一种新型空间锂电池快速充电方法

Novel Space Li-ion Battery Fast Charge Strategy

为克服传统大功率微波遥感类卫星"恒流转恒压"策略单一、充电时间漫长等缺点,文章基于马斯三定律提出了一种旨在去极化、加快充电进程的新型空间锂电池快速充电策略,即在一个充电周期内,采用多阶分段恒流充电并加入固定门限的短时放电,该方法可提高锂电池可允许充电电流并且不降低电池循环寿命。在MATLAB/SIMULINK软件中搭建基于太阳电池阵顺序开关分流的一次母线电压不调节电源系统仿真模型,并进行了实例仿真与对比分析。结果表明,采用快速充电策略可节省充电时间56%以上,并且可有效消除充电极化。文章的研究结果可为未来在轨对锂电池进行多模式充电控制提供新的思路。

Constant current-constant voltage charging strategy for Li-ion battery is adopted in tra ditional high-power microwave remote sensing satellites, which brings forth serious charging po- larization and long charging time. To overcome the above weaknesses and meet battery fast charge needs, novel space Li-ion battery fast charge strategy is presented based on Mas Laws, which adopted multi-step constant current charging and fixed limit discharging in one charging cy cle. The strategy possesses advantages of de-polarization for charging voltage, raising acceptable charging current and no-intervening battery cycle life. Model of S3R （sequential switching shunt regulator） unregulated bus power system is built in MATLAB/SIMULINK and simulations are conducted. The results show that using above fast charge strategy could save over 56% charging time, as well as avoiding charging polarization. New in-orbit charging ideas for future space Li-ion battery can be obtained from the paper.