Integrated two-cavity expansion water tank assembly for new energy lightweight automobile

The utility model discloses an integrated two-cavity expansion water tank assembly for a new energy light automobile, which comprises an expansion water tank assembly and an expansion water tank support assembly, the expansion water tank assembly comprises an expansion water tank body, a cooling liquid injection port, a cooling liquid outlet, a first degassing port, a second degassing port, a liquid level sensor and a pressure cover assembly, the expansion water tank body is provided with a first cavity and a second cavity which are mutually independent and have a heat insulation spacing distance, and the first cavity and the second cavity are respectively provided with an independent cooling liquid injection port, an independent cooling liquid outlet, an independent degassing port I, an independent degassing port II, a liquid level sensor and a pressure cover assembly; the expansion water tank support assembly comprises a square pipe beam support, an expansion water tank bracket and a Z-shaped support, and t