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    • 3. 发明授权
    • Composition for forming electrode active material of lithium secondary battery, composition for forming separator and method of preparing lithium secondary battery using the compositions
    • 用于形成锂二次电池的电极活性材料的组合物,用于形成隔膜的组合物和使用该组合物制备锂二次电池的方法
    • US06692873B1
    • 2004-02-17
    • US09629951
    • 2000-08-01
    • Chi-kyun ParkArchana KakirdePeikang LiuVenkatesan ManivannanChul ChaiDong-joon IhmJon-ha LeeKwon-sun Roh
    • Chi-kyun ParkArchana KakirdePeikang LiuVenkatesan ManivannanChul ChaiDong-joon IhmJon-ha LeeKwon-sun Roh
    • H01M216
    • H01M2/145H01M2/1653H01M2/1673H01M10/04H01M10/052Y10T29/49115
    • An electrode active material forming composition, a separator forming composition and a manufacturing method of a lithium secondary battery using the compositions are provided. The method for manufacturing a lithium secondary battery including the steps of (a) coating electrode active material compositions each comprising a electrode active material, a binder and a solvent on an electrode current collector to form a cathode and an anode, (b) forming a separator on both surfaces of the anode using a composition for forming a separator comprising a polymer resin, a plasticizer, a filler and a solvent; (c) disposing and fixedly adhering the cathode on the separator to form a battery structure, (d) drying the battery structure under a vacuum condition, and (e) impregnating an electrolytic solution into the resultant structure, wherein the plasticizer of the composition for forming the separator is at least one material selected from the group consisting of an ethylene glycol derivative, a cyclic carbonate, a non-cyclic carbonate and propylene glycol carbonate. Therefore, since a plasticizer can be removed under a vacuum condition, the time required for manufacturing a battery can be reduced and the manufacturing process becomes simplified, thereby improving the productivity. Also, since an organic solvent extraction process using an organic solvent is not necessary, unlike in the conventional art, the cost required for a recovery facility of an organic solvent can be reduced. Further, uniform pores are formed in electrodes and a separator, the porosity characteristics are excellent, and adhesion between the separator and the electrodes is excellent, thereby exhibiting excellent high-rate, lifetime, and low-temperature characteristics.
    • 提供电极活性物质形成组合物,隔膜形成用组合物和使用该组合物的锂二次电池的制造方法。 一种锂二次电池的制造方法,包括以下步骤:(a)在电极集电体上涂布均包含电极活性物质,粘合剂和溶剂的电极活性物质组合物,形成阴极和阳极,(b) 使用用于形成包含聚合物树脂,增塑剂,填料和溶剂的隔膜的组合物的阳极的两个表面上的隔板; (c)将阴极设置并固定在隔板上以形成电池结构,(d)在真空条件下干燥电池结构,和(e)将电解液浸渍到所得结构中,其中用于 形成隔膜的是至少一种选自乙二醇衍生物,环状碳酸酯,非环状碳酸酯和丙二醇碳酸酯的材料。 因此,由于可以在真空条件下去除增塑剂,所以可以减少制造电池所需的时间,并且制造过程变得简化,从而提高生产率。 此外,由于不需要使用有机溶剂的有机溶剂萃取方法,与常规技术不同,可以降低有机溶剂的回收设备所需的成本。 此外,在电极和隔膜中形成均匀的孔,孔隙率特性优异,隔板和电极之间的粘附性优异,因此表现出优异的高速率,寿命和低温特性。
    • 4. 发明授权
    • Method of measuring residual capacity of a Ni/MH cell
    • 测量Ni / MH电池剩余容量的方法
    • US5701078A
    • 1997-12-23
    • US501823
    • 1995-07-13
    • Jai-Young LeeHwan-Cheol LeeJon-Ha LeeHan-Ho LeeDong-Myung Kim
    • Jai-Young LeeHwan-Cheol LeeJon-Ha LeeHan-Ho LeeDong-Myung Kim
    • G01R31/36G01N27/27
    • G01R31/3662Y10S320/21
    • The present invention relates to a method of measuring residual capacity of a Ni/MH (nickel/metal hydride) cell by measuring the change in the electrical resistivity of a Ni/MH cell according to the change of the concentration of hydrogen in metal hydride. According to the present invention, a method for measuring residual capacity of a Ni/MH cell comprises the steps of measuring electrical resistivity of a first Ni/MH cell, and determining the residual capacity of the first Ni/MH cell (i) from a predetermined data of n-pairs of electrical resistivity values and residual capacity values of a second Ni/MH cell which has substantially the same composition as the composition of the first Ni/MH cell, or (ii) based on a predetermined functional relationship between the electrical resistivity and residual capacity of the second Ni/MH cell. The series of the predetermined data or the predetermined functional relationship represents substantially a linear proportionally between the resistivity and the logarithmic value of the residual capacity. As the discharge reaction proceeds in the cell, metal hydride in the anode is reduced and loses hydrogen, and thus the hydrogen concentration at anode becomes lower. Accordingly, the relationship between the residual capacity and the resistivity of a Ni/MH cell can be obtained by measuring the residual capacity and the resistivity of the cell depending on the degree of discharge, therefore the residual capacity can be readily detected by measuring only the resistivity of the cell.
    • 本发明涉及一种通过根据金属氢化物中的氢浓度的变化来测量Ni / MH电池的电阻率的变化来测量Ni / MH(镍/金属氢化物)电池的残余容量的方法。 根据本发明,用于测量Ni / MH电池的剩余容量的方法包括以下步骤:测量第一Ni / MH电池的电阻率,以及从第一Ni / MH电池确定第一Ni / MH电池(i)的剩余容量 具有与第一Ni / MH电池的组成基本相同的组成的第二Ni / MH电池的n对电阻率值和剩余容量值的预定数据,或者(ii)基于第一Ni / 第二Ni / MH电池的电阻率和剩余容量。 预定数据或预定功能关系的一系列在电阻率与剩余容量的对数值之间基本成比例地表示线性。 随着电池中的放电反应进行,阳极中的金属氢化物减少并且损失氢,因此阳极中的氢浓度变低。 因此,可以通过根据放电度测量电池的剩余容量和电阻率来获得Ni / MH电池的残留容量和电阻率之间的关系,因此可以容易地通过仅测量电池容量来检测剩余容量 电池的电阻率。