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    • 6. 发明专利
    • Cylindrical secondary battery and method of manufacturing the same
    • 圆柱二次电池及其制造方法
    • JP2012094473A
    • 2012-05-17
    • JP2011021605
    • 2011-02-03
    • Sanyo Electric Co Ltd三洋電機株式会社
    • YAMASHITA TATSUOCHI MAKOTOSUGII HIROMASASHINOHARA YUJINISHIDA AKIRAMATSUI YUAKAHO ATSUTOSHIKITAOKA KAZUHIRO
    • H01M2/26H01M2/04H01M10/04
    • H01M2/263H01M2/0413H01M2/1276H01M10/0422H01M10/286Y10T29/4911
    • PROBLEM TO BE SOLVED: To provide a cylindrical secondary battery with excellent output characteristics by reducing internal resistance through the use of a current-collecting lead with excellent current-collecting properties.SOLUTION: A cylindrical secondary battery of the present invention is configured such that a current-collecting lead 10 is welded to a collector welded to an upper portion of an electrode group and the current-collecting lead 10 is also welded to a sealing assembly sealing an opening of an outer can. The current-collecting lead 10 formed to have a substantially same diameter as an outer diameter of the collector comprises: a flat surface part 11 welded to the collector; and a top part 12 which is curved and protrudingly formed in a substantially dome shape from the flat surface part 11, and which is welded to the sealing assembly. A central opening 12a is formed at a central portion of the top part. Around the central opening 12a, a plurality of welding projections 12c are formed to protrude toward the sealing assembly. The welding projections serve as welding spots to the sealing assembly. The top part 12 is deformed by pressing force from the sealing assembly to be brought into surface contact with a corner portion of a convex portion formed on a lower surface of the sealing assembly.
    • 要解决的问题:通过使用集电引线具有优异的集电特性,通过降低内阻来提供具有优异输出特性的圆柱形二次电池。 解决方案:本发明的圆柱形二次电池被构造成使得集流引线10焊接到焊接到电极组的上部的集电体上,并且集电引线10也被焊接到密封 组件密封外罐的开口。 形成为具有与集电体的外径大致相同的直径的集电引线10包括:焊接到集电体的平坦表面部分11; 以及顶部12,其从平坦表面部分11弯曲并突出地形成为大致圆顶形状,并且焊接到密封组件。 中央开口12a形成在顶部的中心部分。 围绕中央开口12a形成多个焊接突起12c朝向密封组件突出。 焊接突起用作密封组件的焊接点。 顶部12通过来自密封组件的压力而变形,以与形成在密封组件的下表面上的凸部的角部面接触。 版权所有(C)2012,JPO&INPIT
    • 8. 发明专利
    • Electrode for alkali storage battery and alkali storage battery
    • 用于阿尔卡利储存电池和碱性蓄电池的电极
    • JP2011233499A
    • 2011-11-17
    • JP2010282221
    • 2010-12-17
    • Panasonic Corpパナソニック株式会社
    • IMAMURA KOYO
    • H01M4/70H01M10/04
    • H01M10/286H01M4/70Y02E60/124
    • PROBLEM TO BE SOLVED: To provide a battery having a high output by increasing the volume ratio of an active material in an electrode and reducing reaction resistance of the battery, and increase the lifetime of the battery by suppressing dropout of the active material when the electrode is wound or laminated.SOLUTION: In an electrode for alkali storage battery, a conductive core material 17 serves as a current collector, plural substantially rectangular through holes 18 are formed in the core material 17 to be arranged linearly in parallel to the longitudinal direction of the core material 17. The through holes 18 are arranged so as to be displaced in the longitudinal direction of the core material 17 every row of the linearly arranged through holes 18. Here, a displacement amount when the through holes 18 are arranged so as to be displaced from one another is defined so that a displacement amount which is less than the half of the sum of the dimension of the through hole 18 in the longitudinal direction of the core material 17 and the interval between the through holes 18 is provided between the rows of the through holes 18 in the width direction of the core material 17.
    • 解决的问题:为了通过增加电极中的活性物质的体积比并且降低电池的反应电阻来提供具有高输出的电池,并且通过抑制活性物质的脱落来增加电池的寿命 当电极缠绕或层压时。 解决方案:在碱性蓄电池用电极中,导电性芯材17作为集电体,在芯材17上形成有多个大致矩形的通孔18,以与芯的长度方向平行地配置 通孔18布置成在每一行线性布置的通孔18中沿着芯材17的纵向位移。这里,当通孔18被布置成位移时的位移量 彼此之间的位移量被定义为使得小于芯体17的纵向方向上的通孔18的尺寸和通孔18之间的间隔之和的一半的位移量设置在 通孔18在芯材17的宽度方向上。版权所有:(C)2012,JPO&INPIT