CN110120729A - A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor - Google Patents
A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN110120729A CN110120729A CN201810115857.6A CN201810115857A CN110120729A CN 110120729 A CN110120729 A CN 110120729A CN 201810115857 A CN201810115857 A CN 201810115857A CN 110120729 A CN110120729 A CN 110120729A
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- China
- Prior art keywords
- rotor
- stator
- steel
- magnetic field
- iron core
- 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
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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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- 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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Abstract
The invention discloses a kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motors, include stator, outer rotor, internal rotor, rotor field spider, shaft, fore bearing, rear bearing, drive end bearing bracket, rear end cap and casing composition, stator is made of stator core and stator winding, outer rotor is made of outer rotor iron core and outer steel, internal rotor is made of internal rotor iron core and interior magnet steel, rotor field spider and outer rotor, internal rotor and shaft are connected, shaft is supported by front and back bearings, drive end bearing bracket and stator core, casing is connected, and it is provided with bearing chamber and coolant liquid water channel, rear end cap is connected with casing, and it is provided with bearing chamber, outer steel and interior magnet steel are permanent magnet.Radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine of the invention, high, high-efficient, small in size, light-weight with peak torque density, disc type thin type shape outstanding advantages are particularly well suited as the use of the occasions such as electric car wheel side driving motor, hub motor and integrated electricity generator.
Description
Technical field
The present invention relates to electro-mechanical arts, specifically a kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor.
Background technique
In the occasion that Direct wheel drives, the wheel hub of new-energy automobile drive and integrate with engine, it is sought after flat thin type
Driving motor, so that space arrangement becomes feasible.The prior art often uses Axial Field Disk Permanent-magnet motor or radial magnetic field
Outer rotor type permanent-magnet machine.Axial magnetic field disk motor, structure also there are many, but all there is following more formidable disadvantage:
Between stator and rotor, there is very big axial magnetic pull in the first, motor in axial magnetic field, when power of motor is larger, diameter
When larger to size, rotor radial extension is easy by big axial magnetic pull stretch bending, and the axial force can make assembly difficulty, also make
When must be integrated into engine, structure is difficult to realize.
In the axial direction, air gap is very little to air gap between 2nd, motor in axial magnetic field stator and rotor, when rotor turns
After axis is connect with external loading, the axial float of very little is also that cannot be allowed to, and otherwise stator can be wiped mutually with rotor.This is new
To accomplish axial not play completely under the driving motor operating condition of energy automobile, it is difficult；
Road conditions are different in 3rd, start, have and jolt, vibrate, and the motor in axial magnetic field of major diameter, stator and rotor two
Air gap very little between a disk, after by compared with pitchpole or vibration, such as slightly beat, it would be possible to occur that rotor is caused mutually to be wiped
Hidden danger.
In the prior art, another kind of using radial magnetic field outer rotor type permanent-magnet machine, it avoids axial magnetic field electricity
The defect of machine, but the electromagnetic structure of itself can't be satisfactory in peak torque density and efficiency index, therefore need
It makes improvements.
Summary of the invention
The shortcomings that overcoming above-mentioned motor in axial magnetic field the purpose of the present invention is to provide one kind, and can be than turning outside radial magnetic field
Minor magneto has a kind of novel radial magnetic field stator with no yoke birotor disk of higher energy density and higher efficiency
Formula permanent magnet synchronous motor.Motor of the present invention is due to using permanent magnetism dual-rotor structure, and magnetic energy density is high, and the main magnetic circuit linearity
Height can get high magnification numbe peak torque, and to reach, driving motor is small in size, torque density is high.Since stator is without magnetic yoke, drop significantly
Low stator core loss is, it can be achieved that motor higher efficiency.
To achieve the above object, the invention provides the following technical scheme:
A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor includes stator, outer rotor, internal rotor, rotor branch
Frame, shaft, fore bearing, rear bearing, drive end bearing bracket, rear end cap and casing composition, the stator is by stator core and stator winding group
At the outer rotor is made of outer rotor iron core and outer steel, and the internal rotor is made of internal rotor iron core and interior magnet steel, described
Rotor field spider is connected with outer rotor, internal rotor and shaft, and the shaft is supported by front and back bearings, the drive end bearing bracket and stator iron
Core, casing are connected, and are provided with bearing chamber and coolant liquid water channel, and one is placed in two stators 1 in the fixed left and right of intermediate stator bracket 18,
Two outer rotors in left and right and two internal rotors are supported by two rotor field spiders 7 in left and right respectively, and coolant liquid water channel 16 is provided with centre
On stator support 18, the rear end cap is connected with casing, and is provided with bearing chamber, and the outer steel and interior magnet steel are permanent magnet,
It is attached respectively in outer rotor iron core and internal rotor iron core surface, it is even number that outer steel is identical as interior magnet steel number of poles, adjacent magnet steel
Polarity on the contrary, magnet steel magnetic direction is radial direction, magnet steel circumferencial direction is alternatively arranged and is bonded together, the stator iron
For core without yoke portion, the magnetic field magnetic circuit of each pole is interior via outer rotor yoke portion-interior air gap-of outer steel-outer air gap-stator core teeth portion-
Rotor magnetic steel-internal rotor iron core yoke part, then returned to next magnetic pole, form closed circuit.
