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    • 1. 发明申请
    • SEALED SECONDARY BATTERY
    • 密封二次电池
    • US20120052343A1
    • 2012-03-01
    • US13318820
    • 2010-03-19
    • Satoshi SuzukiKatsumi Ito
    • Satoshi SuzukiKatsumi Ito
    • H01M10/34H01M4/64H01M2/08H01M2/02
    • H01M2/34H01M2/022H01M2/023H01M2/263H01M2/345H01M10/0431
    • Disclosed is a sealed secondary battery provided with a current cut-off device which employs an inexpensive and uncomplicated construction, without the need to mount a separate current cut-off device on the battery body. A sealed secondary battery (10) comprises a battery casing (11) and a sealing plate (12), an electrode body (21) and current collecting plates (22, 22) provided on the inside of this casing (11). A contact section (11c) formed as part of the bottom (11a) of this battery casing (11) is bowed further inwards towards the negative electrode-side current collecting plate (22b) than the peripheral section of the bottom (11a) of this battery casing (11). At this contact section (11c), the inside face of the bottom (11a) of the battery casing contacts the current collecting plate (22b) at the negative electrode end, but this electrical contact between the contact section (11c) and the current collecting plate (22b) at the negative electrode end is cut off when outward swelling of the contact section (11c) takes place, produced by a rise in internal pressure in the casing in a sealed condition.
    • 公开了一种具有电流切断装置的密封二次电池,其采用廉价且不复杂的结构,而不需要在电池体上安装单独的电流切断装置。 密封的二次电池(10)包括电池壳体(11)和密封板(12),设置在该壳体(11)的内部的电极体(21)和集电板(22,22)。 形成为该电池壳体(11)的底部(11a)的一部分的接触部(11c)比该电池壳体(11)的底部(11a)的周边部朝向负极侧集电板(22b)进一步向内弯曲 电池外壳(11)。 在该接触部分(11c)处,电池壳体的底部(11a)的内表面在负极端处接触集电板(22b),但是接触部分(11c)与集电体 当密封状态下壳体内部压力升高而产生接触部分(11c)的向外膨胀时,在负极端部处的板(22b)被切断。