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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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.