Bipolar Type Patents (Class 429/210)
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Patent number: 8535824Abstract: An electrochemical device has one or more electrodes in electrical communication with a tab assembly. The tab assembly includes a tab having one or more clad regions. Each clad region includes a metal clad onto the tab.Type: GrantFiled: January 25, 2006Date of Patent: September 17, 2013Assignee: Quallion LLCInventors: Hiroshi Nakahara, Sang Young Yoon
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Patent number: 8530083Abstract: An electrode is used for an electric storage device that includes plural electrodes that are stacked such that an ion-conductive layer is disposed between each pair of the electrodes. Each of the plural electrodes includes a current collector, and an electrode layer, formed on the current collector, which contains an active material. The configuration of the electrode layer (for example, the amount of the active material) varies according to the position in the electrode layer such that a current density in a first region of the electrode, where heat radiation performance is lower than the heat radiation performance in a second region of the electrode, is lower than the current density in the second region of the electrode.Type: GrantFiled: April 13, 2012Date of Patent: September 10, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yoshiyuki Nakamura
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Patent number: 8530085Abstract: A negative electrode active material including nanometal particles and super-conductive nanoparticles and a lithium battery including the same.Type: GrantFiled: September 3, 2010Date of Patent: September 10, 2013Assignee: Samsung SDI Co., Ltd.Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Sean Do, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-mi Yu
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Patent number: 8486567Abstract: An electrochemical device having an anode electrode, a cathode electrode, and an electrolyte. At least one of the anode electrode and the cathode electrode is provided with a substantially uniform superficial relief pattern formed by a plurality of substantially uniform projections and has an electrical conductivity gradient between peaks of the projections and valleys between the projections.Type: GrantFiled: May 10, 2010Date of Patent: July 16, 2013Assignee: Gas Technology InstituteInventors: Qinbai Fan, Ronald Stanis
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Patent number: 8481197Abstract: A bipolar secondary battery includes a plurality of bipolar electrodes, each including a current collector that has a positive electrode layer on one surface thereof and a negative electrode layer on the opposite surface thereof. A separator is disposed between adjacent two bipolar electrodes such that the positive electrode layer of one bipolar electrode and the negative electrode layer of the adjacent bipolar electrode adjacent are opposed to each other along the length of the separator. The positive electrode layer and the negative electrode layer are formed with protrudent portions disposed at positions offset from each other along a length of the current collector.Type: GrantFiled: September 25, 2009Date of Patent: July 9, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Masanobu Sato, Kenji Hosaka, Hideaki Horie, Yoshio Shimoida, Masanori Aoyagi
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Patent number: 8481208Abstract: The invention provides bipolar articles (e.g., batteries and capacitors) with new architectures and methods of making and using the same. Articles are provided with interpenetrating anode and cathode structures that allow for improved power density, and arbitrary form factors that allow for formation in substantially any desired shape. The articles are useful for embedding or integral formation in various electronic devices to provide more efficient use of space in the devices. The articles optionally include self-organizing bipolar structures.Type: GrantFiled: June 16, 2010Date of Patent: July 9, 2013Assignee: A123 Systems, LLCInventors: Gilbert N. Riley, Jr., Yet-Ming Chiang, Antoni S. Gozdz, Michael S. Viola, Ricardo Fulop
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Patent number: 8460812Abstract: A lithium secondary battery obtained by the present invention has a negative electrode sheet 20 in which the theoretical capacities of the negative active material per unit area are equalized in a negative active material layer 24b on the outer circumference side and a negative active material layer 24a on the inner circumference side of a negative electrode collector 22, and at least one of the following conditions is met with respect to at least part of a bent section 85, which is bent toward the inside of a wound electrode body 80: (1) the percentage content of binder of the outer negative active material layer 24b is smaller than the percentage content of binder of the inner negative active material layer 24a; and (2) the density of the outer negative active material layer 24b is smaller than the density of the inner negative active material layer 24a.Type: GrantFiled: December 17, 2009Date of Patent: June 11, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Takahata, Hideki Sano
