Stator core module, insulation skeleton module, stator, motor and compressor

Abstract

The present disclosure relates to a kind of stator core module, insulating framework module, stator, motor and compressor, the stator core module includes first lamination and two second laminations stacked along the axial direction, two second laminations are located at the opposite sides of first lamination respectively;First lamination includes first tooth portion, second lamination includes second tooth portion, the width of first tooth portion is less than the width of second tooth portion, two second tooth portion and first tooth portion form tooth portion slot enclosed.This technical solution of the present disclosure effectively solves the technical problems of low efficiency and high noise during operation of traditional motor.

Description

Technical Field

[0001] This disclosure relates to the field of motor technology, and in particular to a stator core module, an insulating frame module, a stator, a motor, and a compressor. Background Technology

[0002] In traditional technology, the stator is the stationary part of the motor. The stator generally consists of three parts: the stator core, the stator windings, and the frame. The stator windings are wound around the stator core to create a rotating magnetic field that drives the rotor. The stator core is typically made of stacked stator laminations. The stator laminations include teeth and a yoke, and the stator windings are generally wound around the teeth of the stator laminations.

[0003] In related technologies, the rotor core of an electric motor is usually higher than the stator core. When the motor rotor uses a material with low residual magnetism as the pole material, the stator core is greatly affected by the end magnetic field and less affected by the magnetic flux density in the middle, resulting in uneven magnetic flux density distribution in the stator teeth. This leads to problems such as low motor efficiency and high noise. Summary of the Invention

[0004] This disclosure provides a stator core module, an insulating frame module, a stator, a motor, and a compressor to solve the technical problems of low working efficiency and high noise during operation of traditional motors.

[0005] To this end, in a first aspect, this disclosure provides a stator core module, including a first lamination and two second laminations stacked along the axial direction, the two second laminations being located on opposite sides of the first lamination; the first lamination includes a first tooth portion, the second lamination includes a second tooth portion, the width of the first tooth portion is smaller than the width of the second tooth portion, and the two second tooth portions and the first tooth portion surround each other to form a tooth groove.

[0006] In one possible implementation, the width of the first tooth is W1, and the width of the second tooth is W2, wherein 0.7 ≤ W1 / W2 ≤ 0.9.

[0007] In one possible implementation, the height of the first tooth is H1, and the height of the stator core module is H, where 0.1≤H1 / H≤0.3.

[0008] In one possible implementation, the width difference between the second tooth and the first tooth is W3, and the height difference between the stator core module and the first tooth is H2, wherein 14≤H2 / W3≤21.

[0009] In one possible implementation, the cross-sectional shape of the toothed slot in the radial direction of the stator core module is any one of rectangular, triangular, prismatic, polygonal, hemispherical, arc-shaped, and curved.

[0010] In one possible implementation, the first lamination further includes a first yoke connected to the outside of the first tooth, and the second lamination further includes a second yoke connected to the outside of the second tooth, wherein the width of the first yoke is smaller than the width of the second yoke.

[0011] Secondly, this disclosure also provides an insulating frame module that cooperates with the stator core module described above. The insulating frame module includes a first insulating frame, a second insulating frame, and a connector. The connector is connected to one end of the first insulating frame near the second insulating frame and is used to cover the tooth groove of the stator core module.

[0012] In one possible implementation, the thickness of the connector is W4 and the height of the connector is H4, where 7≤H4 / W4≤11.

[0013] In one possible implementation, the first insulating frame includes a first frame base and two first U-shaped groove arms arranged opposite to each other, the two first U-shaped groove arms being respectively connected to opposite sides of the first frame base; the second insulating frame includes a second frame base and two second U-shaped groove arms arranged opposite to each other, the two second U-shaped groove arms being respectively connected to opposite sides of the second frame base.

[0014] The connector includes a connecting part and an abutting part. The connecting part is connected to the inner side of the first U-shaped groove arm, and the abutting part is exposed outside the first U-shaped groove arm. The end of the second U-shaped groove arm away from the second frame seat abuts against the outer side of the abutting part.

