Laser wire welding of energy storage cabinet

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 high energy density laser beam welding?

For the manufacture of austenitic stainless steel component, high energy density laser beam welding enables to provide lower welding heat input and higher welding speed in comparison to conventional arc welding, which is conducive to improve performance properties of the welded joint .

Why is laser beam welding of copper a challenge?

Laser beam welding of copper materials represents a challenge due to the material-specific properties . Copper shows a high thermal conductivity (394 W/ (mK)) and low absorption rate at room temperature for wavelength ranges that include common beam sources such as CO 2 lasers or Nd:YAG lasers (Fig. 3).

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.

What is laser micro welding?

Laser micro welding with fibre lasers (1070 nm) meets the requirements placed on joining technology. Due to the high beam quality, very small spot diameters and thus very high intensities can be achieved. Copper materials of high purity are used to achieve the high conductivity of the electrical connection.

What is laser wire directed energy deposition (LW-DED)?

• Laser wire directed energy deposition (LW-DED) applications almost always use welding wire feedstock certified by the manufacturer to conform to AWS or ISO standards for the specific alloy and wire product in question.