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Patent number: 8460402Abstract: A gasket for a bipolar battery comprises a structural part in the shape of a frame having an upper surface and a lower surface, and at least one channel to permit gas passage through the gasket. The structural part may be made from a first material having hydrophobic properties. The gasket further comprises at least a first sealing surface arranged in a closed loop projecting from the upper surface, and at least a second sealing surface arranged in a closed loop projecting from the lower surface. The first and the second sealing surfaces are provided on at least one sealing part, are made from a second material, and the first material of the structural part has a higher elastic modulus than an elastic modulus of the second material of the sealing parts. A bipolar battery and a method for manufacturing a gasket are also disclosed.Type: GrantFiled: January 25, 2012Date of Patent: June 11, 2013Assignee: Nilar International ABInventors: David Hock, Lars Fredriksson, Neil H. Puester
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Publication number: 20130130096Abstract: Light-weight VRLA batteries comprise a thin lead substrate that is supported by non-conductive, preferably plastic frames that provide structural stability to accommodate stress and strain in the bipole assembly. In particularly preferred batteries, the plastic frames are laser welded together and phantom grids and electrode materials are coupled to the respective sides of the lead substrate. Where the phantom grid is an ultra-thin lead grid, the lead grid is preferably configured to provide a corrosion reserve of less than 10 charge-discharge cycles and the bipole assembly is charged in an in-tank formation process. Where the phantom grid is a non-conductive grid, the lead grid is preferably a plastic grid and the bipole assembly is charged in an in-container formation process. Consequently, weight, volume, and production costs are significantly reduced while specific energy is substantially increased.Type: ApplicationFiled: March 4, 2011Publication date: May 23, 2013Applicant: AIC BLABInventor: Frank Lev
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Patent number: 8445139Abstract: The disclosure relates to bipolar cells including electrodes surrounding a collector. Embodiments of the bipolar cells include a collector containing a high-polymer material. The disclosure also relates to bipolar electrode batteries containing bipolar cells including a collector body containing electrically conductive high-polymer or electrically conductive particles distributed in a high-polymer. By adding such high molecular weight polymer material to the collector, the weight of the collector may be reduced and the output power density per weight of the battery may be improved. The disclosure further relates to methods of forming collecting bodies and electrodes for bipolar cells using an inkjet printing method. Bipolar cells according to the present invention may be used to fabricate batteries such as lithium ion batteries, which may be connected to form battery modules used, for example, to provide electrical power for a motor vehicle.Type: GrantFiled: December 7, 2005Date of Patent: May 21, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Hosaka, Osamu Shimamura, Hideaki Horie, Takamitsu Saito, Takuya Kinoshita, Takaaki Abe, Naoto Kiriu
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Publication number: 20130122362Abstract: A bipolar electrode is composed of a first active material layer which is, for example, a positive electrode active material layer formed to include a first active material on one side of a collector, and a second active material layer which is, for example, a negative electrode active material layer formed to include a second active material with less compressive strength than that of the first active material on the other side of the collector. Then, a density adjusting additive which is an additive material with larger compressive strength than that of the second active material is included in the second active material layer.Type: ApplicationFiled: July 21, 2011Publication date: May 16, 2013Inventors: Masanobu Sato, Yasuo Ohta, Hideaki Horie, Masanori Aoyagi
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Publication number: 20130101903Abstract: The invention relates to an electrochemical lithium accumulator comprising at least one first electrochemical cell and at least one second electrochemical cell separated from each other by a current-collecting substrate, which substrate supports on a first face, an electrode of said first electrochemical cell, and on its second face opposite to said first face, an electrode of opposite sign of said second electrochemical cell, each cell comprising a positive electrode and a negative electrode separated by an electrolyte, characterized inter alio in that said current-collecting substrate is in copper or in copper alloy.Type: ApplicationFiled: June 15, 2011Publication date: April 25, 2013Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Céline Barchasz, Marianne Chami, Sébastien Martinet, Sébastien Patoux
