The Cellforce Group, a joint venture of sports car manufacturer Porsche and battery specialist CUSTOMCELLS, built up the mass production process for coating its electrodes over the past 12 months.
The Cellforce Group and machinery and plant manufacturer Dürr jointly commissioned a high-tech coating facility for high-performance battery cells in Bietigheim-Bissingen.
Specifically, the Cellforce Group (CFG) will soon be using a special process from Dürr that enables both sides of the electrode to be coated simultaneously. In this way, the coating process can be accelerated and the precision and quality significantly increased when compared to the standard procedure.
In conventional processes, the anode and cathode materials are not applied simultaneously but rather one after the other on both sides of a thin metal foil.
In order to successfully commission and establish the process, the Cellforce Group has been on site at Dürr in Bietigheim-Bissingen for several months and has implemented production on a factory line.
Processes ready for a new Cellforce Group site
The technology for the double-sided electrode coating was developed by Dürr's US subsidiary Megtec, which was acquired in 2018.
The Cellforce Group is currently building a state-of-the-art development and production site for battery cells in the Reutlingen-Kirchentellinsfurt industrial park. Once this new site is completed, the production processes set up at Dürr can be taken over and continued directly.
To ensure sustainable operation of the coating line, Dürr is also supplying equipment for exhaust air purification and the recovery of more than 99% of the solvents used.