Modeling and Simulation of a New Ternary Lithium Battery Based on the 2th-Order Equivalent Circuit Model

Power lithium battery modeling is the foundation of power battery research. To establish and select appropriate and accrrate battery model are vital during the development of BMS, Based on the analysis of the modeling method of a new ternary Lithiumion power battery, a 2th-order RC model is established. Then, the genetic algorithm is utilized to identify the circuit parameters through constant current pulse experiment. The simulation results show that the proposed RC model is effective, which can be used to estimate SOC.