Title (en)

METHOD FOR CONTROLLING THE METHANOL CONCENTRATION IN DIRECT METHANOL FUEL CELLS

Title (de)

VERFAHREN ZUR REGELUNG DER METHANOLKONZENTRATION IN DIREKT-METHANOL-BRENNSTOFFZELLEN

Title (fr)

PROCEDE DE REGULATION DE LA CONCENTRATION EN METHANOL DANS DES PILES A COMBUSTIBLE DIRECTES AU METHANOL

Publication

EP 1412999 A2 20040428 (DE)

Application

EP 02742629 A 20020712

Priority

• EP 02742629 A 20020712
• CH 0200382 W 20020712
• EP 01810741 A 20010727

Abstract (en)

[origin: EP1280218A1] Process for regulating the methanol concentration of a direct methanol fuel cell system having a fuel cell and a separate methanol reservoir comprises varying a first system parameter; and introducing methanol from a methanol reservoir depending on the resulting voltage from the fuel solution. An Independent claim is also included for a process for determining the methanol concentration in a direct methanol fuel cell. Preferred Features: Further system parameters are investigated before varying the first system parameter. A gas flow is increased during the variation. The current strength is varied in a determined region and a current-voltage characteristic line is acquired.

IPC 1-7

H01M 8/04

IPC 8 full level

H01M 8/04186 (2016.01); H01M 8/04119 (2016.01); H01M 16/00 (2006.01)

CPC (source: EP KR US)

H01M 8/04 (2013.01 - KR); H01M 8/04186 (2013.01 - EP US); H01M 8/04194 (2013.01 - EP US); H01M 16/006 (2013.01 - EP US); H01M 8/04156 (2013.01 - EP US); Y02E 60/10 (2013.01 - EP); Y02E 60/50 (2013.01 - EP)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

EP 1280218 A1 20030129; EP 1412999 A2 20040428; JP 2004537150 A 20041209; KR 20040021651 A 20040310; US 2004247954 A1 20041209; WO 03012904 A2 20030213; WO 03012904 A3 20030925

DOCDB simple family (application)

EP 01810741 A 20010727; CH 0200382 W 20020712; EP 02742629 A 20020712; JP 2003517972 A 20020712; KR 20047001104 A 20020712; US 48513704 A 20040428