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Patent number: 8415049Abstract: The present invention provides a bipolar battery made by using a polymer gel electrolyte or a liquid electrolyte in an electrolyte layer, which is highly reliable and prevents liquid junction (short circuit) caused by leak out of an electrolyte solution from the electrolyte part. The present invention provides a bipolar battery laminated, in series, with a plurality pieces of bipolar electrodes which is formed with a positive electrode on one surface of a collector, and a negative electrode on the other surface, so as to sandwich an electrolyte layer, characterized by being provided with a separator which retains the electrolyte later, and a seal resin which is formed and arranged at the outer circumference part of a part of the separator where the electrolyte is retained.Type: GrantFiled: September 22, 2011Date of Patent: April 9, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Shimamura, Kenji Hosaka, Kyoichi Watanabe, Takaaki Abe, Takuya Kinoshita, Hideaki Horie, Hajime Sato, Ryouichi Senbokuya
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Publication number: 20130065110Abstract: A bipolar battery plate is utilized for production of a bipolar battery. The bipolar battery plate includes a frame, a substrate, first and second lead layers, and positive and negative active materials. The substrate includes insulative plastic with conductive particles homogeneously dispersed throughout the insulative plastic and exposed along surface of the substrate, the substrate positioned within the frame. The first lead layer is positioned on one side of the substrate, while the second lead layer is positioned on another side of the substrate. The first and second lead layer are electrically connected to each through the conductive particles. The positive active material is positioned on a surface of the first lead layer, and the negative active material positioned on a surface of the second lead layer.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Inventor: Thomas Faust
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Publication number: 20130065106Abstract: A bipolar battery plate is utilized for production of a bipolar battery. The bipolar battery plate includes a frame, a substrate, a conductive filler, first and second lead layers, and positive and negative active materials. The substrate includes a plurality of perforations through the substrate, and the substrate is positioned within the frame. The conductive filler seals the perforations. The first lead layer is positioned on one side of the substrate, while the second lead layer is positioned on another side of the substrate. The first and second lead layers are electrically connected to each through the conductive filler sealing the perforations. The positive active material is positioned on a surface of the first lead layer, while the negative active material is positioned on a surface of the second lead layer.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Inventor: Thomas Faust
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Publication number: 20130065105Abstract: A bipolar battery plate is utilized for production of a bipolar battery. The bipolar battery plate includes a frame, a substrate, first and second lead layers, and positive and negative active materials. The substrate includes a plurality of perforations through the substrate, and the substrate is positioned within the frame. The first lead layer is positioned on one side of the substrate, while the second lead layer is positioned on another side of the substrate. The first and second lead layers are electrically connected to each through the plurality of perforations. The positive active material is positioned on a surface of the first lead layer, while the negative active material is positioned on a surface of the second lead layer.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Inventor: Thomas Faust
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Publication number: 20130040194Abstract: A layered composite material which is suitable, in particular, for use in a redox flow battery, contains at least one layer of a textile fabric and at least one graphite-containing molded body which is obtained by a method in which graphite particles are mixed with at least one solid organic additive to form a mixture and the thus obtained mixed is then compressed.Type: ApplicationFiled: December 31, 2010Publication date: February 14, 2013Applicant: SGL CARBON SEInventors: Oswin Öttinger, Rainer Schmitt, Jürgen Bacher, Sylvia Mechen, Bastian Hudler
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Patent number: 8372539Abstract: A substrate useful for the formation of, inter alia, a flow field plate for a proton exchange membrane fuel cell, the substrate formed of at least one resin-impregnated sheet of compressed particles of exfoliated graphite comprising two major surfaces, the substrate having an active area with flow field channels thereon, the sheet of compressed particles of exfoliated graphite having a local web thickness in at least about 50% of its active area that is no more than about 55% greater than the minimum web thickness of the active area of the substrate.Type: GrantFiled: September 26, 2007Date of Patent: February 12, 2013Assignee: GrafTech International Holdings Inc.Inventors: Daniel W. Krassowski, Thomas W. Weber, David J. Stuart, Jeffery J. Gough, Robert A. Mercuri, Jeremy H. Klug
