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    • 7. 发明申请
    • STAMPED FUEL CELL BIPOLAR PLATE
    • 冲压燃料电池双极板
    • US20090004522A1
    • 2009-01-01
    • US12207541
    • 2008-09-10
    • Jeffrey A. RockHarald SchlagKim R. Griffith
    • Jeffrey A. RockHarald SchlagKim R. Griffith
    • H01M8/02H01M8/04
    • H01M8/0263H01M8/0258H01M8/0267H01M8/0273H01M8/241H01M8/242H01M8/2457H01M8/2483
    • An electro-conductive plate assembly for a fuel cell has a pair of stamped plates joined together to define a coolant volume therein. Each of the pair of stamped plates has a flow field on a major outer surface arranged to maximize the contact area between major inner surfaces of the plates while allowing coolant to distribute and flow readily within the coolant volume. The flow fields formed on the major outer surfaces provide corresponding sets of lands on the major inner surfaces that contact to form a third flow field of the coolant volume. The third flow field formed by the lands includes a plurality of longitudinal channels and an array of flow disruptors. The bipolar plate assembly further includes a seal arrangement and integral manifolds to direct reactant gas and coolant flow through the fuel cell.
    • 用于燃料电池的导电板组件具有连接在一起以在其中限定冷却剂体积的一对冲压板。 一对冲压板中的每一个在主外表面上具有流场,其布置成使板的主内表面之间的接触面积最大化,同时允许冷却剂在冷却剂体积内容易分布和流动。 形成在主外表面上的流场在主内表面上提供相应的一组焊盘,其接触以形成冷却剂体积的第三流场。 由焊盘形成的第三流场包括多个纵向通道和一组流动扰流器。 双极板组件还包括密封装置和一体式歧管,以引导反应气体和冷却剂流过燃料电池。
    • 9. 发明申请
    • Method of fabricating a bipolar plate assembly
    • 制造双极板组件的方法
    • US20050202303A1
    • 2005-09-15
    • US11127484
    • 2005-05-12
    • Harald Schlag
    • Harald Schlag
    • B23K26/24H01M8/02B23K31/02
    • H01M8/0267B23K26/244
    • A method of fabrication is adapted to weld paired metal plates, particularly fuel cell bipolar plates, using a partial vacuum to hold the paired metal plates together during the welding process. Each bipolar plate has a plurality of contact surfaces for joining the paired metal plates. The contact surfaces of a first plate are co-aligned with contact surfaces of a second plate. An outer perimeter and a plurality of reactant gas channels and ports of each plate pair are sealed to form a sealable interior volume. A partial vacuum is drawn in the interior volume to clamp each plate pair together at the contact surfaces and a weld joint is made between at least a plurality of the contact surfaces. Laser welding is preferably used for its ability to fuse the contact surfaces together without perforating the plates and thereby losing the partial vacuum.
    • 一种制造方法适用于在焊接过程中使用部分真空来将成对的金属板,特别是燃料电池双极板焊接在一起,将一对金属板保持在一起。 每个双极板具有用于连接成对的金属板的多个接触表面。 第一板的接触表面与第二板的接触表面共同对准。 每个板对的外周和多个反应物气体通道和端口被密封以形成可密封的内部容积。 部分真空被抽吸在内部体积中以将每个板对在接触表面处夹在一起,并且在至少多个接触表面之间形成焊接接头。 优选使用激光焊接来将接触表面融合在一起的能力,而不会对板进行穿孔,从而失去部分真空。