Built-in and suspension integrated hub motor drive electric wheel

An in-wheel motor and integrated technology, applied in the direction of motors, electric vehicles, electric components, etc., can solve the problems of inability to realize the inner rotor structure scheme, increase the variation of the motor magnetic gap, and affect the performance of the motor torque, so as to improve the dynamics characteristics, improved vibration characteristics, and improved service life

Active Publication Date: 2012-09-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system adds elastic elements between the rim and the motor rotor, which will increase the variation of the magnetic gap of the motor and affect the torque performance of the motor; and its structural characteristics determine that a large-diameter bearing is required between the stator and the rotor of the motor. The weight of the electric wheel is increased; at the same time, only the structure of the outer rotor can be used, and the structural scheme of the inner rotor cannot be realized; therefore, the traditional wheel structure needs to be modified

Method used

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  • Built-in and suspension integrated hub motor drive electric wheel
  • Built-in and suspension integrated hub motor drive electric wheel
  • Built-in and suspension integrated hub motor drive electric wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the built-in suspension integrated hub motor-driven electric wheel of this embodiment includes a hub motor, a brake, a damping mechanism, an unequal-length double wishbone independent suspension and a wheel, and the wheel includes a rim 14, a hub 12, and a tire. 15 and so on.

[0038] The damping mechanism includes an elastic element 2-1 and an elastic element 2-2. The hub motor includes an outer stator (including iron core and windings) 1-3, an inner rotor composed of permanent magnets 1-4 and a rotor yoke 1-5, a housing 1-1, a rotor support frame 1-6, and The stator is fixed on the housing 1-6, the permanent magnets 1-4 are glued to the surface of the rotor yoke 1-5, and the rotor yoke 1-5 is connected to the rotor support frame 1-6 through threads. The housing 1-1 is connected to the joint arm 3 through the first elastic element 2-1, and is connected to the support shaft of the wheel through the elastic element 2-2, which ensures the static o...

Embodiment 2

[0045] This embodiment has the same features as the first embodiment except that the brake is an electromagnetic brake disc.

[0046] Such as figure 2 As shown, the brake is a multi-disc electromagnetic brake, including friction plate 9-16, pressure plate 9-15, yoke 9-11, armature 9-17, friction plate 9-16 and armature 9-17 are installed in The planet carrier 13-3 and rotates with the planet carrier 13-2; the pressure plate is installed on the shell 1-1; the coil 9-12 is wound in the inner cavity of the yoke 9-11, and the yoke 9-11 is installed in the In the annular cavity formed by the housing 1-1 and the ring gear 13-4; the lead wires 9-14 of the electromagnetic brake are buried in the surface of the motor housing 1-1. When braking, a current flows in the coil, and the magnetic field in the yoke attracts the armature to the end of the pressure plate, and compresses the pressure plate and the friction plate to achieve braking; when the brake is released, the current in the coil...

Embodiment 3

[0049] In this embodiment, except that the unequal-length double wishbone independent suspension is replaced with a multi-link structure, the other features are the same as the first embodiment.

[0050] Such as image 3 As shown, the multi-link structure includes a longitudinal swing arm, a lateral swing arm 31, a transverse tie rod 38, a joint arm 33 and a shock absorber, and the longitudinal swing arm, the lateral swing arm 31 and the joint arm 33 are integrally formed; The longitudinal swing arm and the yaw arm 31 are respectively indirectly connected with the frame through pins; one end of the tie rod 38 is connected with the joint arm through a ball pin 37, and the other end is indirectly connected with the rear cross beam of the frame through a bolt; shock absorber 39 The upper part of the shock absorber is provided with a shock absorber coil spring 36. The upper end of the shock absorber 39 is connected with the body, and the lower end is connected with the joint arm 33 th...

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Abstract

The invention discloses a built-in and suspension integrated hub motor drive electric wheel. The electric wheel comprises a hub motor, a brake, a wheel, a damping mechanism and a speed reduction mechanism, wherein the speed reduction mechanism comprises a sun wheel, a planet wheel, a planet carrier and a gear ring; the damping mechanism comprises a first elastic element and a second elastic element; and the hub motor is connected with a vehicle through the first elastic element, and is connected with a supporting shaft of the wheel through the second elastic element. Compared with the prior art, the electric wheel has the advantages that the electric wheel has a compact structure, is light in mass and high in power density and can be easily distributed on the wheel; the dynamic properties and the safety of the vehicle are remarkably improved; and simultaneously, the dynamic characteristics of an electric wheel driving system are effectively improved, the grounding performance of the wheel is improved, and the service life of parts is prolonged.

Description

Technical field [0001] The invention relates to a power transmission system in an electric vehicle, in particular to a built-in suspension integrated hub motor driving electric wheels. Background technique [0002] Increasing attention to environmental pollution and energy consumption has accelerated the development of electric vehicles. Among them, the obvious technical advantages of in-wheel motor-driven electric vehicles in terms of vehicle layout, active chassis control, and ease of control have attracted widespread attention from the industry and academia. Many well-known automobile companies and research institutions have successively introduced in-wheel motors. Driven concept car. [0003] The driving mode of the in-wheel motor is a distributed driving form developed according to the characteristics of the pure electric vehicle itself. Two, four or more motors are directly installed inside the wheel to directly drive the wheel to rotate. This drive structure can remove com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K7/00H02K21/24H02K1/18
CPCB60K7/0007B60K17/046B60K2007/0038B60K2007/0092B60L2220/44B60L2220/50H02K7/006H02K7/116Y02T10/64
Inventor 罗玉涛
Owner SOUTH CHINA UNIV OF TECH
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