CN105932851A - Three-phase brushless direct-current motor - Google Patents
Three-phase brushless direct-current motor Download PDFInfo
- Publication number
- CN105932851A CN105932851A CN201610541137.7A CN201610541137A CN105932851A CN 105932851 A CN105932851 A CN 105932851A CN 201610541137 A CN201610541137 A CN 201610541137A CN 105932851 A CN105932851 A CN 105932851A
- Authority
- CN
- China
- Prior art keywords
- motor
- rotor
- motor shaft
- phase direct
- current brushless
- 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.)
- Pending
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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
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
-
- 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
-
- 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
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
Abstract
This invention provides a three-phase brushless direct-current motor. The motor comprises a shell, a motor shaft arranged in the shell, a stator and a rotor arranged in the shell, a silicon steel sheet arranged on the inner circumferential surface in a manner of surrounding the motor shaft along the motor shaft, a magnet arranged in the rotor in a manner of surrounding the motor shaft along the motor shaft so as to identify the position of the rotor, and a hall element embedded in the silicon steel sheet along the horizontal axial direction of the motor shaft to detect the magnetic field of the rotor corresponding to the position of a coil. The three-phase brushless direct-current motor is characterized in high locked-rotor torque, low cost, low noise, long service life, high efficiency, low failure rate, and so on.
Description
Technical field
The present invention relates to electric motors, particularly relate to a kind of three-phase direct-current brushless motor.This motor is outstanding
It is applicable to advanced electronic device, robot, aeronautical and space technology, numerical control device, medical treatment chemical industry etc.
High-technology field.
Background technology
Raising and modern production, the development of office automation, household electric along with people's living standard
The equipment such as device, industrial robot increasingly tends to high efficiency, miniaturization and high-intelligentization, as holding
The important component part of units, motor must have that precision is high, speed fast, efficiency high,
The most therefore the application of DC brushless motor increases rapidly.
DC brushless motor volume in the market is big, use and operational efficiency is low, power attenuation is tight
Heavy, expensive.In process of manufacture, the highest to raw material requirement on machining accuracy, cause many
Problem, as reduced the precision in assembling process, the air gap between increase stator and rotor, causes motor
Running noises, affects motor service life etc..
Current existing solution is by electric machine casing, the high manufacturing accuracy of end cap, by higher
Assembly precision reach concentricity and the position degree that bearing is installed, but this scheme is relatively costly, to group
Reload request is high, and the machining accuracy of any one parts is bad all can cause whole motor bad.
Summary of the invention
For above-mentioned problems of the prior art, it is an object of the invention to provide a kind of employing suddenly
Your element detects the three-phase direct-current brushless motor of the high dynamic response of rotor-position.
Three-phase direct-current brushless motor according to embodiments of the present invention, specifically includes that housing；It is arranged on shell
Internal motor shaft；The stator being arranged in housing and rotor, stator includes coil and along motor shaft
Being arranged on the stalloy of the inner peripheral surface of housing in the way of wound motor axle, rotor includes along motor
Axle arranges the Magnet carrying out rotor position sensing in the rotor in the way of wound motor axle；And along motor
The horizontal axis direction of axle is embedded in inside stalloy to detect the position relative to coil, the magnetic field of rotor
The Hall element put.
Further, Hall element be the quantity of Hall element and Hall element be three.
Further, insulating paper and insulation strip it are provided with in housing.
Further, hull outside uses KTL coating.
Further, motor uses deep groove ball bearing to fix.
Further, the shape of motor be the length of side be the square of 65mm.
Further, rotor uses high-performance Ne-Fe-B permanent-magnet material.
