公开(公告)号：US20110151296A1

公开(公告)日：2011-06-23

申请号：US13058412

申请日：2009-06-02

申请人： Yoshiyuki Muraoka ,  Kazuhiro Okamura ,  Masaya Ugaji

发明人： Yoshiyuki Muraoka ,  Kazuhiro Okamura ,  Masaya Ugaji

IPC分类号： H01M4/00 ,  H01M10/04

CPC分类号： H01M10/0587 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/345 ,  H01M2004/021 ,  Y10T29/49115

摘要： A nonaqueous electrolyte secondary battery includes an electrode group (8) formed by winding a positive electrode (4) and a negative electrode (5) with a porous insulating layer (6) interposed therebetween. The positive electrode (4) includes a positive electrode material mixture layer (4B) and a positive electrode current collector (4A). The positive electrode material mixture layer (4B) has a porosity of 20% or lower. ε≧η/ρ is satisfied, where η is the thickness of the positive electrode material mixture layer (4B) on a surface located inside in the radial direction of the electrode group (8) of surfaces of the positive electrode current collector (4A), ρ is the minimum radius of curvature of the positive electrode (4), and ε is a tensile extension in the winding direction of the positive electrode (4). The frequency distribution curve for the particle sizes of a positive electrode active material has two or more peaks.

摘要翻译： 非水电解质二次电池包括通过将正极（4）和负极（5）卷绕在其间的多孔绝缘层（6）而形成的电极组（8）。 正极（4）包括正极合剂层（4B）和正极集电体（4A）。 正极合剂层（4B）的孔隙率为20％以下。 ＆egr;≧＆eegr; /＆rgr; 满意，在哪里 是位于正极集电体（4A）的表面的电极组（8）的径向内侧的表面上的正极合剂层（4B）的厚度， 是正极（4）的最小曲率半径，＆egr; 是正极（4）的卷绕方向的拉伸伸长率。 正极活性物质的粒径的频率分布曲线具有两个以上的峰值。

公开(公告)号：US20110195307A1

公开(公告)日：2011-08-11

申请号：US13122813

申请日：2010-04-23

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji

IPC分类号： H01M4/66 ,  H01M4/50 ,  H01M4/52 ,  H01M4/62 ,  H01M4/04 ,  B05D5/12 ,  B05D3/02

CPC分类号： H01M4/661 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M4/622 ,  H01M4/623 ,  H01M2004/021 ,  H01M2004/028

摘要： A nonaqueous electrolyte secondary battery includes a positive electrode (4), a negative electrode (5), and a porous insulating layer (6). The porous insulating layer (6) is provided between the positive electrode (4) and the negative electrode (5). A tensile extension percentage of the positive electrode (4) is 3% or more. In other words, a positive electrode current collector (4A) contains an aluminum particle whose average particle size is 1 μm or more. A positive electrode mixture layer (4B) is provided on at least one surface of the positive electrode current collector (4A), and contains a positive electrode active material and an organic material whose melting point or softening point is higher than 200° C.

摘要翻译： 非水电解质二次电池包括正极（4），负极（5）和多孔绝缘层（6）。 多孔绝缘层（6）设置在正极（4）和负极（5）之间。 正极（4）的拉伸伸长率为3％以上。 换句话说，正极集电体（4A）含有平均粒径为1μm以上的铝粒子。 在正极集电体（4A）的至少一个面上设置正极合剂层（4B），并且含有正极活性物质和熔点或软化点高于200℃的有机材料。

公开(公告)号：US20110135982A1

公开(公告)日：2011-06-09

申请号：US13058791

申请日：2010-06-29

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji ,  Shinji Kasamatsu

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji ,  Shinji Kasamatsu

IPC分类号： H01M4/13 ,  H01M4/62 ,  F27D7/00 ,  H01M10/36 ,  H01M10/04

CPC分类号： H01M10/0587 ,  H01M4/139 ,  H01M4/36 ,  H01M4/366 ,  H01M4/621 ,  H01M4/622 ,  H01M10/052 ,  Y02T10/7011 ,  Y10T29/49108 ,  Y10T29/49115

摘要： A negative electrode, whose tensile strength is 15 N/cm or lower when the percentage elongation in the longitudinal direction is 1%, is used in a non-aqueous electrolyte secondary battery including: a flat electrode group 10 including a positive electrode, the negative electrode and a separator; and a non-aqueous electrolyte, which are housed in a prismatic battery case. This negative electrode includes a negative electrode current collector and a negative electrode active material layer which includes: (1) a negative electrode active material which expands and contracts by absorbing and desorbing lithium ions; (2) a rubber binder whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector; (3) a water-soluble polymer A whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector; and (4) a water-soluble polymer B whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector and whose degree of swelling relative to the non-aqueous electrolyte is lower than that of the water-soluble polymer A. Formed on the surface of the negative electrode active material is a coating layer including the water-soluble polymer A.

