US 12,294,127 B2
System and methods for determining a stack current request based on fuel cell operational conditions
Jacob Bryant, Portland, OR (US); John Robey, Clackamas, OR (US); Troy Fox, Tigard, OR (US); Chenyao Chen, Portland, OR (US); Tabassum Hossainy, Portland, OR (US); and David Brisbine, Sandy, OR (US)
Assigned to Hyster-Yale Materials Handling, Inc., Fairview, OR (US)
Filed by Hyster-Yale Materials Handling, Inc., Fairview, OR (US)
Filed on Apr. 5, 2024, as Appl. No. 18/627,793.
Application 18/627,793 is a continuation of application No. 17/842,566, filed on Jun. 16, 2022, granted, now 11,990,656.
Claims priority of provisional application 63/234,638, filed on Aug. 18, 2021.
Claims priority of provisional application 63/222,321, filed on Jul. 15, 2021.
Claims priority of provisional application 63/211,087, filed on Jun. 16, 2021.
Prior Publication US 2024/0258544 A1, Aug. 1, 2024
Int. Cl. H01M 8/04 (2016.01); H01M 8/0432 (2016.01); H01M 8/04858 (2016.01)
CPC H01M 8/0491 (2013.01) [H01M 8/04358 (2013.01); H01M 2250/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for requesting a current magnitude from a fuel cell, the method comprising:
requesting a current magnitude from the fuel cell, where the current magnitude requested is based at least on a state of charge of a battery and is performed in a stepwise manner among a plurality of current magnitude steps, where each current magnitude step includes a debounce range with respect to at least one other current magnitude step;
outputting by the fuel cell the requested current magnitude;
determining an average current output by the fuel cell over a time period; and
modifying a current magnitude associated with one of the current magnitude steps based on the average current.