Rechargeable battery

A rechargeable battery comprising:

• an electrode assembly formed by spirally winding a first electrode, a separator, and a second electrode;
• a case accommodating the electrode assembly;
• an electrode terminal in a first opening at one side of the case and electrically insulated from the case;
• a first current collecting plate electrically connecting the first electrode and the electrode terminal;
• a vent plate closing and sealing a second opening at another side of the case;
• a second current collecting plate electrically connecting the second electrode and a beading portion of the case at an inner side of the vent plate;
• and
• a gasket between the second current collecting plate and the vent plate and between the second current collecting plate and the case, the gasket closing and sealing between a crimping portion connected to the beading portion,
• wherein the second current collecting plate comprises:
• a base portion on an uncoated portion of the second electrode;
• an elastic portion connected to the base portion;
• and
• a wing welding portion connected to the elastic portion and welded to the beading portion,
• wherein the elastic portion is bent at a first inward angle toward a center of the base portion in a radial direction thereof and at a first outward angle toward an outer edge of the base portion in the radial direction, and
• wherein the first inward angle is an acute angle formed between the base portion and the elastic portion.