Water-cooling and oil-cooling spraying composite heat dissipation power module device

A water-cooling and oil-cooling spraying composite heat dissipation power module device comprises a shell assembly, a chip assembly, a water-cooling flow channel assembly and an oil-cooling spraying assembly. The shell assembly comprises a heat dissipation base, a heat dissipation substrate, an injection molding shell and a shell cover plate. The water-cooling flow channel assembly comprises a water-cooling inlet hole and a water-cooling outlet hole. The oil cooling spraying assembly comprises an oil inlet, a spraying pipeline, a spraying head and an oil outlet. Compared with the prior art, the chip assembly is arranged on the heat dissipation substrate, one surface is subjected to water cooling heat dissipation, and the other surface is in direct contact with the oil cooling spraying assembly, so that the cooling efficiency is effectively improved. By arranging the water cooling flow channel assembly, the cooling liquid makes contact with the arrayed pin fins in the heat dissipation grooves, heat is taken aw