Stator core, motor, compressor, thermal management system and vehicle

Abstract

The utility model discloses a stator core, a motor, a compressor, a thermal management system and a vehicle, the stator core comprises a stator main body and a plurality of tooth parts, the stator main body is annular, the plurality of tooth parts are arranged on the inner circumferential wall of the stator main body at intervals along the circumferential direction and are arranged in an inward protruding manner, and the tooth parts are arranged on the inner circumferential wall of the stator main body. A winding groove is defined between every two adjacent tooth parts; the plurality of tooth parts comprise fixed teeth and split teeth, the fixed teeth and the stator main body are integrally formed, the split teeth and the stator main body are separately formed, and the split teeth are fixed to the stator main body. According to the stator core provided by the embodiment of the utility model, the fixed teeth and the stator main body are integrally formed, and the split teeth are fixed to the stator main body after being independently formed, so that a larger winding space can be reserved for a copper wire, the winding difficulty of the copper wire can be reduced, the slot fullness rate of a winding slot is improved, the assembly difficulty is lower, and the assembly efficiency is improved. The practicability of the stator core can be improved.

Description

Technical Field

[0001] The utility model relates to the field of compressors, in particular to a stator core, a motor, a compressor, a thermal management system and a vehicle. Background Art

[0002] In the prior art, the motor includes a stator and a mover, and the stator is wound with a winding coil. During the processing of the winding coil, due to the size limitation of the winding slot, the winding process of the copper wire is limited, resulting in a low slot fill rate of the winding slot, affecting the performance of the motor. However, if the stator core is assembled from block cores with winding coils wound separately, the assembly of the stator core will be too complicated. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a stator core that can reserve a large winding space for the copper wire, which is conducive to reducing the winding difficulty of the copper wire, improving the slot fill rate of the winding slot, and has a low assembly difficulty, which can improve the practicality of the stator core.

[0004] According to the stator core of the embodiment of the utility model, it includes: a stator body and a plurality of tooth portions, the stator body is constructed in a ring shape, the plurality of tooth portions are arranged on the inner circumferential wall of the stator body at intervals along the circumferential direction and protrude inwardly, and a winding groove is defined between two adjacent tooth portions; the plurality of tooth portions include fixed teeth and split teeth, the fixed teeth are integrally formed with the stator body, the split teeth and the stator body are separately formed and the split teeth are fixed to the stator body.

[0005] According to the stator core of the embodiment of the utility model, by arranging fixed teeth to be integrally formed with the stator body, and arranging split teeth to be separately formed and then fixed to the stator body, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, improving the slot fill rate of the winding slot, and the assembly difficulty is low, which can improve the practicality of the stator core.

[0006] According to the stator core of some embodiments of the present invention, the number of the split teeth is multiple; and / or the number of the fixed teeth is multiple.

[0007] According to the stator core of some embodiments of the present invention, there are at most two split teeth between any two adjacent fixed teeth.

[0008] According to the stator core of some embodiments of the present invention, the multiple split teeth and the multiple fixed teeth are staggeredly distributed in the circumferential direction of the stator body.

[0009] According to the stator core of some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the plurality of teeth is d1, and the outer diameter of the stator body is D1, which satisfies: 0.5≤d1 / D1≤0.65.

[0010] According to some embodiments of the stator core of the present invention, the following condition is satisfied: 0.55≤d1 / D1≤0.6.

[0011] According to the stator core of some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the plurality of teeth is d1, and the tooth width of the teeth is w, satisfying: 0.1d1≤w≤0.12d1.

[0012] According to some embodiments of the present invention, the stator core satisfies: 0.105d1≤w≤0.11d1.

[0013] According to the stator core of some embodiments of the utility model, each of the tooth portions includes a main body portion and a protruding portion, the protruding portion is connected to the radial inner end of the main body portion and protrudes from the circumferential sides of the main body portion, and two adjacent tooth portions define a notch of the winding groove through the protruding portion.

[0014] According to the stator core of some embodiments of the present invention, the minimum circumferential width of the slot opening of the winding slot is w0, which satisfies: 0mm<w0≤4mm.

[0015] According to some embodiments of the present invention, the stator core satisfies: 0mm<w0≤1mm.

[0016] According to the stator core of some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the multiple teeth is d1, the minimum spacing between the radial inner ends of two adjacent main bodies is b1, and the minimum spacing between the radial outer ends of two adjacent main bodies is b2, satisfying: 0.1d1≤b1≤0.12d1, 0.22d1≤b2≤0.26d1.

