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    • 84. 发明专利
    • Separator for fuel cell, fuel cell stack, fuel cell electric vehicle and manufacturing method of separator for fuel cell
    • 燃料电池分离器,燃料电池堆,燃料电池车和燃料电池分离器的制造方法
    • JP2007042577A
    • 2007-02-15
    • JP2006045577
    • 2006-02-22
    • Nissan Motor Co Ltd日産自動車株式会社
    • CHIBA HIROTAKAUCHIYAMA NORIKOKANO MAKOTONAKAMURA YASUTAKA
    • H01M8/02C23C8/38H01M8/10
    • Y02P70/56
    • PROBLEM TO BE SOLVED: To provide a separator for a fuel cell capable of keeping contact resistance between the separator and an electrode at a low value in an oxidizing environment, excelling in corrosion resistance and reduced in cost; and to provide its manufacturing method. SOLUTION: This separator 3 for a fuel cell is formed into a structure including: a base layer 13 formed of stainless steel containing Fe as a main constituent, Cr and at least either Ni or Mo; a first nitrided layer 15 directly formed on the base layer 13, containing Fe as a main constituent and having an M 4 N type crystalline structure where an N-atom is arranged in the octahedron void of a unit cell center in a face-centered cubic lattice which is formed with a transition metal atom selected from Fe, Cr, Ni and Mo; and a second nitrided layer 16 formed on the first nitrided layer 15, separated from the base layer 13 and selected from a single layer of CrN, a composite layer of CrN and an M 4 N type crystalline structure, and a two-layer nitrided layer comprising an intermediate layer of CrN and an M 4 N type crystalline structure and a CrN layer formed on the intermediate layer. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供一种在氧化环境中能够使隔板和电极之间的接触电阻保持在低值的燃料电池用隔板,耐腐蚀性优异,成本降低; 并提供其制造方法。 解决方案:用于燃料电池的分离器3形成为包括:由以Fe为主要成分的不锈钢形成的基底层13,Cr和至少Ni或Mo; 直接形成在基底层13上的第一氮化层15,其含有Fe作为主要成分并且具有在单元电池的八面体空间内配置有N原子的M 4 N型晶体结构 以选自Fe,Cr,Ni和Mo的过渡金属原子形成的面心立方晶格中心; 以及形成在第一氮化层15上的第二氮化层16,其从基层13分离并选自单层CrN,CrN和M 4N型晶体结构的复合层, 以及包含CrN和M 4> N型结晶结构的中间层和在中间层上形成的CrN层的双层氮化层。 版权所有(C)2007,JPO&INPIT
    • 86. 发明专利
    • Transition metal nitride, separator for fuel cell, fuel cell stack, fuel cell vehicle, method for producing transition metal nitride and method for producing separator for fuel cell
    • 过渡金属氮化物,燃料电池用分离器,燃料电池堆,燃料电池车,制造过渡金属氮化物的方法及制造燃料电池分离器的方法
    • JP2006257550A
    • 2006-09-28
    • JP2006038126
    • 2006-02-15
    • Nissan Motor Co Ltd日産自動車株式会社
    • UCHIYAMA NORIKOCHIBA HIROTAKAKANO MAKOTONAKAMURA YASUTAKA
    • C23C8/38H01M8/00H01M8/02H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To provide a low-cost transition metal nitride in which contact resistance generated between a separator and electrodes is low, and which has excellent corrosion resistance, and to provide a separator for a fuel cell, a fuel cell stack and also a fuel cell vehicle mounted therewith. SOLUTION: The transition metal nitride is obtained by subjecting the surface of a base material composed of stainless steel foil comprising at least one or more kinds of elements selected from the group consisting of Fe, Cr, Ni and Mo to nitriding treatment. The transition metal nitride has an M4N type crystal structure where a nitrogen atom is arranged in the gap of an octahedron in the center of each unit cell in a face-centered cubic lattice formed by transition metal atoms selected from the group consisting of Fe, Cr, Ni and Mo, is formed on the whole surface in the base material, and is also continuously formed from the surface to a depth direction. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种低成本的过渡金属氮化物,其中隔板和电极之间产生的接触电阻低,并且具有优异的耐腐蚀性,并且提供燃料电池用隔板,燃料电池 堆叠以及与其一起安装的燃料电池车。 解决方案:过渡金属氮化物是通过将由选自Fe,Cr,Ni和Mo组成的组中的至少一种以上的元素构成的不锈钢箔的基材表面进行氮化处理而得到的。 过渡金属氮化物具有M4N型晶体结构,其中氮原子被布置在每个晶胞的中心的八面体的间隙中,以由Fe,Cr组成的组中的过渡金属原子形成的面心立方晶格 ,Ni和Mo形成在基材的整个表面上,并且也从表面到深度方向连续形成。 版权所有(C)2006,JPO&NCIPI