摘要翻译： 在非水电解质二次电池中使用长径方向伸长率为1％时的拉伸强度为15N / cm以下的负极，该非水电解质二次电池包括：具有正极的负极组10，负极 电极和分离器; 和非水电解质，其被容纳在棱柱形电池壳体中。 该负极包括负极集电体和负极活性物质层，其包括：（1）通过吸收和解吸锂离子而膨胀和收缩的负极活性物质; （2）热分解温度等于或高于负极集电体的软化温度的橡胶粘合剂; （3）热分解温度为负极集电体的软化温度以上的水溶性聚合物A， 和（4）热分解温度等于或高于负极集电体的软化温度并且相对于非水电解质的溶胀度低于水溶性聚合物B的水溶性聚合物B 聚合物A.形成在负极活性物质的表面上的是包含水溶性聚合物A的涂层。

公开(公告)号：US20090274951A1

公开(公告)日：2009-11-05

申请号：US12428760

申请日：2009-04-23

申请人： Masahiro Kinoshita ,  Masaya Ugaji ,  Yoshiyuki Muraoka

发明人： Masahiro Kinoshita ,  Masaya Ugaji ,  Yoshiyuki Muraoka

IPC分类号： H01M6/10 ,  H01M4/82

CPC分类号： H01M4/134 ,  H01M4/0404 ,  H01M4/1395 ,  H01M10/0431 ,  H01M10/0587 ,  Y10T29/49108

摘要： A nonaqueous electrolyte secondary battery includes an electrode group in which a positive electrode plate including a positive electrode active material formed on a positive electrode current collector and a negative electrode plate including a negative electrode active material formed on a negative electrode current collector are wound with a separator interposed therebetween, and a tensile elongation rate of the positive electrode plate is larger than a tensile elongation rate of the negative electrode plate.

摘要翻译： 非水电解质二次电池包括电极组，其中包括形成在正极集电体上的正极活性材料的正极板和包含形成在负极集电体上的负极活性材料的负极板缠绕在 并且正极板的拉伸伸长率大于负极板的拉伸伸长率。

公开(公告)号：US09257717B2

公开(公告)日：2016-02-09

申请号：US14233149

申请日：2012-04-03

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji ,  Takahiro Aoyama ,  Haruya Nakai

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji ,  Takahiro Aoyama ,  Haruya Nakai

IPC分类号： H01M4/13 ,  H01M4/70 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0587 ,  H01M10/42

CPC分类号： H01M10/0431 ,  H01M4/13 ,  H01M4/70 ,  H01M10/052 ,  H01M10/0587 ,  H01M2010/4292 ,  Y02E60/122 ,  Y02T10/7011

摘要： In a wound electrode group, a positive electrode includes positive electrode active material layers formed on both surfaces of a band-like positive electrode current collector, and a negative electrode includes negative electrode active material layers on both surfaces of a band-like negative electrode current collector. Charge capacity of the negative electrode falls within a range of 83-99% of theoretical capacity of the negative electrode in a full charge state of a nonaqueous electrolyte secondary battery. An active material mass M1 per unit area of a negative electrode active material layer formed on an outer circumference of the negative electrode current collector, and an active material mass M2 per unit area of a negative electrode active material layer formed on an inner circumference satisfy a relational expression of M1/M2

摘要翻译： 在卷绕电极组中，正极包括在带状正极集电体的两个表面上形成的正极活性物质层，负极在带状负极电流的两面具有负极活性物质层 集电极。 在非水电解质二次电池的满充电状态下，负极的充电容量落在负极的理论容量的83-99％的范围内。 形成在负极集电体的外周上的负极活性物质层的单位面积的活性物质质量M1和形成在内周上的负极活性物质层的单位面积的活性物质质量M2满足 M1 / M2 <（R1 + t / 2）/（R1-t / 2）的关系表达式，其中电极组具有最内径R1，负极具有厚度t。

