CN203632511U - Permanent magnet brushless motor - Google Patents
Permanent magnet brushless motor Download PDFInfo
- Publication number
- CN203632511U CN203632511U CN201320690496.0U CN201320690496U CN203632511U CN 203632511 U CN203632511 U CN 203632511U CN 201320690496 U CN201320690496 U CN 201320690496U CN 203632511 U CN203632511 U CN 203632511U
- Authority
- CN
- China
- Prior art keywords
- rotor core
- permanent magnet
- stator
- ratio
- core
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 241000237509 Patinopecten sp. Species 0.000 description 7
- 235000020637 scallop Nutrition 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a permanent magnet brushless motor comprising a stator and a rotor. The stator comprises a stator iron core (11) and an end cover which is mounted to the end part of the stator iron core (11). The stator iron core (11) comprises an annular part (13) and teeth (15) which extend inward from the annular part (13). The rotor comprises a rotating shaft, a rotor iron core (21) fixed to the rotating shaft and a plurality of permanent magnets (29) embedded to the rotor iron core (21). The rotating shaft is installed to the end cover through a bearing. The ratio of the outer diameter (OD2) of the rotor iron core (21) to the outer diameter (OD1) of the stator iron core (11) is 0.55 to 0.57. The motor has the advantages of small slot torque and high motor efficiency.
Description
[technical field]
The utility model relates to a kind of motor, particularly, relates to a kind of permanent magnetic brushless.
[background technology]
The rotor of permanent magnetic brushless generally includes rotating shaft, be fixedly installed to the rotor core of rotating shaft, be fixed to some permanent magnets of rotor core.Rotor core is formed by some stack of laminations, to reduce magnetic loss.Rotor core comprises that the central through hole axially running through passes and close-fitting for rotating shaft, also comprises some magnet slot that axially run through.These some magnet slot distribute around central through hole, and each magnet slot is provided with a permanent magnet.
The stator of permanent magnetic brushless comprise stator core, coiling to the stator winding of stator core, be fixed to the end cap of stator core etc.The rotating shaft of rotor is installed to the end cap of stator by bearing, thereby can be with respect to stator rotation.The major defect of existing permanent magnetic brushless is that cogging torque is larger, and efficiency is not high.
[utility model content]
An object of the present utility model is to improve the efficiency of brushless electric machine, reduces cogging torque.
For this reason, the brushless electric machine that the utility model provides, comprises stator and rotor.Described stator comprises stator core and is installed to the end cap of stator core end, the tooth that described stator core comprises ring part and inwardly stretches out from described ring part.Described rotor comprises rotating shaft, be fixed to the rotor core of rotating shaft and the setting-in some permanent magnets to described rotor core; Described rotating shaft is installed to described end cap by bearing.The external diameter ratio of the external diameter of described rotor core and described stator core is 0.50～0.62.
As a kind of preferred version, the external diameter ratio of the external diameter of described rotor core and described stator core is 0.55～0.57.
As a kind of preferred version, described permanent magnet is block, along the axially and radially setting-in of rotor core to described rotor core; The vertical rotor iron core of described permanent magnet size is radially considered as the thickness of described permanent magnet, and the ratio of the thickness of described permanent magnet and the outer radius of described rotor core is 0.16～0.22.
As a kind of preferred version, the ratio of the thickness of described permanent magnet and the outer radius of described rotor core is 0.18～0.20.
As a kind of preferred version, described permanent magnet is block, along the axially and radially setting-in of rotor core to described rotor core; Described permanent magnet be considered as the width of described permanent magnet along rotor core size radially, the ratio of the width of described permanent magnet and the outer radius of described rotor core is 0.45～0.55.
As a kind of preferred version, the ratio of the width of described permanent magnet and the outer radius of described rotor core is 047～0.49.
As a kind of preferred version, described tooth comprises the tooth body extending radially inwardly along stator and the crown that is positioned at described tooth body radial inner end and circumferentially stretches out along stator; The size along periphery of rotor of described tooth body is considered as the thickness of described tooth body, and the ratio of the thickness of described tooth body and described stator core inside radius is 0.20～0.30.
As a kind of preferred version, the ratio of the thickness of described tooth body and described stator core inside radius is 0.24～0.26.
As a kind of preferred version, the internal diameter of described rotor core and the ratio of its external diameter are 0.25～0.32.
As a kind of preferred version, the internal diameter of described rotor core and the ratio of its external diameter are 0.27～0.29.
