Patents Assigned to Varta Microbattery GmbH
  • Publication number: 20100239915
    Abstract: An electrode for a lithium ion battery includes a matrix based on at least one polysaccharide and also particles of at least one electrochemically active material which are embedded in the matrix, with the electrode being free of synthetic polymeric compounds. A battery contains the electrode and a polysaccharide is a binder for electrochemically active electrode materials for such an electrode.
    Type: Application
    Filed: July 11, 2008
    Publication date: September 23, 2010
    Applicant: VARTA MICROBATTERY GMBH
    Inventors: Nikolaus Stefan Hochgatterer, Stefan Koller, Mario Rene Schweiger, Martin Winter, Calin Wurm, Arno Perner, Thomas Wöhrle
  • Publication number: 20100081049
    Abstract: A battery having at least one positive and at least one negative electrode arranged alongside one another on a flat, electrically nonconductive substrate and connected to one another via an electrolyte which conducts ions.
    Type: Application
    Filed: April 6, 2006
    Publication date: April 1, 2010
    Applicants: VARTA MICROBATTERY GMBH, ACREO AB
    Inventors: Konrad Holl, Martin Krebs, Hartmut Weidenbacher, Bernd Kreidler, Hermann Löffelmann, Dejan Ilic, Magnus Berggren, Staffan Nordlinder, Linda Andersson, Lars-Olof Hennerdal, Anurak Sawatdee
  • Publication number: 20100060230
    Abstract: A mobile charger including a connector that facilitates charging at least one first battery from at least one second battery, wherein the second battery is a secondary battery and the second battery has a higher capacity than the first battery, thus allowing the first battery to be charged more than once; and a method for charging at least one first battery from at least one second battery, including connecting the second battery to the first battery with a secondary battery being used as the second battery to charge the at least one first battery, which secondary battery has a higher capacity than the first battery such that the first battery can be charged more than once.
    Type: Application
    Filed: August 2, 2006
    Publication date: March 11, 2010
    Applicant: VARTA MICROBATTERY GMBH, A CORPORATION OF GERMANY
    Inventors: Herbert Schein, Michael Kron, Dejan Ilic
  • Publication number: 20090315508
    Abstract: A charger that charges at least one first battery from at least one second battery, with the first battery to be charged and the second charging battery arranged in a charger, and with the capacity of the first battery to be charged being substantially less than that of the second charging battery and wherein the charger is in the form of a thin substantially cylindrical pen.
    Type: Application
    Filed: August 2, 2006
    Publication date: December 24, 2009
    Applicant: Varta Microbattery GmbH, A corporation of Germany, Am Leineufer 51
    Inventors: Herbert Schein, Bernd Behnle, Eduard Pytlik, Dejan Ilic
  • Publication number: 20090029203
    Abstract: A system for supplying a consuming appliance with electric energy, including at least one fuel supply unit in the form of a gas evolution cell which liberates a gaseous fuel on passage of an electric current and at least one fuel cell unit in which the gaseous fuel liberated can be reacted with an oxidant to generate electric power.
    Type: Application
    Filed: April 15, 2006
    Publication date: January 29, 2009
    Applicants: Varta Microbattery GmbH, Frauknhofer Gesellschaft zur Forderung der angewar idten Forschung e.V.
    Inventors: Stefan Wagner, Robert Hahn, Konrad Holl, Bernd Kreidler, Martin Krebs, Dejan Ilic
  • Patent number: 7276092
    Abstract: An electrochemical element in the form of a button cell having at least one lithium-intercalating electrode, wherein the cell cover or the cell cup has an opening which is closed in a sealed manner during the formation process. Once the formation process has been completed, it is opened briefly for gas to escape from the cell, and is then closed in a gastight manner. The cell cover and the cell cup are composed in particular of metal. The opening can be closed by a metal or metal/plastic composite sheet, which is adhesively bonded or welded to the cell cover or to the cell cup.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: October 2, 2007
    Assignee: Varta Microbattery GmbH
    Inventors: Konrad Holl, Alfons Joas, Horst Wagner, Kemal Akca, Arno Perner, Dejan Ilic
  • Publication number: 20070128510
    Abstract: A voltaic element including at least one lithium intercalating electrode and a housing including flexible film material through which diverters connected to positive and negative electrodes of the element are conducted exteriorly, wherein the diverter connected to the collector of the negative electrode and conducted to the exterior includes nickel-coated copper foil.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 7, 2007
    Applicant: Varta Microbattery GmbH
    Inventors: Rainer Hald, Johannes Maier, Peter Haug, Wolf-Ulrich Barenthin, Heinrich Stelzig, Peter Birke, Dejan Ilic
  • Patent number: 7141333
    Abstract: A method for producing an electrochemical element having at least one lithium-intercollating electrode and an organic electrolyte, at least one positive electrode, at least one negative electrode and at least one separator are joined together to form an element, with the separator being a porous matrix composed of at least about 60% by weight of a ceramic material A, which contains lithium ions, and a polymer as a binding agent. The resulting element is then introduced into a housing and impregnated with a liquid organic electrolyte B, whose conductive salt contains lithium ions, so that the ionic total conductivity of the separator is formed by adding the ion conductivities of A and B and the reciprocal of the specific contact resistance of the phase boundary between A and B, and is then closed such that it is sealed. A copolymer composed of vinylidene fluoride and hexafluoropropylene is used as the binder polymer. Material A is a naturally occurring mineral.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: November 28, 2006
    Assignee: Varta Microbattery GmbH
