CN218472876U - Stator and rotor punching sheet structure of permanent magnet synchronous flat copper wire motor and stator and rotor thereof - Google Patents
Stator and rotor punching sheet structure of permanent magnet synchronous flat copper wire motor and stator and rotor thereof Download PDFInfo
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- CN218472876U CN218472876U CN202222938890.3U CN202222938890U CN218472876U CN 218472876 U CN218472876 U CN 218472876U CN 202222938890 U CN202222938890 U CN 202222938890U CN 218472876 U CN218472876 U CN 218472876U
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- 238000004080 punching Methods 0.000 title claims abstract description 60
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 106
- 239000010959 steel Substances 0.000 claims abstract description 106
- 230000005389 magnetism Effects 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 230000004907 flux Effects 0.000 description 10
- 238000004804 winding Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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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Abstract
The utility model discloses a stator and rotor punching sheet structure of a permanent magnet synchronous flat copper wire motor and a stator and a rotor thereof, belonging to the technical field of permanent magnet synchronous motors; the magnetic pole structure comprises a stator punching sheet and a rotor punching sheet, wherein the middle part of the stator punching sheet is of a hollow structure for accommodating the rotor punching sheet, the rotor punching sheet forms a plurality of magnetic poles arranged at intervals along the circumferential direction of the rotor punching sheet, each magnetic pole comprises a first magnetic steel slot group and a second magnetic steel slot group, an auxiliary slot is arranged on the outer circumference of the rotor punching sheet between the first magnetic steel slot group and the second magnetic steel slot group, the first magnetic steel slot group and the second magnetic steel slot group respectively comprise two first magnetic steel slots and two second magnetic steel slots which are arranged in a V shape, and first magnetic steel and second magnetic steel are respectively arranged in the first magnetic steel slot and the second magnetic steel slot; the utility model discloses improve PMSM power factor, back electromotive force's in the work operation sinusoid, efficiency and moment of torsion are undulant, effectively enlarge PMSM's high efficiency operation region, have enlarged the weak magnetism speed extension ability of motor.
Description
Technical Field
The utility model discloses a synchronous flat copper line motor of permanent magnetism decides, rotor towards piece structure and decides, rotor belongs to synchronous motor technical field of permanent magnetism.
Background
With the continuous deterioration of natural environment and the shortage of fossil energy supply, electric vehicles are an effective path for ensuring the mobility of human beings and realizing the sustainable development of the automobile industry while reducing the dependence on fossil fuels and environmental pollution. As a novel clean energy, the electric energy becomes the inevitable trend of future energy development, and the electric vehicle also inevitably replaces the traditional fuel automobile to become the leading vehicle of the new era. The electric vehicle comprises electric passenger vehicles, electric passenger cars, electric logistics vehicles, electric motorcycles, electric bicycles and other vehicles which use a power supply as main driving force. The motor is taken as a power source spring of the electric automobile, and the importance of the motor is self-evident, and most of the electric automobiles adopt permanent magnet synchronous motors at present.
The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved. The permanent magnet synchronous motor is composed of a stator, a rotor, an end cover and the like. The stator is basically the same as a common induction motor, and a lamination structure is adopted to reduce iron loss during the operation of the motor. The rotor can be made into solid or laminated by lamination.
Because the permanent magnet is introduced into the rotor of the permanent magnet synchronous motor, the shape and the placing position of the permanent magnet synchronous motor are various, the magnetic circuit structure is complex, and the excitation characteristic of the motor is greatly changed, so that the analysis and calculation of the permanent magnet synchronous motor are more complex than those of a common motor. Therefore, it is difficult to select a suitable stator structure, rotor structure and permanent magnet arrangement.
