Including Measurement Of Electrical Output Patents (Class 429/430)
  • Patent number: 11171381
    Abstract: A cell pack includes a plurality of unit cells arranged in an arrangement direction and a restraint mechanism for restraining these unit cells. The restraint mechanism includes: a first end plate portion disposed at an end portion in a first direction of the arrangement direction of the plurality of unit cells; a second end plate portion disposed at an end portion in a second direction of the arrangement direction of the plurality of unit cells; and a ring-shaped restraining hoop portion A dimension in the arrangement direction between the first end plate portion and the second end plate portion of the restraining hoop portion is set such that a predetermined restraining pressure is applied in a direction of compressing the plurality of unit cells along the arrangement direction. A method for assembling the cell pack is also provided.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Seigo Fujishima, Masayuki Kitaura
  • Patent number: 11152634
    Abstract: A method of controlling voltage of a fuel cell includes steps of: determining whether a mode is a high-voltage avoidance mode of the fuel cell; controlling a fuel cell stack voltage to be at a predetermined reference value or less when the mode is the high-voltage avoidance mode of the fuel cell; monitoring individual cell voltages of the fuel cell and determining whether a maximum value of the monitored individual cell voltages exceeds a predetermined individual value; reducing a reference value of the fuel cell stack voltage when the maximum value of the monitored individual cell voltages exceed the predetermined individual value; and controlling the fuel cell stack voltage at the reduced reference value or less. The method and system for controlling fuel cell voltage is provided to secure durability and performance of individual cells of a fuel cell stack.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: October 19, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Gun Hyung Park, Dae Jong Kim, Seung Yoon Lee
  • Patent number: 11145883
    Abstract: A fuel cell system includes: a first fuel cell; a second fuel cell having a greater maximum power output than the first fuel cell; and a controller configured to cause the first fuel cell to generate greater electric power greater than the second fuel cell when the requested power is smaller than a first threshold, cause the second fuel cell to generate greater electric power than the first fuel cell when the requested power is a second threshold, which is the first threshold or greater and smaller than a third threshold that is greater than the second threshold, is 70% of the maximum power output of the second fuel cell or grater, and is 100% of the maximum power output of the second fuel cell or smaller, and cause both the first and second fuel cells to generate electric power when the requested power is the third threshold or greater.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: October 12, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masayuki Ito
  • Patent number: 11139490
    Abstract: A fuel cell system includes: a secondary battery; first and second fuel cells; first and second scavenging devices configured to scavenge the first and second fuel cells, respectively; and a control device configured to perform a first scavenging process of scavenging the first fuel cell by driving the first scavenging device using a charged power of the secondary battery when the first and second fuel cells are in a power generation stopped state and to perform a second scavenging process of scavenging the second fuel cell by driving the second scavenging device using a generated power of the first fuel cell when the first fuel cell is in a power generation state and the second fuel cell is in the power generation stopped state.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: October 5, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideyuki Kumei, Masayuki Ito, Tomohiko Kaneko
  • Patent number: 10998565
    Abstract: A coolant temperature control system for a fuel cell stack in a vehicle includes a controller for determining a real time target exit temperature of a fuel cell stack coolant and a communicating device for detecting a fuel cell voltage and a fuel cell current outputted from the fuel cell stack. The real time target exit temperature of the fuel cell stack coolant is determined by an input fuel cell heat to fuel cell power ratio generated from the fuel cell stack for compensating the target exit temperature due to degradation of the fuel cell stack over time. In addition, the coolant temperature control system determines to activate for evaluating the real time target exit temperature of the fuel cell stack coolant when a trip distance of the vehicle is greater than a predetermined travel distance.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: May 4, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Kevin Lee
  • Patent number: 10985396
    Abstract: A fuel cell stack is provided and includes a fuel cell assembly in which a plurality of fuel cells are stacked between upper and lower current collectors. The fuel cell stack includes an enclosure that pressurizes and seals the fuel cell assembly in a stacked direction of the fuel cells.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: April 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Suk Min Baeck, Young Bum Kum, Kwi Seong Jeong
  • Patent number: 10980116
    Abstract: A matrix of battery cell modules includes a flexible printed circuit board assembly (PCBA) for a conformal wearable battery (CWB) with a plurality of attachment sections for each of a plurality of battery cells that are arranged in a grid-like pattern on a same side of the flexible PCBA. Each battery cell may be joined with a flexible PCB via a welding process. The flexible PCBA is configured to fold along a bend axis so that the flexible PCBA is folded approximately in half. When affixed to the flexible PCBA, the plurality of battery cell modules and a circuitry module form a grid of physical components. When folded, the flexible PCBA forms a three-dimensional grid of physical components comprising at least the battery cell modules.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: April 13, 2021
    Assignee: Inventus Power, Inc.
