Patents by Inventor Tim Schaefer

Tim Schaefer 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).

  • Publication number: 20130216873
    Abstract: An electrochemical cell has an energy unit (10) which has an electrode stack, at least one main lead (12, 14) which is connected to the electrode stack, and a casing (18) which at least partially surrounds the electrode stack; at least one frame element (16) which at least partially accommodates the energy unit (10); and at least one pressure-relief apparatus (32, 46). The casing (18) has a plurality of edge sections at the peripheral narrow sides of the electrochemical cell, wherein the at least one main lead (12, 14) extends at least partially out of the casing (18) in a first edge section and this first edge section of the casing (18) has a substantially fluid-tight first sealing seam (20, 22).
    Type: Application
    Filed: August 11, 2011
    Publication date: August 22, 2013
    Applicant: Li-Tec Battery GmbH
    Inventor: Tim Schaefer
  • Publication number: 20130209845
    Abstract: An electrochemical cell comprises an electrode stack (10), at least one current conductor (12, 14) connected to the electrode stack (10), and a casing (20, 22) which at least partially encloses the electrode stack (10). The at least current conductor (12, 14) extends at least partially out of the casing (20, 22), and the casing (20, 22) is provided with at least one pressure relief means (26, 28, 30). It is advantageous for protecting the electronics and the environment of the electrochemical cell that the at least one pressure relief means (26, 28, 30) is disposed preferably remotely from the at least one current conductor (12, 14) as possible and preferably in a lower area of the casing (20, 22) when the electrochemical cell is in the installed state.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 15, 2013
    Applicant: Li-Tec Battery GmbH
    Inventors: Tim Schaefer, Erhard Schletterer
  • Publication number: 20130209852
    Abstract: In an electrochemical energy store having a housing (I) and having at least one electrochemical cell (2) arranged in the housing (I), at least one wall of the housing (I) is coated or impinged on at least in regions with an extinguishing agent or an extinguishing agent additive (7-9).
    Type: Application
    Filed: August 17, 2011
    Publication date: August 15, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventors: Erhard Schletterer, Tim Schaefer, Claus-Rupert Hohenthanner, Joerg Kaiser
  • Publication number: 20130193927
    Abstract: Electrochemical energy storage device (1) with at least one electrode assembly, particularly a rechargeable electrode assembly (2), that is designed to at least temporarily supply electrical energy, which electrode assembly has at least two electrodes (3, 3a) of differing polarities, with a functional device (5) that is designed to be electrically connected to the at least two electrodes (3, 3a) of differing polarity, and which is designed to be switchable to a second state, wherein the electrodes (3, 3a) of differing polarity are electrically connected to each other when the functional device (5) is in the second state, with a cell housing (6) that is designed to at least partially surround the electrode assembly (2) and the functional device (5).
    Type: Application
    Filed: January 18, 2013
    Publication date: August 1, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventor: Tim Schaefer
  • Publication number: 20130171494
    Abstract: What is proposed is a contact element for connection between electrically conducting, preferably plate-shaped, components, in particular diverters of electrochemical cells, consisting of different materials, wherein the contact element is produced from at least two elements (32, 34), wherein at least two elements are joined by means of laser induction rollers, wherein a first element is adapted for connection to a first of the electrically conducting components, wherein a second element is adapted for connection to a second of the electrically conducting components, and wherein the first and the second element have an electrically conducting connection to one another. Therefore, a connection with high process reliability can be provided between diverters of electrochemical cells.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 4, 2013
    Applicant: Li-Tec Battery GmbH
    Inventors: Tim Schaefer, Steffen Legner
  • Publication number: 20130169236
    Abstract: A facility which operates according to galvanic principles, such as in particular a lithium-ion accumulator, and a method for monitoring and controlling an electric operating condition of the facility. The facility comprises at least one galvanic cell and an operating management system for monitoring and controlling the electric operating condition of the facility and for monitoring a representative temperature of the facility. The operating management system is designed to control the electric operating condition of the facility as a function of the temperature. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Application
    Filed: February 6, 2013
    Publication date: July 4, 2013
    Inventors: Tim SCHAEFER, Andreas Gutsch
  • Publication number: 20130149567
    Abstract: Lithium-ion battery comprising: (a) a positive electrode comprising an amorphous chalcogenide which comprises lithium ions or which can conduct lithium ions; (b) a negative electrode; (c) a separator between the positive electrode and the negative electrode, wherein the separator comprises a non-woven material composed of fibres, preferably polymer fibres; (d) a non-aqueous electrolyte.
