CN114362401A - Permanent magnet synchronous motor rotor punching sheet structure for compound electric motorcycle and rotor thereof - Google Patents
Permanent magnet synchronous motor rotor punching sheet structure for compound electric motorcycle and rotor thereof Download PDFInfo
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- CN114362401A CN114362401A CN202210064576.9A CN202210064576A CN114362401A CN 114362401 A CN114362401 A CN 114362401A CN 202210064576 A CN202210064576 A CN 202210064576A CN 114362401 A CN114362401 A CN 114362401A
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Abstract
The invention discloses a permanent magnet synchronous motor rotor punching structure for a compound electric motorcycle, which comprises a punching body, wherein the punching body is divided into a plurality of sector areas with equal shapes and sizes, a groove group is arranged at the position, close to an arc edge, of each sector area, and each groove group comprises an inner layer groove body and an outer layer groove body which are respectively used for mounting magnetic steel; the inner-layer groove body comprises two inner-layer side grooves which are symmetrically arranged by taking the central line of the sector area as the center, the two inner-layer side grooves are arranged in a V shape, the V-shaped opening formed by the two inner-layer side grooves faces the arc edge of the sector area, the two inner-layer side grooves are both arc-shaped, the ends, close to the two inner-layer side grooves, of the two inner-layer side grooves are respectively provided with an inner-layer middle magnetism isolating groove, and the ends, far away from the two inner-layer side grooves, of the two inner-layer side grooves are respectively provided with an inner-layer side magnetism isolating groove; the outer layer groove body is symmetrically arranged on the central line of the sector area. The invention also discloses a permanent magnet synchronous motor rotor for the compound electric motorcycle.
Description
Technical Field
The invention relates to the technical field of motor equipment, in particular to a permanent magnet synchronous motor rotor punching sheet structure for a compound electric motorcycle and a rotor thereof.
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 power. Compared with an electric automobile, the electric motorcycle is more convenient and smoother to travel, saves more energy and is lower in cost. Particularly, in the current urban center with traffic jam, the two-three line city with lower income cost and the urban traffic are the preferred choice for traveling.
However, in the design and practical application of most of the existing permanent magnet synchronous motor rotors for compound electric motorcycles, the problems which cannot be ignored exist, such as large motor leakage flux, low power factor, poor sine of back electromotive force, low efficiency, large vibration noise and small high-efficiency operation area.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a rotor punching structure of a permanent magnet synchronous motor for a compound electric motorcycle and a rotor thereof.
The technical scheme adopted by the invention is as follows:
a PMSM rotor punching structure for a compound electric motorcycle comprises a punching body, wherein the punching body is divided into a plurality of sector areas with equal shapes and sizes, a slot group is arranged at the position, close to an arc edge, of each sector area, the slot group comprises an inner layer slot body and an outer layer slot body, the inner layer slot body and the outer layer slot body are used for mounting magnetic steel respectively, and the outer layer slot body is arranged on one side, close to the arc edge, of the inner layer slot body; the inner-layer groove body comprises two inner-layer side grooves which are symmetrically arranged by taking the central line of the sector area as the center, the two inner-layer side grooves are arranged in a V shape, the V-shaped opening formed by the two inner-layer side grooves faces the arc edge of the sector area, the two inner-layer side grooves are both arc-shaped, the ends, close to the two inner-layer side grooves, of the two inner-layer side grooves are respectively provided with an inner-layer middle magnetism isolating groove, a gap is formed between the two inner-layer middle magnetism isolating grooves, and the ends, far away from the two inner-layer side grooves, of the two inner-layer side grooves are respectively provided with an inner-layer side magnetism isolating groove; the outer layer groove body is symmetrically arranged on the central line of the sector area.
Preferably, the two ends of one side edge of the inner layer side groove, which is far away from the arc edge of the sector area, are respectively provided with an inner layer side convex groove which protrudes outwards, the inner layer side convex groove protrudes along the radial direction of the inner layer side groove, and the inner layer side convex groove is communicated with the inner layer side groove.
Preferably, one side of the joint of the inner layer middle magnetism isolating groove and the inner layer side groove, which is close to the circle center of the sector area, is sunken towards the arc edge direction of the sector area, and one side of the inner layer middle magnetism isolating groove, which is close to the central line of the sector area, is parallel to each other.
