Method of manufacturing secondary battery

A method of manufacturing a secondary battery including an electrode body having a plurality of positive electrode plates, a plurality of negative electrode plates, and separators, the method comprising:

• a layering step of forming the electrode body in which the positive electrode plates and the negative electrode plates are alternately layered with the separators interposed in between;
• and
• the layering step including,
• (A) a step of forming a layered sheet by disposing the plurality of negative electrode plates at intervals between a long first separator and a long second separator and by adhering the long first separator and the long second separator to two surfaces of the plurality of negative electrode plates with adhesion layers interposed in between, the layered sheet including the first separator, the plurality of negative electrode plates, and the second separator,
• (B) a step of forming a layered body by cutting the layered sheet at portions where the negative electrode plates are not disposed, the layered body having the two surfaces of the negative electrode plates sandwiched between the first and second separators, and
• (C) a step of forming the electrode body, the electrode body having the positive electrode plates and the negative electrode plates alternately layered on each other with the separators inter used in between, by using the layered body.