ABSTRACT
Battery equilibrium management is of significance to optimise the overall charging/discharging performance and prolong the battery lifespan. In this paper, a non-dissipative equalisation circuit incorporating MOSFETs and inductors is studied by using switching power supply technology. The proposed circuit is derived from the buck-boost converter. The energy transfer and the flow direction are controlled by adjusting the duty cycle of the corresponding transistors, which are triggered by PWM signal. The results based on MATLAB/Simulink simulation were performed to verify the feasibility and validity of the proposed circuit. The results indicate high balancing current and high balancing speed of the proposed circuit, which is potentially suitable for cell/pack balancing in a battery management system.
