Sealed battery pack

A sealed battery pack wherein a plurality of cells each accommodating therein elements for electromotive force are housed in prismatic cell cases, of which openings are sealed, comprising:

• a cooling box with an upper open end for housing the plurality of cells connected in series and arranged in parallel;
• an integral lid for sealing the upper open end of the cooling box and the openings of the cell cases;
• first coolant passages formed between inner walls on both sides of the cooling box in a direction in which the cells are arranged and opposite side walls of the plurality of cells;
• and
• second coolant passages formed between the cell cases of adjacent cells, wherein the first coolant passages and the second coolant passages communicate with each other, wherein the first coolant passages and the second coolant passages that communicate with the first coolant passages are formed by means of a plurality of partitions that are formed on the inner walls on both sides of the cooling box in the direction in which the cells are arranged at a pitch space corresponding to the width of each cell, and wherein latching members are formed such as to extend within the second coolant passages between cell cases, protruding from the inner walls of the cooling box on both sides in the cell arrangement direction, and protrusions that engage with the latching members are provided protruding from the cell cases.