摘要
电池热失控是制约电动汽车和新型规模储能发展的瓶颈,了解电池热失控诱因以及采取相应的应对策略对于提高电池安全性至关重要。首先简要介绍了电池热失控的诱因以及热失控机理;从电池内部热管理和电池外部热管理两个方面重点综述了锂离子电池热管理研究进展。在电池内部关键组件改性策略上重点介绍了正负极材料改性、电解液体系优化和隔膜改性等;在电池外部热管理系统研究上主要介绍了空气冷却、液体冷却和相变材料冷却的三种方法。综合分析表明,电池内部组分是电池产热和抑制热失控源头,减少电极产热并提高材料热稳定性、电解液中引入功能添加剂及开发固态电解质、提高隔膜热稳定性及开发阻燃功能等策略有助于提高电池本身的安全性;通过液体冷却以及结合相变材料冷却的电池热管理系统及时散热和维持电池在适宜温度中安全运行同样重要。
Battery thermal runaway is a bottleneck in the development of electric vehicles and new-scale energy storage,and it is crucial to understand the triggers of battery thermal runaway and adopt corresponding countermeasure strategies to improve the battery safety.This paper first briefly introduces the causes and mechanisms of thermal runaway of batteries.Through the discussion of recent related literature,the research progress of thermal management of lithium-ion batteries is reviewed from two aspects:internal thermal management of batteries and external thermal management of batteries.The key component modification strategies inside the battery focus on cathode and anode material modification,electrolyte system optimization and separator modification,etc.In the study of the external battery thermal management system,three main methods of air cooling,liquid cooling,and phase change material cooling are introduced.Comprehensive analysis shows that the battery internal components are the source of heat generation and inhibition of thermal runaway,reduce the electrode heat generation and improve the material thermal stability,introduce functional additives and develop solid electrolyte,improve the separator thermal stability and develop flame retardant function to help improve the battery intrinsic safety.Battery thermal management systems through liquid cooling as well as combined with phase change material cooling are equally important in maintaining safe battery operation at the appropriate temperature.
作者
刘邦金
汪林威
吴月月
刘永超
钟国彬
项宏发
LIU Bangjin;WANG Linwei;WU Yueyue;LIU Yongchao;ZHONG Guobin;XIANG Hongfa(CSG Power Generation(Guangdong)Energy Storage Technology Co.,Ltd.,Guangzhou 511400,Guangdong,China;School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;China Southern Power Grid Technology Co.,Ltd.,Guangzhou 510080,Guangdong,China)
出处
《化工学报》
EI
CSCD
北大核心
2024年第12期4413-4431,共19页
CIESC Journal
基金
国家自然科学基金项目(52072105)。
关键词
锂离子电池
电化学
热力学
热管理
纳米材料
冷却系统
lithium-ion batteries
electrochemistry
thermodynamics
thermal management
nanomaterials
cooling system
