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公开(公告)号：US20090208820A1
公开(公告)日：2009-08-20
申请号：US12293938
申请日：2007-03-29
IPC分类号： H01M2/12
CPC分类号： H01M2/1235 , H01M2/34 , H01M10/052
摘要： To operate a safety mechanism normally even when an accident happens. For this object, an electrochemical element includes an exhaust valve that operates when an internal pressure in a casing 4 reaches a predetermined pressure to release gas occurring in the casing to the outside, and a perforated plate 2 having holes 5a and 5b, which is provided between an electrode group 3 and the exhaust valve. The area of the perforated plate 2 excluding the holes 5a and 5b is 20% or more and 50% or less of the area of the opening of the casing. The perforated plate 2 is adapted for electrically insulating the electrode group 3 from the sealing member 1.
摘要翻译： 即使发生事故，也可以正常运行安全机制。 为此目的，一种电化学元件包括排气阀，当外壳4中的内部压力达到预定压力以将外壳中产生的气体释放到外部时，排气阀和具有孔5a和5b的多孔板2 在电极组3和排气阀之间。 除了孔5a和5b之外的多孔板2的面积是壳体的开口面积的20％以上且50％以下。 多孔板2适于将电极组3与密封构件1电绝缘。
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公开(公告)号：US08129045B2
公开(公告)日：2012-03-06
申请号：US12293938
申请日：2007-03-29
IPC分类号： H01M2/12
CPC分类号： H01M2/1235 , H01M2/34 , H01M10/052
摘要： To operate a safety mechanism normally even when an accident happens. For this object, an electrochemical element includes an exhaust valve that operates when an internal pressure in a casing 4 reaches a predetermined pressure to release gas occurring in the casing to the outside, and a perforated plate 2 having holes 5a and 5b, which is provided between an electrode group 3 and the exhaust valve. The area of the perforated plate 2 excluding the holes 5a and 5b is 20% or more and 50% or less of the area of the opening of the casing. The perforated plate 2 is adapted for electrically insulating the electrode group 3 from the sealing member 1.
摘要翻译： 即使发生事故，也可以正常运行安全机制。 为此目的，一种电化学元件包括排气阀，当外壳4中的内部压力达到预定压力以将外壳中产生的气体释放到外部时，排气阀和具有孔5a和5b的多孔板2 在电极组3和排气阀之间。 除了孔5a和5b之外的多孔板2的面积是壳体的开口面积的20％以上且50％以下。 多孔板2适于将电极组3与密封构件1电绝缘。
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公开(公告)号：US08471566B2
公开(公告)日：2013-06-25
申请号：US12992011
申请日：2010-01-18
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。
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公开(公告)号：US08017262B2
公开(公告)日：2011-09-13
申请号：US11339617
申请日：2006-01-26
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。
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公开(公告)号：US07687202B2
公开(公告)日：2010-03-30
申请号：US11315189
申请日：2005-12-23
CPC分类号： H01M4/131 , H01M2/1653 , H01M4/505 , H01M4/525 , H01M10/4235
摘要： A non-aqueous electrolyte secondary battery including: a positive electrode having a positive electrode material mixture containing a composite lithium oxide; a negative electrode; a polyolefin separator; a non-aqueous electrolyte; and a heat-resistant insulating layer interposed between the positive and negative electrodes. The positive electrode active material mixture has an estimated heat generation rate at 200° C. of not greater than 50 W/kg. The estimated heat generation rate is determined by obtaining a relation between absolute temperature T and heat generation rate V of the positive electrode material mixture using an accelerating rate calorimeter; plotting a relation between the inverse of absolute temperature T and the logarithm of heat generation rate V according to the Arrhenius law; obtaining a straight line fitted to the plotted points in a heat generation temperature range of T
摘要翻译： 一种非水电解质二次电池，包括：具有含有复合氧化锂的正极合剂混合物的正极; 负极; 聚烯烃分离器; 非水电解质; 以及插入在正极和负极之间的耐热绝缘层。 正极活性物质混合物在200℃下的估计发热率不大于50W / kg。 通过使用加速率量热计获得正极材料混合物的绝对温度T和发热量V之间的关系来确定估计发热速率; 根据Arrhenius定律绘制绝对温度T的倒数与发热量V的对数之间的关系; 在T <200℃的发热温度范围内获得拟合到绘图点的直线; 并将直线外推至200℃的温度。
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6.发明申请Battery, battery pack and method of manufacturing connection terminal used therein 有权电池，电池组及制造连接端子的制造方法公开(公告)号：US20090226803A1
公开(公告)日：2009-09-10
申请号：US12380702
申请日：2009-03-03
CPC分类号： H01G9/155 , H01G9/12 , H01M10/0525 , H01M2200/00 , Y02E60/13 , Y10T29/49222
摘要： A battery includes an electrode group, a case, a sealing member, and a mesh portion. The electrode group includes a positive electrode, a negative electrode opposing the positive electrode, an electrolyte interposed between the positive electrode and the negative electrode. The case has an opening and contains the electrode group. The sealing member closes the opening of the case. The mesh portion is provided so as to face an exhaust hole formed in at least one of the case and the sealing member.
摘要翻译： 电池包括电极组，壳体，密封构件和网状部分。 电极组包括正极，与正极相对的负极，插入在正极和负极之间的电解质。 壳体具有开口并且包含电极组。 密封构件封闭壳体的开口。 网状部分设置成面对形成在壳体和密封构件中的至少一个中的排气孔。
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公开(公告)号：US20090104529A1
公开(公告)日：2009-04-23
申请号：US11916603
申请日：2006-07-21
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。
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8.发明申请公开(公告)号：US20080186030A1
公开(公告)日：2008-08-07
申请号：US12027126
申请日：2008-02-06
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。
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公开(公告)号：US07336081B2
公开(公告)日：2008-02-26
申请号：US11098378
申请日：2005-04-05
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。
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公开(公告)号：US08883348B2
公开(公告)日：2014-11-11
申请号：US11916603
申请日：2006-07-21
IPC分类号： H01M4/00 , H01M4/13 , H01M4/58 , H01M10/0525 , H01M4/70
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。
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