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Publication number: 20130022852Abstract: Methods for improving the electrical conductivity of a carbon felt material is provided. In some embodiments, a method improving the electrical conductivity of a carbon felt material comprises applying a carbon source liquid to at least a portion of a carbon felt material, optionally removing excess carbon source liquid from the carbon felt material, and converting the carbon source material to solid carbon, such as by heating. Also provided are materials and products created using these methods.Type: ApplicationFiled: January 12, 2012Publication date: January 24, 2013Applicant: EnerVault CorporationInventors: On Kok Chang, Kimio Kinoshita, Ronald James Mosso
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Patent number: 8357469Abstract: A bipolar battery construction is disclosed comprising a substrate, openings in the substrate, an electrically conductive material placed within the openings, a negative and positive current collector foil placed on opposing sides of the substrate and negative and positive pasting frame members. The electrically conductive material may have a melting point below the thermal degradation temperature of the substrate.Type: GrantFiled: January 20, 2010Date of Patent: January 22, 2013Assignee: Advanced Battery Concepts, LLCInventors: Edward Otto Shaffer, II, William Buttfield Brecht
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Patent number: 8323829Abstract: An electrode is used for an electric storage device that includes plural electrodes that are stacked such that an ion-conductive layer is disposed between each pair of the electrodes. Each of the plural electrodes includes a current collector, and an electrode layer, formed on the current collector, which contains an active material. The configuration of the electrode layer (for example, the amount of the active material) varies according to the position in the electrode layer such that a current density in a first region of the electrode, where heat radiation performance is lower than the heat radiation performance in a second region of the electrode, is lower than the current density in the second region of the electrode.Type: GrantFiled: August 22, 2007Date of Patent: December 4, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yoshiyuki Nakamura
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Patent number: 8304103Abstract: A battery structure for improving a heat dissipating property and a vibration absorbing performance. The battery structure comprises a plurality of unit cell layers, each formed by alternately stacking a cathode active material layer formed on a surface of one collector, a separator for retaining an electrolyte and an anode active material layer formed on a surface of another collector. The battery structure also comprises a heat dissipating member disposed between at least one unit cell layer and another unit cell layer.Type: GrantFiled: May 17, 2007Date of Patent: November 6, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Kyoichi Watanabe, Hajime Sato, Kenji Hosaka, Hideaki Horie
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Publication number: 20120270088Abstract: An all solid state rechargeable oxide-ion (ROB) battery (30) has a thermal energy storage (TES) unit (20) between two oxide-ion cells (22, 24) with metal-metal oxide electrodes (34, 36, 40, 42) on opposite sides of an anion conducting solid electrolyte (32,38) where none of the electrodes is contact with air.Type: ApplicationFiled: April 21, 2011Publication date: October 25, 2012Inventors: Kevin Huang, Chun Lu, James L. Shull, Shih-Yu W. Liu, Gong Zhang, Kevin P. Litzinger
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Publication number: 20120251896Abstract: An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionicaily conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.Type: ApplicationFiled: May 15, 2012Publication date: October 4, 2012Applicant: Massachusetts Institute of TechnologyInventors: Yet-Ming Chiang, William Douglas Moorehead
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Patent number: 8277975Abstract: The effective ionic conductivity in a composite structure is believed to decrease rapidly with volume fraction. A system, such as a bipolar device or energy storage device, has structures or components in which the diffusion length or path that electrodes or ions must traverse is minimized and the interfacial area exposed to the ions or electrons is maximized. The device includes components that can be reticulated or has a reticulated interface so that an interface area can be increased. The increased interfacial perimeter increases the available sites for reaction of ionic species. Many different reticulation patterns can be used. The aspect ratio of the reticulated features can be varied. Such bipolar devices can be fabricated by a variety of methods or procedures. A bipolar device having structures of reticulated interface can be tailored for the purposes of controlling and optimizing charge and discharge kinetics.Type: GrantFiled: July 19, 2010Date of Patent: October 2, 2012Assignee: Massachusetts Intitute of TechnologyInventors: Yet-Ming Chiang, Benjamin Hellweg
