Including Flow Field Means (e.g., Separator Plate, Etc.) Patents (Class 429/514)
  • Patent number: 10686199
    Abstract: A fuel cell anode flow field includes at least one flow channel with a cross-sectional area that varies along at least a portion of its length. In some embodiments, the channel width decreases along at least a portion of the channel length according to a natural exponential function. This type of anode flow field can improve performance, reduce fuel consumption and/or reduce detrimental effects such as carbon corrosion and catalyst degradation, thereby improving fuel cell longevity and durability. When operating the fuel cell on either a substantially pure or a dilute fuel stream, this type of anode flow field can provide more uniform current density. These flow channels can be incorporated into reactant flow field plates, fuel cells and fuel cell stacks.
    Type: Grant
    Filed: February 14, 2015
    Date of Patent: June 16, 2020
    Assignee: Loop Energy Inc.
    Inventors: David E. Leger, Greg J. Montie
  • Patent number: 10658694
    Abstract: The invention relates to a polar plate for a fuel cell, comprising at least one single plate with two opposing main sides, wherein the single plate has, on at least one of its main sides: elevations and free spaces arranged therebetween, which form a flow structure for an operating medium of the fuel cell; and spring projections which are arranged on the elevations and are designed to yield in case of a force effect taking place orthogonally to the main sides. Furthermore, the invention relates to a fuel cell stack with a polar plate according to the invention.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 19, 2020
    Assignees: VOLKSWAGEN AG, AUDI AG
    Inventors: Adel Jilani, Sanjiv Kumar
  • Patent number: 10629868
    Abstract: The present application relates to a battery module and an end plate of the battery module. The end plate includes a body and connecting plates connected to edges of the body. The body has a different material from that of the connecting plate. The connecting plates extend along a height direction of the battery module. The body is fixedly connected to side plates of the battery module through the connecting plates. When the end plate is designed, the body can utilize a lower density material, so that the thickness of the body can be appropriately increased, which enables the case of the battery module to be not easily deformed due to the battery's expansion force. Further, the connecting plate can employ a material capable of improving the weld strength between the end plates and the side plates.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 21, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventor: Gen Cao
  • Patent number: 10516167
    Abstract: A bipolar plate assembly for a fuel cell includes a cathode plate disposed adjacent an anode plate. The cathode and anode plates are formed having a first thickness of a low contact resistance, high corrosion resistance material by a deposition process. The first and second unipolar plates are formed on a removable substrate, and a first perimeter of the first unipolar plate is welded to a second perimeter of the second unipolar plate to form a hermetically sealed coolant flow path.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: December 24, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Gayatri Vyas Dadheech, Gerald W. Fly
  • Patent number: 10381660
    Abstract: A separator for a fuel cell includes a thin metal plate, a protrusion formed on the thin metal plate, a gas passage formed by the protrusion, and a trap that is formed by forming a recess in a wall portion of the protrusion such that the trap is provided in the gas passage to correspond to the recess.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 13, 2019
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Patent number: 10381659
    Abstract: A fuel cell is provided that includes a cell structure, a pair of separators and a plurality of at least partially porous ribs. The cell structure includes an anode, a cathode and an electrolyte membrane, the anode and the cathode being laminated on opposite sides of the electrolyte membrane, respectively. The separators are disposed on both surfaces of the cell structure with gas passages being defined by the separators and the cell structure for circulating two types of gas for power generation. The porous ribs porous ribs are disposed successively on an entire cross-section of the gas passage in a transverse direction with a flow direction of the gas for power generation.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 13, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Koudai Yoshizawa
  • Patent number: 10381657
    Abstract: A bipolar plate for a fuel cell comprises a fiber reinforcement structure containing thermoplastically bonded carbon fibers, the fiber reinforcement structure being multilayered and comprising a plurality of fiber reinforcement structure layers, at least two of which contain thermoplastically bonded carbon fibers.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 13, 2019
    Assignee: Röchling Automotive SE & Co. KG
