Abstract: An energy storage cell includes a housing comprising a metallic, tubular housing with a circular opening. The energy storage cell further includes an electrode-separator assembly winding having two terminal end faces and a wound jacket, the electrode-separator assembly comprising an anode, a cathode, and a separator. The energy storage cell additionally includes an at least partly metallic contact element in direct contact with and connected to current collector by welding. The contact element comprises a circular edge and closes the terminal circular opening of the tubular housing portion in a gas- and liquid-tight manner. The contact element is or comprises a metallic membrane electrically connected to a current collector. The metallic membrane is configured to, in response to a pressure in the housing exceeding a threshold, bend such that electrical contact between the contact element and the current collector is lost.

Abstract: An energy storage element includes an electrode-separator assembly in the form of a cylindrical winding having an anode, a separator, and a cathode. The anode includes a ribbon-shaped anode current collector with longitudinal edges and a free edge strip. The cathode includes a ribbon-shaped cathode current collector with longitudinal edges and a free edge strip. The energy storage element further includes a housing closed in an airtight and liquid-tight manner. A first longitudinal edge corresponding to a first free edge strip forms an area on which a metal part covering a first end face of the cylindrical winding lies flat, and a bottom of the housing includes an aperture into which a projection of the metal part is inserted or through which the projection protrudes.

Abstract: An electrochemical energy storage element has a winding assembly with at least two electrode strips wound spirally around a winding axis and at least one separator strip arranged between the electrode strips. The winding assembly has two terminal end faces and an axially aligned cavity in its center. A winding core is arranged in the cavity. In order to increase the safety of the energy storage element, an anchor element is arranged on at least one of the two terminal end faces, the anchor element being connected to the winding core. The anchor element projects laterally from the axial center of the winding assembly at least in certain regions over the end face of the winding assembly.

Abstract: An energy storage cell includes an electrode-separator assembly designed as a cylindrical winding with two terminal end faces. The electrode-separator assembly includes at least one ribbon-shaped positive electrode including a ribbon-shaped cathode current collector with a coating of positive electrode material, at least one ribbon-shaped negative electrode including a ribbon-shaped anode current collector with a coating of a negative electrode material, and at least one separator including at least one separator ribbon arranged between at least one positive electrode and at least one negative electrode so as to separate the electrodes from each other. The separator ribbon includes a first and a second side, each facing one of the electrodes, and a first longitudinal edge and a second longitudinal edge. The separator ribbon has a coating including an inorganic non-conductor on the first side and/or the second side, at least in an area.

Abstract: An energy storage element includes a housing having a metallic, cup-shaped housing part with a housing bottom and a lid component that closes a terminal opening of the cup-shaped housing part. The energy storage element further includes an electrode-separator assembly arranged in the housing, the electrode-separator assembly comprising a first flat terminal end face, a second flat terminal end face, an anode with an anode current collector having a first edge and a second edge parallel thereto, and a cathode with a cathode current collector having a first edge and a second edge parallel thereto. The housing bottom has an aperture closed by a metallic membrane that acts as a primary protection device against internal overpressure, and at least one groove on its inside or outside that acts as a secondary protection device against internal overpressure.

Abstract: An energy storage cell includes an electrode-separator assembly with the sequence first electrode/separator/second electrode. The first electrode is ribbon-shaped and includes a first ribbon-shaped current collector with a first longitudinal edge, a second longitudinal edge parallel thereto, a main region loaded with a layer of first electrode material, and a free edge strip extending along the first longitudinal edge and being not loaded with the first electrode material. The second electrode is ribbon-shaped and includes a second ribbon-shaped current collector with a first longitudinal edge and a second longitudinal edge parallel thereto. The second ribbon-shaped current collector is loaded with a layer of second electrode material and at least one metallic arrester strip is fixed to the second ribbon-shaped current collector. The at least one metallic arrester strip fixed to the second current collector protrudes from the first terminal end face of the electrode-separator assembly.

Abstract: A secondary lithium-ion cell includes an anode having a negative electrode material and a current collector with a strip-shaped main region loaded with a layer of the negative electrode material and a free edge strip not loaded with the negative electrode material. The cell further includes a cathode having a positive electrode material and a current collector with a strip-shaped main region loaded with a layer of the positive electrode material and a free edge strip that is not loaded with the positive electrode material. The cell additionally includes a sheet metal member contacting one of the free edge strips. The anode and the cathode are provided in an electrode-separator assembly with a sequence anode/separator/cathode, the electrode-separator assembly forming a coil with two terminal end faces enclosed in a housing. The negative electrode includes lithium titanate (LTO), and the positive electrode includes lithium manganese oxide (LMO).

