ClassID:

213498

H01M8/04559 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids; Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function; Electric variables; Voltage of fuel cell stacks

Recent Application in this class:
#1
20260149017
2026-05-28

METHOD OF DIAGNOSING LEAKAGE OF STACK COOLANT AND DEVICE THEREFOR

#2
20260142205
2026-05-21

DIAGNOSTIC METHOD FOR DIAGNOSING A STATE OF AN ELECTROCHEMICAL CELL OF AN ELECTROCHEMICAL ENERGY CONVERTER

#3
20260135167
2026-05-14

Fuel Cell System

#4
20260135128
2026-05-14

VOLTAGE MEASUREMENT DEVICE FOR FUEL CELL AND FUEL CELL MODULE

#5
20260106193
2026-04-16

FUEL CELL SYSTEM AND METHOD FOR CONTROLLING A HEATING CURRENT FOR TEMPERATURE CONTROL OF A FUEL CELL STACK OF A FUEL CELL SYSTEM

#6
20260100389
2026-04-09

FUEL CELL VEHICLE AND METHOD OF CONTROLLING THE SAME

#7
20260045522
2026-02-12

HYDRODREN FUEL CELL VOLTAGE MONITOR INTERFACE

#8
20260031374
2026-01-29

VOLTAGE MONITORING ARRANGEMENT FOR AN ELECTRIC CELL STACK, PARTICULARLY FOR A FUEL CELL STACK

#9
20260024790
2026-01-22

Fuel Cell System and Method of Controlling the Same

#10
20260018633
2026-01-15

METHOD OF THERMAL MANAGEMENT OF FUEL CELL SYSTEM USING MEA TEMPERATURE ESTIMATION

#11
20260005276
2026-01-01

Fuel Cell System and Method of Controlling the Same

#12
20250357511
2025-11-20

APPARATUS AND METHOD FOR CONTROLLING AIR SUPPLY INTO FUEL CELL STACK

#13
20250349870
2025-11-13

EMITTERS FOR CELL VOLTAGE MONITORING

#14
20250316737
2025-10-09

AN ELECTRONICALLY COMMUTATED FUEL CELL SYSTEM

#15
20250300202
2025-09-25

STARTUP CONTROL METHOD OF FUEL CELL SYSTEM

#16
20250273711
2025-08-28

STARTUP CONTROL METHOD AND APPARATUS FOR FUEL CELL SYSTEM, ELECTRONIC DEVICE, AND MEDIUM

#17
20250253368
2025-08-07

METHOD FOR CONTROLLING FUEL CELL DEVICE, CONTROL DEVICE, AND FUEL CELL SYSTEM

#18
20250246650
2025-07-31

SYSTEM AND METHOD FOR MAXIMIZING THE OPERATING TIME OF FUEL CELL STACKS

#19
20250226428
2025-07-10

METHOD FOR OPERATING A FUEL CELL SYSTEM

#20
20250219115
2025-07-03

SYSTEMS AND METHODS FOR OPERATING A FUEL CELL SYSTEM

#21
20250211021
2025-06-26

BATTERY MANAGEMENT CONTROL SYSTEM OF FLOW BATTERY

#22
20250201882
2025-06-19

APPARATUS FOR RECOVERING DEGRADATION OF ANODE CATALYST AND METHOD THEREOF

#23
20250201878
2025-06-19

COLD START SYSTEM OF FUEL CELL VEHICLE AND COLD START CONTROL METHOD OF FUEL CELL VEHICLE

#24
20250201877
2025-06-19

COLD START CONTROL METHOD OF FUEL CELL STACK AND COLD START SYSTEM OF FUEL CELL STACK

#25
20250192206
2025-06-12

HUMIDIFIER LEAK DIAGNOSIS SYSTEM AND METHOD FOR A FUEL CELL SYSTEM

#26
20250183336
2025-06-05

METHOD FOR MONITORING A BATTERY POWER PLANT

#27
20250149605
2025-05-08

LEAK DIAGNOSIS SYSTEM FOR HUMIDIFIER OF FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