    Inventors: Fabrizio Chini, Edoardo Martelli, Manfred Kampke
  • Patent number: 10283785
    Abstract: An amorphous carbon film contains carbon as a main component, not more than 30 at. % of hydrogen, not more than 20 at. % of nitrogen and not more than 3 at. % of oxygen (all excluding 0 at. %), and when the total amount of the carbon is taken as 100 at. %, the amount of carbon having an sp2 hybrid orbital is not less than 70 at. % and less than 100 at. %. Nitrogen and oxygen are concentrated on a surface side of the film and when detected from a surface layer by X-ray photoelectron spectroscopy, oxygen content ratio is not less than 4 at. % and not more than 15 at. % and nitrogen content ratio is not less than 10 at. % and not more than 30 at. %.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Iseki, Kazuyuki Nakanishi, Yasuhiro Ozawa, Naoki Ueda, Masafumi Koizumi
  • Patent number: 10256479
    Abstract: A bipolar plate, including conductive sheets, and in which flow channels are made between the conductive sheets and are in communication with a coolant inlet and outlet manifolds. An outer face of a conductive sheet includes first ribs delimiting reactant flow channels, and a second rib extending on the side of the reactant flow channels. A sealing gasket extends at least partially on the second rib. The outer face of the conductive sheet further includes third ribs extending between a first rib and the second rib, between which an alternation of third ribs and of indentation is formed. The sheets are in contact at the level of indentations, and respective passages are formed under the third ribs.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 9, 2019
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Jean-Philippe Poirot-Crouvezier
  • Patent number: 10224563
    Abstract: A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate, the frame body including a frame-facing surface that is to face, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction, wherein the frame-facing surface has a surface roughness Ra of 0.03 ?m or more and 3.2 ?m or less.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: March 5, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hayato Fujita, Takashi Kanno, Kenji Motoi, Takeshi Yamana
  • Patent number: 10138340
    Abstract: A bilayer object consisting of a carbon fiber reinforced polymer substrate coated with a composition of matter comprising horizontally aligned exfoliated graphene sheets dispersed in an epoxy binder. A method includes depositing graphene into a hardener, mixing the hardener and the graphene to produce a homogenous composite mixture, adding a resin material to the composite mixture to produce an epoxy graphene material, coating a structure with the epoxy graphene material, aligning the graphene sheets in the in-plane orientation, and curing the epoxy graphene material.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: November 27, 2018
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Gabriel Iftime, Quentin Van Overmeere, David Mathew Johnson
  • Patent number: 10050287
    Abstract: A bipolar plate, including conductive sheets. An outer face of one of the conductive sheets includes first ribs, a second rib, and third ribs. The first ribs delimit fuel flow channels and the second rib extends on the side of the reactant flow channels, on which a gasket extends. Between a first rib and the second rib, the third ribs extend and an alternation of third ribs and of indentations is formed. The height between the third ribs and the indentations are at least equal to 75% of the total height of the flow channels. An outer face of the other of the conductive sheets includes fourth ribs and fifth ribs. The fourth ribs delimit oxidant flow channels. The fifth rib extends plumb with the second rib and a gasket extends along the fifth rib.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 14, 2018
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventor: Jean-Philippe Poirot-Crouvezier
  • Patent number: 9966612
    Abstract: The fuel flow channels (20a) of the end fuel cell (9a) at the anode end (34) of a fuel cell stack are significantly deeper than the fuel flow field channels (20) of the remaining fuel cells (9) in the stack, whereby fuel starvation caused by ice in the fuel flow channels is avoided during cold startup. The fuel flow field channels of the end cell (9) at the anode end of the stack is between about 0.15 mm and about 1.5 mm deeper than the fuel flow field channels in the remaining fuel cells of the stack, or between about 35% and about 65% deeper than the fuel flow field channels in the remaining fuel cells of the stack.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 8, 2018
    Assignee: Audi AG
    Inventors: Timothy W. Patterson, Jr., Robert M. Darling
  • Patent number: 9960433
