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CN109301959A - A stable and efficient in-wheel motor structure - Google Patents

A stable and efficient in-wheel motor structure Download PDF

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Publication number
CN109301959A
CN109301959A CN201811355951.5A CN201811355951A CN109301959A CN 109301959 A CN109301959 A CN 109301959A CN 201811355951 A CN201811355951 A CN 201811355951A CN 109301959 A CN109301959 A CN 109301959A
Authority
CN
China
Prior art keywords
motor
pole
efficient
stable
wheel motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811355951.5A
Other languages
Chinese (zh)
Inventor
戈宝军
匡恒
王立坤
张永生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin University of Science and Technology
Original Assignee
Harbin University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin University of Science and Technology filed Critical Harbin University of Science and Technology
Priority to CN201811355951.5A priority Critical patent/CN109301959A/en
Publication of CN109301959A publication Critical patent/CN109301959A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

The present invention provides a kind of hub motor structure of stability and high efficiency, belong to technical field of motors, motor uses outer-rotor structure, the pole shoe of the rotor surface is made of non-uniform three pieces of permanent magnets, its ratio be 1:2:1, and permanent magnetism body thickness is uneven, its inner side and outer side is not at the same center of circle, the mechanical angle that two pieces of small permanent magnets therein carry out 6 ° respectively is deviated again, technical points are: every pole pole shoe of motor is divided into three sections of uneven thickness, cogging torque amplitude is significantly weakened, reduce harmonic component, torque ripple reduces, motor being capable of stable operation, since permanent magnet material price is higher, select the program can also be with effectively save cost；Magnetic shielding material is put between adjacent special-shaped magnetic pole can effectively reduce leakage field between its special-shaped magnetic pole, improve electric efficiency；The pipeline for increasing water cooling around adjacent homotype magnetic pole and stator tooth socket, can effectively inhibit the temperature of motor excessively high.

