| 主权项 |
1. A battery pack, comprising:
a plurality of unit batteries, each including a pair of first side surfaces and a pair of second side surfaces that are perpendicular to the pair of first side surfaces, the unit batteries being side-by-side in a first direction such that the pair of first side surfaces face each other; a protective circuit module electrically connected to the plurality of unit batteries, the protective circuit module including a substrate and protective devices mounted on the substrate, and the protective devices being adjacent to top portions of the plurality of unit batteries; a first cap cover accommodating the protective circuit module and the top portions of the plurality of unit batteries; and a second cap cover spaced apart from the first cap cover such that the plurality of unit batteries are therebetween, the second cap cover accommodating bottom portions of the plurality of unit batteries, wherein at least one of the first cap cover and the second cap cover includes a rib extending in a region between adjacent unit batteries among the plurality of unit batteries. |
