Arrangement Or Process For Reactant Control (e.g., Pressure Or Concentration, Etc.) Patents (Class 429/443)
  • Patent number: 11302944
    Abstract: A method for supplying at least one fuel cell of a fuel cell system of the motor vehicle with fuel includes ascertaining or predicting an indication value which is indicative of the real and/or possible mass flow of the withdrawal of fuel from a pressure-vessel system of the motor vehicle and closing at least one tank shut-off valve when the indication value is equal to or falls below a limiting value.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: April 12, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Andreas Pelger, Stefan Schott
  • Patent number: 11264658
    Abstract: A heat exchanger for cooling multiple rows of battery cells has a plurality of longitudinal flow sections defining at least first and second U-shaped flow areas, each underlying a row of battery cells. The flow sections includes inlet and outlet flow sections, and at least two intermediate flow sections. Inlet and outlet ports are in flow communication with the respective inlet and outlet flow sections, and a first bypass channel extends between the inlet port and at least one of the intermediate flow sections. The first bypass channel supplies relatively cold heat transfer fluid from the inlet to mix with warmer fluid in a second or subsequent U-shaped flow area, to improve temperature uniformity between the rows of battery cells. A second bypass channel may extend around the outer periphery of the heat exchanger, from the inlet flow section to a second or subsequent U-shaped flow area.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: March 1, 2022
    Assignee: Dana Canada Corporation
    Inventors: Garreth D. G. Graves, Sina Kaiser-Krug
  • Patent number: 11251417
    Abstract: Surface conduction in porous media can drastically alter the stability and morphology of electrodeposition at high rates, above the diffusion-limited current. Above the limiting current, surface conduction inhibits growth in the positive membrane and produces irregular dendrites, while it enhances growth and suppresses dendrites behind a deionization shock in the negative membrane. The discovery of uniform growth contradicts quasi-steady “leaky membrane” models, which are in the same universality class as unstable Laplacian growth, and indicates the importance of transient electro-diffusion or electro-osmotic dispersion. Shock electrodeposition could be exploited for high-rate recharging of metal batteries or manufacturing of metal matrix composite coatings.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: February 15, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Peng Bai, Martin Z. Bazant, Fikile R. Brushett, Jihyung Han, Miao Wang
  • Patent number: 11101475
    Abstract: A fuel tank for storing a hydrogen liquid carrier and a spent hydrogen liquid carrier includes a substantially rigid exterior tank wall including a first chamber and a second chamber. The first chamber is fluidly disconnected from the second chamber, and the second chamber includes a dynamically expandable and contractible enclosure, the enclosure being configured to define a dynamic boundary between the hydrogen liquid carrier and spent hydrogen liquid carrier. The fuel tank also includes a first channel in flow communication with one of the first chamber or the second chamber and a second channel in flow communication with another of the first chamber or the second chamber, wherein the first channel and the second channel are flow connected such that a flow through one of the first or second channels is returned to the another of the first or second channels, and that during the flow, the dynamic boundary changes position causing a change in a volume of the second chamber.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: August 24, 2021
    Assignee: ELECTRIQ-GLOBAL ENERGY SOLUTIONS LTD.
