Flow Channel Design and Simulation for Transport Cases of Spent Power Lithium Batteries Featuring Directed Heat Dissipation

XIE Ya; PENG Xiuqian; MU Xinni; ZHANG Lianchun; WANG Xiaomeng; ZHAO Ranran

doi:10.19554/j.cnki.1001-3563.2025.13.005

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (13) : 41-47. DOI: 10.19554/j.cnki.1001-3563.2025.13.005

Special Topic on Protection Technologies and Packaging Containers for Lithium Battery Transportation

Flow Channel Design and Simulation for Transport Cases of Spent Power Lithium Batteries Featuring Directed Heat Dissipation

XIE Ya^1,*, PENG Xiuqian², MU Xinni¹, ZHANG Lianchun³, WANG Xiaomeng³, ZHAO Ranran¹

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Abstract

The work aims to study the thermal safety and insulation and pressure relief measures for transport cases of spent power lithium batteries. With 15 sets of 2.8 kW·h square lithium battery modules as the research object, a transport case with directional heat conduction and pressure relief functions was designed based on the packaging specifications of "International Maritime Dangerous Goods Code" (IMDG CODE) P911 and LP906. A thermal runaway combustion model was constructed with the fire dynamics simulation software (FDS), and compared with the thermal runaway triggering experiments of the real transport case for power lithium batteries. The transport case for spent power lithium batteries adopted a U-shaped flow channel design, which effectively suppressed flame propagation. At the same time, when the ignition groove was arranged on the long side of the inner case, its heat conduction effect was 43% higher than that of the short side, and the pressure relief ability was significantly enhanced. The transport case as a whole met the requirements of P911 and LP906. The thermal conduction flow and channel layout correlation are revealed through FDS simulation. The integral case body is recommended to improve the safety of transport cases. The research results can provide a safety solution for the transport case of spent power lithium batteries.

Key words

transport packaging for dangerous goods / thermal runaway protection / numerical simulation / lithium battery safety

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XIE Ya, PENG Xiuqian, MU Xinni, ZHANG Lianchun, WANG Xiaomeng, ZHAO Ranran. Flow Channel Design and Simulation for Transport Cases of Spent Power Lithium Batteries Featuring Directed Heat Dissipation[J]. Packaging Engineering. 2025, 46(13): 41-47 https://doi.org/10.19554/j.cnki.1001-3563.2025.13.005

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