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：US20060186859A1

公开(公告)日：2006-08-24

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

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.

公开(公告)号：US08471566B2

公开(公告)日：2013-06-25

申请号：US12992011

申请日：2010-01-18

申请人： Hajime Nishino ,  Masato Fujikawa ,  Mikinari Shimada

发明人： Hajime Nishino ,  Masato Fujikawa ,  Mikinari Shimada

IPC分类号： G01R31/00 ,  G01N27/416

CPC分类号： H01M10/42 ,  G01R31/025 ,  H01M2/34 ,  H01M2/345 ,  H01M10/425

摘要： The present invention relates to an apparatus for evaluating an internal short circuit of a battery. An object of the invention is to provide an apparatus capable of evaluating whether or not an internal short circuit has occurred in an electrode group in consideration of pressure applied to the electrode group. An internal short circuit evaluation apparatus according to one embodiment of the invention includes at least a pressure member capable of operating independently and applying pressure to at least a predetermined position of the surface of the electrode group, and a short-circuiting member that is pressed into the predetermined position. An internal short circuit evaluation apparatus according to another embodiment of the invention includes a pressure member having an integrated short-circuiting member.

摘要翻译： 本发明涉及一种用于评估电池内部短路的装置。 本发明的目的是提供一种能够考虑到施加到电极组的压力来评估电极组中是否发生内部短路的装置。 根据本发明的一个实施例的内部短路评估装置至少包括能够独立地操作并且对电极组的表面的至少预定位置施加压力的压力构件和被压入 预定位置。 根据本发明的另一实施例的内部短路评估装置包括具有集成短路构件的压力构件。

公开(公告)号：US08017262B2

公开(公告)日：2011-09-13

申请号：US11339617

申请日：2006-01-26

申请人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Hideharu Takezawa ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Hideharu Takezawa ,  Mikinari Shimada

IPC分类号： H01M10/02 ,  H01M2/16

CPC分类号： H01M10/052 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/1686 ,  H01M4/525 ,  H01M10/4235 ,  Y02T10/7011

摘要： A lithium secondary battery including: an electrode group, a non-aqueous electrolyte and a battery case housing the electrode group and the non-aqueous electrolyte, the electrode group including a positive electrode, a negative electrode and a separator layer interposed between the positive electrode and the negative electrode, wherein an end-of-charge voltage and an end-of-discharge voltage are set in such a manner that the electrode group has an energy density of not less than 700 Wh/L, the separator layer includes a porous heat-resistant layer, and a short circuit area A produced when an internal short circuit has occurred between the positive electrode and the negative electrode, and a reduced area B of the porous heat-resistant layer that is produced by heat generation satisfy 1≦(A+B)/A≦10.

摘要翻译： 一种锂二次电池，其包括：电极组，非水电解质和容纳所述电极组和所述非水电解质的电池壳体，所述电极组包括正极，负极和插入在所述正极之间的隔板层 和负极，其中以使得电极组的能量密度不低于700Wh / L的方式设定充电结束电压和放电终止电压，隔板层包括多孔 耐热层和在正极和负极之间发生内部短路时产生的短路面积A，通过发热产生的多孔耐热层的减少面积B满足1＆lt; nlE;（ A + B）/ A＆nlE; 10。

公开(公告)号：US20110052971A1

公开(公告)日：2011-03-03

申请号：US12747752

申请日：2009-11-05

申请人： Masato Fujikawa ,  Tomohiko Yokoyama ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Tomohiko Yokoyama ,  Mikinari Shimada

IPC分类号： H01M2/26

CPC分类号： H01M10/0587 ,  H01M2/22 ,  H01M2/26 ,  H01M4/661 ,  H01M4/70 ,  H01M10/0431 ,  H01M10/0525 ,  H01M2004/027 ,  Y02T10/7011

摘要： In a battery, an electrode group (4) and an electrolyte are together sealed in a battery case (10). The electrode group (4) includes a positive electrode (1) and the negative electrode (2) which are wound or stacked with a separator (3) interposed therebetween. At least one of the positive electrode (1) and the negative electrode (2) includes a current collector (2A) and an active material layer (2B), and a lead (6) is electrically connected to an exposed portion (21) of the current collector (2A). The lead (6) is arranged to extend from the exposed portion (21) to the outside of the current collector (2A) such that the lead (6) straddles a first edge (21a) which is one of edges constituting the exposed portion (21), and is welded to the exposed portion (21) at a position close to the first edge (21a).

摘要翻译： 在电池中，电极组（4）和电解质一起密封在电池壳体（10）中。 电极组（4）包括正极（1）和负极（2），它们之间插入有隔板（3）卷绕或堆叠。 正极（1）和负极（2）中的至少一个包括集电体（2A）和活性物质层（2B），引线（6）电连接到暴露部分 集电体（2A）。 引线（6）布置成从暴露部分（21）延伸到集电器（2A）的外部，使得引线（6）跨越构成暴露部分的边缘之一的第一边缘（21a） 并且在接近第一边缘（21a）的位置处焊接到暴露部分（21）。

公开(公告)号：US20080186030A1

公开(公告)日：2008-08-07

申请号：US12027126

申请日：2008-02-06

申请人： Shinji Kasamatsu ,  Hajime Nishino ,  Masato Fujikawa ,  Mikinari Shimada

发明人： Shinji Kasamatsu ,  Hajime Nishino ,  Masato Fujikawa ,  Mikinari Shimada

IPC分类号： G01N27/416 ,  G01N25/00

CPC分类号： H01M10/44 ,  H01M2/34 ,  H01M4/131 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/486 ,  H01M2200/00

摘要： An evaluation method for evaluating safety of a battery having an electrode group including a positive electrode plate, a negative electrode plate and a separator inserted between said electrode plates. The method includes the steps of charging the battery to a predetermined voltage; incorporating conductive foreign matter into the charged battery such that the conductive foreign matter is in contact with the positive electrode plate, and not in contact with the negative electrode plate; immersing said battery into which the conductive foreign matter has been incorporated in an electrolyte to dissolve and deposit the conductive foreign matter, thereby causing an internal short circuit to occur in the battery; and evaluating a thermal behavior of the battery in which the internal short circuit has occurred, and outputting results of the evaluation as safety indices.

