Patent ID: 9070927
Filing Date: 2015-06-30
Classification: H01M,Y02E,Y02P

Abstract:
1. An exterior member for a battery element comprising: a first sheet piece made of a laminated sheet; a second sheet piece made of the laminated sheet; a bending part for partitioning the first sheet piece and the second sheet piece from each other; a sealing part which is formed by a peripheral part of the first sheet piece in contact with a peripheral part of the second sheet piece corresponding to the peripheral part of the first sheet piece and which hermetically seals the battery element; and a thick-walled part that is a portion of the sealing part and includes at least a part of the bending part, wherein the thick-walled part has a greater thickness in a thickness direction of the battery element than a thickness of a portion of the sealing part other than the thick-walled part, and wherein the thickness direction of the battery element corresponds to a stacking direction of the battery element.