-
1.发明授权Nonaqueous electrolyte secondary battery with a polyolefin microporous membrane separator 失效具有聚烯烃微孔膜分离器的非水电解质二次电池公开(公告)号：US06713217B2
公开(公告)日：2004-03-30
申请号：US08983281
申请日：1998-01-08
申请人： Takafumi Oura , Masaki Kitagawa , Hajime Nishino , Hizuru Koshina
发明人： Takafumi Oura , Masaki Kitagawa , Hajime Nishino , Hizuru Koshina
IPC分类号： H01M216
CPC分类号： H01M4/587 , H01M2/1653 , H01M2/1686 , H01M4/131 , H01M4/133 , H01M4/505 , H01M4/525 , H01M6/10 , H01M10/05 , H01M10/0525 , H01M10/0569 , H01M2300/004
摘要： The present invention relates to a nonaqueous electrolyte secondary battery, and more particularly to its separator, and it is an object thereof to prevent electrolyte leakage accident due to elevation of cell internal pressure even if the cell is exposed to high temperature without sacrificing the cell capacity. To achieve the object, by using the polyolefin group separator large in endothermic calorie per unit area by the heat of fusion in a temperature range of 70 to 150° C., and selecting appropriate graphite powder for negative electrode and organic solvent in nonaqueous electrolyte, the electrolyte leakage accident can be successfully eliminated by suppressing the reaction between the cell active substance and organic solvent, thereby suppressing elevation of cell internal pressure.
摘要翻译： 非水电解质二次电池技术领域本发明涉及一种非水电解质二次电池，特别涉及其隔膜，其目的在于，即使电池暴露于高温而不牺牲电池容量，也可以防止由于电池内压升高引起的电解液泄漏事故 为了达到上述目的，通过在70〜150℃的温度范围内，通过熔融热使单位面积吸热量大的聚烯烃类隔板，在非水电解液中选择适当的负极用石墨粉末和有机溶剂 通过抑制电池活性物质与有机溶剂的反应，可以成功地消除电解液泄漏事故，从而抑制电池内压的升高。
-
2.发明授权公开(公告)号：US06455199B1
公开(公告)日：2002-09-24
申请号：US09214825
申请日：1999-02-22
申请人： Masaki Kitagawa , Yoshihiro Kashihara , Hizuru Koshina , Toyoji Sugimoto , Kunio Tsuruta , Shuji Ito , Hajime Nishino , Kojiro Ishikawa , Hisanori Sugimoto , Kaoru Tsukamoto
发明人： Masaki Kitagawa , Yoshihiro Kashihara , Hizuru Koshina , Toyoji Sugimoto , Kunio Tsuruta , Shuji Ito , Hajime Nishino , Kojiro Ishikawa , Hisanori Sugimoto , Kaoru Tsukamoto
IPC分类号： C01B3104
CPC分类号： H01M4/587 , H01M4/133 , H01M10/0525 , H01M2004/021 , Y10T29/49108
摘要： Graphite powder for a negative electrode in prior arts, which allows lithium ions to repeat intercalation and deintercalation reversibly by charge and discharge, has failed to attain a specific capacity close to the theoretical capacity of 372 mAh per 1 g. Also, there was a problem in storage property at a high temperature when it is attempted to improve the high rate charge and discharge characteristics. An object of the present invention is to solve these problems. In the process of pulverizing flaky graphite particles of which plane interval (d002) of (002) plane is 3.350 to 3.360 angstroms, and crystallite size (Lc) in the C-axis direction is at least 1000 angstroms or more, the graphite particles are chamfered into disk- or tablet-like form, which are then sifted, so as to obtain a graphite powder, of which mean particle size is defined within the range of 10 to 30 microns, mean thickness of thinnest portion is defined to be 3 to 9 microns, and X-ray diffraction peak intensity ratio of (110)/(004) by a wide angle X-ray diffraction method is defined to be 0.015 or more. By using this powder, the conventional problems are solved in a favorable balance, and, while achieving high energy density, the high rate discharge performance and reliability when left at a high temperature can be enhanced.