公开(公告)号：US20110244325A1

公开(公告)日：2011-10-06

申请号：US13124580

申请日：2010-06-24

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji

IPC分类号： H01M4/66 ,  H01M2/14 ,  B05D5/12

CPC分类号： H01M10/052 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/662 ,  H01M2004/021 ,  H01M2004/028

摘要： A nonaqueous electrolyte secondary battery includes a positive electrode (4), a negative electrode (5), a porous insulating layer (6), and a nonaqueous electrolyte. In the positive electrode (4), a positive electrode mixture layer (4B) is provided on at least one surface of a positive electrode current collector (4A). A tensile extension percentage of the positive electrode (4) is 3.0% or more. The positive electrode current collector (4A) contains iron. A porosity of the positive electrode mixture layer (4B) is 17% or less.

摘要翻译： 非水电解质二次电池包括正极（4），负极（5），多孔绝缘层（6）和非水电解质。 在正极（4）中，在正极集电体（4A）的至少一个面上设置正极合剂层（4B）。 正极（4）的拉伸伸长率为3.0％以上。 正极集电体（4A）含有铁。 正极复合层（4B）的孔隙率为17％以下。

公开(公告)号：US20120007564A1

公开(公告)日：2012-01-12

申请号：US13257138

申请日：2010-12-01

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji

IPC分类号： H02J7/00 ,  H01M4/131 ,  H01M4/62

CPC分类号： H01M10/05 ,  H01M4/13 ,  H01M4/131 ,  H01M10/052 ,  H01M10/44 ,  H01M2004/021 ,  Y02T10/7011

摘要： A nonaqueous electrolyte secondary battery includes: a positive electrode 1; and a negative electrode 2. When the battery is charged in an environment of 25° C. at a constant current of 0.7 C until a voltage value reaches 4.2 V, and is charged at a constant voltage of 4.2 V until a current value decreases to 0.05 C, capacity of the electrode per unit area is 3.5 mAh/cm2 to 7.0 mAh/cm2, both inclusive, and charge capacity of the negative electrode active material is 300 mAh/g to 330 mAh/g, both inclusive. Internal resistance of the battery is controlled in such a manner that the voltage value reaches 4.2 V when the battery is charged to 50% to 85%, both inclusive, of standard capacity in the environment of 25° C. at the constant current of 0.7 C.

摘要翻译： 非水电解质二次电池包括：正极1; 和负极2.当电池以恒定电流0.7℃在25℃的环境中充电直到电压值达到4.2V，并且以4.2V的恒定电压充电直到电流值减小到 0.05C，单位面积电极的容量为3.5mAh / cm 2〜7.0mAh / cm 2，负极活性物质的充电容量为300mAh / g〜330mAh / g，包括端值。 电池的内部电阻以这样的方式进行控制，即当电池在25℃的恒定电流为0.7的情况下将电池充电至标准容量的50％至85％时，电压值达到4.2V C。

公开(公告)号：US20110183173A1

公开(公告)日：2011-07-28

申请号：US13122511

申请日：2010-06-17

申请人： Yoshiyuki Muraoka ,  Masaya Ugaji

发明人： Yoshiyuki Muraoka ,  Masaya Ugaji

IPC分类号： H01M10/36 ,  H01M10/04 ,  H01M4/04

CPC分类号： H01M10/0587 ,  H01M4/13 ,  H01M4/364 ,  H01M4/621 ,  H01M4/64 ,  H01M10/05 ,  H01M2004/021 ,  Y10T29/49115

摘要： A rectangular nonaqueous electrolyte secondary battery includes a positive electrode (11) and a negative electrode (12) wound with a porous insulating layer (13) interposed therebetween. The positive electrode (11) includes a positive electrode current collector (11A), and a positive electrode material mixture layer (11B). The positive electrode material mixture layer (11B) is provided on each of surfaces, or one of surfaces of the positive electrode current collector (11A), contains a positive electrode active material and a binder, and has a porosity of 17% or lower. The positive electrode (11) has a tensile strength of 15 N/cm or lower when a tensile extension of the positive electrode is 1%. A peel strength between the positive electrode current collector (11A) and the positive electrode material mixture layer (11B) is 3 N/m to 15 N/m, both inclusive.