Abstract: An electrochemical energy storage element includes an electrode-separator assembly that includes an anode, a cathode, and at least one separator or solid electrolyte. The anode and cathode each include an anode current collector in the form of an electrically conductive substrate having a top side, a bottom side, and an edge. The anode current collector and/or the cathode current collector includes a main region loaded on both sides with a layer of electrode material and an edge region not loaded with the electrode material that extends in a strip-shaped manner along the edge of the current collector. The electrode-separator assembly has a side from which a respective edge protrudes. A respective edge region extending along the respective edge is partially or completely coated with an electrically non-conductive layer of a support material.

Abstract: An energy storage cell includes an electrode-separator assembly winding with a first terminal end face, a second terminal end face, and a winding shell located therebetween. The energy storage cell further includes an airtight and liquid-tight housing that includes a metallic housing cup with a terminal circular opening, a lid assembly with a circular edge, and an annular seal that encloses the circular edge and electrically insulates the housing cup and the lid assembly from one another. The metallic housing cup includes a central section and a closure section. In the closure section, the annular seal is in press contact with the lid assembly and the metallic housing cup has an opening edge that is bent radially inwards over the circular edge of the lid assembly. A wall thickness of the radially inwardly bent opening edge is greater than a wall thickness of the central section.

Abstract: An energy storage element includes an air- and liquid-tight housing. The housing includes a metallic, cup-shaped housing part with a housing bottom and a terminal opening. The housing further includes a lid component welded into and closing the terminal opening of the cup-shaped housing part, the lid component including a metallic lid plate and a negative terminal passed through an aperture in the lid plate and electrically insulated from the lid plate. The energy storage element also includes an electrode-separator assembly having a first flat terminal end face, a second flat terminal end face, an anode with an anode current collector having a first edge and a second edge parallel thereto, and a cathode with a cathode current collector having a first edge and a second edge parallel thereto. A contact sheet metal member is seated on the first edge of the anode current collector and connected thereto by welding.

Abstract: A secondary lithium ion cell includes an electrode-separator assembly in the form of a winding with two terminal end faces. The electrode separator assembly comprising an anode, a cathode, and a separator. The anode comprises an anode current collector comprising a first longitudinal edge, a second longitudinal edge, a strip-shaped main region, and a free edge strip extending along the first longitudinal edge. The strip shaped main region of the anode current collector is loaded with a layer of negative electrode material and the free edge strip of the anode current collector is not loaded with the negative electrode material. The layer of negative electrode material comprises metallic lithium. The cathode comprises a cathode current collector comprising a first longitudinal edge, a second longitudinal edge, a strip-shaped main region, and a free edge strip extending along the first longitudinal edge.

Abstract: An energy storage element includes an assembly comprising a plurality of anodes, each respective anode of the plurality of anodes comprising an anode current collector having a main region loaded with a layer of negative electrode material and a free edge strip. The energy storage element further includes a plurality of cathodes, each respective cathode comprising a cathode current collector having a main region loaded with a layer of positive electrode material and a free edge strip. The anodes and the cathodes are stacked and are separated by separators or layers of a solid state electrolyte and the assembly is enclosed in a prismatic housing. The free edge strips of the anode current collectors protrude from one side of the assembly and the free edge strips of the cathode current collectors protrude from another side of the assembly.

Abstract: The invention relates to an energy storage cell (100) in the form of a cylindrical round cell having an outside diameter of al least 30 mm, comprising an electrode-separator composite (104) having the following sequence: anode, separator, cathode. The electrode-separator composite (104) is in the form of a hollow cylindrical winding having two terminal end faces and having a winding casing lying therebetween. The energy storage cell comprises a housing, which surrounds a hollow cylindrical interior.

Abstract: An energy storage element includes a sealed housing and an electrode-separator assembly disposed therein. The housing includes a metallic cup-shaped housing part having a housing bottom, a circumferential side wall, and a terminal opening, and a lid assembly closing the terminal opening of the cup-shaped housing part. One edge of an anode current collector or of a cathode current collector is electrically connected to the housing bottom and another edge is electrically connected to a contact sheet metal member which is directly seated on this edge. The lid assembly includes a metallic cover plate and a terminal pole which is guided through an aperture in the cover plate and is electrically insulated from the cover plate. The terminal pole is seated directly on the contact sheet metal member and is connected thereto by welding. Furthermore, the terminal pole is electrically insulated from the cover plate by a cured potting compound.