As a kind of preferred version, described rotor core is formed to stacking along motor shaft by some chips, and each chip is monolithic construction, in the circumferential surface of chip, caves inward corresponding to the position of permanent magnet (29) radial outer end.
As a kind of preferred version, the central through hole of described rotor core is shoulder hole, and described rotating shaft is contained in the larger aperture place of described central through hole.
The motor of the utility model preferred embodiment has the following advantages: compact conformation, cogging torque is less, electric efficiency is higher.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
[accompanying drawing explanation]
Fig. 1 is the partial schematic diagram of the brushless electric machine that provides of embodiment of the utility model;
Fig. 2 is the schematic diagram of another angle of brushless electric machine shown in Fig. 1;
Fig. 3 is the floor map of brushless electric machine shown in Fig. 1;
Fig. 4 is the floor map of the stator core of brushless electric machine shown in Fig. 1;
Fig. 5 is the floor map of the rotor core of brushless electric machine shown in Fig. 1.
[embodiment]
Referring to figs. 1 to Fig. 3, the permanent magnetic brushless that embodiment of the utility model provides comprises stator and rotor.Wherein, stator comprise stator core 11, coiling to the stator winding (not shown) of the tooth 15 of stator core, be installed to the end cap (not shown) of stator core 11 ends etc.
Rotor comprises rotating shaft (not shown), be fixed to the rotor core 21 of rotating shaft and the setting-in some permanent magnets 29 to rotor core 21.Rotating shaft is pivotally mounted to end cap by bearing, makes the rotor can be with respect to stator rotation.
With reference to figure 4, some teeth 15 that stator core 11 comprises ring part 13 and inwardly stretches out from ring part 13.The crown 17 that tooth 15 comprises the tooth body 16 extending radially inwardly along stator and is positioned at tooth body 16 radial inner end and circumferentially extends along stator.In the utility model, the maximum outside diameter of ring part 13 is considered as to the external diameter of stator core 11, this external diameter uses OD1 to represent in Fig. 3.The distance of the center O 1 of the radial inner end of tooth 15 and stator core 11 is considered as the inside radius of stator core 11, and this inside radius uses IR1 to represent in Fig. 4.Tooth body 16 be considered as the thickness of tooth body 16 along the circumferential size of stator, this thickness uses T1 to represent in Fig. 4.
With reference to figure 5, rotor comprises rotating shaft (not shown), be installed to permanent magnet 29 in the rotor core of the rotor core of rotating shaft, setting-in etc.Rotor core comprises internal ring portion 23 and outer portion.Internal ring portion 23 has central through hole 23a to be fixedly installed to rotating shaft.In the present embodiment, this central through hole 23a is shoulder hole, and hole wall has a step 24.Rotating shaft is installed to the smaller aperture due section in central through hole, the larger aperture section of central through hole is used for accommodating from end cap or the extended bearing of mount pad, rotating shaft is through bearing, and the external diameter of bearing is less than the internal diameter of larger aperture section of central through hole to avoid bearing to interfere rotor core.Because bearing is contained in central through hole, therefore, this motor has very compact structure, has reduced the axial dimension of motor.In the situation that central through hole is shoulder hole, the internal diameter using the minimum diameter of central through hole as rotor core.
Outer portion comprises some scallop 25 of lining up ring-type, and the inner of each scallop 25 has rib 27 and is connected with internal ring portion 23, and outer end has the connecting portion 26 stretching out along periphery of rotor for being connected with adjacent scallop 25.In the present embodiment, described rotor core is formed to stacking along motor shaft by some chips, and each chip is monolithic construction, and above-mentioned internal ring portion 23, scallop 25, rib 27, connecting portion 26 are one-body molded, for example, form by the mode integrated punching of punching press.In the circumferential surface of chip, connect the connecting portion of adjacent scallop, cave inward with permanent magnet (29) the radial outer end position that leans.Between two adjacent scallop 25, form permanent magnet host cavity; Permanent magnet 29 is installed in corresponding host cavity, the radial outer end of permanent magnet 29 near or support corresponding connecting portion 26.In the present embodiment, the size of connecting portion 26 is along dwindling gradually away from the direction of scallop 25, to reduce magnetic loss.
The maximum outside diameter of rotor core 21 is considered as the external diameter of rotor core 21, and this external diameter uses OD2 to represent in Fig. 5; The maximum outer radius of rotor core 21 is considered as the outer radius of rotor core 21, and this external diameter uses OR2 to represent in Fig. 5.