[0015] Thirdly, this disclosure also provides a stator, including a plurality of stator core modules continuously distributed along the circumferential direction and an insulating frame module cooperating with each stator core module, wherein the stator core module is the stator core module as described above; and the insulating frame module is the insulating frame module as described above.

[0016] Fourthly, this disclosure also provides an electric motor, including a rotor and a stator as described above, wherein the rotor core height is H3 and the stator core module height is H4, wherein 5mm≤(H3-H4)≤15mm.

[0017] Fifthly, this disclosure also provides a compressor, including the motor described above.

[0018] According to the stator core module, insulating frame module, stator, motor, and compressor provided in this disclosure, the stator core module includes a first lamination and two second laminations stacked together, with the two second laminations located on opposite sides of the first lamination. The first lamination includes a first tooth, and the second lamination includes a second tooth. The width of the first tooth is smaller than the width of the second tooth, and the two second teeth and the first tooth together form a tooth groove. This technical solution optimizes the magnetic flux density distribution along the axial direction of the stator core module to improve the problem of uneven magnetic flux density distribution in the tooth region of the stator core module. Specifically, the stator core module is configured as a combination of at least two second laminations and a first lamination. The two second laminations are stacked axially on opposite sides of the first lamination to form a sandwich structure. Furthermore, the first tooth of the first lamination is stacked corresponding to the second tooth of the second lamination to form the toothed region of the stator core module. The width of the first tooth is smaller than the width of the second tooth, thus forming a concave toothed groove in the axial direction of the stator core module. This toothed groove causes the cross-sectional area of ​​the toothed region along the axial direction of the stator core module to exhibit a distribution trend of being smaller in the middle and larger at both ends. Simultaneously, the size and shape of the cross-sectional area of ​​the toothed region along the radial direction of the stator core module remain unchanged. This effectively improves the uniformity of magnetic flux density distribution in the axial direction of the stator core module, increases the magnetic flux density value and the utilization rate of the magnet material, improves the operating efficiency of the motor, and reduces the noise of the motor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort. In addition, in the drawings, the same parts use the same reference numerals, and the drawings are not drawn to scale.

[0020] Figure 1 A three-dimensional structural schematic diagram of the stator core module provided in the first embodiment of this disclosure;

[0021] Figure 2 for Figure 1 Top view;

[0022] Figure 3 A top view of the second lamination provided in an embodiment of this disclosure;

[0023] Figure 4 A top view of the first lamination provided in an embodiment of this disclosure;

[0024] Figure 5 A diagram showing the axial height magnetic flux density variation of the first tooth under the fixed stack height provided in this disclosure;

[0025] Figure 6 A comparison diagram of the magnetic flux density of the stator core module provided in this disclosure before and after the narrowing of the tooth region;

[0026] Figure 7 A three-dimensional structural schematic diagram of the stator core module provided in the second embodiment of this disclosure;

[0027] Figure 8 for Figure 7 A cross-sectional view of the teeth;

[0028] Figure 9 A three-dimensional structural schematic diagram of the stator core module provided in the third embodiment of this disclosure;

[0029] Figure 10 for Figure 9 Top view;

[0030] Figure 11 An exploded view of the insulating frame module provided in the embodiments of this disclosure;

[0031] Figure 12 A three-dimensional structural diagram of the first insulating frame and connector provided in the embodiments of this disclosure;

[0032] Figure 13 for Figure 12 Rear view;

[0033] Figure 14 for Figure 13 Enlarged view of section A in the middle;

[0034] Figure 15 This is a three-dimensional structural diagram of the second insulating frame provided in an embodiment of the present disclosure;

[0035] Figure 16 A partial exploded view of the stator provided in an embodiment of this disclosure;

[0036] Figure 17 for Figure 16 The main view;

[0037] Figure 18 A top view of the stator provided in an embodiment of this disclosure;

