The invention relates to an accumulator module (10) having optimized heat dissipation, namely, an accumulator module (10) having at least one carrier (18) that is placeable in the interior of a housing (12) of the accumulator module (10) and providable with a plurality of accumulator cells (14), wherein each accumulator cell (14) in the carrier (18) is electrically contacted solely from one side, and wherein the or each carrier (18) that is equipped with accumulator cells (14) is placeable in the interior of the housing (12) in a form that thermally couples the free end faces of the accumulator cells (14) to the housing (12).