Preferably, the connection position of the inner layer side magnetism isolating groove and the inner layer side groove is recessed towards the central line direction of the sector from the side far away from the central line of the sector.
Preferably, the outer-layer groove body comprises two first outer-layer side grooves which are arranged in a V shape and are symmetrically arranged with respect to the central line of the sector, the opening of the V shape faces the arc edge of the sector, the first outer-layer side grooves are rectangular, two corners of one side edge of each first outer-layer side groove close to the central line of the sector are respectively provided with a first outer-layer side convex groove which protrudes outwards, one end of one side edge of each first outer-layer side groove far away from the central line of the sector, close to the circle center of the sector, is provided with a first outer-layer side convex groove, the protruding direction of each first outer-layer side convex groove is consistent with the direction of two side edges of each first outer-layer side groove, one end of one side edge of each first outer-layer side groove close to the central line of the sector, close to the arc edge of the sector, is provided with a first outer-layer middle-layer magnetic-isolating groove which is triangular, one side of each first outer-layer middle-isolating magnetic-groove is communicated with the first outer-layer side groove, and the included angle between the edge of the first outer middle magnetism isolating groove and one edge of the other two edges of the first outer middle magnetism isolating groove, which is close to the arc edge of the sector area, is an acute angle, a first outer side magnetism isolating groove is arranged at one end, which is close to the arc edge of the sector area, of one side edge, which is far away from the central line of the sector area, of the first outer side magnetism isolating groove, the first outer side magnetism isolating groove is triangular, one edge of the first outer side magnetism isolating groove is communicated with the first outer side magnetism isolating groove, and the included angle between the edge of the first outer side magnetism isolating groove and one edge, which is close to the arc edge of the sector area, of the other two edges of the first outer side magnetism isolating groove is an acute angle.
Preferably, the outer layer groove body comprises a first outer layer middle groove and second outer layer side magnetism isolating grooves arranged at two sides of the first outer layer middle groove, the first outer layer middle groove is rectangular and symmetrically arranged at the center line of the sector area, two corners of one side of the first outer layer middle groove close to the circle center of the sector area are respectively provided with an outer layer middle convex groove which is convex outwards, the convex direction of the middle convex groove of the outer layer is consistent with the directions of two side edges of the middle groove of the first outer layer, the side magnetic isolation groove of the second outer layer is arranged at two corners of one side of the middle groove of the first outer layer, which is close to the arc edge of the sector area, the side magnetic isolation groove of the second outer layer is trapezoidal, one waist edge of the trapezoid is communicated with the first outer layer middle groove, the shorter bottom edge of the trapezoid is positioned at one side of the longer bottom edge close to the arc edge of the sector area, the included angle between the bottom edge of the trapezoid and one side edge of the first outer layer middle groove close to the arc edge of the sector area is an obtuse angle.
Preferably, the outer layer groove body comprises a second outer layer middle groove and second outer layer side grooves arranged on two sides of the second outer layer middle groove, the second outer layer middle groove is rectangular and symmetrically arranged at the central line of the sector area, third outer layer side magnetism isolating grooves are respectively arranged at the positions, close to the arc edge of the sector area, of two side edges of the second outer layer middle groove, the third outer layer side magnetism isolating grooves are triangular, one edge of each third outer layer side magnetism isolating groove is communicated with the second outer layer middle groove, an included angle between the edge of each third outer layer side magnetism isolating groove and one edge, close to the arc edge of the sector area, of the other two edges of each third outer layer side magnetism isolating groove is an acute angle, the second outer layer side groove is triangular, and one edge, close to the second outer layer middle groove, of the second outer layer side groove and one edge, close to the arc edge of the sector area, of the other two edges of each third outer layer side magnetism isolating groove are arranged in parallel, and a gap is formed between the second outer layer side groove and the third outer layer side magnetism isolating groove.
A permanent magnet synchronous motor rotor for a compound electric motorcycle is formed by overlapping a plurality of punching sheets with the permanent magnet synchronous motor rotor punching sheet structure for any compound electric motorcycle.
