Electrode coating system for lithium-ion batteries
In the production of lithium-ion batteries, achieving consistent and precise coating of electrodes is critical. Manufacturers face challenges such as maintaining uniform coat weight, preventing edge curl, and optimizing production footprint while managing high-volume runs.
Achieve precision and efficiency in electrode coating
The electrode coating system from Dürr provides a comprehensive solution for battery manufacturers, integrating advanced technology for both simultaneous two-sided and tandem coating processes. The simultaneous two-sided coating system uses a straight-path product flow and a single coating station, allowing coating of both sides of the foil in one pass without edge curl, thanks to its slot-die coating on a backing roll followed by tensioned-web slot-die coating. This method reduces the overall manufacturing footprint and ensures a non-contact drying process with an air flotation dryer. For high-volume runs, the tandem coating offers a more straightforward single-side coating process, adaptable to large foil widths and less sensitive to foil quality, utilizing either roll support or flotation drying. Specifications include coat weight precision of less than +/- 1%, dimensions and register accuracy of +/- 0.5mm, and coat weight ranging from 70-300g/m2 dry. As a single-source OEM, Dürr supports turnkey coating lines, installation, start-up supervision, and provides 24/7 service and parts support.
Benefits
- Reduces manufacturing footprint with simultaneous two-sided coating
- Prevents edge curl during drying process
- Handles large foil widths efficiently
- Offers precise coat weight control
- Provides comprehensive turnkey solutions and continuous support