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公开(公告)号：US20230054074A1
公开(公告)日：2023-02-23
申请号：US17890915
申请日：2022-08-18
发明人： Jung Jae LEE , Dae Jong KIM
IPC分类号： H01M8/04537 , H01M8/04955 , H01M8/0432 , H01M8/04492
摘要： A method of controlling a fuel cell includes collecting, by a control unit, environmental information and state information of a fuel cell stack; determining, by the control unit, a motor output offset value from the collected environmental information and the collected state information of the fuel cell stack; correcting, by the control unit, a default critical output corresponding to a current vehicle operating state based on the determined motor output offset value; determining, by the control unit, the stop or the restart of the fuel cell by comparing a motor output demand determined from current vehicle operating information with the corrected critical output; and controlling, by the control unit, an operating state of the fuel cell to become a state of the determined stop or restart.
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公开(公告)号：US20230035889A1
公开(公告)日：2023-02-02
申请号：US17860397
申请日：2022-07-08
发明人： Sang Wook HAN , Dae Jong KIM , Jae Won JUNG
IPC分类号： H01M8/04746 , H01M8/04119 , H01M8/0438 , H01M8/0444
摘要： A device for controlling compensation for an air flow rate upon discharge of hydrogen off-gas and a method for controlling compensation for an air flow rate using the same is an air flow rate control device configured to control a flow rate of air supplied to a fuel cell cathode through an air supply unit of a fuel cell system, wherein the air flow rate control device is configured to determine whether a fuel discharge valve of the fuel cell system is opened and determine a fuel diffusion amount per unit time, wherein the fuel diffusion amount corresponds to an amount of the hydrogen off-gas discharged through the fuel discharge valve and diffused into an air supply unit through a humidifier, and compensate a target air flow rate depending on an oxygen concentration reduction proportion, determined according to the determined fuel diffusion amount per unit time and flow rate information of the air supply unit.
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公开(公告)号：US20230170506A1
公开(公告)日：2023-06-01
申请号：US17890247
申请日：2022-08-17
发明人： Seong Cheol JEONG , Hyo Jin PARK , Dae Jong KIM , Sang Chul YEOM
IPC分类号： H01M8/04858 , H01M8/04537 , H02J7/00
CPC分类号： H01M8/04932 , H01M8/04582 , H01M8/04902 , H02J7/0048 , H02J7/00712 , H02J7/007194
摘要： A system and method for controlling power for a fuel cell are disclosed. The system includes: a fuel cell; a load device electrically connected to the fuel cell; a stack controller configured to set a stack limit current on the basis of a current output current of the fuel cell, the stack limit current configured to limit an output current of the fuel cell on the basis of an output voltage of the fuel cell; and a load controller configured to set a consumption limit current on the basis of the set stack limit current, the consumption limit current configured to limit a consumption current of the load device, the load controller being configured to control the consumption current of the load device to a value equal to or lower than the set consumption limit current.
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公开(公告)号：US20240014423A1
公开(公告)日：2024-01-11
申请号：US18117110
申请日：2023-03-03
发明人： Jae Ok HA , Dae Jong KIM , Jae Won JUNG
IPC分类号： H01M8/04664 , H01M8/04089 , H01M8/0438 , H01M8/04858 , H01M8/043 , H01M8/04746 , G05D16/20
CPC分类号： H01M8/04664 , H01M8/04089 , H01M8/04395 , H01M8/04873 , H01M8/043 , H01M8/04753 , G05D16/2013
摘要： An air supply system for fuel cells includes a fuel cell, an air supply line connected to a cathode of the fuel cells to supply external air to the cathode of the fuel cell, an air pressure sensor provided on the air supply line, and configured to measure a pressure in the air supply line, a determiner configured to determine whether correction for the air pressure is necessary, and a controller connected to the determiner and configured to perform the correction for the air pressure sensor by performing voltage control of the fuel cell, upon determining that the correction for the air pressure sensor is necessary.
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公开(公告)号：US20220190365A1
公开(公告)日：2022-06-16
申请号：US17459769
申请日：2021-08-27
发明人： Jae Ho HAN , Dae Jong KIM
IPC分类号： H01M8/04302 , H01M8/04537
摘要： Disclosed are a system and method for controlling a cold start of a fuel cell. The system includes a fuel cell configured to be supplied with fuel gas and oxidizing gas so as to generate electric power, a main bus terminal configured to electrically connect an output terminal of the fuel cell to a high-voltage battery, accessories, or a driving device so as to output the electric power generated by the fuel cell, a main relay provided at the main bus terminal between the output terminal of the fuel cell and the high-voltage battery, the accessories, or the driving device and configured to electrically connect or cut off the main bus terminal, a COD resistor connected to the main bus terminal at an output terminal side of the fuel cell with reference to the main relay, and a controller configured to supply the electric power generated by the fuel cell to the COD resistor in the state in which the main relay is cut off, and to control the COD resistor to consume the electric power generated by the fuel cell and supplied thereto.
