Rotor punching sheet structure
By designing V-shaped magnet slots, inner and outer air-insulating slots, and outer magnetic bridges on the rotor laminations, the problems of existing rotor lamination magnet slots being unable to generate motor reluctance torque and magnet leakage have been solved, thereby increasing the motor output torque and improving efficiency.
Patent Information
- Application Number
- CN202520440030.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-13
AI Technical Summary
The existing rotor laminations have a straight-line magnet slot structure, which cannot generate motor reluctance torque, making it difficult to increase the output torque. The magnets have serious magnetic leakage, and the magnetic pole air gap waveform is not easy to approach positive rotation, resulting in low motor efficiency.
It adopts a V-shaped magnetic steel groove with a V-shaped magnetic steel groove position at its edge, and an inner and outer diameter air isolation magnetic groove at the bottom. An outer magnetic bridge and an inner magnetic bridge are provided on the outside. The magnetic pole curvature is adjusted by combining the shaping structure. The stator is equipped with an iron core and heat dissipation groove, and copper wire is fixed to form a ring array.
It increases the motor's output torque, reduces magnet leakage, and makes the air gap waveform of the magnetic poles closer to sine rotation, thus improving motor efficiency.
Smart Images
Figure CN223912333U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a punching piece structure, concretely rotor punching piece structure belongs to rotor punching piece technical field. BACKGROUND
[0002] Rotor punching piece is the component of cast aluminum rotor, usually made of high conductivity material (such as silicon steel, copper, aluminum, etc.), composed of multiple thin sheets, a certain number of slots are opened on these sheets, when stacked together, the main structure of the rotor and the space of coil winding are formed, the rotor punching piece is installed at the connecting part of the motor rotor, used for conducting current and bearing electromagnetic force.
[0003] However, the magnetic steel slot on the current rotor punching piece is usually circumferential array, multiple slot bodies in the form of a linear structure are opened, the angle of the slot body is not inclined, the slot body in the form of a linear structure cannot generate motor magnetic resistance torque, and it is not easy to increase the motor output torque; the bottom of the magnetic steel slot is connected in solid, the air magnetic separation groove is not arranged on the punching piece body, the magnetic pole arc radian coefficient cannot be adjusted, and it is difficult to reduce magnetic steel magnetic leakage; the magnetic pole air gap waveform is not easy to approach positive rotation, the motor torque fluctuation cannot be reduced, and the motor efficiency cannot be improved. SUMMARY
[0004] The utility model discloses a rotor punching piece structure, the V-shaped magnetic steel slot of larger opening on the punching piece can generate motor magnetic resistance torque, can increase motor output torque; the air magnetic separation groove is arranged on the punching piece body, can adjust the magnetic pole arc radian coefficient, can reduce magnetic steel magnetic leakage; the magnetic pole air gap waveform is easier to approach positive rotation.
[0005] The utility model discloses a rotor punching piece structure through the following technical scheme to realize above-mentioned purpose, rotor punching piece structure, including rotor punching piece and stator, the outside of rotor punching piece is equipped with stator, be equipped with multiple V-shaped magnetic steel grooves on rotor punching piece, every group V-shaped magnetic steel groove's edge all relatively open four V-shaped magnetic steel groove positions, and every group V-shaped magnetic steel groove's bottom all is equipped with the inside diameter air magnetic separation groove, the inside diameter air magnetic separation groove with V-shaped magnetic steel groove intercommunication, every group V-shaped magnetic steel groove's both ends all are equipped with the outside diameter air magnetic separation groove, the inside of V-shaped magnetic steel groove places magnetic steel body in linear groove body, two V-shaped magnetic steel grooves between all are equipped with internal magnetic bridge, the outside of rotor punching piece is equipped with multiple external magnetic bridge in V-shaped magnetic steel groove outside, the punching piece on rotor is opened and is equipped with the hole and the pin hole in ring array.
[0006] Preferably, multiple V-shaped magnetic steel grooves are distributed in ring array on the rotor punching piece, and the opening of the V-shaped magnetic steel groove is towards the outer diameter of the rotor punching piece.
