| 摘要 |
A method for producing a battery comprises a deformation step for moving a first metal foil (11) forming a pair of perpendicularly intersecting portions (44d, 44e) of a first metal, respectively, toward the outside in a second radial direction while enlarging the inside diameter, in the second radial direction (Y), of a first metal winding part (44) by making a force act on the pair of perpendicularly intersecting portions (44d, 44e) of a first metal toward the outside in the second radial direction, and a resistance welding step for pressing a pair of first metal welding portions (44b, 44c) toward the inside in a first radical direction under a state where the first terminal welding part (53) of a first current collecting terminal member (50) is arranged on the radial by inside of the first metal winding part (44) after the first metal winding part (44) is deformed, and then resistance welding the first metal welding portions (44b, 44c) to the first terminal welding part (53) under a state where the pair of first metal welding portions (44b, 44c) are brought into pressure contact with the first terminal welding part (53).
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