Patent ID: 8623536

Claim:
A battery module, comprising: a plurality of unit batteries, each unit battery having an electrode group and a battery casing; a plurality of partitioning walls, each partitioning wall coupled to a respective unit battery and including a plurality of protrusions protruding in a first direction normal to a largest surface of the partitioning wall, the plurality of unit batteries and partitioning walls being arranged in an alternating array, wherein each partitioning wall has a smaller size as compared to the respective unit battery, at least a length of the partitioning wall being smaller than a length of the unit battery, the lengths of the partitioning wall and unit battery being measured along a second direction perpendicular to the first direction; and at least one fixing member coupled to each battery unit and to a corresponding partitioning wall, a first surface of the fixing member contacting the battery unit and a second surface of the fixing member contacting the partitioning wall, the first and second surfaces of the fixing member being in different planes, wherein the at least one fixing member has a width that is larger than a width of the protrusions of the partitioning wall and extends beyond the protrusions of the partitioning wall along the first direction, the widths of the fixing member and protrusions being measured along the first direction.