SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

A secondary battery according to the present invention comprises: an electrode assembly having a structure in which a first electrode sheet and a second electrode sheet are stacked and wound with a separation sheet interposed therebetween, wherein a first electrode tab protrudes in the first electrode sheet, and a second electrode tab protrudes in the second electrode sheet; a battery can configured to accommodate the electrode assembly; and a connection part provided above or below the electrode assembly to face the electrode assembly, wherein the connection part comprises: a first area which is made of a gel material having electrical conductivity; and a second area which is attached to the first area and made of a material having electrical insulation, wherein the second area forms at least a portion of a top surface of the connection part, and at least a portion of the first electrode tab or the second electrode tab is inserted into the first area of the connection part.