公开(公告)号：US11374263B2

公开(公告)日：2022-06-28

申请号：US16582356

申请日：2019-09-25

Applicant: SANYO Electric Co., Ltd.

Inventor： Junichi Yogo ,  Masashi Muraoka ,  Keisuke Minami

IPC: H01M10/0587 ,  H01M4/13 ,  H01M4/36 ,  H01M10/0525 ,  H01M50/463

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a negative electrode mixture layer which contains a first region located in a flat part of an electrode body and second regions located in a pair of curved parts of the electrode body, the ratio (B/A) of the packing density (B) in each of the second regions to the packing density (A) in the first region being 0.75 or more and 0.95 or less. Further, in a section passing through the center in the axial direction of the electrode body and being perpendicular to the axial direction, the ratio (SB/SA) of the sectional area (SB) of the pair of curved parts to the sectional area (SA) of the flat part is 0.28 or more and 0.32 or less.

公开(公告)号：US10985400B2

公开(公告)日：2021-04-20

申请号：US16293736

申请日：2019-03-06

Applicant: SANYO Electric Co., Ltd.

Inventor： Keisuke Minami ,  Yukari Kuratomi ,  Masao Inoue ,  Toyoki Fujihara ,  Naoya Nakanishi

IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0563 ,  H01M10/0587 ,  H01M2/34 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/583 ,  H01M4/485 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0567 ,  H01M4/02

Abstract: A method for manufacturing a nonaqueous electrolyte secondary battery which includes an electrode assembly, a housing with an opening and contains the electrode assembly, and a sealing member sealing the opening, the electrode assembly comprising a positive electrode and a negative electrode. The positive electrode includes a positive electrode active material, lithium carbonate, and lithium phosphate, the negative electrode comprising a negative electrode active material. The method includes placing the electrode assembly in the housing, and placing a nonaqueous electrolyte containing lithium fluorosulfonate in the housing.

公开(公告)号：US20190288290A1

公开(公告)日：2019-09-19

申请号：US16254974

申请日：2019-01-23

Applicant: SANYO Electric Co., Ltd.

Inventor： Keisuke Minami ,  Kazuki Takeno ,  Toyoki Fujihara ,  Takuya Tamagawa

IPC: H01M4/62 ,  H01M4/36 ,  H01M10/0525

Abstract: A non-aqueous electrolyte secondary battery of one example according to an embodiment has an output of 1,000 W or more. An electrode body includes a protective layer which contains an insulating inorganic compound and which is provided on at least one surface of a positive electrode, a negative electrode, and a separator, and has a heat capacity per unit battery capacity of 16 J/K·Ah or more. The positive electrode has a surface resistance of 0.5 to 40Ω.

公开(公告)号：US09406924B2

公开(公告)日：2016-08-02

申请号：US14146938

申请日：2014-01-03

Applicant: SANYO Electric Co., Ltd.

Inventor： Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M10/0567 ,  H01M2/34 ,  H01M10/42 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M2/345 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/4235 ,  H01M2004/021 ,  Y02E60/122

Abstract: A nonaqueous electrolyte secondary battery includes: an electrode assembly including positive and negative electrode plates; a nonaqueous electrolyte; an outer body; and a current interruption mechanism being provided on at least one of a conductive pathway between the positive electrode plate and a positive electrode external terminal and a conductive pathway between the negative electrode plate and a negative electrode external terminal. The nonaqueous electrolyte contains an overcharge inhibitor. The positive electrode active material layer has a specific surface area of 1.3 m2/g or less. The positive electrode active material layer has a total surface area of 41 m2/g or less with respect to the total mass of the overcharge inhibitor in the nonaqueous electrolyte. Thus the battery can increase a battery internal pressure inside the outer body in a short period of time to activate the current interruption mechanism to interrupt the conductive pathway if the battery is overcharged.

Abstract translation: 非水电解质二次电池包括：包括正极板和负极板的电极组件; 非水电解质; 外身; 并且在正电极板和正电极外部端子之间的导电路径和负极板和负极外部端子之间的导电路径中的至少一个上提供电流中断机构。 非水电解质含有过充电抑制剂。 正极活性物质层的比表面积为1.3m 2 / g以下。 相对于非水电解质中的过充电抑制剂的总质量，正极活性物质层的总表面积为41m 2 / g以下。 因此，如果电池过充电，电池可以在短时间内增加外部体内的电池内部压力，以激活电流中断机制来中断导电路径。

公开(公告)号：US20140045049A1

公开(公告)日：2014-02-13

申请号：US13961966

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Masahiro Iyori ,  Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M10/0567 ,  H01M2/30

CPC classification number: H01M10/0567 ,  H01M2/021 ,  H01M2/0212 ,  H01M2/0287 ,  H01M2/26 ,  H01M2/30 ,  H01M4/661 ,  H01M10/0459 ,  H01M10/052 ,  H01M10/0583 ,  Y02T10/7011

