BATTERY PACK INCLUDING BATTERY MODULES STACKED IN MULTIPLE STAGES

The present invention relates to a battery pack including battery modules stacked in multiple stages, and more particularly to a battery pack including at least one battery module (100) and a pack case (200) configured to receive the battery module (100) therein, wherein the battery module (100) includes a first battery module (110) and a second battery module (120) vertically stacked above the first battery module (110), a first cooling unit (300) configured to discharge heat generated from the first battery module (110) is located between an inside upper surface of the bottom surface of the pack case (200) and the first battery module (110), and a second cooling unit (400) configured to discharge heat generated from the second battery module (120) is provided between the first battery module (110) and the second battery module (120).