US 12,113,252 B2
Detecting a fault condition in a fuel cell system
Bob L. Mackey, San Jose, CA (US); Valery Miftakhov, San Carlos, CA (US); Callum Woods Larson Ritchie, Gilroy, CA (US); Christian Bailey, Palo Alto, CA (US); and Kevin-Patxi Le Bras, Santa Cruz, CA (US)
Assigned to ZEROAVIA, INC., Hollister, CA (US)
Filed by ZeroAvia, Inc., Hollister, CA (US)
Filed on May 13, 2022, as Appl. No. 17/744,471.
Prior Publication US 2023/0369616 A1, Nov. 16, 2023
Int. Cl. H01M 8/04664 (2016.01)
CPC H01M 8/04671 (2013.01) [H01M 2250/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A fuel cell system comprising at least one fuel cell having an external surface; and
one or more sensors external to the fuel cell surface, configured for detecting a change in the external surface of said fuel cell indicative of a fault condition, wherein the one or more sensors are selected from the group consisting of an ultrasound transducer, and a combination of a mass spectrometer sensor and at least one ionizing beam source directed toward the fuel cell.