摘要翻译： 一种用于评估具有包括插入在所述电极板之间的正极板，负极板和隔板的电极组的电池的安全性的评估方法。 该方法包括以下步骤：将电池充电至预定电压; 将导电异物掺入带电电池中，使得导电异物与正极板接触，而不与负极板接触; 将其中已经将导电异物掺入其中的所述电池浸入电解质中以溶解和沉积导电异物，从而在电池中发生内部短路; 并评估发生内部短路的电池的热性能，并输出评价结果作为安全指标。

公开(公告)号：US07378185B2

公开(公告)日：2008-05-27

申请号：US11402056

申请日：2006-04-12

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 ,  H01M2/0207 ,  H01M2/0217 ,  H01M2/1673 ,  H01M10/052 ,  H01M10/4235 ,  Y02T10/7011

摘要： A prismatic lithium secondary battery includes: a prismatic 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 non-aqueous electrolyte. The electrode assembly includes: a positive electrode; a negative electrode; and a porous heat-resistant layer and a separator that are interposed between the positive and negative electrodes. The side wall of the battery can has two rectangular main flat portions that are opposed to each other, and the thickness A of the porous heat-resistant layer and the thickness B of each of the main flat portions of the side wall satisfy the relation: 0.003≦A/B≦0.05.

摘要翻译： 棱柱形锂二次电池包括：棱柱形电池罐，其具有底部，侧壁和敞开的顶部; 电极组件; 非水电解质; 以及覆盖电池壳的开口顶部的密封板，其容纳电极组件和非水电解质。 电极组件包括：正电极; 负极; 以及介于正极和负极之间的多孔耐热层和隔膜。 电池的侧壁可以具有彼此相对的两个矩形主平面部，多孔耐热层的厚度A和侧壁的主平面部的厚度B满足以下关系： 0.003 <= A / B <= 0.05。

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：US08163409B2

公开(公告)日：2012-04-24

申请号：US11798630

申请日：2007-05-15

申请人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

IPC分类号： H01M2/00 ,  H01M10/48

CPC分类号： H01M10/4235 ,  G01R31/025 ,  G01R31/3641 ,  H01M10/052 ,  H01M10/4285 ,  H01M10/48 ,  H01M10/488 ,  Y10T29/49108

摘要： A method for evaluating the safety of a battery under an internal short-circuit condition. The method for evaluating an internal short-circuit of a battery is characterized in that a short-circuit can be caused at a desired location inside the battery. According to the evaluation method of the invention, the evaluation result is not affected by the constitution of the outermost part of the battery unlike nail penetration tests which are conventional evaluation methods. Also, unlike crush tests which are conventional evaluation methods, the locations of short-circuits do not vary among tests and the safety under an internal short-circuit condition can be evaluated accurately.

摘要翻译： 一种用于在内部短路状况下评估电池的安全性的方法。 用于评估电池的内部短路的方法的特征在于，可以在电池内的期望位置处引起短路。 根据本发明的评价方法，评价结果不受作为常规评价方法的指甲穿透试验的电池的最外部的构成的影响。 此外，与常规评估方法的挤压测试不同，短路的位置在测试之间不变，并且可以准确地评估内部短路条件下的安全性。

公开(公告)号：US07754375B2

公开(公告)日：2010-07-13

申请号：US11363189

申请日：2006-02-28

申请人： Masato Fujikawa ,  Hajime Nishino ,  Mikinari Shimada

发明人： Masato Fujikawa ,  Hajime Nishino ,  Mikinari Shimada

IPC分类号： H01M2/14

CPC分类号： H01M10/058 ,  H01M2/16 ,  H01M2/1686 ,  H01M2/18 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/44

摘要： Disclosed is a lithium ion secondary battery wherein an active material layer of at least one of positive and negative electrodes, or a separator carries a porous insulating layer, and the surface of the active material layer or separator carrying the porous insulating layer has a first region in which the porous insulating layer is formed and a second region including plural discontinuous deficient hole portions where the porous insulating layer is not formed. When a given reference deficient hole portion is selected from the plural deficient hole portions and a given circle having an area ten times that of the reference deficient hole portion is set on the surface of the active material layer or separator, the area of a part of the second region surrounded by the circle is controlled to not less than 10 μm2 and not more than 100 mm2.

摘要翻译： 公开了一种锂离子二次电池，其中正极和负极中的至少一个的活性材料层或隔板承载多孔绝缘层，并且承载多孔绝缘层的活性材料层或隔板的表面具有第一区域 其中形成多孔绝缘层，以及包括多个不连续缺陷孔部分的第二区域，其中未形成多孔绝缘层。 当从多个缺陷孔部分选择给定的参考缺陷孔部分并且将具有参考缺陷孔部分的面积的十倍的给定圆圈设置在活性物质层或分离器的表面上时， 由圆圈包围的第二区域被控制在不小于10μm2且不大于100mm2。