说明：  首先，对太阳能光伏电池的基本原理和I-V、P-V特性进行分析。其次，建立电池的等效电路并初步设计仿真模型。
(First, the basic principle and IV, PV characteristics of solar photovoltaic cells for analysis. Secondly, the establishment of the equivalent circuit of the battery and the preliminary design of the simulation model.)