2.3 Cell Contacting

Contacting involves attaching conductive metal tabs to the exposed current collectors of the electrode stack or jelly roll. After an optical inspection, the cell’s contacting areas are cut or stamped into precise geometries. The anode and cathode tabs—typically made of copper, nickel, or aluminum—are then accurately positioned and welded onto these areas. The process ensures reliable electrical connection and prepares the cell for external terminal integration. Final checks include stack geometry verification and short circuit testing.