[0038] Figure 19 A comparison chart of motor efficiency between the electric motor and a conventional electric motor provided in the embodiments of this disclosure;

[0039] Figure 20 A comparison diagram of the effective slot area of ​​a motor and the effective slot area of ​​a conventional motor provided in this embodiment of the present disclosure;

[0040] Figure 21 A comparison diagram of the volume of the stator core module provided in this embodiment and the volume of a conventional stator core module.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10. Stator core module; 101. Toothed slot; 102. Through slot structure;

[0043] 100. First lamination; 110. First tooth; 120. First yoke; 130. First boot section;

[0044] 200, Second lamination; 210, Second tooth; 220, Second yoke; 230, Second boot section;

[0045] 20. Insulating frame module;

[0046] 300, First insulating frame; 310, First frame seat; 320, First U-shaped groove arm;

[0047] 400, Second insulating frame; 410, Second frame seat; 420, Second U-shaped groove arm;

[0048] 500. Connector; 510. Connecting part; 520. Abutting part;

[0049] 30. Stator. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0051] See Figures 1 to 10 This disclosure provides a stator core module, including a first lamination 100 and two second laminations 200 stacked along the axial direction, the two second laminations 200 being located on opposite sides of the first lamination 100; the first lamination 100 includes a first tooth 110, the second lamination 200 includes a second tooth 210, the width of the first tooth 110 is smaller than the width of the second tooth 210, and the two second teeth 210 and the first tooth 110 surround each other to form a tooth groove 101.

[0052] In this embodiment, the uneven magnetic flux density distribution in the tooth region of the stator core module 10 is improved by optimizing the magnetic flux density distribution along its axial direction. Specifically, the core module is configured as a combined component comprising at least two second laminations 200 and a first lamination 100, with the two second laminations 200 stacked axially on opposite sides of the first lamination 100 to form a sandwich structure. Furthermore, the first tooth 110 of the first lamination 100 is stacked with the second tooth 210 of the second lamination 200 to form the tooth region of the stator core module 10. The width of the first tooth 110 is smaller than the width of the second tooth 210, thus forming a concave tooth groove 101 in the axial direction of the stator core module 10. This tooth groove 101 causes the cross-sectional area of ​​the tooth region along the axial direction of the stator core module 10 to exhibit a distribution trend of being smaller in the middle and larger at both ends. Simultaneously, it keeps the size and shape of the cross-sectional area of ​​the tooth region along the radial direction of the stator core module 10 unchanged. This effectively improves the uniformity of the magnetic flux density distribution of the stator core module 10 in the axial direction, increases the magnetic flux density value of the stator core module 10 and the utilization rate of the magnet material, improves the working efficiency of the motor, and reduces the noise of the motor. At the same time, setting the tooth groove 101 in the tooth region of the stator core module 10 also reduces the material used in the tooth region of the stator core module 10, lowering the manufacturing cost of the motor.

[0053] Furthermore, the toothed groove 101 is located in the axial middle region of the stator core module 10, providing a certain assembly space for the assembly of the insulation frame module 20. Thus, on the one hand, by setting the toothed groove 101, the thickness of the insulation frame module 20 can be effectively reduced, and the effective slot area of ​​the motor can be greatly increased; on the other hand, by setting the toothed groove 101, the assembly stability and processing reliability between the stator core module 10 and the insulation frame module 20 can be greatly improved.

[0054] See Figure 2 In one possible implementation, the width of the first tooth 110 is W1, and the width of the second tooth 210 is W2, wherein 0.7 ≤ W1 / W2 ≤ 0.9.

[0055] In this embodiment, the widths of the first tooth 110 and the second tooth 210 are optimized. Specifically, the width ratio of the first tooth 110 and the second tooth 210 is configured to be 0.7 ≤ W1 / W2 ≤ 0.9. This improves the uniformity of magnetic flux density distribution in the tooth region of the stator core module 10 by reasonably reducing the tooth width at the axial center position. See also... Figure 5Based on the comparison of the magnetic flux density of the teeth before and after the narrowing of the tooth region of the stator core module 10, it can be seen that the magnetic flux density of the teeth at the same stack height increases as the width decreases. Therefore, in this embodiment, the width ratio of the first tooth 110 and the second tooth 210 is limited to the range of 0.7≤W1 / W2≤0.9, so that the magnetic flux density of the first tooth 110 is close to the magnetic flux density value corresponding to the knee point of the stator core module 10 material, which effectively improves the utilization rate of the stator core module 10 material.

