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    • 2. 发明专利
    • Method for manufacturing nonaqueous electrolyte secondary battery
    • 制造非水电解二次电池的方法
    • JP2008091259A
    • 2008-04-17
    • JP2006272471
    • 2006-10-04
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • TATEISHI SAORIYAMAMOTO NORIHIROFURUTA HIROAKI
    • H01M4/02H01M4/505H01M4/525H01M10/05H01M10/0525H01M10/0567H01M10/0568H01M10/058
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery that is satisfactory in the cycle characteristics and reliability, by forming a satisfactory coating on a negative electrode at initial charging.
      SOLUTION: In the nonaqueous electrolyte secondary battery comprising an electrode plate group containing a positive electrode plate that holds a positive electrode active material, a negative electrode plate that holds a negative electrode active material, and a separator; and a nonaqueous electrolyte containing 0.5-1.5 mol/l lithium salt containing lithium hexafluorophosphate (LiPF
      6 ) and a nonaqueous solvent, the initial charge of a charging current is carried out at a hour rate of 1.0 or lower, with respect to the rated capacity in an environment of -5 to 10°C, to form the satisfactory coating on a negative electrode surface.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:提供一种在循环特性和可靠性上令人满意的非水电解质二次电池,通过在初始充电时在负极上形成令人满意的涂层。 解决方案:在包含含有保持正极活性物质的正极板的电极板组,保持负极活性材料的负极板和隔膜的非水电解质二次电池中, 和含有0.5-1.5mol / l含六氟磷酸锂(LiPF SB SB)的非水电解质和非水溶剂的非水电解质,充电电流的初始充电以1.0或更低的小时速率进行 相对于在-5〜10℃的环境下的额定容量,在负极面上形成令人满意的涂层。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Cylindrical lithium-ion secondary battery
    • 圆柱形锂离子二次电池
    • JP2006156007A
    • 2006-06-15
    • JP2004342231
    • 2004-11-26
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • FURUTA HIROAKIYAMAMOTO NORIHIROKINOSHITA KAZUNARI
    • H01M10/05H01M10/052H01M10/0566H01M10/0587
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a cylindrical lithium-ion secondary battery having high safety performance and high cycle characteristics under abnormally high temperatures.
      SOLUTION: The cylindrical lithium-ion secondary battery is formed by spirally winding a positive plate in which an active material is applied to a belt-shaped current collector and a negative plate in which an active material is applied to a belt-shaped current collector through a separator to constitute a wound group, and sealing the wound group in a metallic outer packaging case together with a nonaqueous electrolyte, the ratio ψ1/ψ2 of the diameter (ψ1) of a space installed in the central part to the outer diameter (ψ2) of the wound group is made 0.20-0.30, and the ratio ψ2/ψ3 of the outer diameter (ψ2) of the wound group to the inner diameter (ψ3) of the battery case is made 0.94-0.97.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供在异常高温下具有高安全性能和高循环特性的圆柱形锂离子二次电池。 解决方案:圆柱形锂离子二次电池通过将带有活性材料的正极板螺旋卷绕到带状集电体和负极板上而形成,其中活性材料被施加到带状集电体上 集电器通过分隔器构成卷绕组,并将金属外包装盒中的卷绕组与非水电解质一起密封,安装在中心部分的外部的直径(ψ1)与外部电极的直径(ψ1)的比值ψ1/ψ2 伤口组的直径(ψ2)为0.20-0.30,卷绕组的外径(ψ2)与电池壳体的内径(ψ3)的比ψ2/ψ3为0.94〜0.97。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Method of manufacturing negative electrode plate for nonaqueous secondary battery
    • 制造负极电极板用于非二次电池的方法
    • JP2006092760A
    • 2006-04-06
    • JP2004272845
    • 2004-09-21
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • INATOMI YASUHIROKURODA AKIRAYAMAMOTO NORIHIROKASHIWAGI KOKUKIYO
    • H01M4/62H01M4/133H01M4/1393H01M4/587H01M10/05
