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Pub. No.:    WO/2018/084514    International Application No.:    PCT/KR2017/012073
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Tue Oct 31 00:59:59 CET 2017
IPC: H01M 10/04
H01M 2/30
H01M 2/26
Applicants: SAMSUNG SDI CO., LTD.
삼성에스디아이 주식회사
Inventors: LEE, Hye-Jung
One embodiment of the present invention provides a secondary battery in which the number of component parts is reduced and a connection structure is optimized in the connecting of uncoated portion taps of an electrode assembly to an electrode terminal, such that utilization of an internal space is increased. The secondary battery according to one embodiment of the present invention comprises: the electrode assembly formed by arranging electrodes, which have coated portion and uncoated portion taps, at both sides of a separator; a case for accommodating the electrode assembly; a cap plate coupled to an opening of the case and having a terminal hole; and an electrode terminal arranged outside the cap plate, having a terminal space formed therein and connected to the terminal hole, and electrically connecting, inside the terminal space, the uncoated portion taps passing through the terminal hole.