CN110233556A - A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor - Google Patents
A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor Download PDFInfo
- Publication number
- CN110233556A CN110233556A CN201910627656.9A CN201910627656A CN110233556A CN 110233556 A CN110233556 A CN 110233556A CN 201910627656 A CN201910627656 A CN 201910627656A CN 110233556 A CN110233556 A CN 110233556A
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- China
- Prior art keywords
- magnet
- halbach magnet
- cup
- cover
- interior
- 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
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 40
- 230000004907 flux Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 4
- 101150038956 cup-4 gene Proteins 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/58—Motors or generators without iron cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor, the present invention relates to hollow-cup motor technical fields, shaft is screwed on fixation using bearing and front cover and rear cover, front cover and rear cover are separately fixed at the rear and front end of casing, and the inner end of front cover is set in the shaft in casing, the outer cover for being arranged end is equipped with inner yoke, the outer cover of inner yoke is equipped with interior Halbach magnet, the outer cover of interior Halbach magnet is equipped with outer Halbach magnet, the outer wall of the outer Halbach magnet is fixed on the inner wall of casing, and activity is inserted with armature cup in the gap between interior Halbach magnet and outer Halbach magnet, the rear end of the armature cup is fixed on commutator, commutator, which is arranged, to be fixed in shaft, the medial surface of rear cover is fixed with brush.Stator yoke can be made to generate higher magnetic flux density in air gap using when common material, there is good magnetic screening action；Conductive magnetic yoke thickness can be reduced, to improve the utilization rate of magnet and permeability magnetic material.
Description
Technical field
The present invention relates to hollow-cup motor technical fields, and in particular to a kind of bimorph transducer magnetic field permanent magnet DC hollow cup electricity
Machine.
Background technique
Permanent magnet DC hollow-cup motor has energy saving, the sensitive characteristic for facilitating control and stable operation outstanding.Due to nothing
Iron core represents the developing direction of motor as efficient energy conversion device, in many application aspects.But drag cup is electric
For machine due to iron-core-free, air gap is much greater compared with iron core motor.Under the premise of having bulking value limitation, motor gas-gap
It will lead to torque coefficient greatly and be difficult to improve, appearance the problems such as leakage field.As control motor, purposes, performance and environmental condition
It is special.Since torque, efficiency, power density needs of the market to motor continue to increase, existing hollow-cup motor is difficult to meet
The increasing requirement in market.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of reasonable bimorph transducer magnetic fields of design
Permanent magnet DC hollow-cup motor can make stator yoke generate higher magnetic flux density, tool in air gap using when common material
There is good magnetic screening action；Conductive magnetic yoke thickness can be reduced, to improve the utilization rate of magnet and permeability magnetic material.
In order to achieve the above objectives, present invention employs following technical proposals: it includes shaft, commutator, casing, armature
Cup, front cover, inner yoke, brush, interior Halbach magnet, outer Halbach magnet, rear cover；Shaft utilizes bearing and front cover and rear cover
Be screwed on fixation, and front cover and rear cover are separately fixed at the rear and front end of casing, and the inner end of front cover is set in and turns in casing
On axis, which is equipped with inner yoke, and the outer cover of inner yoke is equipped with interior Halbach magnet, interior Halbach magnet
Outer cover be equipped with outer Halbach magnet, the outer wall of the outer Halbach magnet is fixed on the inner wall of casing, and interior Halbach
Activity is inserted with armature cup in gap between magnet and outer Halbach magnet, and the rear end of the armature cup is fixed on commutator,
Commutator, which is arranged, to be fixed in shaft, and the medial surface of rear cover is fixed with brush；The armature cup uses 23 elements, Mei Geyuan
Part is 3 circles, every circle be all made of 7 strands and around diameter be made of the conducting wire of 0.4mm.
Further, the interior Halbach magnet and outer Halbach magnet are Sintered NdFeB magnet, air gap magnetic
It is close to reach 1.2T.
Further, it is electrically connected between the armature cup and commutator using wave winding structure.
