Patents Assigned to Electro Energy, Inc.
  • Patent number: 7244527
    Abstract: Embodiments of the present invention provide a method and system for controlling a multi-cell battery. In one embodiment of the present invention, a stack of bipolar wafer cells may be connected in series. Each cell may have an area that may be expandable in response to pressure. Such an area may be aligned with a corresponding area of at least one adjacent cell. The invention further includes a trigger mechanism that may be responsive to a force created by pressure generated in a cell in the stack of bipolar cells.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: July 17, 2007
    Assignee: Electro Energy, Inc.
    Inventor: Martin G. Klein
  • Patent number: 6887620
    Abstract: The bipolar electrochemical battery of the invention comprises: a stack of at least two electrochemical cells electrically arranged in series with the positive face of each cell contacting the negative face of an adjacent cell, wherein each of the cells comprises (a) a negative electrode; (b) a positive electrode; (c) a separator between the electrodes, wherein the separator includes an electrolyte; (d) a first electrically conductive lamination comprising a first inner metal layer and a first polymeric outer layer, said first polymeric outer layer having at least one perforation therein to expose the first inner metal layer, said first electrically conductive lamination being in electrical contact with the outer face of the negative electrode; and (e) a second electrically conductive lamination comprising a second inner metal layer and a second polymeric outer layer, said second polymeric outer layer having at least one perforation therein to expose the second inner metal layer, said second electrically c
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: May 3, 2005
    Assignee: Electro Energy, Inc.
    Inventors: Martin G. Klein, Paula Ralston, Robert Plivelich
  • Patent number: 6503658
    Abstract: The bipolar electrochemical battery of the invention comprises: a stack of at least two electrochemical cells electrically arranged in series with the positive face of each cell contacting the negative face of an adjacent cell, wherein each of the cells comprises (a) a negative electrode; (b) a positive electrode; (c) a separator between the electrodes, wherein the separator includes an electrolyte; (d) a first electrically conductive lamination comprising a first inner metal layer and a first polymeric outer layer, said first polymeric outer layer having at least one perforation therein to expose the first inner metal layer, said first electrically conductive lamination being in electrical contact with the outer face of the negative electrode; and (e) a second electrically conductive lamination comprising a second inner metal layer and a second polymeric outer layer, said second polymeric outer layer having at least one perforation therein to expose the second inner metal layer, said second electricall
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: January 7, 2003
    Assignee: Electro Energy, Inc.
    Inventors: Martin G. Klein, Paula Ralston, Robert Plivelich
  • Patent number: 5698342
    Abstract: The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. This invention is further directed to fabrication of electrodes from electrochemically active material prepared by coating non- to low-conductive particles of a metal hydroxide or metal oxide powder with nickel using a electroless nickel coating process. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: December 16, 1997
    Assignee: Electro Energy Inc.
    Inventor: Martin Klein
  • Patent number: 5611823
    Abstract: This invention is directed to fabrication of electrodes from electrochemically active material prepared by coating non- to low-conductive particles of a metal hydroxide or metal oxide powder with nickel using a electroless nickel coating process. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: March 18, 1997
    Assignee: Electro Energy, Inc.
    Inventor: Martin Klein
  • Patent number: 5585142
    Abstract: This invention is directed to fabrication of electrochemically active material prepared by coating non- to low-conductive particles of a metal hydroxide or metal oxide powder with a metal using a electroless coating process. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: December 17, 1996
    Assignee: Electro Energy, Inc.
    Inventor: Martin Klein
  • Patent number: 5552243
    Abstract: The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: September 3, 1996
    Assignee: Electro Energy, Inc.
    Inventor: Martin Klein
  • Patent number: 5478363
    Abstract: The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: December 26, 1995
    Assignee: Electro Energy, Inc.
    Inventor: Martin Klein
  • Patent number: 5393617
    Abstract: The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: February 28, 1995
    Assignee: Electro Energy, Inc.
    Inventor: Martin Klein