蓄电池容量检测设计.docx

本科生毕业设计（论文）学院（系）： 电子与电气工程系 专 业： 电气工程及其自动化 学 生： 王志宾 指导教师： 唐晓燕 完成日期 2011 年 5 月本科生毕业设计（论文）基于单片机的蓄电池性能测试电路的设计Test Circuit of Accumulator’s Function Based on MCU总计：毕业设计（论文）27 页表格：0 个插图：18幅本科毕业设计（论文）基于单片机的蓄电池性能测试电路的设计Test Circuit of Accumulator’s Function Based on MCU学院（系）：电子与电气工程系专业：电气工程及其自动化学生姓名：王志宾学号： 097409028指导教师（职称）：唐晓燕（讲师）评阅教师：完成日期：基于单片机的蓄电池性能测试电路的设计电气工程及其自动化专业王志宾[摘 要]阀控铅酸蓄电池作为后备电源已经广泛应用于工业生产，交通、通信和军事领域。如何高效率管理这些蓄电池，提高后备电源系统的可靠性是一个很现实的重要课题。因此，本课题设计一基于单片机的蓄电池性能检测系统。该系统采用精密电阻和电池构成串联电路，用交流注入法对蓄电池注入微弱正弦波信号，通过对输出响应进行一系列的放大、幅相检测、AD转换和采集，然后根据测量到的电压比来推算电池内阻。试验结果表明：该方法能够被有效地用于铅酸电池内阻测量，测量结果稳定有效。[关键词]幅相检测；AD转换；单片机；电池内阻Test Circuit of Accumulator’s Function Based on MCUElectrical Engineering and Automation SpecialtyWANGZhi—binAbstract:Valve control of lead-acid batteries as a backup power supply has been widely used in industrial production, transportation, communications and military areas. How to efficient management these batteries, improve the reliability of backup power system is a very realistic important topic. Therefore, the subject is based on single chip design a battery performance testing system. The system adopts the precise resistance and battery constitute a series circuit, using ac injection method to inject weak battery sine wave signal, a series of output response by the amplification, amplitude and phase detection, AD transform and acquisition, and then based on the measured resistance calculation battery voltage board. Test results show that the method can be used effectively as lead-acid battery resistance measurement, the measured results stable and effective. Key words:Amplitude and phase detection; AD transform; SCM; battery resistance 目录1引言11.1研究背景11.2蓄电池研究现状11.3蓄电池的性能指标21.4蓄电池性能的判断因素32测试方法研究42.1内阻参数的相对性与绝对性42.2蓄电池内阻与容量的关系52.3蓄电池等效电路52.4方案的探讨62.5交流法73硬件电路的设计83.1总体框架83.2主处理器模块103.3探测电路123.4差分放大电路133.4.1 INA321芯片简化图133.4.2 INA2321电路图143.5幅相检测电路143.5.1 AD8302介绍143.5.2 AD8302电路图153.6模数转换模