Axial flux outer rotor hub motor

Abstract

The axial magnetic flux outer rotor hub motor comprises an outer rotor hub, a rotor disc is arranged at one end of the outer rotor hub, a rotating shaft is arranged in the center of the outer rotor hub, a plurality of permanent magnets are evenly distributed on the surface of the rotor disc in the circumferential direction, and the permanent magnets on the rotor disc form a first permanent magnet set; a hub brake pad connecting plate is further fixedly arranged in the outer rotor hub, a plurality of permanent magnets are evenly distributed on the surface of the hub brake pad connecting plate in the circumferential direction, and the permanent magnets on the hub brake pad connecting plate form a second permanent magnet set. An inner stator assembly is arranged between the rotor disc and the hub brake pad connecting plate, and the inner stator assembly comprises a stator disc and a plurality of stator iron core windings evenly distributed along the outer circle surface of the stator disc. Compared with the prior art, the motor is simple in structure and reasonable in design, an original closed structure is changed into an open structure, the stator core is convenient to fix and dissipate heat, and the outer rotor hub meets the requirement of conveniently outputting torque.

Description

technical field [0001] The invention relates to the technical field of wheel hub motors, in particular to an axial magnetic flux outer rotor wheel hub motor. Background technique [0002] The hub motor is an integrated motor that integrates the motor directly into the hub. The motor directly drives the wheels, eliminating the need for a transmission system, reducing production costs and improving transmission efficiency, which is the development direction of new energy electric vehicles. The main problem of the in-wheel motor is that the unsprung mass is relatively large, so reducing the mass and improving the torque density of the in-wheel motor becomes the main problem. The working principle of the in-wheel motor is a permanent magnet synchronous motor. The existing in-wheel motor is divided into two types: radial flux and axial flux. [0003] The existing radial flux hub motor is an outer rotor motor, and the permanent magnets are on the outer rotor. Because the gap bet...

AI Technical Summary

Problems solved by technology

But the disadvantage of this method is that the wiring of the stator core winding is in the outer circle, which blocks the heat dissipation of the stator core winding

In order to dissipate heat, the outer casing is still sealed and the internal oil cooling method is still used. The weight of the oil cooling device and the dynamic sealing problem are still unsolved.

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