JP2005216580A - Separator of fuel cell - Google Patents

Separator of fuel cell Download PDF

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Publication number
JP2005216580A
JP2005216580A JP2004019536A JP2004019536A JP2005216580A JP 2005216580 A JP2005216580 A JP 2005216580A JP 2004019536 A JP2004019536 A JP 2004019536A JP 2004019536 A JP2004019536 A JP 2004019536A JP 2005216580 A JP2005216580 A JP 2005216580A
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Japan
Prior art keywords
flow path
flow passage
separator
fuel cell
gas flow
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Japanese (ja)
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Masatoshi Oshima
正稔 大島
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Kawamura Electric Inc
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Kawamura Electric Inc
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Priority to JP2004019536A priority Critical patent/JP2005216580A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Fuel Cell (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separator of a fuel cell in which power generation state is stable and a countermeasure to gas leakage gas leakage is easy to be taken because pressure in respective parts of a flow passage becomes constant, and in which manufacturing cost is low because a pressure resistance capacity can be reduced at the flow passage entrance. <P>SOLUTION: In the separator 1 of the fuel cell in which a shape of the gas flow passage 2 is formed in a meandering flow passage, the width of a groove of the gas flow passage 2 becomes constant and the depth of the groove becomes shallow from the entrance 3 toward the exit 4, and the cross-sectional area is formed to be smaller so that the pressure in respective parts of the gas flow passage 2 is made to be constant. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、燃料電池のセパレータに関する。   The present invention relates to a separator for a fuel cell.

燃料電池のセパレータに形成されるガス流路の形状は多数あり、その１つとして蛇行流路がある。この蛇行流路は直線状の流路が途中でヘアピン状に複数回折り返され、入口から出口まで一定の断面積で形成された形状であり、特性としてはガス流速が早く、加湿されたガスの結露による水や、反応により発生した生成水等により流路が塞がれる危険性が小さいものである。（例えば、特許文献１参照。）。
特開２００２−８３６１０号公報（第１図） There are many shapes of gas flow paths formed in the separator of a fuel cell, and one of them is a meandering flow path. This meandering channel is a shape in which a straight channel is bent back and forth in the form of a hairpin in the middle, and is formed with a constant cross-sectional area from the inlet to the outlet. There is little risk that the flow path is blocked by water due to dew condensation or product water generated by the reaction. (For example, refer to Patent Document 1).
JP 2002-83610 A (FIG. 1)

しかしながら、蛇行流路は流路内でのガスの圧損が他の形状の流路に比べて大きいため、流路の出口までガスを流すために入口から大きな圧力をかける必要であり、そのため、流路の各部にガス漏れ防止対策を施さなければならず、コストが高くなるという問題があった。   However, since the pressure loss of the gas in the meandering channel is larger than that of other shape channels, it is necessary to apply a large pressure from the inlet to flow the gas to the outlet of the channel. Gas leakage prevention measures must be taken at each part of the road, and there is a problem that costs increase.

本発明は、ガス流路の形状が蛇行流路に形成された燃料電池のセパレータにおいて、ガス流路の断面積が入口から出口に向けて小さくなるように形成したことを特徴とする。   The present invention is characterized in that in the separator of a fuel cell in which the shape of the gas flow path is formed in a meandering flow path, the cross-sectional area of the gas flow path is reduced from the inlet toward the outlet.

本発明の燃料電池のセパレータは、流路の各部における圧力が一定になるため、発電状態が安定するとともにガス漏れ対策がしやすく、また、流路入口において耐圧能力を低減することができるため、安価に製作することができるという効果がある。   Since the separator of the fuel cell of the present invention has a constant pressure in each part of the flow path, the power generation state is stabilized and gas leakage countermeasures are easy, and the pressure resistance capability can be reduced at the flow path inlet. There is an effect that it can be manufactured at low cost.

ガス流路の形状が蛇行流路に形成された燃料電池のセパレータにおいて、ガス流路が入口から出口に向けて溝の幅が一定で溝の深さが浅くなるようにして断面積を小さくなるように形成する。   In a fuel cell separator in which the shape of the gas channel is a serpentine channel, the gas channel has a constant groove width and a shallow groove depth from the inlet to the outlet, and the cross-sectional area is reduced. To form.

本発明に係る燃料電池のセパレータの実施例１を図１の添付図面に基づいて説明する。   A fuel cell separator according to a first embodiment of the present invention will be described with reference to the attached drawing of FIG.

燃料電池のセパレータ１は矩形板状に形成され、対角する二隅にガス流路２の入口３と出口４が夫々設けられている。この入口３と出口４の間のガス流路２は直線状であって途中が複数回ヘアピン状に折り返された蛇行流路に形成されている。   The separator 1 of the fuel cell is formed in a rectangular plate shape, and an inlet 3 and an outlet 4 of the gas flow path 2 are provided at two diagonal corners, respectively. The gas flow path 2 between the inlet 3 and the outlet 4 is linear and is formed in a meandering flow path that is folded back several times in the shape of a hairpin.

