Method and apparatus for manufacturing a cell stack for battery cells

A method for producing a cell stack for battery cells, said method comprising at least the following steps:

• a) feeding in at least a first elongated material strip consisting of a first material;
• b) making a first cut into at least the first elongated material strip, thereby forming at least one continuous transport section having tensile strength and being configured to absorb tensile forces in a longitudinal direction of the first elongated material strip so that the first elongated material strip can be processed as a continuous material strip in subsequent steps, and creating within the continuous transport section at least one hole as a transport engagement means that is configured to be engaged by drives with mechanical elements to convey the first elongated material strip in the longitudinal direction, and;
• c) combining the first elongated material strip with at least a second elongated material strip consisting of a second material, so as to form a partial stack;
• d) making a second cut of the partial stack comprising a cut in a transverse direction of the first and second elongated material strips, whereby the continuous transport section is cut across and a complete division of the partial stack in produced in the transverse direction;
• and
• e) arranging at least two partial stacks so as to form a cell stack,
• wherein the first material strip and the second material strip are cut to different dimensions encompassing different width and different length.