Heat dissipation device for electric automobile

The invention discloses a heat dissipation device for an electric automobile, which comprises an upper shell and a lower shell, and a cavity is formed when the upper shell and the lower shell are closed. One side of the cavity is provided with a first flow channel communicated with the water inlet, the other side of the cavity is provided with a second flow channel communicated with the water outlet, and the axial center line of the first flow channel coincides with the axial center line of the second flow channel. A splitter plate is arranged on the face, facing the lower shell, of the upper shell and/or on the face, facing the upper shell, of the lower shell and close to the end, facing the second flow channel, of the first flow channel. The splitter plate is perpendicular to the length direction of the first flow channel, and when the upper shell and the lower shell are closed in a covering mode, the splitter plate guides water flow to the two side walls of the cavity. According to the cooling water channe