SEPARATOR JOINING METHOD AND DEVICE

PROBLEM TO BE SOLVED: To provide a separator joining method, and a separator joining device, for stably joining separators 30 together that include a fusible material (31 or 33) and a heat-resistant material (32 or 34) having a melting temperature higher than that of the fusible material (31 or 33).SOLUTION: In a separator joining method, separators 30 that are laminated alternately with electrodes (a positive electrode 10 and a negative electrode 20) are joined together. In the separator joining method, a separator 30 is used that includes a fusible material (31 or 33) and a heat-resistant material (32 or 34) having a melting temperature higher than that of the fusible material (31 or 33). The separator joining method has a heating step and a pressurizing step. In the heating step, the positive electrode 10 is heated by heating members 300. In the pressurizing step following the heating step, the positive electrode 10 as heated is sandwiched by a pair of separators 30. Then, the pair of separators 30 with the positive electrode 10 sandwiched therebetween are sandwiched and pressurized by pressurizing members 400.