摘要:当今化石能源的日益枯竭以及人们对能源需求的不断增加，寻找一种新型洁净的替代能源成为人类面临的一项重要任务。而太阳能作为一种新型的可再生能源以及现代光伏发电技术的快速发展，太阳能将逐渐由现在的补充能源向替代能源过渡。本文设计了一种基于STC89C52单片机的太阳能手机充电系统，系统主要由电源稳压模块、充电控制模块、单片机控制模块和数据采集模块组成。系统采用太阳能电池板将光能转换成电能，使用AD转换器采集充电控制电路中的三点的电压值，供单片机进行分析和计算，计算出控制信号PWM的占空比，从而有效控制电路处于恒压充电或恒流充电状态。与常规充电器相比，太阳能充电器具有明显的优势。
关键词 太阳能电池；手机充电器；AD转换；PWM
Abstract:Today the situation of the fossil energy and the increasing demand for energy , looking for a new clean energy to alternate has become an important task the human must confront . Solar energy as a new type of renewable energy as well as rapid development of photovoltaic technology , will transform supplement energy to alternative energy gradually . This paper presents such a charging systems ,which STC89C52 based solar cell phone , the system mainly consists of power regulator module, the charging control module, single-chip control module and data acquisition module. The System uses solar panels convert light into electric, using the AD converter collected three points of the charge control circuit voltage value , the AD converter's output will be sent to the STC89C52 to analyze and calculate, calculating the PWM duty of the control signal, so that charge the circuit in the constant voltage charge process or constant current charge process. Compared with the conventional charger , solar charger has a distinct superiority.
Keywords Solar cells cell phone charger AD conversion PWM
本论文研究内容主要包含以下几个方面：整体的太阳能手机充电器硬件的设计和调试；太阳能电池转换成电能的稳压处理 ；AD信号的采集；单片机根据采集的信号控制充电过程并决定充电模式。
本论文研究的主要目的和意义：相信大家都有这样的经历，外出旅游或者坐火车时，因为不能找到或者没有220V的市电而无法给手机充电，影响了手机的使用，可能会错过重要的电话或者消息。而本课题正是基于这样的一个出发点考虑，设计介绍了一种智能的手机充电器，利用单片机进行控制，将太阳能经过电路变换成稳定的直流电给手机充电。太阳能手机充电器与常规充电器相比有着明显的优势。
