A study of simulation for parameters of equivalent circuit model of battery based on the extended Kalman filtering algorithm

In the process of charging and discharging of the battery,there is a complex internal electrochemical reaction,which is resulting in the state of charge of the battery and the various parameters that are multidimensional nonlinear relationships.Thus,this paper builds the equivalent circuit model which is based on 7-HK-182 lead-acid battery to identify the parameters.On this basis,by using extended Kalman filter(EKF) algorithm and Matlab software real-time simulation on various parameters of SOC of the battery,we verify the real-time and accuracy of EKF algorithm through comparing the simulation with experimental results.