    Abstract: A gas channel forming member is located between a separator and a membrane electrode assembly. The gas channel forming member includes gas channels, which are arranged in parallel with each other on a surface that faces the membrane electrode assembly, water channels, which are formed on a surface that faces the separator, and inner communication passages. The water channels are each located between adjacent two of the gas channels. The inner communication passages communicate the gas channels and the water channels with each other. Each water channel is formed such that the flow cross-sectional area in an outlet section including an outlet opening is larger than the cross-sectional area of an upstream section, which is upstream of an adjacent to the outlet section in the flow direction of the oxidant gas.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 1, 2018
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Keiji Hashimoto, Kousuke Kawajiri, Satoshi Futami
  • Patent number: 9902113
    Abstract: There is provided a method for manufacturing a three-dimensional shaped object, comprising the steps of: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing sintering of the powder of the predetermined portion or melting and subsequent solidification thereof; and (ii) forming another solidified layer by newly forming a powder layer on the resulting solidified layer, and then irradiating another predetermined portion of the new powder layer with the light beam, the steps (i) and (ii) being repeatedly performed, wherein the three-dimensional shaped object is manufactured such that it has three different solidified portions of high-density, intermediate-density and low-density solidified portions in at least a part of the object, and wherein the intermediate-density solidified portion is formed to be located in a part of a surface of the three-dimensional shaped object.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 27, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Isamu Matsumoto, Satoshi Abe, Masataka Takenami, Yoshiyuki Uchinono
  • Patent number: 9865882
    Abstract: According to one embodiment, the noble metal catalyst layer includes first noble metal layer and a second noble metal layer formed on the first noble metal layer. The first noble metal layer includes a first noble metal element and has a porosity of 65 to 95 vol. %, a volume of pores having a diameter of 5 to 80 nm accounts for 50% or more of a volume of total pores in the first noble metal layer. The second noble metal layer includes a second noble metal element, and has an average thickness of 3 to 20 nm and a porosity of 50 vol. % or less.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: January 9, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Wu Mei, Shigeru Matake, Taishi Fukazawa, Yoshihiro Akasaka, Katsuyuki Naito
  • Patent number: 9748583
    Abstract: Bipolar plate assemblies are disclosed in which the transition fuel channels are offset from the transition oxidant channels in the transition regions on the active sides of the plates. This configuration allows for a reduced pressure drop in the coolant flow in the transition regions on the inactive, coolant side of the plates and thereby improves coolant flow sharing. The assemblies are suitable for use in high power density solid polymer electrolyte fuel cell stacks.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: August 29, 2017
    Assignees: Daimler AG, Ford Motor Company
    Inventors: Richard Fellows, Simon Farrington
  • Patent number: 9685651
    Abstract: In one example, a system for a flow cell for a flow battery, comprising: a first flow field; and a polymeric frame, comprising: a top face; a bottom face, opposite the top face; a first side; a second side, opposite the first side; a first electrolyte inlet located on the top face and the first side of the polymeric frame; a first electrolyte outlet located on the top face and the second side of the polymeric frame; a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet; and a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet. In this way, shunt currents may be minimized by increasing the length and/or reducing the cross-sectional area of the electrolyte inlet and electrolyte outlet flow paths.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 20, 2017
    Assignee: ESS Tech, Inc.
    Inventors: Craig Evans, Yang Song
  • Patent number: 9614244
    Abstract: A system for a flow cell for a hybrid flow battery, comprising: a redox plate comprising a plurality of electrolyte flow channels; conductive inserts attached to the redox plate between adjacent electrolyte flow channels; a redox electrode attached to a surface of the redox plate; a plating electrode, comprising: a plurality of folded fins with an oscillating cross-section, the plurality of folded fins comprising: a first planar surface; a second planar surface, parallel to the first planar surface; a plurality of ridges intersecting the first and second planar surfaces such that the plurality of ridges divide the first planar surface into a first plurality of strips, and divide the second planar surface into a second plurality of strips; and a membrane barrier. In this way, the capacity and performance of hybrid flow batteries may be maximized, through decreasing the reaction kinetics, mass transport and ohmic resistance losses at both electrodes.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: April 4, 2017
    Assignee: ESS Tech, Inc.