The working principle of the invention: interior Halbach magnet generates air gap excitation field, and when rotor rotates, conductor cuts magnetic
The line of force；Outer Halbach magnet generates air gap excitation field, when armature cup rotates, conductor cutting magnetic line；Inside and outside magnetic field, mutually
Superposition, generates poly- magnetic effect；When the thickness of interior Halbach magnet and outer Halbach magnet is to a timing, magnetic density increase is very
It is few, due to air-gap flux and big 1.6 times or so of general structure Permanent magnet DC hollow-cup motor, before guaranteeing identical no-load speed
It puts, the number of turns (conductor number) of the coil of armature cup is greatly decreased, and to increase conductor cross sectional area, reduces conductor resistance and provides sky
Between (permanent magnet DC motor armature resistance is smaller, and the characteristic of motor is harder, and load-carrying ability is stronger), armature cup use 23 members
Part, each element are 3 circles, every circle be all made of 7 strands and around diameter be made of the conducting wire of 0.4mm.
After adopting the above structure, the beneficial effects of the present invention are: the present invention provides a kind of bimorph transducer magnetic field permanent magnet direct currents
Hollow-cup motor can make stator yoke generate higher magnetic flux density in air gap using when common material, have good
Magnetic screening action；Conductive magnetic yoke thickness can be reduced, to improve the utilization rate of magnet and permeability magnetic material.
Detailed description of the invention:
Fig. 1 is axial sectional view of the invention.
Fig. 2 is radial cross-section of the invention.
Description of symbols:
Shaft 1, commutator 2, casing 3, armature cup 4, front cover 5, inner yoke 6, brush 7, interior Halbach magnet 8, outer Halbach
Magnet 9, rear cover 10.
Specific embodiment:
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clearly and completely
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, present embodiment adopts the following technical scheme that it includes shaft 1, commutator 2, machine
Shell 3, armature cup 4, front cover 5, inner yoke 6, brush 7, interior Halbach magnet 8, outer Halbach magnet 9, rear cover 10；1 benefit of shaft
It is screwed on fixation with bearing and front cover 5 and rear cover 10, front cover 5 and rear cover 10 are separately fixed at the rear and front end of casing 3, casing 3
Outer diameter is 60mm, and the inner end of front cover 5 is set in the shaft 1 in casing 3, which is equipped with inner yoke
6, the outer cover of inner yoke 6 is equipped with interior Halbach magnet 8, and the outer cover of interior Halbach magnet 8 is equipped with outer Halbach magnet 9,
The outer wall of the outer Halbach magnet 9 is fixed on the inner wall of casing 3, and interior Halbach magnet 8 and outer Halbach magnet 9 are
Sintered NdFeB magnet, air gap flux density reach 1.2T, while the optimum thickness of interior Halbach magnet 8 and outer Halbach magnet 9
It is 5.92mm；And activity is inserted with armature cup 4 in the gap between interior Halbach magnet 8 and outer Halbach magnet 9, the electricity
The rear end of pivot cup 4 is fixed on commutator 2, be electrically connected between armature cup 4 and commutator 2 using wave winding structure (with elimination around
Circulation in motor when group is asymmetric), commutator 2, which is arranged, to be fixed in shaft 1, and the medial surface of rear cover 10 is fixed with brush 7；Institute
The armature cup 4 stated uses 23 elements, and each element is 3 circles, every circle be all made of 7 strands and around diameter be 0.4mm conducting wire
It is made.
The working principle of this specific embodiment:: interior Halbach magnet 8 generates air gap excitation field and leads when rotor rotates
Body cutting magnetic line；Outer Halbach magnet 9 generates air gap excitation field, when armature cup 4 rotates, conductor cutting magnetic line；Interior,
External magnetic field is overlapped mutually, and generates poly- magnetic effect；When the thickness of interior Halbach magnet 8 and outer Halbach magnet 9 to one timing,
Magnetic density increases seldom, identical in guarantee due to air-gap flux and big 1.6 times or so of general structure Permanent magnet DC hollow-cup motor
Under the premise of no-load speed, the number of turns (conductor number) of the coil of armature cup 4 is greatly decreased, and to increase conductor cross sectional area, reduction is led
Bulk resistor provides space (permanent magnet DC motor armature resistance is smaller, and the characteristic of motor is harder, and load-carrying ability is stronger), electricity
Pivot cup 4 uses 23 elements, and each element is 3 circles, every circle be all made of 7 strands and around diameter be made of the conducting wire of 0.4mm；By
In practical double Halbach magnets, greatly promote the magnetic flux of motor, the torque of motor greatly increases；Since magnetic flux is big
Width promotes (relative to conventional structure), and the number of turns of armature cup coil greatly reduces, and the coil turn of armature cup is more than sufficient, because
This, can be significantly increased sectional area of wire, effectively reduce resistance, greatly increase the hardware features of motor, finally reach large torque,
High power density, efficient purpose, meet market demands.
