Patents Assigned to Microbatterie GmbH
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Publication number: 20120164502Abstract: A galvanic element has a positive electrode, a negative electrode and a separator lying in between, wherein the separator consists at least partially of a polymer of which the melting and/or softening temperature is >200° C. A multi-layer separator for galvanic elements, in particular for lithium-ion batteries, includes at least one layer of the polymer with a melting and/or softening temperature >200° C.Type: ApplicationFiled: July 26, 2010Publication date: June 28, 2012Applicants: VOLKSWAGEN VARTA Microbattery Forschungsgesellschaft mbH & Co. KG, VARTA Microbattery GmbHInventors: Konrad Holl, Markus Pompetzki, Markus Kohlberger, Alfons Joas, Kemal Akca, Horst Wagner, Peter Haug, Arno Perner
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Patent number: 8120309Abstract: 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: GrantFiled: August 2, 2006Date of Patent: February 21, 2012Assignee: Varta Microbattery GmbHInventors: Herbert Schein, Bernd Behnle, Eduard Pytlik, Dejan Ilic
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Publication number: 20120028110Abstract: A method for producing a button cell with a housing includes a cell cup with a base region, a lateral region, an edge region lying therebetween and a cut edge, and a cell cover with a cover region, a lateral region, an edge region lying therebetween and a cut edge, connected to one another via a seal. The method includes at least applying the seal to the lateral region, inserting the cell cover with the seal into the cell cup, wherein a region is formed in which the lateral regions and overlap one another, and exerting a pressure on the lateral region of the cell cup. The heights of the lateral regions and are matched to one another such that the cut edge is pressed against the lateral region by pressure. The cell cup of button cells have an inner radius which is essentially constant in the region in the direction of the cut edge.Type: ApplicationFiled: March 16, 2010Publication date: February 2, 2012Applicant: VARTA Microbattery GmbHInventor: Rolf Brenner
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Publication number: 20110269012Abstract: An electrochemical element includes at least one individual cell having electrodes arranged on a sheet-like separator, wherein the electrodes have been applied to the separator by at least one adhesive.Type: ApplicationFiled: December 7, 2007Publication date: November 3, 2011Applicant: Varta Microbattery GmbH, a Corporation of GermanyInventors: Arno Perner, Thomas Woehrle, Markus Kohlberger, Rainer Hald, Markus Pompetzki, Peter Haug, Calin Wurm, Dejan Ilic
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Publication number: 20110268997Abstract: A battery comprising a cell stack comprising at least one individual cell in a cell housing, an electronic component part, electrical conductors between the cell stack and the electronic component part and an injection-molded part which substantially completely surrounds the electrical conductors and is connected in form-fitting fashion both the cell stack and to the electronic component part and connects the cell stack and the electronic component part to one another, outer contact faces of the battery also being integrated in the electronic component part in addition to at least one electronic circuit.Type: ApplicationFiled: January 22, 2010Publication date: November 3, 2011Applicant: VARTA Microbattery GmbHInventors: Christian Gaugler, Kuno Gross, Rainer Hahn
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Publication number: 20110183182Abstract: A galvanic element includes at least one single cell having electrodes arranged on a substantially flat separator, at least one of which has a current collector provided with an output lug overlapping an edge area of the separator, with at least one thin layer being arranged in this edge area such that direct mechanical contact is prevented between the output lug and the separator.Type: ApplicationFiled: November 6, 2007Publication date: July 28, 2011Applicant: VARTA Microbattery GmbH, A Corporation of GermanyInventors: Thomas Woehrle, Rainer Hald, Markus Pompetzki, Markus Kohlberger, Johannes Maier, Calin Wurm, Arno Perner, Peter Haug, Dejan Ilic
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Publication number: 20110086253Abstract: A rechargeable electrochemical cell includes at least one lithium-intercalating electrode; a thin flexible housing, which is closed in a sealed manner, including two films connected to one another by an adhesive or sealing layer; and at least one current output conductor in which an irreversibly tripping thermal fuse is integrated, and the fuse is arranged within the housing and/or embedded in the adhesive or sealing layer.Type: ApplicationFiled: April 15, 2009Publication date: April 14, 2011Applicants: Varta Microbattery GmbH, Volkswagen Varta Microbattery Forschungsgessellschaft mbH & Co. KGInventors: Markus Pompetzki, Markus Kohlberger, Rainer Hald, Peter Haug, Thomas Wöhrle, Arno Perner, Calin Wurm
