锂离子电池搁置特性的探讨

Study on Performance of Lithium Ion Battery Still Placed

锂离子蓄电池具有比能量大、电压高及无记忆效应等特点。通过对锂离子蓄电池搁置特性的研究,将48只锂离子电池分别放置在20℃、10℃、0℃和-10℃的环境条件下,在搁置4个月的过程中,每个月从不同的温度环境下取出3只电池,进行7.5 C放电,结果发现电池在-10℃的环境条件下贮存效果最好,即电池的损失容量最小;并且将高比能量电池、高比功率电池的短期搁置与长期搁置情况进行对比,发现高比能量电池的搁置性能较好。这些搁置试验的研究,为锂离子电池的设计、长期使用和贮存提供了的理论参考价值。

The lithium ion battery has high specific energy density, high voltage and is free of memory effect. During the research on the lithium ion battery still placed, 48 lithium ion batteries are placed at 20℃,10℃,0℃Cand-10℃ environmental conditions respectively. In the process of 4 months, three batteries are taken out from the different temperature every month ,discharged at 7.5 C. The result shown batteries＇ saved effects under --10℃ environmental condition are best , in other words,the loss capacity of the battery is minimum. What＇s more,the still placied performance of high specific energy density battery is better in comparision with the high specific power. These researches about theoretical still placed tests provide theoretical referene for designing, long-term usage and saving of the lithium ion battery.