Patents by Inventor Stefan Stock
Stefan Stock has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230307802Abstract: 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.Type: ApplicationFiled: August 25, 2021Publication date: September 28, 2023Inventors: Stefan Stock, Martin Fuerst, David Ensling, Martin Elmer
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Publication number: 20230223581Abstract: An electrochemical cell includes a winding comprising a ribbon-shaped negative electrode with an anode current collector and a ribbon-shaped positive electrode with a cathode current collector. An assembly comprises the negative electrode and the positive electrode, the assembly is wound spirally around a winding axis to form the winding, the winding comprises a central cavity, two terminal end faces, and a circumferential winding shell. The electrochemical cell further includes a contact sheet metal member in direct contact with a protruding longitudinal edge of the anode current collector or the cathode current collector. In addition, the electrochemical cell includes a housing, a sensor apparatus configured detect changes in a state of the winding, and a display and/or a contact configured to display measured values and/or via which the measured values can be transmitted.Type: ApplicationFiled: April 28, 2021Publication date: July 13, 2023Inventors: Stefan Stock, Edward Pytlik, David Ensling, Martin Elmer
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Patent number: 11664554Abstract: 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.Type: GrantFiled: July 22, 2015Date of Patent: May 30, 2023Assignees: VARTA Microbattery GmbH, VW Kraftwerk GmbHInventors: Andreas Gaugler, Andreas Huth, Werner Schreiber, Stefan Stock
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Publication number: 20220231301Abstract: An electrochemical cell including an electrode-separator composite having an anode, at least one separator and a cathode, wherein the anode comprises an anode current collector having a surface consisting of at least one metal and has been laden with at least one layer of a negative active electrode material, the cathode comprises a cathode current collector having a surface consisting of at least one metal and has been laden with at least one layer of a positive active electrode material, and the surface of the anode current collector and/or the surface of the cathode current collector comprises at least one clear region not laden with the respective active electrode material, and in the at least one clear region the surface of the anode current collector and/or the surface of the cathode current collector has been coated with a support material of greater thermal stability than the surface coated therewith.Type: ApplicationFiled: May 19, 2020Publication date: July 21, 2022Inventors: Bernd Beck, David Ensling, Rainer Hald, Edward Pytlik, Stefan Stock
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Patent number: 11121410Abstract: 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.Type: GrantFiled: April 2, 2019Date of Patent: September 14, 2021Assignee: VARTA Microbattery GmbHInventors: David Ensling, Stefanie Scholz, Stefan Stock, Ihor Chumak
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Patent number: 10615400Abstract: A battery includes a housing, at least one individual cell arranged in the housing and including at least one positive electrode and at least one negative electrode, a positive pole stud passed through the housing and electrically connected to the at least one positive electrode and/or a negative pole stud passed through the housing and electrically connected to the at least one negative electrode, at least one electrical switch which can be pneumatically operated and changes its switching state in the event of an increase in pressure within the housing beyond a threshold value and thereby interrupts the electrical connection between at least one of the pole studs and an associated at least one electrode, and a resetting device with which an electrical connection which is interrupted as a result of a change in the switching state can be re-established without the housing having to be opened.Type: GrantFiled: April 24, 2014Date of Patent: April 7, 2020Assignees: VW Kraftwerk GmbH, VARTA Microbattery GmbHInventors: Andreas Gaugler, Konrad Holl, Stefan Stock, Werner Schreiber
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Publication number: 20190312312Abstract: 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.Type: ApplicationFiled: April 2, 2019Publication date: October 10, 2019Inventors: David Ensling, Stefanie Scholz, Stefan Stock, Ihor Chumak
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Publication number: 20170229681Abstract: 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.Type: ApplicationFiled: July 22, 2015Publication date: August 10, 2017Inventors: Andreas Gaugler, Andreas Huth, Werner Schreiber, Stefan Stock
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Patent number: 9373865Abstract: A method produces electrode windings, in which method a strip- or ribbon-like anode and a strip- or ribbon-like cathode are provided and flat collector lugs are formed on at least one longitudinal side of the anode and of the cathode at varying distances and/or contours are cut into the longitudinal sides of the electrodes. The anode and the cathode are wound up together with a strip- or ribbon-like separator to form a winding with the sequence anode/separator/cathode. The method is distinguished, in particular, in that the process of forming collector lugs and/or of cutting contours and the process of winding up overlap with respect to time.Type: GrantFiled: April 27, 2012Date of Patent: June 21, 2016Assignee: VW-VM Forschungsgesellschaft mbH & Co. KGInventors: Konrad Holl, Markus Pompetzki, Robert Sekler, Heiner Stelzig, Stefan Stock
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Publication number: 20160064723Abstract: A battery includes a housing, at least one individual cell arranged in the housing and including at least one positive electrode and at least one negative electrode, a positive pole stud passed through the housing and electrically connected to the at least one positive electrode and/or a negative pole stud passed through the housing and electrically connected to the at least one negative electrode, at least one electrical switch which can be pneumatically operated and changes its switching state in the event of an increase in pressure within the housing beyond a threshold value and thereby interrupts the electrical connection between at least one of the pole studs and an associated at least one electrode, and a resetting device with which an electrical connection which is interrupted as a result of a change in the switching state can be re-established without the housing having to be opened.Type: ApplicationFiled: April 24, 2014Publication date: March 3, 2016Inventors: Andreas Gaugler, Konrad Holl, Stefan Stock, Werner Schreiber
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Publication number: 20150207133Abstract: A battery includes a housing, at least one individual cell with at least one positive and at least one negative electrode arranged in the housing, a positive tap pole connected to the at least one positive electrode, and a negative tap pole connected to the at least one negative electrode. The battery also includes at least one thermal switch which, in the event of an increase in temperature within the housing beyond a temperature threshold value, changes its switching state as a result of a temperature-induced expansion and/or deformation and trips a safety mechanism which suppresses a further increase in temperature.Type: ApplicationFiled: July 25, 2013Publication date: July 23, 2015Inventors: Konrad Holl, Werner Schreiber, Markus Pompetzki, Stefan Stock, Steffen Legner, Andreas Gaugler
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Publication number: 20140053383Abstract: A method produces electrode windings, in which method a strip- or ribbon-like anode and a strip- or ribbon-like cathode are provided and flat collector lugs are formed on at least one longitudinal side of the anode and of the cathode at varying distances and/or contours are cut into the longitudinal sides of the electrodes. The anode and the cathode are wound up together with a strip- or ribbon-like separator to form a winding with the sequence anode/separator/cathode. The method is distinguished, in particular, in that the process of forming collector lugs and/or of cutting contours and the process of winding up overlap with respect to time.Type: ApplicationFiled: April 27, 2012Publication date: February 27, 2014Applicant: VOLKSWAGEN VARTA Microbattery Forschungsgesellschaft mbH & Co. KGInventors: Konrad Holl, Markus Pompetzki, Robert Sekler, Heiner Stelzig, Stefan Stock