    Inventors: Alexander Zilberman, Guy Nevo-Michrowski, Denis Ginzburg
  • Patent number: 10818943
    Abstract: A fuel cell system includes: a turbine including a changing mechanism that adjusts a pressure difference between an upstream pressure and a downstream pressure of the turbine, the turbine recovering at least a part of energy of the cathode off-gas using the pressure difference and assisting driving of the motor with the recovered energy; and a control unit configured to drive the changing mechanism to increase or decrease the recovered energy. The control unit acquires a correlation temperature correlated with a temperature of the cathode off-gas discharged from the turbine and performs freezing avoidance control of not setting the degree of opening to be equal to or less than a predetermined degree of opening when the correlation temperature is lower than a predetermined threshold temperature at which the turbine is able to become frozen.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: October 27, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuichiro Hayase
  • Patent number: 10794962
    Abstract: A system for determining a battery condition includes a temperature sensor configured to provide a temperature value associated with the battery, an impedance sensor configured to provide impedance information associated with the battery, and a controller. The controller is configured to determine a threshold impedance associated with a separator membrane of the battery based on an initial impedance of the separator membrane as measured by the impedance sensor and a battery temperature as measured by the temperature sensor, monitor, during operation of the battery, an actual impedance associated with the separator membrane of the battery based on the impedance information and the battery temperature, permit current flow to and from the battery when actual impedance is greater than the threshold impedance, and prevent current flow to and from the battery when the actual impedance is less than or equal to the threshold impedance.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: October 6, 2020
    Assignee: TOYOTA MOTOR EUROPE
    Inventors: Yuki Katoh, Keita Komiyama
  • Patent number: 10790533
    Abstract: A fuel cell stack (100) includes a first supporting substrate (5a), a first power generation element, a second power generation element, a second supporting substrate (5b) and a communicating member (3). The first supporting substrate (5a) includes a first substrate main portion, a first dense layer, and a first gas flow passage. The first dense layer covers the first substrate main portion. The second supporting substrate (5b) includes a second substrate main portion, a second dense layer, and a second gas flow passage. The second dense layer covers the second substrate main portion. The communicating member (3) extends between a distal end portion (502a) of the first supporting substrate (5a) and a distal end portion (502b) of the second supporting substrate (5b) and communicates between the first gas flow passage and the second gas flow passage.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: September 29, 2020
    Assignee: NGK INSULATORS, LTD.
    Inventors: Makoto Ohmori, Risako Ito, Takashi Ryu
  • Patent number: 10777832
    Abstract: Systems, methods, and devices are provided herein for removing a byproduct of a fuel cell from a vehicle. The vehicle comprises a fuel cell and a venting system. The fuel cell is in communication with a fuel storage container. The fuel is configured to generate electricity and a byproduct, by reacting a first fuel from the fuel storage container with a second fuel through an electrochemical reaction. The venting system is configured to expose the byproduct to forced convection.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: September 15, 2020
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Dayang Zheng, Lei Wang, Wentao Wang, Juncheng Zhan, Bogao Xu
  • Patent number: 10741858
    Abstract: A fuel cell system includes: a fuel cell; a reformer to generate a hydrogen-containing gas; an electric power generation raw material supply unit; a reforming material supply unit configured to supply at least one of reforming water and reforming air, to the reformer; an oxidizing gas supply unit to supply an oxidizing gas to a cathode of the fuel cell; a combustor to ignite an exhaust gas discharged from the fuel cell; and a controller. In an operation stop process of the fuel cell system, the controller causes the oxidizing gas supply unit to supply the oxidizing gas, causes the electric power generation raw material supply unit and the reforming material supply unit to intermittently supply the electric power generation raw material and at least one of the water and the air to the reformer, and causes the ignitor to perform an ignition operation.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 11, 2020
    Assignees: PANASONIC CORPORATION, MORIMURA SOFC TECHNOLOGY CO., LTD.
    Inventors: Shigenori Onuma, Kunihiro Ukai, Hiroshi Shirahama, Takeshi Saito, Yosuke Akagi, Taiichiro Sakamoto, Toshiharu Ooe, Toshiharu Otsuka
  • Patent number: 10714767
    Abstract: Methods, systems, and device for controlling air flow within a vehicle for electrical generation. The air control system includes at least one of an air compressor, a back pressure valve or a bypass valve that controls air flow. The air control system includes one or more components. The air control system includes an electronic control unit. The electronic control unit is configured to obtain an air flow target and an air pressure ratio target and determine that the one or more components will operate outside a safe operating region. The electronic control unit is configured to determine a mediated air flow target and a mediated air pressure ratio target that causes the one or more components to operate within the safe operating region. The electronic control unit is configured to adjust the at least one of the air compressor, the back pressure valve or the bypass valve.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: July 14, 2020
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventor: Jared Farnsworth
  • Patent number: 10647219
