FLEXIBLE BATTERY CELL TESTING OF GEOMETRICAL PARAMETERS TO IMPROVE THE SUSTAINABILITY OF BATTERIES OVER THE ENTIRE LIFE CYCLE

Ensuring the sustainability of battery production and usage is critical in today's energy landscape. The battery lifecycle demands 100% inspection of battery cells to optimize resource utilization and minimize waste. Establishing geometrical tolerance limits is crucial due to the lack of previous empirical data. Only by combining geometrical, gravimetric, electrical, and chemical parameters can a comprehensive condition assessment of battery cells be achieved. Setting tolerance limits too narrowly leads to high rejection rates, affecting both cell production and subsequent assembly into modules and packs. A flexible cell tester that inspects the geometrical conditions of battery cells is essential. This system adapts to a rapidly changing product portfolio and functions as a mobile device. The tester is useful not only in battery production but also for state estimation for second-life applications, significantly contributing to the sustainability of the battery lifecycle. The need for the inspection of geometrical battery cell parameters is given by the product specific deviation of dimensions. As the demand for batteries grows and the need for environmentally friendly production methods increases, the cell tester ensures efficient and sustainable battery cell production and utilization. This represents a crucial step toward a more sustainable future, meeting the dual goals of efficient production and waste minimization.