CN104377843B - Sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor - Google Patents
Sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor Download PDFInfo
- Publication number
- CN104377843B CN104377843B CN201410738701.5A CN201410738701A CN104377843B CN 104377843 B CN104377843 B CN 104377843B CN 201410738701 A CN201410738701 A CN 201410738701A CN 104377843 B CN104377843 B CN 104377843B
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- CN
- China
- Prior art keywords
- motor
- magnetic circuit
- barrel
- base
- axial magnetic
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- 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
- H02K1/141—Stator cores with salient poles consisting of C-shaped 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/2713—Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
Abstract
The invention provides a sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor. A motor stator is characterized in that claw poles are uniformly and perpendicularly fixed around a base, central lines of the claw poles are parallel to axis of a rotating shaft, a coil winding is mounted on each claw pole in a sleeved manner, the base of the motor stator and the coil windings on the claw poles of the base are covered and sealed by plastic to form a barrel-shaped plastic sealing member, and a cover covers and seals the barrel-shaped plastic sealing member; the rotating shaft of a motor rotor penetrates the stator base, an iron core is perpendicularly fixed, permanent magnet magnetic steel is uniformly fixed on the iron core, and sensor magnetic steel is fixed at the center of the other side of the iron core and corresponds to a Hall sensor fixed on the inner wall of the cover. The sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor has the advantages that an axial magnetic circuit is adopted, and the motor is large in torque, high in efficiency, small in size and space and high in system integrity.
Description
Technical field
The present invention relates to the motor of automobile engine application, such as air throttle, recycling, turbocharging, vortex control are discarded
The control of the valves such as system.
Background technology
With the raising of national economy and living standards of the people, the recoverable amount of various vehicles in rapid growth trend year by year,
The electrification of automotive engine control constantly propulsion, substitutes original simple and mechanical or hydraulic control.Electrified precise control,
The performance of automobile can be greatly improved, oil consumption is reduced, while controlling discharge.And the electrified control of these valve bodies is, it is necessary to accurate
Electronic product implements control, and this motor must be able to bear engine environmental high temperature, shakes, and discards and corrodes, while ensureing
Long-life uses.
The electronic unit of motor internal is Sensitive Apparatus, is highly prone to corrosion and damage, and iron core surface can corrosion, internal bearings
Can pollute or corrosion, badly influence the life and reliability of motor.Valve motor operating mode duration time carry load work,
In the case of motor is closed, if not carrying out thermal design and radiating treatment, motor temperature rise can be caused under magnet steel magnetic property and coil insulation
Drop, even results in high-temperature electric machine failure.Automobile engine periphery valve body installing space is limited, it is necessary to controlled motor entirety chi simultaneously
It is very little.
Motor using conventional radial magnetic structure, it is necessary to two sets of bearings are supported, along with common sensor is installed
Support, motor can be especially long, is unfavorable for the integrated of system.
And if arranged using brush motor, not only brush motor cannot meet the requirement of engine high life, and he needs
Want gear combination moment of torsion to change, produce extra arrangement difficulty and quality control complexity.
The content of the invention
For the motor Special use demand of above-mentioned automobile engine application, traditional structure motor, it is impossible to meet and require, this
Invention provides a kind of jaw pole axial magnetic circuit brushless, permanently excited direct current motor, and the motor stator is vertically equal in a base surrounding
Even fixed pawl pole, the center line of pawl pole and the diameter parallel of rotating shaft, suit coil winding in pawl pole, the base of motor stator, bottom
Coil windings in seat pawl pole, envelope is covered with plastic, forms barrel-shaped plastic part, separately has cover lid lid to be enclosed on barrel-shaped plastic part, motor
The rotating shaft of rotor passes through stator base, vertically fixes an iron core, uniform fixed permanent magnet magnet steel, another face of iron core on iron core
Center, fixes one block of sensor magnet steel, and the sensor magnet steel is corresponding with the Hall sensor that cover lid inwall is fixed.
Magnet steel on the rotor is axial charging, and magnet steel surface forms the magnetic field of N-S-N-S..... cross-distributions, gas
Magnetic direction is for axially in gap.
The motor stator pawl pole be 2n, n=1,2,3 ..., the coil windings in pawl pole join end to end, constitute single-phase electricity
Machine, or, coil is divided into two-phase, three-phase, four mutually and five phases.
The sensor magnet steel is axial charging, is axially formed N-S poles on two annular magnetic steel faces.
The machine shaft is supported using single-bearing, and rotating shaft is provided with movable sealing structure.
The cover port, there is several snap fits, and with the snap fit opposite position, there are several draw-in grooves barrel-shaped plastic part port,
After cover lid covers barrel-shaped plastic part, snap fit is sticked into draw-in groove.
