Patent ID: 8039147
Filing Date: 2011-10-18
Classification: H01M,Y02E,Y02P

Abstract:
1. A rechargeable battery comprising: an electrode assembly comprising a first electrode configured to have a first polarity, a second electrode configured to have a second polarity, and a separator between the first electrode and the second electrode, the electrode assembly having a jelly roll shape with an inner end proximal to the center of the jelly roll and a second end distal to the center of the jelly roll, a first lateral side, and a second lateral side facing oppositely away from the first lateral side; a case containing the electrode assembly and electrically connected to the second electrode; a cap plate coupled to the case; and a short circuit member electrically connected to the first electrode and wound around the electrode assembly, wherein the first electrode comprises a first uncoated region extending to the first lateral side of the electrode assembly, and a portion of the short circuit member is welded to the first uncoated region and wherein the rechargeable battery further comprises a second electrode assembly inside the case, wherein the short circuit member is integrally wound around all the electrode assemblies.