Patent ID: 8323828
Filing Date: 2012-12-04
Classification: H01M,Y02E,Y10S,Y10T

Abstract:
1. A battery case forming laminated sheet for forming a battery case for containing a battery therein, said battery case forming laminated sheet comprising: a laminated film comprising an aluminum layer as an intermediate layer, and a first and second synthetic resin layer on both surfaces of the aluminum layer, the first synthetic resin layer being on an outer side of the aluminum layer, the second synthetic resin layer being on an inner side of the aluminum layer, wherein the first synthetic resin layer is a plastic film comprising a biaxially oriented layer, and the second synthetic resin layer is a plastic film layer comprising a biaxially oriented layer on the inner side of the aluminum layer and a heat-adhesive resin layer as a layer on an innermost side of the aluminum layer, so that parts of the plastic film of the first synthetic resin layer and plastic film of the second resin layer are removed by irradiation of a laser beam to the laminated sheet, in a form of melted mist to form a pressure relieving part having incisions.