Battery Assembly and Battery Pack Having the same

눕혀진 상태로 배열된 복수의 배터리 셀이 제1 방향으로 적층되어 형성된 복수의 배터리 층을 포함하는 셀 적층체; 상기 셀 적층체를 냉각하기 위하여 복수의 배터리 층 사이에 배치되는 냉각플레이트; 및 상기 냉각플레이트와 상기 배터리 층을 고정시키는 접착부재;를 포함하며, 각각의 배터리 층은 상기 제1 방향에 수직인 제2 방향으로 복수의 배터리 셀이 배치된 적어도 하나의 배터리 열을 포함하는 배터리 조립체를 제공한다. The utility model provides a battery assembly and a battery pack comprising the battery assembly, the battery assembly comprises a battery unit stack body, the battery unit stack body comprises a plurality of battery layers, each battery layer comprises a plurality of battery units, the plurality of battery units are arranged to enable the maximum surfaces of the battery units to face a first direction, each battery layer comprises more than two battery columns, and the battery columns are arranged in the first direction. Each battery column comprises battery units arranged in a third direction; and one or more bus bars electrically connecting the plurality of battery cells, the battery cell stack including first and second battery columns in which the plurality of battery cells are disposed in a second direction, the electrode terminals of the first battery column and the electrode terminals of the second battery column are disposed in opposite directions with respect to a reference plane between the first battery column and the second battery column, and the one or more bus bars include lateral bus bars. The lateral bus bar connects one or more of the electrode terminals of the first battery column to one or more of the electrode terminals of the second battery column, and crosses the reference plane.