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AssigneeRobert Bosch GmbH
InventorsHelerson Kemmer, Pere Antoni Pastor Nigorra, Joerg Heyse, Ralf Brandenburger
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The invention relates to a method for operating a fuel cell system, in particular a PEM fuel cell system, in which an anode gas is supplied to an anode (1) of a fuel cell via a supply path (2), and is fed back via a recirculation path (3) connected to the anode (1), wherein hydrogen is used as the anode gas. According to the invention, during the start up of the fuel cell system, the anode gas is supplied to a drying device (4), in particular an adsorber, via at least one normally open valve (8, 9, 10), and water is extracted from the anode gas using the drying device (4). The invention also relates to a fuel cell system, in particular a PEM fuel cell system, which is suitable for carrying out the method.
A method for operating a fuel cell system in which an anode gas is supplied to an anode (1) of a fuel cell via a supply path (2), and the anode gas from the anode (1) is recirculated via a recirculation path (3) connected to the anode (1), wherein hydrogen is used as the anode gas, wherein, during a starting of the fuel cell system, the anode gas is supplied from the supply path (2) to a drying device (4) via at least one normally open valve (8, 9, 10), and water is extracted from the anode gas using the drying device (4), wherein an inlet of the recirculation path (3) and an outlet of the recirculation path (3) each extend from the supply path (2) such that the recirculation path (3) is upstream of the anode (1).
A fuel cell system comprising at least one fuel cell having an anode, which is connected on an inlet side to a supply path (2) for supplying an anode gas and on an outlet side to a recirculation path (3) for recirculating the anode gas, wherein a drying device (4) is connected to the supply path (2) via at least one normally open valve (8, 9, 10), wherein the drying device is arranged in parallel with the anode (1) in a path that extends from the supply path (2) to the recirculation path (3), bypassing the anode (1).
Dependencies are inferred from the claim text.