Having Centrally Located Anode, I.e., "inside-out" Type Cell Patents (Class 429/165)
  • Patent number: 10228009
    Abstract: Fasteners and fastener systems that can act as air vents for enclosures are described. The fasteners can be configured to secure a component to a wall of an enclosure, while at the same time providing a passageway for air to pass between an internal cavity of the enclosure and an outer environment. The venting feature of the fastener can serve to equalize pressures between the internal cavity and outer environment so as to prevent pressure build up or condensation within the internal cavity. The dual functionality of the fasteners is suitable for use in portable electronic devices where compactness and space saving measures can be of importance.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: March 12, 2019
    Assignee: Apple Inc.
    Inventors: David M Pelletier, William C. Lukens, Eugene Fox
  • Patent number: 9871237
    Abstract: A battery-accommodating waterproof container includes a housing, a transmission base, a battery-holding seat and a locking cover module. The housing has a first opening, a second opening and a plurality of wedging holes. The transmission base is fixed on the first opening, and has a bottom board, an electricity transferring seat and a bottom-sealing element disposed between the bottom board and the housing. The battery-holding seat is received in the housing for receiving a battery therein. The electricity transferring seat transfers electricity of the battery outside the transmission base. The locking cover module is disposed on the second opening of the housing, and has a covering lid, a plurality of locking tabs and a pushing unit. The pushing unit drives the locking tabs to respectively wedge in the wedging holes of the housing, so as to retain the battery-holding seat in the housing.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 16, 2018
    Assignee: LITE-ON TECHNOLOGY CORPORATION
    Inventors: Shan-Yu Lu, Ke-Cheng Wang
  • Patent number: 9525194
    Abstract: A method of reversibly connecting two substrates includes positioning an electrically conductive adhesive connector including a shape memory polymer (SMP) between the substrates, heating the connector to a temperature higher than the SMP transition temperature, applying a load and cooling the connector below the transition temperature to transform the connector to a conforming shape to form an adhesive bond attaching the substrates and providing an electrical connection therebetween. The method may include disconnecting the connector from the substrates by heating the connector above the SMP transition temperature, which may disrupt the electrical connection between the substrates. The connector may be a battery tab connector configured to connect a battery cell to another battery cell or a terminal. The connector may be releasable from the battery tab such that the battery tab is reusable after removal of the connector. The connector may be multi-layer and generally arcuate in a permanent shape.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: December 20, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: John C. Ulicny, Blair E. Carlson, Tao Xie
  • Patent number: 9379387
    Abstract: Disclosed is a current collector prepared by coating a primer on a metallic base and a magnesium secondary battery including the same. The primer includes a conductive material and a polymer material and enhances adhesive strength between a cathode current collector and an active material, thereby maintaining stability in an operating voltage range of the battery without increasing internal resistance.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 28, 2016
    Assignee: LG CHEM, LTD.
    Inventors: YoungHwa Jung, Young Sun Choi, Yong Tae Lee, Seung-tae Hong
  • Publication number: 20140234697
    Abstract: An electrochemical cell of improved anti-leak property is provided. A silver oxide battery includes: a positive electrode canister having a form of a cylinder with a bottom portion; a negative electrode canister having a form of a cylinder with a lid portion and being contained in the positive electrode canister; and an electrolytic solution contained within a space formed by the positive electrode canister and the negative electrode canister. The negative electrode canister is formed into a shape of a double-step cylinder having decreasing inner diameters toward the lid portion. The double-step cylinder has a first cylindrical portion that defines a cylindrical portion closer to the lid portion, and a second cylindrical portion that defines a cylindrical portion farther from the lid portion. The first cylindrical portion has a first inner curved surface that projects out at a first apex. The second cylindrical portion has a second inner curved surface that projects out at a second apex.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 21, 2014
    Applicant: Seiko Instruments Inc.
