| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack having improved uniformity in the distribution of a refrigerant.SOLUTION: The present invention relates to a battery pack having a plurality of battery cells or unit modules ('unit cells') electrically connected to each other. The unit cells are arranged vertically in a width direction (traverse direction) of the battery pack, and the unit cells are spaced apart from each other to form coolant flow channels, thereby constituting one battery module layer. A stacked structure where two or more battery module layers are arranged in a height direction (vertical direction) of the battery pack is constructed in a pack case. The battery pack includes: a coolant introduction part, through which a coolant is introduced into the two or more battery module layers simultaneously; and a coolant discharge part, through which the coolant having passed the unit cells is discharged. A part or the whole of the unit cells is arranged in the two or more battery module layers. |
