公开(公告)号：US20160141597A1

公开(公告)日：2016-05-19

申请号：US14943306

申请日：2015-11-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Naoto ONODERA ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Tatsuya HASHIMOTO ,  Yuji YOKOYAMA

IPC: H01M4/04

CPC classification number: H01M4/0435 ,  B29C43/24 ,  B32B37/06 ,  B32B2037/243 ,  B32B2457/10 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/139 ,  H01M4/661 ,  H01M2004/027

Abstract: A method of manufacturing a negative electrode for a nonaqueous electrolyte secondary battery includes: preparing a copper foil having a first main surface and a second main surface that are opposite sides of the copper foil; obtaining a granulated body by mixing a negative electrode active material, a thickener, a binder, and a solvent with each other to obtain a mixture and by granulating the mixture; obtaining a first negative electrode mixture layer by pressing the granulated body; arranging the first negative electrode mixture layer on the first main surface; and softening the copper foil by bringing the second main surface into contact with a heated roller in a state where the first negative electrode mixture layer is arranged on the first main surface. A temperature of the heated roller is a recrystallization temperature of the copper foil or higher.

Abstract translation: 一种制造非水电解质二次电池用负极的方法包括：制备具有与铜箔相对的两侧的第一主表面和第二主表面的铜箔; 通过将负极活性物质，增稠剂，粘合剂和溶剂混合来获得粒状体以获得混合物并通过制粒混合物; 通过压制造粒体获得第一负极混合物层; 将第一负极混合物层布置在第一主表面上; 并且在第一负极混合物层配置在第一主面上的状态下使第二主面与加热辊接触来软化铜箔。 加热辊的温度为铜箔的再结晶温度以上。

公开(公告)号：US20190123320A1

公开(公告)日：2019-04-25

申请号：US16152703

申请日：2018-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhisa TAKEDA ,  Yuji YOKOYAMA

IPC: H01M2/16 ,  H01M10/0525

Abstract: The separator is used in a battery. The separator includes a porous film and a columnar filler. The porous film is made of resin. The columnar filler is made of insulating ceramic. The columnar filler is filled in the porous film. The axial direction of the columnar filler is in line with the thickness direction of the porous film.

公开(公告)号：US20190115592A1

公开(公告)日：2019-04-18

申请号：US16101652

申请日：2018-08-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhisa TAKEDA ,  Yuji YOKOYAMA

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/134 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/62 ,  H01M4/66 ,  H01M2/30 ,  H01M2/08

Abstract: A negative electrode for a non-aqueous electrolyte secondary battery of the present disclosure includes a negative electrode current collector, a negative electrode composite material layer formed on the surface of the negative electrode current collector. The negative electrode composite material layer includes a negative electrode active material containing silicon oxide and heat expandable microcapsules. The ratio of silicon oxide to the total amount of the negative electrode active material is 30 mass % or less. The blending ratio of the heat expandable microcapsules to the total amount of the negative electrode active material is 0.5 mass % or more. The ratio of the heat expandable microcapsules in contact with silicon oxide to the amount of the heat expandable microcapsules contained in the negative electrode composite material layer is 70 mass % or more.

公开(公告)号：US20180076450A1

公开(公告)日：2018-03-15

申请号：US15676416

申请日：2017-08-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Tatsuya HASHIMOTO ,  Keiichi TAKAHASHI ,  Akihiro TANIGUCHI ,  Shuji TSUTSUMI ,  Yusuke FUKUMOTO ,  Yuji YOKOYAMA

IPC: H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/131

CPC classification number: H01M4/364 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A method of manufacturing a non-aqueous electrolyte solution secondary battery includes: (A) preparing a first composite material by mixing a first positive electrode active material, a first conductive material and a first binder; (B) preparing a second composite material by mixing a second positive electrode active material, a second conductive material and a second binder; and (C) manufacturing a positive electrode by forming a positive electrode composite layer including the first composite material and the second composite material. The first positive electrode active material has an average discharge potential lower than that of the second positive electrode active material. The first conductive material has a first OAN. The second conductive material has a second OAN. A ratio of the second OAN to the first OAN is 1.3 or more and 2.1 or less. A sum of the first OAN and the second OAN is 31.64 ml/100 g or less.

