Controller-integration-based wheel hub motor of electric car

Abstract

The invention relates to a controller-integration-based wheel hub motor of an electric car. The motor comprises a main motor body, a controller, and a main shaft; and the controller is installed on the main shaft. A labyrinth ring II is arranged at a motor side cover of the outer side of the main motor body; a labyrinth ring I is arranged at the position where a controller housing I and the motor side cover are connected; and because of the labyrinth ring II arranged at the motor side cover, the two labyrinth rings form a labyrinth structure. A U-shaped binding post is arranged at an internal circuit board of the controller; and a waterproof binding post electrified with heavy currents is arranged at the controller housing, wherein the waterproof binding post is used for connecting a battery input wire. The controller-integration-based wheel hub motor has the following beneficial effects: the distance between the motor and the controller is small, the motor efficiency is high, the outgoing line is short, and the cost is saved; with the combined shaft sleeve, the shaft diameter can be reduced; because slots passing through holes are formed in the shaft and the shaft sleeve, the outgoing line of the motor is led out directly by a winding copper wire, thereby reducing the wiring process and wiring terminals and saving the outgoing line; the heat radiation condition of the controller is improved and the motor reliability is enhanced; and the electricity leakage risk is reduced.

Description

technical field [0001] The invention relates to the technical field of wheel hub motors, in particular to an electric wheel hub motor with integrated controller. Background technique [0002] In-wheel motor technology is also called in-wheel motor technology. The biggest feature is that the power device, transmission device and braking device are integrated into the wheel hub, which greatly simplifies the mechanical part of the electric vehicle. [0003] In recent years, the application of foreign in-wheel motor drive technology is mainly reflected in two aspects: one is the integrated electric system developed by the R&D team represented by tire manufacturers or auto parts manufacturers; An electric vehicle jointly developed by drive system manufacturers. A large number of transmission components are omitted to make the vehicle structure simpler; for traditional vehicles, clutches, transmissions, drive shafts, differentials and even transfers are all essential, and these c...

AI Technical Summary

Problems solved by technology

[0007] (1) The distance between the motor and the controller is long, the energy loss of the wire is large, and the cost of the wire is high;

[0008] ⑵The connection between the motor and the control is not sealed well, and it is easy to leak electricity when it encounters water;

[0009] ⑶ The heat dissipation of the controller is not good, and it is prone to failure

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