    Inventors: Peter Birke, Fatima Birke-Salam, Thomas Woehrle, Peter Haug, Konrad Holl, Heinrich Stelzig, Dejan Ilic
  • Patent number: 7129002
    Abstract: A method for producing a rechargeable button cell having a negative electrode composed of a lithium/indium alloy, a positive lithium/intercalating electrode and an organic electrolyte, a lithium layer and an indium layer are introduced into a negative housing half-section. The positive electrode material is introduced into a positive housing half-section. The two housing half-sections are beaded to form the button cell once the organic electrolyte has been added and a separator has been placed in between, with a seal being inserted between the housing half-sections. A lithium-indium alloy is formed from the lithium layer and the indium layer by storage or a subsequent charging/discharge cycle.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: October 31, 2006
    Assignee: Varta Microbattery GmbH
    Inventors: Konrad Holl, Arno Perner, Horst Wagner, Rolf Hennrich, Dejan Ilic
  • Patent number: 7122275
    Abstract: An electrochemical element which contains a stack including two or more individual cells with positive and negative electrodes as well as separators in a housing formed from a metal sheet which is coated on the inside with insulating material. The output conductor lugs of each polarity are welded to a collector. The collector forms an external electrical connection of the electrochemical element. Those areas of the output conductor lugs and the collector which are welded to them, point towards the housing internal wall and are adjacent to the housing wall and are covered with a plastic film. The plastic film is adhesively bonded to the output conductor and to the collector with a silicone adhesive layer and is composed, for example, of polyimide.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: October 17, 2006
    Assignee: Varta Microbattery GmbH
    Inventors: Thomas Woehrle, Winfried Gaugler, Wolf-Ulrich Barenthin, Heinrich Stelzig, Dejan Ilic
  • Patent number: 7073723
    Abstract: A thin electronic chip card with an IC chip and a galvanic element as an energy store, which has at least one lithium-intercalating electrode and has a thin, flexible housing comprising two metal foils, which bear directly against the electrodes and are connected to each other in a sealed manner with an adhesive or sealing layer, the element is arranged in a recess in the chip card and the chip card and the element are covered on both sides by an overlay plastic film, which is firmly bonded to the chip card and the element with an elastic stress-compensating adhesive, which adheres simultaneously on metals and plastics.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: July 11, 2006
    Assignee: Varta Microbattery GmbH
    Inventors: Stefan Fürst, Michael Moser, Heinrich Stelzig, Claudia Rathmann, Fatima Birke-Salam, Dejan Ilic, Ulrich Bosch, Thomas Woehrle
  • Patent number: 6995568
    Abstract: A method for fault tracing in automatically operating electronic measurement and test arrangements for a large number of electrochemical elements, wherein holders for the electrochemical elements are provided on the measurement and test arrangements and wherein cell simulators are provided with an external shape and size, including electrical connections, which approximately simulate one of the electrochemical elements to be tested, and contain test electronics, with a behaviour of the cell simulators with inverse polarity differing to a major extent from a behaviour with polarity based on the application, including the steps of inserting of the cell simulators into the holders, activating one of the cell simulators and applying a measurement current applied to it, measuring the voltage on the cell simulator and comparing the voltage with the nominal voltage predetermined for the cell simulator.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: February 7, 2006
    Assignee: Varta Microbattery GmbH
    Inventors: Rainer Hald, Peter Haug, Dejan Ilic, Willi Wallkum, Peter Birke
  • Patent number: 6953117
    Abstract: A sales packaging for electric storage batteries having a backing and a cover fastened thereto. The storage battery has a connecting cable and a connector. The cover encloses the storage battery. The connecting cable and connector are brought out of the sales packaging and are accessible without damaging the cover. The connector is arranged in an opening in the backing, removable therefrom, and the opening is surrounded by slits.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: October 11, 2005
    Assignee: Varta Microbattery GmbH
    Inventors: Herbert Schein, Torsten Schmerer, Asela Jayampathy, Helmut Hewelt, Heinrich Stelzig, Kuno Gross
  • Patent number: 6889840
    Abstract: A packaging for galvanic cells including a carrier; a rotatable insert arranged on the carrier, wherein the rotatable insert has blisters to accommodate a plurality of the galvanic cells and the carrier has an opening to withdraw one of the cells from the insert; and a cover, arranged such that the insert is arranged between the carrier and the cover, the carrier and the cover being sealed together such that the insert is free to rotate, wherein the cover has an opening to accommodate the insert, and the carrier has a securable tab that allows withdrawal of one of the cells from the insert.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: May 10, 2005
    Assignee: Varta Microbattery GmbH
    Inventors: Herbert Schein, Anja Krüger, Helmut Hewelt, Manfred Hägele, Manfred Bradler, Heinrich Stelzig
  • Publication number: 20040182939
    Abstract: A thin electronic chip card with an IC chip and a galvanic element as an energy store, which has at least one lithium-intercalating electrode and has a thin, flexible housing comprising two metal foils, which bear directly against the electrodes and are connected to each other in a sealed manner with an adhesive or sealing layer, the element is arranged in a recess in the chip card and the chip card and the element are covered on both sides by an overlay plastic film, which is firmly bonded to the chip card and the element with an elastic stress-compensating adhesive, which adheres simultaneously on metals and plastics.
