从晶体硅太阳电池功率全微分方程出发，结合开路电压和功率随温度、日照变化的实验事实，研究 影响晶体硅太阳电池工作状态的各参量的独立性。从数学上确定出其独立变量为日照强度、电池温度和负载， 并得出了串联内阻是温度的函数的结论。串联内阻的实验数据验证了理论分析结果的正确性。

Based on the crystal silicon solar cells' power complete differential equation, and combined with the experimental facts that the open circuit voltage and power vary along with the cells'temperature and insolation, the independence of the parameters that determine solar cells' operating state is investigated. After a strict mathematic deducing process, it is concluded that the insolation, cells' temperature and load resistance are the independent parameters of crystal silicon solar cells, and that the series resistance is a function of cells' temperature. The series resistance's experimental results show the theoretical analysis's accuracy.