Battery cell and battery device including the same

Abstract

Battery cell comprising: a cell housing comprising a side wall forming a receiving space therein and a top plate in which a through-hole is formed; an electrode terminal coupled to the through-hole and comprising a projection formed on a lower section of the electrode terminal; an electrode assembly arranged in the receiving space of the cell housing; and a first current collector electrically connecting the electrode terminal and the electrode assembly, the first current collector comprising a recess into which the projection is inserted.