    Inventors: Ilyas Ayub, William Mark Batts, Timothy James Vallaro, Elijah Brett Goldin, Anvin Joe Manadan
  • Patent number: 10927774
    Abstract: An engine controller to control a plurality of engines is disclosed. The engine controller may identify a plurality of engines configured to provide power to a load, wherein the plurality of engines have a first set of priorities associated with providing the power to the load; receive a plurality of parameters from a plurality of monitoring devices monitoring the plurality of engines; calculate a plurality of metrics corresponding to the plurality of engines based on the plurality of parameters; determine, based on the plurality of metrics, that a switching condition is satisfied to switch from the first set of priorities to a second set of priorities for the plurality of engines; determine the second set of priorities for the plurality of engines based on the plurality of metrics; and cause the plurality of engines to provide respective amounts of power to the load based on the second set of priorities.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 23, 2021
    Assignee: Caterpillar Inc.
    Inventors: Zhijun Cai, Ronald Gayles, Yanchai Zhang, Stephen Nofsinger, Maurice Dust
  • Patent number: 10930945
    Abstract: A fuel cell system and a control method thereof are provided. The control method includes acquiring a first pressure that corresponds to a pressure in an anode immediately before starting and determining a hydrogen supply target differential pressure value that corresponds to a pressure value boosted in the anode by hydrogen supplied to the anode when starting the system, based on an intensity of the acquired first pressure acquired. An opening degree of a hydrogen supply valve connected to the anode is then adjusted to supply sufficient hydrogen to boost the pressure in the anode that corresponds to the hydrogen supply target differential pressure value.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: February 23, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyun Jae Lee, Dae Jong Kim
  • Patent number: 10916787
    Abstract: A fuel cell system includes a water supply unit configured to supply water from a first water storage unit to a second water storage unit, and a water usage unit uses water in the second water storage unit. The first and second water storage units store produced water form the fuel cell. When the amount of water stored in the first water storage unit exceeds a first predetermined value and the amount of water stored in the second water storage unit is smaller than a second predetermined value, water is supplied from the first water storage unit to the second water storage unit. When water is being used by the water usage unit, water is supplied from the first water storage unit to the second water storage unit even when the amount of water stored in the second water storage unit is not smaller than the second predetermined value.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: February 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Sakajo, Takashi Koyama, Ryo Yoshioka, Takahiro Yamafuji
  • Patent number: 10914233
    Abstract: In a power generation system, exhausted fuel gas exhausted from a solid oxide fuel cell (SOFC) is used as a fuel of a first combustor or a second combustor of a gas turbine, and at the same time, a part of compressed air compressed by a compressor of the gas turbine is used to drive the SOFC. The gas turbine includes the first combustor for burning fuel gas which is different from the exhausted fuel gas, a first turbine configured to be driven by combustion gas supplied from the first combustor, the second combustor for burning at least a part of the exhausted fuel gas, and a second turbine coupled with the first turbine and configured to be driven by combustion gas supplied from the second combustor.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: February 9, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: So Manabe, Kentaro Fujii
  • Patent number: 10910661
    Abstract: Disclosed are a method of manufacturing a membrane electrode assembly for a fuel cell and a membrane electrode assembly for a fuel cell manufactured using the same. The planar membrane electrode assembly for a fuel cell may include an ionomer membrane formed on both side surfaces of an electrode and between the electrode and an electrolyte membrane, thereby increasing interfacial bonding force between the electrode and the electrolyte membrane and improving the durability of a cell. In addition, the membrane electrode assembly may include planar or smooth surfaces such that formation of voids or surface steps between the electrode and a sub-gasket may be prevented, thereby improving airtightness and preventing deterioration attributable to concentration of pressure.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 2, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Min Jin Kim, Woo Jin Lee, Yong Min Kim
  • Patent number: 10897152
    Abstract: Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: January 19, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Minoru Takahashi, Junpei Momo, Yutaka Shionoiri
  • Patent number: 10892508
