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    • 1. 发明专利
    • リチウムイオン二次電池
    • 锂离子二次电池
    • JP2014235925A
    • 2014-12-15
    • JP2013117640
    • 2013-06-04
    • 株式会社日立製作所Hitachi Ltd
    • OKAI MAKOTONISHIMURA KATSUNORINISHIMURA ETSUKOSUZUKI SHUICHI
    • H01M10/052H01M4/36H01M4/38H01M4/62H01M10/0566
    • Y02E60/122
    • 【課題】シリコン粒子を含む負極活物質を用いたリチウムイオン二次電池であって、シリコン粒子にリチウムイオンが挿入した際の力学的歪み強度を低減し、充放電サイクル特性がよいリチウムイオン二次電池を提供する。【解決手段】本発明によるリチウムイオン二次電池は、リチウム塩を含む電解液と、充電前の平均半径R0が280a[nm]以下0.5[nm]以上であるシリコン粒子を含む負極活物質を有する負極とを備え、時間a[時間]で満充電される。または、本発明によるリチウムイオン二次電池は、リチウム塩を含む電解液と、シリコン粒子を含む負極活物質を有する負極とを備え、負極活物質は、充電時にリチウムイオンが挿入されない領域を中心に有し、この領域の平均半径RCが充電前のシリコン粒子の平均半径R0の20%以下であるシリコン粒子を含む。【選択図】図1
    • 要解决的问题:提供一种使用包含硅颗粒的负极活性物质布置的锂离子二次电池,并且设置为当锂离子进入每个硅颗粒时降低机械应变强度,从而实现良好的充放电 循环特性。解决方案:根据本发明的锂离子二次电池包括:包含锂盐的电解质; 以及在充电前,具有负极活性物质的负极活性物质,其含有平均半径R为0.5 [nm]〜280a [nm]的硅粒子,前提是锂离子二次电池在a [小时]的时间内充满电。 或者,锂离子二次电池包括:包含锂盐的电解质; 以及具有含有硅粒子的负极活性物质的负极。 由负极活性物质构成的硅粒子的中心部分在充电时不具有锂离子进入的区域, 该区域的平均半径Rof不大于充电前硅颗粒的平均半径Rof的20%。
    • 5. 发明专利
    • Fuel cell using organic fuel
    • 燃料电池使用有机燃料
    • JP2011054285A
    • 2011-03-17
    • JP2009199195
    • 2009-08-31
    • Hitachi Ltd株式会社日立製作所
    • NISHIMURA KATSUNORISUGANO MASAYOSHIANDO SHINSUKE
    • H01M8/04H01M8/10
    • H01M8/04798H01M8/04388H01M8/04559H01M8/1011Y02E60/523
    • PROBLEM TO BE SOLVED: To provide a method for controlling an optimum fuel concentration according to an output without a sensor for measuring the fuel concentration.
      SOLUTION: The fuel cell has a membrane-electrode assembly and a passage for circulating fuel or an oxidant, and uses a liquid organic compound for fuel. The fuel cell further includes a fuel supply unit which intermittently or periodically changes the supply rate of fuel supplied to the fuel cell, a cell measuring instrument which measures a signal of a voltage or an output of the fuel cell, and an arithmetic processing unit which arithmetically processes the supply rate and the signal to correct the supply rate. By the fuel cell, the optimum fuel concentration can be easily controlled according to the output by periodically varying the fuel concentration from a reference fuel concentration to thereby measure the voltage or the output, and measuring a variation range of the voltage or the output to thereby determine whether the reference fuel concentration is appropriate.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种根据输出控制最佳燃料浓度的方法,而不需要用于测量燃料浓度的传感器。 解决方案:燃料电池具有膜 - 电极组件和用于循环燃料或氧化剂的通道,并且使用液态有机化合物作为燃料。 燃料电池还包括间歇地或周期性地改变供给到燃料电池的燃料的供给速率的燃料供给单元,测量燃料电池的电压或输出的信号的电池测量装置,以及运算处理单元, 算术处理供应速率和信号以纠正供应速率。 通过燃料电池,通过从参考燃料浓度周期性地改变燃料浓度,可以根据输出容易地控制最佳燃料浓度,从而测量电压或输出,并测量电压或输出的变化范围 确定参考燃料浓度是否合适。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Fuel cell power generation system
    • 燃料电池发电系统
    • JP2011054284A
    • 2011-03-17
    • JP2009199194
    • 2009-08-31
    • Hitachi Ltd株式会社日立製作所
    • NISHIMURA KATSUNORIYAMAGA MASASHIKUBOTA OSAMUTAKAHASHI HIROSHI
    • H01M8/04H01M8/00H01M8/02H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To secure stable power generation by rapidly raising the temperature of a fuel cell even if the fuel cell reaches a freezing point of water in temperature.
      SOLUTION: A solid polymer fuel cell includes a separator having an anode flow passage for distributing fuel; a separator having a cathode flow passage for supplying an oxidizer; and a membrane/electrode assembly composed of two electrodes and an electrolyte film, the membrane/electrode assembly having a power generation cell held between the separators. The fuel cell further includes a resistor provided between the two adjacent separators so that resistance between the separators is reduced in a low-temperature state of at least the freezing temperature of water or lower to attain a current-carriable state. The resistor does not make electricity flow substantially at a temperature not lower than at least room temperature.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:即使燃料电池达到水温的凝固点,通过快速提高燃料电池的温度来确保稳定的发电。 解决方案:固体聚合物燃料电池包括具有用于分配燃料的阳极流动通道的隔板; 具有用于供给氧化剂的阴极流路的隔板; 以及由两个电极和电解质膜组成的膜/电极组件,该膜/电极组件具有保持在隔板之间的发电单元。 燃料电池还包括设置在两个相邻的隔板之间的电阻器,使得在至少水的冷冻温度的低温状态下,分离器之间的电阻降低,以获得电流载体状态。 电阻器不会使电力基本上在不低于至少室温的温度下流动。 版权所有(C)2011,JPO&INPIT
    • 7. 发明专利
    • Fuel cell system
    • 燃油电池系统
    • JP2010267477A
    • 2010-11-25
    • JP2009117443
    • 2009-05-14
    • Hitachi Ltd株式会社日立製作所
    • YAMAGA MASASHINISHIMURA KATSUNORIKUBOTA OSAMU
    • H01M8/04H01M8/10
    • H01M8/04753H01M8/04223H01M8/04559
    • PROBLEM TO BE SOLVED: To provide a fuel cell system in which, even if starting and stopping are repeated, generation of a local cell is suppressed and performance deterioration of the cell is made very small.