[0007] Preferably, the length of the external magnetic bridge is greater than the length of the V-shaped magnetic steel groove, and the external magnetic bridge is distributed in ring array.
[0008] Preferably, two ends of each group of V-shaped magnetic steel grooves are oppositely provided with a first shaping structure, and the first shaping structure is in an arc structure.
[0009] Preferably, two ends of each group of V-shaped magnetic steel grooves are oppositely provided with a second shaping structure, and the second shaping structure is in an arc structure, and the arc of the second shaping structure is greater than that of the first shaping structure.
[0010] Preferably, two sides of the inner diameter air magnetic isolation groove are oppositely provided with a third shaping structure and a fourth shaping structure, the third shaping structure is close to the outer diameter of the rotor punching sheet, the fourth shaping structure is close to the inner diameter of the rotor punching sheet, and the arc of the third shaping structure is smaller than that of the fourth shaping structure.
[0011] Preferably, the stator comprises an iron core, and the outer side of the rotor punching sheet is provided with the iron core.
[0012] Preferably, the stator further comprises a heat dissipation groove and a copper wire, the inner wall of the iron core is annularly and equidistantly provided with the heat dissipation grooves, and the interiors of the heat dissipation grooves are all provided with the copper wires fixed with the iron core.
[0013] The rotor punching sheet is provided with a plurality of groups of V-shaped magnetic steel grooves, four V-shaped magnetic steel groove positions are oppositely provided at the edges of each group of V-shaped magnetic steel grooves, the V-shaped magnetic steel groove positions realize positioning and installation of the magnetic steel body, the openings of the V-shaped magnetic steel grooves face the outer diameter of the rotor punching sheet, the motor magnetic resistance torque is generated, the motor output torque can be increased, the inner diameter air magnetic isolation grooves are arranged at the bottoms of each group of V-shaped magnetic steel grooves, the magnetic steel leakage is reduced, the outer diameter air magnetic isolation grooves are arranged at the two ends of each group of V-shaped magnetic steel grooves, the magnetic steel leakage is reduced, the magnetic pole air gap waveform is closer to positive rotation, and the motor efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the utility model;
[0015] Figure 2 It is a connecting structure schematic view of the rotor punching sheet, the V-shaped magnetic steel groove and the inner diameter air magnetic isolation groove of the utility model;
[0016] Figure 3 It is a connecting structure schematic view of the rotor punching sheet and the magnetic steel body of the utility model;
[0017] Figure 4 It is a connecting structure schematic view of the iron core and the heat dissipation groove of the utility model;
[0018] Figure 5 It is a connecting structure schematic view of the iron core, the heat dissipation groove and the copper wire of the utility model.
[0019] Fig. 1, rotor lamination; 2, stator; 201, core; 202, copper wire; 203, heat dissipation groove; 3, weight-removing hole; 4, pin hole; 5, V-shaped magnetic steel groove; 6, outer magnetic bridge; 7, V-shaped magnetic steel groove position; 8, outer diameter air gap magnetic groove; 81, first profile modification structure; 82, second profile modification structure; 9, inner diameter air gap magnetic groove; 91, third profile modification structure; 92, fourth profile modification structure; 10, inner magnetic bridge; 11, magnetic steel body. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0021] Please refer to Figures 1-5 As shown in the figure, the rotor lamination structure comprises a rotor lamination 1 and a stator 2. The rotor lamination 1 is provided with the stator 2 on the outer side. The rotor lamination 1 is provided with a plurality of V-shaped magnetic steel grooves 5. Four V-shaped magnetic steel groove positions 7 are oppositely arranged at the edges of each V-shaped magnetic steel groove 5. An inner diameter air gap magnetic groove 9 is arranged at the bottom of each V-shaped magnetic steel groove 5. The inner diameter air gap magnetic groove 9 is in communication with the V-shaped magnetic steel groove 5. An outer diameter air gap magnetic groove 8 is arranged at the two ends of each V-shaped magnetic steel groove 5. A magnetic steel body 11 is arranged in the V-shaped magnetic steel groove 5. An inner magnetic bridge 10 is arranged between two adjacent V-shaped magnetic steel grooves 5. A plurality of outer magnetic bridges 6 are arranged on the outer side of the V-shaped magnetic steel groove 5. A weight-removing hole 3 and a pin hole 4 are annularly arranged on the rotor lamination 1. The pin hole is used to stack the motor rotor lamination into one body, so as to prevent the motor lamination from being scattered and causing the motor NVH to be poor and the efficiency to be low. The weight-removing hole is used to remove the weight of the motor rotor, so as to reduce the moment of inertia of the motor.
