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    Lithium-ion secondary battery
    1.
    发明授权
    Lithium-ion secondary battery 有权
    锂离子二次电池

    公开(公告)号：US07989107B2

    公开(公告)日：2011-08-02

    申请号：US12057347

    申请日：2008-03-27

    申请人： Kenji Nakai ,  Akinori Tada ,  Seiichi Sato ,  Masatsugu Arai

    发明人： Kenji Nakai ,  Akinori Tada ,  Seiichi Sato ,  Masatsugu Arai

    IPC分类号： H01M4/02 ,  H01M4/13 ,  H01M2/16 ,  H01M2/18 ,  H01M2/26 ,  H01M2/28

    CPC分类号： H01M10/0525 ,  H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y02T10/7011

    摘要： A lithium-ion secondary battery where a current collecting member and a foil are joined to each other securely while damage of the foil is suppressed is provided. The lithium-ion secondary battery is provided with a winding group obtained by winding a positive electrode plate and a negative electrode plate via a separator. An end portion of a positive electrode mixture non-application portion and an end portion of a negative electrode mixture non-application portion project at an upper portion and a lower portion of the winding group, respectively. Current collecting disks 7 are disposed so as to face both end faces of the winding group, respectively. The current collecting disk 7 has projecting ridge portions 8 on a face thereof opposite to the winding group and flat face portions facing the winding group at positions corresponding to the projecting ridge portions 8. The projecting ridge portions 8 are formed radially. The end portion of the positive electrode mixture non-application portion and the end portion of the negative electrode mixture non-application portion are caused to abut on the flat face portions of the current collecting disks 7 and joining is performed by irradiating the projecting ridge portions 8 with laser beam. The flat face portions of the current collecting disks 7 abut on the end portion of the positive electrode mixture non-application portion and the end portion of the negative electrode mixture non-application portion approximately evenly.

    摘要翻译： 提供了一种锂电池，其中集电构件和箔片在损坏箔片的同时牢固地彼此接合。 锂离子二次电池具有经由隔板卷绕正极板和负极板而获得的绕组。 正极混合物非施加部分的端部和负极混合物非施加部分的端部分别在绕组的上部和下部突出。 集电盘7分别设置成面对卷绕组的两个端面。 集电盘7在与突出脊部8相对的位置上具有与绕组组相对的面上的突出脊部8和与突出脊部8对应的位置处的卷绕组的平面部。突出脊部8径向地形成。 使正极混合物非施加部分的端部和负极混合物非施加部分的端部抵接在集电盘7的平面部分上，并且通过照射突出脊部分 8带激光束。 集电盘7的平面部分大致均匀地抵接在正极混合物非施加部分的端部和负极混合物非施加部分的端部。

    LITHIUM ION SECONDARY BATTERY
    2.
    发明申请
    LITHIUM ION SECONDARY BATTERY 失效
    锂离子二次电池

    公开(公告)号：US20090136835A1

    公开(公告)日：2009-05-28

    申请号：US12269081

    申请日：2008-11-12

    申请人： Kenji Nakai ,  Akinori Tada ,  Masatsugu Arai ,  Kinya Aota

    发明人： Kenji Nakai ,  Akinori Tada ,  Masatsugu Arai ,  Kinya Aota

    IPC分类号： H01M2/18 ,  B23K26/20

    CPC分类号： H01M10/0525 ,  H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y02T10/7011 ,  Y10T29/49108

    摘要： A lithium ion secondary battery comprises a case; a positive electrode foil having a current collector foil on which a positive electrode material is coated; an negative electrode film having a current collector film on which an negative electrode material is coated; a separator sandwiched between the positive electrode film and the negative electrode film, the films and the separator being arranged in multiple layers to form a group of electrodes enclosed in the case, a positive collector disc plate connected to the positive electrode side of the group of the electrodes, and an negative collector disc plate connected to the negative electrode side of the group of the electrodes. Each of the current collector foils has a non-coated portion extended along one side of the foils, a part or the entire of the non-coated portion being exposed from a side of the separator. At least one of the collector disc plate is welded to the side of the exposed non-coated portion of the group of the electrodes. The periphery of the collector disc plate has an annular portion, which is bent towards the group of electrodes.

