Battery tab welding. Battery can welding. Battery pack assembly. For each battery spot welding application and type of battery manufactured, AMADA WELD TECH offers a production solution: resistance welding, laser welding, laser marking, laser surface cleaning or laser cutting.
Brass (CuZn37) test samples are used for the quantitative comparison of the welding techniques, as this metal can be processed by all three welding techniques. At the end of the presented work, the suitability of resistance spot, ultrasonic and laser beam welding for connecting battery cells is evaluated.
AMADA WELD TECH has been working with leading lead acid battery manufacturers for more than twenty years. Our focus has been characterizing the resistance welding processes and refining the effective use of closed loop inverters with real time feedback and constant power control.
Additionally, the three welding techniques are compared quantitatively in terms of ultimate tensile strength, heat input into a battery cell caused by the welding process, and electrical contact resistance.
Lead acid battery manufacturing is tricky due to the intrinsic properties of the lead castings. Closed-loop DC inverters make consistent welds.
Every single cell connection influences the functionality and efficiency of the whole battery system. Resistance spot, ultrasonic or laser beam welding are mostly used for connecting battery cells in the production of large battery assemblies.