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Publication number: 20120237816Abstract: A bipolar battery may include a substrate having a matrix made of a thermoset polymer formed from a liquid precursor. One or more conductive pellets can be disposed in the matrix to provide electrical connection between opposite sides of the matrix. Each conductive pellet has a characteristic thickness that is greater than a thickness of the matrix. Each of the one or more conductive pellets protrudes beyond first and second surfaces of the matrix.Type: ApplicationFiled: March 15, 2011Publication date: September 20, 2012Applicant: YottaQ, Inc.Inventors: Martin R. Roscheisen, Brent J. Bollman, Hak Fei Poon, Zhengyu Wu, Boris Monahov, Sam Kao
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Patent number: 8263247Abstract: An electrolyte injection hole is formed in a current collector extension part between negative and positive active material layers of a quasi-bipolar electrode, and another electrolyte injection hole corresponding to the electrolyte injection hole of the quasi-bipolar electrode is formed in a sidewall of a hollow core around which the electrode is wound, so as to easily inject a predetermined amount of electrolyte into each unit cell of an electrode assembly through an electrolyte injection port and the core. Therefore, simple, reliable, and easy-to-manufacture electrochemical cell can be provided.Type: GrantFiled: October 10, 2008Date of Patent: September 11, 2012Assignee: Kim's Techknowledge Inc.Inventor: Seong Min Kim
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Patent number: 8263259Abstract: Bipolar plates and end plates for fuel cell stacks. The bipolar plates or end plates may include semi-conductive or conductive bodies, intricate features with close tolerances such as narrow flow channels and conduits with complex flow paths, integral resistive heating elements, internal catalytic reforming capability, integral heat exchanging structure, substantially flat and undistorted contact faces, integral sensors, and internal recuperative heat exchanging capacity. Methods of making bipolar plates and end plates for fuel cell stacks. The methods involve a range of integrated processing techniques that enable a flexible approach to bipolar and end plate design. In addition, the ability to reliably produce features on a small scale allows for the potential miniaturization of bipolar plates and end plates and is therefore ideally suited to further the development of small scale portable fuel cell systems.Type: GrantFiled: April 5, 2004Date of Patent: September 11, 2012Assignee: Eveready Battery Company, Inc.Inventor: Daniel A. Kearl
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Publication number: 20120223681Abstract: Electrodes as well as electrode production methods are provided that can include a substrate with the substrate comprising non-conductive material. Batteries including electrodes of the disclosure are provided. Electricity storage methods are provided that can utilize the electrodes and/or batteries of the disclosure.Type: ApplicationFiled: February 29, 2012Publication date: September 6, 2012Inventors: Bradley W. Stone, Alfred T. Volberding
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Publication number: 20120208082Abstract: A bipolar secondary battery current collector is a bipolar secondary battery current collector having electrical conductivity. The current collector has an expansion section that expands in a thickness direction of the current collector at a temperature equal to or higher than a prescribed temperature.Type: ApplicationFiled: November 4, 2010Publication date: August 16, 2012Applicant: NISSAN MOTOR CO., LTD.Inventor: Takashi Honda
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Publication number: 20120183847Abstract: Contemplated bipolar lead acid batteries include a bipole assembly with a monolithic or composite current collector that is in contact with the PAM. Especially preferred current collectors have a substrate formed from pure lead and grid formed from a lead alloy, wherein the interface between the grid and substrate is formed via electroforming and/or resistance welding. Particularly preferred batteries are configured as deep cycle batteries and have a low ratio between the surface area of the grid and the weight of the PAM.Type: ApplicationFiled: May 18, 2010Publication date: July 19, 2012Applicant: AIC BLABInventors: Frank Lev, Leonid Rabinovich
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Publication number: 20120171567Abstract: The present invention is intended to provide a method of producing a sealing structure of a bipolar battery capable of improving the sealing capability by means of solidifying the joint between a resin collector comprising a thermosetting resin before the setting reaction and a sealing layer, a method of producing the bipolar battery, and the sealing structure of the bipolar battery and the bipolar battery. The method of producing the sealing structure of the bipolar battery comprises s step of producing the sealing assembly 80 by joining the first sealing layer 81 consisting of thermosetting resin before the thermosetting reaction with the second sealing layer 82 consisting of the thermoplastic resin, and a step of producing the collector assembly 90 formed by sealing the contact area of the sealing assembly and the resin collector 60 by joining the sealing assembly with the thermosetting resin after the thermosetting reaction.Type: ApplicationFiled: February 7, 2011Publication date: July 5, 2012Inventors: Motoharu Obika, Kenji Hosaka