In the prior art, because the structural design of the stator and the rotor is not reasonable enough, the following problems often occur: the motor has the advantages of large leakage flux, poor sine of back electromotive force, large vibration noise, small high-efficiency operation area, low power density, insufficient working efficiency and power factor and the like, so an effective permanent magnet synchronous motor structure for the vehicle is required at present, various performances of the permanent magnet synchronous motor for the vehicle are improved, and the market is actively developed for the application of new energy vehicles.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The to-be-solved technical problem of the utility model is to solve current PMSM structure, especially stator structure, rotor structural design in it are reasonable inadequately, and the magnetic leakage flux of motor often appears big, the sine of back electromotive force is poor, vibration noise is big, high efficiency operation area is little, power density is low, work efficiency and power factor are high scheduling problem inadequately.
(II) technical scheme
In order to solve the technical problem, the utility model provides a permanent magnet synchronous flat copper wire motor stator and rotor punching structure, which comprises a stator punching sheet and a rotor punching sheet, wherein the middle part of the stator punching sheet is of a hollow structure for accommodating the rotor punching sheet, the rotor punching sheet forms a plurality of magnetic poles arranged at intervals along the circumferential direction of the rotor punching sheet, each magnetic pole comprises a first magnetic steel slot group and a second magnetic steel slot group, an auxiliary slot is arranged on the outer circumference of the rotor punching sheet between the first magnetic steel slot group and the second magnetic steel slot group, and the auxiliary slot is a triangular slot and is used for correcting the counter electromotive force of the motor, so that the counter electromotive force is closer to sine, and the harmonics of the motors 5,7, 11 and 13 times are optimized; the method has the advantages that the effect 1 is to reduce the skin effect of the motor winding, reduce the alternating current copper consumption of the winding and reduce the high-speed iron consumption, and the effect 2 is to optimize the NVH (motor vibration noise) of the motor and optimize the NVH of the motor for 2P times and 2mP times. First magnet steel groove group and second magnet steel groove group are including two first magnet steel grooves and two second magnet steel grooves that are the setting of V style of calligraphy respectively, and the opening of V style of calligraphy is towards the outside of rotor punching, and first magnet steel groove group and second magnet steel groove group clearance are piled up and are set up and form bilayer structure, and every utmost point two-layer V-arrangement magnet steel is arranged, improve the straight axle inductance of motor, increase motor reluctance torque, increase motor torque, improve driving motor's high efficiency operation region, enlarge motor speed range, be provided with first magnet steel and second magnet steel in first magnet steel groove and the second magnet steel groove respectively, the setting of bilayer magnet steel provides the magnetic pole that more is close the normal rotation.
The width of each of the first magnetic steel groove and the second magnetic steel groove is smaller than the distance between the adjacent magnetic poles, and the setting is favorable for generating reluctance torque of the motor, so that the output torque of the motor is increased.
The magnetic bridge is formed in the middle of the magnetic pole, the first magnetic steel groove group and the second magnetic steel groove group are respectively symmetrical about the magnetic bridge, and the magnetic bridge can improve the rotating speed of the motor and the efficiency of the motor.
A first inner magnetism isolating groove and a first outer magnetism isolating groove are respectively arranged at two ends of the first magnetic steel groove, the first inner magnetism isolating groove protrudes towards the inner diameter of the rotor, so that the width of the air magnetism isolating groove is larger than the width of the middle part of the magnetic steel groove, the outer side of the first outer magnetism isolating groove is sunken, and the length of the magnetic bridge is larger than the thickness of the magnetic steel groove; the design has the effects that the longer magnetic isolation bridge can ensure the strength of the magnetic bridge when the motor runs at a high rotating speed, and simultaneously, the magnetic leakage of the magnetic steel is reduced as much as possible, so that the using amount of the magnetic steel is saved; and a second inner magnetism isolating groove and a second outer magnetism isolating groove are respectively arranged at two ends of the second magnetic steel groove. The air magnetism isolating groove is used for reducing magnetic flux leakage of the magnetic steel.
