无线充电器的研制

无线充电器的研制(任务书,论文9000字)
摘  要
无线充电技术是一种与传统充电技术有着很大区别的新兴技术，因其对传统充电技术的便利性，实用性，美观性，环保性的优势，它具有很大的发展空间。在未来，随着无线充电技术充电效率的提高，充电距离的增大，充电便利性，安全性的提高，充电设备的小型化等，无线充电技术将会日臻完善，最终成为主导未来充电产品与设备的主流技术。   
本文使用555定时芯片产生一个驱动PWM波，控制一个由IRF460组成的单端变电路，产生高频电流通过发送线圈，在接收端，接收线圈靠近发射线圈，由于电磁感应定律产生感应电动势，经过全桥整流电路，将交流转换为直流，在经过TL431稳压电路为负载充电，完成无接触充电过程。
实验结果表明，该方案可以在最大15mm的距离内对一般手机设备进行充电，在3mm以内可以达到输出电压5v电流500mA，基本达到了设计的要求，故该方案基本符合设计要求。
关键词：  无线充电 QI  电磁感应

Development of wireless charger
Abstract
Wireless charging technology is a kind of emerging technology with the traditional charging technology is very different from its traditional charging technology for the convenience, practicality, aesthetics, environmental protection advantages, it has a lot of room for development. In the future, with the charging efficiency of wireless charging technology, charging distance increases, charging convenience, improve security, miniaturization of charging equipment, wireless charging technology will be perfect, and ultimately become the leading future charge products and Equipment mainstream technology.

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In this paper, a 555 timing chip is used to generate a PWM wave to control a single-ended circuit composed of IRF460, which generates high-frequency current through the transmission coil. At the receiving end, the receiving coil is close to the transmitting coil, and the induced electromotive force is generated by the electromagnetic induction law. Bridge rectifier circuit, the AC is converted to DC, after the TL431 regulator circuit for the load charge,complete the contactless charging process.
Experimental results show that the program can be in the maximum distance of 15mm on the general mobile phone equipment to charge, within 3mm basically reached the design requirements, so the program basically meet the design requirements.
Keywords: Wireless charging;Qi;electromagnetic induction
 

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目  录
摘要    I
Abstract    II
目录    III
第一章绪论    1
1.1引言    1
1.2课题来源及研究内容    1
1.3国内外的研究现状    2
1.3.1 国外研究现状    2
1.3.2 国内研究现状    4
1.4本文所做的工作    4
第二章无线充电技术方案    6
2.1无线充电技术    6
2.2 QI标准    9
2.3线圈电计感以及互感计算    10
2.3.1圆形线圈电感及互感计算    10
2.3.2耦合线圈设计    11
2.4本章小结    13
第三章无线充电器各模块设计    14

3.1发射端电路结构图    14
3.1.1高频逆变电路    14
3.1.3发射端电路图设计    20
3.2 接收端电路结构图    23
3.2.1全桥整流电路    23
3.2.2稳压放大电路    25
3.2.3接收端电路图    25
3.3原件清单    26
3.4 PCB绘制    27
3.5结果测试    27
3.6 本章小结    30
第四章 总结和展望    31
4.1 总结评价    31
4.展望    31
参考文献    32
致  谢    34 [资料来源：http://doc163.com]