Clamping force refers to the mechanical pressure applied to battery cells (especially in prismatic and pouch cells) within a battery module or pack to maintain structural integrity, thermal stability, and electrochemical performance during operation.
Why Clamping Force Is Important:
Prevents cell swelling due to gas generation or electrolyte expansion, particularly in pouch cells
Enhances thermal contact between cells and cooling systems
Improves cycle life and safety by minimizing internal mechanical stress and contact resistance
Maintains alignment and structural integrity in high-vibration or thermal cycling environments (e.g. EVs)