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a negative electrode plate having little variation in weight when a paste is applied thereto by making the paste to have high dispersion and stability, thus, provide a nonaqueous secondary battery having good life time property by forming the battery using this negative electrode plate. SOLUTION: A graphite as active material contains iron of not more than 500 ppm. A kneading step of slurry for forming a negative electrode coating film includes at least the following three steps; a first kneading step of kneading aqueous solution of thickener after the graphite is added thereto; a diluting and kneading step of kneading and diluting the kneaded material made in the first kneading step with the aqueous solution of thickener; and a finishing kneading step of adding a binder to the kneaded material made in the diluting and kneading step and kneading the resultant material to make a paste, whereby shearing force of kneading in the first kneading step is stronger than that in the diluting and kneading step and the finishing kneading step. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种通过使糊剂具有高分散性和稳定性而施加糊剂时重量变化小的负极板,从而通过形成具有良好寿命特性的非水二次电池 使用该负极板的电池。

      解决方案:作为活性物质的石墨含有不大于500ppm的铁。 用于形成负极涂膜的浆料的捏合步骤至少包括以下三个步骤: 在添加石墨之后捏合增稠剂水溶液的第一捏合步骤; 将第一捏合步骤中制成的捏合材料与增稠剂水溶液进行捏和稀释的稀释和捏合步骤; 以及将稀释和捏合步骤中制成的捏和材料粘合剂加入并捏合所得材料以制成糊料的精整捏合步骤,由此在第一捏合步骤中的捏合剪切力比稀释和捏合步骤中的剪切力强 和精整捏合步骤。 版权所有(C)2006,JPO&NCIPI

    • 6. 发明专利
    • Nonaqueous electrolyte secondary battery
    • 非电解电解质二次电池
    • JP2006004873A
    • 2006-01-05
    • JP2004182662
    • 2004-06-21
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • SANO HIDEKIYAMAMOTO NORIHIROKINOSHITA KAZUNARI
    • H01M2/16H01M10/05H01M10/0566H01M10/0587
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery with excellent charge/discharge cycle characteristics and preservation characteristics.
      SOLUTION: The nonaqueous electrolyte secondary battery is composed of: an electrode plate group made by winding around a cathode plate 11 and an anode plate 12 through a separator consisting of two or more layers porous resin; nonaqueous electrolyte; and an outer package body housing the electrode plate group and the nonaqueous electrolyte. (1) The separator is made by laminating two or more layers of separators with different coefficients of elasticity in a thickness direction, and (2) a formula of (K
      - /K)>1.1 is satisfied on condition that a coefficient of elasticity of a layer in contact with an anode in a thickness direction is K
      - , and that of a layer with the least coefficient of elasticity in the thickness direction is K.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供具有优异的充放电循环特性和保存特性的非水电解质二次电池。 解决方案:非水电解质二次电池包括:通过由两层或更多层多孔树脂组成的隔膜围绕阴极板11和阳极板12缠绕而制成的电极板组; 非水电解液 以及容纳电极板组和非水电解质的外包装体。 (1)隔板通过在厚度方向上层叠具有不同的弹性系数的两层以上的隔板而制成,(2)满足式(K - / SP / K)> 1.1的式 条件是在厚度方向上与阳极接触的层的弹性系数为K - ,厚度方向上具有最小弹性系数的层的屈服系数为K < 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2004127913A
    • 2004-04-22
    • JP2003160969
    • 2003-06-05
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • KATO FUMIOOURA TAKAFUMIFUKUMOTO YUSUKEYAMAMOTO NORIHIROFUJIWARA SHOZO
    • H01M2/02H01M4/133H01M4/36H01M4/587H01M4/62H01M4/66H01M10/05H01M10/0525H01M10/0566H01M10/0587H01M4/02H01M4/58H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To improve charge and discharge cycle characteristics of a high energy-density lithium secondary battery, and improve or maintain discharge rate characteristics, low-temperature discharge characteristics, and safety (heat resistance). SOLUTION: The lithium secondary battery is prepared by using a negative electrode wherein active material composed of a mixture consisting of an artificial graphite particle A that has been obtained by kneading and granulating the base material made by crushing a bulk mesophase pitch, a pitch, and/or a thermosetting resin in a softened state and by making it carbonized/graphitized, and a sherical graphite particle B of which circularity is large, is fixed on the copper core material. This enables to improve the charge and discharge cycle characteristics of the high energy-density lithium secondary battery, and at the same time to provide the battery that is superior in the discharge rate characteristics, the low-temperature discharge characteristics, and safety (heat resistance). COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提高高能量密度锂二次电池的充放电循环特性,提高或保持放电特性,低温放电特性和安全性(耐热性)。 解决方案:锂二次电池通过使用负极制备,其中由由通过捏合和粒化通过粉碎体中间相沥青制成的基材而获得的人造石墨颗粒A的混合物组成的活性材料, 沥青和/或软化状态的热固性树脂,并使其碳化/石墨化,并且将环形度大的球形石墨颗粒B固定在铜芯材上。 这能够提高高能量密度锂二次电池的充放电循环特性,同时提供具有优异的放电特性,低温放电特性和安全性(耐热性)的电池 )。 版权所有(C)2004,JPO