Efficient cooling motor with three independent wind-path structures

Abstract

The invention relates to a motor, in particular to an efficient cooling motor with three independent wind-path structures. The problems that an existing electric vehicle traction motor is poor in cooling capability, low in output power, small in output torque, weak in overload capacity, large in size, high in weight and high in cost are solved. The efficient cooling motor with the three independent wind-path structures comprises a base, a front end cover, a rear end cover, a stator assembly and a rotor assembly. The stator assembly comprises a stator iron core and a stator winding. The rotor assembly comprises a rotary shaft and a rotor iron core. An outer-layer axial air gap is reserved between the surface of the inner circle of the base and the surface of the outer circle of the stator iron core, and an inner-layer axial air gap is reserved between the surface of the inner circle of the stator iron core and the surface of the outer circle of the rotor iron core. An axial air duct is formed in the end face of the rotor iron core in a penetrating through mode, a centrifugal fan is installed in an inner cavity in the front portion of the base, an air channel is installed on the surface of the outer circle of the rear portion of the base, and an axial flow fan is installed in an inner cavity of the air channel. The efficient cooling motor with the three independent wind-path structures is suitable for electric vehicles.

Description

technical field [0001] The invention relates to a motor, in particular to a motor with an independent three-air-path structure for high-efficiency cooling and heat dissipation. Background technique [0002] The core of an electric vehicle is the power drive system, which includes a controller and a traction motor. The particularity of electric vehicles in terms of operating mode, operating environment, and technical performance requires that the traction motor has high output power, large output torque, strong overload capacity, small moment of inertia, strong cooling and heat dissipation capacity, small size, light weight, and low cost. Features. Currently, traction motors applied to electric vehicles mainly include self-ventilated motors and water-cooled motors. Among them, the self-ventilated motor can directly dissipate the internal heat of the motor through its internal centrifugal fan, but the self-ventilated motor is limited by the capacity of the internal centrifug...

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Problems solved by technology

[0003] In order to solve the problems of weak cooling and heat dissipation capacity, low output power, small output torque, weak overload capacity, large volume, heavy weight and

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