The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Aug. 21, 2018
GM Global Technology Operations Llc, Detroit, MI (US);
Biju Edamana, Troy, MI (US);
Sergio E. Garcia, Commerce Township, MI (US);
Jeffrey J. Gagliardo, Clarkston, MI (US);
J. M. Ellenberger, Huntington Woods, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Systems, methods, and devices which optimize fuel-cell stack airflow control are described. According to aspects of the present disclosure, actuation of at least one cathode-flow actuator is initialized to an initial state based on a desired oxygen flowrate to operate the fuel-cell stack in a voltage-controlled mode, a stack current produced by the fuel-cell stack is determined that corresponds to operation at the actuation of the cathode-flow actuators, a flowrate of oxygen exiting the fuel-cell stack is calculated based on the stack current, the flowrate of oxygen exiting the fuel-cell stack is compared to the desired oxygen flowrate exiting the fuel-cell stack, and actuation of at least one of the cathode-flow actuators is modified in response to the flowrate of oxygen being different from the desired oxygen flowrate. The modified actuation reduces the difference between the desired oxygen flowrate and the flowrate of oxygen exiting the fuel-cell stack.