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Hub electric driving system with torsion vibration attenuation function

An electric drive system, torsional vibration reduction technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems affecting the ride comfort and ride comfort of the vehicle, the dynamic performance of the vehicle in all directions, and the torsional vibration of the transmission system, etc. problem, to achieve the effect of improving dynamic characteristics, avoiding resonance, and easy to arrange

Inactive Publication Date: 2017-02-01
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fast response characteristics of the driving motor can easily cause prominent torsional vibration problems in the transmission system, and the chattering problem is particularly prominent when the vehicle starts at low speed, which seriously affects the ride comfort of the vehicle
At the same time, the low-speed and high-torque characteristics of electric vehicle motors are often accompanied by large torque ripples, and tire jumps and uneven loads under road excitation will cause uneven air gaps in the motors, resulting in greater torque fluctuations. The generation of torque ripple will seriously affect the dynamic performance of the vehicle in all directions

Method used

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  • Hub electric driving system with torsion vibration attenuation function

Examples

Experimental program
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Embodiment 1

[0020] Such as figure 1 The hub motor drive system with torsional vibration damping function using outer rotor inner stator hub motor shown mainly includes hub motor 1, torsional vibration damping device 2, hub 8, rim 10, tire 11, brake 16, etc. Hub motor 1 includes: rotor support frame 1-1, rotor yoke 1-2, permanent magnet 1-3, stator core and winding 1-4, stator support frame 1-5; hub motor stator core and winding 1- 4 is supported on the support shaft 4 by the stator support frame, the permanent magnet 1-3 is glued to the surface of the rotor yoke 1-2, and the rotor yoke 1-2 is connected to the rotor support frame 1-2. The rotor support frame 1-2, the driven disc hub 2-4 and the driven disc 2-1 are all provided with circumferentially distributed rectangular windows, and each window is equipped with a corresponding elastic element 2-2, so as to Realize the elastic connection between the rotor support frame 1-2 and the driven disk hub 2-4 in the circumferential direction; th...

Embodiment 2

[0023] Such as figure 2 The shown in-wheel motor drive system with torsional vibration damping. its with figure 1 The difference is that the structure of the hub motor is an inner rotor and outer stator structure, and its working principle is the same as that of the electric wheel system using an outer rotor and inner stator hub motor, so it will not be repeated here.

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Abstract

The invention discloses a hub electric driving system with a torsion vibration attenuation function. The hub electric driving system with the torsion vibration attenuation function comprises a hub motor, a torsion vibration attenuation device, a brake, a hub and the like. The torsion vibration attenuation device is composed of a rotor supporting frame, elastic elements, a driven disc, a driven disc hub and damping fins. The rotor supporting frame, the driven disc hub and the driven disc are each provided with peripherally distributed rectangular window holes with the elastic elements. The rotor supporting frame is connected with a hub motor rotor. The driven disc hub is provided with a notch corresponding to a rivet spacer bush and connected with the hub through bolts. The driven disc and the rotor supporting frame are riveted together through rivets and clamp the driven disc hub and the vibration attenuation damping fins on two sides. The brake is a disc brake. A brake disc is installed on the rotor supporting frame and rotates along with the rotor supporting frame. A brake caliper is installed on a suspension knuckle arm. Due to the arrangement of the torsion vibration attenuation device, the torque pulsation from the hub motor can be effectively attenuated, the inherent characteristics of the system can be adjusted, and the purpose of improving the dynamic characteristics of the hub electric driving system is realized.

Description

technical field [0001] The invention relates to a power transmission system of an electric vehicle driven by a wheel hub motor, in particular to a wheel hub drive system with torsional vibration damping function and a design method thereof. [0002] technical background [0003] Due to the dual pressure of energy shortage and environmental pollution, electric vehicles with high efficiency, energy saving and environmental protection have become a research hotspot in the global automobile industry. Due to its unique advantages in structure and layout, electric vehicles driven by distributed in-wheel motors are favored by the industry and have become an important direction for the development of electric vehicles. [0004] Compared with traditional vehicles, in-wheel motor-driven electric vehicles cancel components such as clutches, differentials, mechanical shifting devices, and transmission shafts, and highly integrate drive motors and deceleration mechanisms in the wheels. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K7/00H02K7/10H02K7/102
CPCB60K7/0007B60K2007/0092H02K7/10H02K7/102
Inventor 谭迪王海涛
Owner SHANDONG UNIV OF TECH
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