CN112953061A - Dual-radial combined magnetic pole permanent magnet driving motor - Google Patents

Dual-radial combined magnetic pole permanent magnet driving motor Download PDF

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Publication number
CN112953061A
CN112953061A CN202110278754.3A CN202110278754A CN112953061A CN 112953061 A CN112953061 A CN 112953061A CN 202110278754 A CN202110278754 A CN 202110278754A CN 112953061 A CN112953061 A CN 112953061A
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CN
China
Prior art keywords
permanent magnet
rectangular
magnet steel
rotor
rectangular groove
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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.)
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Application number
CN202110278754.3A
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Chinese (zh)
Inventor
耿慧慧
张学义
胡文静
史立伟
刘从臻
杜钦君
王爱传
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Shandong University of Technology
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Shandong University of Technology
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Priority to CN202110278754.3A priority Critical patent/CN112953061A/en
Publication of CN112953061A publication Critical patent/CN112953061A/en
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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

Abstract

The invention provides a double-radial combined type magnetic pole permanent magnet driving motor, which belongs to the technical field of electric vehicle motor electric appliances and consists of a rotor, a stator, an end cover and a rotating shaft, wherein first rectangular permanent magnet steel is radially arranged on the outer side of a rotor iron core, a second rectangular permanent magnet steel fixed by a pole shoe, a screw and a square iron rivet is arranged in the middle of the outer end of the first rectangular permanent magnet steel, and divides a magnetic circuit of the first rectangular permanent magnet steel into a left path and a right path, so that the problem that the magnetic field of the first rectangular permanent magnet steel is concentrated in the center of a magnetic pole, and the driving motor pulsates due to larger static magnetic force generated in the center of the magnetic pole is avoided, and the pole shoe is additionally arranged at the outer end of the second rectangular.

