The small power of solar power control system is introduced for automatic meteorological station. On the basis of detecting of battery and solar characteristics,the system can adjust the charging voltage and current to de-tecting the optimum charging strategy to make full use of the solar energy instantly. At the same time it has the abili-ty to power detection, information storage and processing, real time monitoring, display and quick charging for lithium polymer battery,etc. The paper analyzes the system structure,work principle and work efficiency,the experi-mental results show that the highest power generation efficiency reaches up to 95%. The system can satisfy the de-mand of automatic meterological station.%介绍了供自动气象站用的小功率太阳能电源控制系统，能够在检测电池及太阳能特性的基础上，及时调整充电电压及电流来确定优化的充电策略，以充分利用太阳能。同时系统具有信息存储、实时监测和显示等特点，实现锂电池的快速充电。论文分析了系统的构成、工作原理和工作效率，实验表明，其发电量的利用效率最高可达95%，系统能够满足自动气象站的用电需求。
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