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编号南京航空航天大学金城学院毕业设计题目基于单片机控制无线充电系统的研究与设计学生姓名学号系部自动化系专业电气工程与自动化班级指导教师二〇一三年五月南京航空航天大学金城学院本科毕业设计（论文）诚信承诺书本人郑重声明：所呈交的毕业设计（论文）（题目：基于单片机控制无线充电系统的研究与设计）是本人在导师的指导下独立进行研究所取得的成果。尽本人所知，除了毕业设计（论文）中特别加以标注引用的内容外，本毕业设计（论文）不包含任何其他个人或集体已经发表或撰写的成果作品。作者签名：2013年5月28日（学号）：毕业设计（论文）报告纸i基于单片机控制无线充电系统的研究与设计摘要无线电力传输是目前非常热门和前沿的一个研究课题，有着非常良好的应用前景。比如无线充电器，给心脏起搏器供电，给高速旋转体的供电。无线电力传输百年前就有所研究，但是鉴于技术的制约，相当长的一段时间内几乎没有应用。影响无线电力传输应用的主要就是输电效率不高、传输距离较短。本文设计了一种基于电磁谐振耦合的无线充电系统，运用了单片机实现智能控制，能识别系统是否空载，在系统空载时自动切断发射线圈的电源。该系统能够在0.5厘米的距离内实现50%的充电效率。本系统设计给两节串联的锂电池供电。无线充电设备和锂电池都是安装在一辆智能小车上面。该充电系统能够自动识别电池电压过低，然后安排充电。充电过程分为三部分：预充电、恒流充电、恒压充电。这种智能充电的方式能够保证电池真正的充满电，并且能够提高电池寿命。关键词：无线电力传输，电磁耦合，单片机，红外传输毕业设计（论文）报告纸iiResearchanddesignofwirelesschargingsystemcontrolledbyMCUAbstractWirelesspowertransmissioniscurrentlyverypopularandcutting-edgeresearchtopicwhichhasaverygoodprospect.Suchaswirelesschargeranditcanprovideenergytothecardiacpacemakerorahighspeedrotationbody.Wirelesspowertransmissionprinciplewasfoundoverahundredyears.Becauseofthescientificandtechnicalreasons,ithasnotbeenapplied.Factorsthataffecttheapplicationofwirelesspowertransmissionislowpowertransmissionefficiencyandtheshorttransmissiondistance.Thisarticledesignedawirelesschargingsystemwhichbasedonelectromagneticresonantcoupling.ThischargingiscontrolledbyMCU.Itisabletoidentifywhetherthesystemisno-load.Whenthereisno-load,thechargingwillautomaticallycutoffthepowersupplyofthetransmittercoil.50%ofthechargingefficiencyofthissystemcanbeachievedwithinadistanceof0.5cm.Thesystemisdesignedtochargethebattery.Wirelesschargingdevicesandlithiumbatteriesareinstalledinasmartcar.Thechargingsystemcanautomaticallyidentifylowbattery,thenmakearrangementsforcharging.Thechargingprocessisdividedintothreeparts:pre-charging,constantcurrentcharging,constantvoltagecharging.Thischargingmethodtoensurethatthebatteryisfullycharged,andtheycanenhancethebatterylife.KeyWords：Wirelesspowertransmission;MCU;Electromagneticcoupling;Infraredtransmission毕业设计（论文）报告纸iii目录摘要.................................................................................................................................................iAbstract................................................................................................................................................ii第一章引言.............................................................................................................................-1-1.1研究背景........................................................................................................................-1-1.2研究前景与意义............................................................................................................-1-1.3无线充电技术分类及国内外现状................................................................................-3-1.3.1无线充电技术的分类...........................................................................................-3-1.3.2无线充电技术的历史及现状.............................................................................-6-1.4本文主要研究内容........................................................................................................-7-第二章无线电力传输原理.........................................................................................................-8-2.1电磁感应原理................................................................................................................-8-2.2基于近场磁感应无线电力传输原理............................................................................-8-2.3基于电磁耦合共振的无线电力传输原理..................................................................-11-第三章影响无线电力传输效率的因素分析...........................................................................-14-3.1近场磁感应无线电力传输系统模型..........................................................................-14-3.2距离与线圈半径对效率的影响..................................................................................-15-3.2.1距离与效率关系.................................................................................................-16-3.2.2线圈半径与效率关系.........................................................................................-17-3.3补偿方式对效率的影响..............................................................................................-17-3.4谐振对效率的影响........................................................................................................-21-3.4.1补偿电容容值对效率的影响.............................................................................-21-3.4.2发射频率对效率的影响.....................................................................................-22-第四章无线充电器硬件设计...................................................................................................-24-毕业设计（论文）报告纸iv4.1需求与技术难点分析..................................................................................................-24-4.2系统框架......................................................................................................................-24-4.3硬件设计......................................................................................................................-25-4.3.1硬件参数配置........................................