[0017] According to some embodiments of the present invention, the stator core satisfies: 0.14d1≤b1≤0.16d1, 0.23d1≤b2≤0.24d1.

[0018] According to the stator core of some embodiments of the present invention, the minimum radial thickness of the protrusion is h1, which satisfies: 0.5mm≤h1≤1mm.

[0019] According to some embodiments of the present invention, the stator core satisfies: 0.7mm≤h1≤8mm.

[0020] According to the stator core of some embodiments of the present invention, the split teeth are detachable relative to the stator body.

[0021] According to the stator core of some embodiments of the utility model, the inner circumferential wall of the stator body is provided with a first fixing portion, the split teeth are provided with a second fixing portion, one of the first fixing portion and the second fixing portion is a fixing protrusion and the other is a fixing groove, and the fixing protrusion and the fixing groove are plug-fitted.

[0022] According to the stator core of some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the multiple teeth is d1, the circumferential width of the slot opening of the fixed slot is w1, and the circumferential width of the slot bottom of the fixed slot is w2, satisfying: 0.04d1≤w1≤0.06d1, 0.07d1≤w2≤0.09d1.

[0023] According to some embodiments of the present invention, the stator core satisfies: 0.045d1≤w1≤0.055d1, 0.075d1≤w2≤0.085d1.

[0024] According to the stator core of some embodiments of the present invention, the angle between the side wall of the fixing slot and the radial direction of the main body is α1, which satisfies: 30°≤α1≤50°.

[0025] According to some embodiments of the present invention, the stator core satisfies: 35°≤α1≤45°.

[0026] According to the stator core of some embodiments of the present invention, positioning portions protruding outward are provided on both circumferential sides of the split teeth, and the positioning portions are used for positioning and cooperating with the inner circumferential wall of the stator body.

[0027] The utility model also provides a motor.

[0028] The motor according to an embodiment of the utility model comprises the stator core according to any one of the above embodiments.

[0029] The utility model further provides a compressor.

[0030] A compressor according to an embodiment of the utility model includes: a stator core according to any one of the above embodiments; or a motor according to any one of the above embodiments.

[0031] The utility model also proposes a thermal management system.

[0032] A thermal management system according to an embodiment of the utility model includes: a stator core according to any one of the above embodiments; or a motor according to any one of the above embodiments; or a compressor according to any one of the above embodiments.

[0033] The utility model further provides a vehicle.

[0034] A vehicle according to an embodiment of the utility model includes: a stator core according to any one of the above embodiments; or a motor according to any one of the above embodiments; or a compressor according to any one of the above embodiments; or a thermal management system according to any one of the above embodiments.

[0035] The motor, the compressor, the thermal management system, the vehicle and the stator core have the same advantages as those of the prior art, which will not be elaborated here.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is a schematic diagram of a stator core according to an embodiment of the utility model;

[0039] Figure 2 is an exploded view of a portion of a stator core according to an embodiment of the utility model;

[0040] Figure 3 is a top view of a stator core according to an embodiment of the utility model;

[0041] Figure 4 It is a schematic diagram of a split tooth according to an embodiment of the utility model.

[0042] Reference numerals:

[0043] Stator core 100,

[0044] stator body 1, fixing slot 11,

[0045] Tooth portion 2 , fixed tooth 21 , split tooth 22 , main body portion 23 , protruding portion 24 , fixed protrusion 25 , positioning portion 26 , winding groove 3 . DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] Hereinafter, a stator core 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0048] like Figure 1-Figure 4 As shown, the stator core 100 according to the embodiment of the utility model includes: a stator body 1 and a plurality of tooth portions 2, the stator body 1 is constructed in a ring shape, the plurality of tooth portions 2 are circumferentially spaced on the inner circumferential wall of the stator body 1 and protrude inwardly, and a winding groove 3 is defined between two adjacent tooth portions 2; the plurality of tooth portions 2 include fixed teeth 21 and split teeth 22, the fixed teeth 21 are integrally formed with the stator body 1, the split teeth 22 are separately formed from the stator body 1 and the split teeth 22 are fixed to the stator body 1.

[0049] Thus, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, improving the slot fill rate of the winding slot 3, and reducing the difficulty of assembly, which can improve the practicality of the stator core 100.

