A 3D simulation model of thermal runaway in Li-ion batteries coupled particles ejection and jet flow

Advances and challenges in thermal runaway modeling of lithium-ion batteries

“… 40 , 170 , 171 , 172 , 173 , 174 To overcome these challenges, current research often relies on simplifications and assumptions, such as presuming that gas generation rates are proportional to reaction rates 19 , 123 , 166 , 167 , 168 and parameterizing coupling relationships mainly using gas analysis results after TR instead of real-time gas data. 12 , 167 , 175 , 176 , 177 While these approaches may approximate pressure evolution to a certain extent, their accuracy remains a concern.…”

“…This framework has been widely adopted in subsequent numerical studies for its practicality in capturing both jet dynamics and heat transfer. 123 , 168 , 176 , 177 …”

“…Early investigations of battery fires focused on calculating combustion properties using combustion kinetics models. 178 , 179 , 180 Recently, CFD models for LIB fires have emerged, 78 , 124 , 167 , 175 , 176 , 177 , 181 , 182 enabling reliable predictions of physical field distributions outside LIBs. Nonetheless, challenges remain, such as explaining the generation mechanism of multiphase materials involved in the typical multiphase process of LIB venting and fire, which includes emissions of gases, electrode particles, and electrolyte droplets.…”

First Experimental Assessment of All-Solid-State Battery Thermal Runaway Propagation in a Battery Pack

“…Knowledge of these parameters allows for studying the impact of the thermal jet on the propagation of TR to a target cell. Researches , on this jet phenomenon are scarce. It is important to carry out a full thermal and kinetic study of the jet to assess the occurrence of TR propagation in an ASSB pack.…”