Patent ID: 8993143
Filing Date: 2015-03-31
Classification: H01M,Y02E,Y02P

Abstract:
1. A winding type electrode assembly (‘jelly-roll’) constructed in a structure in which a cathode sheet and an anode sheet are wound in a circle while a separator is interposed between the cathode sheet and the anode sheet or the assembly is compressed in one direction after winding, comprising: a cathode sheet having a cathode active material on opposite sides of the cathode sheet; an anode sheet having an anode active material on opposite sides of the anode sheet; an active material non-coated portion formed at the end of the cathode sheet or the anode sheet; an elastic member attached to an inner surface of the active material non-coated portion; and a conductive tape attached to the end of the cathode sheet or the anode sheet for covering the wound outside of the jelly-roll, the conductive tape attached to an outer surface of the non-coated portion.