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公开(公告)号：US20060194116A1
公开(公告)日：2006-08-31
申请号：US10568536
申请日：2004-09-13
申请人： Kohei Suzuki , Tsumoru Ohata , Junji Nakajima , Akiko Fujino , Shigeo Ikuta , Tetsuya Hayashi , Yusuke Fukumoto , Shinji Kasamatsu
发明人： Kohei Suzuki , Tsumoru Ohata , Junji Nakajima , Akiko Fujino , Shigeo Ikuta , Tetsuya Hayashi , Yusuke Fukumoto , Shinji Kasamatsu
CPC分类号： H01M2/166 , H01M2/1673 , H01M2/168 , H01M2/18 , H01M4/133 , H01M4/134 , H01M4/621 , H01M10/052 , H01M10/0525 , H01M10/4235
摘要： A lithium ion secondary battery includes a positive electrode capable of absorbing and desorbing lithium ion, a negative electrode capable of absorbing and desorbing lithium ion, a porous film interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, the porous film being adhered to a surface of at least the negative electrode. The porous film includes an inorganic filler and a first binder: The content of the first binder in the porous film is 1.5 to 8 parts by weight per 100 parts by weight of the filler: The first binder includes a first rubber including an acrylonitrile unit: The first rubber is water-insoluble and has a decomposition temperature of 250° C. or higher. The negative electrode includes a negative electrode active material capable of absorbing and desorbing lithium ion and a second binder, and the second binder includes a second rubber particle and a water-soluble polymer.
摘要翻译： 锂离子二次电池包括能够吸收和解吸锂离子的正极，能够吸收和解吸锂离子的负极，介于正极和负极之间的多孔膜和非水电解质，多孔 膜至少粘附在至少负极的表面上。 多孔膜包括无机填料和第一粘合剂：多孔膜中的第一粘合剂的含量相对于100重量份的填料为1.5〜8重量份。第一粘合剂包括含有丙烯腈单元的第一橡胶： 第一橡胶是水不溶性的，分解温度为250℃以上。 负极包括能够吸收和解吸锂离子的负极活性物质和第二粘合剂，第二粘合剂包括第二橡胶颗粒和水溶性聚合物。
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公开(公告)号：US10446824B2
公开(公告)日：2019-10-15
申请号：US14358163
申请日：2011-11-15
申请人： Masahiro Morita , Yusuke Fukumoto
发明人： Masahiro Morita , Yusuke Fukumoto
摘要： A nonaqueous electrolyte secondary battery in accordance with the present invention is provided with an electrode body 20 including a positive electrode 30 and a negative electrode 50, and a nonaqueous electrode. The electrode body 20 is constituted by a plurality of different constituent members. At least two constituent members among the plurality of constituent members constituting the electrode body 20 include respective particulate polymers 38, 28 having a melting point within a temperature range from 80° C. to 120° C., with these two members being different from each other. The electrode body 20 is provided with the positive electrode 30 including a positive electrode active material layer 34 on a positive electrode collector 32, the negative electrode 50 including a negative electrode active material layer 54 on a negative electrode collector 52, separators 70A, 70B interposed between the positive electrode 30 and the negative electrode 50, and nonaqueous electrolyte. It is preferred that two or all of the positive electrode 30, the negative electrode 50, and the separators 70A, 70B include the particulate polymers 38, 78.
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公开(公告)号：US09698397B2
公开(公告)日：2017-07-04
申请号：US14356458
申请日：2011-11-10
IPC分类号： H01M2/16 , H01M2/18 , H01M2/34 , H01M10/04 , H01M10/0587
CPC分类号： H01M2/1653 , H01M2/18 , H01M2/34 , H01M10/0431 , H01M10/0587
摘要： A battery includes a flat wound electrode body formed by winding a positive electrode sheet and a negative electrode sheet with a separator interposed therebetween into a flat shape. The separator has an outer edge adjacent portion adjacent to either an outer edge of a positive electrode active material layer or an outer edge of a negative electrode active material layer. In a curve positioned portion disposed at least in a curved portion of the flat wound electrode body, the outer edge adjacent portion has a suppression portion for suppressing the occurrence or development of a crack.
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公开(公告)号：US09209502B2
公开(公告)日：2015-12-08
申请号：US14004440
申请日：2011-03-16
IPC分类号： H01M2/14 , H01M10/658 , H01M2/16 , H01M10/052
CPC分类号： H01M10/613 , H01M2/1646 , H01M2/1653 , H01M2/166 , H01M2/1686 , H01M10/052 , Y02E60/122
摘要： The present invention provides a non-aqueous electrolyte secondary battery with great high-rate discharge properties while being less susceptible to an extensive internal short circuit and likely to provide proper assembly. The non-aqueous electrolyte secondary battery comprises a separator (13) placed between a positive electrode and a negative electrode. Separator (13) comprises a porous resin layer (60), and a porous heat-resistant layer (70) overlaid at least on a first face of resin layer (60). Heat-resistant layer (70) comprises a filler consisting of an inorganic material, and a binder. Heat-resistant layer (70) has a porosity of 55% or higher. Heat-resistant layer (70) exhibits a 90° peel strength of 2.9 N/m to 15.1 N/m to the resin layer (60).
