电动汽车动力电池热失控故障诊断研究

Research on Thermal Runaway Fault Diagnosis of Electric Vehicle Power Battery

基于电动汽车动力电池各类起火燃烧的故障现象,查找电动汽车在各种使用工况中产生动力电池热失控的诱因,结合动力电池结构特点与锂离子电池锂枝晶产生因素,针对各类引发动力电池热失控的诱因进行故障诊断分析,通过故障产生机理提出预防措施优化电动汽车使用方法,提出一套合理有效的电动汽车使用方案,推荐电动汽车柔和驾驶和安全驾驶,提高驾驶员和乘坐员的安全防患意识,减少或避免各类诱因引起动力电池热失控,提高电动汽车使用的安全性和可靠性。

Based on all kinds of failure phenomena of electric vehicle power battery burning,find out the inducements of electric vehicle thermal runaway of power battery under various operating conditions.In combination with the structural characteristics of power battery and the factors causing lithium dendrite of lithium ion battery,carry out fault diagnosis and analysis on all kinds of inducements causing thermal runaway of power battery,and propose preventive measures to optimize the use of electric vehicle through the failure generation mechanism,Propose a reasonable and effective use plan for electric vehicles,recommend soft driving and safe driving of electric vehicles,improve the safety awareness of drivers and passengers,reduce or avoid various incentives to cause thermal runaway of power batteries,and improve the safety and reliability of electric vehicles.