公开(公告)号：US09419304B2

公开(公告)日：2016-08-16

申请号：US13962101

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

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

IPC: H01M8/02 ,  H01M10/0563 ,  H01M10/04 ,  H01M2/22 ,  H01M2/26 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0587

CPC classification number: H01M10/0563 ,  H01M2/22 ,  H01M2/263 ,  H01M10/0431 ,  H01M10/045 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0587 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the invention includes: a flat electrode assembly including a positive electrode and a negative electrode; a bottomed prismatic hollow outer can storing the flat electrode assembly and a nonaqueous electrolyte and having an opening portion; and a sealing plate sealing the opening portion of the hollow outer can. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2). The outer surface area of a battery outer body including the hollow outer can and the sealing plate is 350 cm2 or more. With this configuration, the nonaqueous electrolyte secondary battery has excellent battery characteristics.

Abstract translation: 根据本发明实施例的非水电解质二次电池包括：包括正极和负极的扁平电极组件; 可以容纳扁平电极组件和非水电解质并具有开口部分的有底棱柱形中空外壳; 以及密封中空外罐的开口部的密封板。 非水电解质含有作为阴离子的草酸盐配合物的锂盐和二氟磷酸锂（LiPF 2 O 2）中的至少一种。 包括中空外罐和密封板的电池外壳的外表面积为350cm 2以上。 通过这种结构，非水电解质二次电池具有优异的电池特性。

公开(公告)号：US20160118632A1

公开(公告)日：2016-04-28

申请号：US14989413

申请日：2016-01-06

Applicant: SANYO Electric Co., Ltd.

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

IPC: H01M2/04 ,  H01M2/02 ,  H01M2/36 ,  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.

Abstract translation: 棱镜二次电池包括具有口和底部的棱柱形中空外体; 平板电极组件，正电极集电体，负极集电体和电解质，它们均存储在棱柱形外体中; 封闭棱柱外壳的口部的密封板; 以及以电绝缘方式附接到密封板的正极端子。 密封板包括气体释放阀和电解质浇注孔，并且在前表面上还包括具有识别码的凹面。 对于本发明的棱镜二次电池，在棱镜二次电池的组装过程中，用于组装等的夹具不太可能与识别码接触，因此识别码不太可能被磨损，并且可追溯性是 不可能丢失。

公开(公告)号：US20150349299A1

公开(公告)日：2015-12-03

申请号：US14716193

申请日：2015-05-19

Applicant: Sanyo Electric Co., Ltd.

Inventor： Masakazu Yamada ,  Eiji Okutani ,  Yasuhiro Yamauchi

IPC: H01M2/02

CPC classification number: H01M2/024 ,  H01M2/0275 ,  H01M2/0277 ,  H01M2/14 ,  H01M10/0468 ,  H01M2220/10 ,  H01M2220/20

Abstract: An insulation sheet is disposed between a rectangular housing and an electrode body. A first side wall of the insulation sheet is disposed between a large-area side surface of the rectangular housing and the electrode body. The first side wall includes a first folded portion that is folded along an edge of the first side wall near a sealing plate. The first folded portion extends from an edge of the first side wall near the sealing plate toward a bottom surface of the rectangular housing and is disposed between the large-area side surface and the electrode body in such a way that the first folded portion overlaps the first side wall.

Abstract translation: 绝缘片设置在矩形壳体和电极体之间。 绝缘片的第一侧壁设置在矩形壳体的大面积侧表面和电极体之间。 第一侧壁包括沿密封板附近的第一侧壁的边缘折叠的第一折叠部分。 第一折叠部分从靠近密封板的第一侧壁的边缘向矩形壳体的底表面延伸，并且设置在大面积侧表面和电极体之间，使得第一折叠部分与第一折叠部分重叠 第一面墙。

公开(公告)号：US09099734B2

公开(公告)日：2015-08-04

申请号：US13749826

申请日：2013-01-25

Applicant: Sanyo Electric Co., Ltd.

