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    Lithium ion secondary battery
    2.
    发明授权
    Lithium ion secondary battery 有权

    公开(公告)号：US10374219B2

    公开(公告)日：2019-08-06

    申请号：US14119201

    申请日：2012-04-13

    申请人： Ryuichi Kasahara ,  Jiro Iriyama ,  Shin Serizawa ,  Hiroo Takahashi ,  Tatsuji Numata

    发明人： Ryuichi Kasahara ,  Jiro Iriyama ,  Shin Serizawa ,  Hiroo Takahashi ,  Tatsuji Numata

    IPC分类号： H01M4/13 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/134 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0585

    摘要： The object of an exemplary embodiment of the invention is to provide a lithium ion secondary battery having an excellent charge and discharge cycle property. An exemplary embodiment of the invention is a lithium ion secondary battery, comprising a battery assembly in which a positive electrode and a negative electrode are stacked through a separator and a package in which the battery assembly and an electrolyte are placed; wherein the negative electrode comprises a negative electrode collector which is composed of a metal and a negative electrode active material layer which is formed on the negative electrode collector and which comprises a negative electrode active material and a binder; wherein the negative electrode collector and the negative electrode active material layer have a crack which is formed so as to be communicated with each of them; and wherein the crack reaches an outer peripheral edge from an inside of the negative electrode.

    LITHIUM ION SECONDARY BATTERY
    3.
    发明申请
    LITHIUM ION SECONDARY BATTERY 审中-公开
    锂离子二次电池

    公开(公告)号：US20140127557A1

    公开(公告)日：2014-05-08

    申请号：US14119201

    申请日：2012-04-13

    申请人： Ryuichi Kasahara ,  Jiro Iriyama ,  Shin Serizawa ,  Hiroo Takahashi ,  Tatsuji Numata

    发明人： Ryuichi Kasahara ,  Jiro Iriyama ,  Shin Serizawa ,  Hiroo Takahashi ,  Tatsuji Numata

    IPC分类号： H01M4/13 ,  H01M4/04 ,  H01M4/1395

    CPC分类号： H01M4/13 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0585 ,  Y02T10/7011

    摘要： The object of an exemplary embodiment of the invention is to provide a lithium ion secondary battery having an excellent charge and discharge cycle property. An exemplary embodiment of the invention is a lithium ion secondary battery, comprising a battery assembly in which a positive electrode and a negative electrode are stacked through a separator and a package in which the battery assembly and an electrolyte are placed; wherein the negative electrode comprises a negative electrode collector which is composed of a metal and a negative electrode active material layer which is formed on the negative electrode collector and which comprises a negative electrode active material and a binder; wherein the negative electrode collector and the negative electrode active material layer have a crack which is formed so as to be communicated with each of them; and wherein the crack reaches an outer peripheral edge from an inside of the negative electrode.

    摘要翻译： 本发明的示例性实施方案的目的是提供具有优异的充放电循环特性的锂离子二次电池。 本发明的一个示例性实施例是一种锂离子二次电池，其包括：电池组件，其中正电极和负电极通过隔板堆叠;以及封装，其中放置电池组和电解质; 其特征在于，所述负极包括负极集电体，所述负极集电体由金属和负极活性物质层构成，所述负极活性物质层形成在所述负极集电体上并且包含负极活性物质和粘合剂; 其特征在于，所述负极集电体和所述负极活性物质层具有形成为与所述负极活性物质层连通的裂纹， 并且其中所述裂纹从所述负极的内部到达外周边缘。

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    6.
    发明申请
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    非电解电解质二次电池

    公开(公告)号：US20130101899A1

    公开(公告)日：2013-04-25

    申请号：US13806020

    申请日：2011-06-06

    申请人： Tetsuya Kajita ,  Hiroo Takahashi ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    发明人： Tetsuya Kajita ,  Hiroo Takahashi ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    IPC分类号： H01M4/485 ,  H01M10/04 ,  H01M4/525

    CPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/525 ,  H01M10/04 ,  Y10T29/49108

    摘要： There is provided a nonaqueous electrolyte secondary battery having high capacity in which the reduction in the capacity of the battery due to the irreversible capacity in the first charge and discharge is suppressed using a high capacity positive electrode. The nonaqueous electrolyte secondary battery according to the exemplary embodiment includes a positive electrode and a negative electrode including at least one negative electrode active material selected from the group consisting of Si, a Si oxide and carbon, wherein the positive electrode includes a positive electrode active material including an oxide capable of absorbing and releasing lithium and a transition metal oxide, the transition metal oxide being represented by Li2MO2 (wherein M is at least one of Cu and Ni) and including a square-planar coordination MO4 structure, the square-planar coordination MO4 structure forming a one-dimensional chain which shares an edge formed by two opposing oxygen atoms, wherein the relation Z≦Y is satisfied provided that Y represents the first charge capacity of the negative electrode, and Z represents the first charge capacity of the positive electrode.

