Abstract: A battery storage system that has at least two battery modules, each of which has a plurality of electrochemical energy storage cells. Each battery module has at least one external contacting device for connection to another battery module of the battery storage system. The contacting devices comprise at least one connection for power and/or data signals. Adjacent battery modules within the battery storage system are electrically connected to one another via the contacting devices. The battery storage system is characterized in that the contacting devices are each surrounded by a circumferential mechanical guide and in that at least one gas passage opening is provided in the area of the contacting devices within the circumferential mechanical guide, via which a gas exchange can take place between adjacent battery modules.

Abstract: A ribbon-shaped electrode has a ribbon-shaped current collector and a coating with electrode material on one or both sides, wherein the ribbon-shaped current collector includes a first and a second longitudinal edge, the first longitudinal edge is designed as a contact edge, the contact edge is used for electrical contacting of the electrode and the contact edge is not coated with the electrode material, the second longitudinal edge is formed as a supporting edge which is not coated with the electrode material, and the width of the supporting edge is at most 99% of the width of the contact edge.

Abstract: An electrolyte hydrogel for an electrochemical cell includes a self standing polymer network with a crosslinked, non-ionic polymer and a cationic polymer and a salt in an aqueous solvent and/or dispersant.

Abstract: An adapter that is provided for coupling a battery management device with at least one inverter and/or battery. The adapter comprises or is a printed circuit board with at least one plug-in device for plugging the printed circuit board into the battery management device. The printed circuit board further comprises at least one plug connector, in particular an edge connector. The printed circuit board has a conductor structure that assigns interfaces for communication signals and/or control signals and/or supply voltages that are provided by the battery management device, to the matching pins of a plug connector of the at least one inverter and/or battery.

Abstract: An energy storage element includes a housing enclosing an interior space, which housing is formed of a first metal housing part and a second metal housing part and has a substantially circular upper side and a substantially circular lower side spaced from one another and parallel to one another, and an annular housing side that connects the upper side and the lower side; a winding arranged in the interior, which winding includes a strip-shaped positive and a strip-shaped negative electrode and a strip-shaped separator arranged between the electrodes that are wound in a spiral around a winding axis; wherein the winding has a first end face and a second end face and an annularly circumferential winding outer side, the first and second end faces face in the direction of the circular and mutually parallel upper side and lower side such that the winding axis is oriented perpendicular or at least substantially perpendicular to the upper side and the lower side, and the winding has an axial cavity through which the

Abstract: The invention relates to a lithium-ion cell (1) for an energy storage unit of a motor vehicle, having at least one anode (3), at least one cathode (4), an electrolyte and a separator (7) arranged between the cathode (4) and anode (3) in the electrolyte, and having a reference electrode (8) for determining a voltage potential of the lithium-ion cell (1). The reference electrode (8) is produced from lithium titanate.

Abstract: An electrochemical cell includes a cylindrical housing that encloses an interior space having a first end face and a second end face that are interconnected by an annular shell, and a positive and a negative electrode are arranged in the interior of the housing, wherein the negative electrode is electrically connected, either directly or via a separate conductor, to the first end face to constitute a negative pole, and the positive electrode is electrically connected, either directly or via a separate conductor, to the second end face to constitute a positive pole, and a contact lug is fastened to the first or second end face of the housing.

Abstract: A packaging unit adapted to contain at least two button cells includes: for each of the button cells, a separate individual compartment that encloses the button cells; the individual compartments are each formed from a separate thermoformed plastics hood and a back plastics film fixed thereto; the individual compartments are configured such that they cannot be opened without tools; a carrier on which the individual compartments are attached; and the individual compartments are spaced apart from one another on the carrier.

Abstract: Visibility packaging for energy storage elements includes a front wall spaced apart from a rear wall and provided with at least one viewing cutout and at least one web having a central apex region fixed to a contact region of the rear wall, wherein the web and the rear wall together form a K-shaped cross section in a closure position and the web closes a removal opening of a receiving space, and the rear wall has at least one perforation that delimits a contact region from a remainder of the rear wall and makes it possible to separate the contact region from the rear wall such that the web can be transferred by a folding operation into a removal position in which the apex region of the web is spaced apart from the rear wall and the web frees the removal opening of the receiving space.

Abstract: A method of producing a battery with a prismatic battery housing includes assembling a battery housing from two prefabricated housing parts, of which the first housing part includes at least a partial region of the element including the at least one through hole as well as at least a partial region of a second element, bordering on the element including the at least one through hole, and the second housing part includes all elements and/or partial regions of elements not part of the first housing part.

Abstract: A cell module stores electrical energy, a battery has such a cell module and a module housing for such a cell module. The module housing includes an internal space in which n cells each having at least one positive and at least one negative electrode are arranged. In this case, n?2 and the module housing here has at least three external electrical connection poles. The battery includes at least two such cell modules. The module housing includes at least three apertures through which electrical conductors are guided from the inside of the module housing to the outside.

