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    • 41. 发明公开
    • Polymer electrolyte fuel cell
    • 聚合物电解质燃料电池
    • EP1298745A2
    • 2003-04-02
    • EP02256655.8
    • 2002-09-25
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Yoshida, AkihikoYamamoto, MasaoNiikura, JunjiTakebe, YasuoSakai, OsamuUchida, Makoto
    • H01M4/86H01M8/10
    • H01M4/8821H01M4/8605H01M4/8642H01M4/8652H01M4/8657H01M4/8828H01M4/92H01M4/96H01M8/04089H01M8/1004
    • A porous supporting carbon body of a gas diffusion layer is provided with a larger number of smaller pores at its catalyst layer side and a smaller number of larger pores at the other side, particularly with an appropriate distribution of finer mesh at its catalyst layer side and coarser mesh at the other side. Thereby, a high performance polymer electrolyte fuel cell can be obtained in which water generated at the catalyst layer is quickly sucked out to the gas diffusion layer, and is evaporated at the gas diffusion layer to be effectively exhausted to outside the fuel cell, so that excessive water can be prevented from retaining in the gas diffusion electrode, with the polymer electrolyte membrane being maintained at an appropriately wet condition.
      Further, a gas diffusion layer is provided with an electrically conductive polymer-containing layer comprising carbon particles and a polymer material. In it, a combination of two kinds of carbon particles having different amounts of acidic function group is used in a manner that the weight ratio of one kind having a larger acidic function group, relative to the other kind, increases from one end of the gas diffusion layer, corresponding to the inlet of a gas flow channel, to the other end. Thereby, the water permeating function at the surface of the gas diffusion layer can be so adjusted that the inside of the MEA is maintained at an appropriately wet condition, while excessive water is quickly exhausted to outside of the fuel cell together with e.g. the reactive gas. This can also be achieved by using a combination of two kinds of polymer materials in the electrically conductive polymer-containing layer in a manner that the two kinds have either different degrees of crystallinity or different coefficients of moisture permeability, so that the degrees of crystallinity decreases and the coefficients of moisture permeability increases from the one end to the other end of the gas diffusion layer.
    • 44. 发明公开
    • Polymer electrolyte fuel cell
    • 固体电解质燃料电池
    • EP0981174A3
    • 2000-07-12
    • EP99116104.3
    • 1999-08-17
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Hatoh, KazuhitoYasumoto, EiichiNishida, KazufumiGyoten, HisaakiOhara, HideoUchida, MakotoSugawara, YasushiKanbara, TeruhisaMatsumoto, ToshihiroNakagawa, Kouji
    • H01M8/24
    • H01M8/247H01M2300/0082
    • The present invention provides a polymer electrolyte fuel cell having a small-sized, light-weighted mechanism for fastening a stack of unit cells assembly. The polymer electrolyte fuel cell of the present invention includes a stack of unit cells (30) obtained by laying a plurality of unit cells one upon another; a first end plate (31) disposed on one end of the stack of unit cells; a second end plate (32) arranged on the other end of the stack of unit cells; an auxiliary plate (33;34) disposed at least outside the first end plate; at least one set of restraining means (39), each of which has a band-like shape and restrains a first member located on one end of an assembly, which includes the stack of unit cells, the first and the second end plates, and the auxiliary plate, and a second member located on the other end of the assembly to restrict separation of the first member and the second member from each other; a screw (35) fitted in a threaded hole formed in the auxiliary plate (33;34) in such a manner that an end of the screw comes into contact with the first end plate; and compressive means that generates a repulsive force to compress the stack of unit cells when the screw is fitted in the threaded hole of the auxiliary plate.