    Inventors: Craig Evans, Yang Song
  • Patent number: 9608281
    Abstract: A new conductive interconnected porous film, useful as a material for a gas diffusion layer which is used in a solid polymer type fuel cell, which satisfies the requirements of a good conductivity, good gas permeability, surface smoothness, corrosion resistance, and low impurities and which is strong in bending and excellent in handling to an extent not obtainable by existing sheet materials of carbon fiber, that is, a conductive interconnected porous film wherein a resin base material part of a thermoplastic resin has a porous interconnected cell structure which is formed by removal of removable particulate matter and has cells of sizes of 10 ?m to 50 ?m and wherein the resin base material part is comprised of different particle size particles of first carbon particles of large size carbon particles of a diameter of 5 ?m or more and second carbon particles of micro size carbon particles of a diameter of 10 nm or more mixed together, and a method of production of the same.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 28, 2017
    Assignee: FUTAMURA KAGAKU KABUSHIKI KAISHA
    Inventors: Takuzo Imaizumi, Hiroaki Nagata, Naoki Shiba
  • Patent number: 9461314
    Abstract: A fuel cell interconnect includes a first side containing a first plurality of channels and a second side containing a second plurality of channels. The first and second sides are disposed on opposite sides of the interconnect. The first plurality of channels are configured to provide a serpentine fuel flow field while the second plurality of channels are configured to provide an approximately straight air flow field.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 4, 2016
    Assignee: BLOOM ENERGY CORPORATION
    Inventor: James F. McElroy
  • Patent number: 9387656
    Abstract: A method for connecting component parts (1, 2, 3) of a fuel cell. A photochemically curable adhesive (5) is applied in liquid form at least regionally to at least one component part (1, 2, 3) of the fuel cell, is photochemically pre-cured, is brought into contact with at least one further component part (1, 2, 3) of the fuel cell and is cured. The photochemically curable adhesive (5) is photochemically pre-cured to differing degrees in at least two component part regions (B1, B2) of the component part (1, 2, 3). Furthermore, an apparatus for connecting component parts (1, 2, 3) of a fuel cell.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: July 12, 2016
    Assignee: Daimler AG
    Inventor: Christian Wulff
  • Patent number: 9337496
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MB) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 10, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Patent number: 9337495
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MBz) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 10, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Patent number: 9331343
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MBz) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 3, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Publication number: 20150140472
    Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 21, 2015
    Inventors: Dai Gil Lee, Ha Na Yu, Jun Woo Lim, Sae Hoon Kim, Jung Do Suh, Byung Ki Ahn
  • Patent number: 9034535
    Abstract: There is provided a flexible circuit board capable of preventing corrosion and elution of a conductor layer constituting a current collector even under high-temperature and high-voltage working conditions while achieving sufficient electric connection with an MEA. A flexible circuit board having a current collector of a fuel cell provided thereon includes an insulating flexible base material 1, a plurality of openings 5 that supply fuel or air, the openings 5 being provided in a specified region so as to penetrate through the flexible base material 1 in a thickness direction, a plating film 6 that constitutes the current collector, the plating film 6 being formed on front and back surfaces of the flexible base material 1 in the specified region and on inner walls of the openings 5, a surface treatment film 9 formed on the plating film 6 and having corrosion resistance higher than that of the plating film.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 19, 2015
    Assignee: NIPPON MEKTRON, LTD
    Inventor: Masanori Hirata
  • Publication number: 20150125782
    Abstract: A fuel cell plate assembly (400) comprising: a bipolar plate (102) having a port (104) for receiving a fluid; a fluid diffusion layer (210); and an electrode defining an active area (105). The fluid diffusion layer is configured to communicate a fluid received at the port (104) to the active area (105).
    Type: Application
    Filed: May 20, 2013
    Publication date: May 7, 2015
    Inventor: Peter David Hood
  • Publication number: 20150125777
    Abstract: A separator for fuel cells is provided. The separator includes: a base material; an underlying alloy layer formed on the base material; and a gold plate layer formed on the underlying alloy layer. The separator is characterized in that the underlying alloy layer is formed of an M1-M2-M3 alloy (where M1 is at least one element selected from Ni, Fe, Co, Cu, Zn and Sn, M2 is at least one element selected from Pd, Re, Pt, Rh, Ag and Ru, and M3 is at least one element selected from P and B).
