Abstract: A process for joining a battery element (49) by at least one polymer thread (28, 30), comprises the method steps: a) applying a web-shaped or sheet-shaped electrode material (16) to a first separator web (12), b) heating the at least one polymer thread (28, 30) above the softening temperature of the polymer material, c) introducing at least one polymer thread (28, 30) between the first separator web (12) and a further second separator web (40) to be applied to the first separator web (12), and d) cooling the at least one polymer thread (28, 30) between the separator webs (12, 40) and forming at least one material-bond compound (46, 48) therebetween.

Abstract: The invention relates to a method for producing an electrode stack for a battery cell, comprising the following steps: providing a strip-shaped anode element (45) comprising an anodic current discharger (31) to which an anodic active material (41) is applied; providing a strip-shaped cathode element (46) comprising a cathodic current discharger (32) to which a cathodic active material (42) is applied; providing at least one strip-shaped separator element (16); introducing grooves (70) into the cathodic active material (42) around segmentation lines (S); generating a strip-shaped composite element (50) by applying the cathode element (46) onto the anode element (45), with the interposition of the at least one separator element (16); cutting the composite element (50) into plate-shaped composite segments at the segmentation lines (S); and stacking the composite segments.

Abstract: A method for welding a flexible film (10) to a carrier component (20) having the following steps: 1) pressing the film (10) on the carrier component (20) by a volumetric flow of a fluid, and 2) laser welding the film (10) on the carrier component (20).

Abstract: The invention relates to an electrically conductive base material (112) for receiving a coating material (114) which comprises electrically conductive particles (116), a method for the production thereof and the use thereof as current collector for an electrode material comprising electrically conductive particles. The base material (112) comprises a metal foil, wherein at least one surface (118) of the base material (112) provided for receiving the electrically conductive particles (116) has a first structure (120) and a second structure (122), wherein the first structure (120) has first ridges (124) and/or first grooves (126) relative to the surface (118) of the base material (112) and wherein the second structure (122) has second ridges (128) and/or second grooves (130) relative to the surface (132) of the first structure (120).

Abstract: The invention relates to a Method for cutting a separator foil (41) for an electrode assembly for a battery cell, the separator foil (41) containing a polymer layer (45) and a ceramic layer (46), by dint of a laser beam (80), the laser beam (80) being emitted by an ultrashort pulse laser and consisting of ultrashort pulses of light, whereat the laser beam (80) propagates in a propagation direction (z) and is linear polarized in a vertical direction (x), and whereat the laser beam (80) is directed onto the separator foil (41) and is moved along the separator foil (41) in a cutting direction (s). The invention also relates to a separator foil (41) cut using the method according to the invention and a battery cell containing at least one such separator foil (41).

Abstract: The invention relates to a method for producing an electrode stack for a battery cell, comprising the following steps: providing a strip-shaped anode element (45) comprising an anodic current discharger (31) to which an anodic active material (41) is applied; providing a strip-shaped cathode element (46) comprising a cathodic current discharger (32) to which a cathodic active material (42) is applied; providing at least one strip-shaped separator element (16); introducing grooves (70) into the cathodic active material (42) around segmentation lines (S); generating a strip-shaped composite element (50) by applying the cathode element (46) onto the anode element (45), with the interposition of the at least one separator element (16); cutting the composite element (50) into plate-shaped composite segments at the segmentation lines (S); and stacking the composite segments.

Abstract: A process for joining a battery element (49) by at least one polymer thread (28, 30), comprises the method steps: a) applying a web-shaped or sheet-shaped electrode material (16) to a first separator web (12), b) heating the at least one polymer thread (28, 30) above the softening temperature of the polymer material, c) introducing at least one polymer thread (28, 30) between the first separator web (12) and a further second separator web (40) to be applied to the first separator web (12), and d) cooling the at least one polymer thread (28, 30) between the separator webs (12, 40) and forming at least one material-bond compound (46, 48) therebetween.

Abstract: The invention relates to an electrically conductive base material (112) for receiving a coating material (114) which comprises electrically conductive particles (116), a method for the production thereof and the use thereof as current collector for an electrode material comprising electrically conductive particles. The base material (112) comprises a metal foil, wherein at least one surface (118) of the base material (112) provided for receiving the electrically conductive particles (116) has a first structure (120) and a second structure (122), wherein the first structure (120) has first ridges (124) and/or first grooves (126) relative to the surface (118) of the base material (112) and wherein the second structure (122) has second ridges (128) and/or second grooves (130) relative to the surface (132) of the first structure (120).

Abstract: The invention relates to an electrolyte battery electrode component having a layer having a surface adjoined by electrolyte in the battery and provided with a fluid-conducting channel structure. In this context, it is envisaged that through the fluid-conducting structure has channels having channel depths in the range from 10 to 200 ?m and/or at least 50% of the thickness of the active layer.