Stator module and processing method thereof, motor and electrical equipment

Abstract

The invention discloses a stator module and a processing method thereof, a motor and electrical equipment. The stator module comprises a plurality of stator punching sheets which are mutually overlapped and have annular structures, each stator punching sheet comprises a plurality of stator units, each stator unit is provided with a stator tooth monomer and two stator yoke monomers, each stator tooth monomer is provided with a main body part and a protruding part, the main body part is connected with the protruding part, and the two stator yoke monomers are located on two sides of the protruding part. The stator yoke single bodies and the stator tooth single bodies are integrally connected through first connecting points, and the stator yoke single bodies of adjacent stator units are integrally connected through second connecting points. Therefore, the stator punching sheet with an annular structure can be obtained by stretching and bending around the first connection point and the second connection point, and the stator yoke monomer and the stator tooth monomer do not need to be separated, so that the integrity of the stator module is improved, the manufacturing process of the stator module is simplified, the manufacturing process cost is reduced, and the production efficiency of the stator module is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motor equipment, and in particular to a stator module and a processing method thereof, a motor, and an electrical device. Background Art

[0002] The motor is the core driving component of industrial equipment. The motor usually consists of a stator and a rotor. When the stator is energized, it generates a magnetic field, causing the rotor to rotate, thereby causing the rotor to drive other equipment to rotate.

[0003] In the related art, the motor stator is usually composed of stator teeth and stator yokes that are separated from each other. The stator teeth and stator yokes, as well as adjacent stator yokes, are clamped together by dovetail grooves or the like to form an annular stator module.

[0004] The stator module of the above structure needs to be processed into stator teeth and stator yoke separately, and then the stator teeth and stator yoke are assembled together. In this way, the processing and assembly process of the stator module is complicated and the production efficiency is low. Summary of the Invention

[0005] The present disclosure provides a stator module and its processing method, a motor, and an electrical device that can solve the above-mentioned technical problems existing in the related art. The technical solution is as follows:

[0006] In a first aspect, a stator module is provided, wherein the stator module comprises a plurality of stator punchings stacked on each other and having an annular structure;

[0007] The stator punching sheet includes a plurality of stator units;

[0008] Each of the stator units has a stator tooth monomer and two stator yoke monomers;

[0009] The stator tooth monomer comprises a main body portion and a protruding portion, wherein the main body portion and the protruding portion are connected;

[0010] The two stator yoke units are located on both sides of the protruding portion, and the stator yoke units are integrally connected to the stator tooth units via a first connection point, wherein the first connection point is located on a side of the protruding portion close to the main body;

[0011] The stator yoke monomers of adjacent stator units are integrally connected via a second connection point, and the second connection point is located on a side of the stator yoke monomer away from the center of the stator module.

[0012] In some possible implementations, the stator tooth units are made of oriented silicon steel, and the rolling direction of the stator tooth units is along the radial direction of the stator module.

[0013] In some possible implementations, the stator yoke unit is made of oriented silicon steel, and a rolling direction of the stator yoke unit is parallel to a side of the stator yoke unit away from the center of the stator module.

[0014] In some possible implementations, the cross section of the protrusion perpendicular to the axial direction of the stator module is an isosceles triangle or an isosceles trapezoid.

[0015] In some possible implementations, when the cross-section is an isosceles triangle, the end angle of the protrusion is 90°.

[0016] In some possible implementations, the distance between the wall of each stator yoke unit away from the stator module axis and the stator module axis is equal;

[0017] The distance between the wall surface of each stator yoke unit close to the axis of the stator module and the axis of the stator module is equal.

[0018] In some possible implementations, the stator module further includes a winding, and the winding is wound on a side wall of the stator tooth unit.

[0019] In some possible implementations, the stator module further includes an insulating winding frame, which is located between the stator tooth unit and the winding and is connected to the stator tooth unit and / or the stator yoke unit.

[0020] In a second aspect, a method for processing a stator module is provided, the method comprising:

[0021] Punching a plurality of stator sheets having a first connection point and a second connection point on a raw material plate;

[0022] Overlapping and stretching the plurality of stator punching sheets so that the stator yoke unit rotates around the first connection point and / or the second connection point to obtain a chain stator core;

[0023] The chain-type stator core is bent to obtain the stator module with a ring structure.