    Abstract: A method for controlling a fuel cell system includes steps of: (a) determining whether hydrogen (H2) is detected in an interior space of a stack enclosure in which a fuel cell stack is accommodated; (b) stopping power generation that is performed using the stack when it is determined in step (a) that the hydrogen is detected; (c) opening a purge valve to discharge gases circulating in an anode through the purge valve, and opening a condensate discharge valve to discharge condensate contained in a water trap through the condensate discharge valve; and (d) determining whether the hydrogen discharged through at least one of the purge valve and the condensate discharge valve in step (c) flows back to the interior space based on H2 concentration in the interior space.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: May 12, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Young Shim, Sung Ho Yang, Jae Hun Jang, Hyo Jin Park, Kang Sik Jeon, Young Pin Jin
  • Patent number: 10263265
    Abstract: Oilfield electricity and heat generation systems and methods are provided herein. In an embodiment, an oilfield electricity and heat generation system includes a solid oxide fuel cell and a heat exchanger in thermal communication with the solid oxide fuel cell. The fuel cell includes an anode and a cathode that are electrically separated by a solid oxide membrane. The solid oxide fuel cell is adapted to generate electricity and heat from a hydrocarbon fuel source. The heat exchanger is adapted to repurpose thermal energy from the solid oxide fuel cell to heat a reservoir fluid provided from an oilfield well.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 16, 2019
    Inventors: Timothy Al Andrzejak, Jorge E. Lopez De Cardenas
  • Patent number: 10236526
    Abstract: Disclosed herein are methods and systems that relate to an on-line monitoring of a process/system by controlling rate of oxidation of metal ions at an anode in an anode electrolyte of an electrochemical process and controlling rate of reduction of the metal ions in a catalysis process to achieve steady state.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: March 19, 2019
    Assignee: Calera Corporation
    Inventors: Ryan J. Gilliam, Thomas A. Albrecht, Hong Zhao, Diego Martinez, Rebecca L. King
  • Patent number: 10205183
    Abstract: A device for changing an anode inlet and an anode outlet of a fuel cell stack includes an inlet manifold connected the anode inlet of the fuel cell stack and an outlet manifold connected to the anode outlet. An inlet and outlet changing means is disposed inside one of the inlet manifold and the outlet manifold and controls flow directions of the anode inlet and the anode outlet to be the same or opposite to each other.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 12, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Jong Sung Kim
  • Patent number: 10193175
    Abstract: A process for supplying a fuel cell with reactive species, including a stack of electrochemical cells divided into N different groups, wherein a plurality of steps of selectively supplying the N groups of cells with reactive species are carried out, following each of the supply steps, a step of purging the N groups of cells is carried out.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: January 29, 2019
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Jean-Philippe Poirot-Crouvezier, Didier Buzon, Fabrice Micoud, Remi Vincent
  • Patent number: 10181606
    Abstract: A fuel cell system includes a compressor configured to adjust a flow rate of cathode gas to be supplied to a fuel cell and a pressure regulating valve configured to adjust a pressure of the supplied cathode gas. The fuel cell system further includes a controller programmed to calculate a target pressure of the supplied cathode gas while taking into consideration a load of the fuel cell and a heat protecting requirement of the fuel cell system, calculate a target flow rate of the supplied cathode gas in accordance with the load of the fuel cell and the target pressure of the cathode gas, and control the compressor and the pressure regulating valve in accordance with the target pressure and the target flow rate. The controller is further programmed to increase the target flow rate of the cathode gas as the target pressure of the cathode gas becomes lower.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: January 15, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yosuke Tomita, Hayato Chikugo, Masashi Sato
  • Patent number: 9884567
    Abstract: In a vehicle including a fuel cell system, an electronic control unit is configured to perform first processing in which a rotation speed of an air pump is controlled based on a torque command value and a rotation speed command value, and to perform, in the first processing, at least one of second processing in which the torque command value is set to be larger than the calculated torque command value when at least one of values of an accelerator position, required electric power, and the rotation speed command value or a change rate thereof is increased by a prescribed first value or more, and third processing in which the torque command value is set to be smaller than the calculated torque command value when at least one of the values or the change rate thereof is decreased by a prescribed second value or more.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: February 6, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kohei Oda, Kenji Umayahara, Yuji Kakeno, Mitsuhiro Nada
  • Patent number: 9837692
    Abstract: A power controlling apparatus includes a secondary battery (2) connected to an electrical device (4), and a fuel cell (3) connected to the electrical device (4) and the secondary battery (2). The fuel cell (3) has two non-generating modes including an idling mode and a halt mode, the fuel cell (3) suspending generation of power while being supplied with fuel in the idling mode, the fuel cell (3) stopping generation of power without fuel supply in the halt mode. The power controlling apparatus further includes a remainder estimator (11) to calculate the remaining number of starts representing the remaining number of available starts of the fuel cell (3), and a controller (16) to control the fuel cell (3) to be one of the two non-generating modes during a non-charging mode of the secondary battery (2), based on the remaining number of starts calculated by the remainder estimator (11).
