Controlling strategy of batteries imbalance based on the SOC and voltage

This paper analyzed several common methods of calculating the battery´s State of Charge(SOC), such as the Open-circuit voltage method, Ampere time method, Neural network method. And this paper puts emphasis on the improving Kalman filter. Then a controlling strategy of batteries imbalance that based on the battery´s SOC and voltage is explored. The controlling strategy is effective and feasible through the simulation in Matlab 2009bSimulink. At the end of this paper, two different imbalance strategies is analyzed which are Dynamic imbalance and Static imbalance. And a method which can remove the fault battery is proposed through adding auxiliary switch.