| 摘要 |
An aspect of the present invention is to provide a secondary battery which minimizes the deformation of a curved case and maintains the curved case. The secondary battery according to an embodiment of the present invention includes: an electrode assembly for charge and discharge; the case for storing the electrode assembly; a cap plate which seals an opening of the case; and an electrode terminal which is installed on the cap plate and is electrically connected to the electrode assembly. The case includes a first curved surface part which is bent toward the center of the electrode assembly, a second curved surface part which is bent by moving away from the center, and an reinforcement plate which is attached to the first curved surface part. |
