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Appl. Sci. 2018, 8(8), 1263; https://doi.org/10.3390/app8081263

Thermal Failure Propagation in Lithium-Ion Battery Modules with Various Shapes

1
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230022, China
2
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
3
School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
4
School of Environment and Resources, Fuzhou University, Fuzhou 350116, China
*
Author to whom correspondence should be addressed.
Received: 7 July 2018 / Revised: 24 July 2018 / Accepted: 26 July 2018 / Published: 31 July 2018

Abstract

Thermal failure propagation is one of the most severe challenges for battery modules and it usually aggravates the thermal hazards, further resulting in serious accidents. This work conducted two groups of experiments to investigate the influence of discharging treatment and module shape on the thermal failure propagation of battery modules, where the triangle module, rectangle module, parallelogram module, line module, hexagon module, and square module were researched. Based on the results, it can be found that an evident domino effect existed on the thermal failure propagation of battery modules. Namely, the failure propagation process consisted of several phases and the number of phases depended on the shape of the module. Besides, it is indicated that discharging treatment on a battery module when it was in a high-temperature environment would aggravate its thermal failure propagation by bringing an earlier thermal failure, a quicker failure propagation, and a larger mass loss. Combining the results of safety and space utilization, it is revealed that the triangular module may be the best choice of battery module due to its smaller failure propagation speed and higher space utilization. View Full-Text
Keywords: battery module; thermal failure propagation; discharging treatment; module shape; surface temperature; mass loss battery module; thermal failure propagation; discharging treatment; module shape; surface temperature; mass loss
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Ouyang, D.; Liu, J.; Chen, M.; Weng, J.; Wang, J. Thermal Failure Propagation in Lithium-Ion Battery Modules with Various Shapes. Appl. Sci. 2018, 8, 1263.

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