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Outer-rotor composite permanent-magnetic brushless in-wheel motor of electric vehicle

A permanent magnet brushless, in-wheel motor technology, used in electric vehicles, motors, synchronous motors with static armatures and rotating magnets, etc., can solve problems such as mechanical wear, low power density of mechanical speed-increasing gearboxes, and noise. , to reduce the amount of permanent magnets, improve stability and comfort, and achieve the effect of high efficiency

Inactive Publication Date: 2010-07-28
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

[0009] Technical problem: The technical problem to be solved by the present invention is to provide a new type of outer rotor composite permanent magnet brushless hub motor device for electric vehicles, which solves the problem of low power density, mechanical wear and noise of the mechanical speed-up gearbox in the existing transmission device. question

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  • Outer-rotor composite permanent-magnetic brushless in-wheel motor of electric vehicle

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] The purpose of this invention is to provide a new type of outer rotor composite permanent magnet brushless hub motor device for electric vehicles, which solves the problems of low power density, mechanical wear and noise of the mechanical speed-increasing gearbox in the existing transmission device, and at the same time solves the problems of the traditional magnetic On the basis of the gear structure, the inner rotor of a magnetic gear is omitted, which simplifies the manufacturing process of the device, reduces the volume, weight and manufacturing cost of the generator, improves the efficiency, and eliminates the large vibration and noise. When the hub motor is used in electric vehicles, the omission of the inner rotor also reduces the unsprung mass of the vehicle and improves the stability and comfort of driving. The device will solve the problem of insuffic...

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Abstract

The invention relates to an outer-rotor composite permanent-magnetic brushless in-wheel motor of an electric vehicle, which comprises an outer rotor (1), a back shaft (7) connected with the outer rotor (1), an outer-rotor yoke (2) arranged on the inner wall of the outer rotor (1), a permanent magnet (3) circumferentially and evenly inlaid on the outer-rotor yoke (2), a magnet adjusting ring (4) connected with the permanent magnet (3) and fixed on the back shaft (7), a stator (5) arranged between the magnet adjusting ring (4) and the back shaft (7) and fixed on the back shaft (7), a winding (6) wound around the stator (5), and a bearing (8) and a rotary shaft (12) arranged on the back shaft (7), wherein the rotary shaft (12) is rotatablely connected with the back shaft (7) through the bearing (8), the back shaft (7) is simultaneously connected with the outer rotor (1) through the bearing (8), and the central axis of the rotary shaft (12) is coincident with the central axis of the outer rotor (1). The invention solves the problems of low power density, mechanical abrasion, noise production and the like of a mechanical speed increasing gear box in the traditional transmission mechanism.

Description

technical field [0001] The invention relates to a novel outer rotor composite permanent magnet brushless wheel hub motor device of an electric vehicle, which belongs to the new special motor technology. Background technique [0002] With the increasingly prominent energy shortage crisis and environmental pollution problems, electric vehicles have gradually become the research hotspots of famous automobile manufacturers and research institutions due to their remarkable advantages of high efficiency and low emission. High efficiency and high power density are their development trends. The motor drive system is its core component, and the in-wheel motor drive system is an advanced drive method for electric vehicles, which has the following significant advantages: [0003] (1) The power control is changed from hard connection to soft connection. Through electronic wire control technology, the stepless speed change of each electric wheel from zero to maximum speed and the differe...

Claims

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Application Information

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IPC IPC(8): H02K21/24H02K1/27H02K21/02
CPCY02T10/641Y02T10/64
Inventor 樊英韩学栋程明江和和邹国棠
Owner SOUTHEAST UNIV
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