WO2022179628A1 - Moteur polygonal - Google Patents

Moteur polygonal Download PDF

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Publication number
WO2022179628A1
WO2022179628A1 PCT/CN2022/078057 CN2022078057W WO2022179628A1 WO 2022179628 A1 WO2022179628 A1 WO 2022179628A1 CN 2022078057 W CN2022078057 W CN 2022078057W WO 2022179628 A1 WO2022179628 A1 WO 2022179628A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
excitation
motor
casing
rotor
Prior art date
Application number
PCT/CN2022/078057
Other languages
English (en)
Chinese (zh)
Inventor
许宁宁
刘湘东
贺海亮
刘培海
Original Assignee
宁波恒帅股份有限公司
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 宁波恒帅股份有限公司 filed Critical 宁波恒帅股份有限公司
Publication of WO2022179628A1 publication Critical patent/WO2022179628A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the invention relates to a polygonal motor, in particular to a magnetizing method of the motor excitation magnet.
  • the shell of the traditional motor usually adopts a circular structure, and the space utilization rate is not high.
  • an anti-rotation device needs to be installed, so there is a certain waste of space.
  • the most effective way is to design the motor shape as a square or polygon.
  • the technical problem to be solved by the present invention is to provide a polygonal motor with higher power density in view of the above-mentioned shortcomings of the prior art.
  • a polygonal motor which includes a casing, an excitation magnet and a rotor
  • the casing is provided with at least four sides with the same number as the excitation magnets, and chamfers are arranged between the sides.
  • the rotor is installed in the center of the casing, and the outer circular surface of the rotor forms an air gap with the inner arc of the field magnet.
  • the lines are consistent, the direction of the magnetic field lines of the field magnets is symmetrically distributed to both sides of the magnet center line based on the magnet center line, and the magnetic field lines form an included angle with the field magnet center line.
  • the included angle is 10° to 45°, preferably 18°.
  • the inner surface of the chamfered surface of the casing is a plane
  • the outer surface of the excitation magnet is also a plane
  • the chamfered surface and the side surface are connected by a transition arc.
  • the outer side of the excitation magnet is attached and fixed to the inner side of the casing.
  • an outer arc is arranged on the outer surface of the field magnet, and a gap for accommodating an adhesive is formed between the outer side surface of the field magnet and the inner side surface of the casing, and the field magnet is fixed on the inner side surface of the case through the adhesive agent.
  • the field magnet is of a split structure, separated along the center line, and consists of the left part of the field magnet and the right part of the N-pole field magnet, which is convenient for manufacture.
  • the excitation magnets are N-pole excitation magnets and S-pole excitation magnets, and the N-pole excitation magnets and the S-pole excitation magnets are alternately installed on the inner side surface of the casing.
  • the present invention has the advantages that: by forming an angle between the magnetic field line of the excitation magnet and its center line, the power density of the motor can be further improved, so that the motor power can meet the requirements of the limited installation space. Requirements.
  • FIG. 1 is a cross-sectional view of a conventional square motor.
  • FIG. 2 is a schematic cross-sectional view of a polygonal motor according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram of the magnetic field lines and the direction of magnetization of the integral field magnet in Embodiment 1 of the present invention.
  • FIG. 4 is a distribution diagram of magnetic field lines of a polygonal motor with integral field magnets according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic cross-sectional view of a polygonal motor with a separate excitation magnet according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of the magnetic field lines and the direction of magnetization of the split-type excitation magnet in Embodiment 2 of the present invention.
  • FIG. 7 is a distribution diagram of magnetic field lines of a polygonal motor with a split field magnet in Embodiment 2 of the present invention.
  • FIG. 8 is a reverse voltage diagram of a conventional quadrilateral motor.
  • FIG. 9 is a reverse voltage diagram of the polygonal motor according to the first embodiment of the present invention.
  • a quadrangular motor includes a casing 10 , an N-pole field magnet 20 , an S-pole field magnet 30 and a rotor 40 .
  • the casing 10 is provided with four side surfaces 101 with the same number of poles as the field magnets, and a chamfered surface 103 is provided between each side surface 101.
  • the chamfered surface 103 and the side surfaces 101 are connected by a transition arc 102.
  • the N-pole field magnet 20 and S-pole field magnets 30 are alternately installed on the chamfered inner side 104 of the casing 10, the outer sides 202 of the N-pole field magnets 20 and the S-pole field magnets 30 are attached to the inner side 105 of the casing 10, and the rotor 40 is installed in the center of the casing 10 , and the outer circular surface 401 of the rotor 40 forms an air gap with the inner arcs 201 of the N-pole field magnet 20 and the S-pole field magnet 30 .
