基于磁耦合共振的无线充电系统研究

发布时间：2018-01-16 02:29

本文关键词：基于磁耦合共振的无线充电系统研究　出处：《电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：无线电能传输技术是当前最活跃的研究方向之一,在小型电子设备、电动交通工具、植入性医疗等方面具有非常广阔的应用前景和发展空间。近几年,无线电能传输技术无论是在创新研究还是在应用推广上都有很大的发展。本文主要内容是磁耦合共振式无线电能传输装置研究以及小功率充电应用,在调研国内外相关文献的基础上,分别用耦合模式理论和电路理论对磁耦合共振式无线电能传输技术的实现原理和传输特性进行分析,然后利用仿真软件HFSS建立磁共振式收发天线模型,对几种传输状态以及各元件参数对传输性能的影响进行仿真分析,在此基础上对无线电能传输收发天线进行改进,设计出平面集成式0.3 mm厚度的紧凑型无线能量收发天线和基于同轴结构的高效收发天线。平面集成式收发天线,尺寸12cm×12cm×0.03 cm,工作频率159 MHz。当传输距离为1 cm时得到的传输效率最大75.8%。当距离为15 cm时传输效率为61%。平面集成式收发天线的特点是传输距离较长、低成本、易集成。同轴结构收发天线,尺寸12 cm×12 cm×1 cm,工作频率15.12 MHz。当传输距离在5 cm以内时,效率在90%以上;距离与谐振线圈直径相等即d=12 cm时,效率为63%;当距离为18 cm,1.5倍直径时,效率为52.48%。同轴结构收发天线的特点是传输效率高,损耗小,而且是距离越近效率越高,若是采用直径更小的同轴电缆,则电路尺寸可进一步缩小。实验测试结果表明,所设计的收发天线有良好的性能。最后完成了磁耦合共振式无线充电整个系统包括无线传能电路、发射电路与接收电路的设计,并通过实验验证,实现对手机无线充电。本研究对于磁耦合共振技术在实际中的应用和设计方法有重要的意义,对改善系统性能、提高传输效率方面也有一定的贡献。
[Abstract]:Wireless transmission technology is one of the most active research directions in current, small electronic devices, electric vehicles, has a very broad application prospects and development of implantable medical and so on. In recent years, wireless power transmission technology has great development both in research and innovation in the application and popularization of the main content of this paper. The magnetic coupling resonance of radio transmission device and small power charging applications, based on the research of related literature at home and abroad, respectively on the magnetic coupling resonance principle and transmission characteristics of wireless power transmission technology is analyzed using coupled mode theory and circuit theory, and then establish the magnetic resonant antenna model using simulation software HFSS and carries on the simulation analysis of the influence of several parameters on the transmission state and transmission performance, on the basis of the radio transmission delivery day The line is improved, the out of plane design integrated 0.3 mm thickness of the compact wireless transceiver antenna and transceiver based on energy efficient antenna coaxial structure. Planar integrated antenna, the size of 12cm * 12cm * 0.03 cm, the working frequency of 159 MHz. when the transmission distance is 1 cm when the transmission efficiency was the biggest when the distance is 75.8%. characteristics 15 cm when the transmission efficiency of 61%. planar integrated antenna is a long transmission distance, low cost, easy integration. Coaxial antenna, the size of 12 cm * 12 cm * 1 cm, the working frequency of 15.12 MHz. when the transmission distance is less than 5 cm, efficiency is more than 90%; and that distance is equal to the diameter of the resonant coil d=12 cm, the efficiency is 63%; when the distance is 18 cm, 1.5 times the diameter, the efficiency for the 52.48%. antenna coaxial structure is characterized by high transmission efficiency, low loss, and is closer to the higher the efficiency, if using coaxial cable diameter smaller, The circuit size can be further reduced. Experimental results show that the antenna design has good performance. Finally the magnetic coupling resonance wireless charging system includes the wireless transmission circuit, the transmitting circuit and the receiving circuit design, and through experimental verification, the mobile phone wireless charging. This research is important significance for the application and design method of coupled magnetic resonance technology in practice, to improve the performance of the system also has a certain contribution to improve the transmission efficiency.

【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】：TM724

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