    Abstract: A fuel cell unit includes a fuel cell stack having a stacked plurality of single cells; a stack case housing the fuel cell stack; a component case having an opening dosed by a wall of the stack case that is parallel to a stacking direction of the single cells; and a high-voltage component which is housed inside the component case and fixed to at least one of an opposite wall and an extending wall of the component case, on a surface of that wall facing the inside of the component case, and to which electricity generated in the fuel cell stack is supplied. The opposite wall faces the opening. The extending wall extends from the opposite wall toward the stack case.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: January 12, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Katano, Hiroyuki Sekine
  • Patent number: 10844501
    Abstract: Electrocatalysts composed of single atoms dispersed over porous carbon support were prepared by a lithium-melt method. The new catalysts demonstrated high selectivity, high Faradic efficiency and low overpotential toward to the electrocatalytic reduction of carbon dioxide to fuels.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: November 24, 2020
    Assignees: UChicago Argonne, LLC, Board of Trustees of Northern Illinois University
    Inventors: Di-Jia Liu, Tao Xu, Dominic Rebollar, Haiping Xu
  • Patent number: 10794250
    Abstract: An electrochemical reactor 70 is provided with a proton conductive solid electrolyte layer 75; an anode layer 76 arranged on the surface of the solid electrolyte layer and able to hold water molecules; a cathode layer 77 arranged on the surface of the solid electrolyte layer; and a current control device 73 controlling a current flowing through the anode layer and the cathode layer. The current control device reduces the current flowing through the anode layer and the cathode layer, when the water molecules held in the anode layer become smaller in amount.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: October 6, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Sakuma, Keishi Takada, Hiromasa Nishioka
  • Patent number: 10741857
    Abstract: A fuel cell system includes a fuel cell, a water storage unit configured to store water recovered from the fuel cell and be able to drain the stored water, a water usage unit configured to use the water in the water storage unit, and a control unit configured to control a drain of the water from the water storage unit. The control unit is configured to, when a first predetermined time has elapsed since a last drain of the water from the water storage unit, drain the water from the water storage unit. The control unit is configured to, when it is predicted that the water in the water storage unit is used by the water usage unit within a second predetermined time shorter than the first predetermined time, not drain the water from the water storage unit even when the first predetermined time has elapsed since the drain of the water from the water storage unit.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 11, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Sakajo, Takashi Koyama, Ryo Yoshioka, Takahiro Yamafuji
  • Patent number: 10727512
    Abstract: A device for monitoring electricity generation comprising: an acquirer that acquires a total value of cell voltage from multiple cells including fuel cells; an increaser that increases the anode gas now rate to the multiple cells when the total value shows a possibility of negative voltage occurring in some of the multiple cells; and a judger that judges if negative voltage occurred in some of the multiple cells based on the total value following the increase of the anode gas flow rate.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 28, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Shiokawa, Tetsuya Bono, Osamu Hamanoi
  • Patent number: 10720618
    Abstract: The disclosure relates to an end plate and a battery module. The end plate comprises an end plate body, which has an inner surface and an outer surface that are opposed in a thickness direction of the end plate body, the outer surface is engaged with a fixing band for the battery module; and a limiting assembly, which is disposed on the outer surface, the limiting assembly includes a fixed clamping member and a movable clamping member which are spaced apart from each other in a height direction of the end plate body and are used in cooperation with each other. A clamping space is formed between the fixed clamping member and the movable clamping member. The movable clamping member can make room for the fixing band so that the fixing band enters the clamping space by the movable clamping member and is limited within the clamping space.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: July 21, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chao Long, Huabin Zou, Derong Wang, Linggang Zhou, Cong Bao
  • Patent number: 10714783
    Abstract: A system includes a first plurality of fuel cell stacks configured to generate a first portion of an electric potential and a second plurality of fuel cell stacks configured to generate a second portion of the electric potential. The system includes a positive electrical bus bar conductively coupled with the first plurality of fuel cell stacks and configured to power an electrical load using the generated electric potential. The system includes a negative electrical bus bar conductively coupled with the second plurality of fuel cell stacks and configured to electrical load using the generated electric potential. The positive electrical bus bar is elongated and extends between the first plurality of fuel cell stacks and the negative electrical bus bar is elongated and extends between the second plurality of fuel cell stacks.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 14, 2020
