KR-102961400-B1 - SEPARATOR APPARATUS FOR FUEL CELL

Abstract

The present invention relates to a separator plate device for a fuel cell, characterized by comprising a body portion, a channel portion provided in the body portion and guiding the flow of fluid, a gasket portion spaced apart from the channel portion, and a flow limiting portion that restricts the flow of fluid through the space between the channel portion and the gasket portion.

Inventors

• 박지용
• 구영모
• 김명환
• 신동윤
• 최영진
• 임진혁
• 박경훈

Assignees

• 한국자동차연구원

Dates

Publication Date

20260511

Application Date

20230531

Claims (13)

1. Body part; A channel portion provided in the above body portion and guiding the flow of fluid; A gasket portion spaced apart from the above-mentioned channel portion; and A flow limiting member that restricts fluid flow through the space between the channel portion and the gasket portion; is included. The above channel portion comprises a first channel portion disposed on a first surface of the body portion and having one or more first channels extending along a first direction; and land portions disposed on both sides of the first channel portion; including The above gasket portion comprises a first gasket disposed on the first surface and spaced apart from the land portion along a second direction intersecting the first direction; The above flow limiting portion includes a first flow limiting member disposed between the land portion and the first gasket; A separator for a fuel cell characterized in that the height of the first flow-limiting member is lower than the height of the first gasket.
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4. In paragraph 1, A separator plate device for a fuel cell, characterized in that the first flow limiting members are provided in plurality, and the plurality of first flow limiting members are arranged spaced apart from each other along the first direction.
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6. In paragraph 1, A separator for a fuel cell, characterized in that the first flow-limiting member extends along the second direction from the first gasket.
7. In paragraph 6, A fuel cell separator plate device characterized in that the end of the first flow limiting member contacts the land portion.
8. In paragraph 6, A fuel cell separator plate device characterized in that the end of the first flow limiting member is spaced apart from the land portion.
9. Body part; A channel portion provided in the above body portion and guiding the flow of fluid; A gasket portion spaced apart from the above-mentioned channel portion; and A flow limiting member that restricts fluid flow through the space between the channel portion and the gasket portion; is included. The above channel portion comprises a first channel portion disposed on a first surface of the body portion and having one or more first channels extending along a first direction; and land portions disposed on both sides of the first channel portion; including The above gasket portion comprises a first gasket disposed on the first surface and spaced apart from the land portion along a second direction intersecting the first direction; The above flow limiting portion comprises a first flow limiting member disposed between the land portion and the first gasket, extending from the first gasket along the second direction, with an end portion spaced apart from the land portion. A separator plate device for a fuel cell, further comprising: a groove formed by concavely sinking along the second direction from the land portion and positioned to face the end of the first flow limiting member.
10. Body part; A channel portion provided in the above body portion and guiding the flow of fluid; A gasket portion spaced apart from the above-mentioned channel portion; and A flow limiting member that restricts fluid flow through the space between the channel portion and the gasket portion; is included. The above channel portion comprises a first channel portion disposed on a first surface of the body portion and having one or more first channels extending along a first direction; Land portions disposed on both sides of the first channel portion; A second channel portion having one or more second channels disposed on a second surface of the body portion and adjacent to the first channel; and It includes a third channel section disposed on both sides of the second channel section; and The above gasket portion comprises: a first gasket disposed on the first surface and spaced apart from the land portion along a second direction intersecting the first direction; and It includes a second gasket disposed on the second surface and spaced apart from the third channel portion along the second direction; A separator plate device for a fuel cell, characterized in that the above flow limiting portion includes a first flow limiting member disposed between the land portion and the first gasket.
11. In Paragraph 10, A separator for a fuel cell, characterized in that the above flow limiting part further includes a second flow limiting member disposed between the third channel part and the second gasket.
12. In Paragraph 11, A separator plate device for a fuel cell, characterized in that the second flow limiting members are provided in plurality, and the plurality of second flow limiting members are arranged spaced apart from each other along the second direction.
13. In Paragraph 11, A fuel cell separator device characterized in that the second flow limiting member extends along the second direction from the second gasket.

Description

Separator apparatus for fuel cell The present invention relates to a separator plate device for a fuel cell, and more specifically, to a separator plate device for a fuel cell capable of concentrating the flow of reaction gas and cooling water within a reaction area. Generally, fuel cells are power generation methods that continuously produce electrical energy through the chemical reaction of continuously supplied fuel, and ongoing research and development is being conducted as an alternative to solve global environmental problems. Fuel cells can be classified according to the type of electrolyte used into phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), polymer electrolyte membrane fuel cells (PEMFC), alkaline fuel cells (AFC), and direct methanol fuel cells (DMFC); and depending on the type of fuel used, as well as operating temperature and output range, they can be applied to various fields such as mobile power, transportation, and distributed power generation. A fuel cell is typically formed by stacking multiple layers of unit cells to form a stack, each unit cell comprising a membrane electrode assembly (MEA) equipped with a catalyst layer that induces a reaction between hydrogen and oxygen, a pair of gas diffusion layers each bonded to the electrodes of the membrane electrode assembly to deliver hydrogen and oxygen to each electrode, a separator plate disposed on the outer surface of each gas diffusion layer to supply hydrogen and oxygen while simultaneously facilitating the discharge of water, and a gasket inserted between the separator plates to prevent leakage of hydrogen and oxygen and to seal the gaps. The background technology of the present invention is disclosed in Korean Patent Publication No. 10-0599776 (Registered on July 5, 2006; Title of Invention: Fuel Cell System and Stack thereof). FIG. 1 is a perspective view schematically showing the configuration of a separator plate device for a fuel cell according to a first embodiment of the present invention. FIG. 2 is a bottom perspective view schematically showing the configuration of a separator plate device for a fuel cell according to the first embodiment of the present invention. FIG. 3 is a cross-sectional perspective view schematically showing the configuration of a separator plate device for a fuel cell according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view schematically showing the configuration of a separator plate device for a fuel cell according to the first embodiment of the present invention. FIG. 5 is an enlarged view schematically showing the configuration of a first flow limiting member according to a first embodiment of the present invention. FIG. 6 is an enlarged view schematically showing the configuration of a second flow limiting member according to a first embodiment of the present invention. FIG. 7 is a cross-sectional perspective view schematically showing the configuration of a separator plate device for a fuel cell according to a second embodiment of the present invention. FIG. 8 is a cross-sectional view schematically showing the configuration of a separator plate device for a fuel cell according to a second embodiment of the present invention. FIG. 9 is an enlarged view schematically showing the configuration of a first flow limiting member according to a second embodiment of the present invention. Hereinafter, an embodiment of a separator plate device for a fuel cell according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. Furthermore, in this specification, when a part is described as being "connected (or joined)" to another part, this includes not only cases where they are "directly connected (or joined)" but also cases where they are "indirectly connected (or joined)" with other members interposed between them. In this specification, when a part is described as "including (or having) a certain component," this means that, unless specifically stated otherwise, it does not exclude other components but may additionally "include (or have)" other components. Furthermore, throughout this specification, the same reference numerals may refer to the same components. Even if the same or similar reference numerals are not mentioned or described in a specific drawing, they may be described based on other drawings. Additionally, even if a part is not indicated by a reference numeral in a specific drawing, that part may be described based on other draw