手机无线充电器设计 毕业论文.doc

毕 业 设 计 手机无线充电器设计 学生姓名： 专业班级： 电气工程及其自动化 指导教师： 学 院：  手机无线充电器设计 摘 要 随着人类社会的不断发展，科技不断进步，智能手机得以普及，给人们带来了前所未有的科技体验，智能手机耗电快、电池续航短、充电频繁带来的接口损坏以及充电宝携带不便等问题也让手机无线充电器迎来发展的契机。基于此，本次毕业设计将设计一个手机无线充电器。提供更好的生活方式。 本文将设计一个微距手机无线充电器，充电距离只有几厘米，或者通过接触进行充电，可对一般手机锂电池充电，充电定压不会不超过5V。无线充电器的基本原理根本上还是电磁感应原理，并不是什么新兴技术。本文的主要内容是设计充电器的电路，元器件的选择。无线充电器的电路部分的设计主要分为电能发射部分、电能接收转换部分、充电部分。若电源为交流电，首先经过整流电路整流、滤波，在高频震荡电路产生高频振荡，经过功率放大电路，通过线圈L1发射出去，线圈L2接收到来自L1辐射的电能，同样经过整流滤波以后，由一个纯控制电路来控制，给电池充电。这就是整个充电器的设计方案。 本文将设计的无线充电器充电距离为微距，甚至需要通过接触进行充电，充电容量针对一般手机锂电池。整体电路的设计秉承分块设计，功能集中体现的思想：分成几个电路模块来设计，最终结合在一起实现无线充电的功能。电路设计将按现在手机无线充电器的一贯设计方式。 关键词 无线充电 电磁感应 互感 微距  Mobile Wireless charger design Abstract With the continuous development of human society, science and technology progress, the smart phone has gained popularity, has provided people with unprecedented experience science and technology, intelligent mobile phone power fast charging, battery life is short, frequent damage interface and charging treasure carry inconvenience and other issues also makes wireless charger for mobile phone development opportunities. Based on this, this graduation design will design a mobile wireless charger. Provide a better way of life. This paper will design a macro cell phone charger, wireless charging distance is only a few centimeters, or through contact, but for the average cell phone lithium battery, charging constant pressure may be no more than 5 v. The basic principle of wireless charger fundamentally or electromagnetic induction principle, and not what emerging technologies. The main content of this paper is to design a charger circuit, the choice of components. Wireless charger circuit part of the design is mainly divided into electricity transmitting parts, power receiving transformation, charging part. If the power supply for alternating current (ac), first through the rectifier circuit rectifier, filter, high-frequency oscillation in the high frequency oscillation circuit, a powe