基于太阳能的移动电源
天津职业技术师范大学天津职业技术师范大学 Tianjin University of Technology and Education毕毕 业业 设设 计计专专 业:业: 电子科学与技术电子科学与技术 班级学号:班级学号: 0801-300801-30 学生姓名:学生姓名: 姚欢姚欢 指导教师:指导教师: 王利强王利强 副教授副教授 二二一二一二 年年 六六 月月天津职业技术师范大学本科生毕业设计天津职业技术师范大学本科生毕业设计基于太阳能的移动电源基于太阳能的移动电源Mobile supply based on solar energy专业班级:电科专业班级:电科 0801 学生姓名:姚欢学生姓名:姚欢 指导教师:王利强指导教师:王利强 副教授副教授 系系 别:电子工程学院别:电子工程学院2012 年年 6 月月I摘摘 要要太阳能作为一种可再生能源逐步在各个领域得到广泛应用。随着光电转换效率的提高,体积较小的一块太阳能电池板所能提供的电压和电流完全可以满足对普通的电压幅值较小的用电器进行充电,而且太阳能电池板可以工作在多种环境下,只要接受到的太阳光足够的强烈就可以满足光电转换的需求,同时太阳能电池板提供的是直流电源,相比使用交流电源充电时更加安全可靠。所以,本设计旨在利用太阳能的储能特点,结合电路的运用,制作出简易的太阳能移动电源。本设计制作的移动电源,通过太阳能电池板,将太阳能输入的光能转化为电能,再利用 MC34063 芯片实现 DC/DC 降压,将由太阳能转化成的电能经过电路变换为稳定直流电给用电器充电,并采用 ADC0809 芯片进行数模转换,将太阳能输入的模拟信号转化为数字信号,传递给 AT89S52 单片机,通过程序的控制,让充电的电压和电流显示在液晶屏上,并能在电池充电完成后自动停止充电。再运用 7812 和7805 芯片将太阳能输入的电压幅值降至 5V 左右,为单片机供电。关键词:关键词:太阳能移动电源;数模转换器 ADC0809;AT89S52单片机;降压模块IIABSTRACTSolar energy as one kind of renewable energy has been gradually widely used in various fields. With improvement of photoelectric conversion efficiency, even a small piece of solar panels can completely provide enough voltage and current that satisfies the charging of appliances which use lower voltage than normal ones. Furthermore, solar panels can work in a variety of circumstances, as long as the light of the sun accepted is strong enough to meet the conditions of the photoelectric conversion. Solar panels offering dc power, meanwhile, has more safety and reliability compared with the ac power charge. So, the aims of this design is using solar energy, combined the utilization of circuit, to make a simple solar mobile power.The design of production of portable power source, through the solar panels, converts input solar energy into electricity, then use MC34063 chip to complete DC/DC voltage reduction. The electrical energy changed from solar energy is stabilized to the DC power to charge appliances through the circuit. Using ADC0809 chip analog-to- digital conversion, the input analog signal of solar energy will be transformed into digital signal, and be sent to the AT89S52 chip. The charging voltage and current will display on the LCD screen by program control and automatically stop after the battery is full. At the same time, the chip 7812 and 7805 make the voltage of solar input dropping to around 5V to supply the SCM.Key Words:solar mobile power; D/A conversion ADC0809; AT89S52 SCM; step-down module目 录1 引言.11.1 太阳能电池工作原理.11.2 设计内容及思路.12 设计方案及原理.33 硬件设计.43.1 单片机供电电路.43.1.1 电源稳压器.43.1.2 电路设计.53.2 基于 AT89S52 单片机的液晶显示控制电路.53.2.1 AT89S52 单片机.53.2.2 12864 显示屏.63.2.3 电路设计.73.3 数模转换电路.83.3.1 ADC0809 芯片 .83.3.2 74HC74 芯片.123.3.3 电路设计.123.4 DC/DC 降压模块.133.4.1 MC34063 芯片.133.4.2 电路设计.143.5 继电器控制模块.164 软件设计.174.1 系统整体程序设计.174.2 电路启动初始化.