Abstract: A stacked electrode assembly is arranged inside an aluminum laminated outer body. At least one of a positive electrode terminal and a negative electrode terminal satisfies Formula (1) below. A nonaqueous electrolyte contains LiBOB and/or a boron-containing substance derived from LiBOB. The battery has a capacity of 10 Ah or larger. The sectional area of the terminal (mm2)/a current value of 1.0 It (A)≦0.3 (mm2/A)   (1)

Abstract translation: 堆叠的电极组件布置在铝层压外壳的内部。 正极端子和负极端子中的至少一个满足下式（1）。 非水电解质含有LiBOB和/或衍生自LiBOB的含硼物质。 电池容量为10 Ah或更大。 端子截面积（mm2）/ a当前值1.0 It（A）@ 0.3（mm2 / A）（1）

公开(公告)号：US20140041209A1

公开(公告)日：2014-02-13

申请号：US13962070

申请日：2013-08-08

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M10/058

CPC classification number: H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/446 ,  Y02E60/122 ,  Y10T29/49108

Abstract: Provided is a method of manufacturing a nonaqueous electrolyte secondary battery. The method includes: forming an electrode assembly including a positive electrode plate and a negative electrode plate disposed with a separator interposed therebetween; arranging the electrode assembly and a nonaqueous electrolyte containing LiBOB (lithium bis(oxalato)borate) and LiPF2O2 (lithium difluorophosphate) inside an outer body; and configuring the concentration of the LiBOB to be larger than that of the LiPF2O2 and to be smaller than that of the LiPF2O2 by charge and discharge.

Abstract translation: 提供一种制造非水电解质二次电池的方法。 该方法包括：形成电极组件，该电极组件包括：正极板和设置有间隔件的负极板; 将电极组件和含有LiBOB（双（草酸）硼酸锂）和LiPF 2 O 2（二氟磷酸锂）的非水电解质放置在外体内; 并且将LiBOB的浓度配置为大于LiPF 2 O 2的浓度，并且通过充放电比LiPF 2 O的浓度小。

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。

公开(公告)号：US20220115698A1

公开(公告)日：2022-04-14

申请号：US17417495

申请日：2019-12-19

Applicant: SANYO Electric Co., Ltd.

Inventor： Yohei Tao ,  Ken Kaneko ,  Keisuke Minami ,  Toyoki Fujihara

IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0587 ,  H01M10/0525

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode core; a positive electrode plate having a positive electrode active material layer formed on the positive electrode core; a negative electrode plate; a flat wound electrode assembly in which the positive electrode plate and the negative electrode plate are wound with a separator therebetween; and a non-aqueous electrolyte, wherein the positive electrode active material is a manganese-containing lithium transition metal composite oxide, the BET specific surface area of the positive electrode active material is 2.0-3.0 m2/g, the total surface area of the positive electrode active material contained in the positive electrode active material layer is 70-90 m2, and the value of A/B is 0.03-0.09 (μmol/m2), where A (μmol) is the total amount of FSO3 contained in the non-aqueous electrolyte, and B (m2) is the total area of the positive electrode active material contained in the positive electrode active material layer.

公开(公告)号：US20220077503A1

公开(公告)日：2022-03-10

申请号：US17417162

申请日：2019-12-19

Applicant: SANYO Electric Co., Ltd.

Inventor： Yohei Tao ,  Masao Inoue ,  Keisuke Minami ,  Toyoki Fujihara

IPC: H01M10/0587 ,  H01M50/417 ,  H01M50/46 ,  H01M10/0568

Abstract: A non-aqueous electrolyte secondary battery comprises: a positive electrode core; a positive electrode plate having a positive electrode active material layer which is formed on the positive electrode core and contains a positive electrode active material; a negative electrode core; a negative electrode plate having a negative electrode active material layer which is formed on the negative electrode core and contains a negative electrode active material; a separator disposed between the positive and negative electrode plates; and a non-aqueous electrolytic solution, wherein the non-aqueous electrolytic solution contains lithium bis(oxalate) borate, and the value of A/B is 2-11, where A (μmol) is the total amount of lithium bis(oxalate) borate contained in the non-aqueous electrolytic solution, and B(m2) is the total area of the negative electrode active material contained in the region of the negative electrode active material layer facing the positive electrode active material layer with the separator therebetween.

公开(公告)号：US10276890B2

公开(公告)日：2019-04-30

申请号：US15189495

申请日：2016-06-22

Applicant: SANYO Electric Co., Ltd.

Inventor： Keisuke Minami ,  Yukari Kuratomi ,  Masao Inoue ,  Toyoki Fujihara ,  Naoya Nakanishi

IPC: H01M10/0525 ,  H01M10/0587 ,  H01M2/34 ,  H01M10/04 ,  H01M4/485 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0567 ,  H01M4/02

Abstract: A nonaqueous electrolyte secondary battery includes a prismatic housing having an opening and a sealing member sealing the opening. The prismatic housing contains a flat-wound electrode assembly and a nonaqueous electrolyte. The flat-wound electrode assembly includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode substrate and a positive electrode active material mixture layer formed on the positive electrode substrate. The positive electrode active material mixture layer contains lithium carbonate and lithium phosphate. The nonaqueous electrolyte contains lithium fluorosulfonate.