After adopting the above structure, the beneficial effect of present embodiment is: present embodiment provides a kind of double
Stator field Permanent magnet DC hollow-cup motor can make stator yoke generate higher magnetic flux in air gap using when common material
Density has good magnetic screening action；Conductive magnetic yoke thickness can be reduced, to improve the utilization rate of magnet and permeability magnetic material.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (4)
1. a kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor, it is characterised in that: it includes shaft (1), commutator (2), machine
Shell (2), armature cup (4), front cover (5), inner yoke (6), brush (7), interior Halbach magnet (8), outer Halbach magnet (9),
Rear cover (10)；Shaft (1) is screwed on fixation using bearing and front cover (5) and rear cover (10), and front cover (5) and rear cover (10) are fixed respectively
It is set in the shaft (1) in casing (2) in the inner end of the rear and front end of casing (2), and front cover (5), this is arranged end
Outer cover is equipped with inner yoke (6), and the outer cover of inner yoke (6) is equipped with interior Halbach magnet (8), interior Halbach magnet (8)
Outer cover is equipped with outer Halbach magnet (9), and the outer wall of the outer Halbach magnet (9) is fixed on the inner wall of casing (2), and interior
Activity is inserted with armature cup (4) in gap between Halbach magnet (8) and outer Halbach magnet (9), the armature cup (4)
Rear end is fixed on commutator (2), and commutator (2), which is arranged, to be fixed on shaft (1), and the medial surface of rear cover (10) is fixed with brush
(7)；The armature cup (4) uses 23 elements, and each element is 3 circles, every circle be all made of 7 strands and around diameter be
The conducting wire of 0.4mm is made.
2. a kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor according to claim 1, it is characterised in that: described is interior
Halbach magnet (8) and outer Halbach magnet (9) are Sintered NdFeB magnet, and air gap flux density reaches 1.2T.
3. a kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor according to claim 1, it is characterised in that: the electricity
It is electrically connected between pivot cup (4) and commutator (2) using wave winding structure.
4. a kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor according to claim 1, it is characterised in that: its work
Principle: interior Halbach magnet generates air gap excitation field, when rotor rotates, conductor cutting magnetic line；Outer Halbach magnet produces
Angry gap excitation field, when armature cup rotates, conductor cutting magnetic line；Inside and outside magnetic field, is overlapped mutually, and generates poly- magnetic effect；When
The thickness of interior Halbach magnet and outer Halbach magnet is to a timing, and magnetic density increases seldom, due to air-gap flux and generally
Big 1.6 times of structure Permanent magnet DC hollow-cup motor or so, under the premise of guaranteeing identical no-load speed, the circle of the coil of armature cup
Number is greatly decreased, and to increase conductor cross sectional area, reduces conductor resistance and provides space, armature cup uses 23 elements, Mei Geyuan
Part is 3 circles, every circle be all made of 7 strands and around diameter be made of the conducting wire of 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627656.9A CN110233556A (en) | 2019-07-12 | 2019-07-12 | A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627656.9A CN110233556A (en) | 2019-07-12 | 2019-07-12 | A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110233556A true CN110233556A (en) | 2019-09-13 |
Family