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 5, 2017
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Kazuhito Kawashima, Keisuke Tashiro, Tetsuya Watanabe, Akihito Miyamoto, Ryoji Kato, Chikara Takei
  • Patent number: 9825318
    Abstract: A method for operating a fuel cell system includes detecting a pressure in a fuel supply path located downstream of a pressure reducing valve using a pressure sensor. Whether or not the pressure detected by the pressure sensor exceeds a predetermined threshold pressure is determined. The pressure in the fuel supply path located downstream of the pressure reducing is reduced when the pressure detected by the pressure sensor exceeds the predetermined threshold pressure.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: November 21, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Koichi Kato, Koichi Takaku
  • Patent number: 9774049
    Abstract: A method for controlling starting of a fuel cell vehicle is provided. The method includes measuring a time interval for stopping of a fuel cell and a cell average voltage of the fuel cell when the fuel cell vehicle stops. A starting mode is then switched to a catalyst activating mode when the time interval exceeds a predetermined time or the cell average voltage is greater than a predetermined voltage. The cell average voltage is decreased to be less than the predetermined voltage and the fuel cell is started by supplying air to a cathode of the fuel cell.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: September 26, 2017
    Assignee: Hyundai Motor Company
    Inventors: Dong Jo Oh, Jong Hyun Lee
  • Patent number: 9627693
    Abstract: This disclosure relates to energy storage and generation systems, e.g., combination of flow battery and hydrogen fuel cell, that exhibit operational stability in harsh environments, e.g., both charging and discharging reactions in a regenerative fuel cell in the presence of a halogen ion or a mixture of halogen ions. This disclosure also relates to energy storage and generation systems that are capable of conducting both hydrogen evolution reactions (HERs) and hydrogen oxidation reactions (HORs) in the same system. This disclosure further relates to energy storage and generation systems having low cost, fast response time, and acceptable life and performance.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: April 18, 2017
    Assignee: RAMOT AT TEL-AVIV UNIVERSITY LTD.
    Inventors: Emanuel Peled, Arnon Blum, Adi Aharon, Nina Travitsky, Yaron Konra, Ido Tsamir, Vladimir Zel, Kobby Saadi, Meital Alon, Roy Gorenshtein
  • Patent number: 9608285
    Abstract: The preset invention relates to a solid oxide fuel cell stack capable of producing electricity, in which unit cell modules are connected in series and in parallel, and to a manufacturing method thereof. The solid oxide fuel cell stack is manufactured by: making a unit cell module comprising at least one unit cell formed on the outer surfaces of a flat tubular support, a first electrical interconnector formed on the front end of the support and at least a portion of the outer surfaces so as to be connected to a first electrode of the unit cell, and a second electrical interconnector formed on the rear end of the support and at least a portion of the outer surfaces so as to be connected to a second electrode of the unit cell; and stacking the unit cell modules such that the electrical interconnectors come into contact with each other.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: March 28, 2017
    Assignee: Postech Academy-Industry Foundation
    Inventors: Jong Shik Chung, Hyun-Ki Youn, Bu Ho Kwak, Jung Duk Park
  • Patent number: 9362536
    Abstract: A battery module according to the principles of the present disclosure includes a plurality of battery cells, a pair of sideplates, and a pair of endplates. The sideplates are disposed on opposite sides of the plurality of battery cells and the endplates are disposed at opposite ends of the battery module. The sideplates include a first mating portion and the endplates include a second mating portion that engages the first mating portion to provide an interference fit. The interference fit joins the sideplates and the endplates together and bands the plurality of cells together between the sideplates and the endplates.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 7, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Mark A. Niedzwiecki, Nick Karditsas
