Abstract: A rechargeable battery is produced by welding a metal foil to a contact element to make electrical contact with an electrode of the rechargeable battery. An edge region of the metal foil is brought into contact with a first surface of the contact element and welded to the contact element by applying a laser beam to a second surface of the contact element. The second surface being averted from (opposite to) the first surface of the contact element. The metal foil and further planar constituents of the rechargeable battery are wound to provide the rechargeable battery with an at least essentially cylindrical design. The contact element-is oriented at right angles to the metal foil.

Abstract: The invention relates to a method for producing an electrode for an accumulator, wherein an electrode compound is applied to a carrier, in particular a metal foil, by means of an extrusion process. In the extrusion process, the electrode compound is fed through an extrusion die by means of a feeding device. The electrode compound is prepared by mixing in a mixing device and passed on from the mixing device to the feeding device, fluctuations in the flow rate of electrode compound that is passed on from the mixing device to the feeding device being evened out.

Abstract: In order to produce a rechargeable battery (1), a metal foil (3) is welded to a contact element (2) for the purpose of making electrical contact with an electrode of the rechargeable battery (1). Here, according to the invention, an edge region of the metal foil (2) is brought into contact with a first surface (4) of the contact element (2) and welded to the contact element (2) by applying a laser beam (6) to a second surface of the contact element (2), said second surface being averted from the first surface (4) of the contact element (2).