Thermal Runaway Vent Gases from High-Capacity Energy Storage LiFePO4 Lithium Iron

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, H2, CO2, CH4, C2H4, 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.

Quantitative Analysis of Lithium-Ion Battery Eruption Behavior in Thermal Runaway

“…This process delineated boundaries for the flame, albeit with some degree of error, thereby aiding in our comprehension of the extent of thermal runaway flames. According to publicly available studies [2,8,17,[23][24][25], the main components of combustible gases emitted during battery thermal runaway include hydrogen (H 2 ), methane (CH 4 ), propane (C 3 H 8 ), butane (C 4 H 8 ), and acetylene (C 2 H 2 ), among other organic compounds containing carbon. Flames resulting from the combustion of hydrogen typically exhibit a pale-blue color.…”

DC Voltage Source Based on a Battery of Supercapacitors with a Regulator in the Form of an Isolated Boost LCC Resonant Converter

“…Lithium-ion batteries are extensively utilized as rechargeable energy storage devices thanks to their exceptional energy density, making them the choice for power storage in portable systems [7,8]. However, they suffer from a short lifespan and are highly sensitive to high current rates and excessive loading conditions [9][10][11][12][13]. These drawbacks of the batteries pose risks to both the systems and the environment [14].…”