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    • 1. 发明专利
    • Lithium-ion secondary battery
    • 锂离子二次电池
    • JP2005235695A
    • 2005-09-02
    • JP2004046522
    • 2004-02-23
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • NAKAJIMA JUNJIOHATA TSUMORU
    • H01M2/16H01M4/02H01M4/13H01M4/131H01M4/62H01M10/05H01M10/052H01M10/0525H01M10/0564H01M10/0566H01M10/058H01M10/0587H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To shorten impregnation time of an electrolyte into a group of electrodes than that of a conventional one when current collection parts are formed in which electrode core exposed parts protruding from one and the other end surface of a column-shape electrode plate group are bent toward the center axis direction of the electrode plate group. SOLUTION: The lithium-ion secondary battery is equipped with: a positive electrode 11 and a negative electrode 12 made of a complex lithium oxide; a separator 13, a non-aqueous electrolyte; a porous membrane having electron insulation nature adhered on at least one surface of the positive electrode and the negative electrode; a positive electrode current collector 18; and a negative electrode current collector 19. The negative electrode and the positive electrode constitute a column-shaped electrode group in a wound state through the separator. The positive electrode and the negative electrode have a core exposed parts at their one end parts along the longitudinal direction respectively. The core exposed parts protrude further from the end part of the other electrode at the one and the other end surfaces of the column-shape electrode group respectively, and form current collection parts 21, 22 by bending toward the center axis direction of the electrode group, and the current collectors 18, 19 are jointed to the parts. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了缩短电解液在一组电极中的浸渍时间,与传统的电极组相比,当形成电流收集部分时,电极芯暴露部分从柱状物的一个和另一个端面突出, 形状的电极板组朝向电极板组的中心轴方向弯曲。 解决方案:锂离子二次电池配备有:正极11和由复合氧化锂制成的负极12; 分离器13,非水电解质; 具有电绝缘性的多孔膜附着在正极和负极的至少一个表面上; 正极集电体18; 和负极集电体19.负极和正极通过隔膜构成卷绕状态的柱状电极组。 正极和负极分别在其长度方向的一端部具有芯部露出部。 芯部露出部分分别在柱状电极组的一个和另一个端面处从另一个电极的端部进一步突出,并且通过朝着电极组的中心轴线方向弯曲形成集电部件21,22 并且集电器18,19连接到这些部件。 版权所有(C)2005,JPO&NCIPI
    • 4. 发明专利
    • Lithium-ion secondary battery and its manufacturing method
    • 锂离子二次电池及其制造方法
    • JP2005332809A
    • 2005-12-02
    • JP2005121275
    • 2005-04-19
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • OHATA TSUMORUNAKAJIMA JUNJIHAYASHI TETSUYAIKUTA SHIGEOFUJINO AKIKONAKAMURA EITARO
    • H01M10/05H01M4/13H01M4/139H01M4/62H01M10/052H01M10/0566H01M10/0569H01M10/058H01M4/04H01M4/02H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a lithium-ion secondary battery having a superior lifetime characteristic with superior productivity and stability.
      SOLUTION: This is a manufacturing method of the lithium-ion secondary battery having a process of obtaining a positive electrode by carrying a positive electrode mixture layer on a positive electrode core material, a process of obtaining a negative electrode by carrying a negative electrode mixture layer on a negative electrode core material, a process of forming a porous film having an electron insulating characteristic adhered to at least one surface of the positive electrode and the negative electrode, a process of constituting an electrode plate group by interposing a separator between the positive electrode and the negative electrode, and a process of impregnating a nonaqueous electrolytic solution into the electrode plate group. The process of forming the porous film has a process of preparing a porous film paste containing a film binder containing a thermal cross-linked resin and filler particles, and a process of heating a coated film obtained by applying the porous film paste on at least one surface of the positive electrode and the negative electrode.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供具有优异的寿命特性的锂离子二次电池,具有优异的生产率和稳定性。 解决方案:这是一种锂离子二次电池的制造方法,其具有通过在正极芯材上携带正极合剂层而获得正极的工艺,通过携带负极来获得负极的工艺 在负极芯材上形成电极复合层,形成具有附着在正极和负极的至少一个表面上的电子绝缘特性的多孔膜的工艺,通过在隔板之间插入隔板来构成电极板组的工艺 正极和负极,以及将非水电解液浸渍到电极板组中的工序。 形成多孔膜的方法具有制备含有含有热交联树脂和填料颗粒的膜粘合剂的多孔膜糊的方法,以及加热通过将多孔膜糊涂覆在至少一种 正极和负极的表面。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Lithium-ion secondary battery and manufacturing method thereof
    • 锂离子二次电池及其制造方法
    • JP2005294216A
    • 2005-10-20
    • JP2004111396
    • 2004-04-05
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • OHATA TSUMORUNAKAJIMA JUNJI
    • H01M2/16