  • Patent number: 9350032
    Abstract: Methods and systems for operation of direct methanol fuel cell (DFMC) systems with enhanced flexibility within a wide range of electrical loads as well as no external load are provided. With these methods and systems, the fuel cell operates at low power in a non shut-down state in a fully controlled manner thus allowing the fuel cell to withstand frost conditions and to maintain optimal ancillary battery capacity.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 24, 2016
    Assignee: IRD FUEL CELLS A/S
    Inventors: Visti Andresen, Jacob Lindner Bonde, Joergen S. Lundsgaard, Madeleine Odgaard
  • Patent number: 9112192
    Abstract: The present invention provides geometric arrangements for channels through which liquids or other fluids can be made to flow, for enhanced performance of fuel cells or other chemical or biochemical reactors or analyzers. Systems and methods including these improved geometries are described herein for enhanced performance of a variety of devices. Specifically, in one set of embodiments, the reactors comprise one or more microchannels comprising a tapered cross-sectional area and at least one reactive surface portion. By flowing a liquid comprising one or more reactants through the channel such that the cross-sectional area decreases in a downstream direction, relatively more reactant may be supplied to the wall at downstream positions relative to the amount that would be supplied in a system without a tapered cross-section. In some embodiments, the microchannel may be constructed and arranged such that the amount of reactant supplied to the wall conforms to a predetermined distribution.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: August 18, 2015
    Assignee: Brown University
    Inventors: Tayhas Palmore, Keng Guan Lim
  • Patent number: 9065095
    Abstract: A fuel cell includes a direct liquid fuel cell and a humidifier. The direct liquid fuel cell includes an air intake channel for providing oxidant to the fuel cell and an exhaust channel for exhausting depleted oxidant. The humidifier forms a fluid connection between the air intake channel and the exhaust channel.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: June 23, 2015
    Assignee: INI Power Systems, Inc.
    Inventors: Larry J. Markoski, Dilip Natarajan
  • Patent number: 9034531
    Abstract: The current invention is a fuel cell controller that includes a first control loop, where the first control loop is disposed to adjust a fuel cell current to regulate a hydrogen output pressure from the fuel cell to a pressure target valve, and further includes a second control loop disposed to adjust a hydrogen flow rate from a hydrogen generator to match a DC/DC power output to a power target value.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: May 19, 2015
    Assignee: Ardica Technologies, Inc.
    Inventors: Tibor Fabian, Tobin J. Fisher, Daniel Braithwaite
  • Patent number: 9029035
    Abstract: A fuel cell system includes a cell stack body formed by stacking fuel cells on top of each other, end plates arranged at ends in the cell stacking direction of the cell stack body, and a fluid regulation device mounted in a flow path connected to the cell stack body and regulating conditions of fluid flowing in the flow path. The fluid regulation device is fixed to an end plate only at either of a fluid entrance portion and a fluid exit portion of the fluid regulation device.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: May 12, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Katano, Toshiyuki Inagaki, Nobutaka Teshima
  • Publication number: 20150125764
    Abstract: Flow battery. The battery includes high energy density fluid electrodes having a selected non-Newtonian rheology and structure for providing intermittent flow pulses of controlled volume and duration of the fluid electrodes, the structure adapted to promote interfacial slip to improve flow uniformity. The battery disclosed herein provides a potential solution to large-scale electrical energy storage needs.