[0056] Furthermore, the thickness of the inwardly recessed tooth groove 101 formed by the two second teeth 210 and the first tooth 110 can provide a certain assembly space for the mating of the insulating frame module 20, making the transition at the joint between the insulating frame module 20 and the stator core module 10 smoother and improving the assembly stability of the stator core module 10 and the insulating frame module 20; at the same time, the inwardly recessed tooth groove 101 structure can also reasonably increase the effective slot area of ​​the motor and improve the winding efficiency of the stator 30.

[0057] In one example, the ratio of the width of the first tooth 110 to the width of the second tooth 210 is 0.78 ≤ W1 / W2 ≤ 0.84.

[0058] See Figure 2 In one possible implementation, the height of the first tooth 110 is H1, and the height of the stator core module 10 is H, wherein 0.1≤H1 / H≤0.3.

[0059] In this embodiment, the heights of the first tooth 110 and the second tooth 210 are optimized. Specifically, the height ratio of the first tooth 110 to the stator core module 10 is configured to 0.1 ≤ H1 / H ≤ 0.3. This improves the uniformity of magnetic flux density distribution in the axial direction of the tooth region of the stator core module 10 by rationally arranging the height range of the first tooth 110 and the second tooth 210 within the axial direction of the stator core module 10. See also... Figure 6 Based on the comparison of the magnetic flux density of the tooth region of the stator core module 10 under a fixed stack height, it can be seen that the magnetic flux density values ​​at both ends of the tooth region of the stator core module 10 are higher than those in the middle. Therefore, in this embodiment, the height ratio of the first tooth 110 and the stator core module 10 is limited to the range of 0.1 ≤ H1 / H ≤ 0.3, and the position of the first tooth 110 is symmetrical about the center line of the motor axis, so that the magnetic flux density value of the formed first tooth 110 does not exceed the magnetic flux density value corresponding to the knee point, thereby improving the utilization rate of the stator core module 10 material. In this way, the magnetic flux density value of the tooth region of the stator core module 10 at the first tooth 110 is effectively improved, making the overall magnetic flux density value of the tooth region of the stator core module 10 more uniform in the axial direction.

[0060] In addition, limiting the height of the first tooth 110 to a reasonable height range can effectively avoid problems such as poor assembly stability of the insulating frame module 20 and the stator core module 10 caused by the first tooth 110 being too small, or difficulties in processing and manufacturing the insulating frame module 20 caused by the first tooth 110 being too large.

[0061] In one example, the ratio of the height of the first tooth 110 to the height of the stator core module 10 is 0.18 ≤ H1 / H ≤ 0.28.

[0062] In one possible implementation, the width difference between the second tooth 210 and the first tooth 110 is W3, and the height difference between the stator core module 10 and the first tooth 110 is H2, wherein 14≤H2 / W3≤21.

[0063] In this embodiment, the thickness and height of the tooth groove 101 are optimized. Specifically, the ratio of the height difference between the stator core module 10 and the first tooth 110 to the width difference between the first tooth 110 and the second tooth 210 is configured as 14≤H2 / W3≤21. This creates a constraint on the height and thickness of the tooth groove 101, preventing poor structural strength and assembly stability of the insulation frame module 20 when the thickness of the tooth groove 101 is small, which would otherwise result in high processing difficulty, long processing time, and low processing efficiency for the insulation frame module 20.

[0064] In one example, the ratio of the height difference between the first tooth 110 and the second tooth 210 to the width difference between the stator core module 10 and the first tooth 110 is 14.84 ≤ H2 / W3 ≤ 20.13.