[0050] First, refer to Figure 1-Figure 2 As shown, the stator core 100 includes a stator body 1 and a tooth portion 2. The stator body 1 is configured in a circular ring shape, and there are a plurality of tooth portions 2. The plurality of tooth portions 2 are arranged at intervals along the circumferential direction on the inner circumferential wall of the stator body 1. The tooth portions 2 are suitable for being arranged to protrude inwardly along the radial direction of the stator body 1. A winding groove 3 is formed between two adjacent tooth portions 2. The winding groove 3 is used to pass a copper wire so as to wind a winding coil on the tooth portion 2.

[0051] The plurality of teeth 2 include fixed teeth 21 and split teeth 22, the fixed teeth 21 are integrally formed with the stator body 1, the split teeth 22 are separately formed with the stator body 1, and the split teeth 22 can be fixed to the stator body 1 so that the split teeth 22 and the stator body 1 are connected as one. It should be noted that the connection between the split teeth 22 and the stator body 1 can be a snap connection, a screw connection, or a snap connection, as long as the split teeth 22 can be fixed to the stator body 1, and this application does not limit this.

[0052] It should be noted that during the processing of the winding coil, due to the size limitation of the winding slot 3, the winding process of the copper wire is limited, resulting in a low slot fill rate of the winding slot 3, which affects the performance of the motor. However, if the stator core 100 is assembled from block cores with winding coils wound separately, the assembly of the stator core 100 will be too complicated.

[0053] In view of the above problems, in the present application, a part of the tooth portions 2 can be set as split teeth 22, and a part of the tooth portions 2 can be set as fixed teeth 21. For example, multiple tooth portions 2 can be arranged in the order of fixed teeth 21, fixed teeth 21, split teeth 22, and split teeth 22; or, multiple tooth portions 2 can be arranged in the order of fixed teeth 21, fixed teeth 21, split teeth 22, fixed teeth 21, fixed teeth 21, and split teeth 22; or, two opposite tooth portions 2 can be set as fixed teeth 21, and the remaining tooth portions 2 can be set as split teeth 22, and the present application does not limit this.

[0054] In the specific working process, the split teeth 22 are firstly pressed and formed by punching sheets, and the fixed teeth 21 and the stator body 1 are pressed and formed, and then an insulating layer is laid on the fixed teeth 21 and the split teeth 22, and the copper wire is wound on the fixed teeth 21 and the split teeth 22. Since the winding space of the copper wire is increased, the winding process becomes easier, and it is convenient to achieve a higher slot fill rate, such as 80% slot fill rate, and then the split teeth 22 are installed on the stator body 1, so that the stator body 1 and the split teeth 22 are assembled as a whole. In this way, the slot fill rate of the winding slot 3 can be improved, and the overall assembly difficulty of the stator core 100 can be reduced.

[0055] According to the stator core 100 of the embodiment of the utility model, by providing the fixed teeth 21 to be integrally formed with the stator body 1, and providing the split teeth 22 to be separately formed and then fixed to the stator body 1, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, improving the slot fill rate of the winding slot 3, and the assembly difficulty is relatively low, which can improve the practicality of the stator core 100.

[0056] In some embodiments of the present invention, the number of the split teeth 22 can be multiple; and / or the number of the fixed teeth 21 can be multiple. Figure 1 As shown, the number of split teeth 22 can be multiple, and the number of fixed teeth 21 can be multiple, and the multiple split teeth 22 and the multiple fixed teeth 21 can be arranged in a specific order, such as multiple tooth portions 2 can be arranged in the order of fixed teeth 21, fixed teeth 21, split teeth 22, fixed teeth 21, fixed teeth 21, and split teeth 22. Through the above arrangement, while ensuring the slot fill rate of the winding slot 3, the number of split teeth 22 can be reduced, thereby reducing the difficulty of assembling the stator core 100.

[0057] In some embodiments of the present invention, Figure 1 As shown, at most two split teeth 22 may be provided between any two adjacent fixed teeth 21. In other words, one split tooth 22 or two split teeth 22 may be provided between any two adjacent fixed teeth 21. Thus, the number of fixed teeth 21 may be increased as much as possible to reduce the difficulty of assembling the stator core 100.

