The joint venture between LG Energy Solution and General Motors will mostly manufacture long axis battery cells, TheElec has learned.
The batteries will be over 500mm long. The cells will also be arranged in two columns in the battery modules, instead of in three columns as done for previously.
Some car models with still use the traditional “T” cell arrangement of ICE platform. However, most car models with have the new two columns module applied.
Long axis battery cell is being used to increase energy density. Even for the same car model, using long axis cells instead of normal battery cells can increase traveling distance per charge by over 10%.
General Motors’ Ultium platform uses 12 battery modules for the standard model.
The battery cells will also use Posco Chemical’s NCMA (nickel, cathode, manganese and aluminum) cathode. Nickel will account for over 80% of the cathode.
The application of long axis, high-nickel cathode and two column modules will increase traveling distance of electric vehicles, save cost and have more design freedom in car models.
General Motors will use the new battery for its Cadillac, Chevrolet, GMC SUV and pick-up truck brands.
The company and LG also applied high capacity mixing equipment and lamination process to the battery production process to increase productivity.
The pair will use 2,300 liter capacity mixing equipment. The lamination process is part of the stacking process. The cathode and anode are stacked on top of the separator. The materials are arranged through the lamination process, then folded.
This process is considered to be more convenient in making the battery cells longer than the z-stacking method.
Meanwhile, LG and General Motors announced that they will be building their second factory in the US with 2.7 billion won. The new factory will be constructed at Spring Hill, Tennessee. Construction will begin this year, while it will begin operations in the second half of 2023.