    Assignee: CUMMINS ENTERPRISE LLC
    Inventors: Darren Bawden Hickey, Irfan Saif Hussaini, Andrew Philip Shapiro, Keith Garrette Brown
  • Patent number: 10693161
    Abstract: There is provided a fuel cell system having a fuel cell, which determines whether an operating state thereof is a low-temperature-startup operation or a normal-running operation and performs recovery control for increasing a concentration gradient of water in an electrolyte membrane of the fuel cell to be greater than that in the normal-running operation when it is determined that the operating state is the low-temperature-startup operation.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 23, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Fumio Kagami
  • Patent number: 10630093
    Abstract: A method for optimizing the architecture of the power supply of a load, includes the following steps: determination of a mission profile (16) sizing according to the power required by the load over time; definition of the sources of energy storage for hybridization; association of a characteristic behavior model with each source of energy storage; determination of the couples of sources of energy storage that can generate the mission profile with a minimum mass; and determination, from the potential couples of sources of energy storage, of the couple with the weakest mass.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: April 21, 2020
    Assignees: AIRBUS GROUP SAS, AIRBUS DEFENCE AND SPACE SAS, AIRBUS HELICOPTERS
    Inventors: Benoit Fleury, Gregor Massiot, Pierre-Bertrand Lancelevee, Julien Labbe
  • Patent number: 10629929
    Abstract: A test cell configured to qualify an apparatus for characterizing cells of at least one fuel cell and a method for producing such a test cell. The test cell includes a first and a second contact face respectively including a first and a second contact area entirely or partially occupying a surface of the corresponding contact face, the first and second contact faces together delimiting an interior volume. The test cell further includes an equivalent passive circuit configured to have an equivalent impedance to at least one cell of a fuel cell, the equivalent circuit including a first and a second output terminal respectively connected to the first and second contact areas, the equivalent circuit being housed in the interior volume.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 21, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Julien Vulliet
  • Patent number: 10615437
    Abstract: A fuel cell system including: a fuel cell; a voltage sensor that measures output voltage of the fuel cell; a converter that boosts the output voltage; and a control unit that controls the converter using a duty ratio including a feedforward term and a feedback term, the feedforward term being set to perform feedforward control, the feedback term being set to perform feedback control, wherein when the control unit causes the converter to boost the output voltage, and when the feedforward term calculated by specified Expression I exceeds an upper limit calculated by specified Expression II, the control unit causes the converter to boost the voltage output from the fuel cell with the duty ratio including the upper limit and the feedback term.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: April 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yutaka Tano, Shinji Aso, Yuji Kakeno
  • Patent number: 10593973
    Abstract: A fuel cell system incorporated in a vehicle includes a fuel cell that uses a reaction gas to generate electric power and a controller. When output restriction that restricts the electric power output by the fuel cell is performed, (a) the controller does not store a content of the performed output restriction as a history in a case where a throttle opening of a throttle is smaller than an opening threshold or an output request is smaller than an output threshold, the output request being issued to the fuel cell and set in accordance with the throttle opening, and (b) the controller stores the content of the performed output restriction as a history in a case where a condition specified in advance is satisfied while the throttle opening is greater than the opening threshold and the output request is greater than the output threshold.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: March 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiromu Saito
  • Patent number: 10547041
    Abstract: A battery pack includes a grouping of battery cells and a plurality of array frames for retaining the grouping of battery cells. Each of the plurality of array frames includes a ratchet feature. A column bolt includes a raised surface configured to mate with the ratchet feature of each of the plurality of array frames to secure the plurality of array frames together.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 28, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Rajaram Subramanian, Saravanan Paramasivam, Mladen Marjanovic, Kimberley King, Steve Droste
  • Patent number: 10529999
