Patent ID: 7655347

Claim:
A battery comprising: a metal casing, wherein the casing includes a vent hole that provides communication between an inside of the battery and an outside of the battery; a safety valve made of a thin plate; and a synthetic resin seal member, provided between a peripheral edge portion around the vent hole and a peripheral edge portion of the safety valve, wherein the seal member indirectly connects the peripheral edge portion around the vent hole of the casing to the peripheral edge portion of the safety valve such that the peripheral edge portion around the vent hole does not contact the peripheral edge portion of the safety valve; wherein the seal member extends from an area outside the casing to an area inside the casing; and wherein the peripheral edge portion around the vent hole of the casing is indirectly connected to the peripheral edge portion of the safety valve such that the peripheral edge portion around the vent hole and the peripheral edge portion of the safety valve are inserted in the seal member.