Patent ID: 9660255
Date: 2017-05-23
CPC Classifications: H01M,Y02E,Y02P,Y10T

Claim:
1. A wrapping electrode assembly for use in a secondary battery manufactured by an electrode-stacking method, the wrapping electrode assembly comprising: an electrode plate which has a coating layer of an electrode active material, the electrode active material being capable of reversibly inserting and extracting lithium ions, the electrode plate including an upper surface, a lower surface, side surfaces, and a non-coated protruding portion or a tab formed in one of the side surfaces; first and second separator films which cover the upper surface and the lower surface, respectively, of the electrode plate while exposing at least part of the non-coated protruding portion; and an insulating polymer film which is positioned between the first separator film and the second separator film for at least a portion of the electrode plate to be bonded to the first separator film and the second separator film, wherein the insulating polymer film includes a first member, a second member, a third member and a fourth member arranged to surround the side surfaces of the electrode plate, any one member among the first member, the second member, the third member and the fourth member includes a tab accommodating portion for accommodating the non-coated protruding portion or the tab of the electrode plate, the any one member has a width larger than those of the other members, and any one of the first separator and the second separator includes contact portions to which the first member, the second member, the third member and the fourth member are bonded.