Patents Assigned to Varta Microbattery GmbH
  • Publication number: 20240297311
    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.
    Type: Application
    Filed: February 28, 2024
    Publication date: September 5, 2024
    Applicant: VARTA Microbattery GmbH
    Inventor: Sebastian Schebesta
  • Publication number: 20240291031
    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.
    Type: Application
    Filed: June 3, 2022
    Publication date: August 29, 2024
    Applicants: VARTA Microbattery GmbH, Fundación CIDETEC
    Inventors: Idoia Urdampilleta González, Martin Krebs, Iñaki Gómez Agúndez, Luis Cesar Colmenares Rausseo, Jose Alberto Blázquez Martin
  • Publication number: 20240266793
    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.
    Type: Application
    Filed: February 5, 2024
    Publication date: August 8, 2024
    Applicant: VARTA Microbattery GmbH
    Inventor: Dieter Kloos
  • Patent number: 11929465
    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
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: March 12, 2024
    Assignee: VARTA Microbattery GmbH
    Inventor: Nils Barenthin
  • Patent number: 11901520
    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.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: February 13, 2024
    Assignee: VARTA Microbattery GmbH
    Inventors: Jakob Ulke, Alexander Börger, Simon Calles, Torsten Knape
  • Patent number: 11843133
    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.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: December 12, 2023
    Assignee: VARTA Microbattery GmbH
    Inventors: Marc Oliver Nestle, Sunil Siddannavar
  • Patent number: 11820572
    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.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: November 21, 2023
    Assignees: VARTA Microbattery GmbH, VARTA Consumer Batteries GmbH & Co. KGaA
    Inventors: Georg Felber, Werner Regner
  • Patent number: 11794944
    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.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: October 24, 2023
    Assignees: VARTA Microbattery GmbH, VARTA Consumer Batteries GmbH & Co. KGaA
    Inventors: Otto Hessel, Dietmar Köhnlein, Werner Regner
  • Patent number: 11791493
    Abstract: A method for producing a button cell includes providing a cell cup, a cell top and an electrode-separator assembly winding, the electrode-separator assembly winding having a positive electrode and a negative electrode. An electrically insulating seal is applied at least to an outer portion of the cell top casing. The electrode-separator assembly winding is inserted into the cell top. The cell top is inserted into the cell cup to form a housing. A pressure is applied in a radial direction perpendicular to an axis of the electrode-separator assembly winding so as to seal the housing.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: October 17, 2023
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11791512
    Abstract: A method for producing a button cell includes providing a metal cell cup, providing a metal cell top, and providing a first electrode and a second electrode. The first electrode includes a first current collector partially coated with a first active electrode material and having an active material-free region. The second electrode includes a second current collector partially coated with a second active electrode material and having an active material-free region. The method further includes attaching a first metal foil conductor to the active material-free region of the first current collector, attaching a second metal foil conductor to the active material-free region of the second current collector, and forming a cylindrical electrode winding by winding, in a spiral, an electrode assembly. The first and second metal foil conductors extend out of the cylindrical electrode winding from first and second end faces of the cylindrical electrode winding.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: October 17, 2023
    Assignee: VARTA MICROBATTERY GMBH
    Inventor: Winfried Gaugler
  • Patent number: 11735760
    Abstract: A method for producing a button cell includes providing a cell cup, a cell top and an electrode-separator assembly winding, the electrode-separator assembly winding having a positive electrode and a negative electrode. An electrically insulating seal is applied at least to an outer portion of the cell top casing. The electrode-separator assembly winding is inserted into the cell top. The cell top is inserted into the cell cup to form a housing. A pressure is applied in a radial direction perpendicular to an axis of the electrode-separator assembly winding so as to seal the housing.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: August 22, 2023
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11664554
    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.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: May 30, 2023
    Assignees: VARTA Microbattery GmbH, VW Kraftwerk GmbH
    Inventors: Andreas Gaugler, Andreas Huth, Werner Schreiber, Stefan Stock
  • Patent number: 11581565
    Abstract: A method for producing a button cell includes providing a cell cup, a cell top and an electrode-separator assembly winding, the electrode-separator assembly winding having a positive electrode and a negative electrode. An electrically insulating seal is applied at least to an outer portion of the cell top casing. The electrode-separator assembly winding is inserted into the cell top. The cell top is inserted into the cell cup to form a housing. A pressure is applied in a radial direction perpendicular to an axis of the electrode-separator assembly winding so as to seal the housing.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: February 14, 2023
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11362384