  • the N-pole field magnet 20 is provided with an inner arc 201, which forms an air gap with the outer circular surface 401 of the rotor 40.
  • the outer sides 202 are respectively provided on both sides to fit with the inner side 105 of the casing 10. Corner surface 205, the chamfered surface 205 and the outer side surface 202 are connected by a transition arc 204, the chamfered surface 205 is attached to the chamfered inner side surface 104 of the casing 10, and the outer side surface 202 is also provided with an outer arc 203, which is connected with the casing 10.
  • the gaps formed between the inner side surfaces 105 are used for accommodating the adhesive to fix the excitation magnet in the casing.
  • the center line C of the above-mentioned N-pole field magnet 20 is consistent with the radial line R of the rotor, and the direction of the magnetic field line of the field magnet is symmetrically distributed to both sides of the magnet center line based on the magnet center line C.
  • the angle between the direction of the magnetic field line of the above-mentioned N-pole field magnet 20 and the center line C of the N-pole field magnet 20 is L, and the direction of the magnetic field line is determined by the magnetization direction, which is from the center of the inner arc 201 outward, and is aligned with the N-pole field magnet.
  • the included angle of the center line C is L, and the included angle L in this embodiment is 18°.
  • the S-pole excitation magnet 30 and the N-pole excitation magnet 20 have the same structure as the N-pole excitation magnet 20 except that the direction of the magnetic field lines are opposite, that is, the magnetization direction is opposite, and are fixed on the outer casing in the same way.
  • the magnetic lines of force of the N-pole excitation magnets 20 of the quadrilateral motor enter the side 101 of the casing 10 in two directions along the magnetizing direction, and each magnetic line of force flows through the side 101 of the casing 10 and then flows to two different
  • the S-pole field magnet 30 passes through and flows to the air gap along the magnetizing direction of the S-pole field magnet 30, passes through the air gap and enters the rotor 40, flows through the rotor 40 and then passes through the air gap again, returning to the original N-pole field magnet 20, to form a complete magnetic field line loop distribution.
  • the electromagnetic power P reverse voltage ⁇ working current generated by the motor.
  • the present invention also studies the angle L between the direction of the magnetic field line of the exciting magnet and the direction of the center line.
  • the variation diagram of the motor back voltage and time in this embodiment is shown in Figure 9, and the relationship between the variation of the angle L and the motor back voltage is shown in the table 1. It can be seen from Table 1 that the included angle is preferably 10° to 45°, preferably 18°.
  • Table 1 The relationship between the angle between the magnetic field lines of the excitation magnet and the motor back voltage
  • the excitation magnet is a split type, consisting of left and right parts, other structures are exactly the same as the motor of the first embodiment.
  • the N-pole excitation magnet 20 is composed of an N-pole excitation magnet left portion 20A and an N-pole excitation magnet right portion 20B
  • the S-pole excitation magnet 30 is composed of a S-pole excitation magnet left portion 30A and a S-pole excitation magnet right portion 30B.
  • the above-mentioned N-pole excitation magnet 20 is provided as a split structure, separated along the center line C, and formed by bonding the left portion 20A of the N-pole excitation magnet and the right portion 20B of the N-pole excitation magnet, and the magnetization direction is from the center of the inner arc 201 outward. , and form an included angle L with the center line C of the N-pole field magnet 20 .
  • This structure is more convenient for magnetizing the left part 20A of the N-pole field magnet and the right part 20B of the N-pole field magnet.
  • the above-mentioned S-pole excitation magnet 30 is set as a split structure, separated along the center line C, and formed by bonding the left part 30A of the S-pole excitation magnet and the right part 30B of the S-pole excitation magnet, and the magnetization direction is toward the center of the inner arc,
  • An angle L is formed with the center line C of the S-pole field magnet 30, and this structure is more convenient for magnetizing the left part 30A of the S-pole field magnet and the right part 30B of the S-pole field magnet.
  • Fig. 7 The direction of the magnetic lines of force of the above-mentioned motor is shown in Fig. 7, which is exactly the same as that of the first embodiment.
  • the motor casing of the present invention can also have more sides, such as six sides, eight sides, etc., and the corresponding connecting chamfered surfaces are also six or eight, etc., and the number of exciting magnets also changes accordingly.
  • azimuth characters such as the inner and outer position indicating the direction mentioned in this embodiment and this application document and the words containing the azimuth character are only used for the convenience of description, and are only for the specific direction determined during the description. It does not constitute a limitation on the content and protection scope of the present invention.