The invention has the beneficial effects that: the rotor air gap flux density manufactured by the rotor punching sheet structure is more sinusoidal, the harmonic content of the motor can be reduced, the efficiency of the motor can be improved, the reluctance torque of the motor can be increased, the output torque of the motor can be increased, and the field weakening and speed expanding capability of the motor can be improved.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 1 of the present invention after magnetic steel assembly;
FIG. 3 is a schematic structural diagram of a single sector in example 1 of the present invention;
FIG. 4 is a schematic structural diagram of a single sector after magnetic steel is assembled in embodiment 1 of the present invention;
FIG. 5 is a schematic structural diagram of a single sector in example 2 of the present invention;
FIG. 6 is a schematic structural diagram of a single sector in example 3 of the present invention;
reference numerals: 10. towards the piece body, 20, the sectorial region, 30, inlayer lateral part groove, 31, inlayer middle part magnetic isolation groove, 32, inlayer lateral part magnetic isolation groove, 33, inlayer lateral part tongue, 40, first outer layer lateral part groove, 41, first outer layer lateral part tongue, 42, first outer layer middle part magnetic isolation groove, 43, first outer layer lateral part magnetic isolation groove, 44, first outer layer middle part groove, 45, second outer layer lateral part magnetic isolation groove, 46, outer layer middle part tongue, 47, second outer layer middle part groove, 48, second outer layer groove, 49, third outer layer lateral part magnetic isolation groove, 50 the layer side, the magnet steel.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-4, a permanent magnet synchronous motor rotor punching structure for a compound electric motorcycle comprises a punching body 10, wherein the punching body 10 is divided into a plurality of sector areas 20 with equal shapes and sizes, a slot group is arranged at a position, close to an arc edge, of each sector area 20, the slot group comprises an inner layer slot body and an outer layer slot body which are respectively used for mounting magnetic steel 50, and the outer layer slot body is arranged at one side, close to the arc edge, of each sector area 20; the inner layer groove body comprises two inner layer side grooves 30 which are symmetrically arranged by taking the central line of the sector area 20 as the center, the two inner layer side grooves 30 are arranged in a V shape, the opening of the V shape formed by the two inner layer side grooves 30 is arranged towards the arc edge of the sector area 20, the two inner layer side grooves 30 are both arc-shaped, the ends, close to the two inner layer side grooves 30, of the two inner layer side grooves are respectively provided with an inner layer middle magnetism isolating groove 31, a gap is formed between the two inner layer middle magnetism isolating grooves 31, and the ends, far away from the two inner layer side grooves 30, of the two inner layer side grooves are respectively provided with an inner layer side magnetism isolating groove 32; the outer layer groove bodies are symmetrically arranged on the central line of the sector area 20.
Specifically, two ends of one side of the inner-layer side groove 30 away from the arc edge of the sector 20 are respectively provided with an inner-layer side convex groove 33 protruding outwards, the inner-layer side convex groove 33 protrudes along the radial direction of the inner-layer side groove 30, and the inner-layer side convex groove 33 is communicated with the inner-layer side groove 30.
Specifically, one side of the joint of the inner middle magnetism isolating groove 31 and the inner side groove 30, which is close to the center of the sector 20, is recessed towards the arc side of the sector 20, and one side of the two inner middle magnetism isolating grooves 31, which is close to the center line of the sector 20, is parallel to each other.
Specifically, the connection point of the inner layer side magnetism isolating groove 32 and the inner layer side groove 30 is recessed towards the central line direction of the sector 20, wherein the side is far away from the central line of the sector 20.
