公开(公告)号：US10181596B2

公开(公告)日：2019-01-15

申请号：US15214765

申请日：2016-07-20

Applicant: Sanyo Electric Co., Ltd.

Inventor： Takuya Yamawaki ,  Eiji Okutani ,  Masakazu Yamada

IPC: H01M2/06 ,  H01M2/34 ,  H01M2/26

Abstract: A positive electrode sheet is electrically connected to a positive terminal with a positive electrode current collector, a deformable plate, and a conductive member interposed therebetween. When the pressure inside a battery is higher than or equal to a predetermined value, the deformable plate is deformed toward a sealing plate and an annular groove formed on a base portion of the positive electrode current collector is broken due to deformation of the deformable plate so that a conductive path between the positive electrode sheet and the positive terminal is disconnected. A first insulating member disposed between the deformable plate and the base portion of the positive electrode current collector includes a first rotation preventing protrusion on a surface thereof on a wound electrode body side and outside an outer circumferential edge of the base portion of the positive electrode current collector.

公开(公告)号：US09755217B2

公开(公告)日：2017-09-05

申请号：US15487166

申请日：2017-04-13

Applicant: SANYO Electric Co., Ltd.

Inventor： Takayuki Hattori ,  Yoshinori Yokoyama ,  Eiji Okutani ,  Yasuhiro Yamauchi

IPC: H01M2/34 ,  H01M10/0587 ,  H01M2/12

CPC classification number: H01M2/345 ,  H01M2/00 ,  H01M2/02 ,  H01M2/0217 ,  H01M2/024 ,  H01M2/04 ,  H01M2/043 ,  H01M2/12 ,  H01M2/1223 ,  H01M2/1235 ,  H01M2/362 ,  H01M10/02 ,  H01M10/0587 ,  H01M2200/20 ,  H01M2220/10 ,  H01M2220/20

Abstract: A prismatic secondary battery includes a prismatic hollow outer body having a mouth and a bottom; a flat electrode assembly, a positive electrode collector, a negative electrode collector, and an electrolyte, all of which are stored in the prismatic outer body; a sealing plate sealing up the mouth of the prismatic outer body; and a positive electrode terminal attached to the sealing plate in an electrically insulated manner. The sealing plate includes a gas release valve and an electrolyte pour hole and further includes, on the front face, a concaved flat face having an identification code. With the prismatic secondary battery of the invention, a jig for assembly or the like is unlikely to come into contact with the identification code during an assembly process of the prismatic secondary battery, hence the identification code is unlikely to be abraded, and the traceability is unlikely to be lost.

公开(公告)号：US09741985B2

公开(公告)日：2017-08-22

申请号：US14614821

申请日：2015-02-05

Applicant: SANYO Electric Co., Ltd.

Inventor： Eiji Okutani ,  Yoshinori Yokoyama ,  Takayuki Hattori ,  Yasuhiro Yamauchi

IPC: H01M2/12 ,  H01M2/02 ,  H01M2/04 ,  H01M2/36 ,  B21K23/00

CPC classification number: H01M2/1223 ,  B21K23/00 ,  H01M2/024 ,  H01M2/043 ,  H01M2/12 ,  H01M2/362 ,  H01M2220/20

Abstract: A sealing plate for a prismatic secondary battery includes a pair of mouths for attaching a negative and positive electrode terminals, one mouth being formed near one end in a longitudinal direction of the sealing plate, and the other mouth being formed near the other end, coining areas used for positioning of an insulating member and formed around the pair of mouths on a front face of the sealing plate, a gas release valve and an electrolyte pour hole formed between the pair of mouths, and grooves formed between the respective coining areas and the long side edge of the sealing plate. The groove has a smaller depth near the gas release valve than the depth near the coining area. Even when the sealing plate is produced through forging, the front face has good flatness and the coining areas are unlikely to have a sink mark or a shear drop.

