Patents by Inventor Winfried Gaugler

Winfried Gaugler 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).

  • Patent number: 12206063
    Abstract: A button cell includes a housing having a cell cup with a flat bottom area and having a cell top with a flat top area. The button cell also includes an electrode-separator assembly winding disposed within the housing. The electrode-separator assembly winding includes a multi-layer assembly that is wound in a spiral shape about an axis. The multi-layer assembly includes a positive electrode formed from a first current collector coated with a first electrode material, a negative electrode formed from a second current collector coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode. The button cell further includes a winding core around which the multi-layer assembly is wound. The winding core provides a contact pressure on a first metal foil output conductor in an axial direction to facilitate electrical contact between the first metal foil output conductor and the housing.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: January 21, 2025
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Publication number: 20240380034
    Abstract: An electrochemical energy storage cell in the form of a button cell includes a housing enclosing an interior space in an airtight and liquid-tight manner. The housing includes a metallic, cup-shaped housing part that comprises a housing cup base, a circumferential side wall, and a terminal opening. The housing further includes a lid that closes the terminal opening of the cup-shaped housing part. The electrochemical energy storage cell additionally includes an electrode-separator assembly in the form of a cylindrical winding. The electrode-separator assembly includes a ribbon-shaped anode comprising an anode current collector and a ribbon-shaped cathode comprising a cathode current collector. An inner side of the housing includes a region having a projection directed into the interior space. A first longitudinal edge of the anode current collector or of the cathode current collector is welded to the projection.
    Type: Application
    Filed: May 7, 2024
    Publication date: November 14, 2024
    Inventor: Winfried GAUGLER
  • Publication number: 20230420771
    Abstract: A button cell includes a metal cell cup, a cell top, a first electrode, and a second electrode. The first electrode includes a first current collector having an active material-free region, and the second electrode includes a second current collector. The button cell further includes a first metal foil conductor having a first portion attached to the active material-free region of the first current collector and an insulator applied to a rear side of the first metal foil conductor along a second portion of the first metal foil conductor. The first electrode and the second electrode form, along with a first separator layer and a second separator layer, an electrode assembly that is wound in a spiral to form an electrode winding. The second portion of the first metal foil conductor is welded to one of the metal cell cup or the cell top.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Inventor: Winfried Gaugler
  • 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: 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
  • Publication number: 20220209337
    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: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Inventor: Winfried Gaugler
  • Publication number: 20220209279
    Abstract: A button cell includes a housing having a cell cup with a flat bottom area and having a cell top with a flat top area. The button cell also includes an electrode-separator assembly winding disposed within the housing. The electrode-separator assembly winding includes a multi-layer assembly that is wound in a spiral shape about an axis. The multi-layer assembly includes a positive electrode formed from a first current collector coated with a first electrode material, a negative electrode formed from a second current collector coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode. The button cell further includes a winding core around which the multi-layer assembly is wound. The winding core provides a contact pressure on a first metal foil output conductor in an axial direction to facilitate electrical contact between the first metal foil output conductor and the housing.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, 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: 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: 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: 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
  • Patent number: 11233265
    Abstract: A button cell includes a housing having a cell cup, the cell cup having a flat bottom area, a cell cup casing, and a bottom edge forming a transition between the flat bottom area and the cell cup casing, and a cell top, the cell top having a flat top area and a cell top casing. An electrode-separator assembly winding is 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 including a separator disposed between a positive electrode and a negative electrode, and a first output conductor. An insulator is disposed between an end face of the electrode-separator assembly winding and the first output conductor, wherein the first output conductor is welded to the first of the flat bottom area or the flat top area.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: January 25, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11233264
    Abstract: A rechargeable button cell including a housing half-parts comprising a housing cup and a housing top separated from one another by an electrically insulating seal or film seal is disclosed. The button cell includes an electrode-separator assembly within the housing having a positive and a negative electrode in the form of flat layers connected to one another by a porous plastic film separator. The electrodes each include a metallic film or mesh embedded in a respective electrode material as a current collector, which acts as an output conductor that connects the electrodes to one of the flat bottom or flat top areas of the housing.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: January 25, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 11217844
    Abstract: A rechargeable lithium ion button cell includes a first metal conductor electrically connected to a positive electrode and a housing component, and a second metal conductor electrically connected to the positive electrode and another housing component, wherein the positive electrode and a negative electrode each include a strip-shaped current collector, at least one of the strip-shaped current collectors includes sections coated with an active electrode material and an uncoated section between two coated sections, and either the first or the second metal conductor is attached by welding to the uncoated section and one of planar bottom and planar top regions, thereby electrically connecting either the positive or negative electrode to the housing component.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 4, 2022
    Assignee: VARTA MICROBATTERY GMBH
    Inventor: Winfried Gaugler
  • Publication number: 20210399370
    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: Application
    Filed: September 3, 2021
    Publication date: December 23, 2021
    Inventor: Winfried Gaugler
  • Publication number: 20210399369
    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: Application
    Filed: September 2, 2021
    Publication date: December 23, 2021
    Inventor: Winfried Gaugler
  • Patent number: 11158896
    Abstract: A method for producing a button cell includes providing a first metal housing part having a first housing plane region, providing a second metal housing part having a second housing plane region, and providing a cylindrical electrode winding having a first end side, a second end side, and an outer side. The electrode winding is formed from a multi-layer assembly wound in a spiral shape about an axis. The multi-layer assembly includes a positive electrode formed from a first current collector coated with a first electrode material, a negative electrode formed from a second current collector coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode. The method further includes placing the electrode winding into the first metal housing part and forming a cell housing by assembling together the first metal housing part and the second metal housing part.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: October 26, 2021
    Assignee: VARTA MICROBATTERY GMBH
    Inventor: Winfried Gaugler
  • Patent number: 11114701
    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.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 7, 2021
    Assignee: VARTA Microbattery GmbH
    Inventors: Winfried Gaugler, Wolfgang Maas