Battery Equalization Control Strategy Based on Fuzzy Control

Abstract

With the pollution of the environment and the shortage of energy, electric vehicles have been widely concerned in the world. Power battery is the most important energy storage element in electric vehicle. In the process of the use of power batteries, parameters such as the voltage and capacity between the batteries are different. The battery is prone to overcharging and over-discharging, which seriously affects the cycle life of the battery. Therefore, it is necessary to design a battery equalization system to balance the parameters between batteries. Based on fuzzy control, this paper designs a battery equalization system which can automatically adjust the balance current according to the state of the batteries and uses the Simulink module in MATLAB to simulate the system. The experimental results show that the system can effectively adjust the battery equalization current which fully meets the design requirements.