    Inventor: Mitsunori ITOH
  • Patent number: 8808895
    Abstract: A battery may have a foil battery pack with leads that are coupled to a printed circuit board. Battery protection structures formed from an insulating material such as plastic may be used to protect the foil battery pack. The foil battery pack may have a rectangular shape with front and rear faces surrounded by a rectangular peripheral edge. The battery protection structures may have a ring shape that surrounds the peripheral edge while leaving the front and rear faces exposed to minimize the size of the battery protection structures. An elastomeric material may be used to form the battery protection structures. The elastomeric material may allow the battery protection structures to stretch when the battery pack expands during use. Two shots of plastic may be incorporated into the battery protection structures to provide both puncture resistance and the ability to stretch during use.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 19, 2014
    Assignee: Apple Inc.
    Inventors: Shayan Malek, Miguel C. Christophy, Jared M. Kole
  • Patent number: 8728652
    Abstract: Provided is a cylindrical alkaline battery in which the packing density Dc of the manganese dioxide in the positive electrode is 2.8 to 3.0 g/cm3 and the packing density Da of zinc or a zinc alloy in the negative electrode is 2.0 to 2.3 g/cm3. The packing density Dc of the manganese dioxide, the packing density Da of the zinc or zinc alloy, the thickness Tc of the positive electrode in a radial direction, and the thickness Ta of the negative electrode in a radial direction satisfy one of the following relational formulas (1) to (3): ?1.975×(Tc/Ta)+2.745<Dc/Da<?1.690×(Tc/Ta)+2.734??(1) ?11.652×(Tc/Ta)2+14.470×(Tc/Ta)?3.095<Dc/Da<11.652×(Tc/Ta)2?18.420×(Tc/Ta)+8.585??(2) ?8.895×(Tc/Ta)2+12.864×(Tc/Ta)?3.258<Dc/Da<8.895×(Tc/Ta)2?16.244×(Tc/Ta)+8.726??(3).
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: May 20, 2014
    Assignee: Panasonic Corporation
    Inventors: Tadaya Okada, Yasuhiko Syoji
  • Patent number: 8673483
    Abstract: A sealed battery with an electrode assembly and electrolyte enclosed in a battery case is provided, where a connection member can be attached to the battery case without requiring large space while avoiding increasing the length of the lead wire. The sealed battery includes: a battery case enclosing an electrode assembly and electrolyte, for serving as a terminal of one polarity of the electrode assembly; an external terminal provided on the battery case in such a way that it is electrically insulated from the battery case, for serving as a terminal of another polarity of the electrode assembly; and a sealant member for sealing a fill port for the electrolyte provided side by side with the external terminal on the battery case. A connection member to which a lead wire is to be connected is provided on the battery case to cover at least part of the sealant member.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 18, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventor: Ryosuke Kitamura
  • Patent number: 8541131
    Abstract: A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode that is exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. One of the cathode and the anode includes a first portion and a second portion disposed in spaced relationship from the first portion. The other of the cathode and the anode is disposed between the first and second portions.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: September 24, 2013
    Assignee: Medtronic, Inc.
    Inventors: Jeffrey S. Lund, Steven J. May, Donald R. Merritt, Hailiang Zhao
  • Patent number: 8435656
    Abstract: A secondary battery including a first bare cell, a second bare cell disposed to face at least a portion of the first bare cell, and a protection circuit module including a circuit board having an electrical circuit device mounted thereon and at least one connection tab between the first and second bare cells, the connection tab electrically connecting the circuit board to the first and second bare cells.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: May 7, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seok Koh, Seokryun Park
  • Patent number: 8389148
    Abstract: Separator for cylindrical cell of the outwardly guided type, wherein a sheet material is wound around a mandrel, and starting from the winding step until the insertion of a separator into the cell, an outward support is used that renders the binding of neighboring turns of the separator winding unnecessary, and the separator sheet has an extended portion, with the extension being at least equal to the radius of the separator cylinder, and with this extended portion being wetted with distilled or de-ionized water until the material softens and the winding and the mandrel are rotated and the bottom part is folded back and heat fused to close the separator cylinder.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: March 5, 2013
    Assignee: Hibar Systems Ltd.