[0058] In some embodiments of the present invention, Figure 1As shown, a plurality of split teeth 22 and a plurality of fixed teeth 21 may be arranged to be staggered in the circumferential direction of the stator body 1. Specifically, when the number of tooth portions 2 is an even number, the number of split teeth 22 and the number of fixed teeth 21 may be set to be the same, and the plurality of split teeth 22 and the plurality of fixed teeth 21 may be staggered in the circumferential direction of the stator body 1; and when the number of tooth portions 2 is an odd number, the number of split teeth 22 may be set to be one more than the number of fixed teeth 21, and the plurality of tooth portions 2 may be arranged in the order of fixed teeth 21, split teeth 22, split teeth 22, fixed teeth 21, split teeth 22, fixed teeth 21, split teeth 22, or the number of fixed teeth 21 may be set to be one more than the number of split teeth 22, and the plurality of tooth portions 2 may be arranged in the order of split teeth 22, fixed teeth 21, fixed teeth 21, split teeth 22, fixed teeth 21, split teeth 22, and fixed teeth 21. Therefore, the number of the fixed teeth 21 can be increased to the maximum, greatly reducing the difficulty of assembling the stator core 100 .

[0059] In some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the plurality of teeth 2 is d1, and the outer diameter of the stator body 1 is D1, which satisfies: 0.5≤d1 / D1≤0.65.

[0060] For example, refer to Figure 3 As shown, the inner ends of the multiple teeth 2 jointly define the inner circumferential wall of the stator core 100, and the diameter of the inner circle defined by the inner ends of the multiple teeth 2 (i.e., the inner diameter of the stator core 100) can be set to d1, and the outer diameter of the stator body 1 (i.e., the outer diameter of the stator core 100) can be set to D1, satisfying: 0.5≤d1 / D1≤0.65. Specifically, the ratio of the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2 to the outer diameter D1 of the stator body 1 can be 0.55; or, the ratio of the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2 to the outer diameter D1 of the stator body 1 can be 0.6; or, the ratio of the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2 to the outer diameter D1 of the stator body 1 can be 0.64, and this application does not limit this. More preferably, the stator core 100 may be configured to satisfy: 0.55≤d1 / D1≤0.65.

[0061] Through the above arrangement, the stator core 100 can have a suitable thickness, which is beneficial to improving the structural stability of the stator core 100 .

[0062] In some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the plurality of teeth 2 is d1, and the tooth width of the teeth 2 is w, satisfying: 0.1d1≤w≤0.12d1.

[0063] For example, refer to Figure 3As shown, the inner ends of the multiple teeth 2 jointly define the inner circumferential wall of the stator core 100, and the diameter of the inner circle defined by the inner ends of the multiple teeth 2 (i.e., the inner diameter of the stator core 100) can be set to d1, and the tooth width of the tooth 2 can be set to w, satisfying: 0.1d1≤w≤0.12d1. In other words, the tooth width w of the tooth 2 can be set to be greater than or equal to 0.1 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2, and less than or equal to 0.12 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2. Specifically, the tooth width w of the tooth 2 can be taken as 0.105d1, 0.11d1, 0.115d1, etc., and the present application does not impose any restrictions on this. More preferably, the stator core 100 can be set to satisfy: 0.105d1≤w≤0.11d1.

[0064] Through the above arrangement, the tooth portion 2 can have a suitable thickness, which is beneficial to improving the structural stability of the tooth portion 2, and can ensure the proportion of the winding slot 3 in the circumferential direction, thereby reducing the difficulty of manufacturing the winding coil.

[0065] In some embodiments of the present invention, each tooth portion 2 includes a main body portion 23 and a protrusion 24, the protrusion 24 is connected to the radial inner end of the main body portion 23 and protrudes from the circumferential sides of the main body portion 23, and two adjacent tooth portions 2 define a notch of the winding groove 3 through the protrusion 24.

[0066] For example, refer to Figure 2-Figure 4 As shown, each tooth portion 2 includes a main body portion 23 and a protrusion 24, the main body portion 23 is arranged along the radial extension of the stator body 1, the radial outer end of the main body portion 23 (the radial outer end of the main body portion 23 is represented as the radial outer end of the main body portion 23 along the stator body 1) is used to be connected to the inner circumferential wall of the stator body 1, and the radial inner end of the main body portion 23 (the radial outer end of the main body portion 23 is represented as the radial inner end of the main body portion 23 along the stator body 1) is connected with the protrusion 24, and the main body 23 is used for winding the winding coil.

[0067] The protrusions 24 are arranged to extend along the circumference of the stator body 1 and protrude from both sides of the main body 23 in the circumferential direction. The protrusions 24 of two adjacent teeth 2 are arranged opposite to each other in the circumferential direction of the stator body 1, so that the two adjacent teeth 2 can define the notch of the winding slot 3 through the protrusions 24. The protrusions 24 are used to limit the winding coils wound on the main body 23. In this way, the winding coils can be prevented from being separated, which is conducive to improving the reliability of the stator core 100.

