CN106451988A - Brushless electric machine rotor sheet of automobile brake system - Google Patents
Brushless electric machine rotor sheet of automobile brake system Download PDFInfo
- Publication number
- CN106451988A CN106451988A CN201611168159.XA CN201611168159A CN106451988A CN 106451988 A CN106451988 A CN 106451988A CN 201611168159 A CN201611168159 A CN 201611168159A CN 106451988 A CN106451988 A CN 106451988A
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- China
- Prior art keywords
- rotor
- line
- punching
- brake system
- section
- 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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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000004080 punching Methods 0.000 claims description 54
- 238000004804 winding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 238000009413 insulation Methods 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a brushless electric machine rotor sheet of automobile brake system, wherein a peripheral of a rotor sheet utilizes straight lines and arcs to form a salient pole structure. An U-shaped groove is disposed at the rotor sheet. The U-shaped groove is divided into three sections which have the same length. A flux-insulation bridge and a location step are disposed at a joint of the U-shaped groove. The rotor sheet is provided with a location hole for rotor-skewing. A peripheral of the salient pole of the rotor sheet utilizes a structure of straight line and arc, which reduces a content of a counter emf harmonic wave. Optimal designed shape and size of U-shaped magnetic steel groove and the peripheral of the salient pole can expand the range of field-weakening speed expansion of a motor. The motor can provide a certain torque in high speed running and meanwhile magnify the counter emf. A watt density of the motor is improved, and a quality of the motor is reduced. Three sections of the U-shaped groove have the same length, thus the motor only uses one size of magnetic steel, which decreases the cost of the motor. The flux-insulation bridge of the joint of the U-shaped groove also reduces the content of the counter emf harmonic wave. When the rotor is skewing, the skewing location pole is capable of providing a location without a rotor-skewing location frock. The brushless electric machine rotor sheet of automobile brake system is designed properly and is convenient and practical.
Description
Technical field
The present invention is a kind of automobile brake system rotor punching sheet of brushless motor, belongs to a kind of automobile brake system brushless electric machine
Rotor punching optimisation technique.
Background technology
The requirement more and more higher to brushless electric machine for the automobile brake system is it is desirable to still protect when brushless electric machine lightweight, high rotating speed
Hold that certain torque output, torque pulsation be low, cost is low.Conventional brush-less motor rotor magnetic steel adopts surface-mount type or embedded,
Motor main flux cannot be lifted further, can only meet performance requirement by increasing fuselage length, particularly surface-mount type simultaneously
Magnetic steel structure saliency inconspicuous it is impossible to carry out weak magnetism speed expansion, motor speed raise when it is impossible to output satisfactory turn
Square.Back-emf harmonic content is higher and Slot force to compare ambassador's motor torque ripple ratio larger, if skewed-rotor needs specially
The frock of door, causes motor cost to rise.
Content of the invention
For problem above, the invention provides one kind can improve power of motor density, still keep certain during high rotating speed and turn
Square, low torque ripple, the automobile brake system rotor punching sheet of brushless motor of low cost.
The technical scheme is that：A kind of automobile brake system rotor punching sheet of brushless motor, the periphery of rotor punching is adopted
With salient-pole structure, rotor punching has U-type groove, and the junction of U-type groove is provided with every magnetic bridge and positioning step, rotor punching and setting
There is the location hole for skewed-rotor.
Above-mentioned rotor punching periphery adopts straight line and circular arc to form salient-pole structure, the top that the adjacent U-lag of line correspondences two is formed
Portion, the distance at top to straight line takes the shortest, mechanical strength during guarantee motor maximum speed simultaneously.The circular arc highest of salient pole periphery
The center of the corresponding U-lag of point.
Above-mentioned rotor punching has several U-type groove, and preferably 10, U-type groove is divided into three sections, left section, bottom section and right section,
Three sections of length is identical.The vertical line with Di Duan center and the center of circle of bottom section, left section is 36 ° -39 ° with right section of angle, three sections
The length of either segment is 0.25-0.35 with the distance ratio of circular arc peak to the center of circle.The width of three sections of either segment and length
Ratio is 0.3-0.4.
The junction of above-mentioned rotor punching U-type groove is left section and bottom section, right section and bottom section junction are provided with every magnetic bridge.
The junction of above-mentioned rotor punching U-type groove is left section and bottom section, right section and bottom section junction are provided with locator protrusions.Fixed
The height of position projection is 0.5.
The line of above-mentioned two oblique pole location holes of rotor punching passes through the punching center of circle,
A. when rotor height is less than 25, skewed pole rotor divides 2 sections, and rotor punching is a kind, and line with the angle of punching Axisymmetric Distributed Line is
Skewed-rotor angle/2.
B. rotor height is more than 25 skewed pole rotors when being less than 50 and divides 3 sections, and rotor punching is 2 kinds, the first, line and punching
Piece Axisymmetric Distributed Line overlaps, second, and line is skewed-rotor angle/2 with the angle of punching Axisymmetric Distributed Line.