ID=67855006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910627656.9A Pending CN110233556A (en) | 2019-07-12 | 2019-07-12 | A kind of bimorph transducer magnetic field permanent magnet DC hollow cup motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110233556A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971097A (en) * | 2019-11-28 | 2020-04-07 | 西安航天精密机电研究所 | Large-torque-density coreless motor and dynamic balance adjusting method thereof |
| CN113346650A (en) * | 2021-07-09 | 2021-09-03 | 金龙机电（东莞）有限公司 | Hollow cup motor |
| CN113346651A (en) * | 2021-07-09 | 2021-09-03 | 金龙机电（东莞）有限公司 | Hollow cup motor |
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|---|---|---|---|---|
| CN1652438A (en) * | 2005-01-24 | 2005-08-10 | 北京航空航天大学 | Low power consumption brushless DC motor with Halbach magnet structure |
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| CN102013781A (en) * | 2010-12-29 | 2011-04-13 | 北京奇峰聚能科技有限公司 | Brushless direct current motor with internal and external rotors and without core losses |
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| CN203645506U (en) * | 2013-06-28 | 2014-06-11 | 常州市昊升电机有限公司 | Coreless permanent-magnet DC motor |
| WO2014122374A1 (en) * | 2013-02-07 | 2014-08-14 | Whylot Sas | Electromagnetic motor or generator with a plurality of air gaps having permanent magnets and ironless winding element |
| CN104883015A (en) * | 2015-05-06 | 2015-09-02 | 东南大学 | Dual-stator superconductive exciting field modulating motor |
| CN105141091A (en) * | 2015-10-15 | 2015-12-09 | 东南大学 | Double-stator double-power-winding magnetic concentrating hybrid permanent magnet memory motor |
| CN109600010A (en) * | 2018-12-24 | 2019-04-09 | 江苏大学 | A kind of bimorph transducer mixed excitation electric machine with Halbach permanent magnet array |
| CN209844801U (en) * | 2019-07-12 | 2019-12-24 | 深圳市鑫宝达电机有限公司 | Double-stator magnetic field permanent magnet direct current coreless motor |
-
2019
- 2019-07-12 CN CN201910627656.9A patent/CN110233556A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1652438A (en) * | 2005-01-24 | 2005-08-10 | 北京航空航天大学 | Low power consumption brushless DC motor with Halbach magnet structure |
| CN101159400A (en) * | 2007-10-15 | 2008-04-09 | 北京航空航天大学 | Torque motor for satellite antenna pointing mechanism |
| CN102013781A (en) * | 2010-12-29 | 2011-04-13 | 北京奇峰聚能科技有限公司 | Brushless direct current motor with internal and external rotors and without core losses |
| CN102780343A (en) * | 2012-07-02 | 2012-11-14 | 丽水职业技术学院 | Inner and outer double-stator structure iron-core-free motor |
| WO2014122374A1 (en) * | 2013-02-07 | 2014-08-14 | Whylot Sas | Electromagnetic motor or generator with a plurality of air gaps having permanent magnets and ironless winding element |
| CN103200719A (en) * | 2013-03-04 | 2013-07-10 | 哈尔滨工业大学（威海） | Double-rotor electromagnetic heating machine |
| CN203645506U (en) * | 2013-06-28 | 2014-06-11 | 常州市昊升电机有限公司 | Coreless permanent-magnet DC motor |
| CN104883015A (en) * | 2015-05-06 | 2015-09-02 | 东南大学 | Dual-stator superconductive exciting field modulating motor |
| CN105141091A (en) * | 2015-10-15 | 2015-12-09 | 东南大学 | Double-stator double-power-winding magnetic concentrating hybrid permanent magnet memory motor |
| CN109600010A (en) * | 2018-12-24 | 2019-04-09 | 江苏大学 | A kind of bimorph transducer mixed excitation electric machine with Halbach permanent magnet array |
| CN209844801U (en) * | 2019-07-12 | 2019-12-24 | 深圳市鑫宝达电机有限公司 | Double-stator magnetic field permanent magnet direct current coreless motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971097A (en) * | 2019-11-28 | 2020-04-07 | 西安航天精密机电研究所 | Large-torque-density coreless motor and dynamic balance adjusting method thereof |
| CN113346650A (en) * | 2021-07-09 | 2021-09-03 | 金龙机电（东莞）有限公司 | Hollow cup motor |
| CN113346651A (en) * | 2021-07-09 | 2021-09-03 | 金龙机电（东莞）有限公司 | Hollow cup motor |
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