Description

Dual-radial combined magnetic pole permanent magnet driving motor
Technical Field
The invention provides a biradial combined type magnetic pole permanent magnet driving motor, and belongs to the technical field of electric automobile motor appliances.
Background
The surface-mounted permanent magnet driving motor adopted on the existing electric automobile has the advantages that the permanent magnet steel surface is mounted on the excircle of a rotor core, the main air gap on the straight surface of the permanent magnet steel is reduced, the magnetic leakage is reduced, the using amount of the permanent magnet steel is less, the reliability of the structure is weak, the permanent magnet magnetic field is mainly concentrated in the center of a magnetic pole, the magnetic field intensity in the center of the magnetic pole is large, the magnetic field intensity on two sides of the magnetic pole is weak, and therefore large static magnetic force is generated in the center of the magnetic pole, and. Therefore, more advanced products are yet to be developed.
Disclosure of Invention
The invention aims to provide a double-radial combined type magnetic pole permanent magnet driving motor which can overcome the defects and is formed by combining built-in radial permanent magnet steel and radial permanent magnet steel fixed by a pole shoe, wherein a magnetic circuit of the built-in radial permanent magnet steel is divided into two paths by utilizing the radial permanent magnet steel fixed by the pole shoe, so that the low torque pulsation, the high reliability and the high power density of the magnetic pole center static magnetic force are reduced, and the technical contents are as follows:
the biradial combined type magnetic pole permanent magnet driving motor consists of a rotor, a stator, an end cover and a rotating shaft, and is characterized in that: the driving motor rotor is a double-radial combined magnetic pole permanent magnet rotor;
the double-radial combined type magnetic pole permanent magnet rotor consists of a first rectangular permanent magnet steel, a rotor iron core, a pole shoe, a second rectangular permanent magnet steel, a screw, a square iron rivet, a right-angle trapezoidal magnetic isolation air gap and a rotating shaft, wherein even numbers of rectangular grooves which are close to the excircle of a rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the central lines in the width direction of the rectangular grooves penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with the right-angle trapezoidal magnetic isolation air gap penetrating through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angle side of the right-angle trapezoidal magnetic isolation air gap at the left end, the central line in the length direction of each rectangular groove and the median line of the right-angle trapezoidal magnetic isolation air gap at the left end are on the same straight line, the right side of the rectangular groove is communicated with the waist of the right-angle side of the right-end right-angled trapezoid magnetic isolation air gap, the central line of the length direction of the rectangular groove and the median line of the right-end right-angled trapezoid magnetic isolation air gap are on the same straight line, the width of the rectangular groove is 0.6mm larger than the length of the waist of the right-angle side of the right-end right-angled trapezoid magnetic isolation air gap, two adjacent right-angled trapezoid magnetic isolation air gaps are not communicated, the length of the part which is not communicated is 1.5mm, a rectangular groove which penetrates through the thickness of a rotor sheet is arranged in the middle of the outer end of the rectangular groove on the rotor sheet, the outer side of the rectangular groove is communicated with the excircle of the rotor sheet, the length of the rectangular groove is larger than the length of a pole shoe and is larger than the length of second rectangular permanent magnet steel, the width of the rectangular groove is equal to the sum of the thickness of the pole shoe and the thickness of the second rectangular, the side length of the square groove is larger than the diameter of the screw;
laminating the rotor punching sheets in a mode that the burr direction faces to the same direction, riveting the laminated rotor punching sheets through a square iron rivet to form a rotor core, drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor core, processing a screw hole penetrating through the square iron rivet in the center of the square iron rivet, enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet to be on the same straight line, placing a first rectangular permanent magnet steel in the rectangular groove, arranging the outer side of the first rectangular permanent magnet steel as an N pole, fixing a pole shoe and a second rectangular permanent magnet steel in the rectangular groove in the middle of the outer end of the rectangular groove through a screw, arranging the other identical first rectangular permanent magnet steel in another adjacent rectangular groove, arranging the outer side of the other first rectangular permanent magnet steel as an S pole, fixing the pole shoe and the other second rectangular permanent magnet steel in the rectangular groove in the middle of the other rectangular groove through the screw, and the polarity of the outer side of the other second rectangular permanent magnet steel is S pole, and so on, to form the biradial combined type magnetic pole permanent magnet rotor with N poles and S poles arranged at intervals.
