| 主权项 |
1. A rechargeable battery, comprising:
an electrode assembly that undergoes charging and discharging; a case containing the electrode assembly; a terminal electrically connected to the electrode assembly and protruding from an interior of the case to an exterior of the case; a lead tab electrically connecting the terminal and the electrode assembly; and an insulating pack that insulates the electrode assembly from the case, the electrode assembly being disposed in the insulating pack and the insulating pack being disposed in the case such that the insulating pack is between the electrode assembly and the case, the insulating pack including an indentation portion and a groove positioned to correspond to the indentation portion and to be insertion-coupled to the indentation portion, a receiving portion having an opening at one side, configured to receive the electrode assembly, and a covering portion covering the opening, wherein: the case includes a space that accommodates the insulating pack and the electrode assembly, the case having one open end, the case is coupled to a cap plate at the one open end of the case, the cap plate hermetically sealing the case, and the covering portion includes: a first cover that extends from one edge of the opening in a direction of the terminal and that includes a plurality of the indentation portions disposed in a lengthwise direction; and a second cover that extends from another edge of the opening at a position facing the first cover, and including a plurality of the grooves disposed at a position facing the indentation portions and insertion-coupled to the indentation portions. |
