公开(公告)号：US20090104529A1

公开(公告)日：2009-04-23

申请号：US11916603

申请日：2006-07-21

申请人： Hajime Nishino ,  Shuji Tsutsumi ,  Shinji Kasamatsu ,  Hideharu Takezawa ,  Mikinari Shimada

发明人： Hajime Nishino ,  Shuji Tsutsumi ,  Shinji Kasamatsu ,  Hideharu Takezawa ,  Mikinari Shimada

IPC分类号： H01M4/58

CPC分类号： H01M4/70 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

摘要： An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics.The present invention relates to an electrode for a lithium ion secondary battery having a material mixture containing active material particles capable of reversibly absorbing and desorbing lithium, and a current collector that carries the material mixture, wherein a surface of the current collector has recessed portions, and an area occupied by the recessed portions accounts for not less than 30% of an a material mixture carrying area of the current collector. The present invention further relates to an electrode for a lithium ion secondary battery wherein, in a cut surface obtained by simultaneously cutting a material mixture and a current collector vertically to an electrode plane, the maximum depth of recessed portions is not less than 1 μm, or a difference between an average thickness of a current collector and a maximum thickness of the current collector is not less than 0.35 μm.

摘要翻译： 本发明的目的是提供一种锂离子二次电池用电极，即使在暴露于诸如指甲穿透试验或粉碎试验等严酷条件下也能够确保高水平的安全性，并且显示出优异的输出特性。 本发明涉及一种锂离子二次电池用电极，其具有包含能够可逆地吸收和解吸锂的活性物质粒子的材料混合物，以及承载该材料混合物的集电体，其中集电体的表面具有凹部， 并且由凹部占据的面积占集电体的混合物承载面积的30％以上。 本发明还涉及一种锂离子二次电池用电极，其特征在于，在与电极平面垂直地同时切割材料混合物和集电体的切断面中，凹部的最大深度为1μm以上， 或者集电体的平均厚度与集电体的最大厚度的差为0.35μm以上。

公开(公告)号：US07336081B2

公开(公告)日：2008-02-26

申请号：US11098378

申请日：2005-04-05

申请人： Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

发明人： Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

IPC分类号： G01N27/416

CPC分类号： G01R31/3679 ,  H01M10/0525 ,  H01M10/4285

摘要： A cell evaluation device has a short circuit detection portion to detect an internal short circuit within a test cell that has been subjected to nail penetration or crushing using the pressure from a pressurization portion, a pressure control portion to halt the operation of the pressurization portion on detection of a short circuit, and a cell information detection portion to collect and record cell information such as the cell temperature. By using such a cell evaluation device, the location of an internal short circuit during an abuse test is specified, and variations in the cell temperature increase accompanying the internal short circuit is minimized.

摘要翻译： 电池评估装置具有短路检测部，用于检测使用来自加压部的压力进行指甲穿透或破碎的测试电池内的内部短路，压力控制部分停止加压部分的操作 检测短路，以及小区信息检测部分，用于收集和记录诸如小区温度的小区信息。 通过使用这样的电池评价装置，规定了在滥用试验期间的内部短路的位置，并且使伴随内部短路的电池温度升高的变化被最小化。

公开(公告)号：US08329334B2

公开(公告)日：2012-12-11

申请号：US11396656

申请日：2006-04-04

申请人： Masato Fujikawa ,  Kohei Suzuki ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Kohei Suzuki ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M2/04 ,  H01M2/16 ,  H01M2/18 ,  H01M4/00 ,  H01M6/10

CPC分类号： H01M10/0525 ,  H01M2/0413 ,  H01M2/1673 ,  H01M10/0587 ,  H01M10/4235 ,  Y02T10/7011

摘要： A lithium secondary battery that is excellent in resistance to short-circuits and heat, is unlikely to suffer a capacity loss due to impact such as dropping, and has a high capacity. The lithium secondary battery includes an electrode assembly including a strip-like positive electrode and a strip-like negative electrode that are wound together with a porous heat-resistant layer interposed therebetween, a non-aqueous electrolyte, and a battery can. The battery has a restricting part for restricting vertical movement of the electrode assembly. The distance A from the restricting part to the inner bottom face of the battery can and the width B of the negative electrode satisfy the relation: 0.965≦B/A≦0.995.

摘要翻译： 耐短路，耐热性优异的锂二次电池不容易因滴落等冲击而产生容量损失，容量大。 锂二次电池包括电极组件，其包括与介于其间的多孔耐热层缠绕在一起的带状正电极和带状负电极，非水电解质和电池罐。 电池具有用于限制电极组件的垂直运动的限制部件。 从电池罐的限制部分到内底面的距离A和负极的宽度B满足关系：0.965＆nlE; B / A＆nlE; 0.995。

公开(公告)号：US20090197153A1

公开(公告)日：2009-08-06

申请号：US12363251

申请日：2009-01-30

申请人： Masato Fujikawa ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Mikinari Shimada

IPC分类号： H01M2/12

CPC分类号： H01M2/12 ,  H01M2/1055

摘要： A battery pack including at least a battery and a casing for accommodating the battery, in which the casing has a ventilation hole communicating with the outside of the casing, and a mesh member made of metal for covering at least the ventilation hole is provided at the side surface of the casing. Preferably, the mesh member is coated with an insulating resin.