    Type: Application
    Filed: October 15, 2014
    Publication date: May 7, 2015
    Applicant: Massachusetts Institute of Technology
    Inventors: Kyle Christopher Smith, W. Craig Carter, Yet-Ming Chiang
  • Patent number: 9017894
    Abstract: A fuel cell is provided with a separator that supports an electrolyte/electrode assembly sandwiched therebetween. The separator is provided with: first and second fuel gas supply parts in the center of which fuel gas supply holes are formed; first and second cross-link parts connected to the first and second fuel gas supply parts; and first and second surrounding support parts connected to the first and second cross-link parts. Each first surrounding support part is provided with a set of fuel gas exhaust passages that discharge fuel gas that has gone through a fuel gas passage and been used. The cross-sectional areas of the fuel gas exhaust passages are larger on the downstream sides than on the upstream sides, in terms of the direction of fuel gas flow.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: April 28, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tetsuya Ogawa, Yukihiko Kiyohiro, Koji Dan, Yuki Yoshimine
  • Patent number: 9020799
    Abstract: A method a system and method for optimizing the power distribution between a fuel cell stack and a high voltage battery in a fuel cell vehicle. The method includes defining a virtual battery hydrogen power for the battery that is based on a relationship between a battery power request from the battery and an efficiency of the battery and defining a virtual stack hydrogen power for the fuel cell stack that is based on a relationship between a stack power request from the fuel cell stack and an efficiency of the fuel cell stack. The virtual battery hydrogen power and the virtual stack hydrogen power are converted into polynomial equations and added together to provide a combined power polynomial equation. The combined power polynomial equation is solved to determine a minimum of the fuel cell stack power request by setting a derivative of the virtual stack hydrogen power to zero.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Oliver Maier
  • Patent number: 9017891
    Abstract: The present invention relates to a hydrogen fed power system comprising: a high-pressure hydrogen container (150), at least one hydrogen driven energy converter such as a fuel cell (159) connecting to the hydrogen container (150), pressure converter (158) for hydrogen gas, located between the high-pressure hydrogen container (150) and the lower pressure energy converter (159). The invention also relates to a vehicle as well as to a stand-alone electric power unit provided with such an hydrogen fed power system. Furthermore the present invention relates a method for use of the hydrogen fed power system and to a method for filling up the high-pressure hydrogen container of the hydrogen fed power system.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: April 28, 2015
    Assignee: HyET Holding B.V.
    Inventor: Marleen Middelman-Koornneef
  • Patent number: 9017886
    Abstract: A fuel cell system is disclosed with a fuel cell stack having a plurality of fuel cells, the fuel cell stack including an anode supply manifold and an anode exhaust manifold, a sensor for measuring at least one of an environmental condition affecting the fuel cell stack and a characteristic of the fuel cell stack, wherein the sensor generates a sensor signal representing the measurement of the sensor; and a processor for receiving the sensor signal, analyzing the sensor signal, and controlling a flow rate of a fluid flowing into the anode supply manifold based upon the analysis of the sensor signal.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Daniel I. Harris, Joseph Nicholas Lovria, Patrick Frost
  • Patent number: 9017885
    Abstract: The object of this invention is to provide a fuel supply system capable of reducing the quantity of a fuel to be discharged from a plurality of fuel tanks connected in parallel is provided. The fuel supply system includes a plurality of the fuel tanks for storing a fuel, on-off valves provided individually for the fuel tanks, and a control unit which controls the opening and closing of the on-off valves. The control unit changes the number of the on-off valves to be simultaneously opened according to a situation. The control unit may reduce the number of the on-off valves to be simultaneously opened after a failure is detected or at the time of maintenance of the fuel supply system.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Naoki Kanie
  • Patent number: 9012100
    Abstract: Provided is a fuel cell system including: a wetness detecting section for detecting a wetness of a fuel cell stack; a target SR setting section for setting a target SR of the fuel cell stack based on the wetness; a smallest SR setting section for setting, based on a load, a smallest SR necessary to prevent flooding of the fuel cell stack; and an SR control section for performing control so that an actual SR becomes temporarily larger than the smallest SR when the target SR is smaller than the smallest SR.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: April 21, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Fumio Kagami, Takahiro Fujii
  • Patent number: 8993196
    Abstract: In a fuel cell system including a fuel cartridge and a fuel supply module, the fuel cartridge includes at least two ports, wherein a first port from among the at least two ports is a fuel inlet port and a second port from among the at least two ports is a fuel outlet port. The fuel cartridge may also include a fuel pouch or the fuel cartridge itself may be the fuel pouch. The fuel supply module may include a fuel circulation structure that circulates the fuel before the fuel is supplied to the stack. The fuel cell system may be equipped with an electronic apparatus and serve as a source of power.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: March 31, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-soo Joung, Hye-jung Cho, Sang-ho Yoon
  • Patent number: 8993187
