公开(公告)号：US11283136B2

公开(公告)日：2022-03-22

申请号：US14863927

申请日：2015-09-24

Applicant: GS Yuasa International Ltd.

Inventor： Akihiko Miyazaki ,  Sumio Mori ,  Tomonori Kako

IPC: H01M2/16 ,  H01M50/449 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/058 ,  H01M50/403

Abstract: An energy storage device includes a positive electrode provided with a positive composite layer containing a positive active material, a negative electrode provided with a negative composite layer containing a negative active material, and a separator partitioning between the positive electrode and the negative electrode, wherein the separator includes a substrate uniaxially drawn into a sheet shape and a coating layer coating at least one of surfaces of the substrate, and the coating layer has an anisotropic structure with orientation in a direction different from a drawing direction of the substrate.

公开(公告)号：US11217782B2

公开(公告)日：2022-01-04

申请号：US16090727

申请日：2017-04-03

Applicant: GS Yuasa International Ltd.

Inventor： Shota Ito ,  Tomonori Kako ,  Kazuki Kawaguchi

IPC: H01M4/02 ,  H01M4/36 ,  H01M4/131 ,  H01G11/24 ,  H01G11/86 ,  H01M4/04 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/1397 ,  H01M4/1391

Abstract: An energy storage device includes a positive electrode having a positive active material layer containing an active material in the form of particles. The positive active material layer contains primary particles of the active material and secondary particles formed by aggregation of a plurality of primary particles. The proportion of primary particles relative to all particles of the active material in the positive active material layer is 5% or more and 40% or less. An method for producing an energy storage device includes preparing a positive electrode having a positive active material layer by forming a positive active material layer from a composite containing at least secondary particles of an active material, and assembling an energy storage device using the prepared positive electrode. In the preparation of the positive electrode, the positive active material layer is pressed to deagglomerate some of the secondary particles into primary particles, and the proportion of primary particles relative to all particles of the active material in the positive active material layer is adjusted to 5% or more and 40% or less.

公开(公告)号：US09455091B2

公开(公告)日：2016-09-27

申请号：US14497781

申请日：2014-09-26

Applicant: GS Yuasa International Ltd.

Inventor： Akihiko Miyazaki ,  Sumio Mori ,  Tomonori Kako ,  Kenta Nakai

IPC: H01G9/042 ,  H01G9/15 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01G9/042 ,  H01G9/0425 ,  H01G9/15 ,  H01M4/505 ,  H01M4/525 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: An electric storage device having a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode has a positive substrate layer, a positive composite layer containing a positive active material, and an undercoat layer located between the positive substrate layer and the positive composite layer. A density of the positive composite layer is 2.1 g/cm3 or more and 2.7 g/cm3 or less. The positive electrode has the rate of increase in sheet resistance after a solvent immersion test of 30% or less. The undercoat layer contains a binder selected from the group consisting of chitosan derivatives, cellulose derivatives and acrylic acid derivatives.

Abstract translation: 具有正极，负极，位于正极和负极之间的隔膜的非蓄电装置以及非水电解质。 该正电极具有正的衬底层，含有正极活性材料的正性复合层，以及位于正性衬底层和正性复合层之间的底涂层。 正极复合层的密度为2.1g / cm 3以上且2.7g / cm 3以下。 正极在溶剂浸渍试验后的薄层电阻增加率为30％以下。 底涂层含有选自壳聚糖衍生物，纤维素衍生物和丙烯酸衍生物的粘合剂。

公开(公告)号：US20150093620A1

公开(公告)日：2015-04-02

申请号：US14503657

申请日：2014-10-01

Applicant: GS Yuasa International Ltd.

Inventor： Akihiko MIYAZAKI ,  Sumio Mori ,  Tomonori Kako ,  Kenta Nakai

IPC: H01M10/04 ,  H01M2/02

CPC classification number: H01M10/0431 ,  H01M2/02 ,  H01M2/0202 ,  H01M2/0217 ,  H01M2/0237 ,  H01M2/0277 ,  H01M2/18

Abstract: An electric storage device includes: an electrode assembly in which electrodes are wound such that paired curved portions and a straight portion connecting the paired curved portions are formed; a case which houses the electrode assembly, the case comprising a convex part protruding toward the straight portion of the electrode assembly to support the straight portion; and a support portion which supports the curved portion toward an inside of the electrode assembly.

Abstract translation: 一种蓄电装置，其特征在于，包括：电极组合体，其中形成电极，使得成对的弯曲部分和连接所述成对弯曲部分的直线部分形成; 容纳电极组件的壳体，所述壳体包括朝向所述电极组件的直线部分突出以支撑所述直线部分的凸部; 以及支撑部分，其将弯曲部分朝向电极组件的内部支撑。

公开(公告)号：US11621417B2

公开(公告)日：2023-04-04

申请号：US16765203

申请日：2018-11-21

Applicant: GS Yuasa International Ltd.

Inventor： Sumio Mori ,  Tomonori Kako ,  Akihiko Miyazaki ,  Masashi Takano ,  Ukyo Harinaga

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

Abstract: The present embodiment provides a lithium ion secondary battery including a positive electrode containing LiaNixCoyMzO2 (0.9≤a≤1.2, 0.3≤x≤0.8, 0.2≤y+z≤0.7, where M is a metal element other than Li, Ni, and Co) as a positive active material, and a negative electrode containing non-graphitic carbon as a negative active material. In this lithium ion secondary battery, at a portion where the positive electrode and the negative electrode face each other, a basis weight (P) of the positive active material and a basis weight (N) of the negative active material satisfy a relational expression of 0.65≤P/N≤1.05.