    • 88. 发明专利
    • Manufacturing method of fuel cell stack and fuel cell stack
    • 燃料电池堆栈和燃料电池堆栈的制造方法
    • JP2006173090A
    • 2006-06-29
    • JP2005259206
    • 2005-09-07
    • Nissan Motor Co Ltd日産自動車株式会社
    • KURAMOCHI TAKEHARUHIRAO TAKAYUKIOE NOBUFUMITANAKA YASUEUCHIYAMA NORIKOCHIBA HIROTAKA
    • H01M8/02H01M8/10
    • Y02P70/56
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of a fuel cell stack without increase of cost or weight due to the increased number of components, and capable of obtaining a uniform electrical contact among structuring components structuring the fuel cell stack. SOLUTION: After separators 15 are formed by molding a fuel gas channel or an oxidant gas channel at least made of irregularity shapes by a press working in a region of a metal plate contributing to power generation, the separators 15, 15 are arranged to pinch a membrane electrode assembly 14 from either side so that convex directions of warpage generated at the time of press working face each other. Then, outer peripheral edge parts of the separators 15, 15 arranged on top and bottom of the membrane electrode assembly 14 are calked and fixed tightly for integral coupling to adhere the separators 15, 15 to the membrane electrode assembly 14. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种燃料电池堆的制造方法,而不会由于部件数量的增加而增加成本或重量,并且能够在构成燃料电池堆的构造部件之间获得均匀的电接触。 解决方案:通过在有助于发电的金属板的区域中通过压制加工至少由不规则形状的燃料气体通道或氧化剂气体通道模制隔板15之后,分离器15,15被布置 从任一侧挤压膜电极组件14,使得在冲压加工时产生的翘曲方向彼此面对。 然后,将布置在膜电极组件14的顶部和底部的隔板15,15的外周边缘部分紧紧地固定并固定,以便整体联接以将隔板15,15粘附到膜电极组件14上。版权所有: (C)2006,JPO&NCIPI
    • 90. 发明专利
    • Separator for fuel cell, fuel cell, and fuel cell vehicle
    • 燃料电池,燃料电池和燃料电池车辆的分离器
    • JP2005032578A
    • 2005-02-03
    • JP2003271185
    • 2003-07-04
    • Nissan Motor Co Ltd日産自動車株式会社
    • CHIBA HIROTAKAOTANI KEIZO
    • B60K1/04H01M8/00H01M8/02H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To prevent the degradation of generating characteristics due to increase in contacting resistance and variations in gas flow, by preventing the warping of separators forming a metal thin plate in corrugated form. SOLUTION: The fuel cell separators, which are arranged opposed to each other on each electrode face on both sides of a solid electrolyte and has gas passages 11, 17 by which an oxidant gas or a fuel gas is supplied on the side opposed to the electrode face and cooling water passages 18 on the opposite side face to the electrode face, comprises respectively the gas passages 11, 17 and cooling water passages 18 by forming the plate material in corrugated form and with concave and convex shapes. The sum of the passage width dimension or sum of passage cross section of these gas passages 11, 17 is made equal to the sum of the passage width dimension or passage cross section of the cooling water passages 18 formed on the opposite side face of these. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:通过防止形成波纹形式的金属薄板的分离器的翘曲来防止由于接触电阻的增加和气流的变化引起的发生特性的劣化。 解决方案:燃料电池隔板在固体电解质两侧的每个电极面上彼此相对设置,并且具有气体通道11,17,通过该气体通道将氧化剂气体或燃料气体供给到相对侧 在与电极面相反的侧面上的电极面和冷却水通道18分别包括气体通道11,17和冷却水通道18,通过将波纹形式的板材形成为凹凸形状。 这些气体通道11,17的通道宽度尺寸或通道横截面积之和的总和等于形成在这些气体通道11,17的相对侧面上的冷却水通道18的通道宽度尺寸或通道横截面之和。 版权所有(C)2005,JPO&NCIPI