公开(公告)号：US20160172712A1

公开(公告)日：2016-06-16

申请号：US14900536

申请日：2014-06-10

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Eiji Okutani

IPC: H01M10/0587 ,  H01M2/34

CPC classification number: H01M10/0587 ,  H01M2/14 ,  H01M2/34 ,  H01M2/345 ,  H01M4/139 ,  H01M4/62 ,  H01M2200/20 ,  H01M2220/20

Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present invention includes a pressure-sensitive current interrupt mechanism. An insulating tape is bonded onto a positive electrode mixture layer in at least one of a winding start-side edge portion and a winding end-side edge portion of a positive electrode plate in a flat wound electrode body at a position opposing to a separator, the insulating tape extending in a widthwise direction of the positive electrode mixture layer.

Abstract translation: 根据本发明的一个实施例的非水电解质二次电池包括压敏电流中断机构。 绝缘带在与隔膜相对的位置处的平坦卷绕电极体中的正极板的卷绕起始侧边缘部分和卷绕端部侧边缘部分的至少一个中的正极合剂层上接合， 绝缘带在正极混合层的宽度方向上延伸。

公开(公告)号：US20160155998A1

公开(公告)日：2016-06-02

申请号：US14944846

申请日：2015-11-18

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Eiji Okutani ,  Shinichiro Yoshida

IPC: H01M2/04 ,  H01M10/04 ,  H01M2/08 ,  H01M4/66

CPC classification number: H01M2/0217 ,  H01M2/0237 ,  H01M2/043 ,  H01M2/22 ,  H01M2/263 ,  H01M2/30 ,  H01M4/661 ,  H01M10/0431 ,  H01M2220/20

Abstract: The thickness of a terminal connection portion of a positive electrode current collector is greater than that of a terminal connection portion of a negative electrode current collector. The terminal connection portion of the positive electrode current collector has a through-hole, and a positive electrode terminal is inserted into the through-hole and is upset on the terminal connection portion. The terminal connection portion of the negative electrode current collector has a through-hole, and a negative electrode terminal is inserted into the through-hole and is upset on the terminal connection portion. A recessed portion is formed in a lower surface of the positive electrode terminal connection portion around the through-hole, and a lower end portion of the positive electrode terminal is disposed in the recessed portion.

Abstract translation: 正极集电体的端子连接部的厚度大于负极集电体的端子连接部的厚度。 正极集电体的端子连接部具有通孔，正极端子插入通孔，并在端子连接部上产生镦锻。 负极集电体的端子连接部具有通孔，负极端子插入贯通孔，并在端子连接部上产生镦锻。 在正极端子连接部的贯通孔的下表面形成有凹部，正极端子的下端部设置在凹部内。

公开(公告)号：US09059460B2

公开(公告)日：2015-06-16

申请号：US14610643

申请日：2015-01-30

Applicant: SANYO Electric Co., Ltd.

Inventor： Takayuki Hattori ,  Eiji Okutani ,  Yoshinori Yokoyama ,  Yasuhiro Yamauchi

IPC: H01M2/36 ,  H01M2/04 ,  H01M2/12 ,  H01M2/02 ,  H01M10/04

CPC classification number: H01M2/362 ,  H01M2/0217 ,  H01M2/0237 ,  H01M2/024 ,  H01M2/0426 ,  H01M2/043 ,  H01M2/0439 ,  H01M2/12 ,  H01M2/1223 ,  H01M2/361 ,  H01M10/0431 ,  H01M2200/20

Abstract: A prismatic secondary battery 10 includes a prismatic hollow outer body having a mouth and a bottom and storing an electrode assembly, a positive electrode collector, a negative electrode collector, and an electrolyte, a sealing plate 20 sealing up the mouth of the prismatic hollow outer body, and a positive electrode terminal 15 and a negative electrode terminal 17 attached to the sealing plate 20; the sealing plate 20 includes a gas release valve 25 at the center between the positive electrode terminal 15 and the negative electrode terminal 17 and includes an electrolyte pour hole 23 on one side of the gas release valve 25 and, on the other side on the front face, a concaved flat face with a height lower than that of the peripheral portion; and the concaved flat face is formed with an identification code 33.