    Type: Application
    Filed: January 28, 2004
    Publication date: September 23, 2004
    Applicant: VARTA Microbattery GmbH, a corporation of Germany
    Inventors: Stefan Furst, Michael Moser, Heinrich Stelzig, Claudia Rathmann, Fatima Birke-Salam, Dejan Ilic, Ulrich Bosch, Thomas Woehrle
  • Publication number: 20040183541
    Abstract: In a method for fault tracing in automatically operating electronic measurement and test arrangements for a large number of electrochemical elements, cell simulators are inserted into the holders which are provided for the electrochemical elements. The external shape and size, including the electrical connections, of these cell simulators simulate an electrochemical element. They contain test electronics, whose behaviour with inverse polarity differs to a major extent from the behaviour with polarity based on the application. One cell simulator is activated and has a measurement current applied to it. The voltage and/or the voltage response on the cell simulator are/is then measured and are/is compared with the nominal voltage value predetermined for this cell simulator. The test electronics comprise at least a resistor and a diode connected in parallel.
    Type: Application
    Filed: November 10, 2003
    Publication date: September 23, 2004
    Applicant: VARTA Microbattery GmbH, a corporation of Germany
    Inventors: Rainer Hald, Peter Haug, Dejan Ilic, Willi Wallkum, Peter Birke
  • Publication number: 20040185338
    Abstract: An electrochemical element in the form of a button cell having at least one lithium-intercalating electrode, wherein the cell cover or the cell cup has an opening which is closed in a sealed manner during the formation process. Once the formation process has been completed, it is opened briefly for gas to escape from the cell, and is then closed in a gastight manner. The cell cover and the cell cup are composed in particular of metal. The opening can be closed by a metal or metal/plastic composite sheet, which is adhesively bonded or welded to the cell cover or to the cell cup.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 23, 2004
    Applicant: VARTA Microbattery GmbH, a corporation of Germany
    Inventors: Konrad Holl, Alfons Joas, Horst Wagner, Kemal Akca, Arno Perner, Dejan Ilic
  • Patent number: 6780545
    Abstract: A method for manufacturing galvanic elements having a liquid organic electrolyte that contain an electrode-separator assembly that has at least one lithium intercalating electrode in whose polymer matrix insoluble, electrochemically active materials are finely distributed in the polymer involved, the electrolyte contains about 2% to about 15% by weight of a hydrocarbon-oxygen compound (carbonate) that has a central carbon atom, to which one oxygen atom is doubly bonded and two oxygen are singly bonded, where the singly bonded oxygen is not saturated by any other atoms or groups and a hydrocarbon chain having a length of four carbon atoms or less is bonded to each of those singly bonded oxygen atoms and these two chains differ by at least one, but no more than three, CH2 groups, and this electrode-separator assembly is initially impregnated with this electrolyte, then cut to size, and subsequently inserted into a housing.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: August 24, 2004
    Assignee: Varta Microbattery GmbH
    Inventors: Fatima Birke-Salam, Peter Birke, Konrad Holl, Heinrich Stelzig, Dejan Illic
  • Publication number: 20040134259
    Abstract: In a method for leak testing of electrochemical elements which have a thin flexible housing that is composed of a metal sheet or a metal/plastic composite sheet, after assembly and if necessary after formation in a closed container, the electrochemical element is subjected to an increased pressure and then to a reduced pressure, and any change in thickness that occurs is measured. Alternatively, after assembly, formation and storage in a closed container, the electrochemical element is subjected to a reduced pressure, and any change in thickness that occurs is measured.
    Type: Application
    Filed: December 5, 2003
    Publication date: July 15, 2004
    Applicant: VARTA Microbattery GmbH, a corporation of Germany
    Inventors: Peter Haug, Peter Birke, Rainer Hald, Konrad Holl, Dejan Ilic
  • Patent number: D572656
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: July 8, 2008
    Assignee: Varta Microbattery GmbH
    Inventor: Herbert Schein