In battery production, electrodes are manufactured in a roll-to-roll process. In order to be able to produce pouch cells from these, they must therefore be separated in an intermediate step. Common processes here are mechanical cutting and laser cutting. Laser beam welding is wear-free. However, it results in particle contamination, which can in principle penetrate the separator and have a negative impact on battery functionality. The Hi-Pot test has proven to be a quick and simple method of checking for damage to the separator. However, the method is highly dependent on the type of separator and the applied pressure.
The purpose of the work is to evaluate the influence of particle contamination by the Hi-Pot test. This should be done depending on the separator material and the pressure. For this purpose, electrodes must first be assembled and provided with a defined amount of impurities. Electrode-separator composites are then tested with the Hi-Pot Test.
Scope of the work:
The student work can be carried out as part of a Bachelor's, student research project or Master's thesis.
By arrangement, preferably immediately.