Research on balance strategy of Aviation Lithium Battery

Battery energy balance circuit is mainly divided into Buck-Boost circuit and Cuk circuit, in this paper, the charging and discharging model of aviation lithium battery is built based on the principles of two kinds of circuits, the problem of SOC imbalance in the process of charge and discharge of aviation lithium battery is studied. Combined with the characteristics of aviation lithium battery and aviation equipment, and according to the principle of circuit simplification and control algorithm simplification, in this paper, the central threshold method is used to control the charge and discharge of the two equalizing circuits. According to the experimental results, Buck-Boost circuit has simple structure, strong plasticity and Cuk circuit has high conversion efficiency, which determines the objective law of the construction of lithium battery equalization circuit.