CN208904781U - It is a kind of for improving the stator structure of motor radiating ability - Google Patents
It is a kind of for improving the stator structure of motor radiating ability Download PDFInfo
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- CN208904781U CN208904781U CN201821725323.7U CN201821725323U CN208904781U CN 208904781 U CN208904781 U CN 208904781U CN 201821725323 U CN201821725323 U CN 201821725323U CN 208904781 U CN208904781 U CN 208904781U
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- stator
- improving
- radiating ability
- motor radiating
- motor
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Abstract
The utility model discloses a kind of for improving the stator structure of motor radiating ability, comprising: stator core, stator coil, stretching screw and electric motor end cap；The stator core end face is provided with circumferentially uniformly distributed stator slot, stretching screw hole, and the edge of stator core is circumferentially evenly equipped with dentalation；The stator coil is inlaid in stator slot；The stretching screw passes through the stretching screw hole of stator core end face, and electric motor end cap is made to be connected with stator core.The purpose that the utility model may be implemented enhancing motor radiating ability, reduce motor temperature rise.
Description
Technical field
The utility model belongs to permanent magnet synchronous motor technical field more particularly to a kind of for improving motor radiating ability
Stator structure.
Background technique
Permanent magnet synchronous motor is due to a series of its superior performance, such as high-efficient, speed-regulating range width, power density in recent years
It is high, response is fast, precision high, low speed performance is good etc. and Development of Power Electronic Technology, the reduction of permanent-magnet material cost exist
It is widely used in every field, especially some higher occasions of driveability, nearly all making without exception at present
With PMSM Drive System.The heat dissipation problem of permanent magnet synchronous motor is not special compared to other kinds of drive system
Not Tu Chu, be still one but in some special occasions, such as space flight servo, aircraft servo, stratosphere aerostatics propulsion system
The major issue for needing to solve.
The power density and torque density of PMSM Drive System are improved, can be entered in terms of following three
Hand: on the one hand, the selection of permanent magnet synchronous motor rotor pole slot cooperation can be optimized, the loss of optimization permanent magnet synchronous motor can be changed
It is distributed between loss and fixed loss, improves the efficiency of permanent magnet synchronous motor.On the other hand can optimize permanent magnet synchronous motor with
The cooperation for controlling driver, improves the overall efficiency of PMSM Drive System.Finally, being improved forever by structure optimization
The heat-sinking capability of magnetic-synchro motor reduces magneto temperature rise.
Conventional motors stator structure to form stator core by laminating as shown in Figure 1, be provided with stator slot on stator punching,
Stator coil is embedded in stator slot, and stator core is pressed into the housing.
There is utility model to disclose no base motor, but only two end caps are connected by stretching screw, does not include stator
Iron core, and stator core tightly passes through seam allowance and connect with end cap, and without the radiator structure for increasing heat dissipation area.
Utility model content
The technical issues of the utility model solves is: having overcome the deficiencies of the prior art and provide a kind of for improving motor
The stator structure of heat-sinking capability achievees the purpose that the power density and torque density that improve PMSM Drive System.
The utility model aim is achieved through the following technical solutions:
It is a kind of for improving the stator structure of motor radiating ability, comprising: stator core, stator coil, stretching screw and
Electric motor end cap；
The stator core end face is provided with circumferentially uniformly distributed stator slot, stretching screw hole and heat release hole, the side of stator core
Edge is circumferentially evenly equipped with dentalation, as the first radiation tooth；The stator coil is inlaid in stator slot；The stretching screw is worn
The stretching screw hole for crossing stator core end face, makes electric motor end cap be connected with stator core.
The stator odontoid of the stator core is parallel teeth, and the facewidth of the stator tooth is the one third of tooth pitch to three
/ bis-.
The stretching screw hole number is two to three times of stator slot quantity.
The stretching screw quantity is equal with the quantity in stretching screw hole.
The quantity of the heat release hole is equal with the quantity in stretching screw hole.
The heat release hole inner wall is circumferentially evenly equipped with dentalation, as the second radiation tooth.
The second heat dissipation tooth height value range is 3~6mm.
The quantity of the stator slot is 9.
The material of the stator core is silicon steel sheet, and the material of the stator coil is enamel insulated round copper wire, the tension spiral shell
The material of bar is No. 45 steel, and the material of the electric motor end cap is aluminium alloy.
The utility model has the following beneficial effects: compared with prior art
1) in electric machine structure described in the utility model without electric machine stand, stator winding and stator iron in motor operation course
The heat that core generates directly carries out heat exchange with extraneous medium by heat release hole and iron core outer circle, avoids machine in ordinary motor structure
Motor radiating ability caused by the air dielectric capacity of heat transmission is low in air gap between seat and stator core reduces.
2) motor stator punching outer circle described in the utility model is provided with the second radiation tooth, increases motor radiating area,
Further increase the ventilation and heat ability of motor.
3) motor stator punching described in the utility model is provided with heat release hole, further increases the ventilation and heat energy of motor
Power.
4) motor stator punching described in the utility model opens heat dissipation bore edges and is provided with the second radiation tooth, increases motor
Heat dissipation area further increases the ventilation and heat ability of motor.
5) electric machine structure described in the utility model is without electric machine stand, without consider in traditional structure motor electric machine stand with
The problems of mechanical strength of stator core cooperation, can reduce motor volume under the conditions of equal performance, reduce motor weight, improve floating
The mission payload amount of device.
