| 摘要 |
A battery pack is provided to enhance the engaging portion of a case without the degradation of appearance quality and to increase the reusing rate of the case. A battery pack includes a battery cell; the first case(320) which accommodates the battery cell due to opened box shape, and is formed with a plurality of coupling protrusion(328) at one side; and the second case(340) which is combined with the first case and is formed with a plurality of coupling holes(348) to couple a plurality of coupling protrusion. The coupling of the first case and the second case is performed by coupling a plurality of coupling protrusions with a plurality of coupling holes. The circumference of a plurality of coupling holes is more thickly formed than elsewhere. |
