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    • 100. 发明公开
    • STEPPED ELECTRODE ASSEMBLY COMPRISING STEP UNIT CELL
    • GESTUFTE ELEKTRODENANORDNUNG MIT STUFENEINHEITSZELLE
    • EP2860810A1
    • 2015-04-15
    • EP14725951.9
    • 2014-02-06
    • LG Chem, Ltd.
    • KWON, Sung-JinKIM, Dong-MyungKIM, Ki-WoongAHN, Soon-Ho
    • H01M10/04H01M2/02H01M2/04
    • H01M10/0585H01M2/1673H01M10/02H01M10/04H01M10/0413H01M10/0436H01M10/052H01M10/0525H01M10/0583Y02T10/7011
    • There is provided a stepped electrode assembly including: a first electrode stack including at least one first unit cell, the first unit cell including at least one positive electrode and at least one negative electrode having the same area and being alternately stacked in a vertical direction with a separator disposed therebetween; and a second unit cell including at least one positive electrode and at least one negative electrode that are alternately stacked in the vertical direction with a separator disposed therebetween, the second unit cell disposed on a side of the first electrode stack with a separator disposed therebetween, wherein the second unit cell includes a first area electrode having the same area as an electrode area of the first electrode stack and a second area electrode having an area different from the area of the first area electrode, wherein the second unit cell is a stepped unit cell including a stepped portion formed by an area difference between the first and second area electrodes. The degree of structural freedom of the electrode assembly may be markedly improved in the thickness direction thereof, and thus the electrode assembly may be used to form secondary batteries having various shapes to cope with various shapes of devices.
    • 提供了一种阶梯式电极组件,包括:第一电极堆叠,包括至少一个第一单元电池,第一单元电池包括至少一个正电极和至少一个具有相同面积的负电极,并且在垂直方向上交替堆叠, 分隔件; 以及包括至少一个正电极和至少一个负电极的第二单元电池,其中隔着所述隔板设置在所述垂直方向上交替地堆叠,所述第二单元电池设置在所述第一电极堆叠的一侧,隔着所述第一电极堆叠, 其中所述第二单电池包括具有与所述第一电极堆叠的电极面积相同的面积的第一区域电极和具有与所述第一区域电极的区域不同的区域的第二区域电极,其中所述第二单元是阶梯单元 电池包括由第一和第二区域电极之间的面积差形成的阶梯部分。 电极组件的结构自由度可以在其厚度方向上显着改善,因此电极组件可用于形成具有各种形状的二次电池以应对各种形状的装置。