CN102593990A - Slotless permanent magnet brushless motor structure - Google Patents
Slotless permanent magnet brushless motor structure Download PDFInfo
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- CN102593990A CN102593990A CN2012101036726A CN201210103672A CN102593990A CN 102593990 A CN102593990 A CN 102593990A CN 2012101036726 A CN2012101036726 A CN 2012101036726A CN 201210103672 A CN201210103672 A CN 201210103672A CN 102593990 A CN102593990 A CN 102593990A
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Abstract
The invention relates to a brushless motor structure, specifically to a slotless permanent magnet brushless motor structure, which consists of a motor housing, a magnetic ring, a winding stator, a permanent magnet rotor, a silicon steel stack and a rotary shaft from outside to inside respectively. Each stator coil consists of two semicircular stator frameworks with circular windings, the frame is provided with a hollow cavity in the middle, and the permanent magnet rotor is wrapped in a hollow cavity of the stator coil and rotates in the hollow cavity. Or, the stator coil is a hollow cavity coil formed by coiling the windings and being formed by high temperature glue. After the two hollow cavity coils are combined, the permanent magnet rotor is installed in the hollow cavity and a gap is left between the permanent magnet rotor and the stator coil and the permanent magnet rotor can rotate within the hollow cavity. The slotless permanent magnet brushless motor structure creatively applies the structure which generates torque by the action of the inner magnetic field of the stator and the rotor, and the utilization ratio of magnetic energy is much higher than that of the conventional motor structure.
Description
Technical field
The present invention relates to brushless motor structure, be specially a kind of slotless permanent magnetic brushless structure.
Background technology
Traditional slotless electric machines structure is main with the drag cup electric machine structure mainly, because do not contain wound core, leakage field is serious, and air-gap field intensity is severe in the inner decay of stator coil, and the magnet utilance is not high, is not suitable for doing the large scale heavy-duty motor; And its wire winding is quite complicated, and production efficiency is extremely low, requires tooling device very harsh, so production difficulty and cost are all higher.
Summary of the invention
The present invention is directed to the problems referred to above, design a kind of slotless permanent magnet motor, technology, simple in structure is fit to the large and middle size motor manufacturing.
Design of the present invention is following: a kind of slotless permanent magnetic brushless structure, ecto-entad is made up of motor casing, magnetic guiding loop, wound stator, p-m rotor, silicon steel laminations and rotating shaft respectively.Each stator coil is made up of the semicircle stator skeleton that 2 lobes have ring winding, is cavity in the middle of the skeleton, and p-m rotor is wrapped in the cavity of stator coil, and can in cavity, rotate.Perhaps stator coil is that coiling encompasses the cavity coil, and by the typing of high temperature glue, 2 lobe cavity coils are contained in p-m rotor in the cavity after merging, and are gapped between p-m rotor and the stator coil, can in cavity, rotate again.The winding structure of stator coil also comprises the racetrack coiled wire-wound coil.The gap is left in the 2 lobe stator skeletons of stator coil or the junction of 2 lobe cavity coils, and the armature spindle of p-m rotor passes the gap, but and normal rotation.
The active force of stator coil and p-m rotor forms at the wound stator cavity inside.A stator coil and a p-m rotor assembling form an assembled unit, and each unit constitutes a phase of motor.Three phase electric machine is made up of three assembled units, and by the armature spindle series connection, the p-m rotor magnetic pole of each unit is at radial deflection 120 degree.According to the demands of different of motor phase, the quantity of assembled unit is set.Separate with silicon steel laminations between the assembled unit.The gap of each unit that stator coil and p-m rotor combine is axially connecting, and is beneficial to pick out lead-in wire and Hall element is installed.
P-m rotor by the rotor skeleton be wrapped in outer permanent magnet and constitute, the centre has an armature spindle.2 semicircle stator skeleton make-ups on the wound stator, the gap is left in the junction, and the gap is greater than armature spindle, and the armature spindle of p-m rotor passes the gap, but and normal rotation.Lean on the stator skeleton marginal position at gap location in addition Hall element is installed, be used to detect the motor phase sequence.The gap of each unit that stator coil and p-m rotor combine is axially connecting, and is beneficial to pick out lead-in wire and Hall element is installed.
