智能充电器控制电路.doc

摘 要 电子信息技术的快速发展使得各种各样的电子产品不断涌现，并朝着便携和小型轻量化的趋势发展，这也使得更多的电气化产品采用基于电池的供电系统。目前，较多使用的电池有镍镉、镍氢、铅蓄电池和锂电池，由于它们各自的优缺点使得它们在相当长的时期内将共存发展。由于不同类型的电池的充电特性不同，目前通常对不同类型，甚至不同电压、容量等级的电池使用不同的充电器，这在实际使用中有诸多不便。本设计一种充电器，MAX1898充电芯片、AT89C2051单片机进行了较详细的介绍，来说明智能充电器的控制系统的实现。 关键词: 单片机 ；智能充电器AT89C2051 Abstract Electronic information technology’s fast development causes various electronic products develops toward portable and the small lightweight direction. It also causes the more electrification products to use based on battery’s power supply system. At present, more use of a nickel-cadmium batteries, nickel hydrogen, lithium batteries and lead-acid batteries, as their respective advantages and disadvantages of allowing them for a long period of time will be the development of coexistence. Because the different type battery’s charge characteristic is different, usually to different type, even different voltage, capacity rank battery use different battery charge, but this has many inconvenience in the actual use. This topic design is one kind lithium ion battery intelligent charger which is based on Single Chip, in the design, it has chosen succinctly, the highly effective hardware, the design stable reliable software, explained in detail system’s hardware composition. Including the monolithic integrated circuit electric circuit, the charge control electric circuit, the voltage transformation and the light pair isolating circuit, and to this design –MAX1898 charge chip, at 89C2051 monolithic integrated circuit has carried on the detailed introduction. At this introduction, it illustrates the intelligent charger control system how to achieve. Key words: Single Chip; Intelligent charger; Lithium batteries; AT89C2051 目 录 1 绪论 1 1.1 课题研究的现状、背景及意义 1 1.1.1 国外电池控制系统的研究现状 1 1.1.2 国内电池控制系统的研究现状 1 1.2 本课题研究的目的及意义 2 2 锂电池充放电特性和充电方法的研究 3 2.1 锂电池的现状及发展趋势 3 2.1.1 Li-SO2电池 3 2.1.2 Li-(CFx)n电池 3 2.1.3 Li-SOC12电池 4 2.1.4 Li-MnO2电池 5 2.2 锂电池的原理及特点 6 2.3 锂离子电池的各种充电方式 7 2.3.1.恒流充电方式 7 2