CN104377843A - 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
- CN104377843A CN104377843A CN201410738701.5A CN201410738701A CN104377843A CN 104377843 A CN104377843 A CN 104377843A CN 201410738701 A CN201410738701 A CN 201410738701A CN 104377843 A CN104377843 A CN 104377843A
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- CN
- China
- Prior art keywords
- magnetic circuit
- motor
- current motor
- axial magnetic
- direct current
- 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.)
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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, discarded recirculation, turbocharging, the control of the valves such as eddy current control.
Background technology
Along with the raising of national economy and living standards of the people, the recoverable amount of various vehicle is in growth trend fast year by year, and the electrification of automotive engine control constantly advances, and substitutes original simple and mechanical or hydraulic control.Electrified accurate control, significantly can improve the performance of automobile, reduces oil consumption, simultaneously control discharge.And the electrified control of these valve bodies, need accurate electronic product to implement to control, and this motor must can bear engine environmental high temperature, vibrations, discarded erosion, ensure that the long-life uses simultaneously.
The electronic unit of motor internal is Sensitive Apparatus, is very easily corroded damage, and the meeting corrosion of iron core surface, internal bearings can be polluted or corrosion, badly influences the life and reliability of motor.Valve drive motors operating mode duration time-bands carries work, and in the airtight situation of motor, if do not carry out thermal design and radiating treatment, electric machine temperature rise can make magnet steel magnetic property and coil insulation decline, and even causes high-temperature electric machine to lose efficacy.Automobile engine periphery valve body installing space is limited simultaneously, needs to control whole motor size.
Motor adopts conventional radial magnetic structure, and need two cover bearings to support, add common mounting frame for sensor, motor can be long especially, is unfavorable for the integrated of system.
And if use brush motor is arranged, not only brush motor cannot meet the requirement of engine high life, and he needs gear combination moment of torsion to change, and produces extra layout difficulty and quality control complexity.
Summary of the invention
For the motor Special use demand that above-mentioned automobile engine is applied, traditional structure motor, can not meet the demands, the invention provides a kind of jaw pole axial magnetic circuit brushless, permanently excited direct current motor, this motor stator is in a base surrounding Vertical Uniform fixed claw pole, the center line of pawl pole and the axis being parallel of rotating shaft, pawl extremely goes up suit coil winding, the base of motor stator, the coil windings that base pawl is extremely gone up, envelope is covered with plastic, form barrel-shaped plastic part, separately there is cover cap cap seal on barrel-shaped plastic part, the rotating shaft of rotor is through stator base, vertically fix an iron core, even fixed permanent magnet magnet steel on iron core, another center, face of iron core, fix one block of transducer magnet steel, this transducer magnet steel is corresponding with the Hall element that cover cap inwall is fixed.
Described epitrochanterian magnet steel is axial charging, and magnet steel surface forms the magnetic field of N-S-N-S..... cross-distribution, and in air gap, magnetic direction is axially.
Described motor stator pawl very 2n, n=1,2,3 ..., the coil windings that pawl is extremely gone up, joins end to end, and forms monophase machine, or, coil is divided into two-phase, three-phase, four phases and five phases.
Described transducer magnet steel is axial charging, axially forms N-S pole on two annular magnetic steel faces.
Described machine shaft adopts single-bearing to support, and rotating shaft is provided with movable sealing structure.
Described cover port, has several snap fit, and with this snap fit opposite position, barrel-shaped plastic part port has several draw-in groove, and after cover cap covers barrel-shaped plastic part, snap fit sticks in draw-in groove.
Described plastic is heat-conducting insulation material.
The barrel-shaped plastic part of described cover cap cap seal, also has " O " shape sealing ring.
