JP2021140909A - 金属セパレータ、燃料電池及び金属セパレータの製造方法 - Google Patents
金属セパレータ、燃料電池及び金属セパレータの製造方法 Download PDFInfo
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Abstract
Description
16…電解質膜・電極構造体(MEA) 20…電解質膜
22…アノード電極 24…カソード電極
26…連通孔 26a…反応ガス連通孔
32…冷媒連通孔 38…流体流路
38a…反応ガス流路 40…アノードセパレータ
44…カソードセパレータ 48…冷媒流路
50…金属プレート 50a…ブリッジ部分
51…金属露出面 52…ゴム部材
53…ゴム延在部 54…アノードゴム部材
55…アノード側ゴム延在部 56…カソードゴム部材
57…カソード側ゴム延在部 58…流体通路
60…プライマ 64…接合境界部
64a…第1接着部 64b…第2接着部
Claims (10)
- 電解質膜の両面に電極が設けられる電解質膜・電極構造体の両面に各々積層されて、燃料電池を構成する金属セパレータであって、
当該金属セパレータは、
積層方向に流体を流通させる連通孔を有し、且つセパレータ面に沿って前記流体を流通させる流体流路を形成する金属プレートと、
前記金属プレートに接着され、前記連通孔から前記流体流路に向かって延在する複数のゴム延在部とを有し、
前記複数のゴム延在部同士の間には、前記金属プレートの金属面が露出すると共に、前記連通孔と前記流体流路の間を連通する通路が形成され、
前記複数のゴム延在部は、前記金属プレートと前記ゴム延在部の間で複数の点状プライマを介して当該金属プレートに接着されている
金属セパレータ。 - 請求項1記載の金属セパレータにおいて、
前記金属プレートと前記ゴム延在部と間の接合境界部は、
前記複数の点状プライマを介して接着した第1接着部と、
前記複数の点状プライマの非塗布箇所において前記金属プレートと前記ゴム延在部が直接接着した第2接着部とを有する
金属セパレータ。 - 請求項1又は2記載の金属セパレータにおいて、
前記ゴム延在部の接着面の面積に対する前記複数の点状プライマの合計面積の比率が10%〜30%である
金属セパレータ。 - 請求項1〜3のいずれか1項に記載の金属セパレータにおいて、
前記複数の点状プライマは、前記金属面にも塗布されている
金属セパレータ。 - 請求項1〜4のいずれか1項に記載の金属セパレータにおいて、
前記ゴム延在部は、前記金属プレートに設けられるゴム部材の一部であり、
前記複数のゴム延在部の接着箇所以外の前記ゴム部材の接着箇所は、面状に塗布された面状プライマを介して前記金属プレートに接着されている
金属セパレータ。 - 請求項1〜5のいずれか1項に記載の金属セパレータにおいて、
前記複数の点状プライマは、マトリクス状に配列されている
金属セパレータ。 - 請求項1〜6のいずれか1項に記載の金属セパレータにおいて、
前記金属セパレータは、前記連通孔として冷媒を流通する冷媒連通孔を有すると共に、前記燃料電池を複数積層した状態で、前記流体流路として隣接する他の金属セパレータとの間に前記冷媒を流通させる冷媒流路を有し、
前記冷媒連通孔と前記冷媒流路の間に、前記複数の点状プライマにより接着された前記ゴム延在部が設けられる
金属セパレータ。 - 請求項1〜7のいずれか1項に記載の金属セパレータにおいて、
前記金属セパレータは、前記連通孔として反応ガスを流通する反応ガス連通孔を有すると共に、前記流体流路として前記電解質膜・電極構造体との間に前記反応ガスを流通させる反応ガス流路を有し、
前記反応ガス連通孔と前記反応ガス流路の間に、前記複数の点状プライマにより接着された前記ゴム延在部が設けられる
金属セパレータ。 - 電解質膜の両面に電極が設けられる電解質膜・電極構造体の両面の各々に金属セパレータを積層して構成される燃料電池であって、
前記金属セパレータは、
積層方向に流体を流通させる連通孔を有し、且つセパレータ面に沿って前記流体を流通させる流体流路を形成する金属プレートと、
前記金属プレートに接着され、前記連通孔から前記流体流路に向かって延在する複数のゴム延在部とを有し、
前記複数のゴム延在部同士の間には、前記金属プレートの金属面が露出すると共に、前記連通孔と前記流体流路の間を連通する通路が形成され、
前記複数のゴム延在部は、前記金属プレートと前記ゴム延在部の間で複数の点状プライマを介して当該金属プレートに接着されている
燃料電池。 - 電解質膜の両面に電極が設けられる電解質膜・電極構造体の両面に各々積層されて、燃料電池を構成する金属セパレータの製造方法であって、
積層方向に流体を流通させる連通孔を有し、且つセパレータ面に沿って前記流体を流通させる流体流路を形成する金属プレートを製造する金属プレート加工工程と、
前記連通孔から前記流体流路に向かって延在する複数のゴム延在部を前記金属プレートに設けるゴム付加工程とを有し、
前記複数のゴム延在部同士の間には、前記金属プレートの金属面が露出すると共に、前記連通孔と前記流体流路の間を連通する通路が形成され、
前記ゴム付加工程では、複数の点状プライマを介して前記金属プレートと前記複数のゴム延在部を接着する
金属セパレータの製造方法。
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US17/190,978 US20210280877A1 (en) | 2020-03-04 | 2021-03-03 | Metal separator, fuel cell, and method of producing metal separator |
CN202110236029.XA CN113363523A (zh) | 2020-03-04 | 2021-03-03 | 金属隔板、燃料电池以及金属隔板的制造方法 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005005012A (ja) * | 2003-06-10 | 2005-01-06 | Toyota Motor Corp | 燃料電池用セパレータへの接着剤塗布方法 |
JP2007134204A (ja) * | 2005-11-11 | 2007-05-31 | Honda Motor Co Ltd | 燃料電池セパレータ |
JP2009104987A (ja) * | 2007-10-25 | 2009-05-14 | Honda Motor Co Ltd | 燃料電池 |
JP2010027332A (ja) * | 2008-07-17 | 2010-02-04 | Honda Motor Co Ltd | 燃料電池 |
JP2019071263A (ja) * | 2017-10-11 | 2019-05-09 | トヨタ自動車株式会社 | 燃料電池の単セルの製造方法 |
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