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    • 1. 发明授权
    • Nonaqueous electrolyte secondary battery with rolled electrode assembly
    • 具有卷绕电极组件的非水电解质二次电池
    • US08597829B2
    • 2013-12-03
    • US12702346
    • 2010-02-09
    • Atsushi KaidukaMasanori OgiYukihiro OkiMasato Iwanaga
    • Atsushi KaidukaMasanori OgiYukihiro OkiMasato Iwanaga
    • H01M2/02H01M6/10
    • H01M10/0431H01M2/022H01M2/1673H01M2/168Y10T29/49108Y10T29/49114
    • The nonaqueous electrolyte secondary battery includes a rolled electrode assembly 14E formed by rolling a positive electrode plate 11 and a negative electrode plate 12 with a separator 13 interposed therebetween, the separator 13 is fixed on the outermost periphery of the rolled electrode assembly 14E with an adhesive tape for fixing a roll end 30e, an exposed portion of a negative electrode substrate 12c without an active material mixture layer 12b is placed on an outermost periphery side of the negative electrode plate 12, a negative electrode tab 12a is connected to the negative electrode substrate 12c on an outermost periphery side, and the adhesive tape 30e is not overlapped with a roll end 11d of the positive electrode plate 11 and a roll end 12d of the negative electrode substrate 12c. Thus the battery is seldom broken even when charging and discharging are repeatedly provided at high voltage.
    • 非水电解质二次电池包括通过将隔板13插入其间的正极板11和负极板12进行轧制而形成的卷绕电极组件14E,隔板13用粘合剂固定在卷绕电极组件14E的最外周上 用于固定辊端30e的带,没有活性物质混合层12b的负电极基板12c的露出部分放置在负极板12的最外周侧,负电极接线片12a连接到负电极基板 12c,并且粘合带30e不与正极板11的辊端部11d和负极基板12c的辊端部12d重叠。 因此,即使在高电压下重复提供充电和放电时,电池也很少损坏。
    • 2. 发明申请
    • NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非电解电解质二次电池
    • US20100233525A1
    • 2010-09-16
    • US12702346
    • 2010-02-09
    • Atsushi KaidukaMasanori OgiYukihiro OkiMasato Iwanaga
    • Atsushi KaidukaMasanori OgiYukihiro OkiMasato Iwanaga
    • H01M2/02
    • H01M10/0431H01M2/022H01M2/1673H01M2/168Y10T29/49108Y10T29/49114
    • The nonaqueous electrolyte secondary battery includes a rolled electrode assembly 14E formed by rolling a positive electrode plate 11 and a negative electrode plate 12 with a separator 13 interposed therebetween, the separator 13 is fixed on the outermost periphery of the rolled electrode assembly 14E with an adhesive tape for fixing a roll end 30e, an exposed portion of a negative electrode substrate 12c without an active material mixture layer 12b is placed on an outermost periphery side of the negative electrode plate 12, a negative electrode tab 12a is connected to the negative electrode substrate 12c on an outermost periphery side, and the adhesive tape 30e is not overlapped with a roll end 11d of the positive electrode plate 11 and a roll end 12d of the negative electrode substrate 12c. Thus the battery is seldom broken even when charging and discharging are repeatedly provided at high voltage.
    • 非水电解质二次电池包括通过将隔板13插入其间的正极板11和负极板12进行轧制而形成的卷绕电极组件14E,隔板13用粘合剂固定在卷绕电极组件14E的最外周上 用于固定辊端30e的带,没有活性物质混合层12b的负电极基板12c的露出部分放置在负极板12的最外周侧,负电极接线片12a连接到负电极基板 12c,并且粘合带30e不与正极板11的辊端部11d和负极基板12c的辊端部12d重叠。 因此,即使在高电压下重复提供充电和放电时,电池也很少损坏。
    • 5. 发明授权
    • Nonaqueous electrolyte secondary battery, nonaqueous electrolyte, and charging method therefor
    • 非水电解质二次电池,非水电解质及其充电方法
    • US08026000B2
    • 2011-09-27
    • US11656486
    • 2007-01-23
    • Masato IwanagaYukihiro OkiKoji AbeKazuhiro Miyoshi
    • Masato IwanagaYukihiro OkiKoji AbeKazuhiro Miyoshi
    • H01M6/04
    • H01M10/0567H01M4/131H01M4/485H01M4/505H01M4/525H01M10/0569H01M2300/004
    • A nonaqueous electrolyte secondary battery of the invention has a positive electrode having a positive electrode active material, a negative electrode, and a nonaqueous electrolyte having electrolyte salt in a nonaqueous solvent. The electric potential of the positive electrode active material is 4.4 to 4.6 V relative to lithium, and the nonaqueous electrolyte contains a compound expressed by structural formula (I) below. The quantity of compound added is preferably 0.1% to 2% by mass. Also, the positive electrode active material preferably comprises a mixture of a lithium-cobalt composite oxide which is LiCoO2 containing at least both zirconium and magnesium and a lithium-manganese-nickel composite oxide that has a layer structure and contains at least both manganese and nickel. Thanks to such structure, a nonaqueous electrolyte secondary battery can be provided that is charged to charging termination potential of 4.4 to 4.6 V relative to lithium and that has enhanced overcharging safety.[Chemical Formula 1]