摘要翻译： 一种电池组，其至少包括电池和用于容纳电池的壳体，其中，所述壳体具有与所述壳体的外部连通的通气孔，以及用于覆盖至少所述通气孔的金属制成的网状构件 外壳的侧面。 优选地，网状构件涂覆有绝缘树脂。

公开(公告)号：US07560901B2

公开(公告)日：2009-07-14

申请号：US11354935

申请日：2006-02-16

申请人： Masato Fujikawa ,  Masaru Kawabe ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Masaru Kawabe ,  Mikinari Shimada

IPC分类号： H02J7/00 ,  G01N27/416

CPC分类号： G01R31/025 ,  G01R31/36 ,  H02J7/0011 ,  H02J7/0031

摘要： A secondary-battery internal short detection apparatus is provided which is capable of precisely detecting an internal short being generated in a secondary-battery. In this apparatus: an electricity-quantity storage circuit stores in advance a reference electricity-quantity necessary for charging the secondary-battery from a first voltage to a second voltage; an electricity-quantity accumulation circuit measures an accumulative electricity-quantity necessary for charging the secondary-battery from the first voltage to the second voltage; and an internal short detection circuit compares the accumulative electricity-quantity measured by the electricity-quantity accumulation circuit and the reference electricity-quantity stored in the electricity-quantity storage circuit, if the accumulative electricity-quantity is larger than the reference electricity-quantity, then decides that an internal short is generated, and if the accumulative electricity-quantity is equal to, or smaller than, the reference electricity-quantity, then without deciding that an internal short is generated, rewrites the reference electricity-quantity stored in the electricity-quantity storage circuit into the accumulative electricity-quantity.

摘要翻译： 提供一种二次电池内部短路检测装置，其能够精确地检测在二次电池中产生的内部短路。 在该装置中：电量存储电路预先将从二次电池充电所需的基准电量从第一电压存储到第二电压; 电量累积电路测量从第一电压向第二电压充电二次电池所需的累积电量; 并且内部短路检测电路将蓄电量累积电路测得的累积电量和存储在电量存储电路中的参考电量进行比较，如果累积电量大于基准电量， 然后判定内部短路产生，如果累计电量等于或小于参考电量，则不决定发生内部短路，则重写存储在电力中的参考电量 - 数量存储电路进入累计电量。

公开(公告)号：US07419743B2

公开(公告)日：2008-09-02

申请号：US11396646

申请日：2006-04-04

申请人： Masato Fujikawa ,  Kohei Suzuki ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Kohei Suzuki ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M2/18 ,  H01M2/16 ,  H01M4/00

CPC分类号： H01M10/0587 ,  H01M2/1673 ,  H01M4/366 ,  H01M10/052 ,  H01M10/4235 ,  Y02T10/7011

摘要： A cylindrical lithium secondary battery that is resistant to breakage of the porous heat-resistant layer and therefore excellent in both safety and battery characteristics. The cylindrical lithium secondary battery includes: a battery can having a bottom, a side wall, and an open top; an electrode assembly; a non-aqueous electrolyte; and a sealing plate covering the open top of the battery can that accommodates the electrode assembly and the electrolyte. The electrode assembly includes a strip-like positive electrode and a strip-like negative electrode that are wound together with a porous heat-resistant layer and a separator interposed between the positive and negative electrodes. The thickness A of the porous heat-resistant layer and the thickness B of the side wall of the battery can satisfy the relation: 0.005≦A/B≦0.1.

摘要翻译： 一种耐多孔耐热层破损的圆柱形锂二次电池，因此具有优异的安全性和电池特性。 圆筒形锂二次电池包括：具有底部，侧壁和开口顶部的电池壳; 电极组件; 非水电解质; 以及覆盖电池壳体的开口顶部的密封板，其容纳电极组件和电解质。 电极组件包括带状的正电极和带状负电极，其与多孔耐热层一起缠绕在一起，隔离件插入在正极和负极之间。 多孔耐热层的厚度A和电池侧壁的厚度B可以满足以下关系：0.005 <= A / B <= 0.1。

公开(公告)号：US20070190407A1

公开(公告)日：2007-08-16

申请号：US11705510

申请日：2007-02-13

申请人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M2/18 ,  H01M2/08

CPC分类号： H01M2/1673 ,  H01M2/1646 ,  H01M2/166 ,  H01M4/131 ,  H01M4/133 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0587 ,  H01M2004/021 ,  Y02T10/7011

摘要： A lithium secondary battery having enhanced safety, which includes an electrode group, a non-aqueous electrolyte and a battery can for housing them. The electrode group includes: a positive electrode having a strip-shaped positive electrode current collector and a material mixture layer carried thereon; a negative electrode having a strip-shaped negative electrode current collector and a material mixture layer carried thereon; a separator; and a porous heat resistant layer. The positive and negative electrodes are spirally wound with the separator and the porous heat resistant layer interposed therebetween. An outermost surface of the electrode group includes an exposed portion of either of the positive and negative electrode current collectors. The exposed portion faces an inner surface of the battery can with the separator interposed therebetween, and has opposite polarity to that of the battery can.