Advantage of the present invention is, motor of the present invention has carried out dual-seal design and heat conductive design, and environmental suitability is strong, and reduce corrosion failure probability, reliability is high, and the life-span is long; Motor of the present invention adopts axial magnetic circuit, and magnet steel active area is large, and air gap flux density is high, and moment is large, and efficiency is high, and dimensional space is little simultaneously, and the system integration is strong; Motor of the present invention adopts claw-pole structure, by number and the control impuls number of control claw pole, effectively can control the opening angle of different valve, strong with the control valve suitability of different automobile types.Bearing of the present invention adopts axial thrust bearing, and bearing is by axial force.Electromechanical transducer adopts the packing forms of Hall element and drive circuit one, effectively reduces installing space.Wide market.
Accompanying drawing explanation
Accompanying drawing 1 is structure cutaway view of the present invention.
Accompanying drawing 2 is motor stator structure stereograms.
Accompanying drawing 3 is rotor three-dimensional structure diagrams.
Accompanying drawing 4 is rotor stereochemical structure another side stereograms.
Accompanying drawing 5 is transducer magnet steel magnetizing direction schematic diagrames.
Number in the figure illustrates:
1-pawl pole; 2-coil; 3-base; 4-rotor permanent magnet magnet steel; 5-rotor core; 6-bearing; 7-rotating shaft; 8-transducer magnet steel; 9-coil rack, 10-heat-conducting plastic, 11-static sealing ring, 12-cover cap, 13-dynamic seal ring, 14-contact pin, 15-Hall element, 16-mounting screw, 17-snap fit.
Embodiment
Please read shown in accompanying drawing, motor stator of the present invention is in a base 3 surrounding Vertical Uniform fixed claw pole 1, the center line of pawl pole 1 and the axis being parallel of rotating shaft 7, suit coil winding 2 on pawl pole 1, the base 3 of motor stator, coil windings 2 on base pawl pole 1, envelope is covered with plastic 10, form barrel-shaped plastic part, separately there is cover cap 12 cap seal on barrel-shaped plastic part, the rotating shaft 7 of rotor is through stator base 3, vertically fix an iron core 5, even fixed permanent magnet magnet steel 4 on iron core 5, another center, face of iron core 5, fix one block of transducer magnet steel 8, this transducer magnet steel 8 is corresponding with Hall element 15 fixing inside cover cap 12, the transducer that the present invention adopts is without pcb board structure, integral packaging Hall element, avoid general pcb board soft copy exposure failure risk in the environment, and it is more compact integrated.
Described epitrochanterian magnet steel 4 is axial charging, and magnet steel 4 surface forms the magnetic field of N-S-N-S..... cross-distribution, and in air gap, magnetic direction is axially.
Described motor stator pawl pole 1 is 2n, n=1,2,3 ..., the coil windings 2 on pawl pole 1, joins end to end, and forms one-way motors, or, coil is divided into two-phase, three-phase, four phases and five phases.
Described transducer magnet steel 8 is axial chargings, axially forms N-S pole on two annular magnetic steel faces.
Described machine shaft 7 adopts single-bearing to support, and rotating shaft 7 is provided with movable sealing structure 13.
Described cover cap 12 port, has several snap fit 17, and with this snap fit 17 opposite position, barrel-shaped plastic part port has several draw-in groove, and after cover cap 12 covers barrel-shaped plastic part, snap fit 17 sticks in draw-in groove.
Described plastic 10 is heat-conducting insulation material, and be such as but not limited to heat conductive insulating PA66 and add glass, heat conductive insulating PA46 adds glass, heat conductive insulating PPS (PBT, PA6T ...) add glass etc.
The barrel-shaped plastic part of described cover cap 12 cap seal, also has " O " shape sealing ring 11.
Stator core pawl number of poles is 2n, (n=1,2,3 ... n is arbitrary integer); Coil is enclosed within each claw pole stator successively (shown in Fig. 2), and all coils can join end to end formation monophase machine, also coil can be divided into 2 phases, 3 phases (n is the multiple of 3), 4 phases (n is the multiple of 4), 5 phases (n is the multiple of 5), by that analogy;
As shown in Figure 3, rotor permanent magnet magnet steel 4 is bonded on rotor core 5, claw pole stator 1, and base 3 and rotor core 5 are the soft magnetic material such as silicon steel or magnetic links; Stator core pawl pole 1 and base 3 integrally can process for monoblock soft magnetic material, also can shape rear linking respectively.
