Menetelmä ja järjestelmä käänteisvirran aiheuttaman rappeutumisen estämiseksi polttokennoissa; Förfarande och system för att eliminera förfall genom bakström i bränsleceller

Translated title of the contribution: Method and system for eliminating reverse current decay in fuel cells

Jari Ihonen (Inventor)

Research output: PatentPatent

Abstract

The invention relates to a system and a method for eliminating reverse current decay in the fuel cells. According to the invention, the system comprises
a fuel cell having an anode and a cathode;
a fuel feed system for supplying the anode of the fuel cell with fuel and forming an anode system;
a bypass line fitted in parallel and in flow connection with said anode system and capable of circulating fuel past the anode;
an oxygen reduction unit; and
a pressure unit for circulating gas in at least part of said anode system and said bypass line.
The bypass line is adapted to receive and circulate a flow of hydrogen during a fuel cell shutdown in order to mix the hydrogen with any oxygen present in the anode system, and to remove the oxygen from the anode system in said oxygen reduction unit by catalytic conversion. A control unit for receiving sensing signals representative of the state of the oxygen reduction process and controlling the amount of hydrogen passing through the system in response to said sensor is also described

Patent family as of 23.11.2021
EP3161888 A1 20170503 EP20150814316 20150629      
EP3161888 A4 20171122 EP20150814316 20150629      
FI125775 B 20160215 FI20140005635 20140630      
FI20145635 A 20151231 FI20140005635 20140630      
JP2017527952 T2 20170921 JP20160575158T 20150629      
JP6506783 B2 20190424 JP20160575158T 20150629      
US10483569 BB 20191119 US20150320824 20150629      
US2017200959 AA 20170713 US20150320824 20150629      
WO16001487 A1 20160107 WO2015FI50477 20150629

Link to current patent family on right 

Translated title of the contributionMethod and system for eliminating reverse current decay in fuel cells
Original languageMultiple
Patent numberFI20145635
Priority date30/06/14
Publication statusPublished - 31 Dec 2015
MoE publication typeH1 Granted patent

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