公开(公告)号：US11515537B2

公开(公告)日：2022-11-29

申请号：US16763173

申请日：2018-11-21

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Akihiko Miyazaki ,  Masashi Takano ,  Kenta Nakai ,  Ukyo Harinaga

IPC: H01M4/00 ,  H01M4/587 ,  H01M4/133 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

Abstract: An energy storage device includes a negative electrode having a negative active material layer containing amorphous carbon as an active material, a curve attained by determining a rate of change (dQ/dV) in a potential (V) of the amorphous carbon in a discharge capacity (Q) of the amorphous carbon per unit quantity based on a result attained by measuring the potential (V) with respect to the discharge capacity (Q) and representing the rate of change (dQ/dV) with respect to the potential (V) has one or more peaks in a range in which the potential of the amorphous carbon is 0.8 V or more and 1.5 V or less, and a potential of the negative electrode at time of full charge is 0.25 V or more with respect to a lithium potential.

公开(公告)号：US09806376B2

公开(公告)日：2017-10-31

申请号：US14833558

申请日：2015-08-24

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Sumio Mori ,  Akihiko Miyazaki ,  Kenta Nakai

IPC: H01M10/0567 ,  H01M4/587 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  C01P2004/60 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2300/004

Abstract: Provided is an energy storage device including an electrolyte solution including a compound represented by the general formula (1), a compound represented by the general formula (2), and a compound represented by the general formula (3):

公开(公告)号：US09653714B2

公开(公告)日：2017-05-16

申请号：US14227394

申请日：2014-03-27

Applicant: GS Yuasa International Ltd.

Inventor： Sumio Mori ,  Tomonori Kako ,  Akihiko Miyazaki ,  Kenta Nakai

IPC: H01M2/12 ,  H01M2/02 ,  H01M2/04 ,  H01M2/10 ,  H01M2/26 ,  H01M2/30 ,  H01G9/12 ,  H01G11/18 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6557 ,  H01M10/613

CPC classification number: H01M2/12 ,  H01G9/12 ,  H01G11/18 ,  H01M2/024 ,  H01M2/0478 ,  H01M2/1077 ,  H01M2/263 ,  H01M2/305 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6557 ,  Y02E60/13

Abstract: An electric storage device is provided with an electrode assembly including a positive electrode plate and a negative electrode plate; a case for housing the electrode assembly; a positive-electrode external terminal arranged on an outer surface of the case and electrically connected to the positive electrode plate; a negative-electrode external terminal arranged on an outer surface of the case and electrically connected to the negative electrode plate; and a gas exhaust valve formed in a region of the case on the opposite side of a region where the positive-electrode external terminal and the negative-electrode external terminal are arranged.

公开(公告)号：US09484565B2

公开(公告)日：2016-11-01

申请号：US13855029

申请日：2013-04-02

Applicant: GS Yuasa International Ltd.

Inventor： Akihiko Miyazaki ,  Sumio Mori ,  Tomonori Kako

IPC: H01M2/16 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M2/1686 ,  H01M2/1646 ,  H01M2/1653 ,  H01M4/485 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

Abstract: In an energy storage device including a positive electrode plate and a negative electrode plate that are insulated from each other with a separator interposed therebetween, and a non-aqueous electrolyte, the separator includes a base material layer and a coating layer that is disposed on at least one surface of the base material layer, and the separator has an air permeability of the base material layer of 25 (sec/100 cc) or greater and 250 (sec/100 cc) or less, a porosity of the base material layer of 45% or greater, an air permeability of an interface between the base material layer and the coating layer of 15 (sec/100 cc) or less, and an air permeability of the coating layer of 15 (sec/100 cc) or less.

Abstract translation: 在包括隔着隔膜相互绝缘的正极板和负极板的能量存储装置和非水电解质中，隔板包括基材层和设置在其上的涂层 基材层的至少一个表面，隔板的基材层的透气度为25（秒/ 100cc）以上且250（秒/ 100cc）以下，基材层的孔隙率为 45％以上，基材层与涂层之间的界面的透气度为15（sec / 100cc）以下，涂层的透气度为15（sec / 100cc）以下。

公开(公告)号：US20130266866A1

公开(公告)日：2013-10-10

申请号：US13855029

申请日：2013-04-02

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Akihiko Miyazaki ,  Sumio Mori ,  Tomonori Kako

IPC: H01M2/16

CPC classification number: H01M2/1686 ,  H01M2/1646 ,  H01M2/1653 ,  H01M4/485 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

Abstract: In an energy storage device including a positive electrode plate and a negative electrode plate that are insulated from each other with a separator interposed therebetween, and a non-aqueous electrolyte, the separator includes a base material layer and a coating layer that is disposed on at least one surface of the base material layer, and the separator has an air permeability of the base material layer of 25 (sec/100 cc) or greater and 250 (sec/100 cc) or less, a porosity of the base material layer of 45% or greater, an air permeability of an interface between the base material layer and the coating layer of 15 (sec/100 cc) or less, and an air permeability of the coating layer of 15 (sec/100 cc) or less.

Abstract translation: 在包括隔着隔膜相互绝缘的正极板和负极板的能量存储装置和非水电解质中，隔板包括基材层和设置在其上的涂层 基材层的至少一个表面，隔板的基材层的透气度为25（秒/ 100cc）以上且250（秒/ 100cc）以下，基材层的孔隙率为 45％以上，基材层与涂层之间的界面的透气度为15（sec / 100cc）以下，涂层的透气度为15（sec / 100cc）以下。