Patent ID: 8859131

Claim:
A battery module, comprising: a pair of end plates facing each other; a plurality of battery units arranged in a first direction between the end plates; at least one first restraint member extending along a first side of the plurality of battery units, the at least one first restraint member being coupled to the end plates; at least one second restraint member extending along a second side of the plurality of battery units, the at least one second restraint member being coupled to the end plates and being disposed opposite to the first restraint member; a first coupling structure, the first coupling structure coupling one of the end plates to the at least one first restraint member; a second coupling structure, the second coupling structure coupling the one end plate to the at least one second restraint member, wherein the first coupling structure is asymmetrical with respect to the second coupling structure about a central line of the one end plate such that the first coupling structure couples the one end plate to the at least one first restraint member at a first height from a bottom of the one end plate and the second coupling structure couples the one end plate to the at least one second restraint member at a second height from a bottom of the one end plate, wherein the second height is different from the first height, and wherein the central line extends in a plane of the one end plate and is equidistant from the first restraint member and the second restraint member, and wherein a first lateral edge of the one end plate that is coupled with the first restraint member is free of any coupling structure at the second height.