Three-phase direct-current brushless motor according to embodiments of the present invention, it uses a kind of special construction, will suddenly
You are embedded in inside rotor stalloy by element, utilize the Magnet on rotor to identify the position of rotor, have
Effect make use of electric machine structure, saves the Magnet installing space of Hall element, shortens motor length,
Ensure electric machine casing, the machining accuracy of front/rear end flanges simultaneously, reach equal-wattage volume less；
Rotor runs more steady in stalloy, effectively reduces the air gap between rotor and stator,
This is to obtaining bigger detent torque during low rate start, reducing motor running noises, improve motor and use
In the life-span, all there is more preferable improvement result.Meanwhile, above-mentioned three-phase direct-current brushless motor uses motor electricity
Sub-commutating structure, utilizes rotor self Magnet, saves motor space, make motor axial length
Shorter, particular client demand can be met, it is also possible to meet the portions of client electricity to little space high pulling torque
Confidential ask.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the generalized section of the three-phase direct-current brushless motor of the present invention；
Fig. 2 is the axonometric chart of the three-phase direct-current brushless motor of the present invention.
Reference:
1. drive end bearing bracket, 2. deep groove ball bearing, 3. motor shaft, 4. insulating paper, 5. Magnet, the most suddenly
Your element, 7. rear end cap, 8. dust cap, 9. coil, 10. stalloy, 11. electric machine casings, 12.
Insulation strip.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or have same or like
The element of function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining
The present invention, and be not considered as limiting the invention.
It is the generalized section of the three-phase direct-current brushless motor of the embodiment of the present invention as shown in Figure 1.According to
The one side of the embodiment of the present invention, motor Hall element 6 is embedded in the inside of stalloy 10, utilizes
Rotor self Magnet 5, it is not necessary to extra magnet ring provides magnetic field, is so effectively utilized motor
Structure, shortens motor length, saves motor space, reduces cost, and then can meet spy
The demand of different client.
Another aspect according to embodiments of the present invention, electric machine casing 11 is outside uses electrophoresis-immersion
-application (KTL) corrosion resistant coating, forms sull, changes its apparent condition and property on its surface
Can, improve corrosion resistance, strengthen wearability and hardness, protect metal surface, expand range of application,
Increase the service life.
It is the axonometric chart of the three-phase direct-current brushless motor of the embodiment of the present invention as shown in Figure 2, according to this
The another further aspect of bright embodiment, motor uses high-quality Hall element 6, and rotor uses high-performance
Nd-Fe-B permanent magnet material, installs three Hall element chips in rotor, monitoring rotor field is relative to fixed
The position of sub-winding (coil), and on the relative position determined, send signal to control power amplification
Element, makes the electric current in stator winding (coil) switch over, improves mechanical characteristics of motor and tune
Joint characteristic, increases locked-rotor torque so that motor is easier to control, and electrical time constant is less than 1.9ms,
Mechanical time constant is less than 3.0ms, it is achieved high dynamic quickly response.
Another further aspect according to embodiments of the present invention, uses unique electronic commutation to replace traditional machinery
Commutation so that motor have relatively reliable performance, lower fault rate, substantially without wear and tear, motor
Service life improves 6 times than brush motor service life.Meanwhile, motor belongs to static motor, unloaded
Electric current is little, efficiency is high, volume is little.Further, motor uses high-quality deep groove ball bearing 2, protects
Demonstrate,prove motor and run more steady, run noise lower.
Another further aspect according to embodiments of the present invention, by improving drive end bearing bracket 1, rear end cap 7 inner bearing
The axiality of seat and electric machine casing 11 is that position degree requires and final assembly precision, improves
Motor front and rear cover assembled after before and after the axiality of bearing 2, decrease the rotary inertia of rotor,
Reduce motor and run noise, improve motor service life.
Another further aspect according to embodiments of the present invention, uses higher copper factor, reduces the electricity of motor
Current density so that no-load current diminishes, locked-rotor torque becomes big, prevents motor overheating to such an extent as to burn electricity
The possibility of machine.
Another further aspect according to embodiments of the present invention, by motor internal increase insulating paper 4, and
Insulating paper 4 and insulation strip 12 is installed additional so that the complete machine class of insulation reaches E level outside coil 9.