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

Abstract

La présente invention concerne un moteur polygonal comprenant un boîtier, des aimants d'excitation et un rotor. Le boîtier est pourvu d'au moins quatre surfaces latérales identiques au nombre des aimants d'excitation, une surface de chanfrein est disposée entre chaque paire de surfaces latérales adjacentes, et les surfaces latérales sont reliées au moyen de la surface de chanfrein ; le rotor est monté au centre du boîtier, et la surface de cercle externe du rotor et l'arc interne de chaque aimant d'excitation forment un entrefer ; chaque aimant d'excitation est monté au niveau d'un chanfrein, la ligne centrale d'aimant de chaque aimant d'excitation est cohérente avec la ligne de rayon du rotor, la direction de la ligne magnétique de chaque aimant d'excitation est répartie symétriquement des deux côtés de la ligne centrale d'aimant avec la ligne centrale d'aimant comme référence, et un angle inclus est formé entre la ligne magnétique et la ligne centrale de chaque aimant d'excitation. Un angle inclus est formé entre la ligne magnétique de chaque aimant d'excitation et sa ligne centrale, de telle sorte que la densité de puissance du moteur peut être encore améliorée, et par conséquent, la puissance du moteur peut satisfaire aux exigences d'utilisation lorsque l'espace de montage est limité.
PCT/CN2022/078057 2021-02-26 2022-02-25 Moteur polygonal WO2022179628A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110217712.9 2021-02-26
CN202110217712.9A CN112803651A (zh) 2021-02-26 2021-02-26 一种多边形电机

Publications (1)

Publication Number Publication Date
WO2022179628A1 true WO2022179628A1 (fr) 2022-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/078057 WO2022179628A1 (fr) 2021-02-26 2022-02-25 Moteur polygonal

Country Status (2)

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CN (1) CN112803651A (fr)
WO (1) WO2022179628A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112803651A (zh) * 2021-02-26 2021-05-14 宁波恒帅股份有限公司 一种多边形电机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010004624A (ja) * 2008-06-18 2010-01-07 Mabuchi Motor Co Ltd Ｄｃモータ
CN202424335U (zh) * 2011-11-25 2012-09-05 广东肇庆爱龙威机电有限公司 一种紧凑型轻量化的四极方形永磁直流电机
CN203039468U (zh) * 2012-12-26 2013-07-03 上海胜华波汽车电器有限公司 增强型高效永磁电机
CN104716811A (zh) * 2015-02-09 2015-06-17 北京理工大学 开关磁通弧形永磁电机
CN206379781U (zh) * 2016-12-30 2017-08-04 广州汽车集团零部件有限公司 一种轻量化紧凑型八边形四极电机
CN208353117U (zh) * 2018-06-05 2019-01-08 始兴县标准微型马达有限公司 一种多边形结构的小型电机
CN110943557A (zh) * 2019-11-14 2020-03-31 湖南大学 一种Halbach阵列永磁同步电机
CN112803651A (zh) * 2021-02-26 2021-05-14 宁波恒帅股份有限公司 一种多边形电机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010004624A (ja) * 2008-06-18 2010-01-07 Mabuchi Motor Co Ltd Ｄｃモータ
CN202424335U (zh) * 2011-11-25 2012-09-05 广东肇庆爱龙威机电有限公司 一种紧凑型轻量化的四极方形永磁直流电机
CN203039468U (zh) * 2012-12-26 2013-07-03 上海胜华波汽车电器有限公司 增强型高效永磁电机
CN104716811A (zh) * 2015-02-09 2015-06-17 北京理工大学 开关磁通弧形永磁电机
CN206379781U (zh) * 2016-12-30 2017-08-04 广州汽车集团零部件有限公司 一种轻量化紧凑型八边形四极电机
CN208353117U (zh) * 2018-06-05 2019-01-08 始兴县标准微型马达有限公司 一种多边形结构的小型电机
CN110943557A (zh) * 2019-11-14 2020-03-31 湖南大学 一种Halbach阵列永磁同步电机
CN112803651A (zh) * 2021-02-26 2021-05-14 宁波恒帅股份有限公司 一种多边形电机

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