| 摘要 |
<p>PURPOSE: A secondary battery is provided to reduce current moving distance, thereby capable of improving power properties, and to be highly charged and discharged, and to have large capacity per same area. CONSTITUTION: A secondary battery comprises an electrode assembly(100). The electrode assembly comprises a first electrode plate comprising a first tap part(111), a second electrode comprising a second tap part(121), and a separator(130) inserted between the electrode plates. Distance each tap part starts, separated from a center part and each width of the first tap part and/or the second tap part satisfies formula: 0.5x < a < x, 0 < b < 0.5x. In the formula, a is the width of a tap part, b is distance each tap part stats, separated from the center part, and x is 1/2 of total width of the electrode plate.</p> |
