Rotational molding double-cavity water tank for hydrogen energy automobile

The utility model discloses a rotational molding double-cavity water tank for a hydrogen energy automobile, which comprises a rotational molding tank body, a partition plate is arranged in the tank body to divide the tank body into two independent cavities, and the walls of the two cavities are respectively provided with a filling port, a liquid outlet, a liquid return port and a sensor mounting hole. An installation structure is arranged on the box body and used for fixing the box body and a vehicle body, the liquid level sensor is installed on the sensor installation hole, and a filling port cover is arranged on the filling port. Common cooling liquid and deionized cooling liquid are stored in the cavity I and the cavity II of the box body, the reinforcing groove is formed in the box body, and all the openings are reasonably arranged, so that the water tank better meets the space requirement of a vehicle body and is more convenient to install, the manufacturing cost is reduced, and meanwhile, the liquid lev