    Type: Application
    Filed: May 17, 2011
    Publication date: June 13, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventor: Tim Schaefer
  • Publication number: 20130130078
    Abstract: A battery housing surrounds at least one but preferably a multiplicity of electrochemical energy storage devices. The battery housing has at least one but preferably a multiplicity of cell compartments to hold these electrochemical energy storage devices. The surface of the battery housing consists of four side surfaces, a bottom surface and a top surface, with the side surfaces being formed by the cell compartment elements. Two electrochemical energy storage devices are preferably arranged in one cell compartment. In particular, an elastic equalizing element is arranged between two electrochemical energy storage devices. The cell compartments are formed by cell compartment elements. In particular, a cell compartment element forms at least one cell compartment, and two cell compartment elements preferably form one cell compartment. The cell compartments can be closed, in particular, by a cover element.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 23, 2013
    Applicant: Li-Tec Battery GmbH
    Inventors: Tim Schaefer, Claus-Rupert Hohenthanner
  • Patent number: 8434940
    Abstract: The present invention relates to an apparatus, which works according to galvanic principles, in particular to a lithium-ion accumulator or, respectively, a lithium-ion cell, with at least two electrode devices (10; 20), in particular, a cathode and an anode, in particular, a separator device (30), arranged between two electrode devices, the apparatus (2) comprises, according to the invention, at least one or a plurality of glass fibers (18, 28, 38) which are configured or, respectively, operable as temperature sensor. It can comprise a net (16, 26, 36) formed by glass fibers, or an arrangement of a plurality of glass fibers, which are arranged substantially in parallel to each other, wherein at least one glass fiber (18, 28, 38) is configured or operable as temperature sensor.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: May 7, 2013
    Assignee: Li-Tec Battery GmbH
    Inventors: Walter Lachenmeier, Tim Schäfer, Andreas Gutsch
  • Publication number: 20130108899
    Abstract: The invention relates to a lithium-sulphur battery, comprising (a) a first electrode comprising lithium, (b) a second electrode comprising sulphur and/or a lithium sulphide, (c) a separator between the electrodes (a) and (b), (d) an electrolyte in the separator, characterised in that the separator comprises a non-woven fabric made of polymer fibres.
    Type: Application
    Filed: April 19, 2011
    Publication date: May 2, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventor: Tim Schaefer
  • Publication number: 20130108901
    Abstract: A battery housing comprises a cell compartment element (1) which at least partially delimits a cell compartment. Said cell compartment is designed to accommodate at least one electrochemical energy storage cell. A lid element (2) which is designed to be connected to the cell compartment element (1) obturates the cell compartment at least in sections thereof. The lid element (2) preferably comprises at least one fastening pin (29) and/or a bore (30) for a fastening pin for fastening the battery housing.
    Type: Application
    Filed: March 14, 2011
    Publication date: May 2, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventors: Tim Schaefer, Claus-Rupert Hohenthanner
  • Publication number: 20130099731
    Abstract: An arrangement (1) of electrical conductors (2, 2?, . . . ) for inducing an alternating current (3) which flows through this conductor arrangement (1), by means of a magnetic alternating field (4) which acts on this conductor arrangement, is used to charge a battery (5) of a vehicle (6) using the alternating current (3) which flows through the conductor arrangement (1). This conductor arrangement (1) is not connected to electrical conductors (8, 8?, . . .
    Type: Application
    Filed: March 24, 2011
    Publication date: April 25, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventor: Tim Schaefer
  • Publication number: 20130063096
    Abstract: A method for controlling the maximum charge rate during a charging process or discharging process of an electrochemical energy store device is generally characterised by current intensity. Said current intensity is dependent on the operating state of the electrochemical energy store device and on a group of boundary conditions. Said group typically comprises, for example, the temperature of at least one region of the electrochemical energy store device. The maximum charge rate may crucially depend on the mode of operation of the electrochemical energy store device, and therefore a distinction should be made in particular as to whether energy is being supplied to or withdrawn from said device. The electrochemical energy store device can heat up during charging or discharging processes, and therefore in particular the duration of the energy withdrawal and/or energy supply can influence the level of the current intensity which can be withdrawn and/or which can be supplied.