    Abstract: A power supply apparatus, a power supply system, and a power supply method increase the power generation efficiency of the system overall in a system that includes a plurality of power source units. A power supply apparatus operates distributed power sources in parallel, the distributed power sources including power source units, and supplies output power from the distributed power sources to a load. The power supply apparatus includes a controller that controls each power source unit so that output power from whichever of the power source units has higher power generation efficiency is prioritized to increase.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: January 7, 2020
    Assignee: KYOCERA Corporation
    Inventor: Yuki Suzuki
  • Patent number: 10449859
    Abstract: The invention relates to a fuel cell vehicle (200), in which the driver has more influence on the consumption and the dynamic of the vehicle (200). This is achieved by the fuel cell vehicle (200) comprising at least one sensor for detecting a first driver input and a control unit (60). The control unit (60) is configured to operate the fuel cell vehicle (200) in one of a plurality of operating modes depending on the first driver input, wherein a power consumption PAC of the air-conditioning system (70), an operating range of the fuel cell stack (10), and a transfer function for determining the power demand PEM from the second driver input are varied depending on the selected operating mode. It is provided that the driver has at least five different operating modes available, which differ in particular with respect to the available driving dynamic, the fuel consumption, and the adjustable comfort.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 22, 2019
    Assignees: VOLKSWAGEN AG, AUDI AG
    Inventors: Nils Brandau, Christian Schröder
  • Patent number: 10396377
    Abstract: A fuel cell device according to the present invention includes a controller. The controller is configured to allow a fuel gas supply device and an oxygen-containing gas supply device to supply the fuel gas and the oxygen-containing gas supplied to fuel cells (19) in a supply amount less than a supply amount to be set in accordance with a decreased power as required by the external load as well as to cause an igniter to start operation if the power required by the external load decreases and flameout of the combustion in a combustor (45) is recognized.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 27, 2019
    Assignee: KYOCERA Corporation
    Inventors: Naoki Kawabata, Nobuhiko Hachiki
  • Patent number: 10388973
    Abstract: A fuel cell stack diagnostic system is provided. The system includes a fuel cell stack having a plurality of cell channels and a diagnostic analyzer that performs a voltage measurement on each of the plurality of cell channels. The diagnostic analyzer determines that the voltage measurement is abnormal as a first level when a voltage ratio is less than a first reference voltage ratio when starting a vehicle in which the fuel cell stack diagnostic system is mounted. Additionally, the voltage ratio is a ratio of a minimum cell channel voltage to an average cell channel voltage.
    Type: Grant
    Filed: July 3, 2016
    Date of Patent: August 20, 2019
    Assignee: Hyundai Motor Company
    Inventor: Kang Sik Jeon
  • Patent number: 10298056
    Abstract: A power control system includes an acquisition unit that acquires information indicating the amount of power demand that is used by a consumer according to predetermined information that prompts adjustment of the power demand, and a control unit that controls a predetermined apparatus in accordance with a target demand amount and the information indicating the power demand amount.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 21, 2019
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hitoshi Yano, Ryo Hashimoto, Hisato Sakuma
  • Patent number: 10283784
    Abstract: A fuel cell including: a diaphragm/electrodes assembly including a first electrode forming an anode, and a first reinforcement attached to a surface of the diaphragm and surrounding the first electrode; two bipolar plates, having the diaphragm/electrodes assembly placed therebetween and including at least one flow collector passing therethrough, a first surface of the diaphragm including an active area and a connection area and arranged between the flow collector and the active area; a conductor track rigidly connected to the first surface of the diaphragm and extending between the connection area and one edge of the diaphragm that projects beyond the first reinforcement; and a measurement electrode, positioned on the connection area of the first surface of the diaphragm and making electrical contact with the conductor track.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: May 7, 2019
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Remi Vincent, Sebastien Rosini, Denis Tremblay
  • Patent number: 10222770
    Abstract: An output module comprises two management units each of which calculates the current demand for the module independently from one another. One management unit controls an output current, controller whilst the other unit monitors the current produced by the output current controller against an independently calculated demand. The output module has multiple output modules. In normal operation, each module provides a portion of the required output current, the total output current being equal to the sum of the currents output by each module. in the event of failure on one of the, modules, the other module or modules switch to providing the total current required and the failed module is switched to a fail safe mode by using an isolation circuit to switch off the output current from that module.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: March 5, 2019
