Welding For Batteries. This welding technique will be able to bridge a bigger gap and create a larger cross section with better surface quality. Typically battery interconnects are made from nickel strips ideally designed with bifurcations and projections which are then resistance welded using parallel gap or step welding methods.
This welding technique will be able to bridge a bigger gap and create a larger cross section with better surface quality. Resistance spot ultrasonic or laser beam welding are mostly used for connecting battery cells in the production of large battery assemblies. Most commonly heat conduction welding is used for pouch cells.
Smart welders are available with different welding powers and in different working areas.
Cycle time can be reduced even further with the use of a galvo scanning system where some motion is handled by quick motions in the galvo head and then indexed after all cells within the welding field are addressed. The compared techniques are resistance spot welding laser beam welding and ultrasonic welding. Resistance spot ultrasonic or laser beam welding are mostly used for connecting battery cells in the production of large battery assemblies. All three joints pose joining challenges but of the three welding multiple layers of foil to a tab is the most challenging.