ガス流路２は入口３から出口４に向けて溝の幅は一定であるが溝の深さが浅くなって流路の断面積が少しずつ小さくなるように形成されている。   The gas flow path 2 is formed so that the groove width is constant from the inlet 3 to the outlet 4, but the groove depth becomes shallower and the cross-sectional area of the flow path gradually decreases.

これにより、供給されたガスが発電によって消費されてもガス流路２の各部における圧力がほぼ一定となり、発電状態が安定するとともにガス漏れ対策がしやすく、また、流路入口において耐圧能力を低減することができるため、安価に製作することができる。   As a result, even if the supplied gas is consumed by power generation, the pressure in each part of the gas flow path 2 becomes almost constant, the power generation state is stabilized and gas leakage countermeasures are easy, and the pressure resistance capacity is reduced at the flow path inlet. Can be manufactured at low cost.

本発明に係る扉用ハンドルの実施例２を図２の添付図面に基づいて説明する。   A second embodiment of the door handle according to the present invention will be described with reference to the attached drawing of FIG.

燃料電池のセパレータ１１は矩形板状に形成され、対角する二隅にガス流路１２の入口１３と出口１４が夫々形成されている。この入口１３と出口１４の間のガス流路１２は直線状であって途中が複数回ヘアピン状に折り返された蛇行流路に形成されている。   The separator 11 of the fuel cell is formed in a rectangular plate shape, and an inlet 13 and an outlet 14 of the gas flow path 12 are respectively formed at two diagonal corners. The gas flow path 12 between the inlet 13 and the outlet 14 is formed in a meandering flow path that is straight and is folded back in a hairpin shape a plurality of times.

ガス流路１２は入口１３から出口１４に向けて溝の深さは一定であるが溝の幅が狭くなって流路の断面積が少しずつ小さくなるように形成されている。   The gas flow path 12 is formed so that the groove depth is constant from the inlet 13 to the outlet 14, but the width of the groove is reduced and the cross-sectional area of the flow path is gradually reduced.

これにより、供給されたガスが発電によって消費されてもガス流路１２の各部における圧力がほぼ一定となり、発電状態が安定するとともにガス漏れ対策がしやすく、また、流路入口において耐圧能力を低減することができるため、安価に製作することができる。   As a result, even if the supplied gas is consumed by power generation, the pressure in each part of the gas flow path 12 becomes almost constant, the power generation state is stabilized and gas leakage countermeasures are easy, and the pressure resistance capacity is reduced at the flow path inlet. Can be manufactured at low cost.

尚、本実施例において、ガス流路の溝の幅又は深さを変えて入口から出口に向けて流路の断面積が小さくなるように形成したが、ガス流路の溝と深さの両方を変えて流路の断面積が入口から出口に向けて小さくなるように形成しても良い。   In this embodiment, the width or depth of the groove of the gas flow path is changed so that the cross-sectional area of the flow path decreases from the inlet to the outlet, but both the groove and the depth of the gas flow path are formed. The cross-sectional area of the flow path may be changed so as to decrease from the inlet toward the outlet.

本発明の実施例１に係る燃料電池のセパレータを示し、（ａ）は正面図、（ｂ）は（ａ）のＡ−Ａ線断面図である。The separator of the fuel cell which concerns on Example 1 of this invention is shown, (a) is a front view, (b) is the sectional view on the AA line of (a). 本発明の実施例２に係る燃料電池のセパレータを示し、（ａ）は正面図、（ｂ）は（ａ）のＢ−Ｂ線断面図である。The separator of the fuel cell which concerns on Example 2 of this invention is shown, (a) is a front view, (b) is the BB sectional drawing of (a).

符号の説明Explanation of symbols

１ セパレータ
２ ガス流路
３ 入口
４ 出口 1 Separator 2 Gas flow path 3 Inlet 4 Outlet

Claims (1)

ガス流路の形状が蛇行流路に形成された燃料電池のセパレータにおいて、前記ガス流路の断面積が入口から出口に向けて小さくなるように形成したことを特徴とする燃料電池のセパレータ。   A fuel cell separator having a gas flow path formed in a serpentine flow path, wherein the cross-sectional area of the gas flow path is reduced from an inlet toward an outlet.
JP2004019536A 2004-01-28 2004-01-28 Separator of fuel cell Pending JP2005216580A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008192619A (en) * 2007-02-06 2008-08-21 Samsung Sdi Co Ltd Separator for direct methanol fuel cell
KR100994125B1 (en) * 2007-02-06 2010-11-15 삼성에스디아이 주식회사 Separator for direct methanol fuel cell
KR101080310B1 (en) 2009-03-27 2011-11-04 (주)퓨얼셀 파워 Separator and fuel cell stack using thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008192619A (en) * 2007-02-06 2008-08-21 Samsung Sdi Co Ltd Separator for direct methanol fuel cell
KR100994125B1 (en) * 2007-02-06 2010-11-15 삼성에스디아이 주식회사 Separator for direct methanol fuel cell
US7964322B2 (en) * 2007-02-06 2011-06-21 Samsung Sdi Co., Ltd. Separator for direct methanol fuel cell
KR101080310B1 (en) 2009-03-27 2011-11-04 (주)퓨얼셀 파워 Separator and fuel cell stack using thereof

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