Description

A kind of hub motor structure of stability and high efficiency
Technical field
The present invention relates to technical field of motors, the hub motor structure of specifically a kind of stability and high efficiency.
Background technique
Hub motor is a kind of controllable AC synchronous motor for rapidly developing and occurring recently as electric car, is determined For son using tooth slot structure, rotor is durface mounted permanent magnet structure.The maximum feature of hub motor is exactly by power, transmission and system Dynamic device is all integrated into wheel hub, therefore the mechanical part of electric vehicle is greatly simplified, and can realize the drive of Various Complex The advantages that flowing mode, these advantages favor hub motor in electric car application.But the pole shoe in motor and fixed The unbalance stress of sub- tooth socket two sides can cause harmonic component and cogging torque larger, and harmonic wave and cogging torque can bring torque Fluctuation, causes vibration and the noise of motor, the problems such as electric car speed is unstable, inefficient and temperature is excessively high occurs, this A little disadvantages limit the development of hub motor.
Summary of the invention
Object of the present invention is to: a kind of hub motor structure of stability and high efficiency is provided, with solve existing cogging torque it is larger, Efficiency is lower and the excessively high problem of motor temperature.
In order to achieve the above objectives the technical solution adopted by the present invention is that: the present invention provides a kind of wheel hub of stability and high efficiency electricity Machine structure, which is characterized in that the motor uses external rotor permanent magnet synchronous machine, improves the rotor and stator structure of motor；Institute The pole shoe for stating rotor surface is made of non-uniform three pieces of permanent magnets, its ratio be 1:2:1, and permanent magnetism body thickness not phase Deng inner side and outer side is not on a center of circle, then two pieces of small permanent magnets therein are carried out to 6 ° of mechanical angle respectively Offset, is put into magnetic shielding material between its adjacent special-shaped magnetic pole, is put into water pipe between adjacent homotype magnetic pole；Described It slots around stator slot, is put into water pipe in its slot.
By using above-mentioned technical proposal, hub motor obtains good operation characteristic, and every pole pole shoe is divided into thickness The Distribution of Magnetic Field of uneven three sections, stator tooth and stator slot is relatively uniform very much, and cogging torque amplitude is significantly weakened, and is subtracted Small harmonic component, torque ripple reduce, and entire Stator forces are relatively uniform, motor can stable operation, while reducing and making an uproar Sound, speed is also more many than steady before, since permanent magnet material price is higher, selects the program that can also effectively reduce permanent magnetism The use of material, more efficient to the utilization of resources, price is more economical；Being put into magnetic shielding material between adjacent special-shaped magnetic pole can To effectively reduce the leakage field generated between its special-shaped magnetic pole, keeps its effective magnetic field stronger, improve the efficiency of motor；Adjacent homotype Increase the pipeline of water cooling around magnetic pole and stator tooth socket, specific heat capacity of the water when pipeline is flowed through due to water is smaller, can have The temperature of the inhibition motor of effect is excessively high.
Detailed description of the invention
Fig. 1 is a kind of hub motor structure schematic diagram of stability and high efficiency of the invention.
Fig. 2 is a kind of electric machine structure magnetic pole partial enlarged view of the wheel hub of stability and high efficiency of the invention.
In Fig. 1: 1, permanent magnet, 2, water cooled pipeline, 3, stator slot, 4, magnetic shielding material.
Specific embodiment
To make the technical means, creative features, achievement of purpose and effectiveness of the invention easy to understand, below with reference to specific Embodiment, the present invention is further explained.
If Fig. 1 is a kind of overall structure diagram of the hub motor of stability and high efficiency of the invention；Fig. 2 is of the invention one The magnetic pole partial enlarged view of the hub motor of kind stability and high efficiency；It is characterized in that, the motor uses external rotor permanent magnet synchronous machine, Improve the rotor and stator structure of motor；The pole shoe of the rotor surface is made of non-uniform three pieces of permanent magnets, ratio Example is 1:2:1, and permanent magnetism body thickness is unequal, and inner side and outer side is not on a center of circle, then small by two pieces therein Permanent magnet carry out respectively 6 ° mechanical angle offset, magnetic shielding material is put between its adjacent special-shaped magnetic pole, adjacent Homotype magnetic pole between be put into water pipe；It slots around the stator slot, is put into water pipe in its slot.
By using above-mentioned technical proposal, hub motor obtains good operation characteristic, and every pole pole shoe is divided into thickness The Distribution of Magnetic Field of uneven three sections, stator tooth and stator slot is relatively uniform very much, and cogging torque amplitude is significantly weakened, and is subtracted Small harmonic component, torque ripple reduce, and entire Stator forces are relatively uniform, motor can stable operation, while reducing and making an uproar Sound, speed is also more many than steady before, since permanent magnet material price is higher, selects the program that can also effectively reduce permanent magnetism The use of material, more efficient to the utilization of resources, price is more economical；Being put into magnetic shielding material between adjacent special-shaped magnetic pole can To effectively reduce the leakage field generated between its special-shaped magnetic pole, keeps its effective magnetic field stronger, improve the efficiency of motor；Adjacent homotype Increase the pipeline of water cooling around magnetic pole and stator tooth socket, specific heat capacity of the water when pipeline is flowed through due to water is smaller, can have The temperature of the inhibition motor of effect is excessively high.
The preferred embodiment of the present invention when described above, protection scope of the present invention are not limited to above description, Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, is regarded as protection model of the invention It encloses.

Claims (6)