    摘要翻译： 锂离子二次电池包括壳体; 具有集电箔的正极箔，其上涂覆有正极材料; 具有集电体膜的负极膜，其上涂覆有负极材料; 夹在正极膜和负极膜之间的隔膜，膜和隔膜被布置成多层以形成封闭在壳体中的一组电极，正极集电板盘连接到正极集电体的正极侧 所述电极和与所述电极组的负极侧连接的负极集电板。 每个集电箔具有沿箔的一侧延伸的未涂覆部分，未涂覆部分的一部分或全部从分离器的侧面露出。 集电盘片中的至少一个焊接到该组电极的暴露未涂覆部分的一侧。 集电盘片的周边具有朝向该组电极弯曲的环形部分。

    SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURING METHOD
    3.
    发明申请
    SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURING METHOD 审中-公开
    二次电池和二次电池制造方法

    公开(公告)号：US20110076535A1

    公开(公告)日：2011-03-31

    申请号：US12957455

    申请日：2010-12-01

    申请人： Kinya Aota ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    发明人： Kinya Aota ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    IPC分类号： H01M10/36

    CPC分类号： H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y10T29/49108 ,  Y10T29/49114

    摘要： In a secondary battery, for providing a structure which can enable a welding operation even when a gap is formed between a current collecting plate and a winding assembly, recessed portions are formed in a positive current collecting plate. The recessed portions are disposed opposite to the winding assembly. A laser beam is irradiated to welding protrusions located between the recessed portions to melt the welding protrusions. Here, since the end surface of a positive electrode foil is uneven in height, the positive electrode foil does not contact the positive current collecting plate necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions by the use of a YAG laser under the welding condition of a laser power of 900 W and a welding speed 2 m/min.

    摘要翻译： 在二次电池中，为了提供即使在集电板和绕组组件之间形成间隙也能进行焊接操作的结构，在正极集电板中形成有凹部。 凹部设置成与卷绕组件相对。 将激光束照射到位于凹部之间的焊接突起，以熔化焊接突起。 这里，由于正极箔的端面高度不均匀，所以正极箔不必接触正极集电板。 在900W的激光功率和2m / min的焊接速度的焊接条件下，通过使用YAG激光器对焊接突起进行加热，熔化，滴下，进行焊接作业。

    Secondary battery and secondary battery manufacturing method
    4.
    发明授权
    Secondary battery and secondary battery manufacturing method 有权
    二次电池和二次电池的制造方法

    公开(公告)号：US07867644B2

    公开(公告)日：2011-01-11

    申请号：US12018619

    申请日：2008-01-23

    申请人： Kinya Aota ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    发明人： Kinya Aota ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    IPC分类号： H01M4/00

    CPC分类号： H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y10T29/49108 ,  Y10T29/49114

    摘要： In a secondary battery, for providing a structure which can enable a welding operation even when a gap is formed between a current collecting plate and a winding assembly, recessed portions are formed in a positive current collecting plate. The recessed portions are disposed opposite to the winding assembly. A laser beam is irradiated to welding protrusions located between the recessed portions to melt the welding protrusions. Here, since the end surface of a positive electrode foil is uneven in height, the positive electrode foil does not contact the positive current collecting plate necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions by the use of a YAG laser under the welding condition of a laser power of 900 W and a welding speed 2 m/min.

    摘要翻译： 在二次电池中，为了提供即使在集电板和绕组组件之间形成间隙也能进行焊接操作的结构，在正极集电板中形成有凹部。 凹部设置成与卷绕组件相对。 将激光束照射到位于凹部之间的焊接突起，以熔化焊接突起。 这里，由于正极箔的端面高度不均匀，所以正极箔不必接触正极集电板。 在900W的激光功率和2m / min的焊接速度的焊接条件下，通过使用YAG激光器对焊接突起进行加热，熔化，滴下，进行焊接作业。

    Lithium ion secondary battery
    5.
    发明授权
    Lithium ion secondary battery 失效
    锂离子二次电池

    公开(公告)号：US08568916B2

    公开(公告)日：2013-10-29

    申请号：US12269081

    申请日：2008-11-12

    申请人： Kenji Nakai ,  Akinori Tada ,  Masatsugu Arai ,  Kinya Aota

    发明人： Kenji Nakai ,  Akinori Tada ,  Masatsugu Arai ,  Kinya Aota

    IPC分类号： H01M2/26

    CPC分类号： H01M10/0525 ,  H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y02T10/7011 ,  Y10T29/49108

    摘要： A lithium ion secondary battery comprises a case; a positive electrode foil having a current collector foil on which a positive electrode material is coated; an negative electrode film having a current collector film on which an negative electrode material is coated; a separator sandwiched between the positive electrode film and the negative electrode film, the films and the separator being arranged in multiple layers to form a group of electrodes enclosed in the case, a positive collector disc plate connected to the positive electrode side of the group of the electrodes, and an negative collector disc plate connected to the negative electrode side of the group of the electrodes. Each of the current collector foils has a non-coated portion extended along one side of the foils, a part or the entire of the non-coated portion being exposed from a side of the separator. At least one of the collector disc plate is welded to the side of the exposed non-coated portion of the group of the electrodes. The periphery of the collector disc plate has an annular portion, which is bent towards the group of electrodes.