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公开(公告)号：US20230216074A1
公开(公告)日：2023-07-06
申请号：US17846559
申请日：2022-06-22
发明人： Doo Hyun KIM , Hyo Jin PARK , Dae Jong KIM , Jong Gyun KIM
IPC分类号： H01M8/04664 , H01M8/04537
CPC分类号： H01M8/04679 , H01M8/04559 , H01M8/04589 , H01M2250/20
摘要： A system for determining performance of a fuel cell stack may include a vehicle that collects a current of the fuel cell stack and a current of the fuel cell stack and a server that receives the voltage of the fuel cell stack and the current of the fuel cell stack from the vehicle in real time, determines an average state of health (SOH) of the fuel cell stack for each current section within an effective current range based on the current of the fuel cell stack and the voltage of the fuel cell stack within the effective current range, determines an overall average SOH in the effective current range based on the average SOH of the fuel cell stack for each current section, and determines whether the fuel cell stack has failed based on the overall average SOH.
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公开(公告)号：US20230268530A1
公开(公告)日：2023-08-24
申请号：US17890606
申请日：2022-08-18
发明人： Jae Ho HAN , Dae Jong KIM , Chang Hwa HYUN
IPC分类号： H01M8/04664
CPC分类号： H01M8/04671 , H01M2250/20 , G07C5/0808
摘要： A system and method for diagnosing a fuel cell includes one or more fuel cell modules each including a fuel cell stack to output power through a first converter and a battery connected to the fuel cell stack through a second converter; and a controller configured to determine whether diagnosis of the fuel cell stack included in the one or more fuel cell modules is required, and to control the one or more fuel cell module to simultaneously or sequentially diagnose the fuel cell stack determined to require diagnosis based on an output demand power of the one or more fuel cell modules.
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公开(公告)号：US20190288315A1
公开(公告)日：2019-09-19
申请号：US16032296
申请日：2018-07-11
发明人： Dae Jong KIM
IPC分类号： H01M8/04955 , H01M8/04303 , H01M8/04746 , H01M8/04858 , H01M10/44 , B60L11/18 , B60L3/04 , H02J7/34
摘要： A method of shutting down operation of a fuel cell vehicle includes: blocking, by a controller, an air supply to a fuel cell stack when an operation shutting down command of the fuel cell vehicle is applied; increasing, by the controller, a voltage at an rear end of a stack main relay connected to the fuel cell stack; and opening, by the controller, the stack main relay when the voltage at the rear end of the stack main relay is higher than a stack voltage by a predetermined voltage or more.
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9.发明申请公开(公告)号：US20210151784A1
公开(公告)日：2021-05-20
申请号：US16927957
申请日：2020-07-13
发明人： Jae Ho HAN , Jae Won JUNG , Jai Hyun AHN , Dae Jong KIM , Hyun Jae LEE
IPC分类号： H01M8/04746 , H01M8/0444 , H01M8/04791 , H01M8/04302
摘要： The present disclosure relates to an apparatus and a method for controlling a concentration of exhaust hydrogen in a fuel cell system. The apparatus may include an air exhaust valve for discharging hydrogen from a cathode in a fuel cell stack to an outside environment through an air exhaust line, an air compressor for supplying ambient air to the air exhaust line, an air cut-off valve for blocking air supplied to the cathode, and a controller that opens the air exhaust valve and drives the air compressor when starting to supply hydrogen to the fuel cell stack, and opens the air cut-off valve such that a concentration of the hydrogen discharged from the cathode is reduced by air in the air exhaust line when the hydrogen supply is completed.
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公开(公告)号：US20210091395A1
公开(公告)日：2021-03-25
申请号：US16994876
申请日：2020-08-17
发明人： Seong Cheol JEONG , Jong Gyun KIM , Dae Jong KIM , Jae Won JUNG
IPC分类号： H01M8/04537 , H01M8/04014 , H01M8/04313
摘要： The present disclosure relates to a method of recovering performance of a fuel cell stack in a fuel cell system of a vehicle. The method includes determining whether the fuel cell stack is in a state in which a stack performance recovery operation is possible based on information collected from the vehicle using a predetermined stack state determination criterion, determining whether the vehicle is in a state in which the stack performance recovery operation is possible based on operation information of a fuel cell system, and performing the stack performance recovery operation upon determining that the fuel cell stack is in the state in which the stack performance recovery operation is possible and that the vehicle is in the state in which the stack performance recovery operation is possible.
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