Abstract translation: 棱柱形二次电池10包括具有口部和底部并且存储电极组件，正极集电体，负极集电体和电解质的棱柱形中空外体，密封板20，其密封棱柱形中空外部 主体和安装在密封板20上的正极端子15和负极端子17; 密封板20包括在正极端子15和负极端子17之间的中心处的气体释放阀25，并且在气体释放阀25的一侧包括电解液浇注孔23，在前侧的另一侧 表面，具有比周边部分的高度低的凹陷平面; 并且凹形平面形成有识别码33。

公开(公告)号：US08980469B2

公开(公告)日：2015-03-17

申请号：US13750616

申请日：2013-01-25

Applicant: SANYO Electric Co., Ltd. ,  Toyota Jidosha Kabushiki Kaisha

Inventor： Eiji Okutani ,  Yoshinori Yokoyama ,  Yasuhiro Yamauchi ,  Toshiyuki Nohma ,  Hironori Harada ,  Toshihiro Takada ,  Hiroshi Inukai ,  Akira Kiyama ,  Ryuta Morishima

IPC: H01M2/00 ,  H01M2/02 ,  H01M2/08 ,  H01M2/12 ,  H01M2/34

CPC classification number: H01M2/0217 ,  H01M2/34

Abstract: A high-reliability prismatic secondary battery with a current interruption mechanism that is unlikely to be damaged even if the battery is subjected to shock is provided. The prismatic secondary battery includes a second insulating member having a first through-hole, the second insulating member being arranged between a first region of a positive electrode collector and an inversion plate. The first region of the positive electrode collector and the inversion plate are electrically connected to each other through the first through-hole. The second insulating member has a plurality of fixing pawl portions. The fixing pawl portions are hooked and fixed to a fixing portion formed on the outer surface side of the conductive member.

Abstract translation: 提供具有电流中断机构的高可靠性棱柱二次电池，即使电池受到冲击也不会损坏。 棱柱二次电池包括具有第一通孔的第二绝缘构件，第二绝缘构件设置在正极集电体的第一区域和反转板之间。 正极集电体和反转板的第一区域通过第一贯通孔电连接。 第二绝缘构件具有多个固定爪部。 固定棘爪部钩挂并固定在形成在导电构件的外表面侧上的固定部分上。

公开(公告)号：US20160380300A1

公开(公告)日：2016-12-29

申请号：US15194966

申请日：2016-06-28

Applicant: SANYO Electric Co., Ltd.

Inventor： Eiji Okutani ,  Shinichirou Yoshida ,  Takuya Yamawaki

IPC: H01M10/04 ,  H01M4/04 ,  H01M2/02

CPC classification number: H01M10/0431 ,  H01M2/263 ,  H01M10/052 ,  H01M10/058

Abstract: A wound electrode body includes a negative electrode core body exposed portion on one of the end portions of the wound electrode body in a winding axis direction, which is layered by being wound. A core body connection of a negative electrode collector is disposed on one of the outer surfaces of the layered negative electrode core body exposed portion, and a negative electrode collector receiving component is disposed on the other one of the outer surfaces. Furthermore, tapes are each disposed between the core body connection and the negative electrode core body exposed portion and between the negative electrode collector receiving component and the negative electrode core body exposed portion. Each tape includes a base material layer, and an adhesion layer containing a coloring agent.