Specifically, the outer-layer groove body comprises two first outer-layer side grooves 40 which are arranged in a V shape and are symmetrically arranged with respect to the central line of the sector area 20, the opening of the V shape faces the arc edge of the sector area 20, the first outer-layer side grooves 40 are rectangular, two corners of one side edge of each first outer-layer side groove 40 close to the central line of the sector area 20 are respectively provided with a first outer-layer side convex groove 41 which protrudes outwards, one end of one side edge of each first outer-layer side groove 40 far away from the central line of the sector area 20, close to the circle center of the sector area 20, is provided with a first outer-layer side convex groove 41, the protruding direction of each first outer-layer side convex groove 41 is consistent with the direction of two side edges of each first outer-layer side groove 40, one end of one side edge of each first outer-layer side groove 40 close to the central line of the sector area 20, close to the arc edge of the sector area 20, is provided with a first outer-layer middle magnetism isolating groove 42, and the first outer-layer middle magnetism isolating grooves 42 are triangular, one side of the first outer middle magnetism isolating groove 42 is communicated with the first outer side groove 40, an included angle between the side of the first outer middle magnetism isolating groove 42 and one side of the other two sides of the first outer middle magnetism isolating groove 42, which is close to the arc side of the sector 20, is an acute angle, one end, which is close to the arc side of the sector 20, of one side of the first outer side groove 40, which is far away from the center line of the sector 20, is provided with a first outer side magnetism isolating groove 43, the first outer side magnetism isolating groove 43 is triangular, one side of the first outer side magnetism isolating groove 43 is communicated with the first outer side groove 40, and an included angle between the side of the first outer side magnetism isolating groove 43 and one side, which is close to the arc side of the sector 20, of the other two sides of the first outer side magnetism isolating groove 43 is an acute angle.
The clearance between two inlayer middle part magnetism-isolating grooves 31 forms the magnetic bridge, can improve the motor speed, increases the motor weak magnetism speed-expanding ability, and magnet steel 50 passes through inlayer lateral part groove 30 and the fixed setting in first outer lateral part groove 40, and when the motor adjustment was rotated, inlayer lateral part groove 30 and first outer lateral part groove 40 can prevent that magnet steel 50 from removing.
In design, the length of one adjacent side of the middle magnetism isolating groove 31 of the inner layer is larger than the width of the side groove 30 of the inner layer, so that the length of a magnetic bridge between the middle magnetism isolating grooves 31 of the two inner layers is larger than the width of the magnetic steel 50 arranged in the side groove 30 of the inner layer, thereby ensuring that the motor has enough magnetic bridge strength when running at high rotating speed, simultaneously reducing the magnetic leakage of the magnetic steel 50 as much as possible and saving the using amount of the magnetic steel 50; the width of inlayer lateral part magnetism-isolating groove 32 is less than the width of inlayer lateral part groove 30, and the width when magnet steel 50 is great in this design, and when motor stator tooth width is less, can adjust motor magnetic pole width and motor polar arc coefficient in a flexible way for reduce motor torque fluctuation when promoting the motor moment of torsion.
Form the magnetic bridge between two first outer middle part magnetism-isolating grooves 42, can promote the motor rotational speed, increase the weak magnetic capacity of motor, and the width of first outer lateral part groove 40 all is less than the width of inlayer lateral part groove 30, 50 quantity of reducible outer magnet steel, outer magnet steel 50 is narrower simultaneously can reduce outer magnet steel 50's eddy current loss, promotes magnet steel 50's demagnetization ability. The opposite one side of two first outer middle part magnetism-isolating grooves 42 is parallel to each other, and length all is greater than the width in first outer lateral part groove 40 for the length of magnetic bridge is longer between two first outer middle part magnetism-isolating grooves 42, has sufficient magnetic bridge intensity when guaranteeing the high-speed operation of motor, reduces the magnetic steel 50 magnetic leakage as far as simultaneously, saves the 50 quantities of magnetic steel. First outer lateral part magnetism-isolating groove 43 can play the effect of adjustment towards magnetic field intensity saturation degree to make the air gap magnetic density more close the sine, can effectively restrain motor higher harmonic, reduce motor torque fluctuation, reduce motor noise, promote motor efficiency.
Example 2
The embodiment is substantially the same as embodiment 1, except that the structure of the outer layer tank body is different, as shown in fig. 5, the outer layer tank body in this embodiment includes a first outer layer middle groove 44 and second outer layer side magnetism isolating grooves 45 disposed at both sides of the first outer layer middle groove 44, the first outer layer middle groove 44 is rectangular and symmetrically disposed at the center line of the sector 20, two corners of one side of the first outer layer middle groove 44 near the center of the sector 20 are respectively provided with an outer layer middle convex groove 46 protruding outwards, the protruding direction of the outer layer middle convex groove 46 is consistent with the directions of both sides of the first outer layer middle groove 44, the second outer layer side magnetism isolating grooves 45 are disposed at two corners of one side of the first outer layer middle groove 44 near the arc side of the sector 20, the second outer layer side magnetism isolating grooves 45 are trapezoidal, one waist side of the trapezoid is communicated with the first outer layer middle groove 44, the shorter base of the trapezoid is located on the side of the longer base adjacent the arc of sector 20, and the angle between the base of the trapezoid and the side of the first outer layer middle slot 44 adjacent the arc of sector 20 is obtuse.
