公开(公告)号：US20240178414A1

公开(公告)日：2024-05-30

申请号：US17993873

申请日：2022-11-24

Applicant: Honda Motor Co., Ltd.

Inventor： Tatsuro HARUKI

IPC: H01M8/04089 ,  H01M8/04014 ,  H01M8/04119 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04701 ,  H01M8/04746

CPC classification number: H01M8/04097 ,  H01M8/04014 ,  H01M8/04141 ,  H01M8/04164 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04649 ,  H01M8/04701 ,  H01M8/04753 ,  H01M8/04761 ,  H01M2250/20

Abstract: A fuel cell (FC) system is provided, having a FC stack supplied with a reaction gas and performing power generation by electrochemical reaction of the reaction gas. The FC system includes a supply passage, supplying the reaction gas to the FC stack; a discharge passage, distributing an off-gas discharged from a discharge outlet of the fuel cell stack; a bypass passage, communicate between the supply passage and the discharge passage; a cooling passage, provided in the discharge passage and having a heat sink to condense water in the off-gas; a circulation pump, provided in the bypass passage and circulating the off-gas discharged from the discharge passage to the supply passage when the FC system stops. When the FC system stops, as the temperature information of the FC stack from temperature information acquisition unit is equal to or larger than a predetermined first threshold temperature, the controller activates the circulation pump.

公开(公告)号：US20240170694A1

公开(公告)日：2024-05-23

申请号：US18284316

申请日：2022-01-12

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Jan Pfannenmueller ,  Matthias Reum ,  Markus Popp

IPC: H01M8/04089 ,  H01M8/04223 ,  H01M8/04746

CPC classification number: H01M8/04097 ,  H01M8/04231 ,  H01M8/04753

Abstract: A blocking device for a recirculation loop in a fuel cell stack comprises a hydrogen inlet and a recirculation gas inlet. In order to obtain an inexpensive blocking device for the recirculation loop, a recirculation loop blocking valve is provided, which is switched by an upstream hydrogen switching valve.

公开(公告)号：US11978935B2

公开(公告)日：2024-05-07

申请号：US17617870

申请日：2021-02-22

Applicant: MICRO CONTROL SYSTEMS LTD.

Inventor： Katsumichi Tagami ,  Soichi Hashiba ,  Takeshi Kitazawa ,  Noboru Fujii

IPC: H01M8/0662 ,  B01D53/22 ,  B01D53/26 ,  C01B21/04 ,  H01M8/04029 ,  H01M8/04119 ,  H01M8/04746

CPC classification number: H01M8/0662 ,  B01D53/227 ,  B01D53/26 ,  C01B21/045 ,  H01M8/04029 ,  H01M8/04164 ,  H01M8/04753 ,  B01D2053/224 ,  C01B2210/0014 ,  C01B2210/0062

Abstract: An apparatus/system for generating a high-purity nitrogen gas using a fuel cell includes; a fuel cell that operates by taking in air or a gas containing nitrogen and oxygen, and a fuel gas; a dehumidification mechanism that reduces moisture or water vapor content in an exhaust gas that is extracted from the fuel cell and has a lower oxygen concentration than air; and a filtering mechanism which includes a filter using fibers having different degrees of permeation for nitrogen and oxygen and converts the exhaust gas having a reduced moisture or water vapor content into a gas having an increased nitrogen concentration. The filter recovery ratio is higher when an oxygen concentration of a gas to be filtered is lower. The dehumidification mechanism is a pump unit including a water seal pump to provide an adiabatic expansion chamber in which the exhaust gas extracted from the fuel cell expands adiabatically.

公开(公告)号：US20240145743A1

公开(公告)日：2024-05-02

申请号：US18549485

申请日：2022-02-14

Applicant: Norgren Manufacturing Co., Ltd.

Inventor： Yi Liu ,  Jing Cheng ,  Yujie Bai

IPC: H01M8/04082 ,  H01M8/04007 ,  H01M8/04029 ,  H01M8/04089 ,  H01M8/04746

CPC classification number: H01M8/04201 ,  H01M8/04029 ,  H01M8/04037 ,  H01M8/04097 ,  H01M8/04753

Abstract: A fuel supply apparatus for a fuel cell system, the apparatus comprising a manifold unit comprising a body; a fuel supply flow path by which fuel is supplied to an inlet of said fuel cell system, the fuel supply flow path extending at least partly through the body of the manifold unit; a fuel recirculation flow path by which residual fuel is transferred from an outlet of said fuel cell system to the fuel supply flow path, the fuel recirculation flow path extending at least partly through the body of the manifold unit; at least one valve for controlling flow along the fuel supply flow path and/or the fuel recirculation flow path, wherein the at least one valve is integral to the body of the manifold unit; and a heating apparatus, wherein at least a heating portion of the heating apparatus is integral to the body of the manifold unit.

公开(公告)号：US20240145742A1

公开(公告)日：2024-05-02

申请号：US18409426

申请日：2024-01-10

Applicant: EKPO FUEL CELL TECHNOLOGIES GMBH

Inventor： Wadim Kaiser ,  Stefan Hemmer ,  Jürgen Kraft

IPC: H01M8/04119 ,  H01M8/04082 ,  H01M8/04746

CPC classification number: H01M8/04156 ,  H01M8/04201 ,  H01M8/04746

Abstract: In order to create a fuel cell system, comprising at least one fuel cell stack and a channel system for supplying a fluid medium to the fuel cell stack and/or for discharging a fluid medium from the fuel cell stack, a first water collection region in which water collects in a first range of operating positions of the fuel cell system, and a first water discharge port by which water is able to be discharged from the first water collection region, in which fuel cell system a drain operation is performable in any operating position of the fuel cell system, by which drain operation accumulated water is able to be discharged from the fuel cell system, it is proposed that the fuel cell system comprises at least one second water collection region in which water collects in a second range of operating positions of the fuel cell system, and at least one second water discharge port by which water is able to be discharged from the second water collection region.

