Fuel cell comprising at least two stacked printed circuit boards with a plurality of interconnected fuel cell units
US-2018233765-A1 · Aug 16, 2018 · US
Fuel cell and fuel cell separator
US11973251B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11973251-B2 |
| Application number | US-202117443907-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 28, 2021 |
| Priority date | Sep 2, 2016 |
| Publication date | Apr 30, 2024 |
| Grant date | Apr 30, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A fuel cell is provided with: a membrane electrode assembly (MEA); and a cathode-side separator assembled to the MEA, the cathode-side separator including first passages on a first surface of the cathode-side separator on a side closer to the MEA, and second passages on a second surface of the cathode-side separator on an opposite side, the first and second passages allowing oxidant gas to flow through the first and second passages, respectively. The first passages include first recessed portions on the first surface so as to extend from one end of the cathode-side separator to the other end, the second passages include second recessed portions on the second surface so as to extend from the one end to the other end and to be arranged alternately with the first recessed portions, and a penetration hole on a bottom face of the second recessed portion penetrating through the cathode-side separator.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell comprising: a membrane electrode assembly; and a cathode-side separator assembled to the membrane electrode assembly, the cathode-side separator including first passages provided on a first surface of the cathode-side separator on a side closer to the membrane electrode assembly, the first passages allowing oxidant gas to flow through the first passages, and second passages provided on a second surface of the cathode-side separator on a side opposite to the membrane electrode assembly across the first surface of the cathode-side separator, the second passages allowing oxidant gas to flow through the second passages, wherein the first passages include first recessed portions provided on the first surface so as to extend from one end of the cathode-side separator to an other end, the second passages include second recessed portions provided on the second surface so as to extend from the one end of the cathode-side separator to the other end and to be arranged alternately with the first recessed portions, a portion defining a penetration hole penetrating through the cathode-side separator is provided on a bottom face of the second recessed portion constituting the second passage, and a width of a part of the second passage in which the portion defining the penetration hole is provided is wider than a width of a part of the second passage in which the portion defining the penetration hole is not provided. 2. A fuel cell separator to be assembled to a membrane electrode assembly, the fuel cell separator comprising: first recessed portions provided on one surface so as to extend from one end of the fuel cell separator to an other end; and second recessed portions provided on the other surface so as to extend from the one end of the fuel cell separator to the other end and to be arranged alternately with the first recessed portions, the second recessed portions each having a bottom face provided with a portion defining a penetration hole penetrating through the fuel cell separator, wherein a width of a part of the second recessed portion in which the portion defining the penetration hole is provided is wider than a width of a part of the second recessed portion in which the portion defining the penetration hole is not provided.
Assignees
Inventors
Classifications
- H01M8/1004Primary
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
- H01M8/0258Primary
characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title
- H01M8/026Primary
characterised by grooves, e.g. their pitch or depth · CPC title
with both reactants being gaseous or vaporised (H01M8/12 takes precedence) · CPC title
consisting of layers of polymers with at least one layer being ionically conductive · CPC title
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- What does patent US11973251B2 cover?
- A fuel cell is provided with: a membrane electrode assembly (MEA); and a cathode-side separator assembled to the MEA, the cathode-side separator including first passages on a first surface of the cathode-side separator on a side closer to the MEA, and second passages on a second surface of the cathode-side separator on an opposite side, the first and second passages allowing oxidant gas to flow…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1004. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 30 2024 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).