Battery pack fixing device and electric vehicle

The utility model provides a battery pack fixing device and an electric vehicle, and the device comprises a bottom layer support which is fixed on a vehicle frame; the support frame is fixedly arranged at the top of the bottom-layer bracket; and a plurality of battery pack fixing frames, the battery pack fixing frames are arranged on the supporting frame, the battery pack fixing frames are arranged at intervals layer by layer in the height direction of the supporting frame, battery pack containing spaces are arranged between the battery pack fixing frame on the bottommost layer and the bottomlayer support and between every two adjacent battery pack fixing frames, and battery pack fixing structures are arranged on the battery pack fixing frames and the upper bottom layer support. The utility model discloses a battery pack fixing device. The battery pack fixing frames are arranged layer by layer at intervals, the battery pack containing spaces are formed between the adjacent battery pack fixing frames and betwe