Advances in thermal management of lithium-ion batteries
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.
lithium-ion batterieselectrochemistrythermodynamicsthermal managementnanomaterialscooling system
万方数据
维普