摘要翻译： 现有技术中的允许锂离子通过充电和放电可逆地重复嵌入和脱嵌的现有技术的石墨粉未能达到接近每1g的372mAh的理论容量的比容量。 此外，当尝试提高高速率充放电特性时，在高温下的储存特性存在问题。 本发明的目的是解决这些问题。 在（002）面的平面间隔（d002）为3.350〜3.360埃的片状石墨粒子粉碎的过程中，C轴方向的微晶尺寸（Lc）为1000以上，石墨粒子为 倒角成片状或片状，然后将其筛分，以获得石墨粉末，其平均粒度定义在10至30微米的范围内，最薄部分的平均厚度定义为3至 通过广角X射线衍射法将（110）/（004）的X射线衍射峰强度比定义为0.015以上。 通过使用这种粉末，常规问题得到平衡的解决，并且在实现高能量密度的同时，可以提高高放电性能和高温时的可靠性。
-
公开(公告)号：US06627352B1
公开(公告)日：2003-09-30
申请号：US09051933
申请日：1998-04-22
IPC分类号： H01M458
CPC分类号： H01M4/583 , H01M4/133 , H01M4/505 , H01M4/525 , H01M10/0525
摘要： The present invention relates to a lithium ion secondary battery using as the negative active material thereof a carbon material that enables the absorption and release of lithium ions and has volume resistivity not exceeding 5.0×10−3 ohmcm, thereby preventing battery temperatures from increasing abruptly due to low volume resistivity of the carbon material even when short-circuiting takes place inside of the battery.
摘要翻译： 本发明涉及一种锂离子二次电池，其使用能够吸收和释放锂离子并且体积电阻率不超过5.0×10 -3 ohm cm的碳材料作为其负极活性材料，从而防止电池温度突然增加 由于碳材料的体积电阻率低，即使在电池内发生短路时也是如此。
-
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。
-
公开(公告)号：US20120100421A1
公开(公告)日：2012-04-26
申请号：US13379987
申请日：2010-10-15
申请人： Keizo Oda , Masahiko Kubo , Hajime Nishino , Akitoshi Hiramatsu , Takayuki Oota
发明人： Keizo Oda , Masahiko Kubo , Hajime Nishino , Akitoshi Hiramatsu , Takayuki Oota
IPC分类号： H01M2/08
CPC分类号： H01M2/1247 , H01M2/0242
摘要： Disclosed is a battery 10 including: an electrode group including a positive electrode, a negative electrode, and a separator; an electrolyte; and a battery container accommodating the electrode group and the electrolyte. The battery container includes an accommodating portion 16 having an opening, and a lid sealing the opening of the accommodating portion 16. The battery container includes a liquid-retaining portion 16a retaining the electrolyte therein below the liquid surface of the electrolyte, and a gas-retaining portion 16b retaining gas therein above the liquid surface of the electrolyte. The liquid-retaining portion 16a of the side portion of the battery container is thinner than the gas-retaining portion 16b of the battery container. This suppresses scattering of fragments etc. in the event of rupture of a secondary battery due to an increase in the internal pressure. The safety of the secondary battery is thus increased.
摘要翻译： 公开了一种电池10，其包括：包括正极，负极和隔膜的电极组; 电解液 以及容纳电极组和电解质的电池容器。 电池容器包括具有开口的容纳部分16和密封容纳部分16的开口的盖子。电池容器包括将电解液保持在电解液的液体表面之下的液体保持部分16a， 保持部分16b将气体保留在电解液的液体表面之上。 电池容器的侧部的液体保持部分16a比电池容器的气体保持部分16b薄。 由于内部压力的增加，二次电池的破裂的情况下，能够抑制碎片等的散射。 因此，二次电池的安全性增加。
-
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。
-
7.发明申请公开(公告)号：US20110000801A1
公开(公告)日：2011-01-06
申请号：US12866785
申请日：2009-02-27
IPC分类号： B65D71/00
CPC分类号： A62C3/07 , A62C3/16 , A62C35/02 , B60L3/0046 , B60L3/0053 , H01M10/613 , H01M2200/00 , Y02T90/34
摘要： An electric power equipment has a main body case, a plurality of power supply elements provided in the main body case, and a fire-extinguishing agent discharge space disposed facing the plurality of power supply elements. The fire-extinguishing agent discharge space includes fire-extinguishing agent spray space having a plurality of fire-extinguishing agent spray holes for spraying a fire-extinguishing agent toward the plurality of power supply elements, and a fire-extinguishing agent supply space coupled to the fire-extinguishing agent spray space via a plurality of fire-extinguishing supply holes. A fire-extinguishing agent tank is coupled to the fire-extinguishing agent supply space via a shutoff valve.
摘要翻译： 电力设备具有主体壳体，设置在主体壳体中的多个电源元件和面向多个电源元件设置的灭火剂放电空间。 灭火剂排放空间包括具有多个用于向多个电源元件喷射灭火剂的灭火剂喷射孔的灭火剂喷射空间，以及与该灭火剂供给空间连接的灭火剂供给空间 灭火剂通过多个灭火剂供应孔喷射空间。 灭火剂罐通过截止阀与灭火剂供应空间相连。
-
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。
-
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。
-
10.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。
-
-
-
-
-
-
-
-
-
搜索结果
63 条记录 (耗时 0.023 秒)