Shown in Fig. 4, lean against the bonding transducer magnet steel 8 of air gap one side at rotor core 5.
Shown in Fig. 1, install Hall element testing circuit 15 at cover cap 12 inwall, transducer magnet steel 8 is also axial to the magnetic direction of testing circuit 15.
Shown in Fig. 1, motor bearings 6 adopts axial thrust bearing, and bearing is by axial force.
Shown in Fig. 1, the overall plastic compression protection of motor stator core pawl pole 1, pawl pole installation base 3 and coil 2, or the sealing of cover cap 12 surrounding Direct Laser Plastic Welding, plastics are moulded heat-conductive insulated plastics 10.The heat dispersion 5-8 of effective enhancing motor doubly, thus can bear harsher applied at elevated temperature environment, reduce potential high temperature lower magnet demagnetization phenomenon and occur, and high temperature is to the infringement of internal electrical components.Motor shaft 7 adopts dynamic seal ring 13 to protect, and high-temperature gas effectively can be prevented the corrosion of iron core and coil, improve reliability.Motor cover 12 adopts static sealing ring 11 and rotating shaft movable sealing 13 double shielding, greatly improves motor useful life and reliability.Avoid outside possible water, hot gas, or the corrosion of other environmental liquids.
Shown in Fig. 1, adopt single-bearing 6 supporting way, save motor axial length; This bearing adopts axial thrust bearing, and bearing is by axial force.Electromechanical transducer 15 adopts the packing forms of Hall element and drive circuit one, effectively reduces installing space.Reduce corrosion failure probability.
The example of jaw pole of the present invention axial magnetic circuit brushless, permanently excited direct current motor is described with reference to the accompanying drawings.As can be seen from Figure 2, each phase winding is enclosed within each stator core pawl according to symmetrical mode and extremely goes up.Now for two-phase induction motor, extremely go up as A phase coil is enclosed within the pawl being numbered I, III, V, VII successively, B phase coil is enclosed within the pawl being numbered II, IV, VI, VIII successively and extremely goes up.After A phase coil leads to direct current, extremely produce the axial magnetic field of N, S, N, S respectively in surface by the pawl being numbered I, III, V, VII, attraction rotor is turned over certain angle by this magnetic field makes it align with rotor field.If the power-off of A phase, B phase coil leads to direct current, and extremely produce the axial magnetic field of N, S, N, S respectively in surface by the pawl being numbered II, IV, VI, VIII, attraction rotor is continued to revolve through certain angle by this axial magnetic field makes it align with rotor field.The one side that the present invention leans against air gap at rotor core is provided with transducer magnet steel 8, and for launching magnetic field, this magnetic field reflects the positional information of rotor.Cover cap 12 is provided with hall position sensor 15, and after this position transducer detects the positional information of rotor, output feedback ontrol signal, to electric machine controller, is commutated by controlled winding, and motor can be made to continue to rotate.And by counting sensor feedback control signal, and the number of times of electric winding commutation is controlled with this, the total angle of rotor turns can be controlled, thus can by-pass valve control opening degree, final purpose controls flow.
If said structure single phase power supply, then can set stator core pawl number of poles is 4, this 360 degree, 4 pawl poles circumference uniform distribution, and numbering is decided to be I, III, V, VII.4 single-phase coils are enclosed within above-mentioned 4 pawls successively and extremely go up, and after winding leads to positive electricity, these 4 pawls extremely surface produce the axial magnetic field of N, S, N, S respectively; After the sense of current flowing through this single-phase winding changes, these 4 pawls extremely surface then produce the axial magnetic field of S, N, S, N.If the magnet steel that rotor core surperficial also uniform 4 S, N replace.Like this when single-phase winding current commutation, the deflection of output shaft 90 degree can be realized, by the valve block on band moving axis, that is achieve standard-sized sheet and full cut-off two kinds of valve states.Transducer on cover cap then provides the accurate information of valve standard-sized sheet or full cut-off.