    Inventor: Djuro Slivar
  • Patent number: 8357466
    Abstract: A battery cover latching assembly includes a body member defining a guiding slot, a battery cover slidably mounted to the body member, and an elastic member. The battery cover includes a resisting block. The resisting block is slidably received in the guiding slot. The elastic member abuts against the resisting block.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: January 22, 2013
    Assignee: Chi Mei Communication Systems, Inc.
    Inventor: Cheng-Lung Chang
  • Publication number: 20120208073
    Abstract: An electrochemical storage cell including a housing; a solid electrolyte tube, which defines an inner space of the housing as a first electrode chamber and a second electrode chamber; a first electrode material in the first electrode chamber; a second electrode material in the second electrode chamber; and an electron channel unit arranged in the second electrode chamber for guiding movement of electrons in the second electrode chamber, the electron channel unit having a non-constant thickness.
    Type: Application
    Filed: July 20, 2011
    Publication date: August 16, 2012
    Inventor: Jeong-Doo YI
  • Patent number: 8236444
    Abstract: A low volume collector assembly and an electrochemical cell employing a collector assembly are provided. The electrochemical cell includes an electrically conductive can having inner and outer electrodes disposed therein. The cell also includes a collector assembly assembled to an open end of the can to provide closure to the open end of the can. The collector assembly includes a seal and a cover assembled to the seal to provide a sealed closure to the open end of the can. The cover includes an integrally formed current collector portion that contacts one end of the inner electrode. The cover serves as a current collector and also serves as a contact terminal of the cell.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: August 7, 2012
    Assignee: Eveready Battery Company, Inc.
    Inventors: Ning Cui, Urs Krebs, Peter R. Tsai
  • Publication number: 20120148902
    Abstract: A cable-type secondary battery is disclosed. The cable-type secondary battery includes electrodes, each of which includes a current collector having a horizontal cross section of a predetermined shape and an active material layer formed on the surface of the current collector. The electrodes extend in the lengthwise direction and are arranged in parallel. The current collector includes a polymer core and a metal coating layer formed on the surface of the polymer core. The use of the metal-coated polymer current collectors having high flexibility and conductivity makes the secondary battery highly flexible while maintaining the performance of the secondary battery. In addition, the cable-type secondary battery can be reduced in weight.
    Type: Application
    Filed: February 17, 2012
    Publication date: June 14, 2012
    Inventors: Yo-Han Kwon, Je-Young Kim, Ki-Tae Kim, Heon-Cheol Shin, Hyung-Man Cho, Hye-Ran Jung
  • Patent number: 7985501
    Abstract: An integral cap assembly comprising a top cap mounted as a base plate to an opening of a battery can and a cap subassembly including a protective circuit module and the like integrally mounted on the top cap, a method for manufacturing a secondary battery comprising the same, and a secondary battery manufactured thereby are disclosed. The cap assembly is provided as an integral member comprising the top cap acting as the base plate, and the cap subassembly having the protective circuit module provided thereon, thereby simplifying a manufacturing process of the battery while minimizing frequency of defective products. Additionally, the integral cap assembly is manufactured through insert injection molding, thereby providing notable advantages over the conventional technology.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 26, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hyungchan Kim, Hee gyu Kim, Yong-ho Cho, Jae sik Chung
  • Patent number: 7897282
    Abstract: An AA alkaline battery according to the present invention includes: a positive electrode; a negative electrode; a separator; an alkaline electrolyte; and a negative electrode current collector. The negative electrode contains zinc, indium, and bismuth. The weight of zinc is 4.0 g or more, and the total weight of indium and bismuth is 450 ppm or less with respect to the weight of zinc. The negative electrode current collector contains copper. Tin is provided on at least part of the surface of the negative electrode current collector.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: March 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Yasuhiko Bito, Fumio Kato, Harunari Shimamura
  • Patent number: 7682730
    Abstract: A cathode having a groove extending about 10 to about 450 microns into a surface of the cathode. The cathode can also be roughened.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: March 23, 2010
    Assignee: The Gillette Company
    Inventors: Terry Copeland, Stuart M. Davis, Tae-Won Lee, Alexander A. Leef, Gary A. Miller, Shuming Zeng
  • Patent number: 7648797