    Type: Application
    Filed: January 13, 2015
    Publication date: May 7, 2015
    Inventor: Nobuaki MUKAI
  • Patent number: 9023547
    Abstract: A separator of a fuel cell includes a sandwiching section, first and second bridges connected to the sandwiching section, a fuel gas supply section connected to the first bridge and an oxygen-containing gas supply section connected to the second bridge. The sandwiching section sandwiches an electrolyte electrode assembly, and has a fuel gas channel and an oxygen-containing gas channel separately. In the sandwiching section, a plurality of first projections are arranged in a zigzag pattern in a direction in which the first bridge extends, and the first projections at least protrude toward the fuel gas channel to contact an anode.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: May 5, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroki Homma, Tsutomu Takahashi, Tetsuya Ogawa
  • Patent number: 9017895
    Abstract: A fuel cell plate assembly includes a first plate having a feed region and an active region. A plurality of flow channels is formed in the first plate and connects the feed region and the active region. The first plate further includes a first step oriented transverse to the flow channels in the feed region and a second step oriented transverse to the flow channels in the active region. The second step is formed only in the flow channels of the first plate.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jeffrey A. Rock, Gerald W. Fly, Steven J. Spencer
  • Patent number: 9005846
    Abstract: A partly oxidized substrate is disclosed. According to one aspect, the substrate is formed by subjecting a substrate made of a porous metal or metal alloy including particles of at least one metal or metal alloy bound by sintering. The substrate includes a first main surface and a second main surface. The porosity of the substrate gradually changes from the first main surface to the second main surface. The substrate is partially oxidized by an oxidizing gas such as oxygen and/or air. A method for preparing the substrate and high temperature electrolyzer (THE) cell including the substrate are also disclosed.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: April 14, 2015
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Julie Mougin, Thomas Pietri
  • Patent number: 9005834
    Abstract: A polymer electrolyte fuel cell comprises a plurality of stacked cells each having an ionic conductive electrolyte membrane, an anode placed on one side of the electrolyte membrane, a cathode placed on the other side of the electrolyte membrane, and a conductive separator on which a first refrigerant channel for flow of a refrigerant is formed in center part thereof. The separator comprises penetration holes constituting a manifold which extend in a direction of stacking of the plurality of cells and through which the refrigerant flows and second refrigerant channels for communication between the penetration holes and the first refrigerant channel. A plurality of protrusions that protrude into the penetration holes from parts of wall surfaces of the penetration holes that are located peripherally in connection parts between the penetration holes and the second refrigerant channels.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 14, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Mitsuo Yoshimura, Hirokazu Honkawa, Kenji Arai
  • Patent number: 8999603
    Abstract: A gas diffusion layer for fuel cell of the present invention is structured with a porous member mainly comprised of conductive particles such as acetylene black, graphite and a polymer resin such as PTFE. This makes it possible to achieve both an improvement in power generation performance of the fuel cell and a reduction in costs.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: April 7, 2015
    Assignee: Panasonic Corporation
    Inventors: Masaki Yamauchi, Yoichiro Tsuji
  • Patent number: 8999607
    Abstract: A compact of a support-member divided-member, which has a shape formed by dividing a support member into two in the thickness direction so as to divide the fuel channel into two in the thickness direction, is manufactured by a gel cast method in which slurry is filled in a molding die. A compact of a fuel-side electrode and a compact of an electrolyte are successively stacked on the upper surface of the compact of the support-member divided-member, whereby a compact of a cell divided member is obtained. The two compacts of the cell divided member are bonded and sintered, whereby an SOFC cell (sintered body) in which an oxygen-side electrode is not formed is formed. A compact of the oxygen-side electrode is formed respectively on the upper and lower surfaces of the sintered body, and then, the compact of the oxygen-side electrode is sintered, whereby the SOFC cell is completed.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: April 7, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Takuji Kimura, Kunihiko Yoshioka, Makoto Ohmori
  • Patent number: 8999605
    Abstract: One exemplary embodiment discloses a bipolar plate assembly including a cathode plate and an anode plate. Each of the cathode plate and the anode plate includes a core material, a first surface material coupled to a first side of the core material, and a second surface material coupled to a second side of the core material, wherein the first surface material and the second surface material have a different composition from the core material.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: April 7, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: John R. Bradley, Mahmoud H. Abd Elhamid
  • Publication number: 20150093671
