Laser‐Based Joining of Electrode Stacks for Automated Large‐Scale Production of Li‐Ion Battery Cells

Battery technology is the basis for electrification of mobility and key to a sustainable future. Herein, lithium‐ion battery (LIB) cells are experiencing increasing demand, especially in automotive industry. To meet rising needs, highly productive cost‐efficient processes cell production need be available. Within joint project HoLiB—High Throughput Processes Lithium Ion Manufacturing, continuous manufacturing process developed, set up, evaluated. The aim separate, batch, contact stack within cycle time two seconds. joining individual electrodes each other particular importance. should enable contacting both specified time, while aluminum copper process‐reliable manner. These requirements met by laser beam welding. energy input localized fast processing enables materials very short time. This article describes development laser‐based electrode stacks with arrester tabs. For this purpose, three sources “blue”, “green,” near‐infrared wavelengths tested evaluated requirements.