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Project manager: Prof. Dr. Volker Wesling
Funding period: 01.01.2023 - 31.12.2025
Funding agency: BMBF - PTJ
Responsible person: Dipl.-Ing. Tassilo Söldner
The aim of the CZM research project is to develop an automated process for replacing battery elements from accumulator stacks. This is to be realized through the use of robotics, ablative manufacturing and laser welding.
In the overall project, the project partners will record and evaluate the ageing condition of individual battery elements in accumulator stacks. This is important in order to identify prematurely aged elements in the stack, which should then be exchanged and replaced with new ones. The battery stack modified in this way can then be used in a stationary environment.
The battery elements are connected to each other in a stack by cell arresters. The thin sheet thicknesses of the cell arrestors must be taken into account when removing and automating the process. The cell arrestors are to be rejoined either by laser welding or laser soldering. A process must be designed in which the battery cell arresters are rejoined with minimal energy input in order to avoid damaging the battery elements, while the weld seams must be mechanically durable even with intermetallic connections and the electrical conductivity of the connections must remain high.