Jelly-roll type electrode assembly, lithium secondary battery having the same, and method for manufacturing the same

A lithium secondary battery comprising:

• a wound electrode assembly having a positive electrode plate, a negative electrode plate, a separator positioned between the positive and negative electrode plates, and a solid deformation prevention core located at or near the center of the wound electrode assembly, wherein the separator is fixed at one end to the deformation prevention core;
• a battery case adapted to contain the electrode assembly;
• and
• a cap assembly for sealing the battery case, wherein the cap assembly comprises a terminal electrically connected to the wound electrode assembly.

A method for manufacturing a lithium secondary battery comprising:

• attaching a positive electrode tab to a positive electrode plate;
• attaching a negative electrode tab to a negative electrode plate;
• positioning a separator between the positive and negative electrode plates;
• winding the positive and negative electrode plates and the separator around a solid deformation prevention core to form an electrode assembly, wherein the separator is fixed at one end to the deformation prevention core;
• and
• containing the electrode assembly in a battery case.