Abstract: In view of the characteristics of a submarine high-capacity battery,such as the experimentation swatches absence,influence factors legion,and decoupling difficulty,at the same time based on the external characteristic of the battery,an integrated algorithm in which all of the improved back-propagation neural network method,golden cut algorithm,and the linear simulation technology are used is brought forward for the modeling of the submarine battery dynamic process.Simulation experimentation results show that the real-time performance can be fulfilled well,and a comparatively high precision can be met.