| 摘要 |
In order to achieve the above described object, a secondary battery case according to the present invention includes: a can configured to have a lower plate and a raised side wall which extends upward from the lower plate and has an inner space of which the upper side is open; and a cap configured to have an upper plate and a dropped side wall which extends downward from the upper plate, has an inner space of which the lower side is open, and is inserted into the inner space of the can in order to isolate the inner space of the can from the outside so that the lower end of the dropped side wall is received by the upper surface of the lower plate. The present invention may include a fastening strengthening unit which surrounds a partial section of the dropped side wall with a partial section of the raised side wall so that fastening and sealing are improved when the can and the cap are fastened with each other. According to the secondary battery case of the present invention, a connection structure for the can and the cap is simplified, and thus product size can be reduced, the fastening and the sealing between the can and the cap are improved, and conductivity with an electrode assembly is improved. |