The plastic is heat-conducting insulation material.
The cover lid lid barrel-shaped plastic part of envelope, also " O " shape sealing ring.
It is an advantage of the invention that motor of the invention has carried out dual-seal design and heat conductive design, environmental suitability is strong,
Corrosion failure probability is reduced, reliability is high, long lifespan；Motor of the present invention uses axial magnetic circuit, and magnet steel active area is big, air gap magnetic
Close height, torque is big, efficiency high, while dimensional space is small, the system integration is strong；Motor of the present invention uses claw-pole structure, by control
The number and control umber of pulse of pawl pole processed, can effectively control the opening angle of different valves, be adapted to the control valve of different automobile types
Property is strong.Bearing of the present invention uses axial thrust bearing, bearing to receive axial force.Electromechanical transducer is using Hall sensor and drives electricity
The packing forms of road one, effectively reduce installing space.Wide market.
Brief description of the drawings
Accompanying drawing 1 is structure sectional view of the present invention.
Accompanying drawing 2 is motor stator structure stereogram.
Accompanying drawing 3 is rotor three-dimensional structure diagram.
Accompanying drawing 4 is rotor stereochemical structure another side stereogram.
Accompanying drawing 5 is sensor magnet steel magnetizing direction schematic diagram.
Label declaration in figure：
1-pawl pole；2-coil；3-base；4-rotor permanent magnet magnet steel；5-rotor core；6-bearing；7-turn
Axle；8-sensor magnet steel；9-coil rack, 10-heat-conducting plastic, 11-static sealing ring, 12-cover lid, 13-dynamic seal ring,
14-contact pin, 15- Hall sensors, 16- mounting screws, 17- snap fits.
Specific embodiment
Please read shown in accompanying drawing, motor stator of the present invention is to fix pawl pole 1 in the surrounding Vertical Uniform of a base 3, in pawl pole 1
The diameter parallel of heart line and rotating shaft 7, suit coil winding 2 in pawl pole 1, the coil in the base 3 of motor stator, base pawl pole 1
Winding 2, envelope is covered with plastic 10, forms barrel-shaped plastic part, is separately had cover lid 12 to cover and is enclosed on barrel-shaped plastic part, the rotating shaft of rotor
7 pass through stator base 3, vertically fix an iron core 5, uniform fixed permanent magnet magnet steel 4, another face center of iron core 5 on iron core 5
Position, fixes one block of sensor magnet steel 8, and the sensor magnet steel 8 Hall sensor 15 fixed with the inner side of cover lid 12 is corresponding, this
The sensor that uses of invention is for without pcb board structure, integral packaging Hall sensor, it is to avoid general pcb board soft copy is exposed to
Failure risk in environment, and it is more compact integrated.
Magnet steel 4 on the rotor is axial charging, and the surface of magnet steel 4 forms the magnetic field of N-S-N-S..... cross-distributions,
Magnetic direction is for axially in air gap.
The motor stator pawl pole 1 is 2n, n=1,2,3 ..., the coil windings 2 in pawl pole 1 join end to end, and constitute unidirectional
Motor, or, coil is divided into two-phase, three-phase, four mutually and five phases.
The sensor magnet steel 8 is axial charging, is axially formed N-S poles on two annular magnetic steel faces.
The machine shaft 7 is supported using single-bearing, and rotating shaft 7 is provided with movable sealing structure 13.
, there are several snap fits 17 port of cover lid 12, and with the opposite position of snap fit 17, barrel-shaped plastic part port has several
Draw-in groove, after cover lid 12 covers barrel-shaped plastic part, snap fit 17 is sticked into draw-in groove.
The plastic 10 is heat-conducting insulation material, is such as but not limited to heat conductive insulating PA66 plus glass, heat conductive insulating PA46
Plus glass, heat conductive insulating PPS (PBT, PA6T ...) plus glass etc..
The lid of the cover lid 12 barrel-shaped plastic part of envelope, also " O " shape sealing ring 11.
Stator core pawl pole number is 2n, (n of n=1,2,3 ... is arbitrary integer)；Coil is sequentially sleeved on each claw pole stator
（Shown in Fig. 2）, all coils can join end to end to form monophase machine, also coil can be divided into 2 phases, 3 phases（N is 3 multiple）、
4 phases（N is 4 multiple）, 5 phases（N is 5 multiple）, by that analogy；
As shown in figure 3, rotor permanent magnet magnet steel 4 is bonded on rotor core 5, claw pole stator 1, base 3 and rotor core 5
It is the soft magnetic materials such as silicon steel or magnetic links；Stator core pawl pole 1 can be for monoblock soft magnetic materials is integrally machined with base 3
Into linking after can also shaping respectively.
As shown in Figure 4, air gap one side bonding sensor magnet steel 8 is leaned against in rotor core 5.