The magnetic steel positioning structure is characterized in that a first magnetic steel positioning structure and a second magnetic steel positioning structure are respectively arranged on the first magnetic steel groove and the second magnetic steel groove, the magnetic steel positioning structures are arc structures, and the problem of stress concentration when the motor runs at a high speed can be solved by the arc structures.
The stator punching sheet is provided with a plurality of wire grooves which are spaced along the circumferential direction and are extended along the axial direction on the surface of the stator punching sheet, and flat copper wires are inserted in the wire grooves in a penetrating manner. The stator punching sheet adopts 36-slot structural design, the size of a winding slot is increased, more copper wires can be wound, the efficiency of the motor is improved, and the size of the motor is reduced to a certain extent under the condition of equal output power. Compare in scattered line winding structure, the utility model discloses a flat copper line structure can improve the wire casing fullness rate, improves effective copper volume of using, then the motor loss reduces this moment, and efficiency improves, can make motor power density and price/performance ratio all obtain improving simultaneously again. Compared with a loose wire winding structure, the flat copper wire winding can be manufactured into a formed winding, the winding is easy to process, the wire inserting speed is high, the operation is simple, the wire inserting cost of the stator/rotor winding is saved, and the method is suitable for large-batch full-automatic production.
The utility model also provides a synchronous flat copper line motor stator of permanent magnetism, rotor, including stator and rotor, stator and rotor are respectively by having the aforesaid the stator form towards the stack of a plurality of towards the piece of punching of piece and rotor punching structure.
(III) advantageous effects
The above technical scheme of the utility model has following advantage:
1) Each group of double-layer V-shaped permanent magnet grooves form a pole, and two layers of V-shaped magnetic steel of each pole are arranged, so that the direct-axis inductance of the motor is improved, the reluctance torque is increased, the high-efficiency operation area of the driving motor is improved, and the rotating speed range of the motor is expanded;
2) A plurality of groups of permanent magnet grooves with equal interval angles are formed on the rotor punching sheet, so that the embedding process of the permanent magnets is simplified;
3) The two ends of the permanent magnet are provided with air magnetic isolation grooves for preventing magnetic leakage, so that the magnetic leakage flux of each magnetic pole is weakened, the main magnetic flux of the motor is enhanced, and the power factor of the motor in the running process is improved;
4) Each group of double-layer V-shaped permanent magnets are close to the air magnetic isolation groove of the excircle, and the magnetic pole air gap magnetic flux is closer to sine by repair (arc), so that the torque of the groove of the motor and the torque fluctuation of the motor are effectively reduced, and the no-load loss and the NVH (noise, vibration and harshness) of the motor are reduced;
5) The utility model discloses a magnetic circuit optimization, reduce the magnetic leakage flux, increase reluctance torque, reduce the tooth's socket torque, promoted motor moment of torsion and power density, improve PMSM's power factor, the sine of back electromotive force, efficiency and the moment of torsion fluctuation in the work operation, effectively enlarge PMSM's high efficiency operating area, enlarged the weak magnetism speed extension ability of motor;
6) The utility model discloses mainly be applied to and put driven electric motorcycle car driving motor, have high rotational speed, high power density, efficient characteristics not only can reduce whole car manufacturing cost, can also prolong whole car battery life.
In addition to the technical problems addressed by the present invention, the technical features of the constituent technical solutions, and the advantages brought by the technical features of these technical solutions, further description will be made with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is the schematic view of the rotor sheet of the present invention.
Fig. 2 is the schematic diagram of the magnetic steel rotor sheet of the utility model.
Fig. 3 is the stator punching sheet schematic diagram of the utility model.
Fig. 4 is a schematic view of the stator punching sheet with flat copper wire of the present invention.
Fig. 5 is the utility model discloses stator punching and rotor punching assemble the schematic diagram.
