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。

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。

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。

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。

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。

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。

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。

公开(公告)号：US07123952B2

公开(公告)日：2006-10-17

申请号：US10333023

申请日：2001-07-17

申请人： Kenji Nakai ,  Masahito Yoshizawa ,  Kohei Kawazoe ,  Keita Yamazaki ,  Satoshi Fujita ,  Itsuro Tamura

发明人： Kenji Nakai ,  Masahito Yoshizawa ,  Kohei Kawazoe ,  Keita Yamazaki ,  Satoshi Fujita ,  Itsuro Tamura

IPC分类号： A61B5/04

CPC分类号： A61B6/032 ,  A61B5/04005 ,  A61B5/04007 ,  A61B5/055 ,  A61B5/743 ,  A61B6/037 ,  A61B6/503 ,  A61B6/5247 ,  A61B8/5238 ,  G01R33/10

摘要： A magnetic field distribution measurement device (1) provides a non-contact magnetic field measurement on a subject's chest at a plurality of coordinates and forms therefrom time-series magnetic field distribution data. A first arithmetic device (2) in response generates image data representing a three-dimensional, intramyocardial current density distribution. A second arithmetic device (3) receives a plurality of tomographic image data separately obtained by a tomographic diagnosis apparatus and processes the data to generate three-dimensional, anatomical image data. A display device (4) receives these data and displays on an anatomical image an image representing an intramyocardial current density. This can facilitate identifying an anatomical, positional relationship of an abnormal, electrical reentry circuit caused in heart muscle. Furthermore, the anatomical image may be replaced with an image representing a normal stimulation propagation circuit and serving as a template.

摘要翻译： 磁场分布测量装置（1）以多个坐标提供对象胸部的非接触磁场测量，并从其形成时间序列磁场分布数据。 作为响应的第一运算装置（2）产生表示三维，心肌内电流密度分布的图像数据。 第二运算装置（3）接收由断层摄影诊断装置分别获得的多个断层图像数据，并处理该数据以生成三维解剖图像数据。 显示装置（4）接收这些数据并在解剖图像上显示表示心肌内电流密度的图像。 这可以有助于识别在心脏肌肉中引起的异常电再现电路的解剖学位置关系。 此外，解剖图像可以用表示正常刺激传播电路的图像代替，并且用作模板。

公开(公告)号：US20050069773A1

公开(公告)日：2005-03-31

申请号：US10951810

申请日：2004-09-29

申请人： Kenji Nakai

发明人： Kenji Nakai

IPC分类号： H01M10/05 ,  B60L15/00 ,  H01M2/10 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/42 ,  H01M4/58 ,  H01M4/48

CPC分类号： H01M10/0525 ,  B60L50/64 ,  B60L50/66 ,  B60L58/13 ,  B60L58/14 ,  B60L58/15 ,  B60L58/22 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0587 ,  H01M2010/4292 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/7061

摘要： A battery pack which is constituted by a plurality of lithium secondary batteries and which can prevent performance deterioration and has a long life is provided. The battery pack is manufactured by connecting in series four lithium ion batteries in which a lithium cobaltate is used for a positive active material and an amorphous carbon is used for a negative active material. In the battery, a percentage of the difference between positive electrode charging capacity and negative electrode charging capacity to capacity of the lithium secondary battery was set to 6%. The SOC difference among the four batteries was adjusted to 6 points or less. Even a battery having a low SOC is full charged, lithium oversupplied does not exceed a lithium amount capable of being occluded by a negative electrode at a battery having a high SOC, and thereby the active material does not deteriorate.

摘要翻译： 提供由多个锂二次电池构成并且可以防止性能劣化并且具有长寿命的电池组。 电池组通过串联连接四个锂离子电池制造，其中钴酸锂用于正极活性材料，无定形碳用于负极活性材料。 在电池中，正极充电容量与负极充电容量与锂二次电池容量之差的百分比设定为6％。 四个电池之间的SOC差异被调整到6点以下。 即使具有低SOC的电池也是充满电的，因此锂过剩的锂电量不会超过在具有高SOC的电池中被负极吸留的锂量，因此活性材料不会劣化。

公开(公告)号：US06509114B1

公开(公告)日：2003-01-21

申请号：US09525263

申请日：2000-03-14

申请人： Kenji Nakai ,  Takeshi Nakano ,  Kensuke Hironaka

发明人： Kenji Nakai ,  Takeshi Nakano ,  Kensuke Hironaka

IPC分类号： H01M400

CPC分类号： H01M10/0431 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0587 ,  Y02T10/7011

摘要： A cylindrical lithium-ion battery with excellent safety where abnormal heat generation and remarkable deformation of a battery container do not occur even at an abnormal time is provided. When an average diameter of a winding group 6 is A mm, an inner diameter of the battery container 5 is B mm, a longitudinal length of the winding group 6 except for lead pieces extending from the winding group 6 is H mm, and the number of windings where a layer of one unit comprising a negative electrode member/separator/negative electrode member/separator is wound around a shaft core 11 is W, a calculation value K obtained by a formula; K=(B−A)×(10000/(W×H) is set to 0.89 or more. When the calculation value K is 0.89 or more, a gap (B−A) between an outer periphery of the winding group 6 and an inner periphery of the battery container 5 that enables the winding group 6 to expand in its diameter direction at an abnormal time is properly secured.

摘要翻译： 提供了即使在异常时也不会发生具有优异安全性的圆柱形锂离子电池，其中异常发热和电池容器的显着变形。 当卷绕组6的平均直径为Amm时，电池容器5的内径为Bmm，除了从卷绕组6延伸的引线片以外的卷绕组6的纵向长度为Hmm， 其中包括负极构件/隔板/负极构件/隔板的一个单元的层缠绕在轴芯11上的绕组是W，通过公式获得的计算值K; K =（BA）×（10000 /（W×H））为0.89以上，当计算值K为0.89以上时，卷绕组6的外周与电池内周之间的间隙（BA） 适当地确保使绕组6在异常时沿其直径方向膨胀的容器5。