5W无线充电器用柔性隔磁片的制备及软件仿真研究

发布时间：2018-06-20 06:52

本文选题：无线充电 + 隔磁片　；参考：《电子科技大学》2014年硕士论文

【摘要】：无线充电技术是一种非接触式磁感应或磁谐振技术。它由特斯拉磁感应原理技术整合演变而来,不需要电路连接线,在一定距离范围内实现无线电能的传输。随着智能电子产品的迅猛发展,无线充电技术目前的发展态势相当迅速,全球相继有三大技术联盟及组织成立,且越来越多的厂商开始加入这些无线充电的技术阵营,特别是无线充电联盟(Wireless Power Consortium,简称WPC)利用磁感应原理推出具体的5w范围内的无线充电技术标准Qi。该标准对系统的安全性和稳定性提出了更明确的要求。软磁隔磁材料能够屏蔽近场磁干扰,并可提高无线充电效率被广泛的应用在无线充电系统中,本论文就是对这种软磁屏蔽材料进行研究。1.研究了磁粉心粉末粒度对柔性隔磁材料性能的影响。分析了粒径尺寸的分布影响材料有效磁导率、功率损耗、品质因数Q及材料的频响特性的原因及变化规律。颗粒粉末越细,磁粉心材料的磁导率越低、功率损耗降低、品质因数增大及频响特性更优,反之亦然。2.研究了颗粒粉末的磷化方式与绝缘包覆工艺对柔性隔磁材料的影响。提出了采用预热配合热开水工艺替代丙酮作为磷化稀释剂,节约了成本,且改善了生产环境;研究了绝缘包覆剂的添加量对磁粉心材料的有效磁导率、功率损耗、品质因数Q的影响。3.研究了流延工艺参数及添加剂对磁粉心薄膜材料的影响。通过添加合理的辅助溶剂来提供薄膜的质量,并分析了影响流延薄膜厚度的主要因素。4.研究了热处理工艺对材料制备工艺的影响。分析了热处理温度、保温时间等工艺参数对磁粉心薄膜性能的影响。5.利用CST仿真软件协同ADS软件对无线充电的磁场环境进行仿真模拟,分析柔性隔磁材料及其特性对手机无线充电磁场的影响规律。
[Abstract]:Wireless charging technology is a non-contact magnetic induction or magnetic resonance technology. It is evolved from the integration of Tesla magnetic induction principle technology and does not require circuit connection to realize wireless power transmission within a certain range of distance. With the rapid development of intelligent electronic products, wireless charging technology is developing rapidly. Three major technology alliances and organizations have been established in the world, and more manufacturers begin to join these wireless charging technology camps. In particular, Wireless Power Consortiums (WPC), a wireless charging alliance, uses the principle of magnetic induction to develop a specific wireless charging standard Qiw in the range of 5w. The safety and stability of the system are required more clearly by the standard. Soft magnetic barrier material can shield near field magnetic interference and can improve the efficiency of wireless charging is widely used in wireless charging system, this paper is to study this kind of soft magnetic shielding material. The effect of particle size of magnetic powder core on the properties of flexible magnetic insulation materials was studied. The influence of particle size distribution on the effective permeability, power loss, quality factor Q and the frequency response characteristics of the material were analyzed. The finer the particle powder, the lower the permeability, the lower the power loss, the higher the quality factor and the better the frequency response, and vice versa. The effects of phosphating mode and insulating coating process on flexible magnetic insulation materials were studied. In this paper, it is put forward that using preheating and hot boiling water process to replace acetone as phosphating diluent can save the cost and improve the production environment, and the effective permeability and power loss of the magnetic powder core material caused by the addition of insulating coating agent are studied. The effect of quality factor Q. The effects of casting process parameters and additives on magnetic powder core film materials were studied. The quality of the film was provided by adding reasonable auxiliary solvent, and the main factors affecting the thickness of the film were analyzed. The effect of heat treatment on the preparation of materials was studied. The effects of heat treatment temperature and heat preservation time on the properties of magnetic powder core films were analyzed. CST simulation software and ads software are used to simulate the magnetic field environment of wireless charging. The influence of flexible magnetic insulation material and its characteristics on the wireless charging magnetic field of mobile phone is analyzed.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM910.6;TM27

【参考文献】