蓄电池荷电状态判别方法的探讨

Study on the discriminance of battery charged state

在蓄电池的使用和研究过程中,其荷电状态的准确判断已经变得越来越重要。特别是在快速充电技术的研究中,任意状态下,蓄电池荷电状态的准确判断,是决定蓄电池的初始充电电流和充电时间的前提,是实现快速充电的关键技术。目前较多用于判断蓄电池荷电状态的参数有:电解液密度、放电电压、充电电压、电池内电阻、电压恢复时间、累积放电电量等。用于蓄电池荷电状态的判别方法也很多,但较实用的判别方法还不多且准确率不够。初步探讨了可行的判别方法及准确率。

During the process of the battery's utilization and research, the accurate judgement of its charged state becomes more and more important.Especially in the reserach of fast charge technology,on arbitrary conditions,accurate judgement of battery's chargedstate is the precondition to determine the early charge current and charge time,and it's also the key technology to realize fast charge. Now the parameters widely used to judge the charged state are as follows: electrolyte density, discharge pressure, charge pressure, battery's inner resistance, pressure renew time,cumulated discharge electric quantity etc.There are several discriminances to judge the battery's charged state, but practical discriminance to return is not much and the accurate degree is not enough. Some viable discriminances and accurate rate were studied.