Battery pack tray and electric vehicle

Disclosed in the present invention are a battery pack tray and an electric vehicle. The battery pack tray comprises a frame body, wherein at least two placing positions which are sequentially arranged at an interval in a horizontal direction, and a locking cooperating structure are formed on the frame body; the locking cooperating structure is arranged between at least one pair of adjacent placing positions; the locking cooperating structure comprises a locking shaft, and a first connecting plate and a second connecting plate which extend in the lengthwise direction of a longitudinal beam of a vehicle body; and two ends of the locking shaft are respectively connected to the first connecting plate and the second connecting plate, and are used for cooperating with a locking mechanism to realize locking.