[0065] See Figure 7 and Figure 8 In one possible implementation, the cross-sectional shape of the tooth groove 101 in the radial direction of the stator core module 10 is any one of rectangular, triangular, prismatic, polygonal, hemispherical, arc-shaped and curved.

[0066] In this embodiment, the shape of the tooth groove 101 is optimized. Specifically, the cross-sectional shape of the tooth groove 101 can be arbitrary, as long as the tooth groove 101 can make the width of the middle tooth of the first tooth 110 less than or equal to the width of the two ends of the first tooth 110.

[0067] In a specific example, the cross-sectional shape of the tooth groove 101 is configured as an arc, so that the change of the first tooth 110 in the axial direction is linear, so that the tooth width at the center position of the first tooth 110 in the axial direction is the narrowest and smallest, and the tooth width at both ends is larger than the tooth width at the center position of the first tooth 110, but smaller than the tooth width of the second tooth 210, thereby making the magnetic flux density distribution of the first tooth 110 in the axial direction more uniform and reasonable.

[0068] See Figure 9 and Figure 10 In one possible implementation, the first lamination 100 further includes a first yoke 120 connected to the outside of the first tooth 110, and the second lamination 200 further includes a second yoke 220 connected to the outside of the second tooth 210, wherein the width of the first yoke 120 is smaller than the width of the second yoke 220.

[0069] In this embodiment, to further reduce the material usage of the stator core module 10 and save costs, the specific structure of the first lamination 100 is optimized. Specifically, the width of the first yoke portion 120 of the first lamination 100 is set to be smaller than that of the second yoke portion 220 of the second lamination 200, thus forming a yoke groove in the axial direction. This yoke groove communicates with the tooth groove 101 to form a through-slot structure 102. This through-slot structure 102 can provide a certain assembly space for the assembly of the insulation frame module 20, making the transition at the joint between the insulation frame module 20 and the stator core module 10 smoother, thereby improving the assembly stability of the stator core module 10 and the insulation frame module 20. At the same time, the inwardly recessed through-slot structure 102 can also reasonably increase the effective slot area of ​​the motor and improve the winding efficiency of the stator 30.

[0070] In one possible implementation, the first punch 100 further includes a first boot portion 130 connected to the inner side of the first tooth portion 110, and the second punch 200 further includes a second boot portion 230 connected to the inner side of the second tooth portion 210, wherein the width of the first boot portion 130 is smaller than the width of the second boot portion 230.

[0071] In this embodiment, the first lamination 100 includes a first boot portion 130, a first tooth portion 110, and a first yoke portion 120 connected in sequence, and the second lamination 200 includes a second boot portion 230, a second tooth portion 210, and a second yoke portion 220 connected in sequence. The widths of the first boot portion 130, the first tooth portion 110, and the first yoke portion 120 are smaller than the widths of the second boot portion 230, the second tooth portion 210, and the second yoke portion 220, respectively. In this way, a through slot is formed in the axial direction for the boot portion slot, the tooth portion slot 101, and the yoke portion slot. This through slot greatly increases the effective slot area of ​​the motor, improves the winding efficiency of the stator 30, and reduces the material cost of the stator core module 10.

[0072] See Figures 11 to 15 Secondly, this disclosure also provides an insulating frame module that cooperates with the stator core module 10 as described above. The insulating frame module 20 includes a first insulating frame 300, a second insulating frame 400, and a connector 500. The connector 500 is connected to one end of the first insulating frame 300 near the second insulating frame 400. The connector 500 is used to cover the toothed groove 101 of the stator core module 10.

[0073] In this embodiment, the specific structure of the insulating frame module 20 is optimized to improve the assembly method between the insulating frame module 20 and the stator core module 10. Specifically, the insulating frame module 20 is configured as a combination component including at least a first insulating frame 300, a second insulating frame 400, and a connector 500. The connector 500 is connected to the first insulating frame 300 and is located inside the first insulating frame 300, so as to have a thickness protruding toward the tooth region of the stator core module 10 in the tangential direction.

