»Automated battery cell characterization before, after, and through aging tests to monitor long-term effects of production changes.«
In this project, the Center for Ageing, Reliability and Lifetime Prediction of Electrochemical and Power Electronic Systems (CARL) at RWTH Aachen University will set up and commission a highly automated test bench for comprehensive cell characterization before and after aging tests of battery cells. This will be combined with an automatically controlled cyclization test bench, which allows individual loading and measurement of the cells during aging tests at defined temperatures.
The aim is the regular, comparable and detailed characterization of battery cells. This will allow the effects of material and process changes in cell production to be investigated, quantified and fed back. For this purpose, a standardized and automated measurement procedure is to be used to collect data from other measurements in addition to the classic parameters such as weight, voltage and 1 kHz resistance.These are complete measurements of the electrochemical impedance (EIS) from the electrical measurements in addition to the cell capacitance and heat and expansion information additionally recorded optically during the measurement cycle.