Automobile assembly and automobile

The utility model provides an automobile assembly and an automobile. A battery fixing device comprises a storage battery, a front frame, a backup battery, a rear frame and a battery fixing device body. Wherein the storage battery is fixed on the front frame; the battery fixing device comprises a base fixed to the rear frame and an inverted U-shaped pressing plate detachably connected with the base. The base and the inverted U-shaped pressing plate define a space for containing the backup battery, and the backup battery is limited in the height direction of the vehicle, the width direction of the vehicle and the length direction of the vehicle. According to the technical scheme, the backup battery is additionally arranged in the vehicle, and the storage battery and the backup battery are assembled at different positions of the vehicle, so that when the storage battery breaks down, electric energy can be provided through the backup battery, and the reliability of the vehicle is improved. Meanwhile, the arranged