    Abstract: A button cell includes a button cell housing with a metal cell cup and a metal cell top. The metal cell cup has a cell cup plane region connected to a cell cup lateral surface region, and the metal cell top has a cell top plane region connected to a cell top lateral surface region. The cell cup plane region extends substantially parallel to the cell top plane region, the cell cup lateral surface region extends substantially parallel to and at least partially overlaps the cell top lateral surface region in an overlap area, an electrically insulating seal is disposed in the overlap area, and the cell cup lateral surface region and the cell top lateral surface region provide a force-fit connection therebetween to form a leaktight closure of the button cell housing. The button cell further includes an electrode winding disposed within the housing.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: June 14, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventor: Winfried Gaugler
  • Patent number: 11362385
    Abstract: A button cell configured as a secondary lithium ion battery includes a button cell housing and an electrode separator assembly disposed inside the button cell housing. The button cell housing includes a metal cell cup, the metal cell cup having a cell cup plane region connected to a cell cup lateral surface region, a metal cell top, the metal cell top having a cell top plane region connected to a cell top lateral surface region, and an electrically insulating seal disposed between the cell cup lateral surface region and the cell top lateral surface region. The electrode separator assembly includes a positive electrode formed from a first portion of a first current collector, a negative electrode formed from a first portion of a second current collector, and a separator disposed between the positive electrode and the negative electrode.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: June 14, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventor: Winfried Gaugler
  • Patent number: 11322809
    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.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: May 3, 2022
    Assignees: VARTA Microbattery GmbH, VW Kraftwerk GmbH
    Inventor: Konrad Holl
  • Patent number: 11316188
    Abstract: A method for producing a battery includes providing a cup-shaped first housing part having a bottom and a side wall, the bottom and the side wall each having an inside and an outside. The method further includes covering the inside of the bottom of the first housing part with an electrically conductive covering, electrically connecting the electrically conductive covering to the bottom of the first housing part by welding, electrically connecting an electric conductor to the electrically conductive covering by welding, and assembling the first housing part and a second housing part to form a housing of the battery, the housing enclosing an interior space that includes a composite body therein. The composite body includes a positive electrode, a negative electrode, a separator, and the electric conductor. The inside of the bottom and the inside of the side wall of the first housing part face the interior space.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: April 26, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Goran Kilibarda, Bernd Kreidler, Joachim Rieger
  • Patent number: 11276875
    Abstract: A method for producing a button cell includes providing a cell cup, the cell cup having a flat bottom area and a cell cup casing; providing a cell top, the cell top having a flat top area and a cell top casing having a first height; and providing an electrode-separator assembly winding. The cell top casing and the cell cup casing form an overlap area extending in a direction parallel to the axis of the winding and having a second height, the second height being between 20% and 99% of the first height. The method includes applying, in a radial direction perpendicular to the axis of the winding, a pressure on the cell cup casing so as to seal the housing, wherein a portion of the cell top casing that is cylindrical forms at least a part of the overlap area.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: March 15, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11258145
    Abstract: A method for producing a battery includes depositing, via sputter deposition, a coating on at least a portion of a cup shaped first housing part of the battery. The coating includes aluminium, chromium, tin, and/or an alloy having two or more of the group consisting of aluminium, chromium, and tin. The method also includes establishing an electrical connection between a current conductor of the battery and the cup-shaped first housing part of the battery and assembling the cup-shaped first housing part of the battery and a second housing part of the battery to form a housing of the battery. The housing has an interior space that includes a composite body including a positive electrode, a negative electrode, a separator, and the current conductor. The cup-shaped first housing part has a circular or oval bottom and a ring-shaped side wall.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: February 22, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Goran Kilibarda, Bernd Kreidler, Joachim Rieger
  • Patent number: 11258092
    Abstract: A button cell includes a housing, the housing having a cell cup with a flat bottom area, and a cell top with a flat top area, and further includes an electrode-separator assembly winding disposed within the housing, the electrode-separator assembly winding including a multi-layer assembly that is wound in a spiral shape about an axis. The multi-layer assembly includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The button cell additionally includes a first output conductor between a first end face of the electrode-separator assembly winding and a first of the flat bottom area or the flat top area, and a second output conductor between a second end face of the electrode-separator assembly winding and a second of the flat bottom area or the flat top area. Furthermore, the button cell includes a first insulator and a second insulator.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: February 22, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler