动力电池单体电压采样失效分析.pdf

AUTO PARTS | 汽车零部件
动力电池单体电压采样失效分析
凌阳阳　葛俊良　李彬　黄祖朋　邵杰
上汽通用五菱汽车股份有限公司技术中心 广西柳州市 545007
摘 要： 电压采样模块是电池管理系统监控动力电池健康的重要手段，需要重视并分析电压采样常见的失效模式。
通过分析失效模式，了解失效机理，可以从设计、生产工艺等源头抑制故障发生。文章从分析单体电压采
样失效模式、采样失效分析手段出发，阐述了常见的导致单体电压采样失效的原因，并基于日常工作经验
总结了单体电压采样失效的分析手段。
关键词：动力电池　电压采样　采样失效
Failure Analysis of Voltage Sampling in Power Battery Cell
Ling Yangyang　Ge Junliang　Li Bin　Huang Zupeng　Shao Jie
Abstract： The voltage sampling module is an important means for the battery management system to monitor the health of the power battery. It is necessary to pay
attention to and analyze the common failure modes of voltage sampling. Through the analysis of the failure modes, the article hopes to understand the
failure mechanism, and suppresses the occurrence of failures from the sources such as design and production process. Starting from the analysis of cell
voltage sampling failure modes and sampling failure analysis methods, this article explains the common causes of cell voltage sampling failures, and
summarizes the cell voltage sampling failure analysis methods based on daily work experience.
Key words：power battery, voltage sampling, sampling failure
1　引言 SOC 计算、安全监控、故障诊断等，当单体 两片芯片间的数据通讯 [2]。在进行电路设计时，