摘要翻译： 具有增强的安全性的锂二次电池，其包括电极组，非水电解质和用于容纳它们的电池壳。 电极组包括：具有带状正极集电体和承载在其上的材料混合层的正极; 具有带状负极集电体和承载在其上的材料混合层的负极; 分隔符 和多孔耐热层。 正极和负极用隔板螺旋卷绕，并且多孔耐热层插入其间。 电极组的最外表面包括正极集电体和负极集电体中的任一个的露出部分。 暴露部分面对电池壳体的内表面，隔膜间隔开，并且具有与电池罐相反的极性。

公开(公告)号：US08455132B2

公开(公告)日：2013-06-04

申请号：US11698206

申请日：2007-01-26

申请人： Masato Fujikawa ,  Shinji Kasamatsu ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Shinji Kasamatsu ,  Mikinari Shimada

IPC分类号： H01M2/16

CPC分类号： H01M10/0525 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/131 ,  H01M4/133 ,  H01M10/44 ,  H01M10/46

摘要： A lithium ion secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator interposed between the positive electrode and the negative electrode. The separator includes a polyolefin layer and an oxidation-resistant layer. The oxidation-resistant layer includes an oxidation-resistant polymer. A main chain of the oxidation-resistant polymer does not include a —CH2— group and a —CH(CH3)— group. The oxidation-resistant layer faces the positive electrode.

摘要翻译： 锂离子二次电池包括正电极，负电极，非水电解质和介于正电极和负电极之间的隔膜。 隔板包括聚烯烃层和抗氧化层。 抗氧化层包括抗氧化聚合物。 抗氧化聚合物的主链不包括-CH 2 - 基和-CH（CH 3） - 基。 抗氧化层面向正极。

公开(公告)号：US20100178541A1

公开(公告)日：2010-07-15

申请号：US12730687

申请日：2010-03-24

申请人： Masato FUJIKAWA ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato FUJIKAWA ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M6/10

CPC分类号： H01M2/1673 ,  H01M2/1646 ,  H01M2/166 ,  H01M4/131 ,  H01M4/133 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0587 ,  H01M2004/021 ,  Y02T10/7011

摘要： A lithium secondary battery having enhanced safety, which includes an electrode group, a non-aqueous electrolyte and a battery can for housing them. The electrode group includes: a positive electrode having a strip-shaped positive electrode current collector and a material mixture layer carried thereon; a negative electrode having a strip-shaped negative electrode current collector and a material mixture layer carried thereon; a separator; and a porous heat resistant layer. The positive and negative electrodes are spirally wound with the separator and the porous heat resistant layer interposed therebetween. An outermost surface of the electrode group includes an exposed portion of either of the positive and negative electrode current collectors. The exposed portion faces an inner surface of the battery can with the separator interposed therebetween, and has opposite polarity to that of the battery can.

摘要翻译： 具有增强的安全性的锂二次电池，其包括电极组，非水电解质和用于容纳它们的电池壳。 电极组包括：具有带状正极集电体和承载在其上的材料混合层的正极; 具有带状负极集电体和承载在其上的材料混合层的负极; 分隔符 和多孔耐热层。 正极和负极用隔板螺旋卷绕，并且多孔耐热层插入其间。 电极组的最外表面包括正极集电体和负极集电体中的任一个的露出部分。 暴露部分面对电池壳体的内表面，隔膜间隔开，并且具有与电池罐相反的极性。

公开(公告)号：US07695854B2

公开(公告)日：2010-04-13

申请号：US11698094

申请日：2007-01-26

申请人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Kaoru Inoue ,  Mikinari Shimada

IPC分类号： H01M4/64

CPC分类号： H01M10/0525 ,  H01M2/14 ,  H01M2/1673 ,  H01M2/1686 ,  H01M2/26 ,  H01M4/13 ,  H01M4/70 ,  H01M10/044 ,  Y02T10/7011

摘要： A lithium secondary battery including: a positive electrode including a strip-shaped positive electrode current collector and a positive electrode active material layer carried on each surface of the positive electrode current collector; a negative electrode including a strip-shaped negative electrode current collector and a negative electrode active material layer carried on each surface of the negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein an exposed portion carrying no active material layer is formed on a substantially center portion in a longitudinal direction of a least one of the positive electrode current collector and the negative electrode current collector, a current collecting lead is connected to the exposed portion, and a first heat resistant layer is formed such that the first heat resistant faces at least part of the current collecting lead.

摘要翻译： 一种锂二次电池，包括：正极，包括带状正极集电体和在正极集电体的每个表面上承载的正极活性物质层; 在负极集电体的各表面上承载有带状的负极集电体和负极活性物质层的负极， 夹在正极和负极之间的隔膜; 和非水电解质，其中，在正极集电体和负极集电体中的至少一个的长度方向的大致中央部形成有不具有活性物质层的露出部，连结集电引线 并且形成第一耐热层，使得第一耐热面朝向集流引线的至少一部分。