As a further solution of the present invention: stator core and outer rotor iron core, internal rotor iron core are by silicon steel material
It is overrided to form, or by powdered metallurgical material die cast.
As a further solution of the present invention: outer steel and interior magnet steel are made of rare-earth permanent magnet material.
As a further solution of the present invention: rotor field spider is made of aluminium alloy, can also be made of carbon steel.
As a further solution of the present invention: drive end bearing bracket, rear end cap and casing are made of aluminium alloy.
Compared with prior art, the beneficial effects of the present invention are: radial magnetic field stator with no yoke birotor provided by the invention
Disc type permanent magnet synchronous electric motor, stator core is without yoke portion, because reducing motor total losses, mentioning without stator core yoke portion iron loss
High efficiency；One magnetic pole circuit does not have stator yoke magnetic circuit pressure drop, so that magnetic field operating point is improved, motor gas-gap magnetic flux density
It improves, improves energy density；Stator does not have yoke portion, and leakage magnetic circuit magnetic conductance reduces in stator slot, and stator-slot leakage reactance reduces, stator tooth
The magnetic circuit range of linearity of portion's magnetic circuit in large load current increases, so that peak torque is greatly improved, improves electricity
Machine peak torque density, rotor use birotor, and outer rotor and internal rotor place permanent magnet magnet steel, two-sided permanent magnet body excitation,
Magnetic density is high, and the energy density of motor greatly improves；The present invention is because placed outer rotor, so that the equivalent electromagnetism diameter of motor
Greatly, than traditional inner rotor motor under same output power, the axial length of motor is greatly shortened, and integrated motor is in disc type thin type
Shape.Therefore, radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine of the invention has peak torque density height, efficiency
High, small in size, light-weight, disc type thin type shape outstanding advantages are particularly well suited as electric car wheel side driving motor, wheel
The occasions such as hub motor and integrated electricity generator use.
Detailed description of the invention
Fig. 1 is that the longitudinal profile structure of radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine embodiment 1 of the present invention is shown
It is intended to；
Fig. 2 is the magnetic line of force path schematic diagram of radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine embodiment 1 of the present invention；
Fig. 3 is the longitudinal profile structural representation of radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine embodiment 2 of the present invention
Figure；
Fig. 4 is the longitudinal profile structural representation of radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine embodiment 3 of the present invention
Figure.
Fig. 5 is the interpolation magnet steel layout of radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine embodiment 4 of the present invention
Schematic diagram.
In figure: 1- stator core, 2- stator winding, 3- outer rotor iron core, 4- outer steel, 5- internal rotor iron core, magnetic in 6-
The fixed branch of steel, 7- rotor field spider, 8- shaft, 9- fore bearing, 10- rear bearing, 11- drive end bearing bracket, 12- rear end cap, 13- casing, 14-
Frame, 15- epoxy, 16- coolant liquid water channel, 17- water channel cover board, 18- intermediate stator bracket.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
As shown in Figure 1, radial magnetic field stator with no yoke birotor permanent magnetic disc type electric machine provided by the invention including stator core 1, fixed
Sub- winding 2, outer rotor iron core 3, outer steel 4, internal rotor iron core 5, interior magnet steel 6, rotor field spider 7, shaft 8, fore bearing 9, rear axle
It holds 10, drive end bearing bracket 11, rear end cap 12 and casing 13 to form, stator core 1 and outer rotor iron core 3, internal rotor iron core 5 are by silicon steel
Sheet material is overrided to form；Outer steel 4 and interior magnet steel 5 are made of rare-earth permanent magnet material, and rotor field spider 7 is made of aluminium alloy,
It can be made of carbon steel, drive end bearing bracket 11, rear end cap 12 and casing 13 are made of aluminium alloy.
