Cell blow-up refers to a physical expansion or bursting of a battery cell caused by internal pressure buildup, typically due to gas generation during abnormal chemical reactions. It is often a warning sign of failure and can be a precursor to thermal runaway, fire, or explosion in severe cases.
Effects:
Cell swelling (early stage)
Vent rupture in cylindrical or prismatic cells
Loss of capacity and performance
Leakage or emission of toxic gases
In severe cases: thermal runaway or fire