#28
20250116714
2025-04-10

VOLTAGE MONITORING DEVICE FOR AN ELECTRIC STACK, PARTICULARLY FOR A FUEL CELL STACK

#29
20250112257
2025-04-03

FUEL CELL SYSTEM CAPABLE OF IMPROVING UTILIZATION OF MIXED FUEL

#30
20250105320
2025-03-27

DYNAMIC FUEL CELL STACK SWITCHING

#31
20250096290
2025-03-20

METHOD FOR OPERATING A FUEL CELL SYSTEM, AND A CONTROL DEVICE

#32
20250083572
2025-03-13

POWER SOURCE ASSEMBLY FOR AN AERONAUTICAL VEHICLE

#33
20250070202
2025-02-27

VOLTAGE BLEED DOWN DURING HYDROGEN FUEL CELL SHUTDOWN FOR MEMBRANE FAILURE DETECTION

#34
20250015321
2025-01-09

CELL MONITORING DEVICE FOR FUEL CELL

#35
20250006958
2025-01-02

Intelligent Buffered Fuel Cell With Low Impedance

#36
20240417084
2024-12-19

ELECTRICAL SYSTEM

#37
20240377465
2024-11-14

METHOD FOR PREVENTING DAMAGE TO A FUEL CELL STACK

#38
20240332574
2024-10-03

FUEL CELL SYSTEM AND METHOD OF CONTROLLING THE SAME TO OPTIMIZE ITS OPERATION

#39
20240332572
2024-10-03

FUEL CELL SYSTEM

#40
20240332567
2024-10-03

FUEL CELL SYSTEM

#41
20240322208
2024-09-26

FUEL CELL SYSTEM

#42
20240313245
2024-09-19

FUEL CELL SYSTEM

#43
20240297318
2024-09-05

CELL DEGRADATION LEVEL CALCULATION DEVICE FOR ELECTROCHEMICAL CELL STACK, CELL DEGRADATION LEVEL CALCULATION SYSTEM, CELL DEGRADATION LEVEL CALCULATION METHOD, AND STORAGE MEDIUM STORING CELL DEGRADATION LEVEL CALCULATION PROGRAM

