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    • 11. 发明授权
    • Nonaqueous lithium secondary battery
    • 非水锂二次电池
    • US08338033B2
    • 2012-12-25
    • US12850792
    • 2010-08-05
    • Masao ShimizuYoshiaki Kumashiro
    • Masao ShimizuYoshiaki Kumashiro
    • H01M4/58
    • H01M4/133H01M2/1646H01M4/1393H01M4/505H01M4/62H01M10/0525
    • A nonaqueous lithium secondary battery includes a positive electrode and a negative electrode capable of intercalating and releasing lithium ions and a separator. The negative electrode includes a collector and a negative electrode mixture layer formed on the collector. The negative electrode mixture layer includes at least a negative electrode active material and a binder. Nonconductive particles are buried in a top layer of the negative electrode mixture layer. The nonconductive particles and the negative electrode active material exist as a mixture in the top layer with a depth ranging from 1 to 20 μm. A volume ratio of nonconductive particles having a diameter equal to or less than 20 μm to a total volume of all the nonconductive particles and the negative electrode active material existing in the top layer of the negative electrode mixture layer ranges from 20 to 80%.
    • 非水锂二次电池包括能够插入和释放锂离子的正极和负极和隔膜。 负极包括在集电体上形成的集电体和负极混合层。 负极合剂层至少包含负极活性物质和粘合剂。 非导电颗粒被埋在负极混合物层的顶层中。 非导电粒子和负极活性物质以1〜20μm的深度作为上层的混合物存在。 直径等于或小于20μm的非导电颗粒与存在于负极混合物层顶层中的所有非导电颗粒和负极活性材料的总体积的体积比为20至80%。
    • 13. 发明申请
    • NONAQUEOUS LITHIUM SECONDARY BATTERY
    • 非标锂二次电池
    • US20110033754A1
    • 2011-02-10
    • US12850792
    • 2010-08-05
    • Masao SHIMIZUYoshiaki Kumashiro
    • Masao SHIMIZUYoshiaki Kumashiro
    • H01M4/58
    • H01M4/133H01M2/1646H01M4/1393H01M4/505H01M4/62H01M10/0525
    • A nonaqueous lithium secondary battery includes a positive electrode and a negative electrode capable of intercalating and releasing lithium ions and a separator. The negative electrode includes a collector and a negative electrode mixture layer formed on the collector. The negative electrode mixture layer includes at least a negative electrode active material and a binder. Nonconductive particles are buried in a top layer of the negative electrode mixture layer. The nonconductive particles and the negative electrode active material exist as a mixture in the top layer with a depth ranging from 1 to 20 μm. A volume ratio of nonconductive particles having a diameter equal to or less than 20 μm to a total volume of all the nonconductive particles and the negative electrode active material existing in the top layer of the negative electrode mixture layer ranges from 20 to 80%.
    • 非水锂二次电池包括能够插入和释放锂离子的正极和负极和隔膜。 负极包括在集电体上形成的集电体和负极混合层。 负极合剂层至少包含负极活性物质和粘合剂。 非导电颗粒被埋在负极混合物层的顶层中。 非导电粒子和负极活性物质以1〜20μm的深度作为上层的混合物存在。 直径等于或小于20μm的非导电颗粒与存在于负极混合物层顶层中的所有非导电颗粒和负极活性材料的总体积的体积比为20至80%。
    • 16. 发明申请
    • Charging/Discharging Control Unit for Lithium Secondary Battery
    • 锂二次电池充电/放电控制单元
    • US20100072949A1
    • 2010-03-25
    • US12541612
    • 2009-08-14
    • Yoshiaki KumashiroYoshimi YanaiEiji Seki
    • Yoshiaki KumashiroYoshimi YanaiEiji Seki
    • H02J7/04
    • H02J7/0086
    • In a charging/discharging unit provided with: a lithium secondary battery, a voltage detecting sensor for detecting a voltage and a current detecting sensor; the charging/discharging control unit is further provided with a controller, and a discharging element for performing a constant voltage discharging operation of 3 V. A voltage, V0, of the battery when a discharging operation is terminated (t=0) is measured by the voltage detecting sensor. If V0≦3.6 V, within a rest time during which the battery is not charged/discharged until a next charging operation, a voltage, V1, of the battery when a time, t1, has elapsed is measured by the voltage detecting sensor. If this voltage charge is in a range of V1−V0≧0.2 V, then the constant voltage discharging operation of 3 V is carried out for a time duration longer than or equal to 1 hour.
    • 在具有锂二次电池,用于检测电压的电压检测传感器和电流检测传感器的充电/放电单元中, 充放电控制单元还设置有控制器和用于执行3V的恒定电压放电操作的放电元件。当放电操作终止时,电池的电压V0(t = 0)通过 电压检测传感器。 如果V0≦̸ 3.6V,则在电池在下一次充电操作之前未被充电/放电的休息时间内,当经过时间t1时,电池的电压V1由电压检测传感器测量。 如果该电压在V1-V0≥0.2V的范围内,则3V的恒定电压放电动作持续时间大于等于1小时。