    Abstract: An integral cap assembly comprising a top cap mounted as a base plate to an opening of a battery can and a cap subassembly including a protective circuit module and the like integrally mounted on the top cap, a method for manufacturing a secondary battery comprising the same, and a secondary battery manufactured thereby are disclosed. The cap assembly is provided as an integral member comprising the top cap acting as the base plate, and the cap subassembly having the protective circuit module provided thereon, thereby simplifying a manufacturing process of the battery while minimizing frequency of defective products. Additionally, the integral cap assembly is manufactured through insert injection molding, thereby providing notable advantages over the conventional technology.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: January 19, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyungchan Kim, Hee gyu Kim, Yong-ho Cho, Jae sik Chung
  • Patent number: 7537860
    Abstract: An alkaline battery according to the present invention includes: a power generation element including a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and an electrolyte; a positive terminal portion electrically connected to the positive electrode; and a negative terminal portion electrically connected to the negative electrode. The negative electrode contains zinc powder or zinc alloy powder containing 15% by weight or more of particles having a particle size of 75 ?m or less as a negative active material. A PTC element is provided in a current path that does not come into contact with the electrolyte at least one of between the positive electrode and the positive terminal portion and between the negative electrode and the negative terminal portion.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: May 26, 2009
    Assignee: Panasonic Corporation
    Inventors: Yasuhiko Shoji, Susumu Kato
  • Patent number: 7407724
    Abstract: A battery cell, such as a cylindrical or prismatic alkaline cell, is disclosed having significantly improved capacity utilization at mid-range power levels of discharge by implementing a curvilinear-like inner electrode configuration that provides moderated surface area between the inner and outer electrodes as compared to high-power discharge applications utilizing a densely corrugated geometry for the inner electrode.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: August 5, 2008
    Assignee: Rechargeable Battery Corporation
    Inventors: Brendan Coffey, Charles Edward Sesock, David Manko, Bhavesh Patel, John Gordon
  • Patent number: 7393440
    Abstract: The present invention provides a system for generating hydrogen gas in an aqueous solution based electrolytic or galvanic cell wherein the cathode is made from aluminum or an aluminum alloy. In a preferred arrangement the cell is a galvanic cell and cathode is made from aluminum or aluminum alloy and the anode is made from magnesium or magnesium alloy.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: July 1, 2008
    Assignee: National Research Council of Canada
    Inventors: Debabrata Ghosh, Asoke Chandra Das Chaklader, Zhaolin Tang, Zhong Xie
  • Patent number: 7344803
    Abstract: An alkaline primary cell which is improved in reduction of self-discharge and cell capacity under storage at a high temperature, has a prolonged life and makes use of nickel oxyhydroxide is provided inexpensively. ?-Form nickel oxyhydroxide is contained in a positive electrode mixture as an active material, which contains cobalt and zinc as a substitutional element for solid solution, and has a total amount X+Y of molar ratios of cobalt atom X and zinc atom Y such that 2?X+Y?16, with a mixing ratio satisfying the relationship of Y?3/2×X+1/2 and Y?2/3×X ?1/3, and where a diffraction peak obtained as a result of measurement of X-ray powder diffraction of nickel oxyhydroxide appears only in the vicinity of 18.5° within a range of 2?=10°-30°.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: March 18, 2008
    Assignees: FDK Corporation, Tanaka Chemical Corporation
    Inventors: Shinichi Ueki, Yoshiro Harada, Mitsuhiro Nakamura, Hiroto Sagisaka, Takeshi Miyazaki
  • Patent number: 7264904
    Abstract: A battery cell, such as a cylindrical alkaline cell, is disclosed having significantly improved capacity utilization at high discharge rates while maintaining much of the energy content and other feature advantages of typical cylindrical alkaline cells, by implementing a novel cell construction that produces increased surface area between the anode and cathode. One particular characterization of the cell construction of the present invention comprises an electrochemical battery cell comprising a cell housing defining an interior space having an interior surface, a first terminal and a second terminal. The cell further comprises an inner electrode encapsulated by a separator and disposed within the interior space of the housing. The inner electrode has a thin cross section in a folded configuration and is formed such that an outer extent of the inner electrode is generally conforming to a contour defined by the interior surface of the cell housing.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: September 4, 2007
    Assignee: Rechargeable Battery Corporation
    Inventors: Brendan Coffey, Charles Edward Sesock, Ramesh C. Kainthla, David John Manko, Quincy Glenn Holloter
  • Patent number: 7074516
    Abstract: An electrochemical cell is presented having a gasket that is sealed against the container to prevent electrolyte leakage during normal operation. When the internal pressure of the cell reaches a predetermined threshold, the seal is removed, thereby permitting electrolyte to escape through a vent.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: July 11, 2006
    Assignee: Rovcal, Inc.
