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.

Date of Patent:
Oct. 06, 2026

Filed:

May. 14, 2024
Applicants:

Hyundai Motor Company, Seoul, KR;

Kia Corporation, Seoul, KR;

Inventors:

Jun Su Lee, Gwangju-si, KR;

Jong Gyun Kim, Yongin-si, KR;

Min Gu Park, Hwaseong-si, KR;

Assignees:

HYUNDAI MOTOR COMPANY, Seoul, KR;

KIA CORPORATION, Seoul, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/0438 (2016.01); H01M 8/04119 (2016.01); H01M 8/04537 (2016.01); H01M 8/04664 (2016.01); H01M 8/04746 (2016.01);
U.S. Cl.
CPC ...
H01M 8/04686 (2013.01); H01M 8/04126 (2013.01); H01M 8/04395 (2013.01); H01M 8/04559 (2013.01); H01M 8/04753 (2013.01);
Abstract

A humidifier leak diagnosis system for a fuel cell system includes a fuel cell stack. The humidifier leak diagnosis system also includes an air supply system including at least one of an air compressor, a humidifier, an air cutoff valve, or an air pressure control valve. The humidifier leak diagnosis system additionally includes a controller configured to enter a humidifier leak diagnosis mode based on an inlet air pressure of the fuel cell stack. The controller is also configured to determine whether or not humidifier leak has been generated based on an output or an output voltage of the fuel cell stack generated through adjustment of at least one of an opening degree of the air cutoff valve or an opening degree of the air pressure control valve in humidifier leak diagnosis.


Find Patent Forward Citations

Lee, Jun. (2026). Humidifier leak diagnosis system and method for a fuel cell system (U.S. Patent No. 12755993). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12755993

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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