In the present embodiment, the external diameter OD1 ratio of the external diameter OD2 of rotor core 21 and stator core 11 is 0.50～0.62.Preferably, the external diameter OD1 ratio of the external diameter OD2 of rotor core 21 and stator core 11 is 0.55～0.57.
In the present embodiment, permanent magnet 29 is block.Permanent magnet 29 setting-ins are in rotor core 21, and axially and radially extending along rotor.In the utility model, the axial dimension of permanent magnet 29 is considered as to the height of permanent magnet 29; The radial dimension of permanent magnet 29 is considered as to the width of permanent magnet 29, this width uses W2 to represent in Fig. 4; The thickness that the size of another dimension of permanent magnet 29 (, perpendicular to the size of rotor radial) is considered as to permanent magnet 29, this thickness uses T2 to represent in Fig. 5.The thickness T 2 of permanent magnet 29 is 0.16～0.22 with the ratio of the outer radius OR2 of rotor core 21.Preferably, the thickness T 2 of permanent magnet 29 is 0.18～0.20 with the ratio of the outer radius OR2 of rotor core 21.
Further, the width W 2 of permanent magnet 29 is 0.45～0.55 with the ratio of the outer radius OR2 of rotor core 21.More preferably, the width W 2 of permanent magnet 29 is 0.47～0.49 with the ratio of the outer radius OR2 of rotor core 21.
The ratio of the width T1 of tooth body 16 and stator core 11 inside radius IR1 is 0.20～0.30.Preferably, the thickness T 1 of tooth body 15 is 0.24～0.26 with the ratio of stator core 11 inside radius IR1.
Further, the inner diameter, ID 2 of rotor core 21 is 0.25～0.32 with the ratio of its external diameter OD2.More preferably, the inner diameter, ID 2 of rotor core 21 is 0.27～0.29 with the ratio of its external diameter OD2.
In this enforcement, described rotor comprises 10 permanent magnets, and described stator comprises 12 teeth, forms winding slot between adjacent teeth, thereby forms 10 utmost point 12 groove motors.
For the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (13)
1. a permanent magnetic brushless, comprising:
Stator, described stator comprises stator core (11) and is installed to the end cap of stator core (11) end, the tooth (15) that described stator core (11) comprises ring part (13) and inwardly stretches out from described ring part (13); And
Rotor, described rotor comprises rotating shaft, be fixed to the rotor core of rotating shaft (21) and setting-in to the some permanent magnets (29) in described rotor core (21); Described rotating shaft is installed to described end cap by bearing;
It is characterized in that, the external diameter (OD2) of described rotor core (21) is 0.50～0.62 with external diameter (OD1) ratio of described stator core (11).
2. permanent magnetic brushless as claimed in claim 1, is characterized in that, the external diameter (OD2) of described rotor core (21) is 0.55～0.57 with external diameter (OD1) ratio of described stator core (11).
3. permanent magnetic brushless as claimed in claim 1, is characterized in that, described permanent magnet (29) is block, along the axially and radially setting-in of rotor core (21) to described rotor core; The vertical rotor iron core (21) of described permanent magnet (29) size is radially considered as the thickness (T2) of described permanent magnet (29), and the thickness (T2) of described permanent magnet (29) is 0.16～0.22 with the ratio of the outer radius (OR2) of described rotor core (21).
4. permanent magnetic brushless as claimed in claim 3, is characterized in that, the thickness (T2) of described permanent magnet (29) is 0.18～0.20 with the ratio of the outer radius (OR2) of described rotor core (21).
5. permanent magnetic brushless as claimed in claim 1, is characterized in that, described permanent magnet (29) is block, along the axially and radially setting-in of rotor core (21) to described rotor core; Described permanent magnet (29) be considered as the width (W2) of described permanent magnet (29) along rotor core (21) size radially, the width (W2) of described permanent magnet (29) is 0.45～0.55 with the ratio of the outer radius (OR2) of described rotor core (21).
6. permanent magnetic brushless as claimed in claim 5, is characterized in that, the width (W2) of described permanent magnet (29) is 047～0.49 with the ratio of the outer radius (OR2) of described rotor core (21).