    Inventors: Gregory J. Davidson, David R. Mihara
  • Patent number: 7045247
    Abstract: A cathode having a groove extending about 10 to about 450 microns into a surface of the cathode. The cathode can also be roughened.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 16, 2006
    Assignee: The Gillette Company
    Inventors: Terry Copeland, Stuart M. Davis, Tae-Won Lee, Alexander A. Leef, Gary A. Miller, Shuming Zeng
  • Patent number: 6878483
    Abstract: An object of the present invention is to provide a separator which is excellent in sticking and adhesion capability with the solid electrolyte, physically strong and highly heat-resistive and to provide a solid electrolyte condenser which is excellent in the impedance characteristic and leak current characteristic. In a solid electrolyte condenser comprising an anode foil, a cathode foil, a separator, the separator is made of a nonwoven fabric containing polyester resin or its derivative manufactured by the wet method. The condenser element is formed by rolling the anode foil and the cathode foil together with the separator between them. The solid electrolyte is provided between the anode foil and the cathode foil of the condenser element.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: April 12, 2005
    Assignees: Nippon Kodoshi Corporation, Matsushita Electric Industrial Co., Ltd.
    Inventors: Munehiro Morokuma, Yukihiro Nitta, Taiji Mizobuchi, Teruyuki Jinzenji, Masaaki Yanase
  • Patent number: 6849357
    Abstract: The present invention relates to a battery using a case of which the section of the lower part containing an electric element is square or hexagonal and the section of the upper part containing a sealing plate is circular or elliptic. By virtue of the shape of the lower part the space efficiency of the battery pack is enhanced and by virtue of the shape of the upper part the productivity of the battery is improved. Further, preferably, the corners of the lower part of the case are rounded or chamferred, whereby the temperature rise in the battery pack is suppressed.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: February 1, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Kasahara, Masumi Katsumoto, Masaharu Miyahisa, Yoshihiro Boki
  • Patent number: 6833217
    Abstract: A cathode that includes manganese dioxide and relatively small particles of nonsynthetic, nonexpanded graphite is disclosed. The graphite particles can have an average particle size of less than 20 microns. The cathode can be used in an electrochemical cell, such as a battery.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: December 21, 2004
    Assignee: Duracell Inc.
    Inventors: Douglas J. Woodnorth, Peter B. Harris, Gregory A. Fariss, Barbara Brys
  • Patent number: 6828061
    Abstract: An electrochemical cell with a separator having a reinforced edge that provides structural rigidity to the separator after it has been contacted by the cell's electrolyte. The reinforced edge extends beyond the interface between the cell's electrodes and serves to contain fragmented pieces from one of the cell's electrodes that may become dislodged when the cell is dropped.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: December 7, 2004
    Assignee: Eveready Battery Company, Inc.
    Inventor: Robert M. Janmey
  • Publication number: 20040115531
    Abstract: An alkaline primary cell which is improved in reduction of self-discharge and cell capacity under storage at a high temperature, has a prolonged life and makes use of nickel oxyhydroxide is provided inexpensively. &bgr;-Form nickel oxyhydroxide is contained in a positive electrode mixture as an active material, which contains cobalt and zinc as a substitutional element for solid solution, and has a total amount X+Y of molar ratios of cobalt atom X and zinc atom Y such that 2≦X+Y≦16, with a mixing ratio satisfying the relationship of Y≦3/2×X+1/2 and Y≧2/3×X−1/3, and where a diffraction peak obtained as a result of measurement of X-ray powder diffraction of nickel oxyhydroxide appears only in the vicinity of 18.5° within a range of 2&thgr;=10°-30°.
