Experimental Study on the Mechanism of Thermal Runaway Propagation in Lithium-ion Battery Pack for Electric Vehicles

被引：0
|
作者：
Jiang F. [1 ]
Zhang F. [1 ,2 ]
Xu C. [1 ,2 ]
Li C. [2 ]
Wang S. [3 ]
Ren Y. [3 ]
Feng X. [2 ]
机构：
[1] College of Engineering, China Agricultural University, Beijing
[2] State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing
[3] Battery Research Department, New Energy Development Institute, FAW, Jilin
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 14期
关键词：
Battery pack; Battery safety; Energy storage; Lithium-ion batteries; Thermal runaway;
D O I：
10.3901/JME.2021.14.023
中图分类号：
学科分类号：
摘要：
Battery safety problem, which is resulted by thermal runaway, still hinders the wider market penetration of electric vehicles. Thermal runaway will be initiate when battery exposed in abuse conditions, then the amounts of heat are released, resulting the thermal runaway propagation. Although the mechanism of thermal runaway and thermal runaway propagation is well documented, most of researches base on cell and module. For exploring the thermal runaway propagation mechanism of pack, a thermal runaway propagation test is conducted for pack. According to the level of energy release, the thermal runaway propagation of system is divided into three phases: the propagation within module, the propagation between modules and the deflagration. Additionally, modals have been concluded from test data that include the ordered propagation, the synchronous propagation and the reversal propagation. The mechanism of thermal runaway propagation is revealed considering the propagation results and pack construction. The liquid cooling plate have a guiding effect on the thermal runaway propagation path. The loss of pack integration is dangerous, because it leads to high-potential combustion. The air gap can mitigate thermal runaway propagation. Overall, the characterization and mechanism of thermal runaway propagation of system is revealed through above analyzes, and the results provides a basis for the safety design of pack. © 2021 Journal of Mechanical Engineering.
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页码：23 / 31
页数：8
相关论文
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