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:
Aug. 19, 2025
Filed:
Sep. 21, 2022
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Yeh-Hung Lai, Oakland, MI (US);
Jeffrey A. Rock, Rochester Hills, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/248 (2016.01);
U.S. Cl.
CPC ...
H01M 8/248 (2013.01); H01M 2250/20 (2013.01);
Abstract
A method, fuel cell system and vehicle for maintaining compression via re-compression is provided. By recovering fuel cell stacks of the fuel cell system after a pre-determined time of operation and performing re-compression on each of the recovered fuel cell stacks, power generation capacity, active area pressure and seal force is recovered to address increased contact resistance and loss of fuel cell system power generation capacity as well as decreased seal force and increased risk of reactant gas and coolant leak.