ClassID:

213494

H01M8/04529 - 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; Humidity; Ambient humidity; Water content of the electrolyte

Recent Application in this class:
#1
20260128332
2026-05-07

METHOD AND SYSTEM FOR CONTROLLING WATER BALANCE IN METAL-AIR ELECTROCHEMICAL CELLS

#2
20240332575
2024-10-03

Method and System for Dynamically Modifying Fuel Cell Stack Current to Manage Fuel Cell Membrane Hydration

#3
20240030478
2024-01-25

METHOD AND SYSTEM FOR CONTROLLING OPERATION OF FUEL CELL

#4
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

#5
20220263107
2022-08-18

Method and system for examining a fuel cell by means of a cyclic voltammetric measurement

#6
20220255096
2022-08-11

DETERMINATION DEVICE AND METHOD FOR CALCULATING A MOISTURE VALUE IN A FUEL CELL SYSTEM

#7
20200335811
2020-10-22

Method and system for controlling operation of fuel cell

#8
20200185801
2020-06-11

Method for producing an electrolyte for a metal air battery

#9
20200006786
2020-01-02

Separator, and fuel cell stack comprising the same

#10
20190237779
2019-08-01

Fuel cell system and fuel cell vehicle

#11
20190181465
2019-06-13

Fuel cell control method and control system

#12
20190173113
2019-06-06

Fuel cell system and fuel cell system control method

#13
20190173107
2019-06-06

Fuel cell system and control method for fuel cell system

#14
20190051917
2019-02-14

Control device for fuel cell system

#15
20180358636
2018-12-13

Control method for fuel cell system and fuel cell system

#16
20180248208
2018-08-30

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

#17
20180219239
2018-08-02

Fuel cell system

#18
20180196108
2018-07-12

Method and device for observing a state of a fuel-cell electrochemical system

#19
20180175420
2018-06-21

Heat exchange device for cooling water of fuel cell and fuel cell system comprising the same

#20
20180166719
2018-06-14

System and method for controlling fuel cell vehicle

#21
20180126865
2018-05-10

Technique of diagnosing fuel cell stack

#22
20180053952
2018-02-22

State detection device and method for fuel cell

#23
20180048006
2018-02-15

Fuel cell internal state detection system and state detection method

#24
20180048003
2018-02-15

Fuel cell system and control method for fuel cell system

#25
20170352895
2017-12-07

System for measuring the hygrometry of an ion exchange membrane in a fuel cell

#26
20170346106
2017-11-30

Device intended to generate electricity from a planar fuel cell cooled by air flow

#27
20170317365
2017-11-02

METHOD FOR OPERATING A FUEL CELL SYSTEM

#28
20170187053
2017-06-29

Fuel cell system and control method for fuel cell system

#29
20170170500
2017-06-15

Method and system for diagnosing state of fuel cell stack

#30
20170104231
2017-04-13

Fuel cell system and performance improvement method of fuel cell system

#31
20170062851
2017-03-02

FUEL CELL STACK END CELLS WITH IMPROVED DIAGNOSTIC CAPABILITIES

#32
20170018791
2017-01-19

Fuel cell system

#33
20170012305
2017-01-12

Fuel cell system

#34
20160380289
2016-12-29

Fuel cell system including water content estimation

#35
20160372768
2016-12-22

Method for cold-start of fuel cell stack

#36
20160254552
2016-09-01

Fuel cell separator and fuel cell stack and reactant gas control method thereof

#37
20160240872
2016-08-18

Fuel cell system

#38
20160197361
2016-07-07

Fuel cell separator and fuel cell stack and reactant gas control method thereof

#39
20160141688
2016-05-19

Fuel cell system and dryness degree acquisition method

#40
20160036075
2016-02-04

Device for adjusting hollow fiber membrane density for humidification device of fuel cell

#41
20150357659
2015-12-10

Fuel cell system and fuel cell powered vehicle

#42
20150349360
2015-12-03

Fuel cell system and control method therefor

#43
20150244013
2015-08-27

Control device of fuel cell, fuel cell system and control method of fuel cell

#44
20150162629
2015-06-11

Fuel cell system

#45
20150155574
2015-06-04

Driving control method and system of fuel cell system

#46
20150099203
2015-04-09

Electronic equipment provided with battery check device

#47
20150056531
2015-02-26

Fuel cell system

#48
20140349201
2014-11-27

Fuel cell assembly and method of control

#49
20140335430
2014-11-13

Fuel cell system and operating method therefor

#50
20140186735
2014-07-03

Method of operating fuel cell system

#51
20140178778
2014-06-26

Fuel cell system

#52
20140176143
2014-06-26

Method for generating injected current of fuel cell stack

#53
20140154603
2014-06-05

Fuel cell apparatus and fuel cell system

#54
20140120441
2014-05-01

Method for determining an average cell voltage for fuel cells

#55
20140093801
2014-04-03

Automated cold storage protection for a fuel cell system

#56
20140080024
2014-03-20

Electric power supply system

#57
20130330646
2013-12-12

Fuel cell system

#58
20130157161
2013-06-20

Fuel cell system and control method for fuel cell system

#59
20130065150
2013-03-14

Fuel cell system

#60
20130040217
2013-02-14

Fuel cell system and control method for the same

#61
20130035898
2013-02-07

Utilization of HFR-based cathode inlet RH model in comparison to sensor feedback to determine failed water vapor transfer unit and utilize for a diagnostic code and message

