数字化快速充电系统设计的毕设论文.doc

本科毕业设计（论文） 题目：数字化快速充电系统设计 院 （系）： 专 业： 班 级： 学 生： 学 号： 指导教师： 2012年 06 月数字化快速充电系统设计 摘 要 随着智能电池在国内的日益普及,与之配套的智能充电器也已经成为国内电源行业研究的新热点,其技术生命力和应用前景将非常广阔.目前,市场上充电器大都采用固定模式对电池进行充电,缺乏自适应能力,不能实时控制充电状态,经常出现电池充电过度、充电不足或电池过热等诸多问题,大大缩短了电池的使用寿命。 本文在调查国内外快速充电技术发展现状的基础上，从智能充电器的市场需求开始，对数字化电池从理论上做了充分的分析，并设计出一种能给多种规格、型号电池进行充电的数字化快速充电系统。主要设计工作包括：设计了开关电源，实现了220V市电转换为25V恒压输出；设计了充电电路，实现DC-DC变换；设计了单片机控制电路，实现了充电电压电流的的检测、充电过程的控制、状态的监测、显示等功能，实现对锂离子、镍镉、镍氢电池的快速充电。 关键词：快速充电；开关电源；控制电路 Design of digital rapid charging system Abstract With the growing popularity of smart battery in the country, accompanying smart chargerhas become the new hot spot in the domestic power industry, its vitality and prospects will be very broad. At present, most of the fixed mode the battery charger on the market charging, the lack of adaptive capacity, charge status can not be real-time control, often battery overcharging, charging or battery overheating, greatly reducing battery life. Fast charging basis of the status of technical development in the survey at home and abroad market demand from the smart charger, digital battery do a full analysis of the theory, and design a give a variety of specifications, models of battery chargethe digitization fast charging system. The main design work include: design of a switching power supply, 220V electricity converted to 25V constant voltage output; charging circuit is designed to achieve the DC-DC converter; designed a single-chip control circuit, the charging voltage and current detection, the charging process control, status monitoring, display and other functions, to achieve fast charging lithium-ion, nickel-cadmium, nickel metal hydride batteries. Key words : fast charge ; switching power supply ; control circuit 目录 中文摘要 I 英文摘要 II 1 绪论 1 1.1题目背景 1 1.2研究意义 1 1.3国内外发展情况 2 1.4 课题主要研究内容 2 2 数字化快速充电器理论分析 4 2.1电池的充电特性分析 4 2.2充电模式 5 2.2.1