Stator core 1 passes through fixed bracket 14 and fixes with stator winding 2 together encapsulating epoxy 15 and drive end bearing bracket 11；Outer magnetic
Steel 4 and interior magnet steel 6, are attached with epoxy glue in the surface of outer rotor iron core 3 and internal rotor iron core 5 respectively；Outer rotor iron core 3 with it is interior
Rotor core 5 is fixedly connected by rotor field spider 7, and rotor field spider 7 is set in shaft 8, and shaft is at 9 rear bearing of fore bearing 10
Can be rotated under holding, thus realize outer rotor together with internal rotor with shaft 8 for axis, around stator core rotate.In front end
It covering and is provided with coolant liquid water channel 16, sealed with water channel cover board 17, water channel is connected (not shown) with outside cooling pump by water swivel,
Flux loop is as shown in Figure 2.
Embodiment 2
As shown in figure 3, being the embodiment that above-described embodiment 1 is combined into bi-motor, the difference with embodiment 1 is to implement
Example 2 is made of the two sets of stators in left and right, two outer rotors and two internal rotors；It is supported with a rotor field spider 7 and connect left and right two
A outer rotor and two internal rotors；The mode similarly to Example 1 that two stator cores 1 is respectively adopted is fixed on 11 He of drive end bearing bracket
On rear end cap 12；Drive end bearing bracket 11 and rear end cap 12 have coolant liquid water channel 16.Remaining similar embodiment 1.
Embodiment 3
As shown in figure 4, being another embodiment that above-described embodiment 1 is combined into bi-motor, the difference with embodiment 2
It is that embodiment 3 is placed in two stators 1 in the fixation of intermediate stator bracket 18 left and right with one, controls in two outer rotors and two and turn
Son is supported by two rotor field spiders 7 in left and right respectively；Coolant liquid water channel 16 is provided on intermediate stator bracket 18.Remaining similar implementation
Example 2.
Embodiment 4.
It is with 1 different places of embodiment, the outer rotor of embodiment 4 and the modes of emplacement of internal rotor magnetic steel, using interpolation type
Mode is shown in attached drawing 5, i.e., is provided with slot on each rotor core, and in magnet steel insertion groove, outer rotor iron core 3 and outer steel 4 use " V " word
Shape structure, internal rotor iron core 5 and interior magnet steel 6 use linear type structure, and this interpolation type magnet steel mode is in high speed operation of motor
When can anti-dropout, improve the reliability of rotor；Meanwhile this interpolation type magnet steel layout, reluctance torque can also be generated, favorably
In further increasing motor torque.Remaining is the same as embodiment 1.
Embodiment 5
It is with 2 different places of embodiment, the modes of emplacement of two sets of outer rotors and internal rotor magnetic steel of embodiment 5, is all made of interior
The mode for the formula of inserting, is shown in attached drawing 5, i.e., is provided with slot on each rotor core, and in magnet steel insertion groove, 3 core of outer rotor iron and outer steel 4 are used
" V " character form structure, internal rotor iron core 5 and interior magnet steel 6 use linear type structure.Remaining is the same as embodiment 2.
Embodiment 6
It is with 3 different places of embodiment, the modes of emplacement of two sets of outer rotors and internal rotor magnetic steel of embodiment 6, is all made of interior
The mode for the formula of inserting, is shown in attached drawing 5, i.e., is provided with slot on each rotor core, and in magnet steel insertion groove, 3 core of outer rotor iron and outer steel 4 are used
" V " character form structure, internal rotor iron core 5 and interior magnet steel 6 use linear type structure.Remaining is the same as embodiment 3.
1) the stator core material in the above various embodiments can also be made of the powdered metallurgical material of high resistivity.
2) the rotor field spider material in the above various embodiments can also be made of carbon steel or high-strength stainless steel material.
3) embodiment 4, embodiment 5, the rotor magnetic steel layout structure of embodiment 6 may each be " V " font, linear type,
The interpolation type magnet steel arrangement of multilayer can also be used, to achieve the purpose that further increase reluctance torque.
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (5)
1. a kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor, which is characterized in that include stator, outer rotor,
Internal rotor, rotor field spider, shaft, fore bearing, rear bearing, drive end bearing bracket, rear end cap and casing composition, the stator is by stator core
It is formed with stator winding, the outer rotor is made of outer rotor iron core and outer steel, and the internal rotor is by internal rotor iron core and interior
Magnet steel composition, the rotor field spider are connected with outer rotor, internal rotor and shaft, and the shaft is supported by front and back bearings, described
Drive end bearing bracket is connected with stator core, casing, and is provided with bearing chamber and coolant liquid water channel, and it is solid to be placed in intermediate stator bracket 18 with one
Surely two stators 1 in left and right, two outer rotors in left and right and two internal rotors are supported by two rotor field spiders 7 in left and right respectively, coolant liquid
Water channel 16 is provided on intermediate stator bracket 18, and the rear end cap is connected with casing, and is provided with bearing chamber, the outer steel and interior
Magnet steel is permanent magnet, is attached respectively in outer rotor iron core and internal rotor iron core surface, outer steel is identical as interior magnet steel number of poles,
For even number, on the contrary, magnet steel magnetic direction is radial direction, magnet steel circumferencial direction is alternatively arranged and is bonded in the polarity of adjacent magnet steel
Together, the stator core is without yoke portion, and the magnetic field magnetic circuit of each pole is via outer rotor yoke portion-outer air gap-stator core of outer steel-
Interior air gap-internal rotor magnetic steel-internal rotor the iron core yoke part of teeth portion-, then returned to next magnetic pole, form closed circuit.
2. radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor according to claim 1, which is characterized in that fixed
Sub- iron core and outer rotor iron core, internal rotor iron core are overrided to form by silicon steel material, or by the powder metallurgy material of high resistivity
Expect die cast.
3. radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor according to claim 1, which is characterized in that outer
Magnet steel and interior magnet steel are made of rare-earth permanent magnet material.
4. radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor according to claim 1, which is characterized in that turn
Submounts are made of aluminium alloy, can also be made of carbon steel.
5. radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor according to claim 1, which is characterized in that preceding
End cap, rear end cap and casing are made of aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115857.6A CN110120729A (en) | 2018-02-06 | 2018-02-06 | A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115857.6A CN110120729A (en) | 2018-02-06 | 2018-02-06 | A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110120729A true CN110120729A (en) | 2019-08-13 |
Family
ID=67519815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810115857.6A Pending CN110120729A (en) | 2018-02-06 | 2018-02-06 | A kind of radial magnetic field stator with no yoke Double-rotor disc permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110120729A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765258A (en) * | 2021-08-18 | 2021-12-07 | 上海大学 | Composite multidirectional coreless disc type motor |
| CN115149721A (en) * | 2022-09-06 | 2022-10-04 | 宁德时代电机科技有限公司 | Disc type magnetic force shield pump driven by permanent magnet synchronous motor of integrated controller |
| US11712961B2 (en) | 2021-01-29 | 2023-08-01 | Jiangsu University | Dual-rotor in-wheel motor based on axial magnetic field and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050752A (en) * | 2004-08-03 | 2006-02-16 | Nissan Motor Co Ltd | Stator cooling structure of disk rotary electric machine |
| US20060131985A1 (en) * | 2004-12-16 | 2006-06-22 | General Electric Company | Electrical machines and assemblies including a yokeless stator with modular lamination stacks |
| CN101447702A (en) * | 2007-11-29 | 2009-06-03 | 通用电气公司 | Stator and stator tooth modules for electrical machines |
| CN103078459A (en) * | 2013-02-04 | 2013-05-01 | 苏州大学 | Coreless permanent magnet motor |
| CN103460571A (en) * | 2011-03-31 | 2013-12-18 | 并木精密宝石株式会社 | Outer rotor motor |
| CN106059236A (en) * | 2015-04-17 | 2016-10-26 | 信越化学工业株式会社 | Axial gap type rotary machine |
-
2018
- 2018-02-06 CN CN201810115857.6A patent/CN110120729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050752A (en) * | 2004-08-03 | 2006-02-16 | Nissan Motor Co Ltd | Stator cooling structure of disk rotary electric machine |
| US20060131985A1 (en) * | 2004-12-16 | 2006-06-22 | General Electric Company | Electrical machines and assemblies including a yokeless stator with modular lamination stacks |
| CN101447702A (en) * | 2007-11-29 | 2009-06-03 | 通用电气公司 | Stator and stator tooth modules for electrical machines |
| CN103460571A (en) * | 2011-03-31 | 2013-12-18 | 并木精密宝石株式会社 | Outer rotor motor |
| CN103078459A (en) * | 2013-02-04 | 2013-05-01 | 苏州大学 | Coreless permanent magnet motor |
| CN106059236A (en) * | 2015-04-17 | 2016-10-26 | 信越化学工业株式会社 | Axial gap type rotary machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11712961B2 (en) | 2021-01-29 | 2023-08-01 | Jiangsu University | Dual-rotor in-wheel motor based on axial magnetic field and control method thereof |
| CN113765258A (en) * | 2021-08-18 | 2021-12-07 | 上海大学 | Composite multidirectional coreless disc type motor |
| CN113765258B (en) * | 2021-08-18 | 2023-10-13 | 上海大学 | Composite multidirectional coreless disc motor |
| CN115149721A (en) * | 2022-09-06 | 2022-10-04 | 宁德时代电机科技有限公司 | Disc type magnetic force shield pump driven by permanent magnet synchronous motor of integrated controller |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190813 |