| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a secondary battery, by which the occurrence of warp in a laminate constituting part of a battery can be suppressed, and an active material of the laminate can be densified.SOLUTION: A method for manufacturing a secondary battery is arranged so as to press a laminate 1 including a piece of conductive metal foil 3, active material layers 2A and 2B formed on opposing faces of the conductive metal foil respectively, and an uncoated part 1B with no active material coating, which makes part of the piece of conductive metal foil 3, thereby densifying an active material of the laminate. In the method, a pair of press rolls 5A and 5B are provided for pressing the laminate 1 from both sides. The pair of press rolls 5A and 5B each have: a first press part 51 for pressing an active material part 1A; and a second press part 52 for pressing the uncoated part 1B. The second press part 52 has a convex portion 53 arranged to protrude for decreasing the difference in size between the active material part 1A and the uncoated part 1B in the laminate 1 in a thickness direction. In a state in which the laminate 1 is pressed by the pair of press rolls 5A and 5B from both the sides, the active material part 1A is compressed by the first press parts 51, and the uncoated part 1B is compressed by the convex portions 53 of the second press parts 52.SELECTED DRAWING: Figure 1 |