Compared with the prior art, the second rectangular permanent magnet steel in the driving motor rotor divides the magnetic path of the first rectangular permanent magnet steel into a left path and a right path, so that the problems of uneven magnetic field distribution and driving motor pulsation caused by large static magnetic force of the center of the magnetic pole due to the fact that the magnetic field of the first rectangular permanent magnet steel is concentrated in the center of the magnetic pole are solved, meanwhile, the first rectangular permanent magnet steel and the second rectangular permanent magnet steel jointly provide magnetic flux of each pole, the magnetic gathering effect of the permanent magnet rotor is obvious, the power density is high, pole shoes are attached to the outer side of the second rectangular permanent magnet steel instead of a plane air gap, and the problem of permanent magnet steel demagnetization caused by the armature reaction magnetic field under a high-.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a cross-sectional view of the permanent magnet rotor of the embodiment shown in fig. 1.
In the figure: 1. the magnetic isolation structure comprises a first rectangular permanent magnet steel 2, a second rectangular permanent magnet steel 3, pole shoes 4, screws 5, square iron rivets 6, a rotor iron core 7, a rotating shaft 8 and a right-angle trapezoid magnetic isolation air gap.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
biradial combination formula magnetic pole permanent magnet drive motor comprises rotor, stator, end cover, pivot 7, its characterized in that: the driving motor rotor is a double-radial combined magnetic pole permanent magnet rotor;
the double-radial combined type magnetic pole permanent magnet rotor consists of a first rectangular permanent magnet steel 1, a rotor iron core 6, a pole shoe 3, a second rectangular permanent magnet steel 2, a screw 4, a square iron rivet 5, a right-angle trapezoidal magnetic isolation air gap 8 and a rotating shaft 7, wherein even numbers of rectangular grooves which are close to the excircle of a rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the central lines of the width directions of the rectangular grooves penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with the right-angle trapezoidal magnetic isolation air gap 8 penetrating through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angle side of the right-angle trapezoidal magnetic isolation air gap 8 at the left end, the central line of the length directions of the rectangular grooves and the median line of the right-angle trapezoidal, the right end of the rectangular groove is provided with a right-angled trapezoid magnetic isolation air gap 8 penetrating through the thickness of the rotor sheet, the right side of the rectangular groove is communicated with the waist of the right-angled edge of the right-angled trapezoid magnetic isolation air gap 8, the central line of the length direction of the rectangular groove and the median line of the right-angled trapezoid magnetic isolation air gap 8 are on the same straight line, the width of the rectangular groove is 0.6mm larger than the length of the waist of the right-angled edge of the right-angled trapezoid magnetic isolation air gap 8, two adjacent right-angled trapezoid magnetic isolation air gaps 8 are not communicated, the length of the part which is not communicated is 1.5mm, the middle of the outer end of the rectangular groove on the rotor sheet is provided with a rectangular groove penetrating through the thickness of the rotor sheet, the rectangular groove is communicated with the excircle of the rotor sheet, the length of the rectangular groove is larger than the length of the pole shoe 3 and larger than the length of the second rectangular permanent magnet steel 2, the width of the rectangular groove is equal to the sum, the rectangular groove is not communicated with the square groove, the size of the non-communicated part is larger than 2mm, and the side length of the square groove is larger than the diameter of the screw 4;
laminating the rotor punching sheets in a mode that the burr direction faces the same direction, riveting the laminated rotor punching sheets through a square iron rivet 5 to form a rotor iron core 6, drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor iron core 6, processing a screw hole penetrating through the square iron rivet 5 in the center of the square iron rivet 5, enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet 5 to be on the same straight line, placing a first rectangular permanent magnet steel 1 in the rectangular groove, setting the outer side of the first rectangular permanent magnet steel 1 as an N pole, fixing a pole shoe 3 and a second rectangular permanent magnet steel 2 in the rectangular groove in the center of the outer end of the rectangular groove through a screw 4, setting the polarity of the outer side of the second rectangular permanent magnet steel 2 as the N pole, placing another identical first rectangular permanent magnet steel 1 in another adjacent rectangular groove, and setting the outer side of the other first rectangular permanent magnet steel 1 as an S, the pole shoe 3 and the other second rectangular permanent magnet steel 2 are fixed in the rectangular groove in the middle of the outer end of the other rectangular groove through the screw 4, the polarity of the outer side of the other second rectangular permanent magnet steel 2 is set to be an S pole, and the like, so that the biradial combined type magnetic pole permanent magnet rotor with the N poles and the S poles arranged at intervals is formed.

