公开(公告)号：US20100248023A1

公开(公告)日：2010-09-30

申请号：US12732912

申请日：2010-03-26

申请人： Sho Tsuruta ,  Motoharu Saito ,  Katsunori Yanagida ,  Masahisa Fujimoto

发明人： Sho Tsuruta ,  Motoharu Saito ,  Katsunori Yanagida ,  Masahisa Fujimoto

IPC分类号： H01M6/14

CPC分类号： H01M4/131 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  Y10T29/49108

摘要： A non-aqueous electrolyte battery has a working electrode 1 having a positive electrode active material, a counter electrode 2, and a non-aqueous electrolyte containing lithium. The positive electrode active material includes a lithium pre-doped transition metal oxide prepared by pre-doping lithium into a sodium-containing transition metal oxide having an initial charge-discharge efficiency of higher than 100% as determined by charging and discharging using a lithium metal negative electrode as a counter electrode, and the sodium-containing transition metal oxide is represented by the compositional formula NaaLibMO2±α, where 0.5≦a

摘要翻译： 非水电解质电池具有具有正极活性物质的工作电极1，对电极2和含有锂的非水电解质。 正极活性物质包括锂预预掺杂的过渡金属氧化物，其通过将锂预掺杂到初始充电 - 放电效率高于100％的含钠过渡金属氧化物中，通过使用锂金属进行充电和放电测定 负极作为对电极，含钠过渡金属氧化物由组成式NaaLibMO2±α表示，其中0.5＆lt; 1lE; a <1.0,0

公开(公告)号：US20100239912A1

公开(公告)日：2010-09-23

申请号：US12728718

申请日：2010-03-22

申请人： Motoharu Saito ,  Sho Tsuruta ,  Masahisa Fujimoto

发明人： Motoharu Saito ,  Sho Tsuruta ,  Masahisa Fujimoto

IPC分类号： H01M4/50 ,  H01M10/04

CPC分类号： H01M4/505 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/052 ,  H01M10/058 ,  Y02T10/7011 ,  Y10T29/49108 ,  Y10T29/49112 ,  Y10T29/49115

摘要： A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material containing a lithium-containing oxide active material, a negative electrode, and a non-aqueous electrolyte. The lithium-containing oxide active material is represented by the general formula LiaMgbMO2±α, where 0.65≦a≦1.05, 0

摘要翻译： 非水电解质二次电池具有含有含有锂的氧化物活性物质，负极和非水电解质的正极活性物质的正极。 含锂氧化物活性物质由通式LiMgbMO2±α表示，其中0.65＆nlE; a＆nlE; 1.05,0

公开(公告)号：US20110121786A1

公开(公告)日：2011-05-26

申请号：US12953970

申请日：2010-11-24

申请人： Sho Tsuruta ,  Katsunori Yanagida

发明人： Sho Tsuruta ,  Katsunori Yanagida

IPC分类号： H02J7/00 ,  H02J7/04

CPC分类号： H01M10/443 ,  G01R31/382 ,  H01M4/525 ,  H01M10/052 ,  H01M10/48

摘要： A method of detecting a condition of a secondary battery is provided. The method includes the steps of: measuring an entropy change at a predetermined state of charge of the secondary battery; charging the secondary battery after the step of measuring an entropy change; repeating the steps of measuring an entropy change and charging the secondary battery; and detecting a deterioration condition of the secondary battery based on the slope of a measured entropy change curve with respect to state of charge.

摘要翻译： 提供一种检测二次电池的状态的方法。 该方法包括以下步骤：测量在二次电池的预定充电状态下的熵变; 在测量熵变的步骤之后对二次电池充电; 重复测量熵变并对二次电池充电的步骤; 以及基于相对于充电状态的测量熵变曲线的斜率来检测二次电池的劣化状况。

公开(公告)号：US20110074430A1

公开(公告)日：2011-03-31

申请号：US12893534

申请日：2010-09-29

申请人： Sho Tsuruta ,  Katsunori Yanagida

发明人： Sho Tsuruta ,  Katsunori Yanagida

IPC分类号： G01N27/416

CPC分类号： H01M10/42 ,  H01M10/052 ,  H01M10/486

摘要： A method for evaluating a secondary battery includes repeatedly performing: an open circuit voltage measurement step of measuring the open circuit voltage of the secondary battery to be evaluated at each of a plurality of temperatures; a potential change measurement step of measuring, after the open circuit voltage measurement step, the potential change in the secondary battery while changing the state of charge of the secondary battery; and an equilibrium potential measurement step of measuring the equilibrium potential of the secondary battery after the potential change measurement step. An entropy variation in each of the different states of charge is calculated based on the open circuit voltages at the plurality of temperatures measured in the state of charge, and a chemical diffusion coefficient in each of the different states of charge is calculated based on the equilibrium potential of the secondary battery and the potential change in the secondary battery both measured in the state of charge. The secondary battery is evaluated based on the entropy variations and the chemical diffusion coefficients in the different states of charge.

摘要翻译： 一种用于评估二次电池的方法包括重复执行：开路电压测量步骤，用于在多个温度中的每一个温度下测量待评估的二次电池的开路电压; 电位变化测量步骤，在所述开路电压测量步骤之后，在改变所述二次电池的充电状态的同时，测量所述二次电池的电位变化; 以及在电位变化测量步骤之后测量二次电池的平衡电位的平衡电位测量步骤。 基于在充电状态下测量的多个温度下的开路电压来计算各种不同的充电状态中的熵变，并且基于平衡来计算每种不同充电状态的化学扩散系数 二次电池的电位和二次电池的电位变化都是在充电状态下测量的。 基于不同充电状态下的熵变和化学扩散系数来评估二次电池。