Patent ID: 7993777
Filing Date: 2011-08-09
Classification: H01M,Y02E,Y02P

Abstract:
1. A lithium secondary battery, comprising: an electrode assembly including a first electrode plate, a second electrode plate and a separator; a can to receive the electrode assembly and an electrolyte; and a cap assembly including a cap plate, an insulating plate, a terminal plate and an electrode terminal including a head and a shank which is disposed to pass through the terminal plate, the cap assembly assembled over an upper opening of the can to seal the can; the terminal plate includes a terminal hole to receive the electrode terminal and a fixing unit and a protrusion on the shank of the electrode terminal on the opposite side of the head of the electrode terminal engaged with the fixing unit such that the electrode terminal can prevent the terminal plate from rotating, the fixing unit includes at least two recesses arranged on a lower surface of the terminal plate and connected to the terminal hole; and the at least two recesses of the fixing unit are inclined from the lower surface of the terminal plate toward the terminal hole.