Abstract: A method for determining a position of corners of polygonal electrode sheets in at least one corner region of an electrode assembly stack, comprising the steps: 3D imaging of the corner region of the electrode assembly stack in an imaging region by means of an imaging process, so that a data set is created that includes 3D position information on the electrode sheets in the corner region of the electrode assembly stack relative to a carrier or to a marker arranged in the imaging region; and determining, from the data set, a first and a second edge profile of the edges framing the corner region of each electrode sheet. A position of the corner of the respective electrode sheet is determined on the basis of the edge profile. The electrode sheets and the edges thereof can be determined via a neural network system.

Abstract: A method for determining the placement accuracy of a plurality of electrode sheets, wherein the electrode sheets extend on mutually parallel planes and are stacked on top of one another and form a stack; wherein the placement accuracy describes positions of the edges of all of the electrode sheets relative to one another in the stack; wherein the method is carried out using a measuring device having a two-dimensionally resolving X-ray system with at least one beam source for X-ray radiation and a detector.

Abstract: A battery case for a battery cell. The battery case includes a base body that encloses, at least in areas. A chamber for accommodating galvanic components. A plurality of ventilation openings that connect the chamber to the surroundings of the base body. A plurality of ventilation lines that extend on an inner side of the base body facing the chamber and that are fluidically coupled to at least a portion of the plurality of ventilation openings. The plurality of ventilation lines extending in a material that forms the base body. A battery cell with such a battery case and a battery arrangement are also provided.

Abstract: A solid-state electrolyte (for an electrode layer of a solid-state battery has a core made of a core material and a shell layer surrounding the core and made of a shell material, wherein the core material has a crystalline structure, and the shell material has an amorphous structure, and wherein the core material and the shell material have the same chemical composition.

Abstract: A method for producing a cell stack (57) for battery cells (8) comprises at least the following steps: a) feeding in at least a first material strip (3) comprising a first material; b) making a first cut into at least the first material strip (3), thereby forming at least one strip-like transport section (18) having tensile strength; c) combining the first material strip (3) with at least a second material strip (22, 27) comprising a second material, in order to form a partial stack (31); d) attaching the partial stack (31) thus formed at a first attachment site by means of a first movable clamping apparatus (32); e) replenishing at least one material strip (22, 27) and attaching the partial stack (31) thus formed at a second attachment site by means of a second movable clamping apparatus; f) making a second cut of the attached partial stack (31), whereby the transport section (18) is cut off; g) opening the clamping apparatuses (32, 33); and h) arranging at least two partial stacks (31) to form a cell stack

Abstract: A method for producing a cell stack for battery cells comprises at least the following steps: feeding in at least a first material strip consisting of a first material; making a first cut into at least the first material strip while forming at least one transport section having tensile strength; combining the first material strip with at least a second material strip consisting of a second material, so as to form a partial stack; making a second cut of the partial stack, whereby the transport section is cut open; and arranging at least two partial stacks so as to form a cell stack.

Abstract: A method for manufacturing a component, the component having a multiplicity of cell foils for storing electrical energy that are stacked on top of one another and at least one contact plate, wherein the cell foils form a foil stack in a connection portion, and the foil stack is connected to the contact plate by at least one weld seam for the electrical contacting of the cell foils via the contact plate. Furthermore, a corresponding component and a device for manufacturing such a component are also specified.

Abstract: An energy accumulator, in particular for a motor vehicle, has a secondary cell with two complementary electrodes, a separator spacing them apart, a cell housing which encloses the electrodes and the separator, and an electrolyte with which the cell housing is filled. In addition, hollow glass spheres are located within the cell housing, which are filled with a quantity of the electrolyte and/or an additive and which are in contact with the electrolyte accommodated in the cell housing.