公开(公告)号：US12166206B2

公开(公告)日：2024-12-10

申请号：US17258354

申请日：2019-07-18

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Masashi Takano ,  Kenta Uehira

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/583 ,  H01M10/0569 ,  H01M10/44 ,  H01M10/48 ,  H01M50/569

Abstract: An aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode having a positive composite layer including a positive active material; a negative electrode having a negative composite layer including a negative active material; and a nonaqueous electrolyte including a nonaqueous solvent, in which the positive active material includes a lithium-transition metal composite oxide that contains nickel as a transition metal and has a layered α-NaFeO2-type crystal structure, a ratio (N/P) between mass (N) per unit area of the negative active material and mass (P) per unit area of the positive active material is 0.30 or more and 0.45 or less, the nonaqueous solvent contains PC, DEC, and EMC, a content of the PC in the nonaqueous solvent is 25% by volume or more and 55% by volume or less, a total content of the DEC and the EMC in the nonaqueous solvent is 45% by volume or more and 75% by volume or less, and a content of the DEC is equal to or higher than the content of the EMC.

公开(公告)号：US12155060B2

公开(公告)日：2024-11-26

申请号：US17257877

申请日：2019-07-18

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Kazuki Kawaguchi ,  Shota Ito ,  Jun Oyama ,  Taisei Sekiguchi

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

Abstract: One aspect of the present invention is an energy storage device including a positive electrode containing: first positive active material particles containing a metal element capable of forming a conductive metal oxide; and second positive active material particles not containing the metal element, in which the first positive active material particles include a nickel-cobalt-manganese-containing lithium-transition metal composite oxide containing lithium, nickel, cobalt, and manganese as constituent elements, and the first positive active material particles are larger in median diameter than the second positive active material particles.

公开(公告)号：US09991563B2

公开(公告)日：2018-06-05

申请号：US15165565

申请日：2016-05-26

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Taro Yamafuku ,  Akihiko Miyazaki

IPC: H01M10/0587 ,  H01G11/24 ,  H01G11/32 ,  H01G11/38 ,  H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/647 ,  H01M4/02

CPC classification number: H01M10/0587 ,  H01G11/24 ,  H01G11/32 ,  H01G11/38 ,  H01M4/133 ,  H01M4/364 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/647 ,  H01M2004/027 ,  Y02E60/13

Abstract: An energy storage device includes a positive electrode and a negative electrode. The negative electrode includes graphite and non-graphitizable carbon, and a D50 particle size of the graphite at which a cumulative volume in a particle size distribution of a particle size reaches 50% is 2 μm or more. A ratio of a mass of the non-graphitizable carbon to a total amount of a mass of the graphite and a mass of the non-graphitizable carbon is 5% by mass or more and 45% by mass or less and a ratio of the D50 particle size of the graphite to a D50 particle size of the non-graphitizable carbon is 1.02 or less.

公开(公告)号：US09865855B2

公开(公告)日：2018-01-09

申请号：US15052330

申请日：2016-02-24

Applicant: GS Yuasa International Ltd.

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

IPC: H01M2/16 ,  H01M4/36 ,  H01M4/583 ,  H01M4/62 ,  H01G11/42 ,  H01G11/52 ,  H01G11/26 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M2/1673 ,  H01G11/26 ,  H01G11/42 ,  H01G11/52 ,  H01M2/166 ,  H01M2/1686 ,  H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M4/62 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/021

Abstract: An energy storage device includes a positive electrode, a negative electrode, and an insulating layer arranged between these electrodes to electrically insulate these electrodes. The negative electrode includes a composite layer containing active material particles. The composite layer of the negative electrode, and the positive electrode are arranged to face each other across the insulating layer. The insulating layer contains electrically insulating particles, and is made porous by a gap between these particles. The composite layer of the negative electrode is made porous by a gap between the active material particles, and “−0.8≦Log B−Log A≦1.0” is satisfied in which in a pore distribution of the composite layer, a pore peak diameter is represented by A (μm), and in a pore distribution of the insulating layer, a peak diameter is represented by B (μm).

公开(公告)号：US09705119B2

公开(公告)日：2017-07-11

申请号：US14719886

申请日：2015-05-22

Applicant: GS Yuasa International Ltd.

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

IPC: H02J7/00 ,  H01M2/16 ,  H01M4/583 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/44 ,  H01M4/02 ,  H01M2/20 ,  H01M10/42

CPC classification number: H01M2/1673 ,  H01M2/166 ,  H01M2/1686 ,  H01M2/206 ,  H01M4/133 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/44 ,  H01M2004/027 ,  H01M2010/4292 ,  H02J7/007 ,  Y02E60/122 ,  Y02T10/7011

Abstract: An energy storage device comprises a positive electrode, a negative electrode, a separator arranged between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative electrode has a negative substrate layer, and a negative composite layer arranged on the surface of the negative substrate layer. The separator has a separator substrate layer. The negative composite layer contains a non-graphitizable carbon having a particle diameter D50 of 2.0 μm or more and 6.0 μm or less. A corrected negative electrode density, which is defined as a value obtained by dividing, by a thickness of the separator substrate layer, a value obtained by multiplying a density of the negative composite layer by a thickness of the negative composite layer, is 1.2 (g/cm3) or more and 5.1 (g/cm3) or less.

