电动汽车用锂离子动力电池低温性能研究

摘要

Lost of tests show that the low-temperature capacity of parts of lithium ion batteries is not up to the QC/T 743-2006 requirement of -20℃ discharge capacity not less than 70% of its rated value. In this raper, the main influence factors of battery capacity at low temperatule are analyzed and the improvement measures are put forward and the results are good.%大量试验表明,部分蓄电池的低温容量达不到标准QC/T743-2006《电动汽车用锂离子蓄电池》中对-20℃放电容量不低于额定值70%的要求。本文对影响蓄电池低温容量的主要因素进行分析,并提出改进措施,取得较好的效果。