[0022] As a technical optimization scheme of the utility model, a plurality of V-shaped magnetic steel grooves 5 are annularly arranged on the rotor lamination 1, and the opening of the V-shaped magnetic steel groove 5 is towards the outer diameter of the rotor lamination 1, so as to increase the output torque of the motor.
[0023] As a technical optimization scheme of the utility model, the length of the outer magnetic bridge 6 is greater than the length of the V-shaped magnetic steel groove 5, and the outer magnetic bridge 6 is annularly arranged, so as to generate the magnetic drag torque of the motor.
[0024] As a kind of technical optimization scheme of the utility model, the two ends of each V-shaped magnetic steel groove 5 are oppositely provided with profiled structure one 81, and the profiled structure one 81 is in arc structure, the two ends of each V-shaped magnetic steel groove 5 are oppositely provided with profiled structure two 82, and the profiled structure two 82 is in arc structure, the arc of the profiled structure two 82 is greater than the arc of profiled structure one 81, the two sides of the inner diameter air magnetic separation groove 9 are oppositely provided with profiled structure three 91 and profiled structure four 92, the profiled structure three 91 is close to the outer diameter of rotor punching sheet 1, the profiled structure four 92 is close to the inner diameter of rotor punching sheet 1, and the arc of the profiled structure three 91 is less than the arc of the profiled structure four 92; Reduce magnetic steel magnetic flux leakage, adjust magnetic pole arc coefficient.
[0025] As a kind of technical optimization scheme of the utility model, the stator 2 includes core 201, and the outer side of the rotor punching sheet 1 is provided with core 201, and the stator 2 further includes heat dissipation groove 203 and copper wire 202, the inner wall of the core 201 is annular array equidistantly provided with heat dissipation groove 203, and the inside of multiple heat dissipation grooves 203 is provided with copper wire 202 fixed with core 201, can support core 201 while dissipating heat, increase the stability of structure.
[0026] The utility model discloses a rotor lamination 1 is provided with multiple groups V -shaped magnetic steel groove 5, and the edge of each group V -shaped magnetic steel groove 5 is relatively provided with four V -shaped magnetic steel groove positions 7, and V -shaped magnetic steel groove position 7 realizes the positioning and installation of magnetic steel body 11, and the opening of V -shaped magnetic steel groove 5 is towards the outer diameter of rotor lamination 1, realizes the generation motor magnetic resistance torque, can increase motor output torque, then, the bottom of each group V -shaped magnetic steel groove 5 is provided with inner diameter air gap 9, and the both sides of inner diameter air gap 9 are relatively provided with profiled structure three 91 and profiled structure four 92, and the outer diameter of profiled structure three 91 is close to rotor lamination 1, and the inner diameter of profiled structure four 92 is close to rotor lamination 1, and the arc of profiled structure three 91 is less than the arc of profiled structure four 92, can reduce magnetic steel leakage, adjusts magnetic pole arc radian coefficient, the both ends of each group V -shaped magnetic steel groove 5 are provided with outer diameter air gap 8, and the function is to reduce magnetic steel leakage, and the width of outer diameter air gap 8 is designed to be less than the width of magnetic steel groove, and profiled structure one 81 is set up on the both sides of outer diameter air gap 8, and profiled structure one 81 is arc structure, and the both ends of each group V -shaped magnetic steel groove 5 are relatively provided with profiled structure two 82, and profiled structure two 82 is arc structure, and the arc of profiled structure two 82 is greater than the arc of profiled structure one 81, can adjust magnetic pole arc radian coefficient, also can make magnetic pole air gap wave form more close to positive rotation, thereby reduce motor torque fluctuation, improve motor efficiency, finally, inner magnetic bridge 10 is set up between the adjacent two V -shaped magnetic steel grooves 5, realizes the support of V -shaped magnetic steel groove 5, and rotor lamination 1 is provided with weight-removing hole 3 and pin hole 4 in annular array, realizes the weight-removing of motor rotor, reduces motor moment of inertia, and the rotor lamination 1 is stacked into an integral whole, prevents motor lamination from scattering, causes motor NVH to be poor, and efficiency is low.