公开(公告)号：US09509148B2

公开(公告)日：2016-11-29

申请号：US14060670

申请日：2013-10-23

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Hidefumi Hasegawa ,  Katsushi Nishie ,  Sumio Mori

IPC: H01M4/13 ,  H01M4/36 ,  H01M4/62 ,  H01M2/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42 ,  H02J7/00 ,  H01G11/60

CPC classification number: H02J7/00 ,  H01G11/60 ,  H01M2/1646 ,  H01M2/166 ,  H01M2/1686 ,  H01M4/13 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/4235 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7011 ,  Y02T10/7022 ,  Y10T29/49115

Abstract: Provided is an electric storage device including a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, a nonaqueous electrolyte solution in which an electrolyte is dissolved in a nonaqueous solvent, wherein an inorganic filler layer is disposed between the positive electrode and the negative electrode and the nonaqueous electrolyte solution contains lithium difluorobis(oxalato)phosphate.

公开(公告)号：US20130244072A1

公开(公告)日：2013-09-19

申请号：US13793640

申请日：2013-03-11

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Akihiko MIYAZAKI ,  Sumio Mori ,  Tomonori Kako

IPC: H01M10/0587 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M10/0587 ,  H01G11/52 ,  H01M2/1686 ,  H01M2/263 ,  H01M6/10 ,  H01M10/0409 ,  H01M10/0431 ,  H01M10/049 ,  H01M10/0525 ,  H01M10/125 ,  H01M10/286 ,  H01M2006/106 ,  Y02E60/13 ,  Y10T29/49108 ,  Y10T29/49114 ,  Y10T29/52

Abstract: An energy storage device includes: a core; and a wound body including, layered and wound around the core: a positive electrode, a negative electrode, and two separators, one of which is interposed between the positive electrode and the negative electrode and each having a first surface and a second surface. The first surface has thermal bonding properties superior to thermal bonding properties of the second surface, and at least one of the two separators is bonded to the core via the first surface thereof.

Abstract translation: 一种储能装置，包括：芯; 卷绕体，包括层叠并卷绕在芯上的正极，负极和两个隔板，其中一个隔着间隔设置在正极和负极之间，每个具有第一表面和第二表面。 第一表面具有优于第二表面的热粘合性能的热粘合性质，并且两个隔板中的至少一个通过其第一表面结合到芯。

公开(公告)号：US10116005B2

公开(公告)日：2018-10-30

申请号：US13793640

申请日：2013-03-11

Applicant: GS Yuasa International Ltd.

Inventor： Akihiko Miyazaki ,  Sumio Mori ,  Tomonori Kako

IPC: H01M10/0587 ,  H01M10/04 ,  H01M10/0525 ,  H01M2/16 ,  H01G11/52 ,  H01M6/10 ,  H01M10/12 ,  H01M2/26 ,  H01M10/28

Abstract: An energy storage device includes: a core; and a wound body including, layered and wound around the core: a positive electrode, a negative electrode, and two separators, one of which is interposed between the positive electrode and the negative electrode and each having a first surface and a second surface. The first surface has thermal bonding properties superior to thermal bonding properties of the second surface, and at least one of the two separators is bonded to the core via the first surface thereof.

公开(公告)号：US09905822B2

公开(公告)日：2018-02-27

申请号：US14094202

申请日：2013-12-02

Applicant: GS Yuasa International Ltd.

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

IPC: H01M2/10 ,  H01M2/20 ,  H01M2/30

CPC classification number: H01M2/1077 ,  H01M2/1094 ,  H01M2/206 ,  H01M2/305 ,  H01M2220/20

Abstract: An energy storage unit having plural energy storage devices, each of which includes a container housing an electrode assembly and positive and negative electrode terminals electrically connected to the electrode assembly and extending from the container in the same direction, includes: a bus bar electrically connecting a first terminal, which is one of the positive electrode terminal and the negative electrode terminal of a first energy storage device included in the plural energy storage devices, and a second terminal, which is one of the positive electrode terminal and the negative electrode terminal of a second energy storage device included in the plural energy storage devices and opposite in polarity to the first terminal; a packing member interposed between the first terminal and the container of the first energy storage device; and an insulating member interposed between the bus bar and the container of the first energy storage device.

公开(公告)号：US09397364B2

公开(公告)日：2016-07-19

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 ,  H01M2/18

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。