[0068] In some embodiments of the present invention, Figure 3As shown, the minimum circumferential width of the notch of the winding slot 3 can be set to w0, satisfying: 0mm<w0≤4mm. Specifically, the minimum circumferential width w0 of the notch of the winding slot 3 can be set to 1mm; or, the minimum circumferential width w0 of the notch of the winding slot 3 can be set to 2mm; or, the minimum circumferential width w0 of the notch of the winding slot 3 can be set to 3mm, and this application does not limit this. More preferably, the stator core 100 can be set to satisfy: 0mm<w0≤1mm.

[0069] It can be understood that since the split teeth 22 are formed separately and then installed on the stator body 1, when the split teeth 22 are provided between two adjacent fixed teeth 21, the circumferential width of the slot is completely unrestricted by the size of the copper wire. Therefore, the circumferential width of the slot can be limited within the above range, which is beneficial to reduce the tooth torque generated by the stator core 100 during operation and improve the performance of the motor.

[0070] In some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the multiple teeth 2 is d1, the minimum spacing between the radial inner ends of two adjacent main bodies 23 is b1, and the minimum spacing between the radial outer ends of two adjacent main bodies 23 is b2, satisfying: 0.1d1≤b1≤0.12d1, 0.22d1≤b2≤0.26d1.

[0071] For example, refer to Figure 3 As shown, the inner ends of the multiple tooth portions 2 jointly define the inner circumferential wall of the stator core 100, and the diameter of the inner circle defined by the inner ends of the multiple tooth portions 2 (i.e., the inner diameter of the stator core 100) can be set to d1, the minimum spacing between the radial inner ends of two adjacent main body portions 23 can be set to b1, and the minimum spacing between the radial outer ends of two adjacent main body portions 23 can be set to b2, satisfying: 0.1d1≤b1≤0.12d1, 0.22d1≤b2≤0.26d1.

[0072] That is to say, the minimum spacing b1 between the radial outer ends of two adjacent main body portions 23 can be set to be greater than or equal to 0.1 times the diameter d1 of the inner circle defined by the inner ends of multiple teeth 2, and less than or equal to 0.12 times the diameter d1 of the inner circle defined by the inner ends of multiple teeth 2, such as 0.105d1, 0.11d1, 0.115d1, etc.

[0073] At the same time, the minimum spacing b1 between the radial outer ends of two adjacent main body portions 23 can be set to be greater than or equal to 0.22 times the diameter d1 of the inner circle defined by the inner ends of multiple teeth 2, and less than or equal to 0.26 times the diameter d1 of the inner circle defined by the inner ends of multiple teeth 2, such as 0.23d1, 0.24d1, 0.25d1, etc.

[0074] More preferably, the stator core 100 may be configured to satisfy: 0.14d1≤b1≤0.16d1, 0.23d1≤b2≤0.24d1.

[0075] Through the above arrangement, the size and shape of the winding slot 3 can be limited to reserve enough space for the copper wire, thereby improving the design rationality of the stator core 100.

[0076] In some embodiments of the present invention, referring to Figure 3 As shown, the minimum radial thickness of the protrusion 24 can be set to h1, satisfying: 0.5mm≤h1≤1mm. Specifically, the minimum radial thickness h1 of the protrusion 24 can be set to 0.6mm; or the minimum radial thickness h1 of the protrusion 24 can be set to 0.75mm; or the minimum radial thickness h1 of the protrusion 24 can be set to 0.9mm, and this application does not limit this. More preferably, the stator core 100 can be set to satisfy: 0.7mm≤h1≤0.8mm.

[0077] Through the above arrangement, the structural stability of the protrusion 24 can be ensured, which is conducive to improving the limiting effect of the protrusion 24 on the winding coil, and can avoid the protrusion 24 being too large to affect the winding amount of the winding coil.

[0078] In some embodiments of the present invention, Figure 2 As shown, the split teeth 22 can be detachable relative to the stator body 1, so that when the winding coil or the split teeth 22 needs to be replaced, the split teeth 22 can be detached from the stator body 1 to complete the convenient replacement. In this way, the practicality of the stator core 100 can be improved.

[0079] In some embodiments of the utility model, the inner circumferential wall of the stator body 1 is provided with a first fixing portion, and the split tooth 22 is provided with a second fixing portion. One of the first fixing portion and the second fixing portion is a fixing protrusion 25 and the other is a fixing groove 11. The fixing protrusion 25 and the fixing groove 11 are plug-fitted.