    Abstract: A sub-assembly for an electrochemical stack, such as a PEM fuel cell stack, has a bipolar plate with sealing material extending from its upper face, around the edge of the bipolar plate, and onto its lower face. The bipolar plate is preferably a combination of an anode plate and a cathode plate defining an internal coolant flow field and bonded together by sealing material which also provides a seal around the coolant flow field. All of the sealing material in the sub-assembly may be one contiguous mass. To make the sub-assembly, anode and cathode plates are loaded into a mold. Liquid sealing material is injected into the mold and fills a gap between the edge of the plates, and portions of the outer faces of the plates, and the mold. In a stack, sub-assemblies are separated by MEAs which at least partially overlap the sealing material on their faces.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 2, 2015
    Inventor: David FRANK
  • Publication number: 20150093674
    Abstract: A separator of planar shape includes a plurality of grooves which are formed in a first surface of the separator serving as one surface facing a membrane electrode assembly and which extend along a first direction parallel to the first surface. The separator includes a protrusion formed in the first surface and enclosing a first hole, a second hole, and the plurality of grooves. The separator includes a cutout part located between two third holes adjacent to each other and formed by the one outer edge part of the separator approaching the protrusion and the plurality of grooves in a second direction. A collecting electrode plate includes: a cutout part formed at a position corresponding to the cutout part of the separator; and a terminal part extending from the cutout part of the collecting electrode plate toward the second direction.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Inventor: Atsuki Ikoma
  • Patent number: 8986905
    Abstract: A fuel cell interconnect includes a first side containing a first plurality of channels and a second side containing a second plurality of channels. The first and second sides are disposed on opposite sides of the interconnect. The first plurality of channels are configured to provide a serpentine fuel flow field while the second plurality of channels are configured to provide an approximately straight air flow field.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: March 24, 2015
    Assignee: Bloom Energy Corporation
    Inventors: James F. McElroy, Matthias Gottmann, Stephen Couse
  • Patent number: 8980494
    Abstract: A fuel cell is provided that includes a water transport plate separating an air flow field and a water flow field. The driving force for moving water across the water transport plate into the water flow field is produced by a differential pressure across a restriction. The restriction is arranged between an air outlet of the cathode water transport plate and a head of a reservoir that is in fluid communication with the water flow field.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: March 17, 2015
    Assignee: Ballard Power Systems Inc.
    Inventor: Jeremy P. Meyers
  • Patent number: 8980500
    Abstract: A polymer electrolyte fuel cell of the present invention includes a membrane-electrode assembly (5) and separators (6A, 6B). A plurality of reactant gas channels are formed on a main surface of at least one of the separator (6A, 6B) and a gas diffusion layer (3A, 3B). In a case where among the plurality of reactant gas channels, a reactant gas channel overlapping the peripheral portion of the electrode (4A, 4B) twice is defined as a first reactant gas channel, and a reactant gas channel formed to overlap the peripheral portion of the electrode (4A, 4B) and formed such that the length of a portion overlapping the peripheral portion is longer than a predetermined length is defined as a second reactant gas channel, the second reactant gas channel is formed such that the flow rate of a reactant gas flowing therethrough is lower than that of the reactant gas flowing through the first reactant gas channel or the second reactant gas channel does not exist.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: March 17, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shinsuke Takeguchi, Takeou Okanishi, Yoichiro Tsuji
  • Patent number: 8968966
    Abstract: Provided is a fuel battery including: a fuel battery cell assembly having at least two fuel battery cells coplanarly disposed, the fuel battery cell including a membrane electrode assembly having an anode, an electrolytic membrane, and a cathode stacked on one another in this order, and a flow channel plate provided on an anode side and having on an anode-side surface thereof an in-cell fuel flow channel through which liquid fuel flows; and a fuel distributor having an out-cell fuel flow channel connected to each of the in-cell fuel flow channels to distribute the liquid fuel to the fuel battery cells.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: March 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takenori Onishi, Tomohisa Yoshie, Hirotaka Mizuhata, Mutsuko Komoda, Shinobu Takenaka, Masashi Muraoka
  • Patent number: 8956767
    Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: February 17, 2015
    Inventors: Dai Gil Lee, Ha Na Yu, Jun Woo Lim, Sae Hoon Kim, Jung Do Suh, Byung Ki Ahn
  • Patent number: 8945796
    Abstract: A cell for a fuel cell, comprising a membrane electrode assembly, expanded moldings that are laminated to both surfaces of the membrane electrode assembly and form gas channels, and separators that are laminated to the gas channel structures and separate the gases between adjacent cells, wherein each of the expanded moldings comprises a gas channel substrate formed from a metal material such as a titanium material or a stainless steel, a conductive layer that is formed from a conductor such as gold on a contact portion of the gas channel substrate that contacts the membrane electrode assembly or the separator, and a hydrophilic layer that is formed from a hydrophilic material such as a titanium oxide on the gas channel surface of the gas channel substrate.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kuroudo Maeda, Hideyo Oomori