公开(公告)号：US20240136555A1

公开(公告)日：2024-04-25

申请号：US18337848

申请日：2023-06-19

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Hyun Young Pi

IPC: H01M8/04746 ,  H01M8/04029 ,  H01M8/0432 ,  H01M8/0438

CPC classification number: H01M8/04768 ,  H01M8/04029 ,  H01M8/04358 ,  H01M8/04395

Abstract: An embodiment fuel cell cooling control system including an inlet temperature sensor configured to detect a coolant inlet temperature including a temperature of a coolant supplied to a coolant inlet of a fuel cell stack, an outlet temperature sensor configured to detect a coolant outlet temperature including the temperature of the coolant discharged from a coolant outlet of the fuel cell stack, a pressure detector configured to detect a gas inlet pressure including a pressure of air supplied to a cathode-side inlet of the fuel cell stack, and a controller configured to estimate a reaction surface temperature in a cell of the fuel cell stack based on the coolant inlet temperature, the coolant outlet temperature, and the gas inlet pressure and to control a flow rate of the coolant supplied to the fuel cell stack according to the estimated reaction surface temperature.

公开(公告)号：US11962049B2

公开(公告)日：2024-04-16

申请号：US17851535

申请日：2022-06-28

Applicant: HYUNDAI MOTOR COMPANY ,  Kia Corporation

Inventor： Ji Tae Kim

IPC: H01M8/04858 ,  H01M8/04225 ,  H01M8/04228 ,  H01M8/04302 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04746 ,  H02M3/335

CPC classification number: H01M8/0494 ,  H01M8/04225 ,  H01M8/04228 ,  H01M8/04302 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04753 ,  H02M3/33569

Abstract: An apparatus and a method for controlling a fuel cell system includes a fuel cell system including a fuel cell stack, a balance of plant for operating the fuel cell stack, and a fuel cell controller configured for controlling the BOP, a first power converter located between the fuel cell stack and a first voltage battery and including a bidirectional low voltage DC/DC converter, a second power located between the fuel cell stack and a second voltage battery to include a single bidirectional DC/DC converter module, and a controller configured for operating the first power converter or the single bidirectional DC/DC converter module of the second power converter, when the fuel cell system is started or stopped, and controlling the first power converter or the second power converter to supply driving power to the BOP using electrical energy of the first voltage battery or the second voltage battery.

公开(公告)号：US20240120513A1

公开(公告)日：2024-04-11

申请号：US18368943

申请日：2023-09-15

Applicant: MAHLE International GmbH

Inventor： Markus Auer ,  Richard Bruemmer ,  Thomas Strauss

IPC: H01M8/04223 ,  H01M8/04029 ,  H01M8/04746

CPC classification number: H01M8/04253 ,  H01M8/04029 ,  H01M8/04746 ,  H01M2250/20

Abstract: A freeze protection method for a fuel cell system is disclosed. The fuel cell system includes an evaporative cooler device equipped for cooling a heat exchanger of a fuel cell device of the fuel cell system having a feed line, through which during the operation of the fuel cell system, water is pumped to a sprinkling device of the evaporative cooler device and by way of the sprinkling device, the water is applied onto the heat exchanger equipped for temperature-controlling a fuel cell stack of the fuel cell device. The method includes blowing out the evaporative cooler device as part of a deactivation method of the fuel cell system.

公开(公告)号：US20240113310A1

公开(公告)日：2024-04-04

申请号：US18463511

申请日：2023-09-08

Applicant: HYUNDAI MOBIS CO., LTD.

Inventor： Yong Hee LEE

IPC: H01M8/04119 ,  B60L58/12 ,  B60L58/30 ,  B60L58/40 ,  H01M8/04223 ,  H01M8/04746

CPC classification number: H01M8/04119 ,  B60L58/12 ,  B60L58/30 ,  B60L58/40 ,  H01M8/04231 ,  H01M8/04753 ,  H01M2250/20

Abstract: A fuel cell system including a hydrogen exhaust valve provided in an outlet of a hydrogen tank, the hydrogen tank configured to supply hydrogen to a fuel cell stack, the hydrogen exhaust valve being configured to exhaust remaining hydrogen in the hydrogen tank to an outside, and a controller configured to diagnose a fault cause when a fault occurs during a flight of a flying object associated with the fuel cell stack, perform an exhaust operation on the hydrogen stored in the hydrogen tank responsive to the fault cause, and control the hydrogen exhaust valve according to the exhaust operation.

公开(公告)号：US11949133B1

公开(公告)日：2024-04-02

申请号：US18338205

申请日：2023-06-20

Applicant: ZeroAvia, Inc.

Inventor： Valery Miftakhov ,  Bob L. Mackey ,  Jacob T. Needels

IPC: H01M8/04119 ,  H01M8/04746 ,  H01M8/04828

CPC classification number: H01M8/04141 ,  H01M8/04761 ,  H01M8/04776 ,  H01M8/04843 ,  H01M2250/20

Abstract: Disclosed is a system for humidifying cabin and/or cockpit air of a fuel cell-powered aircraft system. The system includes a fuel cell stack configured for reacting hydrogen and oxygen to produce electrical energy and a cathode exhaust containing moist, warm air; a water separator configured to cool the moist, warm air and to condense and separate liquid water from the moist, warm air; and a humidifier configured to employ the separated liquid water to humidify pressurized cabin air.