CAP ASSEMBLY AND SECONDARY BATTERY INCLUDING THE SAME

A secondary battery is provided. The secondary battery includes an electrode assembly, a sub-plate assembly comprising a sub-plate connected to the electrode assembly and a current collector coupled to the sub-plate, and a terminal plate coupled to the current collector. The terminal plate defines a recess in a top surface of the terminal plate. The recess includes a first tapered part having a first inclination angle with respect to a direction parallel to the terminal plate, and a second tapered part having a second inclination angle with respect to the direction parallel to the terminal plate. The first inclination angle and the second inclination angle are different from each other.