    Type: Application
    Filed: January 8, 2004
    Publication date: June 17, 2004
    Inventors: Shinichi Ueki, Yoshiro Harada, Mitsuhiro Nakamura, Hiroto Sagisaka, Takeshi Miyazaki
  • Patent number: 6677079
    Abstract: An electrochemical cell is provided having a non-cylindrical container including one or more side walls each having a curved surface that curves radially inward. The electrochemical cell further includes first and second electrodes and a separator disposed therebetween. A cover and seal assembly is assembled to the top open end of the container. The radially inwardly curved surface of the side walls opposes forces caused by internal pressure within the cell so as to reduce and/or prevent bulging of the side walls.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: January 13, 2004
    Assignee: Eveready Battery Company, Inc.
    Inventor: Marc P. Keleman
  • Patent number: 6656629
    Abstract: An electrochemical cell construction having a large anode-to-cathode interfacial surface area to realize improved high rate service performance in an easy-to-manufacture construction. A first electrode, such as the cathode, is formed having a conductive current collector integrally embedded therein. Separator material is disposed on both the inner and outer cylindrical walls of the first electrode. An outer electrochemically active material covers the outer separator material outside of the first electrode and an outer insulation is layered on top of the outer electrochemically active material to form a cathode bobbin. The cathode bobbin is disposed into a container having a closed bottom end and an open top end. A second electrode, such as an anode, is disposed in the inner cylindrical volume formed in the first electrode and a conductive path is provided between the outer electrochemically active material and the second electrode.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: December 2, 2003
    Assignee: Eveready Battery Company, Inc.
    Inventor: Dale R. Getz
  • Patent number: 6653016
    Abstract: An electrochemical cell having a cell can that includes an interior surface, a current collector, a solid cathode contained in the can and in conductive contact therewith, an organic or solid polymer electrolyte comprising lithium salt solutes and aprotic organic solvents has improved storage properties when a coating comprising carbon powder is diposed on the current collector surface and on the adjacent interior surface of the cell can. Further, the cell has advantageous enhanced discharge properties over an expanded temperature range when the cathode additionally comprises a fluoropolymer resin binder.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: November 25, 2003
    Assignee: Rayovac Corporation
    Inventors: Cecilia T. Maske, Gerald Sanden, Zhihong Jin, Patrick Spellman, Janna L. Rose
  • Patent number: 6627349
    Abstract: An electrochemical cell and an electrode for use in an electrochemical cell is provided. The electrochemical cell has a container, a positive electrode disposed in the container and having a wall defining an interface surface, a negative electrode disposed in the container, a separator located between the positive and negative electrodes, and an electrolyte. The second electrode has a unitary piece of electrochemically active material having multiple openings formed in a circumferential surface. The unitary piece may include a slotted tube, first and second members, or a coiled strip.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: September 30, 2003
    Assignee: Eveready Battery Company, Inc.
    Inventors: Lewis F. Urry, John C. Bailey
  • Patent number: 6566008
    Abstract: A sealed alkaline storage battery using, as a positive electrode active material, nickel oxyhydroxide including Mn as a solid-solution element and having a &ggr; ratio of 65 through 100%; a sealed alkaline storage battery using, as a positive electrode active material, nickel oxyhydroxide including as an additive or coated with a rare earth element and/or a rare earth compound in a ratio measured based on the rare earth element of 0.05 through 5 wt %; and a sealed alkaline storage battery including, as a positive electrode active material, nickel oxyhydroxide having a half-width of a peak in a lattice plane (003) in an X-ray diffraction pattern of 0.8° or more. The pressure within the battery is not largely increased for a long period of charge-discharge cycles, and hence, the electrolyte hardly leaks.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: May 20, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Mutsumi Yano, Syuichi Suzuki, Mitsunori Tokuda, Mitsuzou Nogami, Mamoru Kimoto, Shin Fujitani, Koji Nishio
  • Publication number: 20030091895
    Abstract: A water-activated primary battery using magnesium or alloys thereof as the anode and a cathode of various material having a redox potential allowing a charge transfer reaction is described, said battery comprising one or more electrochemical cells enclosed in a casing (1), characterized in that it contains a pH buffer system formed by at least one acid having a ionization constant Ka≦0.