The width of first outer layer middle part groove 44 is less than the width of inlayer lateral part groove 30, and 50 quantity of reducible outer magnet steel, outer magnet steel 50 can reduce outer magnet steel 50's eddy current loss more narrowly simultaneously, promote magnet steel 50's demagnetization ability. The magnetic leakage of the magnetic steel 50 can be reduced by the second outer layer side magnetism isolating groove 45, and the using amount of the magnetic steel 50 is saved. The second outer layer side magnetism-isolating groove 45 can also play a role in adjusting the saturation degree of the magnetic field intensity of the punching sheet, so that the air gap magnetic density is closer to sine, the higher harmonics of the motor can be effectively inhibited, the torque fluctuation of the motor is reduced, the noise of the motor is reduced, and the motor efficiency is improved.
Example 3
The present embodiment is substantially the same as embodiment 1, except that the structure of the outer layer tank body is different, as shown in fig. 6, the outer layer tank body in the present embodiment includes a second outer layer middle groove 47 and second outer layer side grooves 48 disposed at both sides of the second outer layer middle groove 47, the second outer layer middle groove 47 is rectangular and symmetrically disposed at the center line of the sector 20, both side edges of the second outer layer middle groove 47 are provided with third outer layer side magnetism isolating grooves 49 at ends close to the arc edges of the sector 20, respectively, the third outer layer side magnetism isolating grooves 49 are triangular, one edge of the third outer layer side magnetism isolating groove 49 is communicated with the second outer layer middle groove 47, an included angle between the edge of the third outer layer side magnetism isolating groove 49 and one edge of the other two edges of the third outer layer side magnetism isolating groove 49 close to the arc edges of the sector 20 is an acute angle, the second outer layer side groove 48 is triangular, and one side of the second outer layer side groove 48 close to the second outer layer middle groove 47 and one side of the other two sides of the third outer layer side magnetism isolating groove 49 close to the arc side of the sector 20 are arranged in parallel, and a gap is formed between the second outer layer side groove 48 and the third outer layer side magnetism isolating groove 49.
The width of second outer layer middle part groove 47 is less than the width of inlayer lateral part groove 30, and 50 quantity of reducible outer magnet steel, outer magnet steel 50 can reduce outer magnet steel 50's eddy current loss more narrowly simultaneously, promote magnet steel 50's demagnetization ability. A magnetic bridge is formed between one side of the second outer layer side groove 48 facing the third outer layer side magnetic isolation groove 49 and the third outer layer side magnetic isolation groove 49, so that the rotating speed of the motor can be increased, and the flux weakening capability of the motor can be improved. The magnetic flux leakage of the magnetic steel 50 can be reduced by the second outer layer side groove 48 and the third outer layer side magnetism isolating groove 49, and the using amount of the magnetic steel 50 is saved. The third outer layer side magnetism-isolating groove 49 can also play a role in adjusting the saturation degree of the magnetic field intensity of the punching sheet, so that the air gap magnetic density is closer to sine, the higher harmonics of the motor can be effectively inhibited, the torque fluctuation of the motor is reduced, the noise of the motor is reduced, and the motor efficiency is improved.
Example 4
A permanent magnet synchronous motor rotor for a compound electric motorcycle is formed by superposing a plurality of punching sheets of the permanent magnet synchronous motor rotor punching sheet structure for the compound electric motorcycle in any one of embodiments 1 to 3.
