Secondary Battery And Sealing Block

A secondary battery according to an embodiment of the present disclosure may include an electrode assembly and a pouch-type batter. The battery case may include a cup part to accommodate electrode assembly. A sealing part may extend outward from an edge of the cup part and may be sealed. A venting device may be inserted into the sealing part through which a gas inside the cup part may be discharged to the outside. The sealing part may include a vent sealing portion into which the venting device may be inserted, and a weak sealing portion which may be positioned between the vent sealing portion and the cup part and sealed more weakly than the periphery thereof.