Rotor of the present invention is inner at stator coil; After the stator coil energising, the magnetic field of its generation is inner concentrated and even in coiling, and leakage field is relatively very low; Initiative utilization the structure of stator interior magnetic field with rotor effect generation moment of torsion, more much higher to the utilance of magnetic energy than conventional motors structure.Coiling is very simple in addition, only is a kind of ring winding mode, need not the complicated procedures of forming tooling device, reduces the production difficulty, can greatly enhance productivity; This new structure can be made more large scale and more powerful slotless electric machines simultaneously, has broken through the power and the dimension limit of general drag cup motor fully.
Description of drawings
Fig. 1 is the axial cross section sketch map of three phase electric machine;
Fig. 2 is the radial section sketch map figure of three phase electric machine;
Fig. 3 is the structural representation of stator coil and p-m rotor;
Fig. 4 is the structural representation of wire winding ring and p-m rotor;
Fig. 5 is a Distribution of Magnetic Field simulation drawing of the present invention;
Wherein 1---motor casing, 2---magnetic guiding loop, 3---coiling, 4---stator skeleton, 5---permanent magnet, 6---the rotor skeleton, 7---armature spindle, 8---silicon steel laminations, 9---Hall element, 10---wire winding ring.
Embodiment
Below in conjunction with specific embodiment and Figure of description the present invention is described further.Specific embodiment described herein is only in order to explaining the present invention, and is not used in qualification the present invention.
Embodiment: as shown in Figure 1, three phase electric machine, ecto-entad are made up of motor casing, magnetic guiding loop, wound stator, p-m rotor, silicon steel laminations and rotating shaft respectively.Each wound stator is made up of 2 semicircle stator skeletons that have ring winding as shown in Figures 2 and 3, can select the high-temperature resistance plastice mold injection molding for use, and the stator skeleton of moulding is the semi-circular structure of internal cavities, and the outside annular of pressing is around last coiling.Two stator skeletons are relative, form the full circle of a cavity, and p-m rotor is wrapped in the internal cavities of wound stator, and is gapped between p-m rotor and the stator coil, and p-m rotor can rotate in cavity.The winding structure of stator coil also comprises the racetrack coiled wire-wound coil.The gap is left in the junction of 2 stator skeletons of stator coil, and the armature spindle of p-m rotor passes the gap, but and normal rotation.
A wound stator and a p-m rotor assembling form a combination, and the combination of 3 wound stators and p-m rotor is installed in the motor casing, and by the armature spindle series connection, the p-m rotor magnetic pole of each unit is at radial deflection 120 degree.Separate with silicon steel laminations between each combination, the motor casing inwall is installed magnetic guiding loop, selects for use punching silicon-steel or magnetic conduction band to roll, and this magnetic guiding loop is used to form the magnetic circuit passage on the one hand, is used for armoured magnetic field to the motor casing external radiation on the one hand.
P-m rotor by the rotor skeleton be wrapped in outer permanent magnet and constitute, the centre has an armature spindle.2 semicircle stator skeleton make-ups on the wound stator, the gap is left in the junction, leans on the stator skeleton marginal position at gap location Hall element is installed, and is used to detect the motor phase sequence.The existence in gap also makes the lead-in wire of motor arrange more convenient.
Stator coil is chosen enamelled wire by design parameter, and last machine coiling adopts simple ring winding mode to get final product to stator skeleton.
In addition,, also can not need stator skeleton, adopt directly coiled wire winding ring on a semicircle mould of enamelled wire, finalize the design with high-temp glue again, form the semicircle wire winding ring of cavity if micro-machine is made, according to the appellate mode assembling, as shown in Figure 4 again.
When making the motor of out of phase accordingly, wound stator and p-m rotor combination that respective numbers is installed in motor casing get final product, and all the other package assemblies are identical with the above.
The characteristic of design most critical of the present invention is: motor torsion is by the internal magnetic field of stator coil and p-m rotor effect and produce.See Fig. 5: the hot-wire coil internal magnetic field has characteristics concentrated, distribution uniform, and inner rotator is according to the magnetic resistance minimum principle, to the minimum direction rotation of magnetic resistance.
Electric machine structure of the present invention; The structure of stator coil internal magnetic field that possessed the plurality of advantages (little, the no slot effect of iron loss, efficient high) of iron-core less motor, the coiling complexity of having simplified traditional stator simultaneously greatly and initiative utilization with rotor effect generation moment of torsion; Strengthened the magnetic energy utilization rate greatly, really accomplished simplification technology, increase power of motor density, raised the efficiency with energy-conservation.
