FUEL CELL STACK

PROBLEM TO BE SOLVED: To provide a fuel cell stack having a simple and compact configuration and capable of surely preventing a temperature drop of an end-part power generation cell and successfully performing warming.SOLUTION: In a fuel cell stack 10, end plates 20a and 20b are disposed at both end...

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Bibliographische Detailangaben
Hauptverfasser: MIYAJIMA KAZUYOSHI, ASANO YUJI, OKANO TATSU, IWANARI TORU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a fuel cell stack having a simple and compact configuration and capable of surely preventing a temperature drop of an end-part power generation cell and successfully performing warming.SOLUTION: In a fuel cell stack 10, end plates 20a and 20b are disposed at both ends of a laminate 14 in which a plurality of power generating cells 12 are laminated via insulators 18a and 18b. The insulator 18b is provided with heat pipe structures 70a and 70b. A pair of light-receiving units 72a constituting the heat pipe structure 70a are inserted into a pair of cooling medium inlet communication holes 40a. The pair of heat-receiving units 72a extend along a surface direction parallel to a power generating surface of a power generating cell 12, and are integrally coupled to a heat radiating unit 74a which emits the heat received by each heat-receiving unit 72a. 【課題】簡単且つコンパクトな構成で、端部発電セルの温度低下を確実に阻止するとともに、暖機を良好に遂行することを可能にする。【解決手段】燃料電池スタック10は、複数の発電セル12が積層される積層体14の両端部に、インシュレータ18a、18bを介してエンドプレート20a、20bが配設される。インシュレータ18bには、ヒートパイプ構造体70a、70bが設けられる。ヒートパイプ構造体70aを構成する一対の受熱部72aは、一対の冷却媒体入口連通孔40aに挿入される。一対の受熱部72aは、発電セル12の発電面に平行な面方向に沿って延在し、各受熱部72aで受熱した熱を放出する放熱部74aに一体に連結される。【選択図】図2