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    • 5. 发明授权
    • Stacking and manifolding of unitized solid oxide fuel cells
    • 单元化固体氧化物燃料电池的堆叠和歧管
    • US06803136B2
    • 2004-10-12
    • US09827843
    • 2001-04-05
    • Estela OngNguyen Minh
    • Estela OngNguyen Minh
    • H01M812
    • H01M8/04089H01M8/004H01M8/0258H01M8/2425H01M8/2484H01M8/2485H01M2008/1293
    • A fuel cell stack comprises a plurality of planar fuel cells in a spiral configuration. The fuel cells angularly offset from one another such that immediately adjacent cells only partially overlap one another. The cells are preferably of the unitized type. A manifold assembly is operatively adjacent to the fuel cells. The manifold assembly includes an inlet manifold and an outlet manifold for each of the gases that are in communication with the fuel cells. The unitized solid oxide fuel cell comprises a first planar interconnect, a planar ceramic cell adjacent the first planar interconnect, a second planar interconnect adjacent the opposite side of the planar ceramic cell, and a plurality of gas tubes adjacent the planar ceramic cell. The gas tubes are arranged to a first configuration, a second configuration, a third configuration and a fourth configuration with a cylindrical gas tube shape and a T-shape gas tube designs. These configurations provide a choice of co-flow, cross flow or counter flow patterns inside the cell to improve the thermal management and cell efficiency and provide more flexibilities to connect a manifold assembly. They also provide an option to directly combust the spent fuel just outside the fuel cell to eliminate a separate burner for residual energy recovery. These configurations thus provide means for improved fuel cell power system efficiency and lowered capital and operational costs.
    • 燃料电池堆包括螺旋构型的多个平面燃料电池。 燃料电池彼此成角度地偏移,使得紧邻的电池仅部分地彼此重叠。 细胞优选为单位化型。 歧管组件可操作地邻近燃料电池。 歧管组件包括与燃料电池连通的每个气体的入口歧管和出口歧管。 单元化固体氧化物燃料电池包括第一平面互连,与第一平面互连相邻的平面陶瓷单元,邻近平面陶瓷单元的相对侧的第二平面互连以及与平面陶瓷单元相邻的多个气体管。 气体管被布置成具有圆柱形气体管形状和T形气体管的第一构造,第二构造,第三构造和第四构造。 这些配置提供了单元内的共流,交叉流或逆流模式的选择,以改善热管理和电池效率,并提供连接歧管组件的更多灵活性。 它们还提供了在燃料电池外部直接燃烧乏燃料的选项,以消除用于剩余能量回收的独立燃烧器。 因此,这些配置提供了改善燃料电池电力系统效率并降低了资本和运营成本的手段。