Patents Assigned to Electro Energy, Inc.
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Patent number: 7244527Abstract: 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: GrantFiled: October 16, 2003Date of Patent: July 17, 2007Assignee: Electro Energy, Inc.Inventor: Martin G. Klein
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Patent number: 6887620Abstract: 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 cType: GrantFiled: January 6, 2003Date of Patent: May 3, 2005Assignee: Electro Energy, Inc.Inventors: Martin G. Klein, Paula Ralston, Robert Plivelich
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Patent number: 6503658Abstract: 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 electricallType: GrantFiled: July 11, 2001Date of Patent: January 7, 2003Assignee: Electro Energy, Inc.Inventors: Martin G. Klein, Paula Ralston, Robert Plivelich
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Patent number: 5698342Abstract: 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: GrantFiled: December 22, 1995Date of Patent: December 16, 1997Assignee: Electro Energy Inc.Inventor: Martin Klein
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Patent number: 5611823Abstract: 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: GrantFiled: December 22, 1995Date of Patent: March 18, 1997Assignee: Electro Energy, Inc.Inventor: Martin Klein
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Patent number: 5585142Abstract: 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: GrantFiled: October 7, 1994Date of Patent: December 17, 1996Assignee: Electro Energy, Inc.Inventor: Martin Klein
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Patent number: 5552243Abstract: 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: GrantFiled: February 23, 1995Date of Patent: September 3, 1996Assignee: Electro Energy, Inc.Inventor: Martin Klein
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Patent number: 5478363Abstract: 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: GrantFiled: October 7, 1994Date of Patent: December 26, 1995Assignee: Electro Energy, Inc.Inventor: Martin Klein
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Patent number: 5393617Abstract: 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: GrantFiled: October 8, 1993Date of Patent: February 28, 1995Assignee: Electro Energy, Inc.Inventor: Martin Klein