摘要翻译： 本发明提供一种具有高放电特性的非水电解质二次电池，同时不易产生广泛的内部短路并且可能提供适当的组装。 非水电解质二次电池包括放置在正极和负极之间的隔膜（13）。 分离器（13）包括多孔树脂层（60）和至少覆盖在树脂层（60）的第一面上的多孔耐热层（70）。 耐热层（70）包括由无机材料和粘合剂组成的填料。 耐热层（70）的孔隙率为55％以上。 耐热层（70）对树脂层（60）的剥离强度为2.9N / m〜15.1N / m。
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公开(公告)号：US20140322600A1
公开(公告)日：2014-10-30
申请号：US14358163
申请日：2011-11-15
申请人： Masahiro Morita , Yusuke Fukumoto
发明人： Masahiro Morita , Yusuke Fukumoto
IPC分类号： H01M2/34
摘要： A nonaqueous electrolyte secondary battery in accordance with the present invention is provided with an electrode body 20 including a positive electrode 30 and a negative electrode 50, and a nonaqueous electrode. The electrode body 20 is constituted by a plurality of different constituent members. At least two constituent members among the plurality of constituent members constituting the electrode body 20 include respective particulate polymers 38, 28 having a melting point within a temperature range from 80° C. to 120° C., with these two members being different from each other. The electrode body 20 is provided with the positive electrode 30 including a positive electrode active material layer 34 on a positive electrode collector 32, the negative electrode 50 including a negative electrode active material layer 54 on a negative electrode collector 52, separators 70A, 70B interposed between the positive electrode 30 and the negative electrode 50, and nonaqueous electrolyte. It is preferred that two or all of the positive electrode 30, the negative electrode 50, and the separators 70A, 70B include the particulate polymers 38, 78.
摘要翻译： 根据本发明的非水电解质二次电池设置有包括正极30和负极50的电极体20和非水电极。 电极体20由多个不同的构成部件构成。 构成电极体20的多个构成构件中的至少两个构成构件包括熔点在80℃〜120℃的温度范围内的各自的微粒聚合物38,28，这两个构件不同于 其他。 电极体20具有在正极集电体32上具有正极活性物质层34的正极30，在负极集电体52上具有负极活性物质层54的负极50，插入了隔板70A，70B 正电极30和负电极50之间以及非水电解质。 正极30，负极50和隔板70A，70B中的两个或全部优选包括颗粒聚合物38,78。
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公开(公告)号：US20130143091A1
公开(公告)日：2013-06-06
申请号：US13817162
申请日：2010-08-19
IPC分类号： H01M4/62
CPC分类号： H01M4/626 , H01M2/1646 , H01M4/13 , H01M10/0566 , H01M10/0587 , Y02E60/122
摘要： A non-aqueous electrolyte secondary battery obtained by the present invention is a non-aqueous electrolyte secondary battery including an electrode body having a positive electrode sheet and a negative electrode sheet 20 stacked via a separator sheet 40. A porous layer 42 having filler particles 44 and a binder is formed between the separator sheet 40 and at least one of the positive electrode sheet and the negative electrode sheet 20. The median value in the circularity distribution of the filler particles 44 contained in the porous layer 42 is 0.85 to 0.97.
摘要翻译： 通过本发明获得的非水电解质二次电池是具有通过隔板40堆叠的具有正极片和负极片20的电极体的非水电解质二次电池。具有填充剂粒子44的多孔层42 并且在隔离片40与正极片和负极片20中的至少一个之间形成粘结剂。包含在多孔层42中的填料颗粒44的圆形度分布中的中值为0.85至0.97。
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公开(公告)号：US20130084503A1
公开(公告)日：2013-04-04
申请号：US13703949
申请日：2010-06-15
IPC分类号： H01M4/62
CPC分类号： H01M4/626 , H01M2/1646 , H01M10/052 , H01M10/0566 , H01M10/0587 , Y02E60/122
摘要： A nonaqueous electrolyte secondary battery provided by the present invention includes an electrode body in which a positive electrode sheet and a negative electrode sheet 20 are laminated with a separator sheet 40 interposed therebetween. A porous layer 42 including an inorganic filler and a binder is formed on at least one surface of the separator sheet 40. The surface of the porous layer 42 is made uneven by forming peaks and valleys, and a maximum difference of elevation on an uneven surface 42a is 0.2 μm to 1.7 μm.