    Assignee: Rockwell Automation Limited
    Inventors: Thomas B. Meagher, Gerald R. Creech, Philip J. Agar, Shelby A. Murrell, Ian David D. W. Jones
  • Patent number: 10164275
    Abstract: A fuel cell system includes: a wetness target value calculating unit configured to calculate a target value of a wet state of the fuel cell; a gas required flow rate calculating unit configured to calculate a cathode gas required flow rate on the basis of a power generation request to the fuel cell; a wetness-control anode gas flow rate calculating unit configured to calculate a wetness-control anode gas circulation flow rate at least on the basis of the wetness target value and the cathode gas required flow rate during a dry control; an anode gas flow rate control unit configured to control an anode gas circulation flow rate on the basis of the wetness-control anode gas circulation flow rate; a wetness-control cathode gas flow rate calculating unit configured to calculate a wetness-control cathode gas flow rate at least on the basis of the wetness target value and a measured value or estimated value of the anode gas circulation flow rate during the dry control; and a cathode gas flow rate control unit config
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: December 25, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tetsuya Aoki, Takahiro Kaito, Takahiro Fujii
  • Patent number: 10115990
    Abstract: A fuel cell system installed in a vehicle includes a fuel cell that supplies power to a motor that drives the vehicle, a pump that supplies oxygen to the fuel cell, an accelerator position detector that detects an accelerator depression amount of the vehicle, and a controller that calculates required generated power of the fuel cell and required driving power of the pump, based on the accelerator depression amount. When a preset condition of causing a sharp drop in the calculated required generated power is satisfied, the controller calculates the required driving power in such a manner that a drop rate of the required driving power becomes higher than a drop rate of the calculated required generated power, sets a lower limit to the calculated required driving power, and drives the pump in accordance with the lower limit when the required driving power is lower than the lower limit.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: October 30, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Kakeno, Kenji Umayahara, Mitsuhiro Nada
  • Patent number: 10038330
    Abstract: Method for controlling the battery capacity of a secondary battery in a battery-driven household electrical appliance and a respective household electrical appliance are described, wherein the battery-driven household electrical appliance has an electrical load and a control means adapted to control the operation of the household electrical appliance and to monitor the capacity of the secondary battery, said method comprising the following steps: recognizing a situation of storage of the household electrical appliance in which the household electrical appliance is not in use; determining the current capacity of the secondary battery; comparing the current capacity of the secondary battery with a desired storage capacity for the electrical household appliance; activating an energy-consuming load in the electrical household appliance if the current capacity of the secondary battery is higher than the desired storage capacity until the current capacity is equal to the desired storage capacity; activating an e
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: July 31, 2018
    Assignee: Braun GMBH
    Inventors: Torsten Klemm, Jan Christian Langsdorf, Gerd Laschinski, Hartmut Loth-Krausser, Christof Ungemach
  • Patent number: 10033055
    Abstract: One aspect of the present disclosure is directed to a fuel cell power system. The system may include one or more fuel cells configured to generate electric power and a compressor configured to supply compressed air to the one or more fuel cells. The system may further include one or more sensors. The sensors may be configured to generate a signal indicative of at least one measured parameter of air flow across the one or more fuel cells. The system may also include a controller in communication with the one or more fuel cells, the compressor, and the sensors. The controller may be configured to determine a desired pressure drop based on at least one calculated parameter, determine a control command for the compressor based on the desired pressure drop, and adjust the control command based on a feedback gain parameter and a feed forward gain parameter.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: July 24, 2018
    Assignee: Nuvera Fuel Cells, LLC
    Inventors: Marco Cauchi, Marco Spataro
  • Patent number: 10026979
