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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
5-25 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.
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