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What is spot welding a lithium ion battery?

Spot welding is the recommended technique for joining parts of a lithium-ion battery because of several factors: Precision: Precise welds are made possible by the localized heat generation, which doesn’t damage nearby materials. In the process of making batteries, this is vital because too much heat can harm delicate cell components.

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.

Can a battery cell casing be welded?

The findings are applicable to all kinds of battery cell casings. 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.

What is resistance spot welding?

Resistance spot, ultrasonic or laser beam welding are mostly used for connecting battery cells in the production of large battery assemblies. Each of these welding techniques has its own characteristics depending on the material properties and contact geometry. Cell casing and terminal dimensions may constrain possible contact geometries.

What is a capacitor energy storage welder?

2.The new-designed capacitor energy storage welder uses the latest energy-gathered pulse technology, is has great welding power，the soldered dot is uniform and beautiful, no blackening. 3.The maximum output of the 801D welder is 14.5kilowatts. It can be used for large batteries welding.

How does a spot welder work?

A spot welder relies on a high-resistance connection between the metal and the electrodes in order to generate enough heat to form a weld. So, when you are pressing your probes down onto the battery, use just enough force to remove any air gaps between the surface and the metal.