Fire at an italian lithium iron energy storage station

What causes large-scale lithium-ion energy storage battery fires?

Conclusions Several large-scale lithium-ion energy storage battery fire incidents have involved explosions. The large explosion incidents, in which battery system enclosures are damaged, are due to the deflagration of accumulated flammable gases generated during cell thermal runaways within one or more modules.

Why are lithium-ion batteries causing fires and explosions?

Deflagration pressure and gas burning velocity in one important incident. High-voltage arc induced explosion pressures. Utility-scale lithium-ion energy storage batteries are being installed at an accelerating rate in many parts of the world. Some of these batteries have experienced troubling fires and explosions.

How many energy storage battery fires are there?

Unfortunately, there have been a large number of energy storage battery fires in the past few years. For example, in South Korea, which has by far the largest number of energy storage battery installations, there were 23 reported fires between August 2017 and December 2018 according to the Korea Joongang Daily (2019).

Should lithium-ion storage batteries be protected?

Recently issued standards and regulations for lithium-ion storage battery systems now explicitly require protection to prevent and/or control thermal runaways leading to possible deflagrations. Other recently imposed measures are intended to limit electrical fault energies in battery control units.

How fast do lithium ion batteries burn?

Similarly, a burning velocity of about 0.20 m/s has been calculated for vented runaway lithium-ion battery gases at equivalence ratios of about 0.60 and about 1.6–1.8 (Johnsplass et al., 2017).