Battery manufacturing method

The invention relates to a manufacturing method of a battery. This method for manufacturing a battery is a method for manufacturing a battery provided with a wound electrode body in which a first separator, a negative electrode plate, a second separator, and a positive electrode plate are wound. This method for manufacturing a battery comprises: a step (A) in which a first separator is adsorbed to a winding core; a step B in which the first separator is wound around the winding core; and a step C for extracting the wound electrode body from the winding core. A first hole group and a second hole group are formed on the outer peripheral surface of the winding core. In the step A, the first diaphragm is sucked by suction of at least one of the first hole group and the second hole group. The first hole group and the second hole group are configured so as to be controllable so as to independently suck or release gas. 本发明涉及电池的制造方法。在此公开的电池的制造方法是具备第1隔膜、负极板、第2隔膜以及正极板卷绕而成的卷绕电极体的电池的制造方法。电池的制造方法具有：将第1隔膜吸附于卷芯的工序A；将第1隔膜卷绕在