7. permanent magnetic brushless as claimed in claim 1, is characterized in that:
Described tooth (15) comprises the tooth body (16) extending radially inwardly along stator and the crown (17) that is positioned at described tooth body (16) radial inner end and circumferentially stretches out along stator;
The size along periphery of rotor of described tooth body (15) is considered as the thickness (T1) of described tooth body (15), and the thickness (T1) of described tooth body (15) is 0.20～0.30 with the ratio of described stator core (11) inside radius (IR1).
8. permanent magnetic brushless as claimed in claim 7, is characterized in that, the thickness (T1) of described tooth body (15) is 0.24～0.26 with the ratio of described stator core (11) inside radius (IR1).
9. permanent magnetic brushless as claimed in claim 1, is characterized in that, the internal diameter (ID2) of described rotor core (21) is 0.25～0.32 with the ratio of its external diameter (OD2).
10. permanent magnetic brushless as claimed in claim 1, is characterized in that, the internal diameter (ID2) of described rotor core (21) is 0.27～0.29 with the ratio of its external diameter (OD2).
11. permanent magnetic brushless as claimed in claim 1, it is characterized in that, described rotor core is formed to stacking along motor shaft by some chips, and each chip is monolithic construction, in the circumferential surface of chip, cave inward corresponding to the position of permanent magnet (29) radial outer end.
12. permanent magnetic brushless as described in any one in claim 1 to 11, it is characterized in that, stepped through hole is established at the center of described rotor core, and described rotating shaft is contained in the smaller aperture due section of described through hole, described bearing is contained in the larger aperture section of described through hole, and described rotating shaft is through bearing.
13. permanent magnetic brushless as described in any one in claim 1 to 11, is characterized in that, described rotor comprises 10 permanent magnets, and described stator comprises 12 teeth and 12 winding slots that lay respectively between adjacent teeth, thereby form 10 utmost point 12 groove motors.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690496.0U CN203632511U (en) | 2013-11-04 | 2013-11-04 | Permanent magnet brushless motor |
| DE201420105144 DE202014105144U1 (en) | 2013-11-04 | 2014-10-28 | Brushless permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690496.0U CN203632511U (en) | 2013-11-04 | 2013-11-04 | Permanent magnet brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632511U true CN203632511U (en) | 2014-06-04 |
Family
ID=50818947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690496.0U Expired - Lifetime CN203632511U (en) | 2013-11-04 | 2013-11-04 | Permanent magnet brushless motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203632511U (en) |
| DE (1) | DE202014105144U1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887988A (en) * | 2016-09-30 | 2018-04-06 | 罗伯特·博世有限公司 | For driving the electro-motor of ABS system |
| CN109004781A (en) * | 2018-07-09 | 2018-12-14 | 无锡赛盈动力科技有限公司 | A kind of electronic automobile-used permanent-magnet synchronous wheel hub electric motor and its electric vehicle of application |
| CN110098678A (en) * | 2019-05-21 | 2019-08-06 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of brake system permanent magnetic brushless rotor structure |
| JP2022538752A (en) * | 2020-05-26 | 2022-09-06 | 安徽美芝精密制造有限公司 | motors, compressors, and refrigerators |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3041186A1 (en) * | 2015-09-11 | 2017-03-17 | Valeo Equip Electr Moteur | ROTATING ELECTRIC MACHINE STATOR WITH OPTIMIZED HEAD THICKNESS |
-
2013
- 2013-11-04 CN CN201320690496.0U patent/CN203632511U/en not_active Expired - Lifetime
-
2014
- 2014-10-28 DE DE201420105144 patent/DE202014105144U1/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887988A (en) * | 2016-09-30 | 2018-04-06 | 罗伯特·博世有限公司 | For driving the electro-motor of ABS system |
| CN109004781A (en) * | 2018-07-09 | 2018-12-14 | 无锡赛盈动力科技有限公司 | A kind of electronic automobile-used permanent-magnet synchronous wheel hub electric motor and its electric vehicle of application |
| CN110098678A (en) * | 2019-05-21 | 2019-08-06 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of brake system permanent magnetic brushless rotor structure |
| CN110098678B (en) * | 2019-05-21 | 2024-04-19 | 尼得科凯宇汽车电器(江苏)有限公司 | Permanent magnet brushless motor rotor structure for braking system |
| JP2022538752A (en) * | 2020-05-26 | 2022-09-06 | 安徽美芝精密制造有限公司 | motors, compressors, and refrigerators |
| JP7423661B2 (en) | 2020-05-26 | 2024-01-29 | 安徽美芝精密制造有限公司 | Motors, compressors, and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202014105144U1 (en) | 2015-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |