According to the mathematic model of photovoltaic cell need to know some specific parameters, for there are certain difficulties analysis of photovoltaic battery, this paper presents a mathematical model using the simplified engineering. Using labVIEW to build the model, verification and analysis, and simulate the change of light intensity and the influence of environment temperature on the output characteristics of photovoltaic cells. The simulation results closer to the actual working characteristics of PV modules, validate the modeling.The effects of light intensity and temperature on the output characteristics of photovoltaic battery test experiments, to verify the correctness of the model.The theoretical and practical significance to study the modeling of photovoltaic array and photovoltaic cells.