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：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：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。

公开(公告)号：US20060286438A1

公开(公告)日：2006-12-21

申请号：US11473328

申请日：2006-06-23

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： H01M2/16 ,  H01M2/18 ,  H01M10/50 ,  H01M4/40

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 <= （A + B）/ A> = 10。

公开(公告)号：US08168314B2

公开(公告)日：2012-05-01

申请号：US12446869

申请日：2007-11-21

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： Methods for evaluating battery safety under internal short-circuit conditions are improved to eliminate variations in evaluation results and accurately evaluate battery safety under internal short-circuit conditions. An internal short-circuit is caused in a battery by using an internal short-circuit causing method in which battery information obtained upon the occurrence of an internal short-circuit hardly changes with the structure of the battery. At this time, the battery information is detected to accurately evaluate the safety of the battery upon the internal short-circuit and identify the safety level.

摘要翻译： 改善在内部短路条件下评估电池安全性的方法，以消除评估结果的变化，并在内部短路条件下准确评估电池安全性。 通过使用在内部短路发生时获得的电池信息几乎不随电池结构而变化的内部短路引起方法在电池中引起内部短路。 此时，检测出电池信息，以便在内部短路时精确地评估电池的安全性并识别安全等级。

公开(公告)号：US08138747B2

公开(公告)日：2012-03-20

申请号：US12027111

申请日：2008-02-06

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

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

IPC分类号： G01N27/416

CPC分类号： H01M10/4285

摘要： The present invention relates to an internal short circuit evaluation method for a battery including an electrode group including a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, and an outer jacket covering the electrode group, the method including the steps of: (I) processing the electrode group to a predetermined position of the electrode group, from the outside of the electrode group toward the inside thereof; and (II) causing a short circuit between a portion of the electrode plate and a portion of the negative electrode plate of the electrode group that are located inside from the predetermined position, and measuring battery information that is changed by the short circuit, and an evaluation apparatus used for the above-described method.

摘要翻译： 本发明涉及一种电池的内部短路评估方法，该电池包括具有正电极板，负极板和设置在正极板和负极板之间的隔板的电极组，以及覆盖电极的外护套 该方法包括以下步骤：（I）从电极组的外部向其内部处理电极组到电极组的预定位置; 和（II）在所述电极板的一部分与所述电极组的所述负极板的与所述预定位置对应的部分之间产生短路，并且测量由所述短路而变化的电池信息，以及 用于上述方法的评估装置。

公开(公告)号：US20110068800A1

公开(公告)日：2011-03-24

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： G01N27/416 ,  G01R31/00

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：US20080143337A1

公开(公告)日：2008-06-19

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： H01M10/48 ,  H01M2/00

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。