Claims (7)
1. a three-phase direct-current brushless motor, it is characterised in that described three-phase direct-current brushless motor includes:
Housing (11)；
The motor shaft (3) being arranged in described housing (11)；
Be arranged on the stator in described housing (11) and rotor, described stator include coil (9) and
Stalloy (10), described stalloy (10) along described motor shaft (3) with around described motor shaft
(3) mode is arranged on the inner peripheral surface of described housing (11), and described rotor includes Magnet (5),
Described Magnet (5) along described motor shaft (3) to arrange in the way of described motor shaft (3)
Identify the position of described rotor in the rotor；And
Hall element (6), the horizontal axis direction along described motor shaft (3) is embedded in described silicon steel
Sheet (10) is internal, to detect the position relative to coil (9), the magnetic field of described rotor.
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described Hall
Element (6) be the quantity of Hall element and described Hall element (6) be three.
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described motor
Inside it is provided with insulating paper (4) and insulation strip (12).
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described housing
(11) outside employing KTL coating.
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described motor
Deep groove ball bearing (2) is used to fix.
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described motor
Shape be the length of side be the square of 65mm.
Three-phase direct-current brushless motor the most according to claim 1, it is characterised in that described rotor
Use high-performance Ne-Fe-B permanent-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541137.7A CN105932851A (en) | 2016-07-11 | 2016-07-11 | Three-phase brushless direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541137.7A CN105932851A (en) | 2016-07-11 | 2016-07-11 | Three-phase brushless direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932851A true CN105932851A (en) | 2016-09-07 |
Family
ID=56827845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610541137.7A Pending CN105932851A (en) | 2016-07-11 | 2016-07-11 | Three-phase brushless direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932851A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012120396A (en) * | 2010-12-03 | 2012-06-21 | Minebea Motor Manufacturing Corp | Brushless motor |
| CN103227544A (en) * | 2013-05-10 | 2013-07-31 | 宁波普尔机电制造有限公司 | Outer motor rotor BLDC (brushless direct current motor) electromotor for roller washing machine |
| CN204258553U (en) * | 2014-11-13 | 2015-04-08 | 江苏浩元动力科技有限公司 | The three-phase double-salient-pole outer-rotor permanent magnet motor of built-in sensors |
| CN104578664A (en) * | 2013-10-18 | 2015-04-29 | 株式会社一宫电机 | Brushless motor |
| CN105634234A (en) * | 2015-12-29 | 2016-06-01 | 赵浩 | Brushless DC tachometer generator |
| CN205544859U (en) * | 2016-01-27 | 2016-08-31 | 台州优松机电科技有限公司 | High -efficient permanent magnet brushless motor |
| CN205811832U (en) * | 2016-07-11 | 2016-12-14 | 德恩科电机（太仓）有限公司 | A kind of three-phase direct-current brushless motor |
-
2016
- 2016-07-11 CN CN201610541137.7A patent/CN105932851A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012120396A (en) * | 2010-12-03 | 2012-06-21 | Minebea Motor Manufacturing Corp | Brushless motor |
| CN103227544A (en) * | 2013-05-10 | 2013-07-31 | 宁波普尔机电制造有限公司 | Outer motor rotor BLDC (brushless direct current motor) electromotor for roller washing machine |
| CN104578664A (en) * | 2013-10-18 | 2015-04-29 | 株式会社一宫电机 | Brushless motor |
| CN204258553U (en) * | 2014-11-13 | 2015-04-08 | 江苏浩元动力科技有限公司 | The three-phase double-salient-pole outer-rotor permanent magnet motor of built-in sensors |
| CN105634234A (en) * | 2015-12-29 | 2016-06-01 | 赵浩 | Brushless DC tachometer generator |
| CN205544859U (en) * | 2016-01-27 | 2016-08-31 | 台州优松机电科技有限公司 | High -efficient permanent magnet brushless motor |
| CN205811832U (en) * | 2016-07-11 | 2016-12-14 | 德恩科电机（太仓）有限公司 | A kind of three-phase direct-current brushless motor |
Non-Patent Citations (1)
| Title |
|---|
| 吴炳辉: "《防爆电气作业》", 30 June 2011, 东南大学出版社 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |
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| RJ01 | Rejection of invention patent application after publication |