[0080] That is to say, referring to Figure 1-Figure 2 As shown, a first fixing portion is provided on the inner circumferential wall of the stator body 1, the split tooth 22 extends radially along the stator body 1, and a second fixing portion is provided at the radial outer end of the split tooth 22. One of the first fixing portion and the second fixing portion is a fixing protrusion 25 and the other is a fixing groove 11. For example, a fixing groove 11 is provided on the inner circumferential wall of the stator body 1, and a fixing protrusion 25 is provided at the radial outer end of the split tooth 22. The fixing protrusion 25 is used to be plugged into and matched with the fixing groove 11 to achieve the connection between the split tooth 22 and the stator body 1.

[0081] It should be noted that the fixing protrusion 25 and the fixing groove 11 can be set to be interference fit, and during the installation or removal process of the split tooth 22, the split tooth 22 can be cooled and the fixing groove 11 can be heated to facilitate the fixing protrusion 25 to be installed into or removed from the fixing groove 11. In this way, the difficulty of assembling the stator core 100 can be reduced.

[0082] In some embodiments of the present invention, the diameter of the inner circle defined by the inner ends of the multiple teeth 2 is d1, the circumferential width of the slot mouth of the fixed slot 11 is w1, and the circumferential width of the slot bottom of the fixed slot 11 is w2, satisfying: 0.04d1≤w1≤0.06d1, 0.07d1≤w2≤0.09d1.

[0083] For example, refer to Figure 3 As shown, the inner ends of the multiple tooth portions 2 jointly define the inner circumferential wall of the stator core 100, and the diameter of the inner circle defined by the inner ends of the multiple tooth portions 2 (i.e., the inner diameter of the stator core 100) can be set to d1, the circumferential width of the slot opening of the fixed slot 11 can be set to w1, and the circumferential width of the slot bottom of the fixed slot 11 can be set to w2, satisfying: 0.04d1≤w1≤0.06d1, 0.07d1≤w2≤0.09d1.

[0084] That is, the circumferential width w1 of the notch of the fixing groove 11 can be set to be greater than or equal to 0.04 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2, and less than or equal to 0.06 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2, such as 0.045d1, 0.05d1, 0.55d1, etc. At the same time, the circumferential width w2 of the groove bottom of the fixing groove 11 can be set to be greater than or equal to 0.07 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2, and less than or equal to 0.09 times the diameter d1 of the inner circle defined by the inner ends of the multiple teeth 2, such as 0.075d1, 0.08d1, 0.085d1, etc.

[0085] More preferably, the stator core 100 may be arranged to satisfy: 0.045d1≤w1≤0.055d1, 0.075d1≤w2≤0.085d1.

[0086] Through the above arrangement, the size and shape of the fixing groove 11 can be limited to improve the limiting effect of the fixing groove 11 on the fixing protrusion 25, which is beneficial to improving the installation stability of the split teeth 22 and improving the reliability of the stator core 100.

[0087] In some embodiments of the present invention, Figure 3As shown, the angle between the side wall of the fixed slot 11 and the radial direction of the main body 23 can be set to α1, satisfying: 30°≤α1≤50°. Specifically, the angle α1 between the side wall of the fixed slot 11 and the radial direction of the main body 23 can be set to 35°; or, the angle α1 between the side wall of the fixed slot 11 and the radial direction of the main body 23 can be set to 40°; or, the angle α1 between the side wall of the fixed slot 11 and the radial direction of the main body 23 can be set to 45°, and the present application does not impose any restrictions on this. More preferably, the stator core 100 can be set to satisfy: 35°≤α1≤45°.

[0088] Through the above arrangement, the fixing groove 11 can be constructed into a trapezoidal structure to improve the installation stability between the split teeth 22 and the stator body 1 and help reduce the difficulty of processing the fixing protrusion 25 and the fixing groove 11.

[0089] In some embodiments of the present invention, Figure 2 As shown, outwardly protruding positioning portions 26 may be provided on both circumferential sides of the split teeth 22, and the positioning portions 26 are used to position and cooperate with the inner circumferential wall of the stator body 1 to achieve positioning between the split teeth 22 and the stator body 1. It should be noted that the positioning portions 26 may be constructed as positioning protrusions, and the positioning protrusions are matched with the inner circumferential wall of the stator body 1, so that the positioning protrusions can be supported on the inner circumferential wall of the stator body 1.