      SOLUTION: The fuel cell system includes a fuel cell 1, a hydrogen supply means to supply hydrogen to an anode passage 3 of the fuel cell, an air volume adjusting means which adjusts the air volume of the air supplied to a cathode passage 2 of the fuel cell and the air discharged from the cathode passage, an external load connected to the fuel cell, and a control part which controls the operation of the hydrogen supply means, the air volume adjusting means, and the external load. The control part controls, when starting of the fuel cell system, to fill air of less than saturated vapor pressure into the cathode passage of the fuel cell and, after filling the air, to circulate the air continuously in the cathode passage of the fuel cell, and to take out the load from the fuel cell.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种燃料电池系统,其中即使重复起动和停止,抑制了局部电池的产生,并且使电池的性能劣化变得非常小。 解决方案:燃料电池系统包括燃料电池1,向燃料电池的阳极通道3供应氢气的氢气供应装置,调节供应到阴极通道的空气的空气体积的空气量调节装置 2的燃料电池和从阴极通道排出的空气,连接到燃料电池的外部负载,以及控制氢供给装置,风量调节装置和外部负载的操作的控制部。 控制部在燃料电池系统起动时,控制在燃料电池的阴极通路内填充少于饱和蒸气压的空气,在充填空气后,使空气连续地在燃料电池的阴极通路中循环 并从燃料电池取出负载。 版权所有(C)2011,JPO&INPIT
    • 9. 发明专利
    • Polymer electrolyte fuel cell and power generation system loading the same
    • 聚合物电解质燃料电池和发电系统
    • JP2009181713A
    • 2009-08-13
    • JP2008017525
    • 2008-01-29
    • Hitachi Ltd株式会社日立製作所
    • NISHIMURA KATSUNORIYAMAGA MASASHIKUBOTA OSAMU
    • H01M8/02H01M8/00H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To provide a polymer electrolyte fuel cell with a seal structure so made to secure enough gas tightness while preventing entry of impurities from cooling water into electrodes and an electrolyte film. SOLUTION: The polymer electrolyte fuel cell, provided with cells structured to pinch a solid polymer electrolyte film and electrodes between a pair of separators having a cooling water manifold circulating cooling water and a gas manifold circulating gas, further includes a gas seal going around a gas flow channel face and a cooling water seal going around a periphery of the cooling water manifold. Moreover, the cooling water seal is fitted further outside than an outer edge of the solid polymer electrolyte film, so that the electrolyte film is not to be in direct contact with the cooling water. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供具有这样制成的密封结构的聚合物电解质燃料电池,以确保足够的气密性,同时防止杂质从冷却水进入电极和电解质膜。 解决方案:提供具有构造成夹持固体聚合物电解质膜的单元和具有冷却水歧管循环冷却水和气体歧管循环气体的一对分离器之间的电极的聚合物电解质燃料电池还包括气密封 围绕气流通道面和围绕冷却水歧管的周边的冷却水密封。 此外,冷却水密封件比固体聚合物电解质膜的外边缘进一步配合,使得电解质膜不与冷却水直接接触。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Solid polymer electrolyte fuel cell system
    • 固体聚合物电解质燃料电池系统
    • JP2007323813A
    • 2007-12-13
    • JP2006149093
    • 2006-05-30
    • Hitachi Ltd株式会社日立製作所
    • NISHIMURA KATSUNORIOKUDA YUUKIIMAHASHI JINICHI
    • H01M8/04H01M8/10
    • H01M8/04126H01M8/1007
    • PROBLEM TO BE SOLVED: To provide a solid polymer electrolyte fuel cell system equipped with a humidifier to humidify a gas suitably even if an operation condition such as an increase/decrease of a flow volume of dry gas or humid gas is changed.
      SOLUTION: The solid polymer electrolyte fuel cell is provided with a fuel cell stack having a fuel cell with a proton conductive electrolyte membrane pinched by a pair of electrodes and a humidifier into which humid gas containing cathode gas or anode gas introduced into the fuel cell stack and steam are introduced. The humidifier is provided with a porous separation layer 101 to separate a flow of the introduced humid gas from the cathode gas or the anode gas and a hydrophilic discharging layer 102 formed on a side where the cathode gas or the anode gas are flowing.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使改变诸如干燥气体或潮湿气体的流量的增加/减少的操作条件,提供配备有加湿器的固体聚合物电解质燃料电池系统,以适当地加湿气体。 解决方案:固体聚合物电解质燃料电池设置有具有燃料电池的燃料电池堆,燃料电池具有被一对电极夹持的质子传导电解质膜和加湿器,其中含有阴极气体或阳极气体的湿气引入到 引入燃料电池堆和蒸汽。 加湿器设置有多孔分离层101,以将引入的湿气与阴极气体或阳极气体的流动以及在阴极气体或阳极气体流动的一侧上形成的亲水性排出层102分离。 版权所有(C)2008,JPO&INPIT