CN108183580B - Permanent magnet synchronous motor with built-in cylindrical gear differential mechanism - Google Patents
Permanent magnet synchronous motor with built-in cylindrical gear differential mechanism Download PDFInfo
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- CN108183580B CN108183580B CN201810126907.0A CN201810126907A CN108183580B CN 108183580 B CN108183580 B CN 108183580B CN 201810126907 A CN201810126907 A CN 201810126907A CN 108183580 B CN108183580 B CN 108183580B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The invention discloses a permanent magnet synchronous motor with a built-in cylindrical gear differential mechanism, which comprises a motor shell and the cylindrical gear differential mechanism, wherein a motor stator is arranged in the motor shell, the cylindrical gear differential mechanism is arranged on the inner side of the motor stator, the cylindrical gear differential mechanism comprises a first motor rotor, a second motor rotor, a planet pair, a first output shaft and a second output shaft, the first motor rotor and the second motor rotor are linearly arranged in the motor stator, one end of the first motor rotor is connected with one end of the second motor rotor, and the first output shaft and the second output shaft are linearly arranged in the first motor rotor and the second motor rotor; the invention has the advantages that the cylindrical gear differential mechanism is arranged in the rotor of the permanent magnet synchronous motor, the volume of the transmission link of the electric automobile is reduced, the power density is improved, meanwhile, the differential mechanism is arranged at the high-speed end of the speed reducer, the stress is small, the economic benefit and the social benefit are good, and the popularization and the use are suitable.
Description
The technical field is as follows:
the invention relates to the field of motors, in particular to a permanent magnet synchronous motor with a built-in cylindrical gear differential mechanism.
Background art:
the permanent magnet synchronous motor is a synchronous motor which generates a synchronous rotating magnetic field by permanent magnet excitation, the permanent magnet is used as a rotor to generate a rotating magnetic field, a three-phase stator winding is reacted through an armature under the action of the rotating magnetic field to induce three-phase symmetrical current, at the moment, the kinetic energy of the rotor is converted into electric energy, and the permanent magnet synchronous motor is used as a generator; in addition, when three-phase symmetrical current is introduced to the stator side, the three-phase stator current generates a rotating magnetic field in the space, the rotor rotates under the action of electromagnetic force to move, at the moment, electric energy is converted into kinetic energy, and the permanent magnet synchronous motor serves as a motor.
In the prior art, the traditional electric automobile mostly adopts a scheme of a motor-reducer-bevel gear differential, the motor and the differential are not on the same axis, the occupied size is large, the differential is arranged at the low-speed end of the reducer, the stress is large, and the large gear is required to provide enough strength.
The invention content is as follows:
the invention aims to solve the problems that the motor and the differential are not on the same axis, the occupied size is large, and the differential is arranged at the low-speed end of the speed reducer and is stressed greatly.
In order to solve the above problems, the present invention provides a technical solution:
a permanent magnet synchronous motor with a built-in cylindrical gear differential mechanism comprises a motor shell and the cylindrical gear differential mechanism, wherein a motor stator is arranged in the motor shell, the cylindrical gear differential mechanism is arranged on the inner side of the motor stator, the cylindrical gear differential mechanism comprises a first motor rotor, a second motor rotor, planet pairs, a first output shaft and a second output shaft, one end of the first motor rotor is fixedly connected with one end of the second motor rotor, the first output shaft and the second output shaft are linearly arranged in the first motor rotor and the second motor rotor, a first driven wheel is arranged at one end, positioned on the second output shaft, of the first output shaft, a second driven wheel is arranged at one end, positioned on the first output shaft, of the second output shaft, the planet pairs are arranged in a plurality, and the planet pairs are encircled to form a circle and are arranged on the inner sides of the first motor rotor and the second motor rotor, the planet pair comprises a first differential planet wheel and a second differential planet wheel, the first differential planet wheel is meshed with the second differential planet wheel, the first differential planet wheel and the second differential planet wheel are meshed with a first driven wheel and a second driven wheel respectively, the first motor rotor and the second motor rotor are arranged in a motor stator in a straight line mode, and the first differential planet wheel and the second differential planet wheel are cylindrical gears.
