Integral direct-drive disc-type wheel hub motor

Abstract

The invention provides an integral direct-drive disc-type wheel hub motor comprising a motor stator portion and a motor rotor portion. The rotor portion is connected to an automotive hub directly, and the stator portion is connected to the automotive suspension; the stator portion comprises a motor stator, a motor winding, a motor controller, a bearing, a temperature sensor and a magnetoelectric encoder; the rotor portion comprises a motor rotor and a permanent magnet. In addition, the motor controller is an important part of an electric automobile drive system; aiming to reduce the size and save the automobile internal space, the liquid cooling manner is adopted conventionally. The motor adopts the liquid cooling radiation manner. Thus, the integral direct-drive disc-type wheel hub motor shares a radiation structure, the power density of the electric automobile drive system can be increased, the automotive car internal space is increased, automobile sound isolation design is benefited, and the electromagnetic noise of the automotive car can be reduced.

Description

technical field [0001] The invention relates to an integrated direct-drive disc hub motor, specifically belonging to the field of drive motors for electric vehicles. Background technique [0002] With the rapid development of the automobile industry, a series of problems such as shortage of oil resources, environmental warming and climate warming have emerged. New energy vehicles represented by pure electric vehicles will surely become one of the important directions for the development of my country's automobile industry. As the only power source of pure electric vehicles, the performance of automobile electric drive system directly affects the power, stability and comfort of the vehicle. [0003] Before the 1980s, almost all vehicle traction motors were DC motors. This is because DC motors have the advantages of large acceleration traction at start and relatively simple control system. The disadvantage of DC motors is that there is a mechanical commutator. When running a...

AI Technical Summary

Problems solved by technology

Patent 201310360010.1 proposes a direct-drive switched reluctance hub motor, and patent 201310220075.6 proposes a hub direct-drive motor for forklifts, but the cooling system and the strength of the motor rotor shaft are not considered in detail. As a permanent magnet motor, the motor temperature and Vibration will seriously affect the service life of the permanent magnet, and even cause its damage

At the same time, the motor controller is separated from the motor body, so the space utilization rate is low

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