Thermal Runaway Vent Gases from High-Capacity Energy Storage LiFePO 4 Lithium Iron

Feng Qian, Hewu Wang (), Minghai Li (), Cheng Li, Hengjie Shen, Juan Wang, Yalun Li and Minggao Ouyang
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Feng Qian: School of Mechanical and Engineering, Dalian Jiaotong University, Dalian 116028, China
Hewu Wang: State Key Laboratory of Automotive Safety and Energy, Tsinghua Universtiy, Beijing 100084, China
Minghai Li: School of Mechanical and Engineering, Dalian Jiaotong University, Dalian 116028, China
Cheng Li: State Key Laboratory of Automotive Safety and Energy, Tsinghua Universtiy, Beijing 100084, China
Hengjie Shen: School of Mechanical and Engineering, Dalian Jiaotong University, Dalian 116028, China
Juan Wang: School of Mechanical and Engineering, Dalian Jiaotong University, Dalian 116028, China
Yalun Li: State Key Laboratory of Automotive Safety and Energy, Tsinghua Universtiy, Beijing 100084, China
Minggao Ouyang: State Key Laboratory of Automotive Safety and Energy, Tsinghua Universtiy, Beijing 100084, China

Energies, 2023, vol. 16, issue 8, 1-15

Abstract: Lithium batteries are being utilized more widely, increasing the focus on their thermal safety, which is primarily brought on by their thermal runaway. This paper’s focus is the energy storage power station’s 50 Ah lithium iron phosphate battery. An in situ eruption study was conducted in an inert environment, while a thermal runaway experiment was conducted utilizing sealed pressure containers and an external heating triggering mechanism. Both the amount of gas release and the battery’s maximum temperature were discovered. Using gas chromatography, the gas emission from the battery was examined. Its principal constituents included CO, H 2 , CO 2 , CH 4 , C 2 H 4 , and so on. Moreover, the experiment discovered a second eruption of lithium iron phosphate, and the stage of its eruption was separated by the pressure signal of the sealed experimental chamber, giving a theoretical foundation and technological backing for the thermal catastrophe safety of lithium batteries.

Keywords: battery safety; gas analysis; lithium-ion; second eruption; vent gas emission (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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