公开(公告)号：US20160181619A1

公开(公告)日：2016-06-23

申请号：US14909366

申请日：2014-07-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tatsuya HASHIMOTO ,  Keisuke OHARA ,  Yuji YOKOYAMA ,  Yusuke FUKUMOTO

IPC: H01M4/62 ,  H01M10/0587 ,  H01M10/42 ,  H01M4/36 ,  H01M10/0567 ,  H01M2/34 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M2/345 ,  H01M4/13 ,  H01M4/366 ,  H01M4/622 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0587 ,  H01M10/4235 ,  H01M2200/20

Abstract: A secondary battery includes a wound electrode assembly in which a positive electrode sheet, a negative electrode sheet and a separator are stacked and wound. The positive electrode sheet is provided with a long positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is disposed on the positive electrode current collector. The negative electrode sheet is provided with a long negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is disposed on the negative electrode current collector. The separator is interposed between the positive electrode sheet and the negative electrode sheet. The negative electrode current collector has a first active material layer-free region at one edge of the negative electrode current collector in a winding direction of an axis of the wound electrode assembly. The first active material layer-free region is a region where the negative electrode active material layer is not formed. The positive electrode current collector has a second active material layer-free region at one edge of the positive electrode current collector in a winding direction of an axis of the wound electrode assembly. The second active material layer-free region is a region where the positive electrode active material layer is not formed. The negative electrode current collector and the positive electrode current collector are disposed, with the first active material layer-free region and the second active material layer-free region being projected toward opposite sides in the winding direction of the axis of the wound electrode assembly. A width of the negative electrode active material layer is wider than a width of the positive electrode active material layer and a bacterial cellulose is disposed in at least a surface layer of the negative electrode active material layer that faces the second active material layer-free region.

Abstract translation: 二次电池包括堆积并缠绕正极片，负极片和隔膜的卷绕电极组件。 正极片具有长的正极集电体和正极活性物质层。 正极活性物质层设置在正极集电体上。 负极片设置有长负极集电体和负极活性物质层。 负极活性物质层设置在负极集电体上。 分离器介于正极片和负极片之间。 负极集电体在卷绕电极组件的轴线的卷绕方向上在负极集电体的一个边缘处具有第一无活性物质层的区域。 第一无活性物质层的区域是没有形成负极活性物质层的区域。 正极集电体在卷绕电极组件的轴线的卷绕方向上在正极集电体的一个边缘处具有第二无活性材料层的区域。 第二无活性物质层的区域是没有形成正极活性物质层的区域。 所述负极集电体和所述正极集电体配置成具有所述第一无活性物质层的区域和所述第二无活性物质层的区域朝向所述卷绕电极组件的轴线的卷绕方向的相对侧突出。 负极活性物质层的宽度比正极活性物质层的宽度宽，细菌纤维素配置在负极活性物质层的面向第二无活性物质层的区域的至少一个表面层 。

公开(公告)号：US20160093877A1

公开(公告)日：2016-03-31

申请号：US14837214

申请日：2015-08-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya UMEYAMA ,  Yusuke FUKUMOTO ,  Hideki SANO ,  Yuji YOKOYAMA ,  Tatsuya HASHIMOTO

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M4/525 ,  H01M4/62 ,  H01M4/505

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/624 ,  H01M4/625 ,  H01M4/661 ,  H01M4/663 ,  H01M4/667 ,  H01M2004/021

Abstract: A positive electrode collector includes a main body layer and a surface layer. The surface layer is provided at least at a portion of a surface of the main body layer where the positive electrode mixture layer is provided, and is made of a carbon material. A first positive electrode active material is made of first lithium complex oxide having a layered crystal structure. A second positive electrode active material includes a particle made of second lithium complex oxide having an olivine crystal structure, a carbon film provided at least at a part of a surface of the particle, and alginic acid salt provided at least at a part of a surface of the carbon film. A conducting agent in the positive electrode mixture layer includes a carbon particle and alginic acid salt provided at least at a part of a surface of the carbon particle.

Abstract translation: 正极集电体包括主体层和表面层。 表面层至少设置在设置正极合剂层的主体层的表面的一部分上，并且由碳材料制成。 第一正极活性物质由具有层状晶体结构的第一锂复合氧化物制成。 第二正极活性物质包括由具有橄榄石晶体结构的第二锂复合氧化物制成的颗粒，至少在颗粒表面的一部分提供的碳膜和至少在表面的一部分提供的藻酸盐 的碳膜。 正极合剂层中的导电剂包括至少在碳粒子表面的一部分设置的碳粒子和藻酸盐。