Abstract: A bipolar conductive plate for a fuel cell structure, the plate having a network of fluid circulation channels in the form of a succession of undulations with narrowed portions preferably distributed regularly in order to reduce the stratification phenomena.

Abstract: A purging circuit for purging an anodic compartment of a cell of a fuel cell, this circuit including: a capacity, forming a related volume at least equal to 500 ml, for containing and homogenising a recovery gas, including an inlet and an outlet; a first nonreturn valve to prevent the recovery gas from returning through the outlet and allowing gas to flow from the first outlet to an inlet of the compartment; a second nonreturn valve to prevent gas from being discharged from the capacity through the inlet; a pressure sensor able to measure the pressure of a fluid present in the circuit; a valve controlling the flow of a supply gas to and from the compartment as a function of data of the sensor and allowing gas to flow from the first nonreturn valve to the inlet of the compartment.

Abstract: The invention relates to a supply circuit of the cathode (250) of at least one electrochemical cell (200) of the PEMFC type, which further comprises a membrane (290) separating an anode (210) and said cathode (250), with this circuit comprising: a supply channel (220) comprising an inlet (282) and making it possible to convey a fluid (90) in contact with the cathode (250); a discharge channel (280) that makes it possible to remove gases from the cell, a recirculation channel (100, 100?), comprising: a first opening (102) connected to the outlet (284) of the discharge channel (280); a second opening (104) connected to the inlet (282) of the supply channel (280), by the intermediary of a connector (80); a third opening (106) and means for removing (140) that allow at least one portion of the fluid (90) to be removed from the recirculation channel by the third opening (106), the recirculation channel (100, 100?) and/or the supply channel further comprising at least one compressor (C1, C2), which makes it p

Abstract: A purging circuit for purging an anodic compartment of a cell of a fuel cell, this circuit including: a capacity, forming a related volume at least equal to 500 ml, for containing and homogenising a recovery gas, including an inlet and an outlet; a first nonreturn valve to prevent the recovery gas from returning through the outlet and allowing gas to flow from the first outlet to an inlet of the compartment; a second nonreturn valve to prevent gas from being discharged from the capacity through the inlet; a pressure sensor able to measure the pressure of a fluid present in the circuit; a valve controlling the flow of a supply gas to and from the compartment as a function of data of the sensor and allowing gas to flow from the first nonreturn valve to the inlet of the compartment.