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    • 2. 发明专利
    • Method of manufacturing lithium ion secondary battery
    • 制造锂离子二次电池的方法
    • JP2011082101A
    • 2011-04-21
    • JP2009235366
    • 2009-10-09
    • Furukawa Battery Co Ltd:The古河電池株式会社
    • AIDA MIYUABE HIDETOSHIKUBOTA MASAAKI
    • H01M10/0585H01M4/1393H01M4/587H01M10/0569H01M10/0587
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To have stable battery characteristics exerted in various use environments without damaging ionic conductivity at low temperature, with electrolyte solution made available with low viscosity. SOLUTION: The manufacturing method includes: steps (S11, S12) of kneading graphite powder with its surface hydrophilicized, a water-soluble thickener, and a water dispersion binder, and making aqueous slurries having the water-soluble thickener and the water-soluble binder coated on the graphite powder; a step (S13) of coating the aqueous slurries on an negative electrode collector to make an negative electrode; a step (S16) of forming an electrode group by winding around or laminating a positive electrode and the negative electrode through a separator; and steps (S17, S18) of housing the electrode group in a vessel, injecting and sealing in it nonaqueous electrolyte solution at least containing chained carbonate and with a circular carbonate of 5 volume% or less. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:在各种使用环境中具有稳定的电池特性,而不会在低温下损害离子电导率,使用低粘度的电解质溶液。 解决方案:制造方法包括:将石墨粉末与其表面亲水化的步骤(S11,S12),水溶性增稠剂和水分散性粘合剂,并制备具有水溶性增稠剂和水的水性浆料 涂在石墨粉末上的可溶性粘合剂; 在负极集电体上涂布水性浆料以制作负极的步骤(S13); 通过绕过或层叠正极和负极通过隔板形成电极组的步骤(S16); 以及容纳电极组的容器中的步骤(S17,S18),至少含有链状碳酸酯和5体积%以下的圆形碳酸酯的非水电解液的注入和密封。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Manufacturing method of lithium ion secondary battery and lithium ion secondary battery
    • 锂离子二次电池和锂离子二次电池的制造方法
    • JP2011181204A
    • 2011-09-15
    • JP2010041639
    • 2010-02-26
    • Furukawa Battery Co Ltd:The古河電池株式会社
    • AIDA MIYUABE HIDETOSHIKUBOTA MASAAKI
    • H01M10/0567H01M4/1393H01M4/36H01M4/587H01M10/0525H01M10/0569H01M10/0585H01M10/0587
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To enable to obtain charge and discharge cycle characteristics equivalent to or better than a case in which electrolyte solution using ethylene carbonate is utilized, with the use of electrolyte solution mainly composed of propylene carbonate as well as to improve low-temperature characteristics and aim at cost reduction. SOLUTION: An anode of a lithium ion secondary battery is made by coating on an anode collector aqueous slurry formed by kneading graphite powder with a surface hydrophilicized as an anode active material, a water-soluble thickener and a water-dispersed binder. Nonaqueous electrolyte solution contains 5 to 50 vol.% of propylene carbonate and 95 to 5 vol.% of mixture solution mixing dimethyl carbonate and an organic matter with an unsaturated bond in a molecule, capable of reduction polymerization and capable of solvating with lithium. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了获得与使用使用碳酸亚乙酯的电解液相当或更好的充放电循环特性,使用主要由碳酸丙烯酯组成的电解质溶液以及改进 低温特性,旨在降低成本。 解决方案:锂离子二次电池的阳极通过涂布在通过将石墨粉末与亲水化作为阳极活性材料的表面,水溶性增稠剂和水分散粘合剂混合的阳极集电体水性浆料上涂布而制成。 非水电解质溶液含有5至50体积%的碳酸丙烯酯和95至5体积%的混合溶液,其在分子中混合碳酸二甲酯和具有不饱和键的有机物,能够还原聚合并能够与锂溶剂化。 版权所有(C)2011,JPO&INPIT