  • Publication number: 20150030964
    Abstract: According to an illustrative embodiment, a method of making a fuel cell component includes removing material from a first plurality of locations along at least one surface on a plate to simultaneously establish a plurality of first channels on the surface. Each first channel has a length between a first end near a first edge of the surface and a second end spaced from a second, opposite edge of the surface. Material is also removed from a second plurality of locations along the surface to simultaneously establish a plurality of second channels on the surface. Each second channel has a length beginning at a first end spaced from the first edge and a second end near the second edge. Material is also removed from the surface near the first ends of at least some of the first channels to simultaneously establish an inlet portion for directing a fluid into the corresponding first channels.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 29, 2015
    Inventors: Jonathan Daniel O'Neill, Roopnarine Sukhram, Glenn Michael Allen, Christopher John Carnevale
  • Publication number: 20150030888
    Abstract: Methods and systems for microbial fuel cells with unproved cathodes are provided, in accordance with some embodiments, methods for microbial fuel cells with improved cathodes are provided. The methods comprising: abiotically reducing oxygen on a cathode having a catalyst layer bound to a gas diffusion layer using an anion conductive polymer, consequently accumulating Off at the catalyst layer, and reducing local pH by conducting the OH? away from the catalyst layer, directly or by transport of anionic buffers that act as OH? carriers, through the anion conductive polymer, in accordance with some embodiments, a system for microbial fuel cells is provided. The system comprising: a container, an anode, anode-respiring bacteria, and a cathode having a catalyst layer bound to a gas diffusion layer using an anion conductive polymer.
    Type: Application
    Filed: February 20, 2013
    Publication date: January 29, 2015
    Applicant: Arizona Board of Regents, for and on behalf of, Arizona State University
    Inventors: Sudeep Popat, Cesar Torres, Bruce Rittmann, Dongwon Ki
  • Patent number: 8940457
    Abstract: Fluid distribution plate (1) for a fuel cell assembly, comprising a first plate (11) made of an electrically conductive material impermeable to all the fluids used in a fuel cell assembly, said distribution plate having a useful section (S) which is the surface over which the gases used by the electrochemical reaction are distributed, said useful section (S) being bordered all around by a peripheral section (P), said first plate having a given thickness e1 in the peripheral section and a smaller thickness e2 in the useful section so as to form a recess from the side facing the outer face and so as to have a flat inner surface, a flexible graphite foil (11C) being applied against said first plate (11) over the entire surface of the recess, the visible face of the flexible graphite foil having a distribution channel (111) for one of the fluids, said network being formed completely in the graphite foil.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 27, 2015
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Antonio Delfino, David Olsommer, Felix Buchi
  • Publication number: 20150024300
    Abstract: A gas diffusion layer having a first major surface and a second major surface which is positioned opposite to said first major surface and an interior between said first and second major surfaces is formed. The gas diffusion layer comprises a porous carbon substrate which is directly fluorinated in the interior and is substantially free of fluorination on at least one of the first major surfaces or the second major surfaces, and preferably both surfaces. The gas diffusion layer may be formed using protective sandwich process during direct fluorination or by physically or chemically removing the C—F atomic layer at the major surfaces, for example by physical plasma etching or chemical reactive ion etching.
    Type: Application
    Filed: January 18, 2013
    Publication date: January 22, 2015
    Applicant: UNIVERSITY OF KANSAS
    Inventors: Trung Van Nguyen, Xuhai Wang
  • Publication number: 20150024303
    Abstract: A fuel cell plate is provided that includes a flow field having a plurality of channels each with an inlet end, and a header in fluid communication with the inlet ends. The header has at least one restricted flow region in which fluid flow is restricted to the inlet ends of a set of channels of the flow field and at least some of the plurality of channels include a pressure drop feature that is configured to increase fluid flow to the set of channels.
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Inventors: John H. Whiton, David A. Niezelski, Robert A. Love, Edward Gordon Schaub
  • Patent number: 8932778
    Abstract: A fuel cell includes separators-sandwiching electrolyte electrode assemblies. The separators each include first and second fuel gas supply sections through which a fuel gas supply passage extends centrally, first and second bridges extending radially outwardly from the first and second fuel gas supply sections and first and second sandwiching sections connected to the first and second bridges. A fuel gas channel and an oxygen-containing gas channel are provided in the first and second sandwiching sections. Each of the first sandwiching sections has pairs of fuel gas outlets, and a fuel gas consumed in the fuel gas channel is discharged through the fuel gas outlets.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: January 13, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Koji Dan, Yukihiko Kiyohiro