Cell & Pack Manufacturing

Manufacturing Process Map - 3. Formation

CHALLENGES

slow throughput due to long time required; fire (most factory fires occur here)

CHARGING & DISCHARGING Electrochemical activation. SEI is formed on the anode

525 days

of total manufacturing cost

time

scrap rate

AGING Battery is stored at a consistent temperature and humidity to allow for corrosion mechanisms from potential contamination

CHARGING, DISCHARGING, & AGING The previous processes are repeated

CHALLENGES

Process time, throughput; factory footprint

CHALLENGES throughput

DEGASSING CHALLENGES

residual gas inside the cell; seal quality; throughput (a lot of additional CAPEX

Pouch only. Gases formed during aging are cut off inside of a vacuum chamber (sacrificial gas bag).

QUALITY CONTROL End of line check capacity, resistance, voltage, etc., and cosmetic

CHALLENGES

cosmetic & variation in capacity; yield

Graphics courtesy of LG Energy Solution. Reproduced with permission. Sources: LG Energy; BCG; RWTH PEM

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