| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a secondary battery including an electrode assembly in which positive and negative electrodes and a separator may be exactly arranged, thereby: enhancing the current collecting efficiency of each of the positive and negative electrodes; and improving output performance, service life and reliability are improved. <P>SOLUTION: The secondary battery includes the electrode assembly and a case housing the electrode assembly. The electrode assembly has: a plurality of first electrodes each including a first coated region coated with a first active material and a first uncoated region having a first alignment opening and a second alignment opening; a plurality of second electrodes each including a second coated region coated with a second active material and a second uncoated region having a third alignment opening and a fourth alignment opening; and the separator interposed between each first coated region and each second coated region, wherein the first alignment openings in the plurality of first electrodes are aligned with each other, the second alignment openings in the plurality of first electrodes are aligned with each other, the third alignment openings in the plurality of second electrodes are aligned with each other, and the fourth alignment openings in the plurality of second electrodes are aligned with each other. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
