Patent ID: 8334068

Claim:
A laminate type secondary battery comprising: an outer package formed of laminated films having end portions which are at least partly bonded together to form a bonded part; a battery element hermetically accommodated in the outer package; a deformation-restricting part which includes a deformation restricting member, the deformation-restricting part being placed apart from the battery element and close to an inner wall of the outer package including the bonded part to restrict the deformation of the laminated film resulting from expansion and contraction of the outer package; and a deformation-allowing part which is arranged apart from the bonded part and between a portion of the deformation restricting part and the battery element and which allows the deformation of the laminated film resulting from the expansion and contraction of the outer package; wherein the deformation-allowing part is also arranged between the bonded part and the battery element; wherein the deformation-allowing part is further arranged such that the deformation-allowing part is located either between the deformation-restricting part and the battery element, or both between the deformation-restricting part and the battery element and in the deformation-restricting member and wherein the deformation-restricting member is not fixed to the outer package.