US 12,438,169 B2
Diagnostic system for condition-based maintenance of fuel cell filters
Markus Antrack, Riesa (DE); and De-Niang Maria Peymandar, Moenchengladbach (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Appl. No. 17/606,495
Filed by Siemens Mobility GmbH, Munich (DE)
PCT Filed Apr. 23, 2020, PCT No. PCT/EP2020/061325
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/216838, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10 2019 206 009.9 (DE), filed on Apr. 26, 2019.
Prior Publication US 2022/0209264 A1, Jun. 30, 2022
Int. Cl. H01M 8/0668 (2016.01); B60H 1/00 (2006.01); H01M 8/04664 (2016.01); H01M 8/0662 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/04686 (2013.01) [B60H 1/00278 (2013.01); B60H 1/00564 (2013.01); H01M 8/0668 (2013.01); H01M 8/0675 (2013.01); H01M 8/0687 (2013.01); H01M 2008/1095 (2013.01); H01M 2250/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A diagnostic system for a filter of a fuel cell, the diagnostic system comprising:
a supply air duct for guiding a supply air flow toward the fuel cell, the filter being disposed in said supply air duct; and
a diagnostic arrangement disposed in said supply air duct after the filter in a flow direction of the supply air flow, said diagnostic arrangement configured to determine a loading of the filter with at least one predefined substance, said diagnostic arrangement including at least one indicator for indicating a loading of said at least one indicator with the at least one predefined substance; and
at least one optical detector disposed in said supply air duct downstream of said diagnostic arrangement for optically recording an indicator reaction of said at least one indicator.