[0074] When the insulating frame module 20 is assembled onto the stator core module 10, the first insulating frame 300 is fitted onto the outer side of one of the second laminations 200 and half of the first lamination 100 of the stator core module 10. At this time, the side of the connector 500 away from the first insulating frame 300 abuts against the bottom of the toothed groove 101, and the connector 500 fills the toothed groove 101. The second insulating frame 400 is fitted onto the outer side of the other second lamination 200 and the other half of the first lamination 100 of the stator core module 10, and the end of the second insulating frame 400 abuts against the end of the first insulating frame 300, and the inner side of the second insulating frame 400 abuts against the outer side of the connector 500. This improves the assembly stability and convenience of the insulating frame module 20 and the stator core module 10.

[0075] See Figure 12 and Figure 13 In one possible implementation, the thickness of the connector 500 is W4, and the height of the connector 500 is H4, wherein 7≤H4 / W4≤11.

[0076] In this embodiment, the height and thickness of the connector 500 are optimized. Specifically, the ratio between the height and thickness of the connector 500 is configured as 7≤H4 / W4≤11. This creates a constraint on the height and thickness of the connector 500, preventing it from failing to fill the toothed slot 101 when the thickness and height are both small. This would result in poor structural strength of the insulating frame module 20 and poor assembly stability between the insulating frame module 20 and the stator core module 10. Furthermore, it prevents the connector 500 from being unable to be contained in the toothed slot 101 and exposing the second tooth 210 of the stator core module 10 when the thickness and height are both large. This would result in poor assembly performance between the insulating frame modules 20 and a reduction in the effective slot area of ​​the motor.

[0077] In one example, the ratio of the height to the thickness of connector 500 is 7.42 ≤ H4 / W4 ≤ 10.065.

[0078] See Figure 11 and Figure 13 In one possible implementation, the first insulating frame 300 includes a first frame seat 310 and two first U-shaped groove arms 320 arranged opposite to each other, the two first U-shaped groove arms 320 being respectively connected to opposite sides of the first frame seat 310; the second insulating frame 400 includes a second frame seat 410 and two second U-shaped groove arms 420 arranged opposite to each other, the two second U-shaped groove arms 420 being respectively connected to opposite sides of the second frame seat 410.

[0079] The connector 500 includes a connecting part 510 and an abutting part 520. The connecting part 510 is connected to the inner side of the first U-shaped groove arm 320, and the abutting part 520 is exposed outside the first U-shaped groove arm 320. The end of the second U-shaped groove arm 420 away from the second skeleton seat 410 abuts against the outer side of the abutting part 520.

[0080] In this embodiment, the specific structures of the first frame seat 310 and the second frame seat 410 are optimized to optimize the assembly method of the insulating frame module 20 and the stator core module 10. Specifically, the first insulating frame 300 is configured as a combination of at least a first frame seat 310 and two first U-shaped slot arms 320, with the two first U-shaped slot arms 320 respectively connected to opposite sides of the first frame seat 310, so that one of the first U-shaped slot arms 320 of the first insulating frame 300 and one of the first U-shaped slot arms 320 of another adjacent first insulating frame 300 can enclose and form part of the effective slot of the motor; at the same time, the second insulating frame 400 is configured as a combination of at least a second frame seat 410 and two second U-shaped slot arms 420, with the two second U-shaped slot arms 420 respectively connected to opposite sides of the second frame seat 410, so that one of the second U-shaped slot arms 420 of the second insulating frame 400 and one of the second U-shaped slot arms 420 of another adjacent second insulating frame 400 can enclose and form another part of the effective slot of the motor. The portion formed by the two adjacent first U-shaped slot arms 320 and the two adjacent second U-shaped slot arms 420 is one of the effective slots of the motor.

