公开(公告)号：EP1995805A1

公开(公告)日：2008-11-26

申请号：EP08153349.9

申请日：2008-03-26

申请人： Hitachi Vehicle Energy, Ltd.

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

IPC分类号： H01M2/26 ,  H01M10/52

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

摘要： A lithium-ion secondary battery with lowered internal resistance. 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 collector disks (7) are disposed on both end faces of the winding group so as to face them, respectively, and materials for the current collector 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 collector 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 collector 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 take on a width expansion shape gradually expanding from a joint end portion with the positive electrode mixture non-application portion (1) toward the current collector disk (7). A volume of the joint portion (25) is thereby increased.

摘要翻译： 内部电阻降低的锂离子二次电池。 锂离子二次电池包括通过经由隔膜卷绕正极板和负极板而获得的绕组组。 正极合剂非涂布部（1）的端部在卷绕组的上部突出，负极混合剂非涂布部的端部向卷绕组的下部突出。 集电盘（7）分别设置在绕组组的两个端面上以面对它们，并且集电盘的材料与用于正极集电体和负极集电体的材料相同。 正极合剂非涂布部（1）的端部在正极侧的多个接合部位与集电盘（7）的位于卷绕组侧的面接合， 负极混合物非涂敷部分的端部在负极侧的多个接合部分处与位于绕组组的侧面的集电盘（7）的面接合。 一些接合部分形成接合部分具有从与正极混合物非涂覆部分（1）的接合端部朝向集电盘（7）逐渐扩大的宽度扩大形状。 接合部分（25）的体积由此增加。

公开(公告)号：EP1995805B1

公开(公告)日：2013-05-15

申请号：EP08153349.9

申请日：2008-03-26

申请人： Hitachi Vehicle Energy, Ltd.

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

IPC分类号： H01M2/26 ,  H01M10/52 ,  H01M10/04 ,  H01M4/70 ,  H01M10/0587

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

公开(公告)号：EP1953860A3

公开(公告)日：2009-07-08

申请号：EP08001206.5

申请日：2008-01-23

申请人： HITACHI VEHICLE ENERGY, LTD.

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

IPC分类号： H01M10/04

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 8 are formed in a positive current collecting plate 6. The recessed portions 8 are disposed opposite to the winding assembly 5. A laser beam is irradiated to welding protrusions 9 located between the recessed portions 8 to melt the welding protrusions. Here, since the end surface of a positive electrode foil 1 is uneven in height, the positive electrode foil 1 does not contact the positive current collecting plate 6 necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions 9 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.

公开(公告)号：EP2003716B1

公开(公告)日：2012-11-14

申请号：EP08153469.5

申请日：2008-03-27

申请人： Hitachi Vehicle Energy, Ltd.

发明人： Nakai, Kenji ,  Tada, Akinori ,  Sato, Seiichi ,  Arai, Masatsugu c/o Mechanical Engineering

IPC分类号： H01M2/26 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0587

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

公开(公告)号：EP1953860A2

公开(公告)日：2008-08-06

申请号：EP08001206.5

申请日：2008-01-23

申请人： HITACHI VEHICLE ENERGY, LTD.

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

IPC分类号： H01M10/04

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 8 are formed in a positive current collecting plate 6. The recessed portions 8 are disposed opposite to the winding assembly 5. A laser beam is irradiated to welding protrusions 9 located between the recessed portions 8 to melt the welding protrusions. Here, since the end surface of a positive electrode foil 1 is uneven in height, the positive electrode foil 1 does not contact the positive current collecting plate 6 necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions 9 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卷绕组件之间形成间隙时也能够进行焊接操作的结构，在正集流板6中形成凹部8.凹部8布置 与卷绕组件5相对。激光束照射到位于凹陷部分8之间的焊接突起9以熔化焊接突起。 在此，由于正极箔1的端面高度不均匀，因此正极箔1不必与正极集电板6接触。 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激光器加热，熔化和滴下焊接突起9来执行焊接操作。

公开(公告)号：EP1953860B1

公开(公告)日：2011-05-11

申请号：EP08001206.5

申请日：2008-01-23

申请人： HITACHI VEHICLE ENERGY, LTD.

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

IPC分类号： H01M10/04

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

公开(公告)号：EP2061106A1

公开(公告)日：2009-05-20

申请号：EP08019840.1

申请日：2008-11-13

申请人： HITACHI VEHICLE ENERGY, LTD.

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

IPC分类号： H01M2/26 ,  H01M10/04

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

摘要： A lithium ion secondary battery 30 comprises a case 10; a positive electrode foil 2 having a current collector foil on which a positive electrode material is coated; an negative electrode film 4 having a current collector film on which an negative electrode material is coated; a separator 5 sandwiched between the positive electrode film 2 and the negative electrode film 4, the films and the separator 5 being arranged in multiple layers to form a group of electrodes enclosed in the case 10, 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 7 is welded to the side of the exposed non-coated portion of the group of the electrodes. The periphery of the collector disc plate 7 has an annular portion 20, which is bent towards the group of electrodes.