#44
20240283058
2024-08-22

FUEL CELL SYSTEM

#45
20240234876
2024-07-11

DEVICE FOR ELECTRICALLY CONNECTING A FUEL CELL STACK AND A HIGH-VOLTAGE BATTERY

#46
20240234763
2024-07-11

APPARATUS FOR CONTROLLING FUEL CELL AND CONTROL METHOD THEREOF

#47
20240222670
2024-07-04

SYSTEMS AND METHODS FOR OPERATING A FUEL CELL

#48
20240213506
2024-06-27

METHOD AND APPARATUS FOR ENTERING A STANDARD STATE FOR VANADIUM-BASED BATTERIES

#49
20240186538
2024-06-06

ELECTROCHEMICAL DEVICE

#50
20240186537
2024-06-06

Stack of electrochemical units

#51
20240162463
2024-05-16

DEVICE FOR DETERMINING WATER CONTENT STATE OF FUEL CELL STACK AND FUEL CELL VEHICLE

#52
20240128484
2024-04-18

FUEL CELL SYSTEM AND METHOD OF CONTROLLING THE SAME

#53
20240128479
2024-04-18

Cell-Monitoring Connector for Fuel Cell

#54
20240120514
2024-04-11

FUEL LEAK DETECTION IN FUEL CELL STACK

#55
20240105977
2024-03-28

APPARATUS FOR SENSING VOLTAGE INFORMATION OF FUEL CELL

#56
20240079617
2024-03-07

SYSTEMS AND METHODS FOR CONTROLLING AIR FLOW AT A FUEL CELL

#57
20240072282
2024-02-29

FUEL CELL SYSTEM

#58
20240047718
2024-02-08

METHOD FOR ESTABLISHING THE DEGRADATION OF A HUMIDIFIER

#59
20240036092
2024-02-01

Measuring the impedance in grounding systems

#60
20230420711
2023-12-28

FUEL CELL SYSTEM

#61
20230411656
2023-12-21

Fuel cell system and method for controlling purge thereof

#62
20230387433
2023-11-30

Controlling PEMFC stack flooding

#63
20230378503
2023-11-23

METHOD FOR CONTROLLING MULTIPLE FUEL CELLS OF FUEL CELL VEHICLE

#64
20230369618
2023-11-16

FUEL CELL CONTROL COMMAND DEVICE

#65
20230327154
2023-10-12

ASSESSING HEALTH OF A FUEL STACK USING FUEL CELL VOLTAGE DIAGNOSTICS

#66
20230317990
2023-10-05

POWER SUPPLY SYSTEM, CONTROL METHOD, AND PROGRAM

#67
20230275244
2023-08-31

Fuel leak detection in fuel cell stack

#68
20230268765
2023-08-24

BATTERY MANAGEMENT SYSTEM OF FLOW BATTERY

#69
20230261229
2023-08-17

Voltage-based fuel cell control

#70
20230261223
2023-08-17

Cell voltage control through oxygen starvation for fuel cell systems

#71
20230261220
2023-08-17

Apparatus for Converting Power of Fuel Cell for Power Generation and Method Thereof

#72
20230253588
2023-08-10

Fuel cell system having maximum cell voltage constraint

#73
20230246209
2023-08-03

GLUELESS REPEATABLE FINGER ATTACHMENT FOR MONITORING FUEL CELL VOLTAGE

#74
20230223570
2023-07-13

Fuel cell system and method for controlling the same

#75
20230216075
2023-07-06

Method for distinguishing the cause of voltage losses in a fuel cell device, fuel cell device and motor vehicle having such a device

#76
20230216074
2023-07-06

System and method for determining performance of fuel cell stack

#77
20230197990
2023-06-22

Fuel Cell Device

#78
20230197989
2023-06-22

Recovery control system of fuel cell and method thereof

#79
20230170505
2023-06-01

APPARATUS FOR CONTROLLING OPERATION OF FUEL CELL SYSTEM AND METHOD THEREFOR

#80
20230170502
2023-06-01

PURGE SYSTEMS AND METHODS IN A FUEL CELL SYSTEM

#81
20230147324
2023-05-11

DEVICE AND METHOD FOR CONTROLLING FUEL CELL SYSTEM

#82
20230124256
2023-04-20

METHOD FOR CONTROLLING FUEL CELL DEVICE

#83
20230112651
2023-04-13

Cell-Monitoring Connector for Fuel Cell

#84
20230104735
2023-04-06

Fuel cell power system

#85
20230099226
2023-03-30

FUEL CELL SYSTEM

#86
20230094726
2023-03-30

SYSTEM INCLUDING FUEL CELL ASSEMBLY VOLTAGE MONITOR

#87
20230084323
2023-03-16

Method for controlling fuel cell device

#88
20230070193
2023-03-09

Fuel cell systems with series-connected subsystems

#89
20230061237
2023-03-02

System and method for controlling voltage of fuel cell

#90
20230054074
2023-02-23

Method of controlling fuel cell

#91
20230051038
2023-02-16

RECIRCULATION SYSTEM AND SUPPLY SYSTEM COMPRISING SAID SYSTEM

#92
20230039588
2023-02-09

ELECTRIC POWER GENERATION SYSTEM BASED ON PRESSURIZED FUEL CELL POWER SYSTEM WITH AIR COOLING AND RECIRCULATION AND METHOD FOR ELECTRIC POWER GENERATION BY THE SYSTEM

#93
20230022392
2023-01-26

SENSOR DEVICE FOR A FUEL CELL SYSTEM

#94
20230015110
2023-01-19

Method for Diagnosing at Least One Fuel Cell Stack of a Fuel Cell Device, Computer-Readable Storage Medium, and Fuel Cell Diagnostic System