Abstract translation: 卷绕电极体在卷绕电极体的卷绕轴方向的一个端部上具有负极芯体露出部，该卷绕电极体卷绕成层叠状。 在层叠的负极芯体露出部分的一个外表面上设置负极集电体的芯体连接，并且在另一个外表面上设置负极集电体接收部件。 此外，磁带分别设置在芯体连接部和负极芯体露出部之间，负极集电体容纳部件与负极芯体露出部之间。 每个胶带包括基材层和含有着色剂的粘合层。

公开(公告)号：US20150129332A1

公开(公告)日：2015-05-14

申请号：US14400554

申请日：2013-07-31

Applicant: SANYO Electric Co., Ltd

Inventor： Takashi Seto ,  Eiji Okutani ,  Kazuhiro Fujii

IPC: H01M10/04 ,  H02J7/00 ,  B60L11/18

CPC classification number: H01M10/0468 ,  B60L50/64 ,  B60L50/66 ,  B60L53/00 ,  H01M2/1077 ,  H01M2/206 ,  H01M10/0431 ,  H01M10/0481 ,  H01M10/049 ,  H01M10/647 ,  H01M10/6557 ,  H01M2220/20 ,  H02J7/0013 ,  H02J7/007 ,  Y02T10/7005 ,  Y02T10/705

Abstract: A battery pack comprises a battery staked member stacking a plurality of flat secondary batteries, end plates being disposed at both ends of the battery staked member, and binding bars being coupled to the end plates in a pressed state that the flat secondary batteries of the battery staked member are compressed and fixed in a predetermined binding pressure. The flat secondary batteries constituting the battery staked member comprise an electrode assembly of a spiral form in which a positive electrode plate and a negative electrode plate interposing a separator therebetween are wound, and an outer case airtightly storing the spiral electrode assembly and an electrolyte. The spiral electrode assemblies of the flat secondary batteries are pressed and made into a flat shape by a higher pressing pressure than the predetermined binding pressure in which the flat secondary batteries are bound by the binding bars.

Abstract translation: 电池组包括堆叠多个扁平二次电池的电池堆叠构件，设置在电池铆接构件的两端的端板和在压制状态下联接到端板的绑定杆，电池的平坦二次电池 被加压的构件被压缩并以预定的结合压力固定。 构成电池堆叠构件的扁平二次电池包括螺旋形式的电极组件，其中缠绕有正极板和在其间插入隔板的负极板，以及外壳，密封地存储螺旋电极组件和电解质。 扁平二次电池的螺旋电极组件通过比预定的结合压力更高的压力被压制并制成平坦的形状，其中扁平的二次电池被结合杆所束缚。

公开(公告)号：US08906545B2

公开(公告)日：2014-12-09

申请号：US13750639

申请日：2013-01-25

Applicant: SANYO Electric Co., Ltd. ,  Toyota Jidosha Kabushiki Kaisha

Inventor： Takayuki Hattori ,  Eiji Okutani ,  Yoshiya Maruyama ,  Yasuhiro Yamauchi ,  Hironori Harada ,  Toshihiro Takada ,  Hiroshi Inukai

IPC: H01M2/30 ,  H01M2/02 ,  H01M2/34

CPC classification number: H01M2/0217 ,  H01M2/34

Abstract: A crimped portion of a positive electrode external terminal is crimped on its upper end side to be electrically connected to a positive electrode terminal plate. This crimped portion is welded to the positive electrode terminal plate by applying high energy beams. The negative electrode side has a configuration similar to that of the positive electrode side. The contact area between the positive electrode terminal plate and the crimped portion of the positive electrode external terminal is set smaller than the corresponding contact area on the negative electrode side, and the volume of the crimped portion of the positive electrode external terminal is set larger than that of the corresponding crimped portion on the negative electrode side. Thus, a prismatic secondary battery is provided that shows strong joining strength between the external terminal and the terminal plate, suppressed internal resistance variations, and improved reliability.

Abstract translation: 正极外部端子的压接部分在其上端被压接以与正极端子板电连接。 该卷曲部分通过施加高能束而焊接到正极端子板。 负极侧具有与正极侧相似的构造。 正极端子板和正极外部端子的压接部之间的接触面积被设定为小于负极侧的对应的接触面积，正极外部端子的压接部的体积被设定为大于 在负极侧的相应的压接部分。 因此，提供了一种棱柱二次电池，其显示出外部端子和端子板之间的强耦合强度，内部电阻变化的抑制和可靠性的提高。