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    • 4. 发明申请
    • LITHIUM SECONDARY BATTERY AND PRODUCTION METHOD OF THE SAME
    • 锂二次电池及其生产方法
    • US20090263721A1
    • 2009-10-22
    • US12388580
    • 2009-02-19
    • Hiroshi HarunaKazushige KohnoEiji SekiYoshiaki Kumashiro
    • Hiroshi HarunaKazushige KohnoEiji SekiYoshiaki Kumashiro
    • H01M4/58
    • H01M10/0525H01M10/0569H01M10/446H01M2300/004Y10T29/4911
    • To provide a lithium secondary battery which suppresses a decrease in the charge and discharge efficiency during a battery storage test and which is excellent in maintaining the battery capacity after the storage test. There are disclosed a nonaqueous lithium battery, comprising: a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions; a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and an electrolytic solution containing a lithium ion, wherein the surface of the negative electrode active material after initializing charging is coated with a compound derived from vinylene carbonate, and wherein a weight power density of the lithium battery is no less than 100 Wh/kg, and a method of producing a nonaqueous lithium battery comprising a step of sealing a positive electrode active material, a negative electrode active material, and a nonaqueous electrolytic solution using a sealed container, wherein a predetermined amount of vinylene carbonate is added into the nonaqueous electrolytic solution, and the initializing charging is carried out to form a coating on the surface of the negative electrode active material, the coating being derived from the vinylene carbonate.
    • 提供一种锂二次电池,其抑制电池存储试验期间的充放电效率的降低,并且在保存试验后保持电池容量优异。 公开了一种非水锂电池,其包括:正极活性物质,其包含能够插入和分离锂离子的含锂氧化物; 包含能够插入和分离锂离子的碳材料的负极活性材料; 以及含有锂离子的电解液,其中,初始化充电后的负极活性物质的表面涂布有碳酸亚乙烯酯衍生的化合物,其中锂电池的重量功率密度为100Wh / kg以上, 以及一种制造非水锂电池的方法,包括使用密封容器密封正极活性物质,负极活性物质和非水电解液的步骤,其中将预定量的碳酸亚乙烯酯加入到非水电解液 ,并进行初始化充电以在负极活性材料的表面上形成涂层,该涂层源自碳酸亚乙烯酯。
    • 5. 发明授权
    • Lithium secondary battery and production method of the same
    • 锂二次电池及其制作方法相同
    • US08192871B2
    • 2012-06-05
    • US12388580
    • 2009-02-19
    • Hiroshi HarunaKazushige KohnoEiji SekiYoshiaki Kumashiro
    • Hiroshi HarunaKazushige KohnoEiji SekiYoshiaki Kumashiro
    • H01M4/13
    • H01M10/0525H01M10/0569H01M10/446H01M2300/004Y10T29/4911
    • To provide a lithium secondary battery which suppresses a decrease in the charge and discharge efficiency during a battery storage test and which is excellent in maintaining the battery capacity after the storage test. There are disclosed a nonaqueous lithium battery, comprising: a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions; a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and an electrolytic solution containing a lithium ion, wherein the surface of the negative electrode active material after initializing charging is coated with a compound derived from vinylene carbonate, and wherein a weight power density of the lithium battery is no less than 100 Wh/kg, and a method of producing a nonaqueous lithium battery comprising a step of sealing a positive electrode active material, a negative electrode active material, and a nonaqueous electrolytic solution using a sealed container, wherein a predetermined amount of vinylene carbonate is added into the nonaqueous electrolytic solution, and the initializing charging is carried out to form a coating on the surface of the negative electrode active material, the coating being derived from the vinylene carbonate.
    • 提供一种锂二次电池,其抑制电池存储试验期间的充放电效率的降低,并且在保存试验后保持电池容量优异。 公开了一种非水锂电池,其包括:正极活性物质,其包含能够插入和分离锂离子的含锂氧化物; 包含能够插入和分离锂离子的碳材料的负极活性材料; 以及含有锂离子的电解液,其中,初始化充电后的负极活性物质的表面涂布有碳酸亚乙烯酯衍生的化合物,其中锂电池的重量功率密度为100Wh / kg以上, 以及一种制造非水锂电池的方法,包括使用密封容器密封正极活性物质,负极活性物质和非水电解液的步骤,其中将预定量的碳酸亚乙烯酯加入到非水电解液 ,并进行初始化充电以在负极活性材料的表面上形成涂层,该涂层源自碳酸亚乙烯酯。
    • 7. 发明授权
    • Charging/discharging control unit for lithium secondary battery
    • 锂二次电池充放电控制单元
    • US08421418B2
    • 2013-04-16
    • US12541612
    • 2009-08-14
    • Yoshiaki KumashiroYoshimi YanaiEiji Seki
    • Yoshiaki KumashiroYoshimi YanaiEiji Seki
    • H02J7/00
    • 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。