Assembly

Assembly brings the anode, cathode, and separator together into a finished cell format. It's typically broken into several distinct sub-steps:

Winding / Stacking — Electrodes and separator are wound (cylindrical/prismatic) or stacked (pouch) into the cell's internal structure.

Tab Welding — Current-carrying tabs are welded to the electrode foils to connect the internal stack to the external terminals.

Casing — The wound or stacked assembly is inserted into its case (can, pouch, or prismatic housing) and sealed.

Electrolyte Filling — Electrolyte is injected into the sealed case under vacuum to ensure full wetting of the porous electrode structure.