Aiming at the inaccuracy problem of state-of-charge(SOC) estimation under the complex conditions, an SOC estimation information fusion framework and a multi-model switch estimation(MMSE) algorithm based on the information fusion technology are proposed for LiFePO4 high-power batteries. This algorithm carries out the feature extraction and the pattern classification of the charge and discharge processes, and then re-optimizes the estimation model according to the different patterns. The MMSE algorithm switch...