公开(公告)号：US08883348B2

公开(公告)日：2014-11-11

申请号：US11916603

申请日：2006-07-21

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

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

IPC: H01M4/00 ,  H01M4/13 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/70

CPC classification number: H01M4/70 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

Abstract: 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.

Abstract translation: 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：US08323812B2

公开(公告)日：2012-12-04

申请号：US12445374

申请日：2007-10-12

Applicant: Hajime Nishino ,  Yasushi Hirakawa ,  Koshi Takamura

Inventor： Hajime Nishino ,  Yasushi Hirakawa ,  Koshi Takamura

IPC: H01M2/12

CPC classification number: H01M2/105 ,  H01M2/12 ,  H01M2/204 ,  H01M2/30 ,  H01M2/34 ,  H01M2200/00

Abstract: It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 1C for permitting the flow of gas released from the battery is provided and the gas is exhausted to the outside after reducing the temperature thereof in the exhaust duct 1C. A flow passage area of the exhaust duct 1C is in the range of not less than 0.5 mm2 and not more than 15 mm2 per 1 Ah of the battery capacity. The exhaust duct 1C is provided with a gas cooling portion 1L and a spark trapping portion 1M.

Abstract translation: 目的在于提供一种能够通过防止电池组中包含的电池进入燃烧状态而能够确保安全性的电池组，即使电池释放处于异常状态的高温气体。 提供了用于允许从电池释放的气体流动的排气管道1C，并且在降低排气管道1C中的温度之后将气体排出到外部。 排气管1C的流路面积在电池容量的1 Ah的不小于0.5mm 2且不大于15mm 2的范围内。 排气管1C设置有气体冷却部1L和火花捕集部1M。

公开(公告)号：US08179650B2

公开(公告)日：2012-05-15

申请号：US12119237

申请日：2008-05-12

Applicant: Kozo Watanabe ,  Hajime Nishino ,  Kazuya Maegawa

Inventor： Kozo Watanabe ,  Hajime Nishino ,  Kazuya Maegawa

IPC: H02H9/02

CPC classification number: H01M10/482 ,  H01M10/0525 ,  Y10T307/735

Abstract: A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit.

Abstract translation: 电源装置包括：多个电池; 切换部，切换所述多个电池之间的连接; 短路电池检测部，如果在所述多个电池中的任一个中产生内部短路，则检测该内部短路电池; 以及切换控制部，如果短路电池检测部检测到内部短路电池，则允许切换部以这样的方式切换多个电池之间的连接，使得该内部短路电池和至少一个 的其他电池串联连接，从而形成闭合电路。

公开(公告)号：US08163409B2

公开(公告)日：2012-04-24

申请号：US11798630

申请日：2007-05-15

Applicant: Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

Inventor： Masato Fujikawa ,  Shinji Kasamatsu ,  Hajime Nishino ,  Mikinari Shimada

IPC: H01M2/00 ,  H01M10/48

CPC classification number: H01M10/4235 ,  G01R31/025 ,  G01R31/3641 ,  H01M10/052 ,  H01M10/4285 ,  H01M10/48 ,  H01M10/488 ,  Y10T29/49108

Abstract: 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.

Abstract translation: 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：US08111035B2

公开(公告)日：2012-02-07

申请号：US11946362

申请日：2007-11-28

Applicant: Hajime Nishino ,  Jun Asakura ,  Yoshio Nakatani

Inventor： Hajime Nishino ,  Jun Asakura ,  Yoshio Nakatani

IPC: H02J7/00 ,  H02J1/12 ,  H01M2/12

CPC classification number: H02J7/0075 ,  H02J7/0031 ,  H02J7/0091 ,  Y10T307/516 ,  Y10T307/615 ,  Y10T307/625

Abstract: A charging system is provided with a secondary battery, a charging current supplier for supplying a charging current to the secondary battery, an internal resistance detector for detecting the resistance value of the internal resistance of the secondary battery, and a charge controller for increasing the charging current to be supplied to the secondary battery by the charging current supplier as the resistance value detected by the internal resistance detector decreases.

Abstract translation: 充电系统具有二次电池，用于向二次电池供给充电电流的充电电流供给器，用于检测二次电池的内部电阻的电阻值的内部电阻检测器，以及用于增加充电的充电控制器 作为由内部电阻检测器检测出的电阻值，由充电电流供给器供给二次电池的电流降低。

公开(公告)号：US20110177366A1

公开(公告)日：2011-07-21

申请号：US13054748

申请日：2009-11-19

Applicant: Akira Nagasaki ,  Norio Marubayashi ,  Hajime Nishino ,  Yasushi Hirakawa

Inventor： Akira Nagasaki ,  Norio Marubayashi ,  Hajime Nishino ,  Yasushi Hirakawa

IPC: H01M10/50 ,  H01M2/12

CPC classification number: H01M2/1022 ,  H01M2/1094 ,  H01M2/12 ,  H01M2/1258 ,  H01M10/613 ,  H01M10/623 ,  H01M10/6554 ,  H01M10/659 ,  H01M10/6595 ,  H01M2200/00

Abstract: A battery pack of the present invention includes: a battery assembly including a plurality of batteries having a sealed portion, the plurality of batteries being connected to each other; a terminal portion electrically connected to the battery assembly and outputting electric power; and a composite layer structure including a heat-absorbing layer and a heat-conductive layer layered on the heat-absorbing layer, the composite layer structure being arranged at least at a part of a periphery of the battery assembly. The heat-absorbing layer has a specific heat of 1,000 J/kg·° C. or more. The heat-conductive layer has a heat conductivity of 10 W/m·K or more. This configuration allows for a small, light, and highly safe battery pack that is free from battery pack damage even when a battery in the battery pack has trouble and emits a high-temperature inflammable gas to expose the inside of the battery pack to a high-temperature environment.

Abstract translation: 本发明的电池组包括：电池组件，其包括具有密封部分的多个电池，所述多个电池彼此连接; 电连接到电池组件并输出电力的端子部分; 以及复合层结构，其包括层叠在所述吸热层上的吸热层和导热层，所述复合层结构至少布置在所述电池组件的外围的一部分。 吸热层的比热为1,000J / kg·℃以上。 导热层的导热率为10W / m·K以上。 该配置允许小型，轻便和高度安全的电池组，即使电池组中的电池发生故障并且发出高温易燃气体以将电池组内部暴露于高电平，电池组也不会损坏电池组 温度环境。

公开(公告)号：US20100188048A1

公开(公告)日：2010-07-29

申请号：US12666137

申请日：2008-05-21

Applicant: Hajime Nishino ,  Kohei Suzuki ,  Shigeo Ikuta ,  Akiko Fujino

Inventor： Hajime Nishino ,  Kohei Suzuki ,  Shigeo Ikuta ,  Akiko Fujino

IPC: H02J7/04 ,  H01M4/58 ,  H01M6/42

CPC classification number: H01M10/052 ,  H01M2/166 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/4235 ,  H01M10/441 ,  H02J7/0016 ,  H02J7/0026 ,  H02J7/045

Abstract: A nonaqueous secondary battery includes a negative electrode plate 303 containing a negative electrode active material 324 capable of reversely inserting and extracting lithium, a positive electrode plate 301 containing lithium as a positive electrode active material 322, an electrolyte, a porous protective membrane 325 provided between the negative electrode plate 303 and the positive electrode plate 301 and permeable to lithium ions while having heat resistance, and a concave portion 352 in which growth of deposited metal, which is formed according to a set voltage Vs, is controlled in such a manner that the deposited metal is bridged between the negative electrode plate 303 and the positive electrode plate 301 when the set voltage Vs is applied between the negative electrode plate 303 and the positive electrode plate 301.

Abstract translation: 非水二次电池包括负极板303，其包含能够反向插入和提取锂的负极活性物质324，含有锂作为正极活性物质322的正极板301，电解质，多孔保护膜325， 负极板303和正极板301，并且具有耐热性的锂离子可渗透，并且其中根据设定电压Vs形成的沉积金属的生长的凹部352被以如下方式控制： 当在负极板303和正极板301之间施加设定电压Vs时，将沉积的金属桥接在负极板303和正极板301之间。

公开(公告)号：US07754375B2

公开(公告)日：2010-07-13

申请号：US11363189

申请日：2006-02-28

Applicant: Masato Fujikawa ,  Hajime Nishino ,  Mikinari Shimada

Inventor： Masato Fujikawa ,  Hajime Nishino ,  Mikinari Shimada

IPC: H01M2/14

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

Abstract: 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.

Abstract translation: 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：US20100119932A1

公开(公告)日：2010-05-13

申请号：US12596579

申请日：2008-04-10

Applicant: Kensuke Nakura ,  Hajime Nishino ,  Miyuki Nakai ,  Mikinari Shimada

Inventor： Kensuke Nakura ,  Hajime Nishino ,  Miyuki Nakai ,  Mikinari Shimada

IPC: H01M2/00

CPC classification number: H01M10/0525 ,  H01M2/1673 ,  H01M2/348 ,  H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M4/667 ,  H01M10/4235 ,  H01M2004/021 ,  Y02T10/7011

Abstract: An object of the present invention is to provide a high-energy density nonaqueous electrolyte secondary battery that controls the rise in temperature during short circuiting. Used is a nonaqueous electrolyte secondary battery 1, including a battery case 2, and a positive electrode plate 5 having a positive electrode current collector and a positive electrode mixture layer containing a cathode material capable of absorbing and desorbing lithium, a negative electrode plate 6 having a negative electrode current collector and a negative electrode mixture layer containing an anode material capable of absorbing and desorbing lithium, a separator 7 held between the positive and negative electrode plates, and a nonaqueous electrolyte that are enclosed in the battery case, wherein at least one of the positive electrode plate 5 and the negative electrode plate 6 has an electrode plate resistance, as determined in the charged state in the thickness direction when pressurized at 50 kg/cm2, of 0.4 Ω·cm2 or more.

Abstract translation: 本发明的目的是提供一种控制短路时的温度上升的高能密度非水电解质二次电池。 使用的是具有电池壳体2的非水电解质二次电池1和具有正极集电体的正极板5和含有能够吸收和解吸锂的正极材料的正极合剂层，负极板6具有 含有能够吸收和解吸锂的负极材料的负极集电体和负极混合物层，保持在正极板和负极板之间的隔板7和封入电池壳体中的非水电解质，其中至少一个 正极板5和负极板6的电极板电阻在50kg / cm 2的加压下，在厚度方向的充电状态下测定为0.4Ω·cm 2·cm 2以上。

公开(公告)号：US20100047673A1

公开(公告)日：2010-02-25

申请号：US12443801

申请日：2007-09-18

Applicant: Yasushi Hirakawa ,  Hajime Nishino ,  Koshi Takamura

Inventor： Yasushi Hirakawa ,  Hajime Nishino ,  Koshi Takamura

IPC: H01M2/12 ,  H01M10/34

CPC classification number: H01M2/1061 ,  H01M2/105 ,  H01M2/1072 ,  H01M2/1094 ,  H01M2/12 ,  H01M2/1252 ,  H01M2/127 ,  H01M2/16 ,  H01M10/0525 ,  H01M10/52 ,  H01M2200/10 ,  H01M2200/20

Abstract: A battery pack includes a battery having a risk of releasing a gas under abnormal conditions, a case that accommodates the battery, and an oxygen reducing portion that reduces an amount of oxygen within the case.

Abstract translation: 电池组包括在异常状态下具有释放气体的电池的电池，容纳电池的情况以及减少壳体内的氧气量的氧还原部分。