#62
20120189925
2012-07-26

Fuel cell system and method of operating fuel cell system

#63
20120064423
2012-03-15

Dynamic voltage suppression in a fuel cell system

#64
20120015263
2012-01-19

Method and apparatus for determining humidity states of individual cells in a fuel cell, method and apparatus for controlling humidity states of individual cells in a fuel cell, and a fuel cell system

#65
20110311889
2011-12-22

Fuel cell system

#66
20110274993
2011-11-10

Fuel cell system

#67
20110274992
2011-11-10

Water content estimation apparatus for fuel cell and fuel cell system

#68
20110262822
2011-10-27

Controls giving −25° C. freeze start capability to a fuel cell system

#69
20110250519
2011-10-13

Fuel cell system

#70
20110217611
2011-09-08

Fuel cell system

#71
20110200896
2011-08-18

Fuel cell system and operating method of a fuel cell

#72
20110159393
2011-06-30

Vehicle fuel cell cooling system

#73
20110104580
2011-05-05

Fuel cell system

#74
20110091783
2011-04-21

Electronic equipment provided with battery check device

#75
20110014547
2011-01-20

Method for storing a fuel cell at freezing temperature

#76
20100291446
2010-11-18

Fuel cell system

#77
20100233560
2010-09-16

FUEL CELL SYSTEM

#78
20100227242
2010-09-09

Fuel cell system, and operation method for fuel cell

#79
20100209808
2010-08-19

Fuel cell and electrode powder constituting the catalytic layer thereof

#80
20100190071
2010-07-29

Fuel cell system and operating method therefor

#81
20100183932
2010-07-22

Humidity regulation fuel cell

#82
20100167144
2010-07-01

Fuel cell system and operation method thereof

#83
20100136440
2010-06-03

FUEL CELL APPARATUS AND FUEL CELL SYSTEM

#84
20100081022
2010-04-01

Fuel cell system

#85
20100009225
2010-01-14

Fuel cell system and mobile body

#86
20090258257
2009-10-15

Fuel cell system having wet-state determination

#87
20090191437
2009-07-30

Fuel cell system

#88
20090169930
2009-07-02

Fuel cell separator and fuel cell stack and reactant gas control method thereof

#89
20090117419
2009-05-07

DRY-STATE DETECTING METHOD AND ELECTRONIC DEVICE SYSTEM FOR FUEL CELL, AND POWER CONTROL METHOD THEREFOR

#90
20090081489
2009-03-26

On-line system identification and control of fuel cell humidification via HFR measurements

#91
20090075127
2009-03-19

METHOD FOR MEASURING HIGH-FREQUENCY RESISTANCE OF FUEL CELL IN A VEHICLE

#92
20090035628
2009-02-05

Fuel cell and fuel cell apparatus with a switch responsive to an amount of water contained in the electrolyte membrane

#93
20090011302
2009-01-08

Fuel Cell System

#94
20080299423
2008-12-04

FUEL CELL SYSTEMS WITH MAINTENANCE HYDRATION

#95
20080166609
2008-07-10

Fuel cell system

#96
20080145714
2008-06-19

Fuel Cell System and Related Method

#97
20080050621
2008-02-28

Managing MEA hydration cycling life

#98
20080050619
2008-02-28

Fuel cell life counter and method of managing remaining life

#99
20080042654
2008-02-21

Fuel cell diagnostic apparatus and diagnostic method

#100
20080038594
2008-02-14

Method of operating a fuel cell stack by monitoring membrane hydration

#101
20070184317
2007-08-09

Fuel cell system and fuel cell control method

#102
20070141414
2007-06-21

Fuel cell having micro sensors

#103
20070122662
2007-05-31

Method of operating a fuel cell stack

#104
20070099046
2007-05-03

Electronic equipment provided with voltage check unit

#105
20070042243
2007-02-22

Apparatus and method for controlling a fuel cell using the rate of voltage recovery

#106
20060263653
2006-11-23

Management via dynamic water holdup estimator in a fuel cell

#107
20060222924
2006-10-05

Prevention of flooding of fuel cell stack

#108
20060199270
2006-09-07

Optical fiber based fluorescence sensor for in-situ measurement and control of fuel cells

#109
20060121322
2006-06-08

Systems and methods for fuel cell shutdown

#110
20050196660
2005-09-08

Method for measuring water distribution between conductive members, cell for measuring water distribution in polymer membrane and apparatus for measuring water distribution in polymer membrane

#111
20050164049
2005-07-28

Storing water in substrates for frozen, boot-strap start of fuel cells

#112
20050153181
2005-07-14

Fuel cell system with a control unit

#113
20050150276
2005-07-14

IN-SITU MEASUREMENT OF WATER OF HYDRATION IN POLYELECTROLYTE MEMBRANE (PEM) OF FUEL CELL