[0081] Furthermore, the connector 500 is configured as a composite member including at least a connecting portion 510 and an abutting portion 520, wherein the connecting portion 510 is used to connect to the first frame seat 310 to achieve a connection and fastening between the connector 500 and the first insulating frame 300. When the second insulating frame 400 is assembled onto the stator core module 10, the inner wall of the second U-shaped groove arm 420 abuts against the outer wall of the abutment portion 520, providing a horizontal pushing force to the connector 500 and completely pressing the connector 500 into the toothed groove 101. This makes the second insulating frame 400 and the connector 500 firmly connected in the horizontal direction and not easy to fall off, improving the assembly tightness of the first insulating frame 300 and the second insulating frame 400 in the horizontal direction (perpendicular to the axial direction of the stator core module 10). At the same time, the connector 500 is completely pressed into the toothed groove 101, making the first insulating frame 300 and the second insulating frame 400 not easy to fall off in the axial direction, improving the assembly stability of the insulating frame module 20 and the stator core module 10.

[0082] See Figures 16 to 18 Thirdly, this disclosure also provides a stator 30, including a plurality of stator core modules 10 continuously distributed along the circumferential direction and an insulating frame module 20 cooperating with each stator core module 10, wherein the stator core module 10 is the stator core module 10 as described above; and the insulating frame module 20 is the insulating frame module 20 as described above.

[0083] In this embodiment, a modular stator core module 10 and insulating frame module 20 are designed to improve the assembly efficiency and production efficiency of the stator 30 and reduce the production difficulty of the stator 30. Specifically, the stator core module 10 is configured as a combination structure with adjustable magnetic flux density in the axial direction of the tooth region of the stator core module 10. The insulating frame module 20 is configured as a combination component with a connector 500, and the connector 500 cooperates with the tooth slot 101 of the stator core module 10, so that the magnetic flux density in the axial direction of the tooth region of the stator core module 10 is uniform, while effectively reducing the thickness of the insulating frame module 20, increasing the effective slot area of ​​the motor, and significantly improving the motor efficiency.

[0084] Furthermore, the stator core module 10 and the insulation frame module 20 of the stator 30 provided in this embodiment can be assembled to form an independent stator 30 module, which can be wound separately (at this time, the material and wire diameter of the winding are not limited). Compared with the traditional integral stator 30, it effectively reduces the damage to the insulation structure caused by the winding machine, simplifies the winding path, reduces the winding difficulty, and improves production efficiency.

[0085] Of course, the specific structure of the stator core module 10 and the insulation frame module 20 is as described in the above embodiments. Since the stator 30 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0086] In one example, adjacent stator core modules 10 can be connected via snap-fit ​​or slot-like mechanisms, see details below. Figure 18 Alternatively, adjacent stator core modules 10 can be assembled and then connected by welding. This example is not limited to the connection method between adjacent stator core modules 10.

[0087] In a specific example, refer to Figures 19 to 21 As can be seen, compared with the traditional stator core module 10 without toothed slots 101, the motor provided in this example, which has a stator core module 10 with toothed slots 101 formed by two second laminations 200 and one first lamination 100, and is assembled with the insulating skeleton module 20 with connectors 500 to form a stator 30, has a motor efficiency change of no more than 0.02%, and the motor efficiency is hardly affected; while the effective slot area of ​​the motor increases by 8.83%, and the toothed area volume of the narrowed stator core module 10 is reduced, and the corresponding cost of the toothed area of ​​the stator core module 10 is reduced by about 16.14%.

[0088] Fourthly, this disclosure also provides an electric motor, including a rotor and a stator 30 as described above. The rotor core height is H3, and the stator core module 10 height of the stator 30 is H4, wherein 5mm ≤ (H3-H4) ≤ 15mm. The specific structure of the stator 30 is as described in the above embodiments. Since this motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0089] In this embodiment, the rotor assembly is rotatably connected to the outer periphery of the stator 30 to form an outer rotor motor. Alternatively, the rotor assembly can also be rotatably connected to the inner side of the stator 30 to form an inner rotor motor.