In the figure: 1-stator punching sheet, 11-wire slot, 2-rotor punching sheet, 3-first magnetic steel slot group, 31-first magnetic steel slot, 32-first magnetic steel, 33-first inner magnetic isolation slot, 34-first outer magnetic isolation slot, 35-first magnetic steel positioning structure, 4-second magnetic steel slot group, 41-second magnetic steel slot, 42-second magnetic steel, 43-second inner magnetic isolation slot, 44-second outer magnetic isolation slot, 45-second magnetic steel positioning structure, 5-auxiliary slot and 6-magnetic bridge.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "plural groups" mean two or more, and the terms "plurality", "several", and "several groups" mean one or more. In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are used, they are only used for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention, if the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or positional relationships shown in the drawings. Furthermore, the use of the terms first, second and third are used for descriptive purposes only and are not intended to indicate or imply relative importance.
Example 1
As shown in fig. 1, 2 and 5: the utility model provides a synchronous flat copper line motor of permanent magnetism is fixed, rotor punching structure, includes stator punching 1 and rotor punching 2, 1 middle part of stator punching is for holding the hollow structure of rotor punching 2, rotor punching 2 forms the magnetic pole that a plurality of intervals set up along its circumference, sets up 6 grades (the number of poles can design as required) equipartition designs altogether, and 2 middle parts of rotor punching set up the pivot hole, every the magnetic pole includes first magnet steel groove group 3 and second magnet steel groove group 4, be provided with auxiliary groove 5 on the rotor punching 2 outer circumference between first magnet steel groove group 3 and the second magnet steel groove group 4, first magnet steel groove group 3 and second magnet steel groove group 4 are respectively including two first magnet steel grooves 31 and two second magnet steel grooves 41 that are the setting of V style of calligraphy, be provided with first magnet steel 32 and second magnet steel 42 in first magnet steel groove 31 and the second magnet steel groove 41 respectively. The V-shaped openings of the first magnetic steel groove group 3 and the second magnetic steel groove group 4 face the outer side of the rotor punching sheet 2, the second magnetic steel groove group 4 is arranged at the opening of the first magnetic steel groove group 3, and the included angle of the second magnetic steel groove group 4 is not smaller than that of the first magnetic steel groove group 3;
the widths of the first magnetic steel groove 31 and the second magnetic steel groove 41 are both smaller than the distance between the adjacent magnetic poles. The magnetic bridge 6 is formed in the middle of the magnetic pole, and the first magnetic steel groove group 3 and the second magnetic steel groove group 4 are respectively symmetrical about the magnetic bridge 6. The two ends of the first magnet steel groove 31 are respectively provided with a first inner magnet isolation groove 33 and a first outer magnet isolation groove 34, and the two ends of the second magnet steel groove 41 are respectively provided with a second inner magnet isolation groove 43 and a second outer magnet isolation groove 44. And the first magnetic steel groove 31 and the second magnetic steel groove 41 are respectively provided with a first magnetic steel positioning structure 35 and a second magnetic steel positioning structure 45.
Example 2
As shown in fig. 3 and 4, the embodiment is different from embodiment 1 only in that the stator lamination 1 is further limited, specifically, the stator lamination 1 has 36 wire slots 11 which are spaced in the circumferential direction and extend in the axial direction on the surface thereof, and flat copper wires are inserted into the wire slots 11. The structure is simple, the manufacturing process is simplified, the performance of the motor is more stable, and the service life is longer.
Example 3
The embodiment provides a stator and a rotor of a permanent magnet synchronous flat copper wire motor, wherein the stator and the rotor are formed by overlapping a plurality of punching sheets with structures of a stator punching sheet 1 and a rotor punching sheet 2 in embodiments 1 and 2 respectively. The stator and the rotor are assembled to form a 6-pole 36-slot fractional slot stator-rotor combination, so that the air gap flux density harmonic content of the motor is reduced, and the electromagnetic excitation of the motor is reduced. The permanent magnet synchronous motor with the stator and the rotor further optimizes the air gap flux density of the motor through the structural design of the tooth grooves and the magnetic steel grooves, reduces air gap flux density harmonic waves and improves the performance of the fractional-groove permanent magnet embedded motor.