Claims (1)

1. The utility model provides a biradial combination formula magnetic pole permanent magnet drive motor comprises rotor, stator, end cover, pivot (7), its characterized in that: the driving motor rotor is a double-radial combined magnetic pole permanent magnet rotor;
the double-radial combined type magnetic pole permanent magnet rotor consists of a first rectangular permanent magnet steel (1), a rotor iron core (6), a pole shoe (3), a second rectangular permanent magnet steel (2), a screw (4), a square iron rivet (5), a right-angled trapezoidal magnetic isolation air gap (8) and a rotating shaft (7), wherein even numbers of rectangular grooves which are close to the excircle of a rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on a rotor punching sheet, the central lines of the width directions of the rectangular grooves all penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with the right-angled trapezoidal magnetic isolation air gap (8) which penetrates through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angled trapezoidal magnetic isolation air gap (8) at the left end, the central lines of the length directions of the rectangular grooves and the median lines of the right-angled trapezoidal magnetic isolation air gaps (8), the right end of the rectangular groove is provided with a right-angled trapezoid magnetic isolation air gap (8) penetrating through the thickness of the rotor punching sheet, the right side of the rectangular groove is communicated with the waist of the right-angled edge of the right-angled trapezoid magnetic isolation air gap (8), the central line of the length direction of the rectangular groove is on the same straight line with the median line of the right-angled trapezoid magnetic isolation air gap (8), the width of the rectangular groove is 0.6mm larger than the length of the waist of the right-angled edge of the right-angled trapezoid magnetic isolation air gap (8), two adjacent right-angled trapezoid magnetic isolation air gaps (8) are not communicated, the length of the part which is not communicated is 1.5mm, a rectangular groove penetrating through the thickness of the rotor punching sheet is arranged in the middle of the outer end of the rectangular groove on the rotor punching sheet, the outer edge of the rectangular groove is communicated with the excircle of the rotor punching sheet, the length of the rectangular groove is larger than the length of the pole shoe (3) and the second rectangular permanent magnet steel (2), a square groove penetrating through the thickness of the rotor punching sheet is arranged right below the rectangular groove, the rectangular groove is not communicated with the square groove, the size of the non-communicated part is larger than 2mm, and the side length of the square groove is larger than the diameter of the screw (4);
laminating the rotor punching sheets in the same direction along the burr direction, riveting the laminated rotor punching sheets through a square iron rivet (5) to form a rotor iron core (6), drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor iron core (6), processing a screw hole penetrating through the square iron rivet (5) in the center of the square iron rivet (5), enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet (5) to be on the same straight line, placing a first rectangular permanent magnet steel (1) in the rectangular groove, arranging the outer side of the first rectangular permanent magnet steel (1) as an N pole, fixing a pole shoe (3) and a second rectangular permanent magnet steel (2) in the rectangular groove in the middle of the outer end of the rectangular groove through a screw (4), setting the polarity of the outer side of the second rectangular permanent magnet steel (2) as the N pole, placing another first rectangular permanent magnet steel (1) which is completely the same in the adjacent rectangular groove, and the outer side of the other first rectangular permanent magnet steel (1) is set to be an S pole, the pole shoe (3) and the other second rectangular permanent magnet steel (2) are fixed in the rectangular groove in the middle of the outer end of the other rectangular groove through a screw (4), the polarity of the outer side of the other second rectangular permanent magnet steel (2) is the S pole, and the like in sequence, so that the double-radial combined type magnetic pole permanent magnet rotor with the N pole and the S pole which are arranged at intervals is formed.
CN202110278754.3A 2021-03-16 2021-03-16 Dual-radial combined magnetic pole permanent magnet driving motor Withdrawn CN112953061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110278754.3A CN112953061A (en) 2021-03-16 2021-03-16 Dual-radial combined magnetic pole permanent magnet driving motor

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Application Number Priority Date Filing Date Title
CN202110278754.3A CN112953061A (en) 2021-03-16 2021-03-16 Dual-radial combined magnetic pole permanent magnet driving motor

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CN112953061A true CN112953061A (en) 2021-06-11

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004350345A (en) * 2003-05-20 2004-12-09 Matsushita Electric Ind Co Ltd Permanent magnetic motor
JP2010161896A (en) * 2009-01-09 2010-07-22 Mitsubishi Electric Corp Rotor of permanent-magnet-type rotary electric machine
CN102214962A (en) * 2010-04-01 2011-10-12 天津市松正电动科技有限公司 Novel rotor lamination structure
CN103762793A (en) * 2014-02-17 2014-04-30 山东唐骏欧铃汽车制造有限公司 Production method of radial permanent-magnet rotor of drive motor of power-driven transport van
CN209072180U (en) * 2018-12-29 2019-07-05 潍坊市电机一厂有限公司 Electromagnetism and permanent magnetism mixing excitation generator
CN211744169U (en) * 2020-04-30 2020-10-23 潍坊市电机一厂有限公司 Combined magnetic pole neodymium iron boron permanent magnet driving motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004350345A (en) * 2003-05-20 2004-12-09 Matsushita Electric Ind Co Ltd Permanent magnetic motor
JP2010161896A (en) * 2009-01-09 2010-07-22 Mitsubishi Electric Corp Rotor of permanent-magnet-type rotary electric machine
CN102214962A (en) * 2010-04-01 2011-10-12 天津市松正电动科技有限公司 Novel rotor lamination structure
CN103762793A (en) * 2014-02-17 2014-04-30 山东唐骏欧铃汽车制造有限公司 Production method of radial permanent-magnet rotor of drive motor of power-driven transport van
CN209072180U (en) * 2018-12-29 2019-07-05 潍坊市电机一厂有限公司 Electromagnetism and permanent magnetism mixing excitation generator
CN211744169U (en) * 2020-04-30 2020-10-23 潍坊市电机一厂有限公司 Combined magnetic pole neodymium iron boron permanent magnet driving motor

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Application publication date: 20210611

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