    Abstract: Disclosed herein is an apparatus for controlling a fuel cell system, which includes multiple hot boxes including multiple fuel cell stacks, using a reconfigurable network having linear switching complexity, includes: a power conversion system for supplying outputs of normal stacks among the multiple fuel cell stacks to a load; at least one auxiliary power conversion system for supplying an output of at least one deteriorated stack among the multiple stacks to a load; a reconfigurable switch network for connecting in series or in parallel stacks of any hot box to stacks of another hot box; and a control unit for controlling an operation of the reconfigurable switch network by detecting a state of each of the stacks.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: July 17, 2018
    Assignees: SK INNOVATION CO., LTD., SNU R&DB FOUNDATION
    Inventors: Byung Hee Kang, Seong Je Wu, Kyung Bin Yoo, Naehyuck Chang, Jaemin Kim
  • Patent number: 10000139
    Abstract: Disclosed are a safety system of a fuel cell vehicle and a control method for the safety system. A safety system of a fuel cell vehicle using a fuel cell and a high voltage battery as a power source may include: a power switch disposed on a power wire connecting the power source and a power load to each other; an insulation resistance measuring device measuring an insulation resistance between the power wire and a chassis; and a controller controlling an operation of the power switch based on a measured insulation resistance measured by the insulation resistance measuring device. When the measured insulation resistance is equal to or less than a reference resistance, the controller enters a safe mode and the power switch is turned off to thereby block power supplied to the power load.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: June 19, 2018
    Assignee: Hyundai Motor Company
    Inventors: Namwoo Lee, Soonil Jeon, Youngbum Kum, Juhan Kim, Saehoon Kim
  • Patent number: 9912003
    Abstract: A fuel cell stack includes: a cell stack structure formed by stacking a plurality of cells; a pair of current collectors; a pair of end members; and a fastener band wrapped around a cell stack formed by stacking the cell stack structure, the pair of current collectors, and the pair of end members. Each of the pair of end members includes a plurality of plate members. The plate members have a same arched shape in which a height from a surface to contacting a corresponding one of the pair of current collectors gradually increases toward a center portion from both ends, and are disposed in parallel while being apart from each other in a width direction of the fastener band. Adjacent plate members are coupled to each other through a bendable coupling member at part of facing surfaces.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 6, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Morimoto, Mitsuo Yoshimura, Kenji Arai, Kozue Kuniyoshi
  • Patent number: 9847650
    Abstract: An energy management system having a fuel cell apparatus (150) as a power generator that generates power using fuel, and an EMS (200) that communicates with the fuel cell apparatus (150). The EMS (200) receives messages that indicate a type of the fuel cell apparatus (150), from the fuel cell apparatus (150).
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: December 19, 2017
    Assignee: KYOCERA CORPORATION
    Inventor: Kazutaka Nakamura
  • Patent number: 9793561
    Abstract: An object is to provide a technique that a current state of a fuel cell may be detected more accurately. A fuel cell system includes a controller, a fuel cell, and an impedance measurer that may measure an impedance of the fuel cell. The controller obtains a first impedance value that expresses the impedance of the fuel cell in a predetermined state, acquires a second impedance value that expresses the impedance of the fuel cell that is measured by the impedance measurer during operation control of the fuel cell, and performs operation control of the fuel cell using the first impedance value and the second impedance value.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: October 17, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Ogawa, Yoshiaki Naganuma
  • Patent number: 9780393
    Abstract: A cooling system is provided for use with a fuel cell. The cooling system comprises a first heat exchanger fluidly connected to an outlet passage of the fuel cell. The first heat exchanger can be configured to condense at least a portion of a fluid passing through the outlet passage of the fuel cell into liquid water. The cooling system can also comprise a second heat exchanger fluidly connected to an outlet passage of the first heat exchanger and an inlet passage of the fuel cell. The second heat exchanger can be configured to cool a fluid passing into the inlet passage of the fuel cell. In addition, the outlet passage of the fuel cell and the inlet passage of the fuel cell can be fluidly connected to a cathode of the fuel cell, and the inlet passage of the fuel cell can be configured to supply water to the cathode.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 3, 2017
    Assignee: Nuvera Fuel Cells, LLC
    Inventors: Brian J. Bowers, Steven Fiore, Ware Fuller, Greg Hickey, Changsik Kim
  • Patent number: 9761896