Abstract: A metal/air button cell includes a cell cup having at least one inlet opening via which atmospheric oxygen can enter the interior, the cell cup has an inner side facing the interior, and an oppositely directed outer side, an air cathode is in the form of a cathode disk with a circumferential cathode disk periphery, the air cathode includes a metal collector structure, the cathode disk is arranged such that the cathode disk periphery bears along a circumferential contact zone against the inner side of a cladding region, the cell cup has, on its outer side, at least one recess made by impression and becomes visible as a raised portion on the inner side, and the at least one recess is made in the outer side such that the raised portion exerts a pressure against the cathode disk periphery in the region of the contact zone.

Abstract: A cylindrical cell includes a. a cylindrical housing enclosing an interior space and composed of a first and a second metal housing part, wherein the housing includes, at its axial ends, a first planar end face and a second planar end face connected to one another by an annular casing, b. a positive electrode and a negative electrode, at least one of which can intercalate and/or deintercalate lithium ions, wherein the positive electrode electrically connects to the first housing part directly or via a separate electrical conductor, and the negative electrode electrically connects to the second housing part directly or via a separate electrical conductor, c. a first contact lug configured as a sheet-metal part that is welded onto the first end face and which has a planar section extending in a plane parallel to the first end face, and d.

Abstract: A method of determining a state or a state change of an electrochemical energy storage device that includes a housing composed of a multilayer composite film, wherein the housing includes a first housing part and a second housing part composed of the multilayer composite film, which parts are joined to one another, and together enclose a hollow space in which the composite is arranged, and the composite film includes a ply composed of a metal layer and also two plies composed of polymer, with the metal layer being arranged between the two polymer plies, wherein to determine the state or the state change, an electric potential is applied to the metal layers of the first housing part and the second housing part so that an electric field arises between the metal layers and an electrical parameter influenced by a change of a spacing between the metal layers is determined.

Abstract: A secondary energy storage element includes a reference electrode or a constituent thereof positioned between at least one ply of a separator layer and one of electrode layers and electrically insulated from the electrode layer by an insulating means, the reference electrode or the constituent thereof positioned such that there is at least one metal filament or a sheet-shaped metallic coating on a surface of the at least one ply of the separator layer or a surface of the insulating means, within an overlap region the at least one metal filament or the sheet-shaped metallic coating is arranged on the surface of a ply of the separator layer or a surface of the insulating means, and the at least one metal filament or the sheet-shaped metallic coating covers on the surface an area of a maximum of 5% of the area over which the overlap region extends.

Abstract: A method of producing an electrode-separator winding includes feeding a first current collector, feeding a second current collector, feeding two separators in strip form to a winding device, and winding the first and second current collectors and the separators to form a winding with a sequence, wherein a contact strip is welded on at least one of the contact sections of the current collectors, or at least one of the contact sections is folded over to form a contact strip, and at least one of the separators is reinforced in at least one risk region in which the at least one separator within the completed electrode-separator winding lies against the at least one contact section in which the contact strip is welded on or against the at least one contact section folded over to form a contact strip.

Abstract: A modular battery storage system includes energy storage modules. A switch is assigned to individual energy storage modules, by which the respective energy storage module can be activated and deactivated. The energy storage modules can connect to one another by the switches such that the individual voltages of activated energy storage modules can be added up to form a total voltage. A method of operating the battery storage system ascertains at least one power value for each of the energy storage modules, the power value being characteristic of the power capacity of the energy storage module. A total voltage is generated by at least two energy storage modules being activated with a time overlap but over activation periods of different length. One of the activation periods of different length is assigned to each of the at least two energy storage modules depending on the ascertained at least one power value.

Abstract: A battery of modular construction that stores electrical energy includes a battery housing, a module assembly including at least two battery modules, each with at least one positive and at least one negative electrode, and a pressing means. A method of safety operation of the battery includes equipping the battery with at least one safety means that triggers a reduction in the mechanical pressure exerted onto the battery modules when there is a defect in at least one of the battery modules.

Abstract: An electrochemical cell includes an annular electrode composite body; and an annular liquid-tight housing formed as a hollow cylinder and including an annular interior space, wherein the housing is arranged around a central aperture or recess, the housing has a height of 5 mm to 40 mm and an external diameter of 6 mm to 20 mm, and the annular electrode composite body is arranged in the annular interior space.

Abstract: A battery has a prismatic metal housing that includes a rectangular base having a base inner side and a base outer side, a rectangular cover having a cover inner side and a cover outer side, the size and shape of which substantially correspond to that of the base, and four rectangular side elements connecting the base and the cover and each have an inner side and an outer side. The at least one individual cell is a winding having a first and a second end face and the first end face faces in the direction of the base and the second end face faces in the direction of the cover. Conductor vanes electrically connect to the base of the metal housing exit from the first end face. These are fixed to an electrically conductive collecting and positioning means inserted into a receiving means in the base of the metal housing and fixed therein.