Mounting structure for power battery pack of electric automobile

The invention provides a mounting structure for a power battery pack of an electric automobile. The battery pack is rectangular, has a step shape with one higher end and the other lower end and is arranged below an automobile chassis; the higher end of the battery pack is arranged in a high space below a rear-seat bottom board; the lower end of the battery pack is arranged below a front-seat cab bottom board; an air inlet longitudinally formed in the middle of the lower end of the battery pack is positioned below a central pipeline; and two exhaust fans which are transversely arranged at the higher end of the battery pack are correspondingly arranged below the rear seat. The battery pack is positioned between a body transverse beam and a body longitudinal beam; lugs are respectively arranged on two longer sides and two shorter sides of the battery pack; and lug connecting blocks are respectively arranged on the body transverse beam and the body longitudinal beam correspondingly and are fastened and assembled through bolts so as to fix the battery pack on the automobile body. On one hand, the structure solves the problem of the contradiction between volume requirement and the arrangement space of the power battery and the contradiction between the large complete-automobile modification and reduction of man-machine comfort; on the other hand, the structure meets the requirement of the battery on complete automobile collision safety.