Unit Cell Having Cap Member And Secondary Battery Comprising Same

Abstract: The present invention relates to a secondary battery comprising unit cells each provided with: an electrode assembly having tab bundles and round portions; and cap members adjacent to the round portions of the electrode assembly, wherein each cap member includes: a pair of first surfaces parallel to the upper surface and the lower surface of the electrode assembly; a pair of second surfaces parallel to both side surfaces of the electrode assembly; a third surface connecting the pair of first surfaces to the pair of second surfaces; and an adhesive member provided in the inner space formed by the pair of first surfaces, the pair of second surfaces, and the third surface, so as to be in contact with a round portion of the electrode assembly, wherein a through-hole through which a tab bundle passes is formed in the third surface.

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