Samsung Sdi Co., Inc.

Jiwon Yun

Jaeil Seong

Hideaki Yoshio

A secondary battery including: an electrode assembly; a case accommodating the electrode assembly; a cap assembly including a cap plate coupled to the case, and a bottom plate attached to a bottom surface of the cap plate; and an electrode terminal protruding from the cap assembly and electrically connected to the electrode assembly, and the bottom plate includes a terminal plate electrically connected to the electrode terminal, and an insulation film stacked on the terminal plate and electrically insulating the terminal plate and the cap plate from each other, the insulation film being integrally formed with the terminal plate.

Secondary battery

A secondary battery, which can improve safety during a longitudinal compression test by reinforcing strength of a cap plate, is provided. In one embodiment, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and cap plate coupled to a top portion of the can and sealing the can, wherein a reinforcement unit is formed on at least one side of the cap plate.

Secondary battery including cap plate comprising reinforcing element

A secondary battery including an electrode assembly and a case accommodating the electrode assembly, the case including a bottom surface, a first pair of parallel sidewalls and a second pair of parallel sidewalls, connected with the bottom surface, and a corner portion formed by an intersection of each of the first pair of parallel sidewalls and the bottom surface, the corner portion having a first radius of curvature at a first region, and a second radius of curvature different from the first radius of curvature at a second region.

A secondary battery including an electrode assembly; a case containing the electrode assembly; a cap plate sealing an opening of the case; a terminal plate electrically connected to the electrode assembly; an electrode terminal electrically connected to the terminal plate; and an insulation layer between the cap plate and the terminal plate and electrically insulating the cap plate and the terminal plate from each other, and the terminal plate includes a first metal layer connected to the electrode terminal, and a second metal layer on the first metal layer, the second metal layer being between the first metal layer and the insulation layer.

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Yongin-si, South Korea

Jiwon Yun