    • 本发明的非水电解质二次电池具有正极,具有正极活性物质,负极和非水电解质,在非水溶剂中具有电解质盐。 正极活性物质的电位相对于锂为4.4〜4.6V,非水电解质含有下述结构式(I)表示的化合物。 化合物的添加量优选为0.1质量%〜2质量%。 此外,正极活性物质优选包含锂 - 钴复合氧化物的混合物,其为至少含有锆和镁的两种LiCoO 2和具有层结构并且至少包含锰和镍两者的锂锰镍复合氧化物的混合物 。 由于这样的结构,可以提供非水电解质二次电池,其相对于锂充电至4.4至4.6V的充电终止电位,并且具有增强的过充电安全性。 [化学式1]
    • 6. 发明申请
    • Nonaqueous electrolyte secondary battery, nonaqueous electrolyte, and charging method therefor
    • 非水电解质二次电池,非水电解质及其充电方法
    • US20070172730A1
    • 2007-07-26
    • US11656486
    • 2007-01-23
    • Masato IwanagaYukihiro OkiKoji AbeKazuhiro Miyoshi
    • Masato IwanagaYukihiro OkiKoji AbeKazuhiro Miyoshi
    • H01M10/40H01M4/50H01M4/52
    • H01M10/0567H01M4/131H01M4/485H01M4/505H01M4/525H01M10/0569H01M2300/004
    • A nonaqueous electrolyte secondary battery of the invention has a positive electrode having a positive electrode active material, a negative electrode, and a nonaqueous electrolyte having electrolyte salt in a nonaqueous solvent. The electric potential of the positive electrode active material is 4.4 to 4.6 V relative to lithium, and the nonaqueous electrolyte contains a compound expressed by structural formula (I) below. The quantity of compound added is preferably 0.1% to 2% by mass. Also, the positive electrode active material preferably comprises a mixture of a lithium-cobalt composite oxide which is LiCoO2 containing at least both zirconium and magnesium and a lithium-manganese-nickel composite oxide that has a layer structure and contains at least both manganese and nickel. Thanks to such structure, a nonaqueous electrolyte secondary battery can be provided that is charged to charging termination potential of 4.4 to 4.6 V relative to lithium and that has enhanced overcharging safety.[Chemical Formula 1]
    • 本发明的非水电解质二次电池具有正极,具有正极活性物质,负极和非水电解质,在非水溶剂中具有电解质盐。 正极活性物质的电位相对于锂为4.4〜4.6V,非水电解质含有下述结构式(I)表示的化合物。 化合物的添加量优选为0.1质量%〜2质量%。 此外,正极活性物质优选含有至少含有锆和镁两者的LiCoO 2 2的锂 - 钴复合氧化物和具有层结构的锂 - 锰 - 镍复合氧化物的混合物 并且至少含有锰和镍。 由于这样的结构,可以提供非水电解质二次电池,其相对于锂充电至4.4至4.6V的充电终止电位,并且具有增强的过充电安全性。 [化学式1]
    • 8. 发明授权
    • High-voltage charge type nonaqueous electrolyte secondary cell
    • 高压充电型非水电解质二次电池
    • US08021787B2
    • 2011-09-20
    • US12302713
    • 2007-05-30
    • Masato IwanagaKentaro TakahashiYukihiro OkiYoshihiko IkedaAkira KinoshitaNobumichi Nishida
    • Masato IwanagaKentaro TakahashiYukihiro OkiYoshihiko IkedaAkira KinoshitaNobumichi Nishida
    • H01M4/58
    • H01M10/052H01M4/131H01M4/136H01M4/485H01M4/525H01M4/5825H01M10/0567H01M2004/021H01M2010/4292
    • The preservation performance of a nonaqueous electrolyte secondary cell charged to high potential is improved while the initial capacity and the cycle property of the cell are also improved. The nonaqueous electrolyte secondary cell includes: a positive electrode having lithium phosphate and a positive electrode active material containing lithium cobalt compound oxide and lithium manganese nickel compound oxide having a layer structure, the lithium cobalt compound oxide having at least zirconium and magnesium added in LiCoO2; a negative electrode having a negative electrode active material; and a nonaqueous electrolyte having a nonaqueous solvent and an electrolytic salt. The potential of the positive electrode is more than 4.3 V and 5.1 V or less based on lithium. The nonaqueous electrolyte contains vinylene carbonate as the nonaqueous solvent and, as the electrolytic salt, at least one of lithium bis(pentafluoroethane sulfonyl)imide and lithium bis(trifluoromethane sulfonyl)imide at 0.1 M or more and 0.5 M or less. The nonaqueous electrolyte contains 1,3-dioxane.
    • 提高了充电至高电位的非水电解质二次电池的保存性能,同时电池的初始容量和循环特性也得到改善。 非水电解质二次电池包括:具有磷酸锂的正极和含有钴酸钴复合氧化物的正极活性物质和具有层结构的锂锰镍复合氧化物,所述锂钴复合氧化物在LiCoO 2中加入至少锆和镁; 具有负极活性物质的负极; 和具有非水溶剂和电解质盐的非水电解质。 基于锂,正极的电位大于4.3V且为5.1V以下。 非水电解质含有碳酸亚乙烯酯作为非水溶剂,作为电解质盐,为0.1M以上且0.5M以下的双(五氟乙烷磺酰基)亚胺锂和双(三氟甲磺酰基)亚胺锂中的至少一种。 非水电解质含有1,3-二恶烷。