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Publication number: 20120156559Abstract: A method of sealing together two elements of a bipolar battery, the method comprising: interposing an inductive heating element between the two elements; applying a current to the inductive heating element to generate localised heat to melt material in the vicinity of the heating element to seal the two elements together.Type: ApplicationFiled: June 30, 2010Publication date: June 21, 2012Applicant: ATRAVERDA LIMITEDInventors: Gavin Davies, Allan Turtle
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Patent number: 8182940Abstract: A redox fuel stack cell comprises a plurality of essentially similar half-cell frames of molded polymer; interleaved between them are semi-permeable membranes and bipolar plate electrodes. The frames are rectangular, with margins around central voids. At the voids, they have rebates in abutting faces for locating the plate electrodes. At their corners, they have apertures for forming ducts throughout the stack for flow of electrolyte to and from the cell cavities provided by the voids. The frames have electrolyte flow passages open in their faces abutting the frames and leading towards each other. The passages stop short of each other and are surrounded by grooves containing sealing O-rings. Diagonally opposite one of the passages end at openings passing through the frames. The other passages have no openings in the frames, but the frames have openings through them in register with the ends of the passages.Type: GrantFiled: April 5, 2006Date of Patent: May 22, 2012Assignee: Renewable Enery Dynamics Technology Ltd.Inventor: Peter John Ridley
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Patent number: 8168326Abstract: An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.Type: GrantFiled: July 30, 2009Date of Patent: May 1, 2012Assignees: A123 Systems, Inc., Massachusetts Institute of TechnologyInventors: Yet-Ming Chiang, William D. Moorehead, Antoni S. Gozdz, Richard K. Holman, Andrew L. Loxley, Gilbert N. Riley, Jr., Michael S. Viola
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Patent number: 8163421Abstract: A rechargeable battery and a method of fabricating which includes stacking a plurality of electrode pages having an uncoated portion between portions coated with an active electrode material. The electrode pages are arranged in a stack and an overall current collector is connected at the uncoated portion in order to form an electrode booklet. The overall current collector maintains the arrangement of the electrode pages and electrically connects all of the uncoated portions of the electrode pages. A tilted stack of electrode pages is utilized when a large number of electrodes are desired to result in a battery cell having a vertical orientation.Type: GrantFiled: March 9, 2009Date of Patent: April 24, 2012Inventors: Tsun-Yu Chang, Chun-Chieh Chang, Han Cheng Kuo
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Patent number: 8148010Abstract: A bipolar battery and a battery assembly unit that reduces a current density change in a battery element is disclosed. The bipolar battery comprises a battery element configured by alternately stacking a bipolar electrode and an electrolyte layer, as well as cathode and anode terminal plates electrically connected to the battery element so as to extract the current from the battery element. In the bipolar battery, the total electrical resistance of the cathode and anode terminal plates along the surface direction is smaller than the total electrical resistance of the battery element along the stacking direction between the cathode and anode terminal plates.Type: GrantFiled: November 28, 2007Date of Patent: April 3, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Hosaka, Hideaki Horie, Hajime Satou, Yoshio Shimoida, Teruo Segawa, Gen Takayama, Ohtani Yoshihiko
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Patent number: 8129049Abstract: Disclosed herein is a jelly-roll type electrode assembly (“jelly-roll”) of a cathode/separator/anode structure, wherein the jelly-roll is constructed in a structure in which each electrode has active material layers formed on opposite major surfaces of a sheet-type current collector, the loading amount of an active material for the inner active material layer, constituting the inner surface of each sheet when each sheet is wound, is less than that of an active material for the outer active material layer, constituting the outer surface of each sheet when each sheet is wound, and the loading amount of the active material for the inner active material layer gradually increases from the central region of each wound sheet to the outermost region of each wound sheet.Type: GrantFiled: March 24, 2008Date of Patent: March 6, 2012Assignee: LG Chem, Ltd.Inventors: Jong Hee Kim, Dongmyung Kim, Hyungook Yoon, Yong Jeong Kim, Joo-Hwan Sung, Seung W. Chu, Sung-Pil Yoon, Dohyun Lee
