公开(公告)号：US20170229711A1

公开(公告)日：2017-08-10

申请号：US15501690

申请日：2015-08-06

Applicant: GS Yuasa International Ltd.

Inventor： Yuto YAMAKAWA ,  Hidefumi HASEGAWA ,  Yohei SHIBATA ,  Shinya UEMATSU

IPC: H01M4/62 ,  H01M4/66 ,  H01M4/505 ,  H01M4/525 ,  H01G11/28 ,  H01M10/0525

CPC classification number: H01M4/623 ,  H01G11/28 ,  H01G11/70 ,  H01M4/139 ,  H01M4/505 ,  H01M4/525 ,  H01M4/624 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A purpose of the present invention is to provide a technique for still further improving safety by increasing the resistance change ratio in a high-temperature range in a nonaqueous electrolyte energy storage device, the internal resistance of which increases with an increase in internal temperature. In a positive electrode plate for nonaqueous electrolyte energy storage device, an intermediate layer containing an electrically conducting agent and a binder is provided between a positive electrode current collector and a positive composite layer, and as the binder in the intermediate layer, one having a mass average molecular weight larger than that of a binder in the positive composite layer is used. Consequently, the resistance change ratio in a high-temperature range can be increased.

公开(公告)号：US20140176074A1

公开(公告)日：2014-06-26

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: H02J7/00

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.

Abstract translation: 本发明提供一种蓄电装置，其特征在于，包括正极，负极，设置在正极和负极之间的隔板，非水电解液，其中电解质溶解在非水溶剂中，其中无机填料层位于 正极和负极以及非水电解质溶液含有二氟双（磷酸）二锂。

公开(公告)号：US20180034098A1

公开(公告)日：2018-02-01

申请号：US15550985

申请日：2016-02-16

Applicant: GS Yuasa International Ltd.

Inventor： Hidefumi HASEGAWA ,  Kie TANAKA

IPC: H01M10/058 ,  H01M4/13 ,  H01G11/52 ,  H01M2/16 ,  H01G11/74 ,  H01G11/26

CPC classification number: H01M10/058 ,  H01G11/12 ,  H01G11/26 ,  H01G11/52 ,  H01G11/70 ,  H01G11/72 ,  H01G11/74 ,  H01G11/76 ,  H01M2/16 ,  H01M2/1673 ,  H01M2/18 ,  H01M4/13 ,  H01M10/0413 ,  H01M10/0585 ,  H01M2220/20

Abstract: The energy storage device of the present invention includes: a negative electrode including a negative composite layer and a composite layer non-form ing portion on both surfaces of a negative electrode current collecting foil respectively; a positive electrode including a positive composite layer on both surfaces of a positive electrode current collecting foil respectively; and a separator including an insulation layer which faces the positive electrode and is interposed between the negative electrode and the positive electrode. The negative electrode, the separator and the positive electrode are stacked in a first direction. The negative composite layer and the composite layer non-forming portion are disposed adjacently to each other in a second direction orthogonal to the first direction on the respective surfaces of the negative electrode. The separator is configured to project in the second direction from the positive composite layer at one end of the separator in the second direction. The separator contains a first bent portion including a recessed surface on a surface thereof which faces the negative electrode at a portion projecting in the second direction from the negative composite layer. The first bent portions of the separators disposed adjacently to each other in the first direction are brought into contact with each other.

公开(公告)号：US20170214037A1

公开(公告)日：2017-07-27

申请号：US15514927

申请日：2015-09-30

Applicant: GS Yuasa International Ltd.

Inventor： Shinya UEMATSU ,  Tomoya TSUCHIKAWA ,  Hidefumi HASEGAWA

IPC: H01M4/133 ,  G01N23/20 ,  H01M10/052

Abstract: In order to improve the insulating property of a covering layer containing a filler disposed on at least a part of a surface of a negative composite layer, there is provided a negative electrode for a nonaqueous electrolyte energy storage device, including a negative electrode including a current collector, a negative composite layer containing a negative active material, and a covering layer containing a filler on at least a part of a surface of the negative composite layer, wherein in X-ray diffraction (XRD) measurement of the negative electrode, a peak intensity ratio (I(002)/I(100)) between a diffraction peak attributed to (002) plane of the negative active material and a diffraction peak attributed to (100) plane of the negative active material is 219 or more and 862 or less.