Patent ID: 8497033
Filing Date: 2013-07-30
Classification: H01M,Y02E,Y02P

Abstract:
1. A prismatic battery, comprising: an electrode assembly including electrode plates and a separator, the separator being wound between the electrode plates; a can defining a space receiving the electrode assembly; and a cap plate covering the space, the cap plate being configured to deform away from the space when predetermined sides of the can are deformed toward the space, wherein a hole is defined through the cap plate in a center region thereof, wherein the electrode assembly further includes an electrode terminal disposed through the hole such that an upper portion thereof is exposed at an exterior of the prismatic battery, the electrode terminal being electrically coupled to one of the electrode plates via a terminal plate and being electrically insulated from the cap plate, wherein the cap plate has at least two stepped portions extending away from the space, the at least two stepped portions: wherein each stepped portion has a side surface inclined at an angle with respect to a major surface of the cap plate, and wherein the terminal plate and the electrode terminal are coupled to the cap plate, the terminal plate and a lower portion of the electrode terminal being disposed between the concave feature and the electrode assembly.