PDF(Pubmed)
Abstract：
Investigating the correlation between aging mechanisms and state of charge (SOC) can optimize cycling conditions and prolong the life cycle of lithium-ion batteries (LIBs). A long-term cycle between a certain SOC range is usually employed to study this correlation. However, this method necessitates a lengthy period, running from months to years, prolonging the research duration significantly. The aging mechanisms obtained through this method are a result of the coupling of various SOC levels; the aging mechanisms at a specific SOC level are not accurately decoupled and analyzable. The proposed Zero-sum pulse method, using symmetrical pulses with small SOC amplitude variations on SOC, can explore aging mechanisms of LIBs at a specific SOC level and reduce the time to less than a week, which significantly expedite the research process. The aging mechanisms at 30%, 50%, 70%, and 90% SOC levels are explored to verify the accuracy and timeliness of this method.
摘要：
研究老化机制与充电状态（SOC）之间的相关性可以优化锂离子电池（LIB）的循环条件并延长其寿命。通常采用某个SOC范围之间的长期循环来研究这种相关性。然而,这种方法需要很长的时间，从几个月到几年，显著延长研究时间。通过该方法获得的老化机制是各种SOC水平耦合的结果;特定SOC水平下的老化机制不是精确解耦和可分析的。提出的零和脉冲方法，使用SOC幅度变化较小的对称脉冲，可以探索LIB在特定SOC水平下的老化机制，并将时间减少到不到一周，这大大加快了研究进程。在30％的老化机制，50%,70%,90%的SOC水平,验证了该方法的准确性和时效性。
