Secondary battery with a spirally-rolled electrode group

A secondary battery with an electrode group in which a positive electrode and a negative electrode are spirally-rolled interposing a separator therebetween contained in a bottomed cylindrical can, sealed by a cover body,

• a metal-made current collecting plate electrically connected to a metal exposure portion provided on an end surface of the positive electrode of the electrode group and to the cover body by a metal lead plate, wherein the cover body functions as a positive electrode terminal, and
• a metal-made current collecting plate electrically connected to a metal exposure portion provided on an end surface of the negative electrode of the electrode group and to the bottomed cylindrical can, wherein the bottom cylindrical can functions as a negative electrode terminal,
• wherein one or more electrolyte resistant metal pressers are arranged between the metal-made current collecting plate and the cover body, wherein the metal-made current collecting plate and the cover body are electrically connected by the metal presser parallel to the metal lead plate,
• wherein the metal-made current-collecting plate of the negative electrode and the bottom portion of the bottomed cylindrical can are electrically connected by pressure contact or welding, and wherein the electrode group is in a state of applied pressure by the cover body and the bottom portion of the bottomed cylindrical can.