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    • 9. 发明申请
    • EVAPORATIVELY COOLED FUEL CELLS WITH WATER PASSAGEWAYS ENHANCED BY WICKS
    • 通过WICKS增强的水分蒸发蒸发燃料电池
    • WO2012047184A1
    • 2012-04-12
    • PCT/US2010/002691
    • 2010-10-06
    • UTC POWER CORPORATIONDARLING, Robert, M.SKIBA, Tommy
    • DARLING, Robert, M.SKIBA, Tommy
    • H01M8/04H01M8/10F25D17/00
    • H01M8/04059H01M8/023H01M8/0258H01M8/0267H01M8/04074H01M8/04171H01M8/2457H01M8/2459H01M8/2484H01M2008/1095Y02E60/50Y02E60/521
    • Fuel cells (38) have passageways (83, 84) that provide water through one or both reactant gas flow field plates (75, 81 ) of each fuel cell, whereby the fuel cell is cooled evaporatively. The water passageways may be vented by a porous plug (not shown), or by a microvacuum pump (89). A condenser (59) may have a reservoir (64); the condenser (59) may be a vehicle radiator. A highly water permeable wicking layer (90) is disposed adjacent to one or both water passageways (83, 84) which exist between individual fuel cells (38). The passageways may be flow-through passageways (83) (Fig. 5) or they may be interdigitated passageways (83a, 83b) (Fig. 6) in order to increase the flow of water-purging air through the wicking layer (90) utilized to clear the stack of water during shutdown in cold environments. The inlet interdigitated channels (83c, 83d) may be only partially blocked at their outlet ends such as by a protrusion (104) or a hole (106) in order to ensure that any gas entering the inlet coolant passageways (83c, 83d) will not accumulate at the outlet end (101 ) of the inlet coolant passageways.
    • 燃料电池(38)具有通过每个燃料电池的一个或两个反应气体流场板(75,81)提供水的通道(83,84),由此燃料电池被蒸发冷却。 水通道可以由多孔塞(未示出)或微型真空泵(89)排出。 冷凝器(59)可以具有储存器(64); 冷凝器(59)可以是车辆散热器。 高度可渗透的芯吸层(90)设置在存在于单个燃料电池(38)之间的一个或两个水通道(83,84)附近。 通道可以是流过通道(83)(图5),或者它们可以是叉指通道(83a,83b)(图6),以增加通过芯吸层(90)的净水空气的流动, 用于在寒冷的环境中关闭期间清除水堆。 入口交错通道(83c,83d)可以仅在其出口端例如通过突起(104)或孔(106)部分地被阻塞,以便确保进入入口冷却剂通道(83c,83d)的任何气体将 不会积聚在入口冷却剂通道的出口端(101)处。