摘要翻译： 锂离子二次电池30包括壳体10; 具有集电箔的正极箔2，正极材料被涂布在该集电箔上; 具有负极材料的集电体膜的负极膜4; 夹在正极膜2和负极膜4之间的隔膜5，膜和隔膜5以多层布置形成封闭在壳体10中的一组电极，与正极连接的正极集电板 电极组，以及与该组电极的负极侧连接的负极集电板。 每个集电器箔具有沿着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7中的至少一个被焊接到该组电极的暴露未涂覆部分的一侧。 集电盘片7的周边具有朝向电极组弯曲的环形部分20。

公开(公告)号：EP2264823A2

公开(公告)日：2010-12-22

申请号：EP10171980.5

申请日：2008-01-23

申请人： HITACHI VEHICLE ENERGY, LTD.

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

IPC分类号： H01M10/04

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 8 are formed in a positive current collecting plate 6. The recessed portions 8 are disposed opposite to the winding assembly 5. A laser beam is irradiated to welding protrusions 9 located between the recessed portions 8 to melt the welding protrusions 9. Here, since the end surface of a positive electrode foil 1 is uneven in height, the positive electrode foil 1 does not contact the positive current collecting plate 6 necessarily. The welding operation is performed by heating, melting, and dropping the welding protrusions 9 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. Thereby, welding portions 12 are obtained contacting the positive current collecting plate 6 with the positive electrode foil 1.

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动作的结构，在正极集电板6上形成有凹部8。 将激光束照射到位于凹部8之间的焊接突起9，以熔化焊接突起9.这里，由于正极箔1的端面高度不均匀，所以正极箔 1不一定接触正极集电板6。 通过在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9进行加热，熔化和滴落来进行焊接操作。 由此，使正极集电板6与正极箔1接触的焊接部12。

公开(公告)号：EP2264808A1

公开(公告)日：2010-12-22

申请号：EP10005768.6

申请日：2010-06-02

申请人： HITACHI VEHICLE ENERGY, LTD.

发明人： Nakai, Kenji ,  Tada, Akinori ,  Aota, Kinya ,  Matsumoto, Sho

IPC分类号： H01M2/02 ,  H01M2/20 ,  H01M2/22 ,  H01M2/30 ,  H01M2/26

CPC分类号： H01M2/0413 ,  H01M2/263 ,  H01M10/0525 ,  H01M10/0587

摘要： A sealed battery includes a battery container (7). The battery container (7) houses an electrode winding body, on which positive and negative electrode plates are wound via separators, together with a non-aqueous electrolytic solution. A positive electrode tab is bonded to a positive current collector ring (4) arranged at an upper side of the electrode winding body. A battery lid (18) to be a positive electrode external terminal is crimped and fixed to the battery container (7). The battery lid (18) has a diaphragm in which a cleaving valve (12) is formed. A coupling part is bonded to the diaphragm, and a stack lead (9) with a plurality of thin plates being laminated is bonded to the coupling part. In the stack lead (9), a total sum t of thicknesses of the thin plates is not more than a thickness T of the coupling part. Melting from the stack lead (9) to the coupling part by laser irradiation is optimized.

摘要翻译： 密封电池包括电池容器（7）。 电池容器（7）与非水电解液一起容纳电极卷绕体，正极和负极板通过隔板缠绕在电极绕组体上。 将正极片接合到布置在电极绕组体的上侧的正极集电环（4）上。 将作为正极外部端子的电池盖（18）压接固定在电池容器（7）上。 电池盖（18）具有形成有分解阀（12）的隔膜。 耦合部分结合到隔膜上，层叠有多个薄板的堆叠引线（9）结合到耦合部分。 在叠层引线（9）中，薄板的厚度总和t不大于耦合部件的厚度T. 优化了通过激光照射从堆叠引线（9）到耦合部分的熔化。

公开(公告)号：EP2003716A1

公开(公告)日：2008-12-17

申请号：EP08153469.5

申请日：2008-03-27

申请人： Hitachi Vehicle Energy, Ltd.

发明人： Nakai, Kenji ,  Tada, Akinori ,  Sato, Seiichi ,  Arai, Masatsugu c/o Mechanical Engineering

IPC分类号： H01M2/26 ,  H01M10/04

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

摘要： A lithium-ion secondary battery is provided where a current collecting disk and a current collector foil are joined to each other securely while damage of the foil is suppressed. 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 uncoated area of the positive electrode current collector foil and an uncoated area of the negative electrode current collector foil project at an upper portion and a lower portion of the winding group, respectively. The current collecting disk (7) has projecting ridge portions 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. The projecting ridge portions 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 with laser beam.

摘要翻译： 提供一种锂离子二次电池，其中集电盘和集电箔彼此牢固地接合，同时抑制了箔的损坏。 锂离子二次电池设置有通过经由隔膜卷绕正极板和负极板而获得的绕组组。 正极集电箔的未涂布区域和负极集电箔的未涂布区域分别在卷绕组的上部和下部突出。 集电盘（7）在其与卷绕组相对的面上具有突出的脊部，在与突出的脊部相对应的位置上具有面对卷绕组的平坦面部。 突出的脊部沿径向形成。 使正极混合物非涂布部分的端部和负极混合物非涂布部分的端部邻接在集电盘（7）的平坦表面部分上，并且通过照射投影 带有激光束的脊部分。