The rotor air gap flux density manufactured by the rotor punching sheet structure is more sinusoidal, the harmonic content of the motor can be reduced, the efficiency of the motor can be improved, the reluctance torque of the motor can be increased, the output torque of the motor can be increased, and the field weakening and speed expanding capability of the motor can be improved.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The rotor punching structure of the permanent magnet synchronous motor for the compound electric motorcycle is characterized by comprising a punching body (10), wherein the punching body (10) is divided into a plurality of sector areas (20) with equal shapes and sizes, a groove group is arranged at the position, close to an arc edge, of each sector area (20) and comprises an inner layer groove body and an outer layer groove body, the inner layer groove bodies and the outer layer groove bodies are used for mounting magnetic steel (50), and the outer layer groove bodies are arranged at one sides, close to the arc edge, of the inner layer groove bodies, of the sector areas (20); the inner-layer groove body comprises two inner-layer side grooves (30) which are symmetrically arranged by taking the central line of the sector area (20) as the center, the two inner-layer side grooves (30) are arranged in a V shape, the V-shaped opening formed by the two inner-layer side grooves (30) faces the arc edge of the sector area (20), the two inner-layer side grooves (30) are both arc-shaped, the ends, close to the two inner-layer side grooves (30), of the two inner-layer side grooves are respectively provided with an inner-layer middle magnetism isolating groove (31), a gap is formed between the two inner-layer middle magnetism isolating grooves (31), and the ends, far away from the two inner-layer side grooves (30), of the two inner-layer side grooves are respectively provided with an inner-layer side magnetism isolating groove (32); the outer layer groove bodies are symmetrically arranged on the central line of the sector area (20).
2. The rotor punching structure of the PMSM for the compound electric motorcycle according to claim 1, wherein inner side grooves (33) protruding outwards are respectively formed at two ends of one side edge of the inner side groove (30) away from the arc edge of the sector (20), the inner side grooves (33) protrude in the radial direction of the inner side groove (30), and the inner side grooves (33) are communicated with the inner side groove (30).
3. The rotor punching structure of the PMSM for the compound electric motorcycle as claimed in claim 2, wherein one side of the joint of the inner middle magnetism isolating groove (31) and the inner side groove (30) close to the center of the sector (20) is recessed towards the arc side of the sector (20), and one sides of the two inner middle magnetism isolating grooves (31) close to the center line of the sector (20) are parallel to each other.
4. The rotor punching structure of the PMSM for the compound electric motorcycle according to claim 3, wherein the side of the connection between the inner layer side magnetism isolating groove (32) and the inner layer side groove (30) far away from the central line of the sector (20) is concave towards the central line direction of the sector (20).
5. The rotor punching structure of the PMSM for the compound electric motorcycle according to claim 4, wherein the outer layer slot body comprises two first outer layer side slots (40) which are arranged in a V shape and are symmetrically arranged with respect to the center line of the sector area (20), the opening of the V shape faces the arc side of the sector area (20), the first outer layer side slots (40) are rectangular, two corners of one side of the first outer layer side slots (40) close to the center line of the sector area (20) are respectively provided with a first outer layer side convex slot (41) which protrudes outwards, one end of one side of the first outer layer side slots (40) far away from the center line of the sector area (20) close to the circle center of the sector area (20) is provided with a first outer layer side convex slot (41), the protruding direction of the first outer layer side convex slot (41) is consistent with the direction of the two sides of the first outer layer side slots (40), a first outer layer middle magnetism isolating groove (42) is arranged at one end, close to the arc edge of the sector area (20), of one side edge, close to the central line of the sector area (20), of the first outer layer side groove (40), the first outer layer middle magnetism isolating groove (42) is triangular, one side of the first outer layer middle magnetism isolating groove (42) is communicated with the first outer layer side groove (40), an included angle between the side of the first outer layer middle magnetism isolating groove (42) and one side, close to the arc edge of the sector area (20), of the other two sides of the first outer layer middle magnetism isolating groove (42) is an acute angle, a first outer layer side magnetism isolating groove (43) is arranged at one end, close to the arc edge of the sector area (20), of one side edge, far away from the central line of the sector area (20), of the first outer layer side magnetism isolating groove (43), the first outer layer side magnetism isolating groove (43) is triangular, and one side of the first outer layer side magnetism isolating groove (43) is communicated with the first side groove (40), and an included angle between the edge of the first outer layer side magnetism isolating groove (43) and one edge of the other two edges of the first outer layer side magnetism isolating groove (43) close to the arc edge of the sector area (20) is an acute angle.
