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The fuel cell

A fuel cell and separator technology, applied in fuel cells, fuel cell parts, battery pack parts, etc., can solve problems such as permeability deterioration, reaction fluid fluidity deterioration, membrane damage, etc.

Active Publication Date: 2019-10-29
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the channel pitch is large, stress may concentrate on the flat portion 42 where the separator and the GDL 12 contact each other, so the surface pressure cannot be applied quite uniformly
Therefore, the porous structure of the GDL 12 may be damaged, thereby deteriorating the permeability of the GDL 12, and the diffusivity of the reaction gas and the discharge performance of the generated water may also be degraded.
In addition, when the stress in the channel portion 41 is reduced, the GDL 12 may permeate into the channel portion 41, thereby deteriorating the fluidity of the reaction fluid.
[0005] In addition, when the structure of the GDL 12 in the flat part 42 is damaged, carbonized fibers may permeate into the membrane, thereby causing the membrane to be damaged.
In addition, non-uniform conductivity may occur

Method used

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  • The fuel cell
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Embodiment Construction

[0017] The terminology used herein is for describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that when terms such as "comprising" and / or "comprising" are used in this specification, it is intended to indicate the existence of the features, integers, steps, operations, elements and / or components, but not to exclude one or more The presence or addition of other features, integers, steps, operations, elements, components, and / or combinations thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0018] Hereinafter, a fuel cell according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

[0019] figure 2 An exemplary fuel ce...

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Abstract

The present invention provides a fuel cell comprising: a catalyst layer having hydrogen or air introduced through a first surface and a second surface of the catalyst layer; a first separator arranged on a first side of the catalyst layer and comprising a plurality of first a passage for flowing the first reactant in the hydrogen gas and air; and a second partition arranged on the second side of the catalyst layer and including a plurality of second passages arranged on the same side as the first passage In the vertical direction, each of the second channels includes a plurality of ventilation holes, so that the hydrogen and the second reactants in the air flow in a direction perpendicular to the second channels.

Description

technical field [0001] The present invention relates to a fuel cell, and more specifically to the following fuel cell, which can improve the diffusivity of reaction gas and make the surface pressure of the reaction surface more uniform by changing the channel structure of the fuel cell separator. Background technique [0002] Generally, a metal separator is applied to a fuel cell, and the metal separator has channels for reactants and cooling water, a pair of gas diffusion layers (GDL) 12 for facilitating the diffusion of reactants, and a membrane electrode assembly (MEA) 11 , wherein the chemical reaction takes place in a membrane electrode assembly (MEA) 11 , and the assembly is located between a pair of gas diffusion layers (GDL) 12 . like figure 1 As shown, in the metal separator, a channel portion 41 and a land portion 42 in contact with the GDL 12 are repeatedly formed, wherein in the channel portion 41, the reaction gas flows in the same direction as the flow directi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0202H01M2/14
CPCH01M8/1004H01M8/0247H01M8/0258Y02E60/50H01M8/0267H01M8/0271H01M8/026
Inventor 阵相文梁酉彰
Owner HYUNDAI MOTOR CO LTD