Rechargeable battery

A rechargeable battery including an electrode unit body comprising:

• a first separator;
• a first electrode plate and a second electrode plate of a first electrode disposed to be separated from each other on one surface of the first separator;
• a second separator disposed on the first electrode plate and the second electrode plate of the first electrode;
• and
• a first electrode plate of a second electrode corresponding to the first electrode plate of the first electrode and disposed on one surface of the second separator,
• wherein the first and the second separators are folded between the first electrode plate and the second electrode plate of the first electrode.

A manufacturing method of a rechargeable battery comprising:

• disposing a first electrode plate and a second electrode plate of a first electrode to be separated from each other between a first separator and a second separator;
• providing a first electrode plate of a second electrode to the first separator to correspond to the first electrode plate of the first electrode;
• providing a second electrode plate of the second electrode to the second separator to correspond to the second electrode plate of the first electrode;
• folding the first separator and the second separator between the first electrode plate and the second electrode plate of the first electrode to form an electrode unit body of an electrode assembly, the electrode unit body including a first region and a second region that are divided based on a folding center in which the first and second separators including at least two facing sheets are folded, wherein the first and second electrode plates of the first electrode and the first and second electrode plates of the second electrode are alternately stacked with the first and second separators therebetween in each of the first region and the second region;
• and
• arranging the electrode assembly and an electrolyte solution in a case.