US 12,249,742 B2
Method for operating a fuel cell system, and fuel cell system
Helerson Kemmer, Vaihingen (DE); Pere Antoni Pastor Nigorra, Tuebingen (DE); Joerg Heyse, Besigheim (DE); and Ralf Brandenburger, Erdmannhausen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/763,878
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Sep. 16, 2020, PCT No. PCT/EP2020/075816
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/058343, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10 2019 214 711.9 (DE), filed on Sep. 26, 2019.
Prior Publication US 2022/0352531 A1, Nov. 3, 2022
Int. Cl. H01M 8/04 (2016.01); H01M 8/04007 (2016.01); H01M 8/04082 (2016.01); H01M 8/04089 (2016.01); H01M 8/04119 (2016.01); H01M 8/04302 (2016.01); H01M 8/04303 (2016.01); H01M 8/04828 (2016.01)
CPC H01M 8/04171 (2013.01) [H01M 8/04037 (2013.01); H01M 8/04097 (2013.01); H01M 8/04201 (2013.01); H01M 8/04302 (2016.02); H01M 8/04303 (2016.02); H01M 8/04835 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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).