Nut box for fixing battery and vehicle

The utility model relates to the technical field of electric automobile battery installation, in particular to a nut box for fixing a battery and a vehicle, the nut box comprises a first box body, a nut plate is arranged in the first box body, a bolt penetrating through the first box body, a front floor and a battery pack shell is in threaded connection with the interior of the nut plate, and the first box body and the front floor are in threaded connection. The first box body is provided with a notch, the top of the second box body is open, the second box body is embedded in the notch in the seat cross beam and is fixed on the upper surface of the front floor, the peripheral side wall of the second box body is connected with the seat cross beam, the first box body is fixed in the second box body, and the bottom of the second box body is provided with a through hole for a bolt to penetrate through. The second box body with the top open is adopted, the second box body is arranged on the upward side of the fron