    Type: Application
    Filed: May 12, 2011
    Publication date: March 14, 2013
    Applicant: Li-Tec Battery GmbH
    Inventor: Tim Schaefer
  • Patent number: 8394527
    Abstract: The galvanic cell according to the invention comprises at least one current conductor and a casing. Said casing at least partially surrounds said galvanic cell. A contact area is assigned to said casing. The casing is at least partially materially engaged with the current conductor via the contact area. The casing comprises at least one first layer and one second layer. The materials of said first layer and said second layer of the casing are different in respect to at least one chemical material.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: March 12, 2013
    Assignee: Li-Tec Battery GmbH
    Inventors: Tim Schäfer, Andreas Gutsch
  • Patent number: 8395356
    Abstract: A facility which operates according to galvanic principles, such as in particular a lithium-ion accumulator, and a method for monitoring and controlling an electric operating condition of the facility. The facility comprises at least one galvanic cell and an operating management system for monitoring and controlling the electric operating condition of the facility and for monitoring a representative temperature of the facility. The operating management system is designed to control the electric operating condition of the facility as a function of the temperature. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 12, 2013
    Assignee: Li-Tec Battery GmbH
    Inventors: Tim Schaefer, Andreas Gutsch
  • Publication number: 20130059211
    Abstract: The present invention relates to a cathodic electrode for an electrochemical cell, comprising at least one carrier having at least one active material applied or deposited thereon, wherein the active material either comprises: (1) at least one lithium polyanion compound; or (2) a mixture made of a lithium/nickel/manganese/cobalt mixed oxide (NMC), which is not present in a Spinell structure, and a lithium manganese oxide (LMO) in a Spinell structure; or (3) a mixture of (1) and (2), wherein the carrier comprises a metallic material, in particular aluminum, and has a thickness of 15 ?m to 45 ?m, in particular an electrochemical cell having a high energy density. The present active material allows not only the energy density, but also the stability of the cell to be optimized. Furthermore, material costs and availability of materials are taken into consideration.
    Type: Application
    Filed: February 22, 2011
    Publication date: March 7, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventors: Tim Schaefer, Andreas Gutsch
  • Publication number: 20130052492
    Abstract: The present invention relates to an electrochemical cell for a lithium ion battery comprising at least (i) one electrolyte, (ii) at least one cathodic electrode, (iii) at least one anodic electrode and (iv) at least one separator disposed between cathodic electrode and anodic electrode, wherein said separator comprises at least one porous ceramic material. The electrochemical cell is enclosed in a gas-tight manner in a pressure-resistant housing, wherein said housing and said electrochemical cell do not comprise any means for reducing the pressure in the housing, especially no bursting device, pressure valve, one-way valve, central pin, mandrel or the like.
    Type: Application
    Filed: February 24, 2011
    Publication date: February 28, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventor: Tim Schaefer
  • Publication number: 20130052493
    Abstract: A heat dissipation device according to the invention has a first measuring device. This is provided for detecting a physical parameter. The heat dissipation device according to the invention has a heat-conducting device. Said heat-conducting device is provided for absorbing thermal energy from an adjacent electrochemical energy storage device. For this purpose, the heat-conducting device has a heat source contact region. The heat source contact region is provided for making thermally conductive contact with an adjacent electrochemical energy storage device. Furthermore, the heat-conducting device has a heat emission region, which adjoins the heat source contact region. The heat emission region is provided for emitting thermal energy to a process fluid.
    Type: Application
    Filed: March 28, 2011
    Publication date: February 28, 2013
    Applicant: LI-TEC BATTERY GMBH
    Inventors: Tim Schaefer, Claus-Rupert Hohenthanner
  • Publication number: 20130040068
    Abstract: A negative electrode for an electrochemical device comprises an active layer which forms a porous outer surface, the outer surface of the active layer being at least partially coated with nanoparticles, and/or an active layer which is at least partially covered by a porous functional layer at least an outer surface whereof is at least partially covered with nanoparticles. Also disclosed is a separator composite material for separating electrodes in an electrochemical device, comprising an essentially self-supporting support layer and a porous functional layer on at least one side of the support layer. An outer surface of the support layer is at least partially coated with nanoparticles on at least one side thereof. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Application
    Filed: September 28, 2012
    Publication date: February 14, 2013
    Inventors: Tim Schaefer, Andreas Gutsch
  • Publication number: 20130015818
    Abstract: The invention relates to a circuit assembly (10), comprising a series connection of first and second battery units (11, 12), wherein first and second battery units (11, 12) are arranged alternately, a first inductive storage element (13), wherein in a primary phase first inputs (17) of the first battery units (11) can be connected to a first terminal (19) of the first inductive storage element (13) by means of a first switch assembly (16) and second inputs of the second battery units (18) can be connected to a second terminal (20) of the first inductive storage element (13) by means of the first switch assembly (15), a second inductive storage element (14) which is inductively coupled to the first inductive storage element (13), wherein in a secondary phase by means of a second switch assembly (16) a first terminal of the second inductive storage element (14) can be connected to a first or a second input and a second terminal of the second inductive storage element (14) can be connected to a second or a first
    Type: Application
    Filed: January 19, 2011
    Publication date: January 17, 2013
    Applicant: Li-Tec Battery GmbH
    Inventor: Tim Schaefer