Phase change cooling and liquid cooling combined module structure suitable for square battery cell

The utility model discloses a phase change cooling and liquid cooling combined module structure suitable for a square battery cell. The module structure comprises a battery box, the square battery cell, a liquid cooling plate, a phase change material plate, a liquid cooling pipe and a liquid supply assembly, the square battery cells are stacked in N layers in the battery box, and the large side surface of each square battery cell is a stacking surface; the liquid cooling plates are arranged on the outer side surfaces of the N layers of square battery cells; a phase change material plate is arranged on each of the top surface and the bottom surface of each layer of square battery cell, and a plurality of liquid cooling pipes are uniformly distributed in each phase change material plate; the liquid supply assembly comprises a liquid supply main pipe I and a liquid supply main pipe II; the first liquid supply main pipe is used for providing cooling liquid for the liquid cooling plate. The second liquid supply ma