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Wheel hub motor and position signal processing method thereof

A hub motor and motor shaft technology, applied in the field of electric vehicles, to achieve the effect of increasing resolution, improving accuracy, and improving control performance

Active Publication Date: 2017-10-24
NINGBO BRANCH OF JIANGSU YADEA TECHNICAL DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the price-sensitive electric wheel hub motor, the number of poles usually reaches 46 or 48 poles. At this time, the equalization process is adopted, and the electrical angle non-uniformity caused by the motor manufacturing or the installation error of the position detection device is very obvious, so it is necessary A processing method that can still provide accurate electrical angle position feedback using a low-cost position feedback device

Method used

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  • Wheel hub motor and position signal processing method thereof
  • Wheel hub motor and position signal processing method thereof
  • Wheel hub motor and position signal processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like Figure 1-4 As shown, a wheel hub motor includes a motor shaft 1, a stator 2 fixed on the motor shaft 1 and wound with a three-phase motor power line, and a rotor 3 that is sleeved on the outside of the stator 2 and pasted with N-pole magnetic steel 33. The rotor 3 has two The left end cover 31 and the right end cover 32 for installing the brake device are installed on the side by screws, the left end cover 31 is rotatably fixed on the motor shaft 1 through the left bearing 311, and the left end cover 31 located outside the left bearing 311 and the motor shaft 1 Also be provided with oil seal 312 between, play waterproof effect, right end cover 32 is rotatably fixed on the motor shaft 1 by right bearing 321, is also provided with oil seal 322 between the right end cover 32 outside right bearing 321 and motor shaft 1.

[0053] The inner side of the hub motor is located on the opposite side of the outlet hole on the stator 2, and a position detection device is instal...

Embodiment 2

[0065] like Figure 8-12 As shown, the hub motor in this embodiment differs from that in Embodiment 1 in that the position detection device is arranged outside the left end cover 31 and on the same side as the outlet hole, and the signal output cable 7 of the position detection device is connected to the motor power line Cables 6 are output independently of each other.

[0066]The position detection device includes a housing 5 installed on the motor shaft 1, a bushing 52 for installing the magnetic ring 42 and a fixing frame 51 for installing the PCB board 41 are installed in the housing 5, and the bushing 52 is positioned by passing through the notch. It is connected to the right end cover 32 by screws, and the bushing 52 and the housing 5 are sealed and connected by a sealing ring 53 . The magnetic ring 42 is glued on the bushing 52, and is integrally installed on the outside of the right end cover 32, and rotates with the right end cover 32 and the rotor. The fixing frame...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08H02K11/215H02K11/33H02P6/17
CPCH02K11/215H02K11/33H02K29/08H02P6/17
Inventor 吴海苗高超包马乾
Owner NINGBO BRANCH OF JIANGSU YADEA TECHNICAL DEV CO LTD
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