Cell & Pack Manufacturing

Manufacturing Process Map - 4. Pack Assembly CHALLENGES

surface cleaning; weld quality; cell to cell matching

CONNECTING BATTERY CELLS Battery cells are connected after surface is cleaned

MODULARIZATION The cells are attached to the module case

CHALLENGES

damage due to placement (primarily pouch); large machinery required due to module mass & dimensions, safety at high voltages

CHALLENGES

battery pack integration with other components in EV or BESS

CHALLENGES

ensuring cable flexibility, Battery cells handling

PACK ASSEMBLY The modules are put in the battery pack and connected

APPLYING BMS A Battery Management System is applied to battery pack

FINAL INTEGRATION The battery packs are then used in Electrical Vehicle EV) and Battery Energy Storage System BESS

FINAL TEST A series of electrical test including charge and discharge cycle are performed to ensure the highest quality

CHALLENGES

correct wiring and integration of the BMS

CHALLENGES

testing sequence, results and accepted limits vary between manufacturers, resulting in lack of standardization

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

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