Which welding techniques can be used for connecting battery cells?

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.

How can a laser beam be used to connect a battery cell?

To position the laser beam onto the work piece, the scanner optics Remote Welding Elephant by Arges was used. This optics This Section quantitatively compares the three presented welding techniques for connecting battery cells in terms of electrical contact resistance, ultimate tensile force and heat input into the cell.

What is the smallest energy storing component in a battery?

Within any battery storage, the smallest energy storing component is the battery cell or short cell. Whereas for mobile devices, e.g., laptops, only a few cells are combined, in large battery assemblies up to several thousand cells have to be connected.

Can welding defects be detected in a BCC?

However, the welding defects in the BCC during the welding process are characterized by a disorganized distribution, extensive size variations, multiple types, and ambiguous features, posing challenges for detecting welding defects in the current collector.