[0090] Furthermore, the height difference between the stator core module 10 and the rotor is configured to be 5mm≤(H3-H4)≤15mm to optimize the height difference between the rotor core and the stator core module, thereby improving the uneven magnetic flux distribution of the stator core module 10 in the axial direction.

[0091] Fifthly, this disclosure also provides a compressor, including the motor described above. The specific structure of the motor is as described in the above embodiments. Since this compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An insulation skeleton module for cooperating with a stator core module, the stator core module comprising a first lamination and two second laminations arranged in an axial stack, the two second laminations being respectively located on opposite sides of the first lamination; the first lamination comprising a first tooth portion, the second laminations comprising second tooth portions, the width of the first tooth portion being less than the width of the second tooth portions, the two second tooth portions and the first tooth portion enclosing a tooth portion slot; characterized in that, The insulation skeleton module comprises a first insulation skeleton, a second insulation skeleton and a connecting piece, the connecting piece is connected to one end of the first insulation skeleton close to the second insulation skeleton, and the connecting piece is used for covering the tooth slot of the stator core module; the connecting piece is located on the inner side of the first insulation skeleton, the side of the connecting piece away from the first insulation skeleton abuts to the bottom of the tooth slot, and the connecting piece fills the tooth slot; the end of the second insulation skeleton abuts to the end of the first insulation skeleton, and the inner side of the second insulation skeleton abuts to the outer side of the connecting piece.

2. The insulated backbone module of claim 1, wherein, The thickness of the connecting piece is W4, and the height of the connecting piece is H4, wherein 7≤H4 / W4≤11.

3. The insulated backbone module of claim 1, wherein, The first insulation skeleton comprises a first skeleton seat and two first U-shaped groove arms arranged backward, and the two first U-shaped groove arms are connected to the opposite sides of the first skeleton seat respectively; the second insulation skeleton comprises a second skeleton seat and two second U-shaped groove arms arranged backward, and the two second U-shaped groove arms are connected to the opposite sides of the second skeleton seat respectively. The connecting piece comprises a connecting part and an abutting part, the connecting part is connected to the inner side of the first U-shaped groove arm, and the abutting part exposes the first U-shaped groove arm; and the end of the second U-shaped groove arm away from the second skeleton seat abuts to the outer side of the abutting part.

4. A stator core module for cooperation with the insulation frame module according to any one of claims 1 to 3, characterized in that The width of the first tooth part is W1, and the width of the second tooth part is W2, wherein 0.7≤W1 / W2≤0.

9.

5. The stator core module of claim 4, characterized in that The height of the first tooth part is H1, and the height of the stator core module is H, wherein 0.1≤H1 / H≤0.

3.

6. The stator core module of claim 5, characterized in that The width difference between the second tooth part and the first tooth part is W3, and the height difference between the stator core module and the first tooth part is H2, wherein 14≤H2 / W3≤21.

7. The stator core module of any of claims 4 to 6, characterized in that In the radial direction of the stator core module, the cross-sectional shape of the tooth slot is any one of a rectangle, a triangle, a prismatic shape, a polygon, a semispherical shape, an arc shape and a curved shape.

8. The stator core module of any of claims 4 to 6, characterized in that The first punching sheet further comprises a first yoke part connected to the outer side of the first tooth part, the second punching sheet further comprises a second yoke part connected to the outer side of the second tooth part, and the width of the first yoke part is smaller than the width of the second yoke part.

9. A stator characterized by, The motor comprises a plurality of stator core modules continuously distributed in the circumferential direction and insulation skeleton modules matched with each stator core module, wherein the stator core module is the stator core module as claimed in any one of claims 4 to 8, and the insulation skeleton module is the insulation skeleton module as claimed in any one of claims 1 to 3.

10. An electric machine characterized by The motor comprises a rotor and a stator as claimed in claim 9, the rotor core height of the rotor is H3, the height of the stator core module of the stator is H4, and 5mm≤(H3-H4)≤15mm.

11. A compressor characterized by, The motor comprises the motor as claimed in claim 10.

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