摘要翻译： 本发明提供的非水电解质二次电池包括其中正极片和负极片20层叠有间隔片40的电极体。 在隔片40的至少一个表面上形成包括无机填料和粘合剂的多孔层42.多孔层42的表面通过形成峰谷形成为不均匀，并且在不平坦表面上的最大高度差 42a为0.2μm〜1.7μm。
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公开(公告)号：US08163425B2
公开(公告)日：2012-04-24
申请号：US12213504
申请日：2008-06-20
IPC分类号： H01M6/04
CPC分类号： H01M4/624 , H01M2/166 , H01M2/1673 , H01M4/13 , H01M4/366 , H01M4/62 , H01M10/0525 , H01M2004/021
摘要： A secondary battery includes: a positive electrode; a negative electrode; a porous electron-insulating layer adhered to a surface of at least one selected from the group consisting of the positive electrode and the negative electrode; and an electrolyte. The porous electron-insulating layer comprises a particulate filler and a resin binder, and the particulate filler comprises an indefinite-shape particle comprising a plurality of primary particles that are joined to one another. A neck is preferably formed between the primary particles. Since the porous electron-insulating layer has high porosity, it is possible to obtain a secondary battery that exhibits excellent low-temperature characteristics, which are particularly important in actual use, and that is capable of discharging at a large current.
摘要翻译： 二次电池包括：正极; 负极; 粘附到从由正极和负极组成的组中选择的至少一个的表面的多孔电子绝缘层; 和电解质。 多孔电绝缘层包括颗粒填料和树脂粘合剂，并且颗粒填料包括包含彼此连接的多个一次颗粒的不定形颗粒。 优选在一次粒子之间形成颈部。 由于多孔电绝缘层具有高孔隙率，所以可以获得在实际应用中特别重要的且具有大电流放电的低温特性优异的二次电池。
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公开(公告)号：US20100227207A1
公开(公告)日：2010-09-09
申请号：US11520571
申请日：2006-09-14
申请人： Yusuke Fukumoto , Kaoru Inoue
发明人： Yusuke Fukumoto , Kaoru Inoue
IPC分类号： H01M6/10
CPC分类号： H01M2/166 , H01M4/13 , H01M10/0525 , H01M10/0587 , H01M2004/021
摘要： A non-aqueous electrolyte secondary battery having a high negative electrode energy density, good safety and high discharge characteristics is provided without damaging manufacturing facilities. The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a porous heat-resistant layer interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a negative electrode current collector and a negative electrode mixture layer on a surface of the negative electrode current collector, and the negative electrode mixture layer has an active material density of 1.5 g/ml to 1.8 g/ml. The porous heat-resistant layer is carried on the negative electrode, and the porous heat-resistant layer comprises magnesium oxide particles having a mean particle size of 0.5 μm to 2 μm.
摘要翻译： 提供具有高的负极能量密度，良好的安全性和高放电特性的非水电解质二次电池，而不损坏制造设备。 非水电解质二次电池包括正极，负极，介于正极和负极之间的多孔耐热层和非水电解质。 负极包含负极集电体的负极集电体和负极混合层，负极复合层的活性物质密度为1.5g / ml〜1.8g / ml。 多孔耐热层承载在负极上，多孔耐热层包括平均粒径为0.5μm至2μm的氧化镁颗粒。
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公开(公告)号：US07560193B2
公开(公告)日：2009-07-14
申请号：US11314008
申请日：2005-12-22
申请人： Shigeo Ikuta , Yusuke Fukumoto
发明人： Shigeo Ikuta , Yusuke Fukumoto
CPC分类号： H01M4/24 , H01M2/164 , H01M4/02 , H01M4/04 , H01M4/131 , H01M4/133 , H01M4/48 , H01M10/04 , H01M10/052 , H01M10/0525 , H01M10/24 , H01M2004/021 , Y10T29/49115
摘要： In a secondary battery including a positive electrode, a negative electrode and a porous film bonded to the surface of at least one of the positive electrode and the negative electrode, the porous film includes ceramic particles and a binder, and the ceramic particles include polycrystalline particles obtained by mechanically crushing a fired material comprising a ceramic that is directly synthesized from a ceramic precursor. The porous film has a porosity of 40 to 80%, for example. The porous film can be formed by a method including the steps of: obtaining a fired material comprising a ceramic from a ceramic precursor; obtaining ceramic particles by mechanically crushing the fired material of the ceramic; obtaining a slurry including the ceramic particles and a binder; and applying the slurry onto the surface of an electrode, followed by drying.
摘要翻译： 在包含正极，负极和与正极和负极中的至少一个的表面接合的多孔膜的二次电池中，多孔膜包括陶瓷颗粒和粘合剂，陶瓷颗粒包括多晶颗粒 通过机械粉碎包含由陶瓷前体直接合成的陶瓷的烧制材料获得。 多孔膜的孔隙率例如为40〜80％。 多孔膜可以通过以下方法形成：包括以下步骤：从陶瓷前体获得包含陶瓷的烧制材料; 通过机械破碎陶瓷烧制材料获得陶瓷颗粒; 得到包含陶瓷颗粒和粘合剂的浆料; 并将浆料施加到电极的表面上，然后干燥。
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