89C51
系 别：自动化系
专 业 班：电气自动化技术0601班 姓 名：陈 琪 学 号：20062822008 指导教师：李川香 段丽娜
2009年5月19日
基于的智能电池充电器的设计
（硬件部分）
基于89C51的智能电池充电器的设计 （硬件部分）
89C51-based smart battery charger
design (Hardware part)
摘 要
目前，较多使用的电池有镍镉、镍氢、铅蓄电池和锂电池。它们的各自特点决定了它们将在相当长的时期内共存发展。由于不同类型电池的充电特性不同，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，但这在实际使用中有诸多不便。所研究课题根据电池两端不同的电压值采取不同的方案进行充电。通过对已有单片机技术的学习，结合课堂的理论知识，完成课题所规定的性能指标从而加强专业知识和专业技能综合应用能力的训练，培养实践动手能力，团队合作和创新精神。
这次设计中，单片机电路主要包括89C51和ADC0809两块芯片，DM74163N用做分频器，74F138SJ用来产生和选择地址。其中，89C51的的晶振频率为11.0592MHz。电路有2个输入输出端口，Analog Voltage Input是作为电池组电压的输入，PWM contraltor是做为电池组控制脉宽的输出。
关键词：89C51 ADC0809 定时器中断 PWM控制技术
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Abstract
At present, There is more use of nickel-cadmium batteries, nickel metal hydride, lead-acid batteries and lithium batteries. Their respective characteristics they will for a long time to co-exist within the development. Because different types of rechargeable batteries of different characteristics, usually of different types, and even different voltage levels of battery capacity to use a different charger, but in practice there are a lot of inconvenience in use.According to research by the battery voltage at both ends of the value of different options to take charge.Single-chip technology has been adopted for the study, combined with theoretical knowledge of the classroom to complete the tasks set forth in the performance indicators in order to enhance professional knowledge and professional skills training competence, ability to train yourself in practice, teamwork and innovation.
The design, the main circuit including the 89C51 single-chip and chip ADC0809 , DM74163N used as a divider, 74F138SJ used to generate and select Address. Of these, 89C51 of the crystal frequency of 11.0592MHz. Circuit has two input and output ports, Analog Voltage Input battery voltage as input, PWM contraltor is the battery pack as the output pulse width control.
Key words: 89C51 ADC0809 timer interrupt PWM control technology
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