#95
20220416275
2022-12-29

ELECTRICAL ENERGY SUPPLY SYSTEM FOR MOBILE PLATFORMS AND VEHICLE HAVING AN ELECTRICAL ENERGY SUPPLY SYSTEM

#96
20220416267
2022-12-29

POWER SUPPLY SYSTEM

#97
20220407095
2022-12-22

FUEL CELL STACK PROTECTION METHOD, DEVICE AND FUEL CELL POWER SUPPLY SYSTEM

#98
20220399555
2022-12-15

Control device for a fuel cells stack

#99
20220384826
2022-12-01

VOLTAGE MEASURING DEVICE FOR MEASURING THE VOLTAGE OF A PLURALITY OF ELECTROCHEMICAL CELLS OF AN ELECTROCHEMICAL REACTOR

#100
20220352533
2022-11-03

System and method for operating fuel cell

#101
20220320551
2022-10-06

Method of controlling fuel battery system

#102
20220320545
2022-10-06

Fuel cell system and control method at time of starting-up fuel cell system

#103
20220320538
2022-10-06

FUEL CELL POWER SYSTEM

#104
20220320535
2022-10-06

FUEL CELL POWER SYSTEMS

#105
20220311039
2022-09-29

FUEL CELL SYSTEM

#106
20220302483
2022-09-22

Electric power supply system, controlling method of electric power supply system, and storage medium

#107
20220293995
2022-09-15

Fuel cell system

#108
20220293994
2022-09-15

STACK CASE AND METHOD OF ASSEMBLING STACK CASE

#109
20220293983
2022-09-15

Charging system including fuel cell and charging method using the same

#110
20220285709
2022-09-08

Redox flow battery arrays and methods for state of charge balancing

#111
20220271320
2022-08-25

Fuel cell system

#112
20220271312
2022-08-25

Method of operating fuel cell system

#113
20220271309
2022-08-25

Voltage detection system and method of fuel cell stack

#114
20220231315
2022-07-21

Oxygen supply apparatus and method for fuel cell of aircraft

#115
20220209262
2022-06-30

Control system and method of fuel cell stacks

#116
20220200085
2022-06-23

Fuel cell system and method for controlling fuel cell system

#117
20220190366
2022-06-16

Method and system for correcting offset of hydrogen pressure sensor

#118
20220181659
2022-06-09

Fault diagnostic apparatus for a fuel cell electric vehicle and a method therefor

#119
20220173417
2022-06-02

System and method for measuring impedance of a fuel cell stack

#120
20220173416
2022-06-02

Fuel cell system and apparatus and method for diagnosing same

#121
20220166035
2022-05-26

Fuel cell system

#122
20220158205
2022-05-19

System and method for controlling fuel cell

#123
20220149400
2022-05-12

Device and method for online impedance spectrum measurement of vehicle-mounted hydrogen fuel cell

#124
20220109307
2022-04-07

Control system for discharging the cells of a fuel-cell stack

#125
20220109170
2022-04-07

Device and computer-implemented method for determining a state of a fuel cell system

#126
20220077480
2022-03-10

Method and system for operating an electrochemical fuel cell stack with improved performance recovery

#127
20220052362
2022-02-17

FUEL CELL ACTIVATION METHOD AND APPARATUS

#128
20210376361
2021-12-02

METHOD AND SYSTEM FOR POWER GENERATION WITH FUEL CELL

#129
20210376349
2021-12-02

Fuel cell system

#130
20210328239
2021-10-21

Fuel cell system with improved low temperature operation

#131
20210320353
2021-10-14

Fuel cell—battery hybrid system for transportation use

#132
20210296668
2021-09-23

Method for diagnosing degradation of fuel cell stack, method for multi-point analysis of fuel cell, and method for estimating performance of fuel cell membrane electrode

#133
20210265647
2021-08-26

Method of inspection for erroneous assembly of fuel cell stacks

#134
20210257635
2021-08-19

Fuel cell system and control method thereof

#135
20210229557
2021-07-29

Power supply device having a fuel cell arrangement and method for lowering voltage in a fuel cell arrangement

#136
20210226235
2021-07-22

Fuel cell system and method of controlling fuel cell system

#137
20210202968
2021-07-01

System including fuel cell assembly voltage monitor

#138
20210194023
2021-06-24

Fuel cell system

#139
20210184597
2021-06-17

Grid-connected power conversion system and control method thereof

#140
20210184235
2021-06-17

Method for calculating voltage loss of fuel cell and system performing the same

#141
20210175528
2021-06-10

Method for determining an operating state of an electrochemical system

#142
20210170911
2021-06-10

Vehicle and vehicle control method

#143
20210159524
2021-05-27

Apparatus for sensing voltage information of fuel cell

#144
20210146783
2021-05-20

Motor driving control method and system

#145
20210143456
2021-05-13

System and method for sensing fuel cell of vehicle

#146
20210141024
2021-05-13

Method and system for diagnosing the operating state of an electrochemical system in real-time, and electrochemical system incorporating this diagnostic system

