BATTERY PACK WITH EFFICIENT COOLING PATH STRUCTURE AND IMPROVED SAFETY AND VEHICLE INCLUDING THE SAME

A battery pack includes battery modules provided with a heatsink; a pack housing including a floor panel having an upper surface on which the battery modules are placed and a lower surface in which coolant channels for supplying and discharging a coolant to/from the heatsink of the battery modules, and a base plate disposed below the floor panel in a layered form; and a coolant supply pipe for selectively communicating with the coolant channels, coupled to an upper surface of the floor panel and disposed along a right side line of the floor panel; and a coolant discharge pipe for selectively communicating with the coolant channels, coupled to the upper surface of the floor panel and disposed along a left side line of the floor panel, with the coolant channels have a lower end fixedly coupled to the base plate.