CN209389800U - A kind of DC brushless electric motor - Google Patents
A kind of DC brushless electric motor Download PDFInfo
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- CN209389800U CN209389800U CN201920017058.5U CN201920017058U CN209389800U CN 209389800 U CN209389800 U CN 209389800U CN 201920017058 U CN201920017058 U CN 201920017058U CN 209389800 U CN209389800 U CN 209389800U
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Abstract
The utility model provides a kind of DC brushless electric motor, including stator, rotor, front shaft sleeve and rear axle housing, the rotor is fixed in the stator inner hole by the card slot of the front shaft sleeve and rear axle housing, the rotor includes rotor core, shaft and magnetic shoe, the rotor core is connect with shaft, the outer surface of the rotor core is arranged in the magnetic shoe, the rotor core includes rotor pseudodont and rotor slot, the stator includes stator slot and tooth, stator described in the utility model uses tooth slot structure, the circuit of magnetic field conducting is provided by tooth type structures, reduce magnetic resistance, the stator is stamped to form by silicon steel sheet, reduce eddy current effect and magnetic hystersis loss, it has abandoned conventional external and the method for brake apparatus is provided, space width is increased on the basis of existing DC brushless motor, improve pole slot ratio, it is imitated using tooth socket It should realize that self is braked, and is extended the service life of motor, is reduced later maintenance cost, improves the service efficiency of equipment.
Description
Technical field
The utility model belongs to solar light-heat power-generation technical field more particularly to a kind of DC brushless motor.
Background technique
With the adjustment of energy resource structure, traditional energy has manifested that supply is weak, use cost is high, the disadvantages such as seriously polluted
End, instead " new energy ", " green energy resource " concept deepen continuously the popular feeling.It is well known that solar energy is not only cleaning nothing
The green energy resource of pollution, and be renewable energy.Solar light-heat power-generation (CSP:Concentrating Solar Power)
It is that one kind is effective in the way of a kind of energy conversion of solar energy, has started one new research and development in the world in recent years
And construction upsurge.
CSP system utilizes heliostat reflected sunlight, converges in energy acceptance device and hands over wherein medium into heat
It changes, recycles the energy of Absorption of Medium to pass through heating vapor and generate electricity, this generation mode cleanliness without any pollution, and also energy can
Storage realizes " continuous, stable, controllable " and " grid-connected close friend " and other effects of electric power output.Therefore, has longer heat storage capacity
Photo-thermal power generation can effectively improve peak-load regulating ability, and then have important side for the digestion capability for improving whole new energy
It helps.
An important link is exactly the control of light field heliostat in CSP system, the energy source of whole system completely by
The sunlight of heliostat reflection provides.Heliostat is used for following reflex sunlight, therefore constantly to adjust the angle of mirror surface, from
And guarantees sunlight and be reflected into specified position.This is resulted in for driving the motor of heliostat to want frequent start-stop, conventional motors
On the electromagnetic brake device that uses since the abrasion of mechanical braking is difficult to be used for a long time under frequent start-stop, since heliostat quantity is more
Up to 10,000 faces, bring maintenance cost huge.Therefore this special circumstances are directed to, the utility model is not influence motor itself normal
A kind of DC brushless electric motor of researching and designing under the premise of operating, by increasing on the basis of normal DC brushless motor
Space width improves pole slot ratio, and then increases the cogging torque of motor, plays the effect for increasing braking moment.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of DC brushless electric motor, it is intended to which motor frequently opens
Realize that static brake, the utility model have abandoned traditional method by external offer brake apparatus, passed through " tooth socket in the case where stopping
Effect " realizes that self is braked, and is extended the service life of motor, is reduced later maintenance cost, improves the use effect of equipment
Rate.
The utility model provides the following technical solutions to achieve the above object:
A kind of DC brushless electric motor includes stator, rotor, front shaft sleeve and rear axle housing, and the rotor passes through the front axle
Set and rear axle housing are fixed in the stator inner hole, and the rotor includes rotor core, shaft and magnetic shoe, the rotor iron
Core is connect with shaft, and the outer surface of the rotor core is arranged in the magnetic shoe；
Further, the rotor core includes rotor pseudodont and rotor slot, and radian is 38 ° between the rotor pseudodont, institute
Magnetic shoe is stated to be arranged in the rotor slot outer surface；
Further, the stator includes stator slot and tooth, and the stator slot is straight trough form, and the space width is 5mm；
Further, the stator groove width is 6mm, and depth 13.5mm, the stator is 8 pole, 12 slot Single-layer Windings knot
Structure；
Further, the rotor is radial rotor structure, and the rotor outer surface is equipped with 8 blocks of arcuate permanent magnetic magnet steel, institute
State the lightening hole for being provided with that diameter is 6mm in rotor rim；
Further, the magnetic shoe is with a thickness of 3mm, quantity 8；
Further, the stator includes stator punching, and for the stator punching with a thickness of 0.5mm, maximum iron loss is 4.7W/
Kg, the rotor include rotor punching, and the stator punching and rotor punching material are silicon steel sheet.
