏蔽金属导体对线圈磁场的衰减干扰,防止磁能的损耗,提高充电效率。对MnZn铁氧体、NiZn铁氧体、非晶合金和纳米晶合金四种无线充电磁屏蔽材料进行了分类综述,简单介绍了各类材料的发展历程以及在磁感应式无线充电领域的应用情况。最后比较性能上的差异,提出无线充电磁屏蔽材料发展所面临的问题,分析了该领域未来发展的趋势。With the rise of modern wireless charging technology,magnetic shielding materials in wireless charging equipment have attracted more and more attention.The magnetic shielding material can enhance the coil induced magnetic field in wireless charging system and has a high magnetic convergence effect.Also,it can shield the attenuation and interference of metal conductor to coil magnetic field,prevent the loss of magnetic energy and improve charging efficiency.In this paper,four types of wireless charging magnetic shielding materials,including MnZn ferrite,NiZn ferrite,amorphous alloy and nanocrystalline alloy,are classified and summarized.Finally,the differences in performance are compared,the problems in the development of wireless charging magnetic shielding materials are proposed,and the future development trend in this field is analyzed.

关 键 词：无线充电 磁屏蔽 MNZN铁氧体 NIZN铁氧体 非晶和纳米晶合金 

分 类 号：TM271.2[一般工业技术—材料科学与工程]