Abstract: An energy storage cell includes a housing comprising a metallic, tubular housing with a circular opening. The energy storage cell further includes an electrode-separator assembly winding having two terminal end faces and a wound jacket, the electrode-separator assembly comprising an anode, a cathode, and a separator. The energy storage cell additionally includes an at least partly metallic contact element in direct contact with and connected to current collector by welding. The contact element comprises a circular edge and closes the terminal circular opening of the tubular housing portion in a gas- and liquid-tight manner. The contact element is or comprises a metallic membrane electrically connected to a current collector. The metallic membrane is configured to, in response to a pressure in the housing exceeding a threshold, bend such that electrical contact between the contact element and the current collector is lost.

Abstract: A lithium-ion cell includes a housing comprising a metallic tubular housing part made of aluminum or an aluminum alloy with a terminal circular opening. The cell further includes a contact element that closes the terminal circular opening of the tubular housing part, the contact element comprising a metal disk, a contact sheet metal member, a metal pole pin and an insulator. In addition, the cell includes an electrode-separator assembly having an anode, a cathode, and a separator with the sequence anode/separator/cathode. The electrode-separator assembly is in the form of a cylindrical winding with two terminal end faces and a winding shell located therebetween. The electrode-separator assembly is disposed in the winding and is axially aligned so that the winding shell abuts an inside of the tubular housing part.

Abstract: A an energy storage cell includes an electrode-separator assembly comprising an anode, a cathode, and a separator in a form of a cylindrical winding having two terminal end faces and a winding shell. An anode current collector includes a first longitudinal edge, and a cathode current collector includes a first longitudinal edge. The energy storage cell also includes a tubular housing portion in which the cylindrical winding is aligned axially. An at least partly metallic contact element with a circular edge is in direct contact with and connected the first longitudinal edge of the anode current collector or the first longitudinal edge of the cathode current collector. The energy storage cell further includes an annular seal made of an electrically insulating material that surrounds the circular edge of the contact element. The contact element together with the seal closes a terminal circular opening of the tubular housing portion.

Abstract: A method for producing a component of an electrochemical cell includes applying at least one layer of an electrode material to a strip-shaped current collector passing through a coating apparatus such that the current collector, after passing through the coating apparatus, comprises one or more coated strip-shaped sections oriented in a longitudinal direction and being coated with electrode material and one or more uncoated strip-shaped sections oriented in the longitudinal direction. The method further includes assigning a respective uncoated strip-shaped section of the one or more uncoated strip-shaped sections a machine-readable coding that identifies the respective uncoated strip-shaped section. The machine-readable coding is assigned in the form of through holes into the respective uncoated strip-shaped section, or the coding is applied onto the respective uncoated strip-shaped section.

Abstract: A lithium-ion cell includes a ribbon-shaped electrode-separator assembly having an anode, a separator, and a cathode in a sequence anode/separator/cathode. The anode has a ribbon-shaped anode current collector having a first longitudinal edge, a second longitudinal edge, and two ends, wherein the anode current collector has a strip-shaped main region loaded with a layer of negative electrode material and a free edge strip extending along the first longitudinal edge that is not loaded with the electrode material. The cathode has a ribbon-shaped cathode current collector, wherein the cathode current collector has a strip-shaped main region loaded with a layer of positive electrode material and a free edge strip extending along the first longitudinal edge that is not loaded with the electrode material. The negative electrode material containing the at least one active material in a range of from 20 wt % to 90 wt %.

Abstract: A lithium-ion cell includes a ribbon-shaped electrode-separator assembly having an anode, a cathode, and a separator. The electrode-separator assembly is in the form of a winding with two terminal end faces. The anode has a ribbon-shaped anode current collector with a free edge strip extending along a first longitudinal edge that is not loaded with negative electrode material. The cathode has a ribbon-shaped cathode current collector with a free edge strip extending along a first longitudinal edge that is not loaded with positive electrode material. The separator has at least one inorganic material that improves its resistance to thermal stress. The lithium-ion cell further includes a housing enclosing the electrode-separator assembly and a metallic contact element. The metallic contact element is connected to a respective first longitudinal edge of one of the current collectors by a weld.