Stress reducing mounting for electrolyte sheet assembly in a solid oxide fuel cell
    7.
    发明授权
    Stress reducing mounting for electrolyte sheet assembly in a solid oxide fuel cell 失效
    用于固体氧化物燃料电池中的电解质片组件的减压安装

    公开(公告)号:US07803494B2

    公开(公告)日:2010-09-28

    申请号:US11233679

    申请日:2005-09-23

    IPC分类号: H01M8/02 H01M8/12

    摘要: A stress reducing mounting for an electrolyte sheet assembly in a solid electrolyte fuel cell is provided that includes a support frame or manifold having an inner edge portion that supports a peripheral portion of the sheet assembly, a seal that affixes an edge of the peripheral portion to the frame or manifold, and a stress reducer disposed around the peripheral portion of the electrolyte sheet and the frame or manifold that reduces tensile stress in the peripheral portion of the electrolyte sheet when the peripheral portion is bent by pressure differentials or thermal differential expansion. The stress reducer is at least one of a convex curved surface on the inner edge portion of the frame or manifold that makes area contact with the peripheral portion when it bends in response to a pressure differential or thermal differential expansion, and a stiffening structure on the sheet peripheral portion that renders the ceramic sheet material forming the peripheral portion more resistant to bending. The stress reducing mounting reduces cracking in the electrolyte sheet at the peripheral portions due to tensile forces.

    摘要翻译: 提供了一种用于固体电解质燃料电池中的电解质片组件的减压安装件,其包括:支撑框架或歧管,其具有支撑片组件的周边部分的内边缘部分,将周边部分的边缘固定到 框架或歧管,以及设置在电解质片和框架或歧管的周边部分周围部分周围部分被压力差或热差膨胀而弯曲的电解质片的周边部分中的拉伸应力的应力减小器。 所述减压器是在所述框架或歧管的内缘部分上的凸曲面中的至少一个,当所述框架或歧管的内边缘部分响应于压差或热差膨胀而弯曲时与所述周边部分进行区域接触,并且所述加强结构 使得形成周边部分的陶瓷片材更耐弯曲的片材周边部分。 降低应力的安装减少了由于张力而在周边部分的电解质片断裂。