| 摘要 |
Provided is a secondary battery capable of preventing the distance between electrode groups from getting away by applying uniform pressure to the electrode groups. The secondary battery comprises an electrode group which comprises a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode; a case(14) which accommodates the electrode group and has a convex part inside; a cap plate(17) which is combined with the case; and electrode terminals(21, 22) which are electrically connected with the electrode group so as to be projected to the external part of the case. |