[0024] In some possible implementations, before bending the chain-type stator core to obtain the stator module having an annular structure, the method for processing the stator module further includes:

[0025] An insulating bobbin is connected to the chain-type stator core, and a winding is wound around the outer surface of the insulating bobbin.

[0026] In a third aspect, a motor is provided, comprising the stator module according to any one of the first aspects.

[0027] In a fourth aspect, an electrical device is provided, comprising the stator module described in any one of the first aspects or the motor described in any one of the third aspects.

[0028] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0029] In the present disclosure, the stator yoke monomer and the stator tooth monomer are integrally connected through a first connection point, and adjacent stator yoke monomers are integrally connected through a second connection point. In this way, a stator punching sheet with an annular structure can be obtained by stretching and bending around the first connection point and the second connection point. There is no need to separate the stator yoke monomer from the stator tooth monomer, which improves the integrity of the stator module, simplifies the manufacturing process of the stator module, reduces the manufacturing process cost, and improves the production efficiency of the stator module.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 It is a structural schematic diagram of a stator punching sheet provided in an embodiment of the present disclosure.

[0033] Figure 2 It is a structural schematic diagram of a stator punching sheet provided in an embodiment of the present disclosure.

[0034] Figure 3 It is a structural schematic diagram of a stator module provided in an embodiment of the present disclosure.

[0035] Figure 4 This is a schematic diagram of the processing position of a stator punching sheet provided in an embodiment of the present disclosure.

[0036] Figure 5 It is a partial schematic diagram of a stator module provided in an embodiment of the present disclosure.

[0037] Figure 6 It is a structural schematic diagram of a stator punching sheet provided in an embodiment of the present disclosure.

[0038] Figure 7 It is a structural schematic diagram of a stator module provided in an embodiment of the present disclosure.

[0039] Figure 8It is a flow chart of a method for processing a stator module provided in an embodiment of the present disclosure.

[0040] Reference numerals:

[0041] 1. Stator lamination; 1a. First connection point; 1b. Second connection point;

[0042] 10. Stator unit;

[0043] 11. stator tooth monomer; 111. main body; 111a. tooth shoe structure; 112. protrusion;

[0044] 12. Stator yoke monomer;

[0045] 20. Winding;

[0046] 30. Insulated winding frame;

[0047] A. Waste area.

[0048] The above drawings illustrate specific embodiments of the present disclosure, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the present disclosure in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0050] The following explains terms that may appear in the embodiments of the present disclosure.

[0051] Grain-oriented silicon steel refers to silicon steel sheets whose internal grain arrangement has a clear directionality, i.e., anisotropy in all directions. During the rolling process of oriented silicon steel, a special processing technique is used to align all the grains within the sheet along the same direction, which is the rolling direction of the oriented silicon steel. This arrangement significantly improves the magnetic permeability of the silicon steel sheet in the rolling direction, which means that oriented silicon steel has superior high magnetic permeability and low iron loss in the rolling direction.

[0052] Non-oriented silicon steel: refers to silicon steel sheets whose internal grain arrangement has no clear direction, that is, they are homogeneous in all directions.

[0053] Iron loss: Iron loss refers to the sum of hysteresis loss, eddy current loss, and residual loss per unit mass of ferromagnetic material in an alternating and pulsating magnetic field. It is measured in W / kg (watts per kilogram). Transformers, generators, and electric motors all experience iron loss. Iron loss is a form of energy loss caused by hysteresis and eddy currents within the iron core during operation, generating heat. This heat dissipates energy, hence the term "iron loss."

[0054] Electric motors are the core drive components of industrial equipment. They typically consist of a stator and a rotor. For example, when AC current is applied to the stator windings, a rotating magnetic field is generated. The rotor, inducing this rotating magnetic field, generates torque, causing the rotor to rotate. The rotor then transmits this electromagnetic torque to an external load via the shaft. The magnetic field generated by the stator interacts with the magnetic field of the rotor, converting electrical energy into mechanical energy (for motors) or mechanical energy into electrical energy (for generators).