The beneficial effects of the utility model are as follows:
1, stator described in the utility model uses tooth slot structure, provides the circuit of magnetic field conducting by tooth type structures, reduces
Magnetic resistance, the stator are stamped to form by silicon steel sheet, reduce eddy current effect and magnetic hystersis loss, the utility model has abandoned tradition
Outside provides the method for brake apparatus, realizes that self is braked by increasing slot effect, and then extend the service life of motor,
Later maintenance cost is reduced, the service efficiency of equipment is improved；
2, the utility model increases space width on the basis of existing DC brushless motor, improves pole slot ratio,
The cogging torque for increasing motor enhances the effect of braking moment under the premise of not influencing motor normal operation itself, mentions
The high stability of motor work, the magnetic shoe material are neodymium iron boron, reduce rotor material loss, alleviate the weight of motor.
Detailed description of the invention
Fig. 1 is the utility model DC brushless motor general assembly drawing；
Fig. 2 is the utility model DC. brushless electric machine stator punching schematic diagram；
Fig. 3 is the utility model brushless DC motor punching schematic diagram；
Fig. 4 is the utility model DC. brushless electric machine stator sectional view；
Fig. 5 is the utility model brushless DC motor schematic diagram.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is explained in further detail the utility model.It should be appreciated that specific embodiment described herein is used only for explaining
The utility model is not used to limit the utility model.On the contrary, the utility model cover it is any be defined by the claims this
Substitution, modification, equivalent method and the scheme made in the spirit and scope of utility model.Further, in order to make the public to this reality
Have a better understanding with novel, it is detailed to describe some specific detail portions below in the datail description of the utility model
Point.The utility model can also be understood completely in the description of part without these details for a person skilled in the art.
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as to the utility model
Restriction.The embodiments of the present invention are described in detail with reference to the accompanying drawing:
As Figure 1-Figure 5, the utility model provides a kind of DC brushless electric motor, and the motor includes stator 3, turns
Son 1, front shaft sleeve 7 and rear axle housing 8, the rotor are fixed at the stator by the card slot of the front shaft sleeve 7 and rear axle housing 8
In 3 inner holes, the rotor 1 includes rotor core 4, shaft 2 and magnetic shoe 6, and the rotor core 4 is connect with shaft 2, the magnetic shoe
6 are arranged in the outer surface of the rotor core 4.
The shaft 2 is connect with speed reducer, is used for output driving torque.
The rotor core 4 includes rotor pseudodont 9 and rotor slot 10, and 9 radians of the rotor pseudodont are 38 °, the magnetic
Watts 6 are arranged in 10 outer surface of rotor slot.
The stator 3 includes stator slot 11 and tooth 12, and the stator slot 11 is straight trough form, and 11 width of stator slot is
6mm, depth 13.5mm, 12 spacing of tooth are 5mm, and the stator 3 is 8 pole, 12 slot single-layer winding structure of single.
The rotor 1 is radial rotor structure, and 1 outer surface of rotor is equipped with 8 blocks of arcuate permanent magnetic magnet steel, the rotor 1
The lightening hole that diameter is 6mm is provided in magnetic yoke.
The magnetic shoe 6 is with a thickness of 3mm, quantity 8.
The stator 3 by stator punching compacting be welded, with a thickness of 0.5mm, maximum iron loss be 4.7W/kg, described turn
Son 1 is welded by rotor punching compacting, and the stator punching and rotor punching material are silicon steel sheet.
In the case that 3 internal diameter of stator determines, 1 outer diameter of rotor can suitably increase.
DC brushless motor provided by the utility model is the commutation of no carbon brush, by Hall sensor by position signal
Driving circuit is fed back to, the frequency and waveform of stator winding input current are changed, is formed around coil around motor geometric center
The round magnetic field of rotation realizes that the steering of motor and revolving speed change.
