What causes thermal runaway of lithium iron phosphate battery?

The paper studied the gas production and flame behavior of the 280 Ah large capacity lithium iron phosphate battery under different SOC and analyzed the surface temperature, voltage, and mass loss of the battery during the process of thermal runaway comprehensively. The thermal runaway of the battery was caused by external heating.

Are lithium iron phosphate batteries safe for energy storage?

However, the mainstream batteries for energy storage are 280 Ah lithium iron phosphate batteries, and there is still a lack of awareness of the hazard of TR behavior of the large-capacity lithium iron phosphate in terms of gas generation and flame.

How much energy does a lithium iron phosphate battery release?

The complete combustion of a 60-Ah lithium iron phosphate battery releases 20409.14–22110.97 kJ energy. The burned battery cell was ground and smashed, and the combustion heat value of mixed materials was measured to obtain the residual energy (ignoring the nonflammable battery casing and tabs) [35 ]. The calculation results are shown in Table 6.

What happens if a lithium ion battery combusts during thermal runaway?

Multiple requests from the same IP address are counted as one view. During thermal runaway (TR), lithium-ion batteries (LIBs) produce a large amount of gas, which can cause unimaginable disasters in electric vehicles and electrochemical energy storage systems when the batteries fail and subsequently combust or explode.

Does 86 Ah lithium iron phosphate battery have a thermal runaway behavior?

Huang et al. analyzed the thermal runaway behavior of the 86 Ah lithium iron phosphate battery under overheated conditions and showed that there were two peaks of temperature rise rate and more carbon dioxide and hydrogen contained among gas produced when the battery was triggered thermal runaway.

What is the thermal runaway behavior of 243 Ah lithium iron phosphate battery?

For large-capacity lithium-ion batteries, Liu et al. studied the thermal runaway characteristics and flame behavior of 243 Ah lithium iron phosphate battery under different SOC conditions and found that the thermal runaway behavior of the battery was more severe and the heat production was more with the increase of SOC.