    Abstract: A method of and fuel cell system for limiting an amount of a fuel crossing over a membrane in a fuel cell, the method including determining an appropriate molecular ratio of the fuel and water for a fuel-water mixture 503; and controlling an amount of the fuel-water mixture that is available to an anode side of the membrane 507 in the fuel cell according to an amount of the fuel that will be electro-oxidized by the fuel cell. The fuel cell system includes a fuel cell membrane 103 having an anode layer 107, a cathode layer 109, and an electrolyte layer 111 where the cathode layer is exposed to an oxygen source, and a fuel delivery system 105 including a fuel chamber 119 disposed around and proximate to the anode layer at a side opposite to the electrolyte layer, the fuel delivery system implementing the method above.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: March 31, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Ronald James Kelley, Steven Duane Pratt, Sivakumar Muthuswamy, Robert Pennisi
  • Patent number: 8993184
    Abstract: A fuel cell system is provided that includes a fuel cell stack, an air pump, a first convertor, a motor, and an ECU for controlling the air pump and the first convertor based on the target voltage and the switching voltage of the single cell. The ECU executes the first mode such that the actual voltage of the single cell corresponds to the target voltage, when the target voltage is equal to or less than the switching voltage, while the ECU executes the second mode such that the actual voltage of the single cell is kept at the switching voltage, when the target voltage is more than the switching voltage. Further, the ECU executes the second mode thereby to change the actual current of the single cell.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: March 31, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shuichi Kazuno, Hibiki Saeki
  • Patent number: 8986901
    Abstract: A fuel cell system includes an air supply flow path configured to supply the air to a fuel cell, a reed valve provided in the air supply flow path, an air exhaust flow path configured to allow the air discharged from the fuel cell to flow therethrough, a pressure regulating valve provided in the air exhaust flow path and configured to adjust back pressure of the air supplied to the fuel cell, a bypass flow path configured to connect an upstream section of the air supply flow path upstream of the reed valve with the air exhaust flow path, and a bypass valve provided in the bypass flow path and configured to open and close the bypass flow path. The fuel cell system reduces the opening of the pressure regulating valve with supplying the air to the fuel cell in the closed position of the bypass valve, so as to increase the pressure of the air upstream of the pressure regulating valve, and subsequently opens the bypass valve.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: March 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Koji Katano
  • Patent number: 8980496
    Abstract: A solid oxide fuel cell is provided with which the further advance of degradation can be restrained relative to fuel cell units in which degradation has advanced. The present invention is a solid oxide fuel cell system which varies output power in response to a required generation amount. The system comprises a fuel cell module furnished with multiple fuel cell units, a fuel supply device for supplying fuel to the fuel cell module, an oxidant gas supply device for supplying oxidant gas to the fuel cell module, and a controller for changing the amount of fuel supplied from the fuel supply means in response to the required generation amount. The controller reduces the rate of change in the fuel supply amount per unit time when the required generation amount changes subsequent to an estimate or determination that the fuel cell module has degraded.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 17, 2015
    Assignee: Toto Ltd.
    Inventors: Toshiharu Ooe, Katsuhisa Tsuchiya, Kiyotaka Nakano, Tsukasa Shigezumi, Yoshiyuki Kawamura
  • Patent number: 8968954
    Abstract: A target value of each of factors in a fuel cell system is determined based on a correspondence relationship of a change in each of the factors determining reaction conditions of fuel in a fuel cell to a change in an external environment of the fuel cell system, and peripheral devices of the fuel cell affecting the reaction conditions of the fuel in the fuel cell are controlled according to a target value of each of the factors.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: March 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin S. Heo, Hye-jung Cho, Young-jae Kim, Jong-rock Choi
  • Patent number: 8968955
    Abstract: A method of operating a fuel cell system includes characterizing the fuel or fuels being provided into the fuel cell system, characterizing the oxidizing gas or gases being provided into the fuel cell system, and calculating at least one of the steam:carbon ratio, fuel utilization and oxidizing gas utilization based on the step of characterization.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 3, 2015
    Assignee: Bloom Energy Corporation
    Inventors: David Weingaertner, Arne Ballantine, Swaminathan Venkataraman
  • Patent number: 8968953
    Abstract: A solid oxide fuel cell capable of maintaining performance over a long time period by appropriately changing fuel cell module operating conditions. The present invention is a solid oxide fuel cell (1), having a fuel cell module (2), a fuel supply device (38), an oxidant gas supply device (45), and a controller (110) for controlling the amount of fuel supplied from the fuel supply device; the controller is furnished with a degradation determining circuit (110a) for determining degradation in the fuel cell module and a degradation response circuit (110b) for changing fuel cell module operating conditions based on the degradation determination by the degradation determining circuit; the degradation determination stores fuel cell module operating results arising from the operating conditions changed by the degradation response circuit, and executes further degradation determination based on the stored operating results.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 3, 2015
    Assignee: Toto Ltd.
