Samsung Sdi Co., Inc.

Jongha Lee

Junsun Yong

Sangjin Lee

A secondary battery includes an electrode assembly, a can, a cap plate, an insulating plate, and a terminal plate. The electrode assembly is in the can. The cap plate seals an opening of the can and includes a first hole. The insulating plate is on a lower surface of the cap plate and includes a second terminal through hole. The terminal plate is on a lower surface of the insulating plate and includes a third terminal through hole and at least one protrusion adjacent the third terminal through hole.

Rechargeable battery and manufacturing method thereof

A secondary battery includes an electrode assembly, a can housing the electrode assembly, the can having a long axis and a short axis, and a cap plate that seals an opening of the can. The can includes a first side surface and a second side surface that face each other so as to correspond to the short axis of the can, the first side surface and the second side surface having a first thickness, a third side surface and a fourth side surface that face each other so as to correspond to the long axis of the can, the third side surface and the fourth side surface having a second thickness, the second thickness being greater than the first thickness, and a bottom surface that is located opposite the opening of the can and contacts the first through fourth side surfaces, the bottom surface having a third thickness.

Secondary battery

According to aspects of embodiments of the present invention, a secondary battery includes: an electrode assembly including: a first electrode plate; a second electrode plate; and a separator between the first electrode plate and the second electrode plate; a can comprising an opening formed on an end of the can to accommodate the electrode assembly; and a cap plate configured to seal the opening of the can, the cap plate including: a first surface; a second surface parallel to the first surface; a third surface coupling the first and second surfaces and having a constant height; and a chamfer at a portion of the first surface which contacts the third surface, wherein the chamfer has a varying tilt.

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Yongin-si, South Korea

Jongha Lee