As a preferred technical solution of the present invention, the motor housing includes a cylindrical housing and end caps, the inner wall of the cylindrical housing is provided with a water jacket, the water jacket is located between the cylindrical housing and the motor stator, the cylindrical housing and the water jacket are directly fixed in an interference fit manner, the end caps are provided in two numbers, the two end caps are provided at two ends of the cylindrical housing, the end caps are provided with first screws, the end caps are connected with the cylindrical housing through the first screws, the other ends of the first output shaft and the second output shaft are respectively arranged at outer sides of the two end caps in a penetrating manner, and the end caps are provided with bearings at positions of the first output shaft and the second output shaft.
As a preferred technical solution of the present invention, permanent magnets are disposed on outer sides of the first motor rotor and the second motor rotor, and the permanent magnets are fixed on outer sides of the first motor rotor and the second motor rotor in an adhesion manner.
As a preferred technical solution of the present invention, the planet pair is provided with first shaft sleeves at two ends of the first motor rotor and the second motor rotor.
As a preferred technical solution of the present invention, the second motor rotor is provided with a second screw, and the second motor rotor is connected to the first motor rotor through the second screw.
As a preferable technical solution of the present invention, a second shaft sleeve is provided on the first output shaft and the second output shaft outside one end of the first driven wheel and the second driven wheel.
The invention has the beneficial effects that:
the invention has reasonable structural design, reduces the volume of the transmission link of the electric automobile and improves the power density by the structural design of arranging the cylindrical gear differential in the rotor of the permanent magnet synchronous motor, and meanwhile, the differential is arranged at the high-speed end of the speed reducer, has small stress, has good economic benefit and social benefit and is suitable for popularization and use.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a front view of the spur gear differential of the present invention;
FIG. 3 is a cross-sectional view of a spur gear differential of the present invention.
In the figure: 1-motor housing, 2-spur gear differential, 3-motor stator, 4-first motor rotor, 5-second motor rotor, 6-planetary pair, 7-first output shaft, 8-second output shaft, 9-first driven wheel, 10-second driven wheel, 11-cylindrical housing, 12-end cap, 13-water jacket, 14-first screw, 15-bearing, 16-permanent magnet, 17-first differential planet wheel, 18-second differential planet wheel, 19-first shaft sleeve, 20-second screw, 21-second shaft sleeve.
The specific implementation mode is as follows:
as shown in fig. 1 to 3, the following technical solutions are adopted in the present embodiment: a permanent magnet synchronous motor with a built-in cylindrical gear differential mechanism comprises a motor shell 1 and a cylindrical gear differential mechanism 2, wherein a motor stator 3 is arranged in the motor shell 1, the cylindrical gear differential mechanism 2 is arranged on the inner side of the motor stator 3, the cylindrical gear differential mechanism 2 comprises a first motor rotor 4, a second motor rotor 5, planet pairs 6, a first output shaft 7 and a second output shaft 8, one end of the first motor rotor 4 is fixedly connected with one end of the second motor rotor 5, the first output shaft 7 and the second output shaft 8 are linearly arranged in the first motor rotor 4 and the second motor rotor 5, a first driven wheel 9 is arranged at one end of the first output shaft 7 on the first output shaft 7, a second driven wheel 10 is arranged at one end of the second output shaft 8 on the first output shaft 7, the planet pairs 6 are arranged in a plurality, and the planet pairs 6 are arranged on the inner sides of the first motor rotor 4 and the second motor rotor 5 in a circle, the planet pair 6 comprises a first differential planet wheel 17 and a second differential planet wheel 18, the first differential planet wheel 17 is meshed with the second differential planet wheel 18, the first differential planet wheel 17 and the second differential planet wheel 18 are meshed with a first driven wheel 9 and a second driven wheel 10 respectively, the first motor rotor 4 and the second motor rotor 5 are linearly arranged in the motor stator 3, and the first differential planet wheel 17 and the second differential planet wheel 18 are cylindrical gears.
Further, the motor housing 1 includes a cylindrical housing 11 and an end cover 12, the inner wall of the cylindrical housing 11 is provided with a water jacket 13, the water jacket 13 is located between the cylindrical housing 11 and the motor stator 3, the cylindrical housing 11 and the water jacket 13 are directly fixed in an interference fit manner, the end covers 12 are provided in two numbers, the two end covers 12 are provided at two ends of the cylindrical housing 11, the end cover 12 is provided with a first screw 14, the end cover 12 is connected with the cylindrical housing 11 through the first screw 14, the other ends of the first output shaft 7 and the second output shaft 8 are respectively arranged outside the two end covers 12 in a penetrating manner, and a bearing 15 is provided at positions on the end cover 12 located at the first output shaft 7 and the second output shaft 8.