[0027] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0028] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A rotor lamination structure comprising a rotor lamination (1) and a stator (2), characterized in that: The outer side of the rotor lamination (1) is provided with a stator (2), a plurality of V-shaped magnetic steel grooves (5) are arranged on the rotor lamination (1), four V-shaped magnetic steel groove positions (7) are arranged at the edges of each group of V-shaped magnetic steel grooves (5), an inner diameter air magnetic separation groove (9) is arranged at the bottom of each group of V-shaped magnetic steel grooves (5), the inner diameter air magnetic separation groove (9) is communicated with the V-shaped magnetic steel groove (5), an outer diameter air magnetic separation groove (8) is arranged at the two ends of each group of V-shaped magnetic steel grooves (5), a magnetic steel body (11) is arranged in the V-shaped magnetic steel groove (5), an inner magnetic bridge (10) is arranged between the two adjacent V-shaped magnetic steel grooves (5), a plurality of outer magnetic bridges (6) are arranged outside the V-shaped magnetic steel groove (5) on the outer side of the rotor lamination (1), and a weight removal hole (3) and a pin hole (4) are arranged in a ring array on the rotor lamination (1).
2. The rotor lamination structure of claim 1, wherein: A plurality of V-shaped magnetic steel grooves (5) are arranged in a ring array on the rotor lamination (1), and the opening of the V-shaped magnetic steel groove (5) is directed to the outer diameter of the rotor lamination (1).
3. The rotor lamination structure of claim 1, wherein: The length of the outer magnetic bridge (6) is greater than the length of the V-shaped magnetic steel groove (5), and the outer magnetic bridge (6) is arranged in a ring array.
4. The rotor lamination structure of claim 1, wherein: Opposite to each group of V-shaped magnetic steel grooves (5), a first shaping structure (81) is arranged at the two ends, and the first shaping structure (81) is in an arc structure.
5. The rotor lamination structure of claim 1, wherein: Opposite to each group of V-shaped magnetic steel grooves (5), a second shaping structure (82) is arranged at the two ends, and the second shaping structure (82) is in an arc structure, and the curvature of the second shaping structure (82) is greater than that of the first shaping structure (81).
6. The rotor lamination structure of claim 1, wherein: Opposite to the inner diameter air magnetic separation groove (9), a third shaping structure (91) and a fourth shaping structure (92) are arranged at the two sides, the third shaping structure (91) is close to the outer diameter of the rotor lamination (1), the fourth shaping structure (92) is close to the inner diameter of the rotor lamination (1), and the curvature of the third shaping structure (91) is smaller than that of the fourth shaping structure (92).
7. The rotor lamination structure of claim 1, wherein: The stator (2) comprises an iron core (201), and the outer side of the rotor lamination (1) is provided with the iron core (201).
8. The rotor lamination structure of claim 7, wherein: The stator (2) further comprises a heat dissipation groove (203) and a copper wire (202), the inner wall of the iron core (201) is provided with a plurality of heat dissipation grooves (203) arranged in a ring array at equal intervals, and the inner sides of the plurality of heat dissipation grooves (203) are provided with the copper wire (202) fixed with the iron core (201).