| 主权项 |
1. A cell comprising:
a cell element including a positive electrode, a negative electrode and an electrolyte; a laminated film comprised of an exterior resin layer an interior resin layer and a metal layer and sealed to have a sealing portion, the sealing portion having a sealed portion and an edge portion; and electrode terminals electrically connected to the cell element and extending through the sealing portion to outside of the edge portion of the laminated film, wherein, the sealed portion is thermal welded, the edge portion is not thermal welded and is located at an outermost edge of the laminated film, a thickness t2 of the edge portion of the laminated film is larger than a thickness t1 of the thermal welded portion and a thickness t4 of thermal welded portions including the electrode terminals is larger than a thickness t3 of the thermal welded portions without the electrode terminals, and in cross section, the sealing portion has a y-shape. |