1.一种稳定高效的轮毂电机结构，其特征在于：动力、传动和制动装置都整合到轮毂内，为改善电机性能和成本问题将每极的极靴改为三块不等厚的永磁体放在转子表面，为改善电机的效率较低的问题对其异型磁极之间进行改进，为改善电机的温度过高问题在其永磁体的相邻同型磁极之间和在每个定子槽的周围增加辅助槽进行改进。1. A stable and efficient in-wheel motor structure is characterized in that: power, transmission and braking device are all integrated into the hub, and the pole shoe of each pole is changed into three permanent pieces of unequal thickness for improving motor performance and cost problems. The magnets are placed on the surface of the rotor. To improve the low efficiency of the motor, the special-shaped magnetic poles are improved. In order to improve the motor's high temperature problem, it is placed between the adjacent same-shaped magnetic poles of its permanent magnets and at the end of each stator slot. Added auxiliary slots around for improvement. 2.根据权利要求1所述的一种稳定高效的轮毂电机结构，其特征在于：极靴被分为大小不相同的三等分，其比例为1：2：1。2 . The stable and efficient in-wheel motor structure according to claim 1 , wherein the pole piece is divided into three equal parts with different sizes, and the ratio is 1:2:1. 3 . 3.根据权利要求1所述的一种新型轮毂电机的结构，其特征在于：这三块是不等厚的永磁体，其内侧和外侧不是处于一个圆心上。3 . The structure of a novel in-wheel motor according to claim 1 , wherein the three pieces are permanent magnets of unequal thickness, and the inner side and the outer side are not on the same circle center. 4 . 4.根据权利要求1所述的一种稳定高效的轮毂电机结构，其特征在于：相4. A stable and efficient in-wheel motor structure according to claim 1, characterized in that: the phase 邻同型磁极之间隔着6°的机械角度。There is a mechanical angle of 6° between adjacent magnetic poles of the same type. 5.根据权利要求1所述的一种稳定高效的轮毂电机结构，其特征在于：相邻的异型磁极之间放入磁屏蔽材料。5 . A stable and efficient in-wheel motor structure according to claim 1 , wherein a magnetic shielding material is placed between adjacent special-shaped magnetic poles. 6 . 6.根据权利要求1所述的一种稳定高效的轮毂电机结构，其特征在于：相邻的同型磁极之间和每个定子槽周围的辅助槽内置入水管。6 . A stable and efficient in-wheel motor structure according to claim 1 , wherein water pipes are built into the auxiliary slots between adjacent magnetic poles of the same type and around each stator slot. 7 .
CN201811355951.5A 2018-11-15 2018-11-15 A stable and efficient in-wheel motor structure Pending CN109301959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811355951.5A CN109301959A (en) 2018-11-15 2018-11-15 A stable and efficient in-wheel motor structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811355951.5A CN109301959A (en) 2018-11-15 2018-11-15 A stable and efficient in-wheel motor structure

Publications (1)

Publication Number Publication Date
CN109301959A true CN109301959A (en) 2019-02-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811355951.5A Pending CN109301959A (en) 2018-11-15 2018-11-15 A stable and efficient in-wheel motor structure

Country Status (1)

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CN (1) CN109301959A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109980879A (en) * 2019-04-11 2019-07-05 哈尔滨理工大学 A kind of efficient durface mounted permanent magnet synchronous motor structure with cooling structure
CN112583159A (en) * 2020-12-21 2021-03-30 哈尔滨理工大学 Novel permanent magnet motor structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070052313A1 (en) * 2005-09-07 2007-03-08 Kabushiki Kaisha Toshiba Rotating electrical machine
US20090146520A1 (en) * 2007-12-11 2009-06-11 Abb Oy Permanent magnet unit for an electrical machine, a method of installing permanent magnet units and a rotor of an electrical machine
CN102361385A (en) * 2011-10-13 2012-02-22 中国船舶重工集团公司第七○五研究所 Brushless direct current motor
CN107482804A (en) * 2017-07-31 2017-12-15 江苏大学 A new surface-mounted permanent magnet synchronous motor with reduced cogging torque
US20180054094A1 (en) * 2016-08-17 2018-02-22 Atieva, Inc. Motor Cooling System Utilizing Axial Cooling Channels
CN209134168U (en) * 2018-11-15 2019-07-19 哈尔滨理工大学 The structure of a new type of in-wheel motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070052313A1 (en) * 2005-09-07 2007-03-08 Kabushiki Kaisha Toshiba Rotating electrical machine
US20090146520A1 (en) * 2007-12-11 2009-06-11 Abb Oy Permanent magnet unit for an electrical machine, a method of installing permanent magnet units and a rotor of an electrical machine
CN102361385A (en) * 2011-10-13 2012-02-22 中国船舶重工集团公司第七○五研究所 Brushless direct current motor
US20180054094A1 (en) * 2016-08-17 2018-02-22 Atieva, Inc. Motor Cooling System Utilizing Axial Cooling Channels
CN107482804A (en) * 2017-07-31 2017-12-15 江苏大学 A new surface-mounted permanent magnet synchronous motor with reduced cogging torque
CN209134168U (en) * 2018-11-15 2019-07-19 哈尔滨理工大学 The structure of a new type of in-wheel motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109980879A (en) * 2019-04-11 2019-07-05 哈尔滨理工大学 A kind of efficient durface mounted permanent magnet synchronous motor structure with cooling structure
CN112583159A (en) * 2020-12-21 2021-03-30 哈尔滨理工大学 Novel permanent magnet motor structure

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Application publication date: 20190201

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