[0090] Through the above arrangement, the installation accuracy of the split tooth 22 can be improved, and when the split tooth 22 is impacted, the positioning portion 26 can share part of the impact force, which is beneficial to reduce the possibility of damage to the split tooth 22 and improve the design rationality of the stator core 100.

[0091] The utility model also provides a motor.

[0092] The motor according to the embodiment of the utility model comprises the stator core 100 according to any one of the above embodiments. It should be noted that the above motor may be a linear motor.

[0093] According to the motor of the embodiment of the utility model, by arranging the fixed teeth 21 to be integrally formed with the stator body 1, and arranging the split teeth 22 to be separately formed and then fixed to the stator body 1, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, and improving the slot fill rate of the winding slot 3. The assembly difficulty is low, which can improve the practicality of the stator core 100 and the reliability of the motor.

[0094] The utility model further provides a compressor.

[0095] The compressor according to the embodiment of the present invention includes: the stator core 100 according to any one of the above embodiments; or, the motor according to any one of the above embodiments.

[0096] According to the compressor of the embodiment of the utility model, by arranging the fixed teeth 21 to be integrally formed with the stator body 1, and arranging the split teeth 22 to be separately formed and then fixed to the stator body 1, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, and improving the slot fill rate of the winding slot 3. The assembly difficulty is low, which can improve the practicality of the stator core 100, improve the reliability of the motor, and improve the overall performance of the compressor.

[0097] The technical solution of the present application adopts a multi-tooth scroll structure, utilizing the characteristics of multiple teeth. Compared with traditional volumetric compressors, engines and other structures, it has fewer moving parts, simpler assembly, less vibration and noise, smaller overall structural dimensions, and a smoother energy conversion process.

[0098] The utility model also proposes a thermal management system.

[0099] The thermal management system according to the embodiment of the utility model includes: the stator core 100 according to any one of the above embodiments; or, the motor according to any one of the above embodiments; or, the compressor according to any one of the above embodiments.

[0100] According to the thermal management system of the embodiment of the utility model, by arranging the fixed teeth 21 to be integrally formed with the stator body 1, and arranging the split teeth 22 to be separately formed and then fixed to the stator body 1, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, and improving the slot fill rate of the winding slot 3. The assembly difficulty is relatively low, which can improve the practicality of the stator core 100, improve the reliability of the motor, improve the overall performance of the compressor, and improve the reliability of the thermal management system.

[0101] The utility model further provides a vehicle.

[0102] The vehicle according to the embodiment of the utility model comprises: the stator core 100 according to any of the above embodiments; or, the motor according to any of the above embodiments; or, the compressor according to any of the above embodiments; or, the thermal management system according to any of the above embodiments. It should be noted that the vehicle can be a fuel vehicle, a hybrid vehicle, or a new energy vehicle, and this application does not limit this.

[0103] According to the vehicle of the embodiment of the utility model, by arranging the fixed teeth 21 to be integrally formed with the stator body 1, and arranging the split teeth 22 to be separately formed and then fixed to the stator body 1, a larger winding space can be reserved for the copper wire, which is beneficial to reducing the difficulty of winding the copper wire, and improving the slot fill rate of the winding slot 3, and the assembly difficulty is relatively low, which can improve the practicality of the stator core 100, improve the reliability of the motor, improve the overall performance of the compressor, improve the reliability of the thermal management system, and improve user satisfaction.

[0104] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0105] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0106] In the description of the present invention, "plurality" means two or more.

[0107] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0108] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stator core (100), characterized in that: include: A stator body (1) and a plurality of teeth (2), the stator body (1) being constructed in an annular shape, the plurality of teeth (2) being arranged at intervals along the circumferential direction on the inner circumferential wall of the stator body (1) and protruding inwardly, and a winding groove (3) being defined between two adjacent teeth (2); The plurality of tooth portions (2) include fixed teeth (21) and split teeth (22); the fixed teeth (21) are integrally formed with the stator body (1); the split teeth (22) are separately formed from the stator body (1) and the split teeth (22) are fixed to the stator body (1).

2. The stator core (100) according to claim 1, characterized in that: The number of the split teeth (22) is multiple; and / or the number of the fixed teeth (21) is multiple.

3. The stator core (100) according to claim 2, characterized in that: There are at most two split teeth (22) between any two adjacent fixed teeth (21).

4. The stator core (100) according to claim 3, characterized in that: The plurality of split teeth (22) and the plurality of fixed teeth (21) are distributed alternately in the circumferential direction of the stator body (1).