Simultaneously in the operation interval being less than an angle of 90 degrees, by setting physics spacing (general automobile valve body application corner is less than 90 degree), the standard-sized sheet of the corresponding valve body of difference and full-shut position.By the adjustment of input signal to motor input current, and the position signalling feedback of position transducer, controlled by the PID of control module, valve body can be driven to turn to the exact position of any needs.Also the aperture that corresponding valve body is certain simultaneously or flow.
The said structure number of phases, be not limited to the single-phase and two-phase of illustrating, stator core pawl number of poles is also not limited to 4 and 8, and under dimensional space allows, the number of phases and stator core pawl number of poles can be arbitrary.
Above the embodiment of jaw pole axial magnetic circuit brushless, permanently excited direct current motor is described.The present invention is not limited to illustrated example, within the scope of basic structure of the present invention, can make numerous variations to structure.
Claims (8)
1. a jaw pole axial magnetic circuit brushless, permanently excited direct current motor, is characterized in that, motor stator be
One base surrounding Vertical Uniform fixed claw pole, the center line of pawl pole and the axis being parallel of rotating shaft, pawl extremely goes up suit coil winding, the coil windings that the base of motor stator, base pawl are extremely gone up, envelope is covered with plastic, form barrel-shaped plastic part, separately there is cover cap cap seal on barrel-shaped plastic part, the rotating shaft of rotor is through stator base, vertically fix an iron core, even fixed permanent magnet magnet steel on iron core, another center, face of iron core, fix one block of transducer magnet steel, this transducer magnet steel is corresponding with the Hall element that cover cap inwall is fixed.
2. by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described epitrochanterian magnet steel is axial charging, and magnet steel surface forms the magnetic field of N-S-N-S..... cross-distribution, and in air gap, magnetic direction is axially.
3., by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described motor stator pawl very 2n, n=1,2,3 ..., the coil windings that pawl is extremely gone up, joins end to end, form one-way motors, or, coil is divided into two-phase, three-phase, four phases and five phases.
4. by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described transducer magnet steel is axial charging, axially forms N-S pole on two annular magnetic steel faces.
5. by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described machine shaft adopts single-bearing to support, and rotating shaft is provided with movable sealing structure.
6., by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described cover port, have several snap fit, with this snap fit opposite position, barrel-shaped plastic part port has several draw-in groove, after cover cap covers barrel-shaped plastic part, snap fit sticks in draw-in groove.
7., by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, described plastic is heat-conducting insulation material.
8. by jaw pole according to claim 1 axial magnetic circuit brushless, permanently excited direct current motor, it is characterized in that, the barrel-shaped plastic part of described cover cap cap seal also having " 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 true CN104377843A (en) | 2015-02-25 |
| CN104377843B CN104377843B (en) | 2017-05-17 |
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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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337440A (en) * | 2015-11-19 | 2016-02-17 | 苏州福格纳机电有限公司 | Sealing claw pole permanent magnet brushless DC motor base |
| 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 |
| US11923744B2 (en) | 2019-06-25 | 2024-03-05 | Fugna Mechatronics Co., Ltd. | Brushless direct drive linear servo actuator |
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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337440A (en) * | 2015-11-19 | 2016-02-17 | 苏州福格纳机电有限公司 | Sealing claw pole permanent magnet brushless DC motor base |
| 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 |
| US11923744B2 (en) | 2019-06-25 | 2024-03-05 | Fugna Mechatronics Co., Ltd. | Brushless direct drive linear servo actuator |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104377843B (en) | 2017-05-17 |
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