公开(公告)号：US20110076590A1

公开(公告)日：2011-03-31

申请号：US12858493

申请日：2010-08-18

申请人： Masaya KOZAKAI ,  Tsutomu Okusawa ,  Ko Takahashi ,  Hiroyuki Satake

发明人： Masaya KOZAKAI ,  Tsutomu Okusawa ,  Ko Takahashi ,  Hiroyuki Satake

IPC分类号： H01M8/10 ,  H01M8/02

CPC分类号： H01M8/04171 ,  H01M8/0206 ,  H01M8/0221 ,  H01M8/0226 ,  H01M8/0228 ,  H01M8/0258 ,  H01M8/0263 ,  H01M2008/1095

摘要： The object of the present invention is to provide a bipolar plate for a fuel cell, suppressing the stay of condensed water in a gas diffusion layer and improving gas diffusion performance. The bipolar plate supplies reaction gas to a power generating surface and has a channel for the reaction gas. The channel is formed with ribs which are made of a conductive material laminate. The ribs have a porous structure and water repellency. The water repellency of the ribs is set lower than that of an adjacent gas diffusion layer. Thus, the condensed water can be moved from the gas diffusion layer to the ribs in an area where the gas diffusion layer and the ribs are in contact with each other. Therefore, deterioration of the gas diffusion performance due to the stay of the condensed water in the gas diffusion layer can be prevented.

摘要翻译： 本发明的目的是提供一种用于燃料电池的双极板，抑制气体扩散层中冷凝水的停留并提高气体扩散性能。 双极板将反应气体供应到发电表面，并具有用于反应气体的通道。 通道形成有由导电材料层压体制成的肋。 肋具有多孔结构和防水性。 肋的防水性设定为低于相邻气体扩散层的拒水性。 因此，在气体扩散层和肋彼此接触的区域中，冷凝水可以从气体扩散层移动到肋。 因此，可以防止由于气体扩散层中的冷凝水滞留导致的气体扩散性能的劣化。

公开(公告)号：US20080081239A1

公开(公告)日：2008-04-03

申请号：US11845955

申请日：2007-08-28

申请人： Tsutomu OKUSAWA ,  Masaya KOZAKAI ,  Hidekazu FUJIMURA ,  Ko TAKAHASHI

发明人： Tsutomu OKUSAWA ,  Masaya KOZAKAI ,  Hidekazu FUJIMURA ,  Ko TAKAHASHI

IPC分类号： H01M8/00 ,  H01M2/00

CPC分类号： H01M8/04014 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/04029 ,  H01M8/241 ,  H01M2008/1095

摘要： A fuel cell according to the present invention comprises a membrane electrode assembly, a bipolar plate for guiding a reaction gas to the membrane electrode assembly, two layers of coolant flow fields formed on the bipolar plane opposite to another plane on which a reaction gas flow field is formed, and an interlayer separation plate; wherein the interlayer separation plate separates the two layers of coolant flow fields and has permeability or jet orifices so as to allow a coolant to pass through.

摘要翻译： 根据本发明的燃料电池包括膜电极组件，用于将反应气体引导到膜电极组件的双极板，形成在与其上具有反应气体流场的另一平面相反的双极平面上的两层冷却剂流场 和层间隔离板; 其中所述层间隔离板分离所述两层冷却剂流场并具有渗透性或喷射孔，以允许冷却剂通过。

公开(公告)号：US20110229787A1

公开(公告)日：2011-09-22

申请号：US13034876

申请日：2011-02-25

申请人： Masaya KOZAKAI ,  Tsutomu Okusawa

发明人： Masaya KOZAKAI ,  Tsutomu Okusawa

IPC分类号： H01M8/24 ,  H01M8/04

CPC分类号： H01M8/04059 ,  H01M8/023 ,  H01M8/04126 ,  H01M2008/1095

摘要： A proton exchange membrane fuel cell stack comprises a plurality of stacked unit cells, the unit cells each including: a membrane electrode assembly; an anode side-conductive gas diffusion layer and an anode side-fuel gas flow field to feed a fuel gas to an anode of the membrane electrode assembly; and a cathode side-conductive gas diffusion layer and a cathode side-oxidant gas flow field to feed an oxidant gas to a cathode of the membrane electrode assembly; and a bipolar plate for separating between the anode side-fuel flow field and the cathode side-oxidant gas flow field. Then, the fuel gas flow field and the oxidant gas flow field are constituted by respective porous media flow fields each which is a conductive porous medium, and the porous media flow field for the oxidant gas flow field is configured so that liquid water is supplied mixedly together with the oxidant gas thereto.

摘要翻译： 质子交换膜燃料电池堆包括多个层叠的单元电池，所述单电池单元包括：膜电极组件; 阳极侧导电气体扩散层和阳极侧燃料气体流场，以将燃料气体供给到所述膜电极组件的阳极; 以及阴极侧导电性气体扩散层和阴极侧氧化剂气体流场，以将氧化剂气体供给到所述膜电极接合体的阴极; 以及用于在阳极侧燃料流场和阴极侧氧化剂气体流场之间分离的双极板。 然后，燃料气体流场和氧化剂气体流场由各自作为导电性多孔介质的多孔介质流场构成，并且用于氧化剂气体流场的多孔介质流场被配置为使得液体混合地供应 与氧化剂气体一起。

公开(公告)号：US20120107722A1

公开(公告)日：2012-05-03

申请号：US13286256

申请日：2011-11-01

申请人： Hiroyuki SATAKE ,  Masaya KOZAKAI ,  Kenji YAMAGA

发明人： Hiroyuki SATAKE ,  Masaya KOZAKAI ,  Kenji YAMAGA

IPC分类号： H01M8/04 ,  H01M8/10

CPC分类号： H01M8/0247 ,  H01M8/04156 ,  H01M2008/1095

摘要： A separator for a fuel cell includes a metal separator (metal substrate) having projections formed by ribs, and porous members provided in a plurality of flow passages partitioned by the projections, in which a hydrophilic portion is provided in a center part of a cross section orthogonal to a flow direction in the porous member, and a water repellent portion is provided in at least a part of portions in contact with wall surfaces of the flow passage within a range of the cross section.According to the present invention, the mixed phase flow in which the reaction gas and the cooling water inside the flow passages are mixed can be made an even flow in the separator in which the porous members are provided in the gas flow passages.

摘要翻译： 用于燃料电池的隔板包括具有由肋形成的突起的金属隔板（金属基板），以及设置在由突起分隔开的多个流动通道中的多孔构件，其中亲水部分设置在横截面的中心部分 与多孔构件中的流动方向正交，并且在横截面的范围内的至少一部分与流路的壁面接触的部分设置有防水部。 根据本发明，混合有将流路内的反应气体和冷却水混合的混合流可以在气体流路中设置有多孔体的隔板中均匀地流动。