Increasing throughput in lithium-ion battery production through continuous sub-processes
3 years (01.10.2022 – 30.09.2025)
Funding: 865.868,66 € (TUBS)
Total Project Volume: 2.064.203,64 €
Institute of Machine Tools and Production Technology (IWF), TU Braunschweig
ViscoTec Pumpen- und Dosiertechnik GmbH
Due to the growing demand for electrochemical storage for electromobility and stationary energy storage, high demands are placed on the performance and economic efficiency of electrochemical storage. The central element of these storage systems is the lithium-ion battery cell, which is why efficient battery cell production is the focus of industry and research. In the DuLiPro project, the previously discrete process steps of encapsulation, electrolyte filling and cell sealing are being designed as continuous and web-based processes and linked to form a continuous subprocess chain. The processes will also be supplemented by high-throughput quality assurance methods, so that efficient production at high speed can be achieved while simultaneously reducing rejects.
In the project, the IWF is pursuing the goal of developing novel solutions for various sub-processes and linking them. First of all, a continuous sealing process will be developed so that the web-bound pouch film can be sealed continuously. Furthermore, for the filling process a lock concept into a vacuum chamber as well as a mechanism for continuous filling will be developed. For quality assurance, algorithms are being developed that automatically detect defect images in 2D X-ray inspection. To link the sub-processes, process parameters for maintaining web tension will be determined and a comprehensive control concept will be developed.