公开(公告)号：US10811668B2

公开(公告)日：2020-10-20

申请号：US16177727

申请日：2018-11-01

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Naoya Tada ,  Atsushi Tsuji ,  Yoshinori Yokoyama

IPC: H01M2/36 ,  H01M2/34 ,  H01M2/26 ,  H01M2/30 ,  H01M10/0525

Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.

公开(公告)号：US20190140251A1

公开(公告)日：2019-05-09

申请号：US16177727

申请日：2018-11-01

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Naoya Tada ,  Atsushi Tsuji ,  Yoshinori Yokoyama

IPC: H01M2/34 ,  H01M2/26 ,  H01M10/0525 ,  H01M2/30

Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.

公开(公告)号：US09196895B2

公开(公告)日：2015-11-24

申请号：US13749995

申请日：2013-01-25

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

Inventor： Hironori Harada ,  Hiroshi Inukai ,  Toshihiro Takada ,  Yasuhiro Yamauchi ,  Yoshinori Yokoyama

IPC: H01M2/34 ,  H01M10/052

CPC classification number: H01M2/345 ,  H01M10/052 ,  Y02T10/7011

Abstract: Provided is a sealed secondary battery having a current interrupt mechanism with a high heat resistance that prevents fusion of the current collecting plate by the Joule heat generated during high-rate charge and discharged. A current interrupt mechanism 80 of a sealed secondary battery 10 provided in accordance with the present invention is configured such that when the internal pressure inside a battery case 12 rises above the predetermined level, a current interrupt valve 30 is deformed by the internal pressure in a direction of separating from a rectangular plate-shaped current collecting plate 72 and the current collecting plate breaks in the portion of an annular groove 79 of a central thin section 74 of the current collecting plate.

Abstract translation: 提供一种具有高耐热性的电流中断机构的密封二次电池，其防止集电板在高速充电期间产生的焦耳热量的放电。 根据本发明提供的密封二次电池10的电流中断机构80被构造成使得当电池壳体12内部的内部压力升高到高于预定水平时，电流中断阀30由于内部压力而变形 与矩形板状集流板72分离的方向和集电板在集电板的中央薄部74的环状槽79的部分断裂。

公开(公告)号：US20150140370A1

公开(公告)日：2015-05-21

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 ,  H01M10/04 ,  H01M2/02 ,  H01M2/04 ,  H01M2/12

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：US20140045020A1

公开(公告)日：2014-02-13

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: H01M10/0563 ,  H01M10/04

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：US10026950B2

公开(公告)日：2018-07-17

申请号：US14969953

申请日：2015-12-15

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

Inventor： Yoshinori Yokoyama ,  Naoya Tada ,  Yasuhiro Yamauchi ,  Toshihiro Takada ,  Hiroshi Inukai ,  Yasushi Tsuchida ,  Takashi Tokunaga ,  Akira Kiyama

IPC: H01M2/34 ,  H01M10/04 ,  H01M2/30 ,  H01M2/22 ,  H01M2/26

Abstract: A prismatic secondary battery of one configuration has a current disconnection mechanism, and a distance from a first conductive member to a second conductive member along a surface of a first insulation member and passing an outer periphery of the first insulation member is greater than or equal to 2.4 mm. At least one of the first insulation member and a second insulation member is formed from a material having a weight reduction percentage of 100% in thermo gravimetric measurement under conditions of a measurement temperature of 25° C.-600° C., a temperature increase rate of 5° C.±0.5° C./min, a measurement atmosphere of inert gas flow, and an amount of measurement sample of 10 mg±5 mg.

公开(公告)号：US20170222209A1

公开(公告)日：2017-08-03

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 ,  H01M2/12 ,  H01M10/0587

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：US20150303443A1

公开(公告)日：2015-10-22

申请号：US14755278

申请日：2015-06-30

Applicant: SANYO Electric Co., Ltd.

Inventor： Yoshinori Yokoyama ,  Yasuhiro Yamauchi ,  Toshiyuki Nohma

IPC: H01M2/34 ,  H01M2/06

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

Abstract: 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 plat. 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: 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可能损坏。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平台。 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：US08980468B2

公开(公告)日：2015-03-17

申请号：US13750425

申请日：2013-01-25

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

Inventor： Yoshinori Yokoyama ,  Takayuki Hattori ,  Yasuhiro Yamauchi ,  Toshiyuki Nohma ,  Hironori Harada ,  Toshihiro Takada ,  Hiroshi Inukai

IPC: H01M2/00 ,  H01M2/02 ,  H01M2/08 ,  H01M2/12 ,  H01M2/22 ,  H01M2/26 ,  H01M2/34 ,  H01M2/06 ,  H01M10/04

CPC classification number: H01M2/1229 ,  H01M2/0217 ,  H01M2/06 ,  H01M2/22 ,  H01M2/263 ,  H01M2/345 ,  H01M10/0431

Abstract: A current interruption mechanism for prismatic secondary battery includes a tubular conductive member electrically connected to a positive electrode external terminal, an inversion plate, and a positive electrode collector connected to the inversion plate. The positive electrode collector has a first region that is parallel to a sealing body and a second region that is connected to a positive electrode plate. The boundaries between the first and second regions are disposed further outward than the inner surface of the tubular conductive member, and at least one of the edge portions, other than the boundaries between the first region and second region, is located further outward than the inner surface of the tubular portion of the conductive member. The current interruption mechanism is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc.

Abstract translation: 棱柱二次电池的电流中断机构包括电连接到正极外部端子，反转板和连接到反转板的正极集电体的管状导电构件。 正极集电体具有与密封体平行的第一区域和与正极板连接的第二区域。 第一和第二区域之间的边界比管状导电构件的内表面进一步向外设置，除了第一区域和第二区域之间的边界之外，边缘部分中的至少一个位于比内部 导电构件的管状部分的表面。 即使电池由于振动，下落等而受到冲击，电流中断机构也不可能损坏。

公开(公告)号：US20140045021A1

公开(公告)日：2014-02-13

申请号：US13962217

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

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

IPC: H01M10/0563 ,  H01M10/0525 ,  H01M10/04

CPC classification number: H01M10/0563 ,  H01M2/0207 ,  H01M2/0285 ,  H01M2/1653 ,  H01M10/0431 ,  H01M10/0436 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0587

Abstract: A prismatic nonaqueous electrolyte secondary battery includes: a flat electrode assembly including a positive electrode and a negative electrode; an outer can storing the flat electrode assembly and a nonaqueous electrolyte; and a sealing plate sealing an opening portion of the outer can. The flat electrode assembly has a portion thereof other than the side facing the sealing plate, covered with an insulating sheet. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The wettability of the insulating sheet to the nonaqueous electrolyte is lower than that of the outer can to the nonaqueous electrolyte. This configuration allows a nonaqueous electrolyte having a high viscosity to easily penetrate the inside of the electrode assembly.

Abstract translation: 棱柱型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; 外部罐可容纳扁平电极组件和非水电解质; 以及密封外罐的开口部的密封板。 扁平电极组件具有除面向密封板的一侧的一部分，被绝缘片覆盖。 非水电解质含有在制造非水电解质二次电池时具有草酸盐络合物作为阴离子的锂盐和二氟磷酸锂（LiPF 2 O 2）中的至少一种。 绝缘片对非水电解液的润湿性低于非水电解质的外罐的润湿性。 这种构造使得具有高粘度的非水电解质容易地穿透电极组件的内部。