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:
Jan. 13, 2026
Filed:
Feb. 27, 2023
Honda Motor Co., Ltd., Tokyo, JP;
Ryota Kitamoto, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A ground fault determination system includes an acquisition unit that acquires the degree of deterioration of a plurality of fuel cell stacks connected in parallel with each other and connected to an inverter, a ground fault detection unit that detects insulation resistance between the inverter and the plurality of fuel cell stacks, a first determination unit that determines, when the deterioration of each fuel cell stack has not yet progressed, whether there is a ground fault with all the fuel cell stacks all at once, and a second determination unit that determines in turn, when the deterioration of at least one fuel cell stack has progressed, whether there is a ground fault with each fuel cell stack.