Inventor： Yoshinori Yokoyama ,  Yasuhiro Yamauchi ,  Toshiyuki Nohma

IPC: H01M2/12 ,  H01M2/34 ,  H01M2/22 ,  H01M2/26 ,  H01M2/02 ,  H01M2/06 ,  H01M10/04

CPC classification number: H01M2/345 ,  H01M2/0217 ,  H01M2/06 ,  H01M2/12 ,  H01M2/22 ,  H01M2/263 ,  H01M10/0431 ,  H01M2200/20

Abstract: Disclosed is a highly reliable prismatic secondary battery with a current interruption mechanism that is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc. A second insulating member that has a through-hole is disposed between an inversion plate and the first region of a positive electrode collector, and through the through-hole the first region of the positive electrode collector is electrically connected to the inversion plate. First to third projections to formed around the through-hole formed in the second insulating member fit respectively into first to third openings formed in the first region of the positive electrode collector, and the diameters of their apexes are widened, thus forming first to third fixing portions. Thereby, the second insulating member is robustly joined to the first region of the positive electrode collector.

Abstract translation: 公开了一种具有电流中断机构的高度可靠的棱柱二次电池，即使电池由于振动，坠落等而受到冲击也不会损坏。具有通孔的第二绝缘构件设置在反转 板和正极集电体的第一区域，并且通过通孔，正极集电体的第一区域电连接到反转板。 形成在第二绝缘件上形成的通孔周围的第一至第三突起分别装配在正极集电体的第一区域中形成的第一至第三开口中，并且其顶点的直径变宽，从而形成第一至第三固定 部分。 由此，第二绝缘构件坚固地接合到正极集电体的第一区域。

公开(公告)号：US20150147606A1

公开(公告)日：2015-05-28

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

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.

Abstract translation: 用于棱柱二次电池的密封板包括一对用于连接负极和正电极端子的口，一个嘴形成在密封板的纵向方向上的一端附近，另一个嘴形成在另一端附近，压印 用于定位绝缘构件并形成在密封板前表面上的一对口周围的区域，形成在一对口之间的气体释放阀和电解液浇注孔，以及形成在各个压印区域和 密封板的长边缘。 凹槽在气体释放阀附近具有比靠近压印区域的深度更小的深度。 即使当密封板通过锻造制造时，前表面具有良好的平整度，并且压印区域不太可能具有凹痕或剪切下落。

公开(公告)号：US20140045050A1

公开(公告)日：2014-02-13

申请号：US13962027

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

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

IPC: H01M10/0563

CPC classification number: H01M10/0563 ,  H01M2/0217 ,  H01M2/027 ,  H01M2/0285 ,  H01M2/06 ,  H01M2/22 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/058 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a metallic container. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium bis(oxalato)borate (LiBOB). The container houses the electrode assembly and the nonaqueous electrolyte. At least part of the container has positive electrode potential.

Abstract translation: 根据本发明实施方案的非水电解质二次电池包括电极组件，非水电解质和金属容器。 电极组件包括正极，负极和隔膜。 负极与正极相对。 隔板设置在正极和负极之间。 非水电解质含有双（草酸）硼酸锂（LiBOB）。 容器容纳电极组件和非水电解质。 容器的至少一部分具有正极电位。

公开(公告)号：US20140045015A1

公开(公告)日：2014-02-13

申请号：US13961921

申请日：2013-08-08

Applicant: Sanyo Electric Co., Ltd.

Inventor： Yoshinori Yokoyama ,  Yasuhiro Yamauchi

IPC: H01M10/0567 ,  H01M10/04

CPC classification number: H01M10/0567 ,  H01M2/263 ,  H01M4/13 ,  H01M10/0431 ,  H01M10/0587 ,  Y02E60/122

Abstract: A nonaqueous electrolyte secondary battery includes a flat winding electrode assembly including a positive electrode substrate exposed portion on one end and a negative electrode substrate exposed portion on the other end. The winding numbers of the positive and the negative electrode substrate exposed portions are each 30 or more. The positive and negative electrode substrate exposed portions each have an outermost surface welded and connected with a positive and a negative electrode collectors, respectively. A nonaqueous electrolyte used to fabricate the battery contains a lithium salt having an oxalate complex as an anion. At the welded connection portions, all of the layers of the positive electrode substrate exposed portion are melted to be welded and connected to the positive electrode collector, and all of the layers of the negative electrode substrate exposed portion are melted to be welded and connected to the negative electrode collector.

