Research on Optimized Balancing Control System for LiFePO_4 Battery Stacks

An improved method of balancing circuit is presented considering the problem of balancing speed slow and high losses in Buck-Boost circuit for serially connected battery stack. Different balancing schemes are designed based on Li Fe PO4 battery stack in laboratory. The improved scheme control is integrated, focused on the effect on the improvement scheme to balancing speed and loss based on the battery practical model.The simulation and experiment results show that the optimized balancing control system decrease the balancing time and reduce the loss.