汽车动力铅酸电池的充放电特性及均衡管理技术的研究

A Study on Charge/Discharge Characteristic and the Equalization Technique of Electric Vehicle Lead-acid Battery Pack

动力电池组中单体电池间的差异使之具有不同的充放电特性,电池组在充放电循环过程中又增加了单体电池的不一致性,导致某些单体电池过充过放电现象的发生,使得整个电池组的性能及使用寿命下降。所以为了延长电池组的使用寿命,需对电池组进行均衡充放电。

Differences in cell chemistry lead to different charge and discharge characteristic. The unbalance among cells will be amplified through repeatedly charging and discharging processes. Excessively charge and discharge concerns the operation efficiency and lifetime of the battery pack. In order to prolong battery pack life , individual cells need to be maintained at an equalized level.