#147
20210135258
2021-05-06

Apparatus and method for measuring voltage and average power of fuel cell

#148
20210135257
2021-05-06

Control method for fuel cell

#149
20210091395
2021-03-25

Method of recovering performance of fuel cell stack

#150
20210066735
2021-03-04

Apparatus for determining reactant purity

#151
20210036347
2021-02-04

Method for determining the starting state of a fuel cell system

#152
20200403257
2020-12-24

Fuel cell system

#153
20200403256
2020-12-24

Fuel cell system

#154
20200365921
2020-11-19

Control system and control method for driving of fuel cell

#155
20200361623
2020-11-19

Fuel cell power pack for drone and state information monitoring method thereof

#156
20200328439
2020-10-15

Methods and apparatus for detecting electrical short circuits in fuel cell stacks

#157
20200328433
2020-10-15

Method of limiting current of fuel cell stack

#158
20200303752
2020-09-24

Operating control method and control system of fuel cell stack

#159
20200295393
2020-09-17

Fuel cell stack

#160
20200287225
2020-09-10

System and method for controlling voltage of fuel cell

#161
20200266462
2020-08-20

DC voltage brownout protection for parallel-connected fuel-cell power plants in islanded mode

#162
20200266461
2020-08-20

System and method for generating electric power with a fuel cell array, control unit and dynamic electrical load

#163
20200251759
2020-08-06

System and method for controlling coolant temperature for fuel cell

#164
20200251758
2020-08-06

Fuel cell vehicle

#165
20200243878
2020-07-30

Fuel cell system

#166
20200239149
2020-07-30

Fuel cell stack array

#167
20200235411
2020-07-23

Fuel cell vehicle

#168
20200235407
2020-07-23

Fuel cell module, manufacturing method thereof, and connector

#169
20200194812
2020-06-18

Control method for fuel cell system to prevent freezing in air exhaust system

#170
20200185740
2020-06-11

Cell-monitoring connector and fuel cell having structure for detachably mounting the cell-monitoring connector thereon

#171
20200185735
2020-06-11

SYSTEM AND METHOD OF CONTROLLING OPERATION OF FUEL CELL

#172
20200185734
2020-06-11

VOLTAGE CONTROL METHOD FOR FUEL CELL STACK AND FUEL CELL SYSTEM FOR VEHICLE

#173
20200176792
2020-06-04

Electrical connector for fuel cell stack voltage monitoring

#174
20200168928
2020-05-28

Method for operating a fuel cell system and a fuel cell vehicle

#175
20200153008
2020-05-14

Fuel cell state determination method and fuel cell state determination apparatus

#176
20200144638
2020-05-07

Fuel cell system

#177
20200136159
2020-04-30

Method to control maximum current for a fuel cell

#178
20200119375
2020-04-16

Method and system for removing residual water in fuel cell stack

#179
20200112041
2020-04-09

Fuel cell system

#180
20200091527
2020-03-19

Processing method for fuel cell system, component detaching method, and fuel cell system

#181
20200067109
2020-02-27

Systems and methods for fuel-cell stack flow control with simultaneous load following

#182
20200044268
2020-02-06

REDOX FLOW BATTERY

#183
20200028192
2020-01-23

Fuel cell system and method for operating the same

#184
20200020964
2020-01-16

FUEL CELL STACK GROUNDING THROUGH AN IMPEDANCE CREATING ELEMENT

#185
20190393524
2019-12-26

Fuel cell system for modulating offset of hydrogen pressure sensor and method for modulating offset of hydrogen pressure sensor

#186
20190386323
2019-12-19

Method for detecting and lessening fuel starvation in fuel cell systems

#187
20190334184
2019-10-31

Method and control unit for conditioning a fuel cell stack

#188
20190312286
2019-10-10

Connecting element for electrically contact-connecting separator plates of a fuel cell stack

#189
20190288312
2019-09-19

Method and system for estimating available output of fuel cell

#190
20190288308
2019-09-19

Stop control method for fuel cell system

#191
20190267646
2019-08-29

Fuel cell system and method of controlling fuel cell

#192
20190260050
2019-08-22

Flow battery control method, flow battery control system and flow battery

#193
20190252702
2019-08-15

Aging device for fuel cell stack

#194
20190245227
2019-08-08

Method of diagnosing level sensor failure in fuel cell water trap and control unit using the same

