动力电池参数分析及参数检测的实现

Parameters Analysis of Power Batteries and the Realization of Parameters Test

由于单体电池在生产制造过程中存在不一致性,电池成组后在性能指标上往往达不到单体电池原有的水平,整组电池的使用寿命大大缩短,本文分析了电池温度、容量、能量、倍率特性以及内阻这几项参数不一致对电池成组造成的影响,提出根据电池参数建立电池筛选体系,相较于现阶段以电池自放电率和电压变化作为电池成组的筛选标准,提高了电池筛选效率,构建了在单体电池充放电过程中检测各项参数的系统框架,并提出了具体的软硬件设计方案。

The performance and the service life of the battery pack degrades compared to a battery cell due to the battery inconsistency effect which exists in the manufacture process.This paper analyzes the influence caused by the differences of temperature,capacity,energy,rate and internal resistance,and puts forward ascertain the selecting system based on the batteries parameters.It improves the selecting efficiency according to the standard based on the self-discharge and the voltage change,constructs the system of test parameters between the charging and discharging process and gives a design plan about hardware and software in detail.