    Type: Application
    Filed: June 28, 2001
    Publication date: May 15, 2003
    Inventor: Fernando Zocchi
  • Patent number: 6517975
    Abstract: In electrochemical cells for medical devices having anodes assemblies, an anode assembly includes a folded lithium element having a first and second section. The first and second sections are for receiving a current collector therebetween. A method of forming an anode arrangement includes a step of folding a lithium element having the first and second sections with a current collector positioned therebetween. Thereafter, a pressing step is performed.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: February 11, 2003
    Assignee: Medtronic, Inc.
    Inventor: Bernard F. Heller, Jr.
  • Patent number: 6482543
    Abstract: An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: November 19, 2002
    Assignee: The Gillette Company
    Inventors: Alexander B. Shelekhin, Matthew R. Sylvestre, David V. Adamson, Michael F. Roberts, Tae-Won Lee
  • Publication number: 20020160262
    Abstract: An electrochemical cell and an electrode for use in an electrochemical cell is provided. The electrochemical cell has a container, a positive electrode disposed in the container and having a wall defining an interface surface, a negative electrode disposed in the container, a separator located between the positive and negative electrodes, and an electrolyte. The second electrode has a unitary piece of electrochemically active material having multiple openings formed in a circumferential surface. The unitary piece may include a slotted tube, first and second members, or a coiled strip.
    Type: Application
    Filed: April 26, 2001
    Publication date: October 31, 2002
    Inventors: Lewis F. Urry, John C. Bailey
  • Patent number: 6472099
    Abstract: An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 29, 2002
    Assignee: The Gillette Company
    Inventors: Tae-Won Lee, Shuming Zeng, Kenneth R. Taylor, George Cintra, Philip D. Trainer, Alexander B. Shelekhin
  • Patent number: 6444364
    Abstract: A battery, such as an alkaline battery, that can provide a high energy output at a high rate and that has a relatively high ratio of manganese dioxide to cathode volume is disclosed. The battery can provide high energy output at a high rate when the battery is intermittently subjected to a high energy load.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: September 3, 2002
    Assignee: The Gillette Company
    Inventors: Peter Harris, David Adamson, Douglas Woodnorth, Barbara Brys, Martin Howard
  • Publication number: 20020106558
    Abstract: An electrochemical cell having a cell can that includes an interior surface, a current collector, a solid cathode contained in the can and in conductive contact therewith, an organic or solid polymer electrolyte comprising lithium salt solutes and aprotic organic solvents has improved storage properties when a coating comprising carbon powder is diposed on the current collector surface and on the adjacent interior surface of the cell can. Further, the cell has advantageous enhanced discharge properties over an expanded temperature range when the cathode additionally comprises a fluoropolymer resin binder.