C. when rotor height is more than 50, skewed pole rotor divides 4 sections, and rotor punching is 2 kinds, the first, line and punching axle pair
The angle of line is called skewed-rotor angle/2, second, and line is skewed-rotor angle/6 with the angle of punching Axisymmetric Distributed Line.
Punching periphery of the present invention salient-pole structure and the U-type groove optimizing can expand saliency, expand the model of motor weak-magnetic speed-regulating
Enclose, motor still can keep certain torque in high rotating speed, the U-type groove simultaneously optimizing can improve winding back emf, improve electricity
Acc power density, reduces the quality of motor, the cylindrical straight line portion of salient pole and reduce winding back emf harmonic content every magnetic bridge,
The length that three sections of U-type groove is identical and location hole reduces motor cost.
Brief description
Fig. 1 is the structural representation of embodiment of the present invention rotor punching；
Fig. 2 is orthodox car brake rotor punching sheet of brushless motor structural representation.
Fig. 3 is weak magnetic angle is embodiment motor and conventional motors torque and rotating speed correlation curve when 0 and 25 degree.
Fig. 4 is embodiment motor and conventional motors back-emf correlation curve.
Fig. 5 is embodiment motor and conventional motors back-emf harmonic content correlation curve.
Fig. 6 is embodiment motor and conventional motors cogging torque correlation curve.
In figure：1-U type groove;2- oblique pole location hole；3- locator protrusions；4- is every magnetic bridge；5-U type groove bottom section；6- U-type groove is left
Section；7- salient pole straight line portion；8- salient pole figure arc portion is divided；Right section of 9- U-type groove；The line of a- oblique pole location hole and punching axial symmetry
The angle of line；D- circular arc peak is to the distance in the center of circle；The adjacent U-lag of d- line correspondences two formed top to straight line away from
From；The angle that left section and right section of A-；The length of tri- sections of either segment of L-；The height of H- locator protrusions；Three sections of either segment of T-U type groove
Thickness;The traditional and original design of original-；Optimize- embodiment scheme.
Specific embodiment
Embodiment 1
The lamination structure of the present invention is as shown in Figure 1.
The periphery of rotor punching adopts salient-pole structure, and rotor punching has U-type groove 1, and the junction of U-type groove 1 is provided with every magnetic
Bridge 4 and positioning step 3, rotor punching and be provided with the location hole 2 for skewed-rotor.
Above-mentioned rotor punching periphery adopts straight line 7 and circular arc 8 to form salient-pole structure, and straight line 7 corresponds to two adjacent U-lags 1
The top being formed, the distance at top to straight line 7 is 0.6, and when distance is more than 0.6, back-emf harmonic content can rise, and works as distance
During less than 0.6, the frame for movement that rotor can be destroyed from power of magnet steel during high rotating speed.Circular arc 8 peak of salient pole periphery corresponds to U-shaped
The center of groove 1, motor weak magnetism speed expansion scope is wider, 25 degree of motor weak magnetic angle, and during 2600rpm, torque is still up to 2.7N/m.
Above-mentioned rotor punching has 10 U-type groove 1, and U-type groove 1 is divided into three sections, left section 6, bottom section 5 and right section 9, three sections
Length phase is all 5.2.The vertical line with bottom section 5 center and the center of circle of bottom section 5, left section 6 and right section 9 of included angle A is 37.83 °, three
Length L of section either segment is 0.3 with the distance ratio of circular arc 8 peak to the center of circle.The thickness T of three sections of either segment and length L
Ratio be 0.35, motor can with lightweight, motor can when length is down to 22,2000rpm back-emf up to 9.5V, torque
Up to 3.05N/m.
The junction of above-mentioned rotor punching U-type groove 1 is left section 6 and bottom section 9, right section 9 and bottom section 5 junction are provided with every magnetic bridge
4, winding back emf harmonic content is down to 0.4%.
The junction of above-mentioned rotor punching U-type groove 1 is left section 6 and bottom section 9, right section 9 and bottom section 5 junction are provided with positioning and dash forward
Play 3.The height of locator protrusions 3 is 0.5.
The line of above-mentioned two oblique pole location holes 2 of rotor punching passes through the punching center of circle, and rotor length is 22 less than 30 point 2
Section, rotor punching is a kind, and skewed-rotor angle is 12 degree, and line is electricity after 6 ° of skewed-rotors with angle a of punching Axisymmetric Distributed Line
Machine cogging torque is close to 0.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of automobile brake system rotor punching sheet of brushless motor it is characterised in that：Punching periphery adopts straight line and circular arc composition
Salient-pole structure, rotor punching has U-shaped magnet steel groove, and the junction of U-type groove is provided with every magnetic bridge and positioning step, rotor punching and setting
There is the location hole for skewed-rotor.
2. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1, it is special
Levy and be：The top that the adjacent U-lag of the line correspondences of salient pole periphery two is formed, the distance at top to straight line take the shortest,
Ensure mechanical strength during motor maximum speed, the center of the corresponding U-lag of circular arc peak of salient pole periphery simultaneously.
3. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1 it is characterised in that：U-type groove is divided
For three sections, left section, bottom section and right section, three sections of length is identical, the vertical line with Di Duan center and the center of circle of bottom section, left section and the right side
The angle of section is 36 ° -39 °, and the length of three sections of either segment is 0.25-0.35 with the distance ratio of circular arc peak to the center of circle, three
The width of section either segment is 0.3-0.4 with the ratio of length.
4. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1 it is characterised in that：U-type groove
Junction is left section and bottom section, right section and bottom section junction are provided with every magnetic bridge.
5. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1 it is characterised in that：U-type groove
Junction is left section and bottom section, right section and bottom section junction are provided with locator protrusions, and the height of locator protrusions is 0.5.
6. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1 it is characterised in that：Two oblique poles
The line of location hole passes through the punching center of circle,
A. rotor height is less than 2 sections of 25 time-division oblique pole, and rotor punching is a kind, and line is rotor with the angle of punching Axisymmetric Distributed Line
Tiltedly polar angle degree/2；
B. rotor height is more than 25 skewed pole rotors when being less than 50 and divides 3 sections, and rotor punching is 2 kinds, the first, line and punching axle
Line of symmetry overlaps, second, and line is skewed-rotor angle/2 with the angle of punching Axisymmetric Distributed Line；
C. when rotor height is more than 50, skewed pole rotor divides 4 sections, and rotor punching is 2 kinds, the first, line and punching Axisymmetric Distributed Line
Angle be skewed-rotor angle/2, second, the angle of line and punching Axisymmetric Distributed Line is skewed-rotor angle/6.
7. a kind of automobile brake system rotor punching sheet of brushless motor according to claim 1 it is characterised in that：Rotor punching
It is preferably 10 U-type groove, stator is preferably 8 groove concentratred winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168159.XA CN106451988A (en) | 2016-12-16 | 2016-12-16 | Brushless electric machine rotor sheet of automobile brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168159.XA CN106451988A (en) | 2016-12-16 | 2016-12-16 | Brushless electric machine rotor sheet of automobile brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106451988A true CN106451988A (en) | 2017-02-22 |
Family
ID=58216636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611168159.XA Pending CN106451988A (en) | 2016-12-16 | 2016-12-16 | Brushless electric machine rotor sheet of automobile brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451988A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196436A (en) * | 2017-07-03 | 2017-09-22 | 广东威灵电机制造有限公司 | Rotor punching, skewed pole rotor and magneto |
| CN107332405A (en) * | 2017-08-16 | 2017-11-07 | 广东威灵电机制造有限公司 | The manufacture method of skewed pole rotor |
| USD960086S1 (en) | 2017-07-25 | 2022-08-09 | Milwaukee Electric Tool Corporation | Battery pack |
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
| USD1035566S1 (en) | 2021-08-26 | 2024-07-16 | Milwaukee Electric Tool Corporation | Battery pack |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080203842A1 (en) * | 2007-02-28 | 2008-08-28 | Matsushita Electric Industrial Co., Ltd. | Motor |
| CN102624118A (en) * | 2012-04-13 | 2012-08-01 | 深圳市福义乐磁性材料有限公司 | Rotor punching structure of permanent magnet synchronous motor |
| CN103872819A (en) * | 2012-12-10 | 2014-06-18 | 艾默生环境优化技术(苏州)有限公司 | Rotor assembly and permanent magnet motor including the same |
| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| CN206542315U (en) * | 2016-12-16 | 2017-10-03 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of automobile brake system rotor punching sheet of brushless motor |
-
2016
- 2016-12-16 CN CN201611168159.XA patent/CN106451988A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080203842A1 (en) * | 2007-02-28 | 2008-08-28 | Matsushita Electric Industrial Co., Ltd. | Motor |
| CN102624118A (en) * | 2012-04-13 | 2012-08-01 | 深圳市福义乐磁性材料有限公司 | Rotor punching structure of permanent magnet synchronous motor |
| CN103872819A (en) * | 2012-12-10 | 2014-06-18 | 艾默生环境优化技术(苏州)有限公司 | Rotor assembly and permanent magnet motor including the same |
| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| CN206542315U (en) * | 2016-12-16 | 2017-10-03 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of automobile brake system rotor punching sheet of brushless motor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196436A (en) * | 2017-07-03 | 2017-09-22 | 广东威灵电机制造有限公司 | Rotor punching, skewed pole rotor and magneto |
| USD960086S1 (en) | 2017-07-25 | 2022-08-09 | Milwaukee Electric Tool Corporation | Battery pack |
| US11462794B2 (en) | 2017-07-25 | 2022-10-04 | Milwaukee Electric Tool Corporation | High power battery-powered system |
| US11476527B2 (en) | 2017-07-25 | 2022-10-18 | Milwaukee Electric Tool Corporation | High power battery-powered system |
| CN107332405A (en) * | 2017-08-16 | 2017-11-07 | 广东威灵电机制造有限公司 | The manufacture method of skewed pole rotor |
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
| USD1035566S1 (en) | 2021-08-26 | 2024-07-16 | Milwaukee Electric Tool Corporation | Battery pack |
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