公开(公告)号：US20150318580A1

公开(公告)日：2015-11-05

申请号：US14652041

申请日：2012-12-13

Applicant: ELIIY POWER CO., LTD.

Inventor： Takao FUKUNAGA ,  Tomitaro HARA ,  Yusuke KAZUSHIMA

IPC: H01M10/42 ,  H01M10/44 ,  H01M10/058 ,  H01M4/133 ,  H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/4235 ,  H01M2/263 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/058 ,  H01M10/44 ,  H01M2300/0025 ,  H01M2300/004 ,  Y10T29/49117

Abstract: The present invention provides a non-aqueous electrolyte secondary battery that can suppress a drop in a flash point of an electrolyte solution even if the non-aqueous electrolyte secondary battery is used for a long time. The non-aqueous electrolyte secondary battery includes: an electrode body having a structure in which a positive electrode including a positive-electrode active material and a negative electrode including a negative-electrode active material are stacked with a separator interposed therebetween; a non-aqueous electrolyte solution containing a flame retardant; and an outer casing accommodating the electrode body and the non-aqueous electrolyte solution. The non-aqueous electrolyte solution in the electrode body has a flame retardant concentration lower than a flame retardant concentration in the non-aqueous electrolyte solution between the electrode body and the outer casing.

Abstract translation: 本发明提供即使非水电解质二次电池长时间使用也能够抑制电解液的闪点下降的非水电解质二次电池。 非水电解质二次电池包括：电极体，其具有将包含正极活性物质的正极和含有负极活性物质的负极的正极与隔膜间隔开的层叠体的结构; 含有阻燃剂的非水电解液; 以及容纳电极体和非水电解质溶液的外壳。 电极体中的非水电解质溶液的阻燃浓度低于电极体与外壳之间的非水电解液中的阻燃剂浓度。

公开(公告)号：US20190288275A1

公开(公告)日：2019-09-19

申请号：US16300674

申请日：2016-05-12

Applicant: ELIIY Power Co., Ltd.

Inventor： Tomitaro HARA ,  Takao FUKUNAGA ,  Yusuke KUZUSHIMA

IPC: H01M4/133 ,  H01M4/136 ,  H01M10/0525 ,  H01M10/0563

Abstract: The present invention provides a positive electrode for non-aqueous electrolyte secondary battery, having a novel overcharge protective function. The positive electrode for non-aqueous electrolyte secondary battery according to the present invention includes a positive electrode active material layer including a plurality of positive electrode active material particles, wherein the positive electrode active material layer comprises: a carbonaceous coating film formed on a surface of each of the positive electrode active material particles; and 0% by weight or more and 20% by weight or less of a conductive auxiliary agent disposed between the plurality of positive electrode active material particles, and at least one of the carbonaceous coating film and the conductive auxiliary agent is graphitizable carbon.

公开(公告)号：US20240087777A1

公开(公告)日：2024-03-14

申请号：US18263653

申请日：2021-02-01

Applicant: ELIIY POWER CO., LTD. ,  NIPPON GRAPHITE INDUSTRIES, CO., LTD.

Inventor： Nobuhiro TSUJI ,  Manabu MURATA ,  Hisashi KAWAKAMI ,  Yasuto IMAI ,  Yoshiro KOJIMA ,  Takao FUKUNAGA

IPC: H01C7/02

CPC classification number: H01C7/028 ,  H01M4/602

Abstract: A thermistor layer of the present invention is configured to be disposed in an electrical current path. The thermistor layer comprises a thermosensitive particle, a plurality of electro-conductive particles covering a surface of the thermosensitive particle, and a binder adhering the electro-conductive particles, the electro-conductive particles form an electro-conductive network, at least the surface of the thermosensitive particle is made of a thermoplastic resin, the thermoplastic resin softens at a temperature lower than a temperature at which the binder softens, and the thermistor layer is provided to become highly resistive due to softening and deformation of the thermoplastic resin.

公开(公告)号：US20210083296A1

公开(公告)日：2021-03-18

申请号：US17013347

申请日：2020-09-04

Applicant: Mazda Motor Corporation ,  Ube Industries, Ltd. ,  ELIIY Power Co., Ltd.

Inventor： Kei SHIMAMOTO ,  Takao FUKUNAGA ,  Hideyuki SUGIYAMA ,  Wataru MASUDA ,  Hiroki FUJITA ,  Munetaka HIGUCHI

IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/58 ,  H01M4/587 ,  H01M4/136 ,  H01M4/133 ,  H01M10/0587 ,  H01M4/04

Abstract: A lithium ion secondary battery includes: a positive electrode having a positive electrode active material layer on a surface of a positive electrode collector; a negative electrode having a negative electrode active material layer on a surface of a negative electrode collector; and a nonaqueous electrolyte. The positive electrode, the negative electrode, and the nonaqueous electrolyte are accommodated in a battery case. The nonaqueous electrolyte contains γ-butyrolactone as a main component of a nonaqueous solvent. A BOB ion-derived coat is formed on the surface of the positive electrode active material layer. A VC-derived coat is formed on the surface of the negative electrode active material layer.

公开(公告)号：US20150325884A1

公开(公告)日：2015-11-12

申请号：US14652068

申请日：2013-12-11

Applicant: ELIIY POWER CO., LTD.

Inventor： Takao FUKUNAGA ,  Tomitaro HARA ,  Yusuke KAZUSHIMA

IPC: H01M10/0583 ,  H01M10/0587 ,  H01M10/44

CPC classification number: H01M2/36 ,  H01M4/0447 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0583 ,  H01M10/0587 ,  H01M10/446 ,  Y10T29/49112

Abstract: A method for producing a non-aqueous electrolyte secondary battery according to the present invention is characterized in that the method comprises the steps of: placing an electrode body into an outer casing, the electrode body having a folded-separator structure or a wound structure in which a positive electrode including a positive-electrode active material and a negative electrode including a negative-electrode active material are stacked with a separator interposed therebetween; placing a non-aqueous electrolyte free of a flame retardant into the outer casing; charging the electrode body by applying a voltage between the positive electrode and the negative electrode placed in the outer casing; placing a flame retardant into the outer casing; and sealing the outer casing, wherein the step of charging is a step of charging the electrode body with the state in which the surface of the positive-electrode active material and the surface of the negative-electrode active material are in contact with the non-aqueous electrolyte substantially free of the flame retardant.

Abstract translation: 根据本发明的非水电解质二次电池的制造方法的特征在于，所述方法包括以下步骤：将电极体放置在外壳中，所述电极体具有折叠分隔结构或卷绕结构 将包含正极活性物质的正极和含有负极活性物质的负极叠层在一起的隔膜间隔开隔板; 将不含阻燃剂的非水电解质放置在外壳中; 通过在放置在外壳中的正极和负极之间施加电压来对电极体进行充电; 将阻燃剂放入外壳中; 并且密封外壳，其中充电步骤是以正极活性材料的表面和负极活性材料的表面与非极性活性材料接触的状态对电极体进行充电的步骤， 基本上不含阻燃剂的水性电解质。