一种基于梯次电池充电末期的自适应柔性充电策略

Adaptive Flexible Charging Strategy Based on End of Echelon Battery Charging

由于梯次电池的衰减性,必然存在充电末期充电时间短,单体电压斜率高,经济性差等问题。为提升经济性,提出了一种自适应柔性充电策略,即在充电末期通过蚁群算法寻优最佳功率控制点,结合目标充电量及充电末期单体电压的目标斜率,通过功率步长调整充电功率的优化策略。相较于以单体电压固定阈值作为功率调整点的充电策略,在同等充电周期内具有充电有效时间更长、单体电压更缓、充电量更多的优势。最后,通过系统试验验证了其优越性和良好效果。

Due to the attenuation of echelon battery,there must be some problems such as short charging time at the end of charging,high voltage slope of single cell and poor economy.In order to improve the economy,an adaptive flexible charging strategy is proposed,which is to optimize the optimal power control point through ant colony algorithm at the end of charging,combine the target charging amount and target slope of single cell voltage at the end of charging,and adjust the charging power by power step.Compared with the charging strategy which uses the fixed threshold of single voltage as the power adjustment point,it has the advantages of longer charging effective time,slower single voltage and more charging volume in the same charging cycle.Finally,the superiority and good effect are verified by the system test.