Further, permanent magnets 16 are arranged on the outer sides of the first motor rotor 4 and the second motor rotor 5, and the permanent magnets 16 are fixed on the outer sides of the first motor rotor 14 and the second motor rotor 15 in an adhesion mode.
Further, the planetary pair 6 is provided with a first shaft sleeve 19 at two ends of the first motor rotor 4 and the second motor rotor 5.
Further, a second screw 20 is arranged on the second motor rotor 5, and the second motor rotor 5 is connected with the first motor rotor 4 through the second screw 20.
Further, a second shaft sleeve 21 is arranged on the first output shaft 7 and the second output shaft 8 and outside one end of the first driven wheel 9 and the second driven wheel 10.
Specifically, when the device is used, the device and the speed reducer are installed in an electric automobile, the first output shaft 7 or the second output shaft 8 is connected with the high-speed end of the speed reducer, and the device can be used normally after being electrified, in the using process, the first motor rotor 4 and the second motor rotor 5 keep a rotation state after the motors are electrified, the first differential planet wheel 17 and the second differential planet wheel 18 are driven to revolve, the first driven wheel 9 and the second driven wheel 10 are driven to do circular motion to become power sources, and when the device is turned, the first differential planet wheel 17 and the second differential planet wheel 18 rotate while revolving, so that the output rotating speeds of the first output shaft 7 and the second output shaft 8 connected with the first driven wheel 9 and the second driven wheel 10 are different.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a built-in roller gear differential's permanent-magnet synchronous motor, includes motor housing (1) and roller gear differential (2), its characterized in that: the motor comprises a motor shell (1), a motor stator (3) is arranged in the motor shell (1), a cylindrical gear differential (2) is arranged on the inner side of the motor stator (3), the cylindrical gear differential (2) comprises a first motor rotor (4), a second motor rotor (5), a planet pair (6), a first output shaft (7) and a second output shaft (8), one end of the first motor rotor (4) is fixedly connected with one end of the second motor rotor (5), the first output shaft (7) and the second output shaft (8) are linearly arranged in the first motor rotor (4) and the second motor rotor (5), a first driven wheel (9) is arranged at one end, located on the second output shaft (8), of the first output shaft (7) on the first output shaft (7), a second driven wheel (10) is arranged at one end, located on the first output shaft (7), of the planet pair (6) is multiple, and a plurality of planet pairs (6) are enclosed into a circle and are arranged at the inner sides of the first motor rotor (4) and the second motor rotor (5), each planet pair (6) comprises a first differential planet wheel (17) and a second differential planet wheel (18), the first differential planet wheel (17) is meshed with the second differential planet wheel (18), the first differential planet wheel (17) and the second differential planet wheel (18) are respectively meshed with a first driven wheel (9) and a second driven wheel (10), the first motor rotor (4) and the second motor rotor (5) are linearly arranged in the motor stator (3), and the first differential planet wheel (17) and the second differential planet wheel (18) are cylindrical gears.
2. The permanent magnet synchronous motor with built-in cylindrical gear differential mechanism according to claim 1, characterized in that: the motor shell (1) comprises a cylindrical shell (11) and an end cover (12), a water jacket (13) is arranged on the inner wall of the cylindrical shell (11), and the water jacket (13) is positioned between the cylindrical shell (11) and the motor stator (3), the cylindrical shell (11) and the water jacket (13) are directly fixed in an interference fit mode, the number of the end covers (12) is two, two end covers (12) are arranged at two ends of the cylindrical shell (11), a first screw (14) is arranged on each end cover (12), and the end cap (12) is connected with the cylindrical shell (11) through a first screw (14), the other ends of the first output shaft (7) and the second output shaft (8) are respectively arranged on the outer sides of the two end covers (12) in a penetrating way, and bearings (15) are arranged on the end cover (12) and positioned at the first output shaft (7) and the second output shaft (8).
3. The permanent magnet synchronous motor with built-in cylindrical gear differential mechanism according to claim 1, characterized in that: the outer sides of the first motor rotor (4) and the second motor rotor (5) are provided with permanent magnets (16), and the permanent magnets (16) are fixed on the outer sides of the first motor rotor (14) and the second motor rotor (15) in an adhesion mode.
