The invention relates to a method for determining the position of
electrode sheets (10) in an
electrode-separator
assembly, ESV (4), wherein the
electrode sheets (10) comprise at least two components, namely a substrate (10S) and a double-sided
coating (10B) of the substrate (10S), wherein the electrode sheets (10) comprise at least a first and a second type of electrode sheets (10A, 10K), and wherein the method comprises the following steps: - Optically scanning each electrode sheet (10, 10A, 10K) at least partially in one or more scanning areas; - Determining, based on the
optical scanning, at least one area of a geometry of the substrate (10S) and at least one area of a geometry of the double-sided
coating (10B) of the substrate (10S); - Stacking the electrode sheets (10, 10A, 10K) to form an ESV (4);-
Computed tomographic acquisition of at least one of the two components of the electrode sheets of the first type (10A) in the ESV (4) and at least one of the two components of the electrode sheets of the second type (10K) in the ESV (4) in a
computed tomographic image; - Based on the
computed tomographic image, at least partial determination of a geometry of the respective acquired component; - Alignment of the respective geometries from the optical images with the geometries of the electrode sheets (10, 10A, 10K) in the ESV (4) determined from the
computed tomographic image; - Determination of a position of the substrate (10S) of each electrode sheet (10, 10A, 10K) and its double-sided
coating, wherein the position of components not acquired in the computed
tomographic image is determined from the aligned geometries of the
optical image, so that a position in the ESV (4) is determined for all components of the electrode sheets of the ESV (4).