Battery Show 2025: Trumpf presents solutions for battery production

"Lasers play a decisive role in electromobility. Trumpf offers laser applications for the entire process chain of battery production as well as for the production of electric motors and for the high-performance electronics of electric cars - we cover the entire spectrum," says Johannes Bührle, responsible for global battery projects at Trumpf. Laser technology is an essential part of battery production. "Together with our customers, we develop tailor-made solutions for their production in our laser application centers worldwide and ensure greater efficiency and productivity in battery production," says Bührle. In electrode production, for example, the laser cuts and welds the electrode foils precisely. In cell assembly, the laser ensures the highest quality and yield, especially when joining different material compounds of current-carrying components. In the production of battery modules and packs, the laser is the decisive tool for creating fast, strong and, above all, repeatable connections of the busbars, which is crucial for a safe and stable battery.

Laser solutions for battery production

With lasers, users can also reliably weld cooling plates for the batteries of electric cars gas-tight in series. This is only possible on an industrial scale with beam shaping technology such as Trumpf's multifocus technology. By sending the light of the laser through a so-called multi-core fiber and then directing it via an optical element to a patented arrangement of several focal points, this beam shaping technology prevents pores and small holes that would have a fatal effect on the function of the cooling plates. The multifocus technology splits the laser beam into an outer ring and an inner core. This makes it possible to distribute the power of the laser very precisely. Users can use this technology to weld stainless steel and aluminum cold plates at high speed. "Our customers benefit from guaranteed tightness, increased efficiency in production and precise welding results," says Bührle. Batteries that are at the end of their life cycle or are faulty can be dismantled using laser processes so that the valuable components and materials can be recycled and recovered.