As shown in Figure 1, Hall sensor detection circuit 15, sensor magnet steel 8 to detection circuit are installed in the inwall of cover lid 12
15 magnetic direction is also axial.
As shown in Figure 1, motor bearings 6 uses axial thrust bearing, bearing to receive axial force.
As shown in Figure 1, motor stator core pawl pole 1, pawl pole is installed and protected with base 3 and the overall plastic compression of coil 2, or cover
The surrounding Direct Laser Plastic Welding of lid 12 is sealed, and plastics are moulded heat-conductive insulated plastics 10.The effectively heat dispersion 5-8 of enhancing motor
Times, such that it is able to bear harsher applied at elevated temperature environment, reduce potential high temperature lower magnet demagnetization phenomenon and occur, and high temperature is internal
The infringement of portion's electronic unit.Motor shaft 7 is protected using dynamic seal ring 13, can effectively prevent corruption of the high-temperature gas to iron core and coil
Erosion, improves reliability.Motor cover 12 uses static sealing ring 11 and the double shielding of rotating shaft dynamic sealing 13, and greatly improving motor makes
Use life and reliability.Avoid the corrosion of outside possible water, hot gas, or other environmental liquids.
As shown in Figure 1, using the supporting way of single-bearing 6, motor axial length is saved；The bearing uses axial thrust axle
Hold, bearing receives axial force.Electromechanical transducer 15 effectively reduces peace using Hall sensor and the packing forms of drive circuit one
Dress space.Reduce corrosion failure probability.
The embodiment of jaw pole axial magnetic circuit brushless, permanently excited direct current motor of the invention is illustrated with reference to the accompanying drawings.
Figure it is seen that each phase winding is enclosed within each stator core pawl pole according to symmetrical mode.It is with two-phase induction motor now
For example, such as A phase coils are sequentially sleeved in the pawl pole that numbering is I, III, V, VII, B phase coils be sequentially sleeved in numbering be II, IV,
VIth, in VIII pawl pole.When A phase coils lead to direct current after by numbering be I, III, V, VII pawl pole surface produce respectively N, S, N,
The axial magnetic field of S, the magnetic field will attract rotor to turn over certain angle makes it be alignd with rotor field.If A phases are powered off, B phase coils
Logical direct current, the axial magnetic field of N, S, N, S, the axial magnetic field will be respectively produced on the pawl pole surface that numbering is II, IV, VI, VIII
Rotor will be attracted to continue to revolve through certain angle makes it be alignd with rotor field.The present invention leans against the one side peace of air gap in rotor core
Equipped with sensor magnet steel 8, for launching magnetic field, the magnetic field reflects the positional information of rotor.Hall is installed on cover lid 12
Position sensor 15, after the position sensor detects the positional information of rotor, output feedback ontrol signal to electric machine controller,
Commutated by controling winding, can cause that motor continues to rotate.And counted by sensor feedback control signal, and with
This is come the number of times that controls electric winding to commutate, you can the total angle that control rotor is rotated, such that it is able to control valve opening degree, most
Whole purpose controls flow.
If said structure single phase power supply, it is 4 that can set stator core pawl pole number, and this 4 pawl poles, 360 degree of circumference is equal
Cloth, numbering is set to I, III, V, VII.4 single-phase coils are sequentially sleeved in above-mentioned 4 pawl poles, after the logical positive electricity of winding, this 4 pawls
Pole surface produces the axial magnetic field of N, S, N, S respectively；After the sense of current for flowing through the single-phase winding changes, this 4 pawl pole tables
Face then produces the axial magnetic field of S, N, S, N.If the rotor core surface also alternate magnet steel of uniform 4 S, N.So when it is single-phase around
During group current commutation, you can realize the deflection of 90 degree of output shaft, by with the valve block on moving axis, that is, standard-sized sheet and fully closed is realized
Two kinds of valve states.The sensor that cover is covered then provides valve standard-sized sheet or fully closed accurate information.
It is spacing by setting physics simultaneously in the operation interval less than an angle of 90 degrees（General automobile valve body application corner
Less than 90 degree）, the standard-sized sheet and full-shut position of valve body are corresponded to respectively.Regulation by input signal to motor input current, and
The position signalling feedback of position sensor, by the PID control of control module, can drive valve body to turn to any desired essence
True position.The certain aperture of valve body or flow are also corresponded to simultaneously.
The said structure number of phases, is not limited to the single-phase and two-phase of citing, and stator core pawl pole number is also not necessarily limited to 4 and 8,
Dimensional space is allowed down, and the number of phases and stator core pawl pole number can be arbitrary.
The embodiment to jaw pole axial magnetic circuit brushless, permanently excited direct current motor is described above.Not office of the invention
It is limited to the example of diagram, in the range of basic structure of the invention, numerous variations can be made to structure.
