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Volume 12
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10.3390/electronics12010200
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Article

Study on Thermal Runaway Propagation Characteristics of Lithium Iron Phosphate Battery Pack under Different SOCs

by
Minghao Zhu
1,2,
Jiajie Yao
3,*,
Feiyu Qian
1,2,
Weiyi Luo
1,2,
Yin Chen
1,2,
Luyao Zhao
1,2 and
Mingyi Chen
1,2,*
1
School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
2
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
3
School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, China
*
Authors to whom correspondence should be addressed.
Electronics 2023, 12(1), 200; https://doi.org/10.3390/electronics12010200
Submission received: 25 November 2022 / Revised: 27 December 2022 / Accepted: 28 December 2022 / Published: 31 December 2022
(This article belongs to the Special Issue Electro-Thermal Modelling, Status Estimation and Thermal Management of Electric Vehicles)
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Abstract

Thermal runaway (TR) of lithium-ion batteries (LIBs) has always been the most important problem for battery development, and the TR characteristics of large LIBs need more research. In this paper, the thermal runaway propagation (TRP) characteristics and TR behavior changes of three lithium iron phosphate (LFP) batteries (numbered 1 to 3) under different states of charge (SOCs) were studied. The main parameters discussed include temperature, temperature rise rate, mass, mass change rate, and TRP flue gas ejection behavior. The experimental results indicate that with the increase in SOC, the TRP behavior of the battery is more obvious. The higher the temperature, more blocked temperature rise rate, mass loss rate, and greater mass loss, the shorter the TRP time that can be observed. The TRP interval of 100% SOC battery 1 to 2 is 71.4% smaller than that of 50% SOC, while the TRP interval of battery 2 to 3 is reduced by 87.2%. In addition, a 100% SOC battery pack exhibits spark ejection, while 50% SOC and 0% SOC battery pack exhibit flue gas generation.
Keywords: state of charge; thermal runaway propagation; LFP battery pack; temperature; mass loss state of charge; thermal runaway propagation; LFP battery pack; temperature; mass loss

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MDPI and ACS Style

Zhu, M.; Yao, J.; Qian, F.; Luo, W.; Chen, Y.; Zhao, L.; Chen, M. Study on Thermal Runaway Propagation Characteristics of Lithium Iron Phosphate Battery Pack under Different SOCs. Electronics 2023, 12, 200. https://doi.org/10.3390/electronics12010200

AMA Style

Zhu M, Yao J, Qian F, Luo W, Chen Y, Zhao L, Chen M. Study on Thermal Runaway Propagation Characteristics of Lithium Iron Phosphate Battery Pack under Different SOCs. Electronics. 2023; 12(1):200. https://doi.org/10.3390/electronics12010200

Chicago/Turabian Style

Zhu, Minghao, Jiajie Yao, Feiyu Qian, Weiyi Luo, Yin Chen, Luyao Zhao, and Mingyi Chen. 2023. "Study on Thermal Runaway Propagation Characteristics of Lithium Iron Phosphate Battery Pack under Different SOCs" Electronics 12, no. 1: 200. https://doi.org/10.3390/electronics12010200

APA Style

Zhu, M., Yao, J., Qian, F., Luo, W., Chen, Y., Zhao, L., & Chen, M. (2023). Study on Thermal Runaway Propagation Characteristics of Lithium Iron Phosphate Battery Pack under Different SOCs. Electronics, 12(1), 200. https://doi.org/10.3390/electronics12010200

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