Multi-cooling-channel motor

Abstract

The invention relates to a multi-cooling-flow-channel motor, which comprises a casing, a stator and a rotor, the stator is provided with a winding, the casing is provided with a cooling liquid inlet, an arc-shaped flow channel and a cooling liquid outlet, the arc-shaped flow channel is arranged around the casing and is connected to a stator iron core, and the rotor is provided with a rotor flow channel. The rotor flow channel and the arc-shaped flow channel are communicated with the cooling liquid inlet and the cooling liquid outlet and correspond to the ends of the winding respectively. The cooling liquid enters the arc-shaped flow channel arranged around the casing to cool the casing and the stator core of the motor, and the cooling liquid enters the rotor flow channel to cool the rotor. When cooling liquid flows through the rotor flow channel and the arc-shaped flow channel, the cooling liquid respectively cools the end parts of the winding. In the whole flowing process of cooling liquid, the motor shell, the stator and the rotor are cooled through the arc-shaped flow channels and the rotor flow channels respectively, the temperature of the motor is effectively reduced, and the multi-cooling-flow-channel structure is beneficial for the motor to keep an efficient working state.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a motor with multiple cooling channels. Background technique [0002] As one of the core components of the new energy vehicle electric drive system, the drive motor directly affects the performance of the drive system, thereby affecting the main performance indicators of the new energy vehicle. [0003] The temperature rise control of the motor is a key problem that the electric drive system needs to face. For the new energy vehicle permanent magnet synchronous motor, there are the following technical problems: [0004] The heat dissipation efficiency of the motor casing is low; the stator winding generates heat during operation, and the temperature rise is too high, causing an increase in copper consumption and difficult heat dissipation, thereby affecting the working efficiency of the motor; permanent magnets will produce irreversible demagnetization at high te...

AI Technical Summary

Problems solved by technology

[0004] The heat dissipation efficiency of the motor casing is low; the stator winding generates heat during operation, and the temperature rise is too high, causing increased copper consumption and difficult heat dissipation, thereby affecting the working efficiency of the motor; permanent magnets will produce irreversible demagnetization at high temperatures, seriously affecting the life of the motor and security

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