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Remote Cutting of Coated Battery Foils


Coated foils are typically used to create batteries which have a huge range of applications in a large variety of industries, from consumer electronics and hand held mobile devices to the rapidly expanding e-mobility sector.

These foils are typically made of aluminium or copper with coated are bare areas on both sides. This can be challenging to process as edge quality must be consistent across all areas of the workpiece. Fiber lasers are ideal to use to cut foils, they provide a non-contact process and also work to the levels of precision required, which are extremely thin (usually around 100 microns).

Introducing the redPOWER PRISM fiber laser

Using our CW redPOWER PRISM fiber laser, we can create high edge quality cuts with high tolerances. The accuracy of the cut prevents any problems caused by rough edges, burrs and small particles, ensuring no risk of damage to adjacent parts in the manufacturing process. Long term maintenance costs are considerably lower with a fiber laser, as no parts need to be replaced due to wear and tear. Combining this with low energy consumption of our fiber lasers makes the process more cost efficient and environmentally friendly than traditional methods when processing this type of material.

What does the process involve?

The process involves using an SPI redPOWER PRISM 2kW single mode fiber laser and modulating it to cut with the pulses of the laser beam. The high beam quality gives a small intense focal spot which allows control of the heat input and keeps heat affected zones to a minimum. The high average power and 50kHz max modulation frequency of this laser allows high cutting speeds whilst keeping burr to a minimum; resulting in a sharp, high tolerance cross section.

Related reading

We also recommend reading the following battery related articles, which are also a part of our series related to e-mobility:

Contact Us for cutting-edge fiber laser solutions!

We hope you have enjoyed this application insight. It’s just one of a range of cutting solutions, delivered by SPI’s innovative range of Pulsed and Continuous Wave fiber lasers. Call us now, to speak to our team about cutting solutions available from SPI Lasers, which can help deliver your e-mobility manufacturing challenges. Click this link to subscribe to future updates.

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