Abstract translation: 非水电解质二次电池包括：平面绕组电极组件，其在一端包括正电极基板暴露部分，另一端包括负电极基板暴露部分。 正极和负极基板暴露部分的绕组数均为30或更大。 正电极基板和负电极基板的露出部分分别具有最外表面焊接并分别与正极集电体和负极集电体连接。 用于制造电池的非水电解质包含具有草酸盐络合物作为阴离子的锂盐。 在焊接连接部分，将正极基板暴露部分的所有层熔化以熔接并连接到正极集电体，并将负极基板暴露部分的所有层熔化以焊接并连接到 负极集电体。

公开(公告)号：US20130224536A1

公开(公告)日：2013-08-29

申请号：US13770019

申请日：2013-02-19

Applicant: Sanyo Electric Co., Ltd.

Inventor： Takayuki Hattori ,  Hiroshi Hosokawa ,  Yasuhiro Yamauchi

IPC: H01M2/30

CPC classification number: H01M2/30 ,  H01M2/0217 ,  H01M2/06 ,  H01M2/26

Abstract: A groove is formed in a ring shape and a ring-shaped convexity is formed on the periphery of a through-hole of a positive electrode terminal plate. An upper end side of a crimping part of a positive electrode exterior terminal is inserted through the through-hole of the positive electrode terminal plate and crimped, and welded spots are formed by irradiation with high-energy beams between a distal end side of the crimping part and the convexity. The mechanical and electrical connection of an exterior terminal and a terminal plate to the crimping part through welding with high-energy beams makes it possible to provide a prismatic secondary battery of enhanced reliability in which cracking is less likely to occur in the welded spots, the coupling strength between the exterior terminal and the terminal plate is increased, and fluctuations in the internal resistance are curbed.

Abstract translation: 凹槽形成为环形，并且在正极端子板的通孔的周边上形成环形凸部。 正极外部端子的压接部的上端侧穿过正极端子板的通孔而被压接，并且通过在压接的前端侧之间用高能量的光束照射来形成焊点 部分和凸度。 外部端子和端子板通过高能梁焊接到压接部分的机械和电气连接使得可以提供一种增强的可靠性的棱柱二次电池，其中在焊接点处不太可能发生开裂， 外部端子和端子板之间的耦合强度增加，内阻的波动被抑制。

公开(公告)号：US20130196221A1

公开(公告)日：2013-08-01

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: H01M2/02

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。

公开(公告)号：US20130196189A1

公开(公告)日：2013-08-01

申请号：US13750443

申请日：2013-01-25

Applicant: SANYO Electric Co., Ltd. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke Minami ,  Masahiro Iyori ,  Yoshinori Yokoyama ,  Toyoki Fujihara ,  Yasuhiro Yamauchi ,  Toshiyuki Nohma ,  Hironori Harada ,  Toshihiro Takada ,  Ryuta Morishima

IPC: H01M10/42 ,  H01M10/04

CPC classification number: H01M10/4235 ,  H01M2/345 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0567 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49108

Abstract: A nonaqueous electrolyte secondary battery includes a current interruption mechanism in at least one of a conductive pathway from the positive electrode sheet to the outside of the outer body and a conductive pathway from the negative electrode sheet to the outside of the outer body. The current interruption mechanism interrupts electric current when the pressure in the outer body exceeds a predetermined value. The nonaqueous electrolyte contains an overcharge inhibitor. The overcharge inhibitor is contained in an amount of 3.0% or more and 4.5% or less with respect to the spatial volume in the outer body in terms of volume ratio. The nonaqueous electrolyte secondary battery has excellent output characteristics in a low temperature condition and can sufficiently ensure reliability even when the battery is overcharged through two-step charging in a low temperature condition.

Abstract translation: 非水电解质二次电池包括从正电极片到外体的外部的导电路径中的至少一个以及从负电极片到外体的外部的导电路径中的电流中断机构。 当外部体内的压力超过预定值时，电流中断机构中断电流。 非水电解质含有过充电抑制剂。 过充电抑制剂相对于体外的体积的空间体积的体积比为3.0％以上4.5％以下。 非水电解质二次电池在低温条件下具有优异的输出特性，并且即使当在低温条件下通过两步充电来对电池进行过充电时也可充分确保可靠性。