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    • 7. 发明申请
    • ALKALINE BATTERY
    • 碱性电池
    • US20090197165A1
    • 2009-08-06
    • US11995736
    • 2006-05-18
    • Seiji WadaYasushi SumihiroTakeshi Okubo
    • Seiji WadaYasushi SumihiroTakeshi Okubo
    • H01M2/08
    • H01M2/1241H01M2/0235H01M2/0413H01M2/0421H01M2/08H01M6/08H01M10/28H01M2004/023H01M2300/0014
    • An alkaline battery includes: a battery can (2) encasing a positive mixture (4), a separator (5) and a gel-like negative electrode (6); and a sealing assembly for fitting to an opening of the battery can (11), the sealing assembly including: a gasket (7) including an inner cylindrical portion (7a), an outer cylindrical portion (7b) that engages with an inner periphery of the opening of the battery can, a linking portion (7c) that connects the inner cylindrical portion to the outer cylindrical portion, and a thin portion (8) that is formed between the linking portion and the inner cylindrical portion, with a negative electrode collector (9) being placed through the inner cylindrical portion and through the gel-like negative electrode; and a negative electrode terminal plate (10) that is welded to a head (9a) of the negative electrode collector and has its outer edge engaging with the inside of the outer cylindrical portion of the gasket, wherein the opening of the battery can is sealed by the edge of the opening of the battery can as the edge is bent inward and axially crimped while the seal assembly is being supported by a groove (12) formed at the opening of the battery can to engage with the opening. In this alkaline battery, the linking portion of the gasket includes an annular disc (7f) that is uniform in thickness and has a two-step profile with a bent portion (7g) formed at its middle portion as viewed along the radial direction. The alkaline battery has a reduced axial dimension of the sealing portion and thus achieves improved discharge performance while retaining its safety and leakage-proof performance.
    • 碱性电池包括:包装正极混合物(4)的电池罐(2),隔膜(5)和凝胶状负极(6); 以及密封组件,用于装配到电池罐(11)的开口,所述密封组件包括:垫圈(7),其包括内圆柱形部分(7a),外圆柱形部分(7b),其与内周边 电池壳体的开口部,连接内筒部与外筒部的连结部(7c)和形成于连结部与内筒部之间的薄壁部(8c),与负极集电体 (9)穿过所述内圆柱形部分并穿过所述凝胶状负极; 和负极端子板(10),其被焊接到负极集电体的头部(9a),并且其外边缘与垫圈的外圆筒部分的内部相接合,其中电池壳体的开口被密封 当密封组件由形成在电池壳的开口处的凹槽(12)支撑以与开口接合时,边缘被向内弯曲并且轴向地卷曲,从而电池罐的开口的边缘。 在这种碱性电池中,垫圈的连接部分包括厚度均匀且具有沿着径向方向观察到的在其中间部分处形成的弯曲部分(7g)的两阶段轮廓的环形盘(7f)。 碱性电池具有减小的密封部分的轴向尺寸,从而在保持其安全性和防漏性能的同时实现改进的放电性能。