Hydrogen leak sensing device and method for fuel cell vehicle
US-2023187666-A1 · Jun 15, 2023 · US
Fuel cell ship
US12502967B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12502967-B2 |
| Application number | US-202217830075-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 1, 2022 |
| Priority date | Jun 2, 2021 |
| Publication date | Dec 23, 2025 |
| Grant date | Dec 23, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is stopped.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A fuel cell ship for propelling a hull by using electric power supplied by a fuel cell configured to generate electric power through an electrochemical reaction of fuel, the fuel cell ship comprising: a compartment including an emission source of the fuel; a first detector arranged in the compartment, the first detector configured to detect the fuel; a ventilation device configured to employ forced ventilation inside the compartment; and a second detector arranged around the ventilation device, the second detector configured to detect the fuel, wherein, based on detection by the first detector that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is configured to be stopped, and wherein the ventilation device is activated when the second detector is switched on. 2 . The fuel cell ship according to claim 1 , comprising: a plurality of compartments including the compartment, and based on the concentration of the fuel being equal to or greater than the first threshold value in any of the plurality of compartments, a power supply to a second non-explosion-proof device in a second compartment of the plurality of compartments having a ventilation path connected to the compartment is configured to be stopped. 3 . The fuel cell ship according to claim 1 , comprising: a plurality of compartments including the compartment, and based on the concentration of the fuel being equal to or greater than the first threshold value in one of the plurality of compartments, a power supply to any non-explosion-proof devices in all of the plurality of compartments except for the compartment is configured to be stopped. 4 . The fuel cell ship according to claim 1 , wherein the ventilation device is configured to be stopped based on detection, by the second detector, of a concentration of the fuel being equal to or greater than a second threshold value. 5 . The fuel cell ship according to claim 1 , wherein the compartment includes a fuel cell compartment installed therein with the fuel cell.
Assignees
Inventors
Classifications
Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts · CPC title
Ventilation; Air-conditioning · CPC title
the power plant using fuel cells for energy supply or accumulation, e.g. for buffering photovoltaic energy · CPC title
using sensors, e.g. pressure sensors, strain gauges or accelerometers · CPC title
Arrangement of bulkheads, e.g. defining cargo spaces · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12502967B2 cover?
- An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in…
- Who is the assignee on this patent?
- Yanmar Holdings Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60L3/0053. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 23 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).