Patent ID: 9065105
Filing Date: 2015-06-23
Classification: H01M,Y02E

Abstract:
1. A battery pack, comprising: a plurality of bare cells; a circuit module electrically connected to the plurality of bare cells; and a case accommodating the plurality of bare cells and the circuit module, the case includes a first case having one side opened to accommodate the plurality of bare cells and the circuit module and a second case covering the opened one side of the first case, the first case has a first planar part that is a bottom surface on which the plurality of bare cells are mounted, and first case side parts bent from the first planar part and extending toward the second case, the first case has corners formed by connecting neighboring first case side parts, and a first rib unit is formed at inside of at least one corner, the first rib unit comprising a plurality of longitudinally disposed ribs parallel to the first planar part, at least two of the longitudinally disposed ribs having a different shape from each other.