CN204858928U - Big power density brushless DC motor - Google Patents
Big power density brushless DC motor Download PDFInfo
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- CN204858928U CN204858928U CN201520577624.XU CN201520577624U CN204858928U CN 204858928 U CN204858928 U CN 204858928U CN 201520577624 U CN201520577624 U CN 201520577624U CN 204858928 U CN204858928 U CN 204858928U
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- motor
- power density
- brshless
- end cap
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Abstract
The utility model discloses a big power density brushless DC motor, it includes motor shell (1), rotor subassembly and the stator module of setting in motor shell (1), be provided with multiple coils among the stator module, each coil is formed by tens of enameled wires (2) duplex winding, and through the cluster between the multiple coils, the parallelly connected armature winding that forms, the power take off orientation of using the motor is the front end, before motor shell (1), back both ends are corresponding be provided with front end housing (3) and rear end cap (4) respectively, be provided with multiunit empty special -shaped groove (5) in detail on front end housing (3), install on pivot (11) on the rotor subassembly fan blade (6), fan blade (6) are located the cavity of front end housing (3), be provided with multiunit slot (7) on rear end cap (4), be provided with in the middle part of rear end cap (4) position sensor (8). The beneficial effects of the utility model are that: it has small, light in weight, low -voltage, the big advantage of going with heat dispersion of power.
Description
Technical field
The utility model relates to brshless DC motor, particularly a kind of high power density brshless DC motor.
Background technology
The driver that brshless DC motor is made up of motor body and electronic devices and components forms, and is a kind of typical electromechanical integrated product.Brshless DC motor refers to the motor of brushless and commutator.
The rotor of common DC motor there is commutator, in the end of a thread access commutator of armature rotor winding, is embedded with permanent magnet in stator, on brush fixed stator.Dependence brush contacts with commutator and is transmitted in the armature winding of rotation by brush by electric current.
The accumulation gradually of the wearing and tearing between commutator and brush and abrasion powder will stained commutator, necessary periodic cleaning and replacing brush thereof, the electric wave that commutation spark produces can disturb other contiguous electronic equipment, therefore has the life-span of brushless motor short, has electromagnetic wave to produce.
Between the stator and rotor of brshless DC motor except bearing, there is no contact wear component, electronic power switch is relied on to control switching and the flow direction of each phase winding electric current in stator armature respectively, i.e. electronic commutation, therefore the advantage of brshless DC motor is that non-maintaining, life-span is long and do not produce electromagnetism clutter, but the drive motors of the electronic rescue winch in helicopter not only needs the advantage of above-mentioned brshless DC motor, but also in requisition for having the advantage that volume is little, lightweight and power density is large.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art, provides that a kind of volume is little, lightweight, the high power density brshless DC motor of the large and perfect heat-dissipating of power.
The purpose of this utility model is achieved through the following technical solutions: a kind of high power density brshless DC motor, it comprises motor case, be arranged on the rotor assembly in motor case and stator module, multiple coil is provided with in described stator module, each coil is by tens of enamelled wires and around being formed, and by string between multiple coil, formation armature winding in parallel, with the Power output direction of motor for front end, before described motor case, rear two ends respectively correspondence are provided with front end housing and rear end cap, described front end housing is provided with the empty special-shaped slot of many group threads, rotating shaft on described rotor assembly is provided with fan blade, fan blade is positioned at the cavity of front end housing, described rear end cap is provided with and organizes groove more, position transducer is provided with in the middle part of rear end cap.
The periphery of described motor case is provided with three groups of air-flow guiding grooves.
The empty special-shaped slot of described thread is three groups, and is evenly distributed in front end housing.
Described stator module is provided with 12 groups of coils, each group coil is made up of three coils connected in series, and each coil by 18 enamelled wires and winding become, and the enamelled wire on each coil is tied up by cotton thread.
Rotor yoke is inserted in described rotating shaft, and rotor yoke is hollow-core construction, and the side of rotor yoke is all provided with permanent magnet, and described permanent magnet is a square block and permanent magnet is rare-earth permanent magnet, and the lateral wall of square block radial direction offers an arcwall face.
Groove on described rear end cap is six groups.
The utility model has the following advantages: brshless DC motor of the present utility model, adopt specific coil winding mode, thus form low-voltage, big current and high-power output, and make the volume of stator module little, thus make the volume of motor little thus make the power density of this motor large; Front end housing is provided with the empty special-shaped slot of thread, make no matter fan blade rotates forward, reversion, air-flow flows along same direction all the time, thus ensure that the flow direction of air-flow, air-flow is flowed out after roundabout turnover in forward and backward end cap at motor, improve the utilance of air-flow, thus add the heat dispersion of motor; Motor case is provided with air-flow guide groove, and rear end cap is provided with thread dead slot, air-flow guide groove and thread dead slot all add the area of dissipation of motor, thus improve the heat dispersion of motor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that schematic diagram is looked on a left side of the present utility model;
Fig. 3 is that schematic diagram is looked on the right side of the present utility model;
Fig. 4 is coil winding schematic diagram of the present utility model;
Fig. 5 is the permanent magnet schematic cross-section in rotor assembly of the present utility model;
In figure, 1-motor case, 2-enamelled wire, 3-front end housing, 4-rear end cap, the empty special-shaped slot of 5-thread, 6-fan blade, 7-groove, 8-position transducer, 9-air-flow guiding groove, 10-arcwall face, 11-rotating shaft, 12-permanent magnet, 13-rotor yoke.
Embodiment
Be further described the utility model below in conjunction with accompanying drawing, protection range of the present utility model is not limited to the following stated:
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of high power density brshless DC motor, it comprises motor case 1, be arranged on the rotor assembly in motor case 1 and stator module, multiple coil is provided with in described stator module, each coil is by tens of enamelled wires 2 and around being formed, and by string between multiple coil, formation armature winding in parallel, with the Power output direction of motor for front end, before described motor case 1, rear two ends respectively correspondence are provided with front end housing 3 and rear end cap 4, described front end housing 3 is provided with the empty special-shaped slot 5 of many group threads, rotating shaft 11 on described rotor assembly is provided with fan blade 6, fan blade 6 is positioned at the cavity of front end housing 3, described rear end cap 4 is provided with many group grooves 7, in the present embodiment, groove 7 on described rear end cap 4 is six groups, and be distributed on rear end cap 4 in circumference, groove 7 adds the area of dissipation of rear end cap 4, improve the heat dispersion of motor, position transducer 8 is provided with in the middle part of rear end cap 4, the real time position coding of rotor is provided by position transducer 8, drive circuit controls corresponding power electronic switching break-make according to encoded position signal, thus the break-make of each phase winding electric current and the flow direction in control motor, thus realize contactless electronic commutation.
In the present embodiment, the empty special-shaped slot 5 of described thread is three groups, and be evenly distributed in front end housing 3, the periphery of described motor case 1 is provided with three groups of air-flow guiding grooves 9, air-flow guiding groove 9 adds the area of dissipation of motor case 1, be both the weight also reducing motor, the air outlet of the empty special-shaped slot 5 of each group thread aims at one group of air-flow guiding groove 9, thus make no matter no matter fan blade 6 rotates forward or reverse, air-flow enters rear end cap along same flow to through after the air-flow guiding groove 9 of motor case 1 all the time, thus make radiating airflow front, flow out after roundabout turnover in rear end cap, improve the utilance of radiating airflow, thus add the heat dispersion of motor.
In the present embodiment, as shown in Figure 4, described stator module is provided with 12 groups of coils, each group coil is made up of three coils connected in series, and each coil is by 18 enamelled wires 2 also winding one-tenth, and the enamelled wire on each coil is tied up by colligation cotton thread, adopt this coil winding mode, make coil winding consolidation, effectively reduce the volume of stator module, thus the volume of motor is reduced, and make stator module can under very low voltage, produce very large circuit, make motor have the performance of low-voltage, big current.
In the present embodiment, rotor yoke 13 is inserted in described rotating shaft 11, and rotor yoke 13 is hollow, and the side of rotor yoke 13 is all provided with permanent magnet 12, described permanent magnet is a square block and permanent magnet 12 is rare-earth permanent magnet, and the lateral wall of square block radial direction offers an arcwall face 10.
Claims (6)
1. a high power density brshless DC motor, it comprises motor case (1), be arranged on the rotor assembly in motor case (1) and stator module, it is characterized in that: in described stator module, be provided with multiple coil, each coil is by tens of enamelled wires (2) and around being formed, and by string between multiple coil, formation armature winding in parallel, with the Power output direction of motor for front end, before described motor case (1), rear two ends respectively correspondence are provided with front end housing (3) and rear end cap (4), described front end housing (3) is provided with the many groups empty special-shaped slot of thread (5), rotating shaft (11) on described rotor assembly is provided with fan blade (6), fan blade (6) is positioned at the cavity of front end housing (3), described rear end cap (4) is provided with and organizes groove (7) more, position transducer (8) is provided with in rear end cap (4).
2. a kind of high power density brshless DC motor according to claim 1, is characterized in that: the periphery of described motor case (1) is provided with three groups of air-flow guiding grooves (9).
3. a kind of high power density brshless DC motor according to claim 1, is characterized in that: the empty special-shaped slot (5) of described thread is three groups, and is evenly distributed in front end housing (3).
4. a kind of high power density brshless DC motor according to claim 1, is characterized in that: described stator module is provided with 12 groups of coils, each group coil be made up of three coils connected in series, and each coil by 18 enamelled wires (2) and winding become.
5. a kind of high power density brshless DC motor according to claim 1, it is characterized in that: in described rotating shaft (11), be inserted in rotor yoke (13), rotor yoke (13) is for hollow, the side of rotor yoke (13) is all provided with permanent magnet (12), described permanent magnet is a square block and permanent magnet (12) is rare-earth permanent magnet, and the lateral wall of square block radial direction offers an arcwall face (10).
6. a kind of high power density brshless DC motor according to claim 1, is characterized in that: the groove (7) on described rear end cap (4) is six groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577624.XU CN204858928U (en) | 2015-08-04 | 2015-08-04 | Big power density brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577624.XU CN204858928U (en) | 2015-08-04 | 2015-08-04 | Big power density brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204858928U true CN204858928U (en) | 2015-12-09 |
Family
ID=54749440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520577624.XU Active CN204858928U (en) | 2015-08-04 | 2015-08-04 | Big power density brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204858928U (en) |
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2015
- 2015-08-04 CN CN201520577624.XU patent/CN204858928U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |