ELECTRODE ASSEMBLY AND POLYMER SECONDARY BATTERY CELL INCLUDING THE SAME

摘要

An electrode assembly includes a cell stack part having a structure of steps obtained by stacking at least two groups of radical units having different sizes or having different geometric shapes according to the size or the geometric shapes. The radical unit has a combined structure into one body by alternately same number of electrodes and separators, and each step of the cell stack part has a structure in which one kind of radical units is disposed once or repeatedly, or a structure in which at least two kinds of radical units are disposed. The one kind of radical unit has a four-layered structure of first electrode, first separator, second electrode and second separator sequentially stacked or a repeating structure of the four-layered structure. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

主权项

1. An electrode assembly, comprising:
a cell stack part having a structure of a plurality of steps obtained by stacking radical units according to a size or geometric shape thereof, the radical units being classified into at least two groups having (different sizes or geometric shapes, wherein the radical unit has a same number of electrodes and separators which are alternately disposed and integrally combined, wherein each step of the cell stack part has (a) a structure in which one kind of radical unit is disposed once or repeatedly or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order, wherein the one kind of radical unit of (a) has a four-layered structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked together or a repeating structure in which the four-layered structure is repeatedly stacked; and wherein each of the at least two kinds of radical units of (b) are stacked by ones in the predetermined order to form the four-layered structure or the repeating structure in which the four-layered structure is repeatedly stacked.