Expansion water tank mounting assembly for electric driving system of new energy automobile

The utility model discloses an expansion tank mounting assembly for an electric drive system of a new energy automobile in the technical field of automobile body accessories, which comprises a tank body, a protruding part and a mounting assembly, the mounting assembly comprises a support and a clamping block, the support comprises a horizontal section and a vertical section, the clamping block is driven by an adjusting unit to swing along the hinged position of the clamping block and the vertical section, and the horizontal section and the vertical section are hinged to each other. A mounting space for the protruding part to freely pass through is formed in the clamping block, a connecting bolt is vertically arranged on the clamping block in a threaded penetrating mode, a through-hole-shaped inserting hole for the connecting bolt to penetrate into one end of the mounting space to be inserted is formed in the protruding part, and a buffering unit for longitudinally buffering the protruding part is arranged in