High-power brushless electronic water pump

The utility model discloses a high-power brushless electronic water pump which comprises an outer shell and an upper cover, a spacer bush sealing assembly is further arranged in the outer shell, a rotor impeller assembly is rotationally installed in the spacer bush sealing assembly, a fluid cavity is formed between the spacer bush sealing assembly and the upper cover, and a stator assembly is installed between the spacer bush sealing assembly and the outer shell. A cooling ring sleeve is arranged on a bottom plate of the shell, a fluid cooling cavity is formed, a fluid flowing gap is formed between the spacer bush sealing assembly and the rotor impeller assembly, the rotor impeller assembly comprises a center shaft, an impeller and a rotor body, the impeller is fixed to the upper end of the center shaft, a center hole is formed in the center shaft, and the rotor body is arranged in the center hole. The central hole communicates the fluid cooling chamber with the fluid chamber. According to the electronic wate