    • 本发明提供一种聚合物电解质燃料电池,其具有用于紧固一叠单电池组件的小型轻量机构。 本发明的聚合物电解质燃料电池包括通过将多个单元电池相互重叠而获得的单元电池(30)的堆叠; 布置在所述单元电池堆的一端上的第一端板(31) 布置在所述单元电池堆的另一端上的第二端板(32); 辅助板(33; 34),其至少设置在所述第一端板的外侧; 至少一组限制装置(39),每个限制装置具有带状形状并且限制位于组件的一端上的第一构件,该组件包括单元电池,第一和第二端板的堆叠,以及 所述辅助板以及位于所述组件的另一端上的第二构件,以限制所述第一构件和所述第二构件彼此分离; 螺钉(35),以螺钉的一端与第一端板接触的方式装配在形成在辅助板(33; 34)中的螺纹孔中; 以及当螺钉装配在辅助板的螺纹孔中时产生排斥力以压缩单元电池堆的压缩装置。
    • 45. 发明公开
    • Fuel cell for mounting on equipment
    • Brennstoffzelle zur Befestigung aufGeräte
    • EP0788172A1
    • 1997-08-06
    • EP97101565.6
    • 1997-01-31
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Uchida, MakotoFukuoka, YukoSugawara, YasushiEda, Nobuo
    • H01M8/10G06F1/16H01M8/06H01M2/10
    • G06F1/1616G06F1/1635G06F1/20G06F1/26H01M2/1022H01M8/04007H01M8/04014H01M8/04119H01M8/04156H01M8/065H01M8/1007H01M16/003H01M16/006H01M2300/0082
    • A fuel cell device adapted for mounting on a portable equipment such as a personal computer or the like includes a fuel cell body (4), a hydride hydrogen storage unit (5) necessary for the fuel cell body, a control unit (9) for controlling a flow of the hydrogen from the hydrogen storage unit to control an operation of a fuel cell in the fuel cell body, a hydrogen supply device (6a) interconnecting the hydrogen storage unit and the fuel cell body to supply the hydrogen from the hydrogen storage unit to the fuel cell body, and an air feed device (7) for supplying air to the fuel cell body to supply oxygen necessary for generation of electricity performed by the fuel cell. In the case where the portable equipment is provided with an air feed device which serves to cool the interior of an equipment, the fuel cell device further includes a water retention device (8) for recovering and retaining water formed in the fuel cell body, a humidifying device using the recovered water to humidify the hydrogen to be supplied to the fuel cell body, and a cell device casing receiving therein the above-mentioned components of the fuel cell device and connected electrically and mechanically removably to the equipment, the cell device casing (3) having an intake port (11) and an exhaust port (12) of the air feed device, and a device, by which the hydrogen storage unit can be inserted into and removed from the cell device casing, the hydrogen supply device being detachably connected to the hydrogen storage unit, an air flow produced by an air feed device provided on the equipment being fed to the fuel cell body, and providing oxygen necessary for the generation of electricity performed by the fuel cell.
    • 适用于安装在诸如个人计算机等的便携设备上的燃料电池装置包括燃料电池体(4),燃料电池体所需的氢化物氢存储单元(5),用于 控制来自氢存储单元的氢气流以控制燃料电池体中的燃料电池的操作;氢供给装置(6a),其将氢存储单元和燃料电池体相互连接,以从氢存储器 单元到燃料电池体,以及用于向燃料电池体供给空气以供给由燃料电池进行的发电所需的氧的供气装置(7)。 在便携式设备设置有用于冷却设备内部的空气供给装置的情况下,燃料电池装置还包括用于回收和保持形成在燃料电池体中的水的保水装置(8), 加湿装置,其使用回收的水来加氢供给到燃料电池主体的氢,以及容纳在燃料电池装置的上述部件的电池装置壳体,电气地和机械地可拆卸地连接到设备,电池装置壳体 (3)具有供气装置的进气口(11)和排气口(12),以及装置,通过该装置可以将蓄氢单元插入和移出电池装置壳体,氢气供应装置为 可拆卸地连接到氢存储单元,由设置在设备上的空气供给装置产生的空气流被馈送到燃料电池体,并且提供用于产生电气所需的氧气 城市由燃料电池执行。