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Patent number: 8124276Abstract: A bipolar battery includes: a bipolar electrode composed, by forming a positive electrode active material layer 12 an one surface of a current collector and forming a negative electrode active material layer 13 on the other surface; and a separator 14 composed to be stacked alternately with the bipolar electrode, wherein, in a single cell layer 15 composed by including the positive electrode active material layer 12, the separator 14 and the negative electrode active material layer 13, which are adjacent to one another, a thickness of the separator 14 is 0.68 times or more to less than 1.0 times a thickness of the positive electrode active material layer 12, and is 0.68 times or more to less than 1.0 times a thickness of the negative electrode active material layer 13.Type: GrantFiled: November 9, 2006Date of Patent: February 28, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Kyoichi Watanabe, Takaaki Abe, Takamitsu Saito, Osamu Shimamura, Kenji Hosaka, Hajime Sato, Hideaki Horie
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Patent number: 8124268Abstract: A gasket 20; 40; 80 for use in a starved electrolyte bipolar battery comprises a structural part 27; 44; 82 in the shape of a frame having an upper surface 1 and a lower surface 2, and at least one channel 23, 24; 83, 84 to permit gas passage through the gasket. The structural part is made from a first material having hydrophobic properties. The gasket 20; 40; 80 further comprises at least a first sealing surface 30; 47; 91 arranged in a closed loop projecting from the upper surface 1, and at least a second sealing surface 30; 47; 92 arranged in a closed loop projecting from the lower surface 2. The first and the second sealing surfaces are provided on at least one sealing part 26; 41, 41; 81, are made from a second material, and the first material of the structural part 27; 44; 82 has a higher elastic modulus than an elastic modulus of the second material of the sealing parts 26; 41, 42; 81. A starved electrolyte bipolar battery and a method for manufacturing a gasket are also disclosed.Type: GrantFiled: August 9, 2007Date of Patent: February 28, 2012Assignee: Nilar International ABInventors: David Hock, Lars Fredriksson, Neil H. Puester
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Patent number: 8114543Abstract: A lithium ion secondary battery, having a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode, the positive electrode and the negative electrode each having a collector and an active material layer provided over the collector, and the relationship Ts?4Tc being satisfied, where Ts is the puncture strength of the separator, and Tc is the puncture strength of the collector of the positive electrode and/or the negative electrode.Type: GrantFiled: December 11, 2006Date of Patent: February 14, 2012Assignee: TDK CorporationInventors: Atsushi Sano, Tsuyoshi Iijima
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Publication number: 20120021268Abstract: A bipolar battery including unit cells fitted with an element including a first electronic conductive support, a second electronic conductive support, an electronic conductive connection connecting the first and the second support, with each support including a first and a second face separate from the first and second faces of the other support, a positive electrode material deposited on one of the faces of the first conductor, and a negative electrode material deposited on one of the faces of the other support. The positive electrode material is supported by the first support, and is positioned facing a negative electrode material, the negative electrode material is supported by the second support, and is positioned opposite a positive electrode material, where the facing electrode materials are separated by an insulator containing an electrolyte, thus forming two juxtaposed unit cells.Type: ApplicationFiled: March 24, 2010Publication date: January 26, 2012Applicant: Commissariat A L'Energie Atomique et Aux Ene AltInventors: Sophie Mailley, Pascal Tiquet
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Publication number: 20110305927Abstract: A bipolar lead acid battery comprises a compression resistant separator in which the electrolyte is retained in a gelled form, and wherein quasi-bipolar electrodes are maintained in a cell stack under pressure. Most preferably, the negative active material further includes a compression resistant spacer structure and the battery is configured as a VR-BLAB where each single cell can independently vent gases during the charge cycle.Type: ApplicationFiled: April 29, 2009Publication date: December 15, 2011Applicant: AIC BLABInventors: Frank Lev, Robert Lewis Clarke, Leonid Rabinovich
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Publication number: 20110305948Abstract: Provided is a bipolar battery current collector that includes a conductive resin layer formed in such a manner as to, when at least part of the conductive resin layer reaches a predetermined temperature, interrupts a flow of electric current through the at least part of the conductive resin layer in a vertical direction thereof. Also provided is a bipolar battery using the current collector. It is possible by the use of the current collector to suppress local heat generation in the bipolar battery and improve the durability of the bipolar battery.Type: ApplicationFiled: January 28, 2010Publication date: December 15, 2011Inventors: Kazuki Miyatake, Kenji Hosaka, Yoshio Shimoida, Hideaki Horie