This application has improved the overload capacity of motor effectively, has reduced iron core loss and stray loss, has improved power density, work efficiency and power factor through optimizing automobile-used PMSM's stator towards the piece, the structure of rotor punching and the structure of arranging of permanent magnet, has improved current novel energy automobile's comprehensive properties, replaces the serious traditional power automobile of pollution, improvement environment and energy saving earlier and has certain positive effect.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a synchronous flat copper line motor of permanent magnetism decides, rotor punching structure, includes stator punching (1) and rotor punching (2), the stator punching (1) middle part is for holding the hollow structure of rotor punching (2), rotor punching (2) form the magnetic pole that a plurality of intervals set up along its circumference, its characterized in that: every the magnetic pole includes first magnet steel groove group (3) and second magnet steel groove group (4), be provided with auxiliary groove (5) on rotor punching (2) outer circumference between first magnet steel groove group (3) and second magnet steel groove group (4), first magnet steel groove group (3) and second magnet steel groove group (4) are including two first magnet steel grooves (31) and two second magnet steel grooves (41) that are the setting of V style of calligraphy respectively, be provided with first magnet steel (32) and second magnet steel (42) in first magnet steel groove (31) and second magnet steel groove (41) respectively.
2. The stator and rotor punching structure of the permanent magnet synchronous flat copper wire motor according to claim 1, characterized in that: the widths of the first magnetic steel groove (31) and the second magnetic steel groove (41) are smaller than the distance between the adjacent magnetic poles.
3. The stator and rotor punching structure of the permanent magnet synchronous flat copper wire motor according to claim 2, characterized in that: and a magnetic bridge (6) is formed in the middle of the magnetic pole, and the first magnetic steel slot group (3) and the second magnetic steel slot group (4) are respectively symmetrical about the magnetic bridge (6).
4. The stator and rotor punching structure of the permanent magnet synchronous flat copper wire motor according to claim 3, characterized in that: two ends of the first magnetic steel groove (31) are respectively provided with a first inner magnetic isolation groove (33) and a first outer magnetic isolation groove (34), and two ends of the second magnetic steel groove (41) are respectively provided with a second inner magnetic isolation groove (43) and a second outer magnetic isolation groove (44).
5. The stator and rotor punching structure of the permanent magnet synchronous flat copper wire motor according to claim 4, characterized in that: and a first magnetic steel positioning structure (35) and a second magnetic steel positioning structure (45) are respectively arranged on the first magnetic steel groove (31) and the second magnetic steel groove (41).
6. The stator and rotor punching structure of the permanent magnet synchronous flat copper wire motor according to claim 5, characterized in that: stator punching (1) has along the circumferencial direction keep the interval and at its surface along a plurality of wire casing (11) of axial direction extension, it has flat type copper line to alternate in wire casing (11).
7. The utility model provides a synchronous flat copper line motor of permanent magnetism stator, rotor which characterized in that: the stator and the rotor are respectively formed by overlapping a plurality of punching sheets with the structures of the stator punching sheet (1) and the rotor punching sheet (2) as set forth in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938890.3U CN218472876U (en) | 2022-11-04 | 2022-11-04 | Stator and rotor punching sheet structure of permanent magnet synchronous flat copper wire motor and stator and rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938890.3U CN218472876U (en) | 2022-11-04 | 2022-11-04 | Stator and rotor punching sheet structure of permanent magnet synchronous flat copper wire motor and stator and rotor thereof |
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| Publication Number | Publication Date |
|---|---|
| CN218472876U true CN218472876U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222938890.3U Active CN218472876U (en) | 2022-11-04 | 2022-11-04 | Stator and rotor punching sheet structure of permanent magnet synchronous flat copper wire motor and stator and rotor thereof |
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| Country | Link |
|---|---|
| CN (1) | CN218472876U (en) |
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2022
- 2022-11-04 CN CN202222938890.3U patent/CN218472876U/en active Active
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