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    Non-aqueous electrolyte secondary battery
    1.
    发明授权
    Non-aqueous electrolyte secondary battery 有权

    公开(公告)号：US12155039B2

    公开(公告)日：2024-11-26

    申请号：US17417199

    申请日：2019-12-19

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yohei Tao ,  Mio Nosaka ,  Keisuke Minami ,  Toyoki Fujihara

    IPC: H01M10/0569 ,  H01M10/0587 ,  H01M50/186 ,  H01M50/409 ,  H01M50/417 ,  H01M50/489 ,  H01M50/531

    Abstract: Provided is a non-aqueous electrolyte secondary battery having excellent properties even at low temperatures. The non-aqueous electrolyte secondary battery comprises: an electrode assembly including a positive electrode plate and a negative electrode plate; a non-aqueous electrolyte; an exterior body having an opening, and accommodating the electrode assembly and the non-aqueous electrolyte; and a sealing plate for sealing the opening of the exterior body, wherein the negative electrode plate has a negative electrode core and a negative electrode active material layer formed on the negative electrode core, and the non-aqueous electrolyte contains a non-aqueous solvent, the non-aqueous solvent containing 50-80 vol % of a chain carbonate with respect to the non-aqueous solvent, and containing, as the chain carbonate, 30-40 vol % of dimethyl carbonate, 3-8 vol % of propylene carbonate, and 2-5 vol % of methyl propionate with respect to the non-aqueous solvent.

    Battery pack
    2.
    发明授权
    Battery pack 有权

    公开(公告)号：US10593922B2

    公开(公告)日：2020-03-17

    申请号：US15850058

    申请日：2017-12-21

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Tetsuya Okado ,  Keisuke Minami ,  Masashi Muraoka ,  Tomoharu Arai ,  Toyoki Fujihara

    IPC: H01M2/14 ,  H01M10/0587 ,  H01M2/10 ,  H01M2/02

    Abstract: A battery pack includes a plurality of prismatic secondary batteries with spacers each interposed therebetween. The prismatic secondary batteries each include a flat wound electrode body that is formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; a prismatic outer body that houses the wound electrode body; and a sealing plate that seals an opening of the flat wound electrode body. The wound electrode body has a wound positive electrode core-exposed portion at one end portion and a wound negative electrode core-exposed portion at the other end portion. A positive electrode current collector is joined to the positive electrode core-exposed portion to form a positive electrode-joined portion, and a negative electrode current collector is joined to the negative electrode core-exposed portion to form a negative electrode-joined portion.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    5.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    非水电解质二次电池

    公开(公告)号：US20140080010A1

    公开(公告)日：2014-03-20

    申请号：US13943153

    申请日：2013-07-16

    Applicant: Sanyo Electric Co., Ltd.

    Inventor： Shingo Tode ,  Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

    IPC: H01M10/056

    CPC classification number: H01M10/056 ,  H01M4/13 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2300/0028 ,  Y02T10/7011

    Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity and superior low temperature characteristics.The present invention is a non-aqueous electrolyte secondary battery including a positive electrode and a non-aqueous electrolyte containing a non-aqueous solvent, the non-aqueous electrolyte secondary battery characterized in that the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes a total of 0.01 to 0.10 mol/L lithium difluorophosphate and/or lithium monofluorophosphate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.

    Abstract translation: 提供高容量和优异的低温特性的非水电解质二次电池。 本发明是一种非水电解质二次电池，其包含正极和含有非水溶剂的非水电解质，其特征在于，所述非水系溶剂包含30〜70体积％的乙烯 碳酸盐在25℃和1atm下，非水电解质包括总共0.01至0.10mol / L的二氟磷酸锂和/或一氟磷酸锂，并且正极活性物质层的堆积密度为2.0至2.8g / ml。

    Battery pack
    6.
    发明授权
    Battery pack 有权

    公开(公告)号：US12266818B2

    公开(公告)日：2025-04-01

    申请号：US17634411

    申请日：2020-09-11

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yuji Ogishima ,  Keisuke Minami ,  Kazuki Takeno

    IPC: H01M50/291 ,  H01M4/13 ,  H01M4/131 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/119 ,  H01M50/209

    Abstract: Each prismatic cell is provided with a rolled electrode assembly, and the rolled electrode assembly has a flat section with a flat outer peripheral surface and two curved sections with a curved outer peripheral surface. Each spacer has a substrate and multiple ribs protruding on at least one side of the substrate, and the ribs are formed so as to face the flat section of the rolled electrode assembly and extend in a direction substantially perpendicular to the rolling axis of the rolled electrode assembly. The ribs have a length of 60 to 100 when the height of the flat section of the rolled electrode assembly is represented by 100, and the relationship 2≤B/A≤10 is satisfied where A is the width of the ribs and B is the distance between adjoining ribs.

    Non-aqueous electrolyte secondary battery and method for manufacturing same
    7.
    发明授权
    Non-aqueous electrolyte secondary battery and method for manufacturing same 有权

    公开(公告)号：US12136698B2

    公开(公告)日：2024-11-05

    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 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/409 ,  H01M50/489

    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.

    BATTERY PACK
    10.
    发明申请
    BATTERY PACK 审中-公开

    公开(公告)号：US20180269449A1

    公开(公告)日：2018-09-20

    申请号：US15850058

    申请日：2017-12-21

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Tetsuya Okado ,  Keisuke Minami ,  Masashi Muraoka ,  Tomoharu Arai ,  Toyoki Fujihara

    IPC: H01M2/14 ,  H01M2/10 ,  H01M10/0587

    CPC classification number: H01M2/14 ,  H01M2/0217 ,  H01M2/1077 ,  H01M2/1094 ,  H01M10/0587 ,  H01M2220/20

    Abstract: A battery pack includes a plurality of prismatic secondary batteries with spacers each interposed therebetween. The prismatic secondary batteries each include a flat wound electrode body that is formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; a prismatic outer body that houses the wound electrode body; and a sealing plate that seals an opening of the flat wound electrode body. The wound electrode body has a wound positive electrode core-exposed portion at one end portion and a wound negative electrode core-exposed portion at the other end portion. A positive electrode current collector is joined to the positive electrode core-exposed portion to form a positive electrode-joined portion, and a negative electrode current collector is joined to the negative electrode core-exposed portion to form a negative electrode-joined portion.

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