    Type: Application
    Filed: April 23, 2001
    Publication date: August 8, 2002
    Inventors: Cecilia T. Maske, Gerald Sanden, Zhihong Jin, Patrick Spellman, Janna L. Rose
  • Patent number: 6423438
    Abstract: A method of sealing an end of a battery container is disclosed. The method includes: (a) providing a plurality of supports in a wall of the container toward the end of the container; (b) scoring the wall of the container at a position between the end of the container and the supports; (c) inserting a top assembly into the container such that the top assembly contacts the supports; and (d) folding an edge of the container over the top assembly.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: July 23, 2002
    Assignee: The Gillette Company
    Inventors: Robert Payne, Gary M. Searle
  • Patent number: 6410187
    Abstract: A primary alkaline battery includes a housing, a cathode within the housing, an anode within the housing, and a separator electrically separating the anode and the cathode. The battery has a substantial (S/V)2 value.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: June 25, 2002
    Assignee: The Gillette Company
    Inventors: Weifang Luo, Bhupendra K. Patel, Alexander B. Shelekhin, John D. Sillesky, Viet H. Vu, Douglas Woodnorth
  • Patent number: 6368738
    Abstract: An air depolarized cell comprises an anode, a cathode, including an air cathode assembly openly exposed to the ambient environment and/or defining at least a portion of the outer surface of the cell. The cell can comprise a bottom member defining a bottom of the cell, and a top member defining a top of the cell, the air cathode assembly extending between the bottom member and the top member as the exposed or outer portion of the cell. An anode cavity can be disposed inwardly of the separator and upwardly of the bottom member, and contain a mass of electroactive anode material. An elongate anode current collector preferably extends into the anode material. The top member can comprise a top contour washer having inner and outer downwardly depending legs receiving an upper edge portion of the cathode assembly in a slot therebetween, and an insulating grommet in the slot, electrically insulating the cathode assembly from the top contour washer and sealing against liquid leakage out of the cell through the slot.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: April 9, 2002
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, Gregory Scott Moy
  • Patent number: 6326102
    Abstract: An electrochemical cell construction having a large anode-to-cathode interfacial surface area to realize improved high rate service performance in an easy-to-manufacture construction. A first electrode, such as the cathode, is formed having a conductive current collector integrally embedded therein. Separator material is disposed on both the inner and outer cylindrical walls of the first electrode. An outer electrochemically active material covers the outer separator material outside of the first electrode and an outer insulation is layered on top of the outer electrochemically active material to form a cathode bobbin. The cathode bobbin is disposed into a container having a closed bottom end and an open top end. A second electrode, such as an anode, is disposed in the inner cylindrical volume formed in the first electrode and a conductive path is provided between the outer electrochemically active material and the second electrode.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: December 4, 2001
    Assignee: Eveready Battery Company, Inc.
    Inventor: Dale R. Getz
  • Patent number: 6312848
    Abstract: An electrical accumulator having a case in the form of a button cell which is closed such that it is gastight, including a case cover and a case cup with an interposed electrically insulating seal, which contain an electrode set including positive and negative electrodes as well as interposed separators, with at least two electrodes of one polarity being mechanically. and electrically connected at at least two points on their circumference in such a manner that a mechanically robust electrode packet results. The invention furthermore relates to a method for producing such a rechargeable battery.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: November 6, 2001
    Assignee: Varta Geratebatterie GmbH
    Inventors: Manfred Kilb, Dejan Ilic, Eduard Pytlik, Siegfried Weitbrecht
  • Patent number: 6261709
    Abstract: This invention teaches an elongate air depolarized electrochemical cell. The cell has a cathode, including an air cathode assembly, and a separator disposed inwardly of the air cathode assembly. A bottom member defines a bottom of the cell. An anode cavity, defined inwardly of the separator and the bottom member, receives a mass of electroactive anode material. An elongate hollow tube anode current collector is in electroactive contact with the mass of electroactive anode material. The anode current collector preferably has an enlarged cross-section such that the average distance between the anode current collector and the separator is reduced, thereby to reduce the overall mass of electroactive anode material used in the cell.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: July 17, 2001
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, Gregory Scott Moy, Michael Andrew Ward
  • Publication number: 20010002300
    Abstract: A cylindrical metal-air cell has a cylindrical housing, an axially extending cylindrical air cathode adjacent an interior surface of the housing, and a plurality of elongate plenums defined between the oxygen electrode and the interior surface of the housing. Isolating passageway are positioned between the ambient environment and each of the plenums, and an air moving device is operable to force air through the isolating passageways and into at least one of the plenums. The air moving device may be a micromachined blower controlled by a circuit integrated into the housing of the blower.
    Type: Application
    Filed: January 18, 2001
    Publication date: May 31, 2001
    Applicant: AER Energy Resources, Inc.
    Inventors: Lawrence A. Tinker, R. Dennis Bentz