Numerical simulation of battery thermal runaway release gas diffusion and transport in the cabin of lithium battery powered ship

LIAN Jie, FENG Xing, LIU Yifan, LIAO Weimin, LII Wei

doi:10.16411/j.cnki.issn1006-7736.2023.03.013

2023 , Vol. 49 >Issue 3: 122 - 128

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2023.03.013

Numerical simulation of battery thermal runaway release gas diffusion and transport in the cabin of lithium battery powered ship

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(1.Dalian Municipal Party School of the Communist Party of China, Dalian 116001, China；2.Marine College, Dalian Maritime University, Dalian 116026, China；3.Dongjiang MSA, Tianjin 731699, China)

Received date: 2023-05-08

Revised date: 2023-06-13

Accepted date: 2023-06-13

Online published: 2023-09-12

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Abstract

In order to accurately assess the possible explosion risk caused by thermal runaway accidents of the lithium battery powered marine vessels, a numerical model for simulating the diffusion and transport of explosive gas clouds in the battery compartment under different ventilation conditions was established based on the Euler multiphase flow model coupling the standard k- ε turbulence model. Taking a domestic lithium battery powered marine ship as the research target, the gas transport process after thermal runaway of batteries with various number scales under different air conditioning conditions was analyzed, and the distribution and transportation of combustible and explosive gas clouds characterized by using the combustion and explosion range of the main component-H2 of the released gas were obtained. The calculation results indicate that the released gas rapidly diffuses inside the cabin and accumulates towards the cabin roof. The larger the number of batteries with gas release, the larger the explosive gas cloud area and gas concentration. The explosive gas cloud can be decreased by ventilation but cannot be efficiently reduced by simply increasing the supplied air rate. CFD numerical simulation can be utilized to assist in evaluating the cabin explosion risk caused by gas release events.

Key words： lithium-ion battery powered ship; battery thermal runaway; explosive gas clouds; numerical model of diffusion transport; computational fluid dynamics(CFD)

Cite this article

LIAN Jie, FENG Xing, LIU Yifan, LIAO Weimin, LII Wei . Numerical simulation of battery thermal runaway release gas diffusion and transport in the cabin of lithium battery powered ship[J]. Journal of Dalian Maritime University, 2023 , 49(3) : 122 -128 . DOI: 10.16411/j.cnki.issn1006-7736.2023.03.013

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