#195
20190237784
2019-08-01

Anode bleed control in a fuel cell stack

#196
20190229355
2019-07-25

Method and apparatus for controlling water flooding failure in fuel cell dual-stack system

#197
20190221872
2019-07-18

Fuel cell vehicle

#198
20190214663
2019-07-11

Systems and methods for power generation using fuel cells

#199
20190207233
2019-07-04

Below freezing start-up method for fuel cell system

#200
20190198894
2019-06-27

Fuel cell system and vehicle

#201
20190190046
2019-06-20

Fuel cell system and control method of fuel cell system

#202
20190190045
2019-06-20

Method and system for diagnosing failure of temperature sensor for fuel cell

#203
20190190040
2019-06-20

System and method for MEA conditioning in a fuel cell

#204
20190181476
2019-06-13

Fuel cell thermal management system and control method of the same

#205
20190181465
2019-06-13

Fuel cell control method and control system

#206
20190173113
2019-06-06

Fuel cell system and fuel cell system control method

#207
20190173108
2019-06-06

Power supply device, apparatus, and control method

#208
20190165427
2019-05-30

Current bypass device for proton exchange membrane fuel cell system

#209
20190162790
2019-05-30

Fuel cell stack cell voltage sensor diagnostic

#210
20190148750
2019-05-16

Method for calculating voltage loss of fuel cell and system performing the same

#211
20190140294
2019-05-09

Fuel cell system and method of controlling the same

#212
20190140292
2019-05-09

System and method for controlling performance of fuel cell stack

#213
20190140291
2019-05-09

Fuel cell system and method of controlling the same

#214
20190140290
2019-05-09

Fuel cell system and method of controlling the same

#215
20190088960
2019-03-21

Control method and system of fuel cell system

#216
20190071952
2019-03-07

FUEL CELL APPARATUS AND METHOD FOR DOWNHOLE POWER SYSTEMS

#217
20190067718
2019-02-28

Fuel cell system and method of identifying power leakage area

#218
20190049522
2019-02-14

Method for determining critical operating states in a fuel cell stack

#219
20190049521
2019-02-14

Method for determining critical operating states in a fuel cell stack

#220
20190036138
2019-01-31

Fuel cell controller, fuel cell system and method of operation

#221
20190036137
2019-01-31

HEALTH MONITORING OF AN ELECTROCHEMICAL CELL STACK

#222
20190036132
2019-01-31

FUEL CELL SYSTEM

#223
20190020046
2019-01-17

Fuel cell system

#224
20190006683
2019-01-03

Fuel cell system and control method for fuel cell system

#225
20180375134
2018-12-27

Circuit arrangement for impressing an electrical signal into an electrochemical energy supply device

#226
20180375130
2018-12-27

APPARATUS AND METHOD FOR PREDICTING LIFE SPAN OF FUEL CELL, AND VEHICLE SYSTEM HAVING THE SAME

#227
20180375129
2018-12-27

Fuel cell system with anode degradation reduction control

#228
20180375120
2018-12-27

Fuel cell system and control method for fuel cell system

#229
20180375112
2018-12-27

Fuel cell module, manufacturing method thereof, and connector

#230
20180358636
2018-12-13

Control method for fuel cell system and fuel cell system

#231
20180351185
2018-12-06

METHOD OF CONTROLLING OPERATION OF FUEL CELL

#232
20180331376
2018-11-15

Fuel cell system and control method of fuel cell system

#233
20180323455
2018-11-08

Regulation of a fuel cell assembly

#234
20180316029
2018-11-01

Fuel cell architectures, monitoring systems, and control logic for characterizing fluid flow in fuel cell stacks

#235
20180309146
2018-10-25

Vehicle with fuel cell system mounted thereon

#236
20180301724
2018-10-18

Fuel cell system and control method therefor

#237
20180294494
2018-10-11

Fuel cell system

#238
20180294492
2018-10-11

Fuel cell vehicle control method and fuel cell vehicle control apparatus

#239
20180287174
2018-10-04

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