To tackle CO2 emissions from the transportation sector, the European Commission is considering banning internal combustion engine vehicles by 2035. Battery electric vehicles (BEV) have emerged as the leading solution for this transition. Among BEV technologies, Li-ion batteries stand out as the most promising due to their favorable energy density compared to other options. However, this higher energy density also increases the risk of severe thermal runaway events. Therefore, understanding the phenomena occurring during these events is crucial for enhancing mobility safety. In this framework simulations play a pivotal role in offering precious insights into the mechanism of a thermal runaway.