A new estimation method of battery SOC based on Kalman filter

SOC is a main parameter for battery performance,and the exactly estimation of SOC can prevent battery over-charge or over-discharge,and extend battery life.The several existing estimation methods were analyzed in this paper,a battery model based on Kalman filter was set up,and the SOC estimation of minimum mean square de-viation was realized.The software flow and test result prove the method is feasible.