Claims (4)
1. a kind of jaw pole axial magnetic circuit brushless, permanently excited direct current motor, motor stator is solid in a base surrounding Vertical Uniform
Determine pawl pole, the center line of pawl pole and the diameter parallel of rotating shaft, it is characterised in that suit coil winding in pawl pole, motor stator
Coil windings in base, base pawl pole, envelope is covered with plastic, forms barrel-shaped plastic part, separately has cover lid lid to be enclosed in barrel-shaped plastic part
On, the rotating shaft of rotor passes through stator base, vertically fixes an iron core, uniform fixed permanent magnet magnet steel on iron core, iron core
Another face center, fixes one block of sensor magnet steel, the Hall sensor phase that the sensor magnet steel is fixed with cover lid inwall
Correspondence；
The machine shaft is supported using single-bearing, and rotating shaft is provided with movable sealing structure.
2. the jaw pole axial magnetic circuit brushless, permanently excited direct current motor as described in claim 1, it is characterised in that the cover lid
, there are several snap fits port, and with the snap fit opposite position, there are several draw-in grooves barrel-shaped plastic part port, and cover lid covers barrel-shaped plastic packaging
After part, snap fit is sticked into draw-in groove.
3. the jaw pole axial magnetic circuit brushless, permanently excited direct current motor as described in claim 1, it is characterised in that the plastic
It is heat-conducting insulation material.
4. the jaw pole axial magnetic circuit brushless, permanently excited direct current motor as described in claim 1, it is characterised in that the cover lid
The barrel-shaped plastic part of lid envelope, also " O " shape sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738701.5A CN104377843B (en) | 2014-12-08 | 2014-12-08 | Sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738701.5A CN104377843B (en) | 2014-12-08 | 2014-12-08 | Sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104377843A CN104377843A (en) | 2015-02-25 |
| CN104377843B true CN104377843B (en) | 2017-05-17 |
Family
ID=52556569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410738701.5A Ceased CN104377843B (en) | 2014-12-08 | 2014-12-08 | Sealing claw pole and axial magnetic circuit permanent magnetic brushless direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104377843B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259639A1 (en) | 2019-06-25 | 2020-12-30 | Fugna Mechatronics Co., Ltd. | Brushless direct drive linear servo actuator |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337440B (en) * | 2015-11-19 | 2019-05-10 | 苏州福格纳机电有限公司 | A kind of sealing claw pole permanent magnet brushless direct current generator pedestal |
| CN106059242A (en) * | 2016-08-08 | 2016-10-26 | 深圳市利宏微形电机有限公司 | Stepping motor with brand new induction signal structure |
| CN108631535A (en) * | 2017-03-16 | 2018-10-09 | 苏州福格纳机电有限公司 | A kind of axial magnetic circuit permanent-magnet brushless DC electric machine stator improvement |
| CN113364219A (en) * | 2021-07-11 | 2021-09-07 | 陕西航空电气有限责任公司 | Rotor position detection structure for liquid-cooled brushless direct current motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06245455A (en) * | 1993-02-12 | 1994-09-02 | Tdk Corp | Flat dc motor |
| CN102694449A (en) * | 2011-03-24 | 2012-09-26 | 李贵祥 | Cage-shaped brushless direct current generator with opposite claw pole type |
| CN203589994U (en) * | 2013-11-20 | 2014-05-07 | 华中科技大学 | Axial magnetic field permanent magnet brushless DC motor |
| CN204271763U (en) * | 2014-12-08 | 2015-04-15 | 苏州福格纳机电有限公司 | Jaw pole axial magnetic circuit brushless, permanently excited direct current motor |
-
2014
- 2014-12-08 CN CN201410738701.5A patent/CN104377843B/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06245455A (en) * | 1993-02-12 | 1994-09-02 | Tdk Corp | Flat dc motor |
| CN102694449A (en) * | 2011-03-24 | 2012-09-26 | 李贵祥 | Cage-shaped brushless direct current generator with opposite claw pole type |
| CN203589994U (en) * | 2013-11-20 | 2014-05-07 | 华中科技大学 | Axial magnetic field permanent magnet brushless DC motor |
| CN204271763U (en) * | 2014-12-08 | 2015-04-15 | 苏州福格纳机电有限公司 | Jaw pole axial magnetic circuit brushless, permanently excited direct current motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259639A1 (en) | 2019-06-25 | 2020-12-30 | Fugna Mechatronics Co., Ltd. | Brushless direct drive linear servo actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104377843A (en) | 2015-02-25 |
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Decision date of declaring invalidation: 20200407 Decision number of declaring invalidation: 43902 Granted publication date: 20170517 |