5. The stator core (100) according to claim 1, characterized in that: The diameter of the inner circle defined by the inner ends of the plurality of teeth (2) is d1, and the outer diameter of the stator body (1) is D1, satisfying the following: 0.5≤d1 / D1≤0.

65.

6. The stator core (100) according to claim 5, characterized in that: Satisfies: 0.55≤d1 / D1≤0.

6.

7. The stator core (100) according to claim 1, characterized in that: The diameter of the inner circle defined by the inner ends of the plurality of tooth portions (2) is d1, and the tooth width of the tooth portion (2) is w, satisfying: 0.1d1≤w≤0.12d1.

8. The stator core (100) according to claim 7, characterized in that: Satisfies: 0.105d1≤w≤0.11d1.

9. The stator core (100) according to claim 1, characterized in that: Each tooth portion (2) comprises a main body portion (23) and a protruding portion (24); the protruding portion (24) is connected to the radial inner end of the main body portion (23) and protrudes from both circumferential sides of the main body portion (23); two adjacent tooth portions (2) define a notch of the winding groove (3) through the protruding portion (24).

10. The stator core (100) according to claim 9, characterized in that: The minimum circumferential width of the notch of the winding groove (3) is w0, which satisfies: 0mm<w0≤4mm.

11. The stator core (100) according to claim 10, characterized in that: Satisfies: 0mm<w0≤1mm.

12. The stator core (100) according to claim 9, characterized in that: The diameter of the inner circle defined by the inner ends of the plurality of teeth (2) is d1, the minimum spacing between the radial inner ends of two adjacent main bodies (23) is b1, and the minimum spacing between the radial outer ends of two adjacent main bodies (23) is b2, satisfying: 0.1d1≤b1≤0.12d1, 0.22d1≤b2≤0.26d1.

13. The stator core (100) according to claim 12, characterized in that: Satisfies: 0.14d1≤b1≤0.16d1, 0.23d1≤b2≤0.24d1.

14. The stator core (100) according to claim 9, characterized in that: The minimum radial thickness of the protrusion (24) is h1, which satisfies: 0.5 mm ≤ h1 ≤ 1 mm.

15. The stator core (100) according to claim 14, characterized in that: Satisfies: 0.7mm≤h1≤0.8mm.

16. The stator core (100) according to claim 1, characterized in that: The split teeth (22) are detachable relative to the stator body (1).

17. The stator core (100) according to any one of claims 9 to 16, characterized in that: The inner peripheral wall of the stator body (1) is provided with a first fixing portion, and the split teeth (22) are provided with a second fixing portion, one of the first fixing portion and the second fixing portion is a fixing protrusion (25) and the other is a fixing groove (11), and the fixing protrusion (25) and the fixing groove (11) are plug-fitted.

18. The stator core (100) according to claim 17, characterized in that: The diameter of the inner circle defined by the inner ends of the plurality of teeth (2) is d1, the circumferential width of the slot opening of the fixing slot (11) is w1, and the circumferential width of the slot bottom of the fixing slot (11) is w2, satisfying: 0.04d1≤w1≤0.06d1, 0.07d1≤w2≤0.09d1.

19. The stator core (100) according to claim 18, characterized in that: Satisfies: 0.045d1≤w1≤0.055d1, 0.075d1≤w2≤0.085d1.

20. The stator core (100) according to claim 17, characterized in that: The included angle between the side wall of the fixing groove (11) and the radial direction of the main body (23) is α1, which satisfies: 30°≤α1≤50°.

21. The stator core (100) according to claim 20, characterized in that: Satisfies: 35°≤α1≤45°.

22. The stator core (100) according to claim 17, characterized in that: Positioning portions (26) protruding outward are provided on both circumferential sides of the split teeth (22), and the positioning portions (26) are used for positioning and matching with the inner circumferential wall of the stator body (1).

23. A motor, characterized in that: It comprises a stator core (100) according to any one of claims 1 to 22.

24. A compressor, characterized in that: include: A stator core (100) according to any one of claims 1 to 22; or, a motor according to claim 23.

25. A thermal management system, characterized in that: include: The stator core (100) according to any one of claims 1 to 22; or, the motor according to claim 23; Or, a compressor according to claim 24.

26. A vehicle, characterized in that: include: A stator core (100) according to any one of claims 1 to 22; or, an electric machine according to claim 23; or, a compressor according to claim 24; or, a thermal management system according to claim 25.

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