    Inventors: Tsukasa Shigezumi, Toshiharu Ooe, Katsuhisa Tsuchiya, Kiyotaka Nakano, Yoshiyuki Kawamura
  • Patent number: 8962206
    Abstract: Methods and systems for operating a fuel cell stack having a fuel exhaust stream and a vessel downstream of the fuel cell stack fluidly connected to the fuel exhaust stream are provided. In one embodiment, the method comprises displacing substantially all residual gas in the vessel by providing at least a portion of the fuel exhaust stream to the vessel, and isolating the vessel from the fuel cell stack after the fuel exhaust stream displaces substantially all residual gas in the vessel. At least one bleed down characteristic is determined as fuel exhaust within the vessel is released through an orifice, and an operating condition of the fuel cell stack is set or determined based on the at least one bleed down characteristic. In a specific embodiment, the hydrogen concentration in the fuel exhaust is determined based on the at least one bleed down characteristic.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: February 24, 2015
    Assignee: Daimler AG
    Inventor: Rainer W. Schmidt
  • Patent number: 8962204
    Abstract: A fuel cell stack includes a heat exchange unit that performs heat exchange between a gas mixture containing source hydrogen and a circulating gas and cooling water used for controlling the temperature of the fuel cell stack. A system controller adjusts the temperature of the cooling water by controlling a temperature control unit on the basis of the temperature of source hydrogen flowing into a junction at which the source hydrogen and a circulating gas are mixed such that the temperature of a source/recirculated hydrogen mixture that is mixed at the junction and that is supplied to the fuel cell stack is kept within a managed temperature range.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: February 24, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Yonekura, Masatoshi Iio, Hisashi Niioka, Takatada Usami, Hayato Chikugo, Mitsunori Kumada, Naoto Todoroki, Ikuhiro Taniguchi, Yoshinao Ootake, Hitoshi Igarashi
  • Patent number: 8962207
    Abstract: A gas detection system functions to detect a specific gas present in a certain space. The gas detection system includes a gas concentration detector arranged to detect concentration of the specific gas as a gas concentration. The gas detection system also has a determination module configured to determine whether the gas concentration detected by the gas concentration detector exceeds a set threshold value. In response to input of a checking instruction for checking up the gas concentration detector into the determination module, the determination module uses a threshold value for checkup purpose, in place of the set threshold value. This arrangement effectively enhances the convenience in the process of checking up the gas concentration detector.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: February 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeto Kajiwara, Katsuki Ishigaki
  • 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: 8951688
    Abstract: A method of using a proton exchange membrane fuel cell, composed of a polymer membrane and electrodes present on either side of the membrane, includes at least one step of reversing the functioning of the cell during use.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 10, 2015
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Alejandro Franco, Olivier Lemaire
  • Patent number: 8932777
    Abstract: Disclosed herein is a fuel supply comprising a compressed gas chamber and liquid fuel chamber. A pressure regulator connects the compressed gas chamber to the liquid fuel chamber. The pressure regulator is capable of taking a high pressure input from the compressed gas chamber and providing a substantially constant lower output pressure to the liquid fuel chamber. The pressure of the compressed gas chamber can decrease over time, but the pressure that urges liquid fuel out of the liquid fuel chamber remains substantially at the same level.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: January 13, 2015
    Assignee: Société BIC
    Inventors: Andrew J. Curello, Paul Spahr
  • Patent number: 8927175
    Abstract: A pump has a shaft, an impeller arranged on the shaft, and a labyrinth seal which is arranged between stationary and moving parts of the pump. A plurality of blades are arranged on the rotor and a labyrinth seal extends at least between the shaft and a rear portion of the blades. A gap in the labyrinth seal is designed such that liquid water can be actively carried away, with the labyrinth seal for this purpose being designed at least in places with a channel in the form of a spiral and/or a staircase. The invention also relates to a fuel cell system having such a pump.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: January 6, 2015
    Assignee: Daimler AG
    Inventors: Oliver Harr, Andreas Knoop, Cosimo S. Mazzotta, Patrick L. Padgett, Hans-Joerg Schabel, Klaus Scherrbacher