    摘要翻译： 锂离子二次电池包括壳体; 具有集电箔的正极箔，其上涂覆有正极材料; 具有集电体膜的负极膜，其上涂覆有负极材料; 夹在正极膜和负极膜之间的隔膜，膜和隔膜被布置成多层以形成封闭在壳体中的一组电极，正极集电板盘连接到正极集电体的正极侧 所述电极和与所述电极组的负极侧连接的负极集电板。 每个集电箔具有沿箔的一侧延伸的未涂覆部分，未涂覆部分的一部分或全部从分离器的侧面露出。 集电盘片中的至少一个焊接到该组电极的暴露未涂覆部分的一侧。 集电盘片的周边具有朝向该组电极弯曲的环形部分。

    SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURING METHOD
    6.
    发明申请
    SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURING METHOD 有权
    二次电池和二次电池制造方法

    公开(公告)号：US20080182166A1

    公开(公告)日：2008-07-31

    申请号：US12018619

    申请日：2008-01-23

    申请人： Kinya AOTA ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    发明人： Kinya AOTA ,  Kenji Nakai ,  Masatsugu Arai ,  Akinori Tada

    IPC分类号： H01M10/36 ,  B23K28/00

    CPC分类号： H01M2/263 ,  H01M10/0431 ,  H01M10/0587 ,  Y10T29/49108 ,  Y10T29/49114

    摘要： In a secondary battery, for providing a structure which can enable a welding operation even when a gap is formed between a current collecting plate and a winding assembly, recessed portions are formed in a positive current collecting plate. The recessed portions are disposed opposite to the winding assembly. A laser beam is irradiated to welding protrusions located between the recessed portions to melt the welding protrusions. Here, since the end surface of a positive electrode foil is uneven in height, the positive electrode foil does not contact the positive current collecting plate necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions by the use of a YAG laser under the welding condition of a laser power of 900 W and a welding speed 2 m/min.

    摘要翻译： 在二次电池中，为了提供即使在集电板和绕组组件之间形成间隙也能进行焊接操作的结构，在正极集电板中形成有凹部。 凹部设置成与卷绕组件相对。 将激光束照射到位于凹部之间的焊接突起，以熔化焊接突起。 这里，由于正极箔的端面高度不均匀，所以正极箔不必接触正极集电板。 在900W的激光功率和2m / min的焊接速度的焊接条件下，通过使用YAG激光器对焊接突起进行加热，熔化，滴下，进行焊接作业。

    Lithium-ion secondary battery
    7.
    发明授权
    Lithium-ion secondary battery 有权
    锂离子二次电池

    公开(公告)号：US08053105B2

    公开(公告)日：2011-11-08

    申请号：US12057329

    申请日：2008-03-27

    申请人： Kenji Nakai ,  Akinori Tada ,  Kinya Aota

    发明人： Kenji Nakai ,  Akinori Tada ,  Kinya Aota

    IPC分类号： H01M2/02

    CPC分类号： H01M10/0587 ,  H01M2/263 ,  H01M4/70 ,  H01M10/0431

    摘要： The present invention provides a lithium-ion secondary battery which can suppress internal resistance to a small value. The lithium-ion secondary battery includes a winding group obtained by winding a positive electrode plate and a negative electrode plate via a separator. An end portion of a positive electrode mixture non-application portion 1 projects at an upper portion of the winding group, while an end portion of a negative electrode mixture non-application portion projects at a lower portion of the winding group. Current collecting disks 7 are disposed on both end faces of the winding group so as to face them, respectively, and materials for the current collecting disks are the same materials as those for a positive electrode current collector and a negative electrode current collector. An end portion of the positive electrode mixture non-application portion 1 is joined to a face of the current collecting disk 7 positioned on the side of the winding group at a plurality of joint portions on the positive electrode side, while an end portion of the negative electrode mixture non-application portion is joined to a face of the current collecting disk 7 positioned on the side of the winding group at a plurality of joint portions on the negative electrode side. Some of the joint portions form joint portions taking on a width expansion shape gradually expanding from a joint end portion with the positive electrode mixture non-application portion 1 toward the current collecting disk 7. A volume of the joint portion 25 is increased.

    摘要翻译： 本发明提供一种能够将内部电阻抑制到小的锂离子二次电池。 锂离子二次电池包括经由隔板卷绕正极板和负极板而获得的绕组组。 正极混合物非施加部分1的端部在绕组组的上部突出，而负极混合物非施加部分的端部在绕组组的下部突出。 集电盘7分别设置在绕组组的两个端面上以面对它们，集电盘的材料与正极集电体和负极集电体的材料相同。 正电极混合物非施加部分1的端部在正极侧的多个接合部分处连接到位于绕组组侧面上的集电盘7的表面， 在负极侧的多个接合部，将负极混合物非施加部接合到位于绕组组侧的集电盘7的面。 一些接合部形成从正极混合物非施加部1的接合端部朝向集电盘7逐渐扩大的宽度膨胀形状的接合部。接合部25的体积增大。