Motor shell, motor and vehicle with motor

Abstract

The invention discloses a motor shell, a motor and a vehicle. The motor shell comprises a cylindrical inner shell, a cylindrical outer shell, a partition plate and a plurality of spoilers, the outer shell is arranged on the outer side of the inner shell in a sleeving mode, and the inner circumferential wall face of the outer shell is separated from the outer circumferential wall face of the inner shell. The partition plate is arranged between the inner shell and the outer shell and connected with the inner peripheral wall face of the outer shell and the outer peripheral wall face of the inner shell, and the partition plate, the outer peripheral wall face of the inner shell and the inner peripheral wall face of the outer shell define a cooling liquid flow channel between the inner shell and the outer shell. The multiple spoilers are arranged in at least one part of the cooling liquid flow channel at intervals, and the outer shell is provided with a cooling liquid inlet and a cooling liquid outlet which communicate with the cooling liquid flow channel. According to the motor casing provided by the embodiment of the invention, the flow state of the cooling liquid is changed through the spoilers, and the cooling effect is enhanced.

Description

technical field [0001] The invention relates to the technical field of motors for vehicles, in particular to a motor casing, a motor with the motor casing and a vehicle with the motor. Background technique [0002] As the core component of a vehicle such as a pure electric vehicle, the motor has high performance requirements, high power density, large output torque, strong overload capacity, harsh working environment, and frequent starting, acceleration, braking, etc., so it will produce A large amount of heat, if the heat cannot be dissipated in time, the temperature of the motor will rise rapidly, causing damage to the stator winding of the motor, irreversible demagnetization of the rotor permanent magnet and other hazards. [0003] In the related art, it is proposed that a coolant flow channel is usually provided in the casing of the motor, the heat generated by the motor is transferred to the casing, and the coolant in the cooling channel takes away the heat on the casin...

AI Technical Summary

Problems solved by technology

[0002] As the core component of a vehicle such as a pure electric vehicle, the motor has high performance requirements, high power density, large output torque, strong overload capacity, harsh working environment, and frequent starting, acceleration, braking, etc., so it will produce A large amount of heat, if the heat cannot be dissipated in time, it will cause the temperature of the motor to rise rapidly, causing damage to the stator winding of the motor, irreversible demagnetization of the rotor permanent magnet and other hazards

[0003] In the related art, it is proposed that a coolant flow channel is usually provided in the casing of the motor, the heat generated by the motor is transferred to the casing, and the coolant in the cooling channel takes away the heat on the casing. The cooling in the related art The liquid channel still has problems such as poor heat dissipation effect, large water pressure difference between inlet and outlet, large axial temperature difference, easy formation of scale, and easy occurrence of cross flow.

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