Motor controller, power assembly and vehicle

Abstract

The utility model provides a motor controller, a power assembly and a vehicle, and relates to the field of electric vehicles. The shell of the motor controller comprises a bottom shell and a cover plate, and the bottom shell and the cover plate are stacked to form a containing cavity. The accommodating cavity is used for accommodating a plurality of copper bars and a plurality of power modules, and one copper bar is electrically connected with at least one power module. The bottom shell comprises a cooling channel, the cooling channel is used for forming a groove, and at least one of the channel side wall or the channel bottom wall of the cooling channel and the groove are arranged at intervals. The groove is used for accommodating a copper bar, and the notch of the groove faces the inner side of the accommodating cavity. The groove peripheral wall and the groove bottom wall of the groove are stacked, and the end, away from the groove bottom wall, of the groove peripheral wall is connected with the channel top wall of the cooling channel. The cooling channel is formed by one part of the bottom shell, the groove containing the copper bar is immersed in the cooling liquid of the cooling channel, the temperature of the copper bar can be effectively reduced, temperature rise control over the motor controller is achieved, and the problem of over-temperature failure of devices in the motor controller is avoided.

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