Abstract：Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.
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2015, Vol. 30 