As shown in Fig. 2, the permanent magnetic steel on the rotor 1 in rotating excitation field stress to driving rotor rotary output force
Square, in the case where external drive circuit performance is certain, the number of magnetic pole pairs of the runnability of motor and itself, the magnetic conductivity of magnet steel
And thickness has very big relationship.
The stator 3 uses tooth slot structure, and tooth type structures are used to provide the circuit of magnetic field conducting, reduces magnetic resistance, and institute
It states stator slot 11 to be then used to inlay fixed coil winding, can also generate magnetic field around coil and be mutually crosslinked with magnetic field in rotor core 4.
Since the tooth 12 is different from the magnetic flux that stator slot 11 is passed through, magnetic field strength is also different, the permanent-magnet magnetic on the rotor 1
Effect of the steel by alternating magnetic field mutually attracts with the stronger tooth of magnetic field strength, hinders rotor rotation, commonly referred to as " slot effect "
Or " cogging torque ".
The 3 slot number T=12 of stator is designed, motor pole number 2P=8 for integer slot.Silicon steel sheet used in the rotor punching
Identical as stator material, magnet steel material is neodymium iron boron 35SH.The slot effect situation certain in motor outer dimension itself
Under by pole embrace, the factors such as width of rebate and rotor gap influence, and concrete measure can take increasing width of rebate, reduce
The mode in gap changes air-gap field distribution between rotor, and braking moment is made to meet requirement.
The stator 3 generates the rotating excitation field of alternation after external drive circuit energization, and the magnetic shoe 6 is in changing magnetic field
Middle stress drives the shaft 2 to rotate, and does work by the speed reducer output torque of its connection.
As shown in figure 4, the utility model increases cogging torque, stator winding form is Single-layer Windings, and external power supply is
24V DC power supply is three-phase circuit to form rotating excitation field by driver switch circuit conversion.3 iron core of stator
For outer diameter depending on output power size, 3 core length of stator is equally related with output power, particularly as being determining first
Electric load A and magnetic loading B, wherein it is also contemplated that being subject to again after the cost of selected materials, service life and copper loss and iron loss situation
It determines.
As shown in figure 5, the shape of the rotor 1 can pass through rotor in the case where electric load A and magnetic loading B is determined
The ratio λ expression of length La and rotor diameter Dz,In order to increase cogging torque, can the value reduction appropriate of λ, from
And increase the value of outer diameter D z.
It include the specific targets such as output power, nominal torque, braking moment, rated speed according to given technical indicator,
Outer diameter D a, internal diameter Di, the length La of stator core are determined first.Stator core outer diameter D a can be exported according to Da and unit speed
The characteristic curve of power obtains, and then calculates the value of La again.It is true in diameter of stator bore Di to reduce the gap between rotor
In the case where fixed, rotor diameter Dz can suitably increase.
Because of the particular application of the utility model DC brushless motor, it is desirable that frequent start-stop, so to pass through increasing
Cogging torque come realize self braking purpose.Therefore the matching relationship of number of poles P Yu slot number T are considered in design, it is specific to influence
Factor is exactly the selection of pole embrace σ, and number of poles P increase can reduce copper consumption and with iron, it is possible to reduce motor size, but often
Pole leakage magnetic flux just will increase, and pole embrace σ is caused to become smaller, thus cannot meet the requirements, and will design conjunction to reach torque request
The relationship of the pole slot mixing ratio of reason, the number of poles P and slot number T can be indicated with following formula:Wherein A
For integer,For irreducible fraction；It facts have proved that denominator D is bigger, the braking moment of motor is smaller, so the feelings certain in number of poles
Under condition, the variation of slot number just causes the variation of braking moment.It is necessary to the width by adjusting notch and calmly after the determination of pole slot number
Gap between rotor influences cogging torque to adjust air-gap flux.Idle armature magnetic density and the facewidth be inversely proportional with tooth pitch at
Direct ratio, gap of the air-gap flux again between rotor is related, and gap increases, and leakage magnetic flux becomes larger across area, and total magnetic flux subtracts
It is small, it is proved by theoretical calculation and test, increases the facewidth, cogging torque can be increased by reducing the gap between rotor, this is practical
Rotor size described in novel brshless DC motor meets rated power 0.4KW, and nominal torque 2.55Nm meets braking moment
The requirement of (quiet resistive torque) 1.3Nm-1.5 Nm uses 12 slot, 8 pole electric machine structure, groove width 6mm, slot pitch 5mm by repetition test
It meets the actual needs.