    摘要翻译： 提供了一种高容量的非水电解质二次电池，其中使用高容量正极抑制了由于第一次充放电中的不可逆容量引起的电池容量的降低。 本实施方式的非水电解质二次电池包括正极和负极，所述正极和负极具有选自由Si，Si氧化物和碳组成的组中的至少一种负极活性物质，其中所述正极包含正极活性物质 包括能够吸收和释放锂的氧化物和过渡金属氧化物，所述过渡金属氧化物由Li2MO2（其中M是Cu和Ni中的至少一种）表示，并且包括正方形协调MO4结构，所述正方形配位 形成共享由两个相对的氧原子形成的边缘的一维链的MO4结构，其中满足关系Z @ Y，其中Y表示负极的第一充电容量，Z表示正极的第一充电容量 电极。

    Lithium secondary battery and control system therefor, and method for detecting state of lithium secondary battery
    9.
    发明授权
    Lithium secondary battery and control system therefor, and method for detecting state of lithium secondary battery 有权
    锂二次电池及其控制系统，以及锂二次电池的状态检测方法

    公开(公告)号：US09018916B2

    公开(公告)日：2015-04-28

    申请号：US13811837

    申请日：2011-07-20

    申请人： Jiro Iriyama ,  Tetsuya Kajita ,  Daisuke Kawasaki ,  Ryuichi Kasahara ,  Tatsuji Numata

    发明人： Jiro Iriyama ,  Tetsuya Kajita ,  Daisuke Kawasaki ,  Ryuichi Kasahara ,  Tatsuji Numata

    IPC分类号： H02H3/24 ,  G01R31/36 ,  H01M4/485 ,  H01M10/44 ,  H01M10/48 ,  G06F17/15 ,  H02J7/00

    CPC分类号： H01M10/48 ,  G01R31/362 ,  G01R31/3648 ,  G06F17/15 ,  H01M4/485 ,  H01M10/44 ,  H02J7/00 ,  H02J7/007 ,  Y02E60/122 ,  Y02P70/54

    摘要： There is provided a control system for a lithium secondary battery that can quantitatively sense a deterioration state inherent in a lithium secondary battery using silicon oxide as a negative electrode active material, that is, the nonuniform reaction state of a negative electrode. A control system for a lithium secondary battery including a positive electrode, a negative electrode using silicon oxide as a negative electrode active material, and a lithium reference electrode having a reference potential with respect to the negative electrode includes measurement means for measuring a voltage V of the negative electrode with respect to the lithium reference electrode and a discharge capacity Q of the lithium secondary battery during discharge of the lithium secondary battery; generation means for generating a V-dQ/dV curve representing a relationship between dQ/dV, which is a proportion of an amount of change dQ in the discharge capacity Q to an amount of change dV in the voltage V, and the voltage V; calculation means for calculating an intensity ratio of two peaks appearing on the V-dQ/dV curve for two voltage values in the voltage V; and sensing means for sensing a state of the negative electrode utilizing the intensity ratio.

    摘要翻译： 提供了一种锂二次电池的控制系统，其可以使用氧化硅作为负极活性物质，即负极的不均匀的反应状态来定量地感测锂二次电池固有的劣化状态。 一种锂二次电池的控制系统，包括正电极，使用氧化硅作为负电极活性材料的负极和相对于负电极具有参考电位的锂参比电极，包括用于测量电压V的电压V的测量装置 相对于锂参考电极的负极和锂二次电池放电期间的锂二次电池的放电容量Q; 用于产生表示作为放电容量Q中的变化量dQ与电压V中的变化量dV的比例的dQ / dV与电压V之间的关系的V-dQ / dV曲线的生成装置; 用于计算在V-dQ / dV曲线上出现的两个电压在电压V中的两个电压值的强度比的计算装置; 以及感测装置，用于利用强度比来感测负极的状态。