FIGS. 18A and 18B are diagrams depicting a curved state in a method in the related art, in which a wave shape is formed on the laminate films.
FIGS. 19A and 19B are views illustrating a state in a case where an external force is applied to the laminate films in a direction parallel to the ridge of the wave.
FIG. 20 is a view illustrating a state in which the laminate film is extended in the perpendicular direction and a parallel direction to the ridge of the wave.
FIGS. 21A and 21B are diagrams illustrating a state in which the laminate films are curved downward from the upper side.
FIG. 22 is a view illustrating a state in which the laminate films are curved.
FIG. 23 is a view illustrating a state of a part when the side surface of the protrusion is curved.
FIG. 24 is a view illustrating a state in a case where the protrusion of the laminate film, which accommodates an electrode group, is bonded on four sides without performing a process in advance.
DESCRIPTION OF EMBODIMENTS
Hereinafter, various embodiments will be described with reference to the drawings.