摘要翻译： 矩形非水电解质二次电池包括夹在其间的多孔绝缘层（13）的正极（11）和负极（12）。 正极（11）包括正极集电体（11A）和正极合剂层（11B）。 在正极集电体（11A）的表面的每一个表面上设置正极合剂层（11B），其中，正极活性物质和粘合剂的表面中的一个表面具有17％以下的孔隙率。 当正极的拉伸伸长率为1％时，正极（11）的拉伸强度为15N / cm以下。 正极集电体（11A）和正极合剂层（11B）之间的剥离强度为3N / m〜15N / m。

公开(公告)号：US20110287288A1

公开(公告)日：2011-11-24

申请号：US12525643

申请日：2009-02-02

申请人： Yasuhiko Hina ,  Yoshiyuki Muraoka

发明人： Yasuhiko Hina ,  Yoshiyuki Muraoka

IPC分类号： H01M4/70 ,  H01M10/05 ,  H01M4/04 ,  H01M4/66

CPC分类号： H01M10/0587 ,  H01M2/1673 ,  H01M4/0404 ,  H01M4/1391 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2010/4292 ,  Y02T10/7011

摘要： A nonaqueous electrolyte secondary battery includes an electrode group (8) including a positive electrode (4) in which a positive electrode material mixture layer (4B) is provided on a positive electrode current collector (4A), a negative electrode (5) in which a negative electrode material mixture layer (5B) is provided on a negative electrode current collector (5A), and a porous insulating film (6). The positive electrode (4) and the negative electrode (5) are wound with the porous insulating layer (6) interposed. The positive electrode material mixture layer (4B) is provided on at least one of opposite surfaces of the positive electrode current collector (4A) located inside in a radial direction of the electrode group (8). The positive electrode material mixture layer (4B) has a porosity of 20% or lower. Where η is a thickness of the positive electrode material mixture layer (4B) provided on the surface located inside in the radial direction of the electrode group (8) of the surfaces of the positive electrode current collector (4A), ρ is a minimum radius of curvature of the positive electrode (4), and ε is a tensile extension in a winding direction of the positive electrode (4), ε≧η/ρ is satisfied.

摘要翻译： 非水电解质二次电池包括在正极集电体（4A）上设置有正极复合层（4B）的正极（4）的电极组（8），负极（5） 在负极集电体（5A）和多孔绝缘膜（6）上设置负极复合层（5B）。 将正极（4）和负极（5）夹在多孔绝缘层（6）上。 正电极复合层（4B）设置在位于电极组（8）的径向内侧的正极集电体（4A）的至少一个相对面上。 正极合剂层（4B）的孔隙率为20％以下。 何处 是设置在正极集电体（4A）的表面的电极组（8）的径向内侧的表面上的正极复合材料层（4B）的厚度。 是正电极（4）的最小曲率半径，＆egr; 是正极（4）的卷绕方向的拉伸伸长率，＆amp; 满意

公开(公告)号：US20110223456A1

公开(公告)日：2011-09-15

申请号：US13123866

申请日：2010-08-30

申请人： Junichi Sugaya ,  Yoshiyuki Muraoka

发明人： Junichi Sugaya ,  Yoshiyuki Muraoka

IPC分类号： H01M10/36 ,  H01M4/139 ,  H01M10/0587

CPC分类号： H01M10/0587 ,  H01M4/13 ,  H01M4/139 ,  H01M4/621 ,  H01M10/0525 ,  Y10T29/49108 ,  Y10T29/49115

摘要： Disclosed is an electrode used in a wound electrode assembly, the electrode including: a current collector; a first material mixture layer including a first active material, which is formed on one surface of the current collector; and a second material mixture layer including a second active material, which is formed on the other surface of the current collector. When an electrode assembly is assembled, the first material mixture layer is wound in a manner such that it is positioned on the outer side of the second material mixture layer. In a part corresponding to a predetermined region of a cross section of said electrode assembly perpendicular to the winding axis thereof, the radius of curvature of the predetermined region being 3.0×10−3 m or less, the capacity per unit volume of the first material mixture layer is higher than the capacity per unit volume of the second material mixture layer.

摘要翻译： 公开了一种用于卷绕电极组件中的电极，该电极包括：集电器; 包括形成在集电体的一个表面上的第一活性物质的第一材料混合物层; 以及第二材料混合物层，其包括形成在集电体的另一个表面上的第二活性材料。 当组装电极组件时，第一混合物层以使其位于第二材料混合物层的外侧上的方式缠绕。 在对应于垂直于其卷绕轴线的所述电极组件的横截面的预定区域的部分中，预定区域的曲率半径为3.0×10 -3 m或更小，第一材料的每单位体积的容量 混合物层比第二混合物层的每单位体积的容量高。