Rechargeable battery and method of injecting electrolyte thereinto

Provided is a pouch-type rechargeable battery (100). A rechargeable battery (100) according to an exemplary embodiment of the present invention includes: an electrode assembly (20) including a positive electrode (21), a negative electrode (22), and a separator (23) interposed between the positive electrode (21) and the negative electrode (22); a case (10) receiving the electrode assembly (20); an electrolyte solution injection member (30, 130, 230, 330, 430) positioned at one side of the case (10) and forming an injection hole (32, 132, 232, 332, 432); and a sealing member (40, 140, 240, 340, 440) covering and sealing the injection hole (32, 132, 232, 332, 432).