大容量锂离子电池热失控后产热产气性能研究

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中图分类号：TM615 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20240352

Research on the Heat and Gas Production Performance of Large Capacity Lithium-Ion Batteries after Thermal Runaway

JiangChenglong，Ren Gaohui， Liu Lei （CATARC New EnergyAutomotive Test Center （Tianjin） Co.，Ltd.， Tianjin 300300）

Abstract：Thisstudy takes4O A·h square-shaped ternary lithium-ion bateryas the research object to study their gasgeneration characteristicsafter thermalrunaway，anduses Accelerating Rate Calorimeter （ARC）and thermal runwaygasgeneration performancetestequipmentdedicatedfor large capacitylithium-ionbatteries todetermine parameters like intensityof pressure and temperatures inside theheat&gas generationunit after thermal runway.Gas productionprocessisintroduced based on thewidelyused thermal runawayheat generation model，providing data support for theestablishmentof batery thermal runwaysimulation model with composite gas generation characteristics.

Keywords：Thermal runaway of lithium-ion batteries，Thermal runaway gas generation，Thermal runawayheatgeneration，Thermalrunawaysimulation

1前言

当前，加速绝热量热仪（AcceleratedAdiabaticCalorimeter，ARC）广泛用于测试锂离子电池热失控过程中的自产热温度、热失控温度、最高温度等数据，测试数据导入锂离子电池的热失控仿真模型可用于模型标定和参数微调，以获得与实际测试更加接近的仿真结果。（剩余6810字）