Patent ID: 9203060
Filing Date: 2015-12-01
Classification: H01M,Y02E,Y02P

Abstract:
1. A secondary battery comprising: an electrode assembly comprising a positive electrode, a separator, and a negative electrode; a case comprising an end plate and at least one wall extending therefrom defining an inner cavity, the case housing the electrode assembly in the inner cavity; a cap assembly coupled to the case for sealing the case; a positive current collecting plate comprising a first side connected to the positive electrode in the case and a second side connected to the cap assembly; an insulator in the case adjacent the end plate; and a negative current collecting plate comprising a first side connected to the negative electrode and a second side adjacent the insulator and connected to the end plate at a connection portion of the end plate, wherein the end plate is curved convexly toward the inner cavity of the case from one side of the case to another side of the case in its entirety, and wherein the end plate comprises at least one notch having a thickness less than a thickness of an adjacent portion of the end plate.