6) motor stator yoke described in the utility model portion's magnetic circuit is wider compared with traditional structure motor, same magnetic density situation
Under can reduce stator yoke thickness, reduce motor weight, improve the mission payload amount of aerostatics.
Detailed description of the invention
Fig. 1 is the schematic diagram of traditional permanent-magnetic synchronous motor stator structure；
Fig. 2 is the radial schematic diagram of the utility model permanent magnetic synchronous motor structure；
Fig. 3 is the axial schematic diagram of the utility model permanent magnetic synchronous motor structure.
Specific embodiment
The utility model electric machine structure mechanical strength is more preferable, and heat-sinking capability is stronger.
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Fig. 2, the utility model is a kind of for improving the stator structure of motor radiating ability, comprising: stator core
1, stator coil 2, stretching screw 3 and electric motor end cap 4；1 end face of stator core is provided with circumferentially uniformly distributed stator slot 5, tenses
Screw hole 6 and heat release hole 7, the edge of stator core 1 are circumferentially evenly equipped with dentalation, as the first radiation tooth 8, increase motor
Heat dissipation area further increases the ventilation and heat ability of motor.Stator coil 2 is inlaid in stator slot 5；The stretching screw 3
Across the stretching screw hole 6 of 1 end face of stator core, electric motor end cap 4 is made to be connected with stator core 1.As shown in figure 3, rotor 11
By connecting between bearing with electric motor end cap 4, the heat that stator winding and stator core 1 generate in motor operation course is logical at both ends
It crosses heat release hole 7 and iron core outer circle and directly carries out heat exchange with extraneous medium, avoid base and stator core 1 in ordinary motor structure
Between motor radiating ability caused by the air dielectric capacity of heat transmission is low in air gap reduce.
10 shape of stator tooth of stator core 1 is parallel teeth, the facewidth of the stator tooth 10 be the one third of tooth pitch extremely
2/3rds, preferably half.6 quantity of stretching screw hole is two to three times of 5 quantity of stator slot, preferably
Twice.3 quantity of stretching screw is equal with the quantity in stretching screw hole 6.The quantity phase of the quantity of heat release hole 7 and stretching screw hole 6
Deng.7 inner wall of heat release hole is circumferentially evenly equipped with dentalation, as the second radiation tooth 9.Second radiation tooth, 9 height value range be 3~
6mm.The material of stator core 1 is silicon steel sheet, and the material of the stator coil 2 is enamel insulated round copper wire, the material of the stretching screw 3
Material is No. 45 steel, and the material of the electric motor end cap 4 is aluminium alloy.
Embodiment 1
The diameter of stretching screw 3 is 12mm, and the quantity of stator slot 5 is 9, and 6 quantity of stretching screw hole is 18, equally
, 3 quantity of stretching screw is 18, and 7 quantity of heat release hole is 18.The outer diameter of the utility model stator structure is 400m, internal diameter
For 260mm, axial overall length 400mm, the outer diameter of rotor 11 is 257mm.
The content being not described in detail in the utility model specification belongs to the well-known technique of professional and technical personnel in the field.
Claims (10)
1. a kind of for improving the stator structure of motor radiating ability characterized by comprising stator core (1), stator coil
(2), stretching screw (3) and electric motor end cap (4)；
Stator core (1) end face is provided with circumferentially uniformly distributed stator slot (5) and stretching screw hole (6), the stator core (1)
Edge be circumferentially evenly equipped with dentalation, as the first radiation tooth (8)；The stator coil (2) is inlaid in stator slot (5)；
The stretching screw (3) passes through the stretching screw hole (6) of stator core (1) end face, makes electric motor end cap (4) and stator core (1)
It is connected.
2. according to claim 1 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described fixed
The stator tooth (10) of sub- iron core (1) is parallel teeth, and the facewidth of the stator tooth (10) is the one third of tooth pitch to 2/3rds.
3. according to claim 1 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described fixed
Sub- iron core (1) end face is also provided with heat release hole (7).
4. according to claim 3 a kind of for improving the stator structure of motor radiating ability, which is characterized in that the drawing
Tight screw hole (6) quantity is two to three times of stator slot (5) quantity.
5. according to claim 4 a kind of for improving the stator structure of motor radiating ability, which is characterized in that the drawing
Tight screw rod (3) quantity is equal with the quantity of stretching screw hole (6).
6. according to claim 4 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described to dissipate
The quantity of hot hole (7) is equal with the quantity of stretching screw hole (6).
7. according to claim 6 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described to dissipate
Hot hole (7) inner wall even distribution has dentalation, as the second radiation tooth (9).
8. according to claim 7 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described
Two radiation tooths (9) height value range is 3~6mm.
9. according to claim 7 a kind of for improving the stator structure of motor radiating ability, which is characterized in that described fixed
The quantity of pilot trench (5) is 9.
10. a kind of for improving the stator structure of motor radiating ability described in one of -9 according to claim 1, feature exists
In the material of the stator core (1) is silicon steel sheet, and the material of the stator coil (2) is enamel insulated round copper wire, the tension spiral shell
The material of bar (3) is No. 45 steel, and the material of the electric motor end cap (4) is aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725323.7U CN208904781U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for improving the stator structure of motor radiating ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725323.7U CN208904781U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for improving the stator structure of motor radiating ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208904781U true CN208904781U (en) | 2019-05-24 |
Family
ID=66576739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821725323.7U Active CN208904781U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for improving the stator structure of motor radiating ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208904781U (en) |
-
2018
- 2018-10-24 CN CN201821725323.7U patent/CN208904781U/en active Active
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