Cell & Pack Manufacturing

Cell & Pack Manufacturing

Manufacturing Process Map | 2. Cell Assembly | Pouch

Manufacturing Process Map | 2. Cell Assembly | Pouch Tab Welding

Tabs are ultrasonically welded to the jelly rolli

Pouch Forming

Challenges

Making a case by pressing a film

corner cracking

20% of total manufacturing cost

Challenges

foil damage; coating adhesion

parts/min

speed

scrap rate

Challenges

positioning accuracy of anode & cathode sheets (alignment); speed (affects positioning)

Lamination & Stacking/Winding Lamination: laminating layers to maintain positional integrity Stacking: stacking layers of electrode & separator. Note that wound pouch cells also exist.

Electrolyte Injection

Filling the electrode pocket with electrolyte through metered dispensing

Challenges

dosing and distribution accuracy of the electrolyte in the cell; No electrolyte residues in the sealing seam; seal integrity

*Graphics courtesy of LG Energy Solution. Reproduced with permission.

Source: LG Energy; BCG; RWTH PEM

Extracted from the PDF; charts and images may read imperfectly.