BATTERY UNIT ARRANGEMENT STRUCTURE FOR VEHICLE AND VEHICLE

A battery unit (6) arrangement structure for a vehicle includes a dash panel vertical wall portion (4) that separates a vehicle interior (1) from an engine compartment (11), a floor panel (2) that forms the floor surface of the vehicle interior (1), and a curved corner portion (5) that connects the lower end of the dash panel vertical wall portion (4) and the front end of the floor panel (2) to each other. The battery unit (6) is mounted on the corner portion (5) in front of the passenger seat with the upper surface of the battery unit (6) inclined downward toward the vehicle rear so that the rear end of the battery unit (6) is lower than the front end of the battery unit (6), and the battery unit (6) is covered, from above, with a cover member (8) that is inclined downward toward the vehicle rear so that the rear end of the cover member (8) is lower than the front end of the cover member (8).