In battery factories, solvents are used in the manufacture of electrodes, more specifically in the coating of electrode foil. CATL’s plan in Arnstadt is to run multiple coating lines, each of which will be equipped with a Dürr system for solvent recovery. This makes production not only eco-friendly but also efficient, because the solvent used is expensive and must therefore be recovered and fed back into the production process for multiple use. Dürr’s Sorpt.X LC technology, in combination with a distillation system, ensures over 95% of the recovered solvent can be reused at the required quality.
Dr. Jochen Weyrauch, CEO of Dürr AG, said: “With CATL we have gained another customer in the up-and-coming market of battery production technology. Our technology will make a major contribution in helping CATL produce its electrodes in a way that is both sustainable and economical.” He also emphasized the importance of the battery sector for electromobility: “More battery cells are required for electromobility to prevail. This is leading to the construction of new battery factories, especially in Europe. The production processes these use ultimately play a critical role in determining the size of an electric vehicle’s environmental footprint.”
Cooperation for further growth in battery production
The Dürr Group is planning further growth in the business field of battery production. In September, the company therefore announced its alliance in the battery sector with the German mechanical engineering firms Grob and Manz. The three partners want to combine their technologies and expertise to establish themselves as an end-to-end supplier for the equipment of entire battery factories. This market is currently dominated mainly by Asian mechanical engineering firms. However, many battery manufacturers who intend to build factories in Europe would like partners from the European mechanical engineering market, so they can source their production systems locally. Dürr, Grob, and Manz are addressing this need through their cooperation. In this, Dürr is responsible for electrode manufacture, while Manz covers battery cell assembly and Grob delivers technology for the assembly of the battery packs. Dr. Jochen Weyrauch stated: “The combined technology offering of Dürr, Grob, and Manz makes for highly efficient manufacturing processes with maximum digitalization, a high level of availability, and excellent product quality. This enables both mass and premium manufacturers to produce exactly the right battery types for their requirements.”