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Publication number: 20090315508Abstract: 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: ApplicationFiled: August 2, 2006Publication date: December 24, 2009Applicant: Varta Microbattery GmbH, A corporation of Germany, Am Leineufer 51Inventors: Herbert Schein, Bernd Behnle, Eduard Pytlik, Dejan Ilic
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Publication number: 20090029203Abstract: 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: ApplicationFiled: April 15, 2006Publication date: January 29, 2009Applicants: 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
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Patent number: 7276092Abstract: 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: GrantFiled: March 15, 2004Date of Patent: October 2, 2007Assignee: Varta Microbattery GmbHInventors: Konrad Holl, Alfons Joas, Horst Wagner, Kemal Akca, Arno Perner, Dejan Ilic
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Publication number: 20070128510Abstract: 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: ApplicationFiled: December 16, 2004Publication date: June 7, 2007Applicant: Varta Microbattery GmbHInventors: Rainer Hald, Johannes Maier, Peter Haug, Wolf-Ulrich Barenthin, Heinrich Stelzig, Peter Birke, Dejan Ilic
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Patent number: 7157184Abstract: A method for producing electrode sheets for electrochemical elements which contain at least one lithium-intercalating electrode which is composed of a mixture of at least two copolymerized fluorized polymers in whose polymer matrix electrochemically active materials which are insoluble in the polymer are finely dispersed, the fluorized polymers are, having being dissolved as a solvent, mixed with electrochemically active materials, the resulting pasty substance is extruded to form a sheet and then laminated with a polyolefin separator, which is provided with a mixture of the two polymers, PVDF-HFP copolymers in each case being used as the polymer, and the proportion of HFP being less than about 8 percent by weight.Type: GrantFiled: May 22, 2002Date of Patent: January 2, 2007Assignee: Microbatterie GmbHInventors: Thomas Wöhrle, Peter Birke, Heinrich Stelzig, Konrad Holl, Dejan llic
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Patent number: 7141333Abstract: 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: GrantFiled: April 29, 2003Date of Patent: November 28, 2006Assignee: Varta Microbattery GmbHInventors: Peter Birke, Fatima Birke-Salam, Thomas Woehrle, Peter Haug, Konrad Holl, Heinrich Stelzig, Dejan Ilic
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Patent number: 7129002Abstract: 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: GrantFiled: April 28, 2003Date of Patent: October 31, 2006Assignee: Varta Microbattery GmbHInventors: Konrad Holl, Arno Perner, Horst Wagner, Rolf Hennrich, Dejan Ilic
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Patent number: 7122275Abstract: 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: GrantFiled: June 4, 2003Date of Patent: October 17, 2006Assignee: Varta Microbattery GmbHInventors: Thomas Woehrle, Winfried Gaugler, Wolf-Ulrich Barenthin, Heinrich Stelzig, Dejan Ilic
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Patent number: 7073723Abstract: 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: GrantFiled: January 28, 2004Date of Patent: July 11, 2006Assignee: Varta Microbattery GmbHInventors: Stefan Fürst, Michael Moser, Heinrich Stelzig, Claudia Rathmann, Fatima Birke-Salam, Dejan Ilic, Ulrich Bosch, Thomas Woehrle
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Patent number: 6995568Abstract: 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: GrantFiled: November 10, 2003Date of Patent: February 7, 2006Assignee: Varta Microbattery GmbHInventors: Rainer Hald, Peter Haug, Dejan Ilic, Willi Wallkum, Peter Birke
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Patent number: 6953117Abstract: 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: GrantFiled: March 13, 2003Date of Patent: October 11, 2005Assignee: Varta Microbattery GmbHInventors: Herbert Schein, Torsten Schmerer, Asela Jayampathy, Helmut Hewelt, Heinrich Stelzig, Kuno Gross
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Patent number: 6889840Abstract: 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: GrantFiled: December 17, 2002Date of Patent: May 10, 2005Assignee: Varta Microbattery GmbHInventors: Herbert Schein, Anja Krüger, Helmut Hewelt, Manfred Hägele, Manfred Bradler, Heinrich Stelzig
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Patent number: D572656Type: GrantFiled: July 18, 2007Date of Patent: July 8, 2008Assignee: Varta Microbattery GmbHInventor: Herbert Schein