Power battery box

The utility model provides a power battery box which comprises a battery box, a liquid cooling plate and a battery cell stack, the battery cell stack is arranged in the battery box, the liquid cooling plate is arranged at the top end of the battery box, and the power battery box is characterized in that supporting cushion blocks are arranged at four corners in the battery box and are positioned at the bottom end of the battery cell stack; the supporting cushion blocks are symmetrically arranged by taking the battery cell pile as the center; according to the utility model, the battery cell pile is erected by the supporting cushion block, and the heat dissipation holes are formed in the bottom, so that gas generated during thermal runaway of the battery cells can be exhausted from the bottom end of the battery box and can be exhausted in advance before the pressure can break through the pressure release valve, the pressure in the box body is not easy to extrude the battery cells, and the battery cells are not e