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Patent number: 8076021Abstract: The present invention provides a bipolar battery made by using a polymer gel electrolyte or a liquid electrolyte in an electrolyte layer, which is highly reliable and prevents liquid junction (short circuit) caused by leak out of an electrolyte solution from the electrolyte part. The present invention provides a bipolar battery laminated, in series, with a plurality pieces of bipolar electrodes which is formed with a positive electrode on one surface of a collector, and a negative electrode on the other surface, so as to sandwich an electrolyte layer, characterized by being provided with a separator which retains the electrolyte later, and a seal resin which is formed and arranged at the outer circumference part of a part of the separator where the electrolyte is retained.Type: GrantFiled: December 9, 2005Date of Patent: December 13, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Shimamura, Kenji Hosaka, Kyoichi Watanabe, Takaaki Abe, Takuya Kinoshita, Hideaki Horie, Hajime Sato, Ryouichi Senbokuya
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Publication number: 20110294007Abstract: A bipolar secondary battery has a battery element that includes first and second bipolar electrodes each having a collector disposed with a conductive resin layer containing a first resin as a base material and positive and negative electrode active material layers formed on opposite sides of the collector and a separator containing a second resin as a base material, arranged between the first and second bipolar electrodes and retaining an electrolyte material to form an electrolyte layer. The positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constitute a unit cell. A melting point of the first resin is lower than or equal to a melting point of the second resin. Outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell.Type: ApplicationFiled: January 28, 2010Publication date: December 1, 2011Inventors: Kenji Hosaka, Motoharu Obika
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Publication number: 20110294008Abstract: A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).Type: ApplicationFiled: July 19, 2011Publication date: December 1, 2011Inventors: Edgar Lara-Curzio, Ke An, James O. Kiggans, JR., Nancy J. Dudney, Cristian I. Contescu, Frederick S. Baker, Beth L. Armstrong
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Publication number: 20110281159Abstract: A method for producing a multi-layer bipolar coated cell according to one embodiment includes applying a first active cathode material above a substrate to form a first cathode; applying a first solid-phase ionically-conductive electrolyte material above the first cathode to form a first electrode separation layer; applying a first active anode material above the first electrode separation layer to form a first anode; applying an electrically conductive barrier layer above the first anode; applying a second active cathode material above the anode material to form a second cathode; applying a second solid-phase ionically-conductive electrolyte material above the second cathode to form a second electrode separation layer; applying a second active anode material above the second electrode separation layer to form a second anode; and applying a metal material above the second anode to form a metal coating section. In another embodiment, the anode is formed prior to the cathode. Cells are also disclosed.Type: ApplicationFiled: May 12, 2010Publication date: November 17, 2011Inventors: Joseph C. Farmer, James Kaschmitter, Steve Pierce
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Publication number: 20110274968Abstract: The present invention provides composite electrodes that comprise a titanium metal filler and a polymeric material. Advantageously the composite electrodes of the present invention do not suffer from the problems of carbon degradation, are thermally stable, are easily shaped, which demonstrate high power densities and which are relatively inexpensive to produce.Type: ApplicationFiled: December 23, 2009Publication date: November 10, 2011Applicant: ITI SCOTLAND LIMITEDInventors: Stephen Harrison, Chulheung Bae, David Hodgson
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Publication number: 20110274969Abstract: A low cost, high specific energy and long cycle life lead acid battery includes polymer/metal current collectors. For intermediate electrodes, a current collector includes two polymer grids and a metal foil that is disposed between two grids, and for terminal electrodes, a current collector includes a polymer grid, a polymer sheet and a metal foil that is disposed between the polymer grid and sheet. The surfaces of the grids and metal foil are coated by different conductive and corrosion-resistant composites. The current collectors can be configured as monopolar or bipolar electrodes.Type: ApplicationFiled: May 10, 2010Publication date: November 10, 2011Inventor: Xiaogang Wang