4. The permanent magnet synchronous motor with built-in cylindrical gear differential mechanism according to claim 1, characterized in that: the planet pair (6) is positioned at two ends of the first motor rotor (4) and the second motor rotor (5) and is provided with a first shaft sleeve (19).
5. The permanent magnet synchronous motor with built-in cylindrical gear differential mechanism according to claim 1, characterized in that: and a second screw (20) is arranged on the second motor rotor (5), and the second motor rotor (5) is connected with the first motor rotor (4) through the second screw (20).
6. The permanent magnet synchronous motor with built-in cylindrical gear differential mechanism according to claim 1, characterized in that: and a second shaft sleeve (21) is arranged on the first output shaft (7) and the second output shaft (8) and positioned outside one end of the first driven wheel (9) and one end of the second driven wheel (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126907.0A CN108183580B (en) | 2018-02-08 | 2018-02-08 | Permanent magnet synchronous motor with built-in cylindrical gear differential mechanism |
| PCT/CN2019/074731 WO2019154402A1 (en) | 2018-02-08 | 2019-02-07 | Transverse coaxial differential-reducer integrated electric bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126907.0A CN108183580B (en) | 2018-02-08 | 2018-02-08 | Permanent magnet synchronous motor with built-in cylindrical gear differential mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108183580A CN108183580A (en) | 2018-06-19 |
| CN108183580B true CN108183580B (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810126907.0A Active CN108183580B (en) | 2018-02-08 | 2018-02-08 | Permanent magnet synchronous motor with built-in cylindrical gear differential mechanism |
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| Country | Link |
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| CN (1) | CN108183580B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154402A1 (en) * | 2018-02-08 | 2019-08-15 | 西安六环传动新能源科技有限公司 | Transverse coaxial differential-reducer integrated electric bridge |
| CN111193353B (en) * | 2020-04-10 | 2020-09-04 | 怡高微型马达(龙南)有限公司 | Double-shaft motor with built-in regulating mechanism |
| CN112928859A (en) * | 2021-01-21 | 2021-06-08 | 清研众智测试技术（天津）有限公司 | Differential function rotor and driving motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637048A (en) * | 1994-04-27 | 1997-06-10 | Aisin Seiki Kabushiki Kaisha | Power train device |
| CN2770210Y (en) * | 2005-03-11 | 2006-04-05 | 王瑷国 | Motor differential speed rotor |
| CN105822746A (en) * | 2016-05-14 | 2016-08-03 | 袁廷华 | Double-planet-gear differential speed reducer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267145A (en) * | 2008-04-30 | 2008-09-17 | 上海中上汽车科技有限公司 | Speed differentiator electrode |
| CN101707412B (en) * | 2009-11-13 | 2012-05-09 | 北京科技大学 | Driving motor with function of differential speed output |
| CN103887917A (en) * | 2012-12-19 | 2014-06-25 | 耀马车业(中国)有限公司 | Brushless motor provided with built-in differential mechanism |
| CN105186770A (en) * | 2015-08-01 | 2015-12-23 | 谷伟 | Differential dual-output motor |
-
2018
- 2018-02-08 CN CN201810126907.0A patent/CN108183580B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637048A (en) * | 1994-04-27 | 1997-06-10 | Aisin Seiki Kabushiki Kaisha | Power train device |
| CN2770210Y (en) * | 2005-03-11 | 2006-04-05 | 王瑷国 | Motor differential speed rotor |
| CN105822746A (en) * | 2016-05-14 | 2016-08-03 | 袁廷华 | Double-planet-gear differential speed reducer |
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| Publication number | Publication date |
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| CN108183580A (en) | 2018-06-19 |
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Effective date of registration: 20230215 Address after: 721006 75 Qing Jiang Road, Weibin District, Shaanxi, Baoji Patentee after: Shaanxi Liuhuan Intelligent Equipment Technology Co.,Ltd. Address before: 712000 room 703, 7 / F, building 14, West Yungu, Fengxi new town, Xixian New District, Xi'an City, Shaanxi Province Patentee before: XI'AN SIX RING DRIVE NEW ENERGY TECHNOLOGY Co.,Ltd. |
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