A kind of DC brushless electric motor of the utility model applies the heliostat of the Jing Chang in photo-thermal power station to control occasion,
Every face heliostat needs azimuth axis and each 1 motor driven of pitch axis both direction, and the quantity of entire mirror field heliostat is more than 10,000
Face, 2 Wan Yutai of motor, if controlling motor by traditional mode of braking, the maintenance expense of initial cost cost and later period
Be all it is huge, the utility model solves the problems, such as later maintenance, reduces the input cost of photo-thermal power generation project.
In the description of the present application, it should be noted that term center, upper and lower, left and right, vertical, horizontal, inside and outside etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as the limitation to the application.
Claims (8)
1. a kind of DC brushless electric motor, which is characterized in that the motor include stator (3), rotor (1), front shaft sleeve (7) and
Rear axle housing (8), the rotor (1) are fixed in the stator (3) inner hole by the front shaft sleeve (7) and rear axle housing (8),
The rotor (1) includes rotor core (4), shaft (2) and magnetic shoe (6), and the rotor core (4) connect with shaft (2), described
Magnetic shoe (6) is arranged in the outer surface of the rotor core (4).
2. a kind of DC brushless electric motor according to claim 1, which is characterized in that the rotor core (4) includes
Rotor pseudodont (9) and rotor slot (10), radian is 38 ° between the rotor pseudodont (9), and the magnetic shoe (6) is arranged in the rotor
Slot (10) outer surface.
3. a kind of DC brushless electric motor according to claim 1, which is characterized in that the stator (3) includes stator
Slot (11) and tooth (12), the stator slot (11) are straight trough form, and tooth (12) spacing is 5mm.
4. a kind of DC brushless electric motor according to claim 3, which is characterized in that stator slot (11) width is
6mm, depth 13.5mm, the stator (3) are 8 pole, 12 slot single-layer winding structure of single.
5. a kind of DC brushless electric motor according to claim 1, which is characterized in that the rotor (1) is radial turns
Minor structure, rotor (1) outer surface are equipped with 8 blocks of arcuate permanent magnetic magnet steel, and it is 6mm that diameter is provided in rotor (1) magnetic yoke
Lightening hole.
6. a kind of DC brushless electric motor according to claim 1, which is characterized in that the magnetic shoe (6) with a thickness of
3mm, quantity 8.
7. a kind of DC brushless electric motor according to claim 1, which is characterized in that the stator (3) includes stator
Punching, for the stator punching with a thickness of 0.5mm, maximum iron loss is 4.7W/kg.
8. a kind of DC brushless electric motor according to claim 7, which is characterized in that the rotor (1) includes rotor
Punching, the stator punching and rotor punching material are silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920017058.5U CN209389800U (en) | 2019-01-04 | 2019-01-04 | A kind of DC brushless electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920017058.5U CN209389800U (en) | 2019-01-04 | 2019-01-04 | A kind of DC brushless electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209389800U true CN209389800U (en) | 2019-09-13 |
Family
ID=67863665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920017058.5U Active CN209389800U (en) | 2019-01-04 | 2019-01-04 | A kind of DC brushless electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209389800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672283A (en) * | 2019-01-04 | 2019-04-23 | 北京首航艾启威节能技术股份有限公司 | Novel DC brushless motor |
-
2019
- 2019-01-04 CN CN201920017058.5U patent/CN209389800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672283A (en) * | 2019-01-04 | 2019-04-23 | 北京首航艾启威节能技术股份有限公司 | Novel DC brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 208, building 3, No.2 Yushun Road, Daxing District, Beijing 102602 Patentee after: Shouhang high tech energy technology Co., Ltd Address before: 100070, Beijing Fengtai District headquarters base three District 20 Patentee before: SHOUHANG RESOURCES SAVING |
|
| CP03 | Change of name, title or address | ||
| CP02 | Change in the address of a patent holder |
Address after: 730311 no.2888, North Qilianshan Avenue, Lanzhou New District, Lanzhou City, Gansu Province (room 317, zone B, comprehensive service building, comprehensive free trade zone) Patentee after: Shouhang high tech energy technology Co.,Ltd. Address before: Room 208, building 3, No.2 Yushun Road, Daxing District, Beijing Patentee before: Shouhang high tech energy technology Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 735000 room 307, No. 23, West Street, northwest street, Suzhou District, Jiuquan City, Gansu Province Patentee after: Shouhang high tech energy technology Co.,Ltd. Address before: 730311 no.2888, North Qilianshan Avenue, Lanzhou New District, Lanzhou City, Gansu Province (room 317, zone B, comprehensive service building, comprehensive free trade zone) Patentee before: Shouhang high tech energy technology Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |