2.1 Frame Assembly

This critical sub-process involves constructing the main structural housing or frame of the module, inserting the prepared cells according to the specified layout, applying a defined compressive force to the cell stack, (crucial for pouch and prismatic cells), and verifying the correct polarity of each cell. These steps ensure the module's mechanical integrity, optimise cell performance and longevity through proper compression, and prevent hazards by confirming correct cell orientation before any electrical connections are made. This sequence is always followed to build safe and reliable battery module.