Wheel hub motor and position signal processing method thereof

Abstract

The invention discloses a wheel hub motor. The wheel hub motor comprises a motor shaft, a stator, a rotor and a position detection device; the position detection device comprises a PCB (printed circuit board) and a magnetic ring; the PCB is provided with a plurality of magnetic induction components; when the magnetic ring is stationary or rotating, the magnetic induction components can sense the change of the magnetic flux of the magnetic ring; the rotor is provided with a left end cover and a right end cover which is used for installing a brake assembly; and the position detection device is arranged inside the right end cover. The invention also discloses an externally-arranged wheel hub motor; the rotor of the external wheel hub motor is provided with a left end cover and a right end cover which is used for installing a brake assembly; a motor shaft at the external side of the left end cover is provided with a housing; and a position detection device is arranged in the housing. The invention also discloses a position signal processing method of the wheel hub motor. The wheel hub motor of the invention has the advantages of simple structure, simple and reliable production process, reliable vibration resistance, low performance requirements for a controller and high accuracy. According to the wheel hub motor, position feedback avoids a heat source, mechanical angle and electrical angle output selections are provided, and the requirements of different control interfaces can be satisfied.

Description

technical field

[0001] The invention belongs to the field of electric vehicles, and in particular relates to a hub motor applied to electric bicycles, electric motorcycles and electric tricycles and a position signal processing method thereof. Background technique

[0002] Electric bicycles and electric motorcycles are light and green means of transportation that are widely popular in the market at present. The market has reached hundreds of millions of vehicles, and the increment of tens of millions per year is developing rapidly. With the popularization of the number, people also put forward higher demands on the performance and functions of electric vehicles, such as the emergence of concepts such as smart electric vehicles and Internet electric vehicles. Electric vehicle controller control technology is also gradually developing from 120-degree square wave control to sine wave vector control. However, the driving wheel hub motor, which is the core component of electric ...

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