Influence of internal and external factors on thermal runaway characteristics of lithium-ion batteries induced by dual heat sources: An experimental research

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2024-11-27 DOI:10.1016/j.applthermaleng.2024.125072

Gang Zhou , Siqi Yang , Yang Liu , Qi Zhang , Chenxi Niu , Huaheng Lu , Zhikai Wei , Qi Huang

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引用次数: 0

Abstract

Localized overheating is a common application fault in lithium-ion batteries (LIBs) and a significant trigger for thermal runaway (TR). The application scenarios involving multi-point synchronous heating have made the induction of LIB TR behavior by dual heat sources a research hotspot. Both internal battery conditions and external heat source conditions influence TR behavior. This study systematically investigates and analyzes experimental results from two aspects: internal battery conditions (cathode material type and state of charge (SOC)) and external heat source conditions (arrangement of dual heat sources and heating power). The results show that SOC and cathode materials are the key factors affecting thermal safety. Under dual heat source induction, NCM811 battery has the lowest TR triggering temperature and the highest TR peak temperature due to the difference in thermal stability of electrode materials. Different heat source arrangement will affect the heat transfer path between the battery and the heat source, and then affect the heat transfer and heat dissipation efficiency between the battery modules. HBH heat source arrangement has the shortest thermal runaway triggering time. TR in NCM batteries is accompanied by flame jetting behavior, with the largest peak flame area of 4415 cm² observed in 100 % SOC NCM811 batteries. The primary components of particulate matter in TR eruptions are carbon and metal oxides, with internal battery conditions being important factors influencing the composition of erupted particles. The severity of TR is linked to mass loss, with NCM811 batteries experiencing the highest mass loss due to the combustion of more materials, indicating greater fire risk. The research results provide important scientific references for improving the theory of LIB TR, guiding TR and fire prevention and control, and formulating relevant standards.

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内外因素对双热源下锂离子电池热失控特性影响的实验研究

局部过热是锂离子电池（LIBs）常见的应用故障，也是热失控（TR）的重要触发因素。涉及多点同步加热的应用场景使得双热源诱导LIB TR行为成为研究热点。电池内部条件和外部热源条件都会影响TR性能。本研究从电池内部条件（正极材料类型和荷电状态（SOC））和外部热源条件（双热源和加热功率的布置）两个方面对实验结果进行了系统的调查和分析。结果表明，SOC和正极材料是影响热安全的关键因素。在双热源感应下，由于电极材料热稳定性的差异，NCM811电池的TR触发温度最低，TR峰值温度最高。不同的热源布置会影响电池与热源之间的传热路径，进而影响电池模块之间的传热和散热效率。HBH热源布置的热失控触发时间最短。NCM电池中的TR伴随着火焰喷射行为，在100% SOC的NCM811电池中观察到的最大峰值火焰面积为4415 cm2。TR火山喷发颗粒物的主要成分是碳和金属氧化物，电池内部条件是影响喷发颗粒物组成的重要因素。TR的严重程度与质量损失有关，NCM811电池的质量损失最大，因为燃烧的材料更多，表明火灾风险更大。研究结果为完善LIB TR理论，指导TR与防火控制，制定相关标准提供了重要的科学参考。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.