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毕业论文:智能充电器毕业设计.doc

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毕业论文:智能充电器毕业设计.doc

ORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHF1ELEC下载需知SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTSELECTIONPARBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBAGRAPHFOLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSE11111111111111111111111111111111LECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACI2222222222222222222222NGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINE★本站上传的文档资源均来自互联网,以分享为目的,为有需要者提供学习与参考,版权为原作者所有,若侵犯到原作者的权益,请提出指正,及时与网站客服联系,并提供必要的证据,如属实,网站会在第一时间进行处理,立即删除相应下载链接页面并将文档删除。SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTSELECTIONPARBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBAGRAPHFOLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSE11111111111111111111111111111111LECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACI2222222222222222222222NGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINES★本站上传的文档,在文档排版上进行过整理,并未对内容进行增加或删除,因此,本站并不保证文档质量,因此下载之前,务必先预览一番,因为预览与下载的内容完全一样,所以如果发现内容有问题,请不要下载。ELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTSELECTIONPARBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBAGRAPHFOLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSE11111111111111111111111111111111LECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACI2222222222222222222222NGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLIN★下载后的WORD文档均可进行复制、编辑,没有密码保护,PDF格式均可转换成WORD,PPT文档可直接进行修改。因上传需要对文档进行转换,转换过程中有可能不能正常阅读或是下载后不能编辑,遇到这种问题,可以留言,留下邮箱地址,我们会把原始文档发送到你的邮箱。ELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTSELECTIONPARBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBAGRAPHFOLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSE11111111111111111111111111111111LECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACI2222222222222222222222NGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCORMATLINESPACINGLINESTOPOINTSSELECTIONPARAGRAPHFORMATLINESPACINGLINORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHF2前言随着越来越多的手持式电器的出现,对高性能、小尺寸、重量轻的电池充电器的需求也越来越大。电池技术的持续进步也要求更复杂的充电算法以实现快速、安全的充电。因此需要对充电过程进行更精确的监控,以缩短充电时间、达到最大的电池容量,并防止电池损坏。AVR已经在竞争中领先了一步,被证明是下一代充电器的完美控制芯片。ATMELAVR微处理器是当前市场上能够以单片方式提供FLASH、EEPROM和10位ADC的最高效的8位RISC微处理器。由于程序存储器为FLASH,因此可以不用象MASKROM一样,有几个软件版本就库存几种型号。FLASH可以在发货之前再进行编程,或是在PCB贴装之后再通过ISP进行编程,从而允许在最后一分钟进行软件更新。EEPROM可用于保存标定系数和电池特性参数,如保存充电记录以提高实际使用的电池容量。10位A/D转换器可以提供足够的测量精度,使得充好后的容量更接近其最大容量。而其他方案为了达到此目的,可能需要外部的ADC,不但占用PCB空间,也提高了系统成本。AVR是目前唯一的针对像“C”这样的高级语言而设计的8位微处理器。C代码似的设计很容易进行调整以适合当前和未来的电池,而本次智能型充电器显示程序的编写则就是用C语言写的。ORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELCTIONPARAGRAPHFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHF3第一章概述第一节绪论111课题背景如今,随着越来越多的手持式电器的出现,对高性能、小尺寸、重量轻的电池充电器的需求也越来越大。电池技术的持续进步也要求更复杂的充电算法以实现快速、安全的充电。因此需要对充电过程进行更精确的监控,以缩短充电时间、达到最大的电池容量,并防止电池损坏。与此同时,对充电电池的性能和工作寿命的要求也不断地提高。从20世纪60年代的商用镍镉和密封铅酸电池到近几年的镍氢和锂离子技术,可充电电池容量和性能得到了飞速的发展。目前各种电器使用的充电电池主要有镍镉电池(NICD)、镍氢电池(NIMH)、锂电池(LIION)和密封铅酸电池(SLA)四种类型。电池充电是通过逆向化学反应将能量存储到化学系统里实现的。由于使用的化学物质的不同,电池有自己的特性。设计充电器时要仔细了解这些特性以防止过度充电而损坏电。目前,市场上卖得最多的是旅行充电器,但是严格从充电电路上分析,只有很少部分充电器才能真正意义上被称为智能充电器,随着越来越多的手持式电器的出现,对高性能、小尺寸、轻重量的电池充电器的需求也越来越大。电池技术的持续进步也要求更复杂的充电算法以实现快速、安全地充电,因此,需要对充电过程进行更精确地监控例如对充、放电电流、充电电压、温度等的监控,以缩短充电时间,达到最大的电池容量,并防止电池损坏。因此,智能型充电电路通常包括了恒流/恒压控制环路、电池电压监测电路、电池温度检测电路、外部显示电路LED或LCD显示等基本单元。其框图如下ORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOCTIONPARAGRAPHFORMSELECTIONPARAGRAPHFORMAAAAAAAAAAAAAAAAAAAAAAAAAAAAATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTSELECTIONPARAGRAPHFORMATLINESPACINGLINESTOPOINTS2SELECTIONPARAGRAPHFORMATLINE

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