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a lithium-ion secondary battery that includes a thin and uniform, highly flexible porous membrane, and that is superior in safety. SOLUTION: A lithium-ion secondary battery includes a positive electrode, composed of a positive electrode core material and a layer of depolarizing mix for cell of the positive electrode carried by the positive electrode core material, a negative electrode composed of a negative electrode core material and a layer of depolarizing mix for cell of the negative electrode carried by the negative electrode core material; a separator, non-aqueous electrolytic solution, and a porous membrane adhered on the surface of at least either the positive electrode or the negative electrode. The porous membrane is made up of an inorganic filler and a membrane binding agent, and if the incidence angle and the light-receiving angle on the surface of the porous membrane, which are measured by a measuring method of a relative specular glossiness as stipulated in JIS-Z8741, are 85 degrees, the relative-specular glossiness is 10% or higher. COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:提供一种锂离子二次电池,其包括薄且均匀,高度柔性的多孔膜,并且其安全性优异。 解决方案:锂离子二次电池包括由正极芯材料构成的正极和由正极芯材料承载的正极电池的去极化混合层,由负极芯材料构成的负极 电极芯材料和由负极芯材料承载的负极电池的去极化混合层; 分离器,非水电解液和粘附在至少正极或负极的表面上的多孔膜。 多孔膜由无机填料和膜结合剂构成,如果多孔膜表面的入射角度和受光角度通过如下所述的相对镜面光泽度的测定方法测定 JIS-Z8741为85度,相对光泽度为10%以上。 版权所有(C)2006,JPO&NCIPI
    • 6. 发明专利
    • Lithium-ion secondary battery and its manufacturing method
    • 锂离子二次电池及其制造方法
    • JP2005353584A
    • 2005-12-22
    • JP2005140521
    • 2005-05-13
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • OHATA TSUMORUNAKAJIMA JUNJIINOUE KAORUNAKAMURA EITARO
    • H01M2/16H01M4/13H01M4/139H01M10/05H01M10/052H01M10/0569H01M10/058H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To produce efficiently a lithium ion secondary battery in which deterioration of capacity accompanying repetition of charge and discharge cycle is suppressed.
      SOLUTION: The lithium ion secondary battery is equipped with a positive electrode including a positive electrode core material and a positive electrode mixture layer carried by the positive electrode core material, a negative electrode including a negative electrode core material and a negative electrode mixture layer carried by the negative electrode core material, a separator, a non-aqueous electrolytic solution containing a non-aqueous solvent including carbonic ester and a solute dissolved in the non-aqueous solvent, and a porous membrane adhered on one of the surface of the positive electrode and the negative electrode. The porous membrane contains an inorganic filler and a membrane binding agent, and the solubility parameter of the membrane binding agent is different from the solubility parameter of the non-aqueous solvent by one or more.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:为了有效地制造能够抑制伴随重复充放电循环的容量的劣化的锂离子二次电池。 解决方案:锂离子二次电池配备有正极,其包括由正极芯材料承载的正极芯材料和正极合剂层,负极包括负极芯材料和负极混合物 由负极芯材承载的层,隔膜,含有溶解在非水溶剂中的碳酸酯和溶质的非水溶剂的非水电解液和粘附在所述非水溶剂的表面之一上的多孔膜 正极和负极。 多孔膜含有无机填料和膜结合剂,膜结合剂的溶解度参数与非水溶剂的溶解度参数不同,为一种以上。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Lithium-ion secondary battery
    • 锂离子二次电池
    • JP2005222780A
    • 2005-08-18
    • JP2004028294
    • 2004-02-04
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • NAKAJIMA JUNJIOHATA TSUMORU
    • H01M10/05H01M4/13H01M4/139H01M4/62H01M10/052H01M10/0566H01M10/0587H01M10/40H01M4/02
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To secure enough safety or the like of a lithium-ion secondary battery even if a negative pole having higher acceptability of a lithium ion is used.
      SOLUTION: The lithium-ion secondary battery includes a positive pole consisting of a compound lithium oxide, a negative pole where a lithium ion moves in and out, a separator, electrolyte consisting of a nonaqueous solvent, and a porous membrane bonded at least to an either surface of the positive pole or the negative pole. The porous membrane is composed of an inorganic filler and a membrane binding agent. The membrane binding agent is non-water soluble and does not have a crystal melting point of less 200°C, and consists of a resin material having an initiation temperature of thermal deformation and the initiation temperature of decomposition at 200°C or more. The resin material has an acidic group, and the negative pole includes a negative pole binding agent and a thickener. The negative pole binding agent consists of a first rubber-type high polymer, while the thickener is composed of a water-soluble polymer.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:即使使用具有较高的锂离子可接受性的负极,也可以确保锂离子二次电池的足够的安全性等。 解决方案:锂离子二次电池包括由复合氧化锂组成的正极,锂离子进出的负极,隔膜,由非水溶剂组成的电解质和结合在 最小到正极或负极的任一表面。 多孔膜由无机填料和膜结合剂构成。 膜结合剂是非水溶性的,不具有低于200℃的结晶熔点,并且由具有热变形的起始温度和分解开始温度在200℃以上的树脂材料组成。 树脂材料具有酸性基团,负极包括负极结合剂和增稠剂。 负极粘合剂由第一橡胶类高分子组成,而增稠剂由水溶性聚合物组成。 版权所有(C)2005,JPO&NCIPI