Abstract: A rechargeable battery pack includes a rechargeable battery, a mount frame wrapping at least part of the rechargeable battery, an outer case wrapped around the mount frame, the outer case including a first case including a first protrusion portion protruding therefrom, and a second case having a second protrusion portion protruding therefrom, the first protrusion portion being fixed to the second protrusion portion, and a protective circuit module electrically connected to the rechargeable battery.

Abstract: A battery pack including a pouch battery cell; a protective circuit module on a top side of the battery cell; a top case on the protective circuit module, the top case including a plurality of first coupling projections extending laterally outwardly therefrom; and a reinforcement sheath, the reinforcement sheath including a plurality of coupling holes therein, wherein the first coupling projections are in first coupling holes of the plurality of coupling holes, and the first coupling projections, together with the first coupling holes, couple the top case with the reinforcement sheath.

Abstract: A rechargeable battery pack includes a rechargeable battery, a mount frame wrapping at least part of the rechargeable battery, an outer case wrapped around the mount frame, the outer case including a first case having a first lead unit protruding therefrom, and a second case having a second lead unit therefrom, the first lead unit and the second lead unit being inserted into and fixed to an inside of the mount frame, and a protective circuit module electrically connected to the rechargeable battery.

Abstract: A rechargeable battery pack includes a rechargeable battery, a mount frame wrapping at least part of the rechargeable battery, an outer case wrapped around the mount frame, the outer case including a first case including a first protrusion portion protruding therefrom, and a second case having a second protrusion portion protruding therefrom, the first protrusion portion being fixed to the second protrusion portion, and a protective circuit module electrically connected to the rechargeable battery.

Abstract: A rechargeable battery pack includes a rechargeable battery, a mount frame wrapped around at least part of the rechargeable battery, an outer case wrapped around the mount frame, the outer case including a first case and a second case installed into the mount frame, and the first case including at least one coupling protrusion portion protruding from an outer side of the first case into the mount frame, and a protective circuit module electrically connected to the rechargeable battery, the protective circuit including a dummy plate protruding from an edge of the protective circuit into the mount frame, and the dummy plate being fixed to the coupling protrusion portion.

Abstract: A secondary battery that includes a battery case having a first surface; and a cover that covers at least one portion of the first surface. In the secondary battery, the cover includes at least one extension member that covers at least one portion of a second surface vertically connected to the first surface of the battery case. The second surface of the battery case is provided with a mounting portion on which the extension member is mounted, and the mounting portion is provided to be recessed inward from a peripheral portion of the mounting portion.