6. The rotor punching structure of the PMSM for the compound electric motorcycle according to claim 4, wherein the outer layer slot body comprises a first outer layer middle slot (44) and second outer layer side magnetism isolating slots (45) arranged at two sides of the first outer layer middle slot (44), the first outer layer middle slot (44) is rectangular and symmetrically arranged at the center line of the sector area (20), two corners of one side of the first outer layer middle slot (44) close to the circle center of the sector area (20) are respectively provided with an outer layer middle convex slot (46) protruding outwards, the protruding direction of the outer layer middle convex slot (46) is consistent with the direction of two sides of the first outer layer middle slot (44), the second outer layer side magnetism isolating slots (45) are arranged at two corners of one side of the first outer layer middle slot (44) close to the arc edge of the sector area (20), the second outer layer side magnetism isolating slots (45) are trapezoidal, one waist edge of the trapezoid is communicated with the first outer layer middle groove (44), the shorter bottom edge of the trapezoid is positioned on one side of the longer bottom edge close to the arc edge of the sector area (20), and the included angle between the bottom edge of the trapezoid and one side edge of the first outer layer middle groove (44) close to the arc edge of the sector area (20) is an obtuse angle.
7. The rotor punching structure of the PMSM for the compound electric motorcycle according to claim 4, wherein the outer layer slot bodies include a second outer layer middle slot (47) and second outer layer side slots (48) arranged at both sides of the second outer layer middle slot (47), the second outer layer middle slot (47) is rectangular and symmetrically arranged at the center line of the sector area (20), third outer layer side magnetism isolating slots (49) are respectively arranged at the two sides of the second outer layer middle slot (47) near the arc side of the sector area (20), the third outer layer side magnetism isolating slots (49) are triangular, one side of each third outer layer side magnetism isolating slot (49) is communicated with the second outer layer middle slot (47), and the included angle between the side of each third outer layer side magnetism isolating slot (49) and the side of the other two sides of each third outer layer side magnetism isolating slot (49) near the arc side of the sector area (20) is an acute angle, the second outer layer side groove (48) is triangular, one side of the second outer layer side groove (48) close to the second outer layer middle groove (47) and one side of the other two sides of the third outer layer side magnetism isolating groove (49) close to the arc side of the sector (20) are arranged in parallel, and a gap is formed between the second outer layer side groove (48) and the third outer layer side magnetism isolating groove (49).
8. A PMSM rotor for a compound electric motorcycle is characterized by being formed by stacking a plurality of punching sheets with the PMSM rotor punching sheet structure for the compound electric motorcycle as claimed in any one of claims 1-7.
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| CN202210064576.9A CN114362401A (en) | 2022-01-20 | 2022-01-20 | Permanent magnet synchronous motor rotor punching sheet structure for compound electric motorcycle and rotor thereof |
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| CN202210064576.9A CN114362401A (en) | 2022-01-20 | 2022-01-20 | Permanent magnet synchronous motor rotor punching sheet structure for compound electric motorcycle and rotor thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166350A (en) * | 2011-12-09 | 2013-06-19 | 通用汽车环球科技运作有限责任公司 | Rotor barrier shaping for demagnetization mitigation in an internal permanent magnet machine |
| CN109167449A (en) * | 2018-10-30 | 2019-01-08 | 上海元城汽车技术有限公司 | Motor rotor punching sheet and magneto |
| CN209692565U (en) * | 2019-05-24 | 2019-11-26 | 上海汽车变速器有限公司 | Permanent-magnetic synchronous motor rotor lamination structure |
| CN113241867A (en) * | 2021-06-30 | 2021-08-10 | 擎风电驱动科技(苏州)有限公司 | Permanent magnet synchronous motor rotor punching sheet structure and rotor thereof |
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2022
- 2022-01-20 CN CN202210064576.9A patent/CN114362401A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166350A (en) * | 2011-12-09 | 2013-06-19 | 通用汽车环球科技运作有限责任公司 | Rotor barrier shaping for demagnetization mitigation in an internal permanent magnet machine |
| CN109167449A (en) * | 2018-10-30 | 2019-01-08 | 上海元城汽车技术有限公司 | Motor rotor punching sheet and magneto |
| CN209692565U (en) * | 2019-05-24 | 2019-11-26 | 上海汽车变速器有限公司 | Permanent-magnetic synchronous motor rotor lamination structure |
| CN113241867A (en) * | 2021-06-30 | 2021-08-10 | 擎风电驱动科技(苏州)有限公司 | Permanent magnet synchronous motor rotor punching sheet structure and rotor thereof |
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