Claims (7)
1. slotless permanent magnetic brushless structure; Ecto-entad is made up of motor casing, magnetic guiding loop, stator coil, p-m rotor, silicon steel laminations and rotating shaft respectively, it is characterized in that, p-m rotor is wrapped in the internal cavities of stator coil; Stator coil is made up of 2 lobe wire winding rings; Certain interval is left in the junction, comprises stator coil and the p-m rotor combination more than 1 or 1 in the motor, separates with silicon steel laminations between the combination.
2. a kind of slotless permanent magnetic brushless structure according to claim 1, it is characterized in that p-m rotor by the rotor skeleton be wrapped in outer permanent magnet and constitute, the centre has an armature spindle.
3. a kind of slotless permanent magnetic brushless structure according to claim 1; The every lobe coiling that it is characterized in that stator coil on a skeleton, is a cavity in the middle of the skeleton separately, and can pack into p-m rotor and rotor can rotate in cavity; Perhaps stator coil is that coiling encompasses the cavity coil; By the typing of high temperature glue, 2 cavity coils merge the back and form internal cavities again, and rotor is contained in the cavity and can rotates.
4. a kind of slotless permanent magnetic brushless structure according to claim 3 is characterized in that the winding structure of stator coil also comprises the racetrack coiled wire-wound coil.
5. a kind of slotless permanent magnetic brushless structure according to claim 3 is characterized in that the gap is left in 2 lobe wire winding ring junctions of described stator coil, and the armature spindle of p-m rotor passes the gap, but and normal rotation.
6. a kind of slotless permanent magnetic brushless structure according to claim 2; It is characterized in that stator coil, add its inner rotatable p-m rotor, form a unit; Each unit constitutes a phase of motor; Three phase electric machine is made up of three unit, and by the rotating shaft series connection, the rotor magnetic pole of each unit is at radial deflection 120 degree.
7. a kind of slotless permanent magnetic brushless structure according to claim 5 is characterized in that the gap of each unit that stator coil and p-m rotor combine is axially connecting, and is beneficial to pick out lead-in wire and Hall element is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101036726A CN102593990A (en) | 2012-04-11 | 2012-04-11 | Slotless permanent magnet brushless motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101036726A CN102593990A (en) | 2012-04-11 | 2012-04-11 | Slotless permanent magnet brushless motor structure |
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| CN102593990A true CN102593990A (en) | 2012-07-18 |
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| CN2012101036726A Pending CN102593990A (en) | 2012-04-11 | 2012-04-11 | Slotless permanent magnet brushless motor structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105874687A (en) * | 2015-12-23 | 2016-08-17 | 深圳市东方美信电子科技有限公司 | Permanent magnetic brushless motor |
| CN106921235A (en) * | 2015-12-25 | 2017-07-04 | 佟宪良 | Split type high-speed electric expreess locomotive |
| CN111293848A (en) * | 2014-10-23 | 2020-06-16 | 磁转换技术股份有限公司 | Slotless brushless DC motor/actuator |
-
2012
- 2012-04-11 CN CN2012101036726A patent/CN102593990A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293848A (en) * | 2014-10-23 | 2020-06-16 | 磁转换技术股份有限公司 | Slotless brushless DC motor/actuator |
| US11394256B2 (en) | 2014-10-23 | 2022-07-19 | Magswitch Technology Inc. | Slotless brushless DC motor / actuator |
| CN111293848B (en) * | 2014-10-23 | 2022-08-16 | 磁转换技术股份有限公司 | Slotless brushless DC motor/actuator |
| CN105874687A (en) * | 2015-12-23 | 2016-08-17 | 深圳市东方美信电子科技有限公司 | Permanent magnetic brushless motor |
| WO2017107099A1 (en) * | 2015-12-23 | 2017-06-29 | 深圳市东方美信电子科技有限公司 | Permanent magnet brushless motor |
| CN105874687B (en) * | 2015-12-23 | 2019-03-19 | 深圳市东方美信电子科技有限公司 | Permanent magnetic brushless |
| CN106921235A (en) * | 2015-12-25 | 2017-07-04 | 佟宪良 | Split type high-speed electric expreess locomotive |
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Application publication date: 20120718 |