Cell & Pack Manufacturing

Cell & Pack Manufacturing

Manufacturing Process Map | 1. Electrode Production

Manufacturing Process Map | 1. Electrode Production Coating & Drying

Mixing Challenges

slurry quality (uneven dispersion)

Electrode slurries are coated onto the current collector 54% cost of electrode production All other process steps depend on the quality of this step.

Slurries are made by mixing active material, binder, and solvent The different combinations between those three highly affect coating & drying

Slitting & Notching

Calendaring Challenges

electrode waste; physical damage to material

Electrodes are densified to a target value

Electrodes are cut into singulated segments

Here it’s important to determine electrode quality and density

Uncoated areas are cut out leaving the parts where tabs will be grounded

Vacuum Drying

of total manufacturing cost

pouch film speed

cylindrical film speed

scrap rate

m/min

m/min

Removes leftover solvent

Challenges

processing time; utilization loss; difficult to measure quality & get quality metrics

Challenges

edge quality (burr defects often occur - dangerous), difficult to inspect at speed; tool wear; lowest OEE of any process because it’s difficult to automate

Challenges

processing time; footprint; takes 12-24 hours

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

Source: LG Energy; BCG

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