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    Assembled battery
    1.
    发明公开
    Assembled battery 有权
    Montierte Batterie

    公开(公告)号：EP1920916A1

    公开(公告)日：2008-05-14

    申请号：EP07105783.0

    申请日：2007-04-05

    申请人： HITACHI VEHICLE ENERGY, LTD.

    发明人： Ishizu, Takenori 302 Suehiro Mansion, ,  Kojima, Tooru

    IPC分类号： B32B15/01 ,  H01M2/20

    CPC分类号： H01M2/206 ,  H01M10/052 ,  H01R4/029 ,  Y02T10/7011

    摘要： The present invention provides an assembled battery which can improve output density. The assembled batter is configured by connecting four unit cells in series. The unit cells are disposed in parallel such that their polarities are alternate. Unit cells adjacent to each other are connected by a connection member 40. The connection member 40 is composed of a stacked metal plate obtained by stacking two metal plates 40a and 40b. Copper and nickel producing binary alloy by welding are used for the metal plates 40a and 40b, respectively. Since a volume resistance of copper is about 1/4 of that of nickel, a ratio of volume resistances of metals used for the metal plates 40a and 40b, respectively, becomes 1/2 or less. Both end portions of the connection member 40 are joined to a positive electrode external terminal of one of the adjacent unit cells and a negative electrode external terminal of the other by resistance welding, respectively. Coppcr and nickel used for the metal plates 40a and 40b are alloyed by resistance welding.

    摘要翻译： 本发明提供一种可以提高输出密度的组合电池。 组装的面板通过串联连接四个单元电池来配置。 单元电池平行设置，使得它们的极性是交替的。 彼此相邻的单元电池通过连接构件40连接。连接构件40由通过堆叠两个金属板40a和40b而获得的堆叠金属板构成。 铜和镍生产二元合金通过焊接分别用于金属板40a和40b。 由于铜的体积电阻约为镍的体积电阻的1/4，金属板40a和40b的金属体积电阻的比例分别为1/2以下。 连接构件40的两端部分别通过电阻焊接接合到相邻单元电池中的一个的正极外部端子和另一个的负极外部端子。 用于金属板40a和40b的Coppcr和镍通过电阻焊合金化。

    Secondary battery
    2.
    发明公开
    Secondary battery 审中-公开
    Sekundärbatterie

    公开(公告)号：EP1816699A1

    公开(公告)日：2007-08-08

    申请号：EP06121447.4

    申请日：2006-09-28

    申请人： HITACHI VEHICLE ENERGY, LTD.

    发明人： Kojima, Tooru ,  Ishizu, Takenori

    IPC分类号： H01M10/04 ,  H01M10/14 ,  H01M10/28

    CPC分类号： H01M10/0436 ,  H01M2/0287 ,  H01M4/505 ,  H01M4/587 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/058 ,  H01M2006/5094

    摘要： A secondary battery having an excellent capacity maintenance factor or charging/discharging efficiency is provided. A lithium-ion battery comprises an electrode group that a positive electrode and a negative electrode which respective of active materials for the positive and negative electrodes is coated on both surfaces of a collectingmember. An area S1 of a portion of the negative electrode 7 not facing the positive electrode 6 is set to be not more than 10% of an area S2 of a portion of the negative electrode 7 facing the positive electrode 6. An influence that the portion not facing the positive electrode affects a battery reaction is controlled, and the decrease in the capacity maintenance factor or the charging/discharging efficiency according to cycling use can be depressed.

    摘要翻译： 提供具有优异的容量维持系数或充放电效率的二次电池。 锂离子电池包括电极组，正极和负极各自用于正极和负极的活性材料涂覆在集电体的两个表面上。 负极7的不面对正极6的部分的面积S1被设定为负极7的面对正极6的部分的面积S2的10％以下。影响部分不 面对正极影响电池反应的控制，并且可以抑制根据循环使用的容量维持系数或充放电效率的降低。