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    • 2. 发明申请
    • SECONDARY BATTERY
    • 二次电池
    • US20100273033A1
    • 2010-10-28
    • US12767309
    • 2010-04-26
    • Masato FUJIKAWATomohiko Yokoyama
    • Masato FUJIKAWATomohiko Yokoyama
    • H01M2/00
    • H01M2/263H01M2/348H01M10/0525H01M10/0587
    • Positive and negative electrode plates are respectively joined to positive and negative electrode terminals through leads. At least one of the leads joined to the positive or negative electrode plate is made of a stack of first and second metal layers. The first metal layer has a resistance higher than that of the second metal layer. The second metal layer has a melting point lower than that of the first metal layer. When a short-circuit current flows in the secondary battery, current is concentrated in the second metal layer to cause a blowout of the second metal layer, and then, an increase in an heat generation amount due to an increase in a current density of a short-circuit current flowing in the first metal layer causes a blowout of the first metal layer, thereby causing a blowout of the lead to interrupt the short-circuit current.
    • 正极板和负极板通过引线分别连接到正极端子和负极端子。 连接到正极板或负极板的引线中的至少一个由第一和第二金属层的叠层制成。 第一金属层的电阻高于第二金属层。 第二金属层的熔点低于第一金属层的熔点。 当在二次电池中流过短路电流时,电流集中在第二金属层中,引起第二金属层的吹出,由于电流密度增加导致发热量增加 在第一金属层中流动的短路电流导致第一金属层的吹出,从而导致引线的吹出中断短路电流。
    • 3. 发明申请
    • LITHIUM SECONDARY BATTERY
    • 锂二次电池
    • US20100178541A1
    • 2010-07-15
    • US12730687
    • 2010-03-24
    • Masato FUJIKAWAKaoru InoueMikinari Shimada
    • Masato FUJIKAWAKaoru InoueMikinari Shimada
    • H01M6/10
    • H01M2/1673H01M2/1646H01M2/166H01M4/131H01M4/133H01M4/62H01M10/052H01M10/0587H01M2004/021Y02T10/7011
    • A lithium secondary battery having enhanced safety, which includes an electrode group, a non-aqueous electrolyte and a battery can for housing them. The electrode group includes: a positive electrode having a strip-shaped positive electrode current collector and a material mixture layer carried thereon; a negative electrode having a strip-shaped negative electrode current collector and a material mixture layer carried thereon; a separator; and a porous heat resistant layer. The positive and negative electrodes are spirally wound with the separator and the porous heat resistant layer interposed therebetween. An outermost surface of the electrode group includes an exposed portion of either of the positive and negative electrode current collectors. The exposed portion faces an inner surface of the battery can with the separator interposed therebetween, and has opposite polarity to that of the battery can.
    • 具有增强的安全性的锂二次电池,其包括电极组,非水电解质和用于容纳它们的电池壳。 电极组包括:具有带状正极集电体和承载在其上的材料混合层的正极; 具有带状负极集电体和承载在其上的材料混合层的负极; 分隔符 和多孔耐热层。 正极和负极用隔板螺旋卷绕,并且多孔耐热层插入其间。 电极组的最外表面包括正极集电体和负极集电体中的任一个的露出部分。 暴露部分面对电池壳体的内表面,隔膜间隔开,并且具有与电池罐相反的极性。