    Abstract: A method for stopping a fuel cell system includes supplying a fuel gas containing a fuel to an anode of a fuel cell which is to generate electric power. An oxidant gas containing an oxidant is supplied to a cathode of the fuel cell. A concentration of the oxidant gas in the cathode is reduced. An output voltage of the fuel cell is lowered while a slope of a change in the output voltage with respect to elapsed time is controlled such that an output current of the fuel cell has a predetermined relationship with a predetermined current reference value.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: September 12, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kenji Taruya, Yuji Matsumoto, Nobuki Koiwa
  • Patent number: 9758058
    Abstract: An emergency start method for a fuel cell-powered vehicle includes starting the vehicle and detecting an abnormal state of a power supply system of an air blower upon the start of the vehicle. If the power supply system of the air blower is in the abnormal state, an air-check valve of a fuel cell opens. Hydrogen is supplied to the fuel cell, and the air blower operates with power generated from the fuel cell and an emergency start system.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 12, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sung Gone Yoon, Kyu Il Lee, Kyung Won Suh, Seon Hak Kim
  • Patent number: 9716504
    Abstract: A power control device 9 of the present invention includes: a power-supply target value obtaining unit 21 configured to obtain electric power being currently consumed by a load as a power-supply target value; a generated-power detection unit 22 configured to detect a generated-power value generated by a fuel cell 2 with respect to the power-supply target value; a power compensation amount calculation unit 23 configured to calculate a deviation of the generated-power value from the power-supply target value and determine an amount of power compensation to be supplied to the load from a storage cell 6; and an output power control unit 24 configured to determine current transient response characteristics of the storage cell 6, and perform control so that output power from the storage cell 6 becomes equal to the amount of power compensation based on the current transient response characteristics.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: July 25, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi Fujita
  • Patent number: 9647282
    Abstract: Provided is a method of controlling a fuel cell system including a stop command sensing process of sensing a stop command output when the fuel cell system stops, an anode pressure increasing process of increasing pressure so that the pressure of the anode reaches a first predetermined pressure value, and a stop-time discharge process of performing discharge by consuming oxygen remaining within an oxidant off-gas while driving an oxidant off-gas circulation pump.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: May 9, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Koichiro Furusawa, Kaoru Yamazaki
  • Patent number: 9608449
    Abstract: Provided is a power system that can arbitrarily set output power while stabilizing output voltages. Connection terminals 13 and 23 of lower power sources 1 and 2 are connected to external connection terminals 41 in parallel. Voltage measurement section 31 measures voltage values of external connection terminals 41 as measured voltage values. Power converters 12 and 22 measure power supply capacities of lower power sources 1 and 2, respectively. Output instruction section 32 adjusts power or currents flowing through connection terminals 13 and 23 based on the measured voltage values and the power supply capacities so that the measured voltage values are included in a predetermined voltage range.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 28, 2017
    Assignee: NEC Corporation
    Inventors: Shingo Takahashi, Yasuhiro Ishikawa, Kazuaki Honda
  • Patent number: 9541001
    Abstract: A drive unit includes a combustion chamber for combusting a fuel/air mixture, and a fuel cell device, wherein the fuel cell device includes at least one fuel cell, which in each case includes an anode that is couplable to a fuel line, a cathode that is couplable to an air source, and a fluid outlet and is arranged upstream of the combustion chamber. The combustion chamber further includes a combustion chamber inlet for supplying the fuel/air mixture, and a combustion chamber outlet for discharging exhaust gas, and the combustion chamber inlet is connected to the fluid outlet of the fuel cell device. In this way a hybrid drive unit can be provided which apart from mechanical power also generates electrical power at high efficiency.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: January 10, 2017
    Assignee: Airbus Operations GmbH
    Inventors: Jürgen Steinwandel, Christian Wolff, Claus Hoffjann
  • Patent number: 9515331
    Abstract: A fuel cell including a stack in which a plurality of cells are stacked includes an air manifold and a hydrogen manifold on a first side and a second side of the stack, respectively, a jet array including a tubular body inserted in the air manifold or the hydrogen manifold and a plurality of orifices formed in the tubular body and arranged in a longitudinal direction of the tubular body, a pump or a valve for supplying air or hydrogen to the jet array; and a controller that operates the pump or the valve.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: December 6, 2016
    Assignee: Hyundai Motor Company
    Inventors: Yong Gyu Noh, Dong Jo Oh, Bu Kil Kwon