[0055] In the related art, the motor stator using oriented silicon steel is usually composed of stator teeth and stator yokes that are separated from each other. The stator teeth and stator yokes, as well as adjacent stator yokes, are clamped together by dovetail grooves or the like to form an annular stator module.

[0056] The stator module structure described above requires separate machining of the stator teeth and stator yoke, which are then assembled together. This results in complex machining and assembly processes and low production efficiency. Furthermore, high machining accuracy and cross-sectional roughness are required in the connection area between the stator teeth and stator yoke. If the stator teeth and stator yoke utilize an interference fit, assembly becomes difficult and inefficient. If the stator teeth and stator yoke utilize a clearance fit, secondary air gaps are likely to form at the gap location, increasing the magnetic resistance of the magnetic circuit.

[0057] The present disclosure provides a stator module, referring to Figure 1 As shown, the stator module includes a plurality of stator punching sheets 1 stacked on each other and having an annular structure. The stator punching sheet 1 includes a plurality of stator units 10, each stator unit 10 having a stator tooth monomer 11 and two stator yoke monomers 12, the stator tooth monomer 11 having a main body 111 and a protruding portion 112, the main body 111 and the protruding portion 112 being connected, the two stator yoke monomers 12 being located on both sides of the protruding portion 112, the stator yoke monomer 12 being integrally connected to the stator tooth monomer 11 through a first connection point 1a, the first connection point 1a being located on a side of the protruding portion 112 close to the main body 111, and the stator yoke monomers 12 of adjacent stator units 10 being integrally connected through a second connection point 1b, the second connection point 1b being located on a side of the stator yoke monomer 12 away from the center of the stator module.

[0058] Reference Figure 1 and Figure 2 As shown, the stator yoke monomers 12 located on both sides of the main body 111 can be stretched to the positions on both sides of the protrusion 112 around the first connection point 1a, and the adjacent stator yoke monomers 12 can be bent into an arc structure around the second connection point 1b.

[0059] In this way, a stator punching sheet 1 with an annular structure can be obtained by stretching and bending around two connection points. There is no need to separate the stator yoke monomer 12 from the stator tooth monomer 11, which improves the integrity of the stator module, simplifies the manufacturing process of the stator module, reduces the manufacturing process cost, and improves the production efficiency of the stator module.

[0060] The integrated stator tooth monomer 11 and stator yoke monomer 12 also reduce the impact of their assembly accuracy on the motor. They can not only realize the assembly process of the two through stretching and bending, but also avoid the existence of large gaps between the two, effectively reduce the magnetic resistance of the magnetic circuit, increase the air gap magnetic density, and thus improve the torque and efficiency of the motor.

[0061] The present disclosure does not limit the number of stator units 10 included in a stator punching sheet 1, and can be matched and set according to parameters such as the number of motor poles, motor slot fill rate, motor magnetic circuit design, winding type, etc.

[0062] The present disclosure does not impose any specific restrictions on the size parameters of the two stator yoke units 12 corresponding to one stator unit 10, and they can be matched and set according to parameters such as the overall size design of the stator module and the motor weight requirements.

[0063] The size parameters of the two stator yoke monomers 12 corresponding to a stator unit 10 can be the same or different. This disclosure takes the example of the two stator yoke monomers 12 corresponding to a stator unit 10 having the same size parameters as each other, that is, the stator tooth monomer 11 is located at the center of the stator unit 10.

[0064] In some embodiments, reference Figure 1 and Figure 2 As shown, the main body 111 has a toothed shoe structure 111a, which is located at the end of the main body 111 away from the protrusion 112. The provision of toothed shoe structure 111a can firstly concentrate the magnetic field distribution at the end of the stator yoke unit 12, reducing local concentration and distortion of the magnetic field, thereby reducing iron loss and eddy current loss, and improving the output power and efficiency of the motor. Secondly, it can also increase the surface area of the end of the stator yoke unit 12, improve heat dissipation efficiency, reduce the temperature of the stator module, and improve the thermal stability of the motor. Finally, it also facilitates the installation and fixation of the winding 20 and the insulating winding frame 30, improving the production and assembly efficiency of the stator module.

[0065] The present disclosure does not specifically limit the shape of the tooth shoe structure 111a, and it can be matched and set according to factors such as the use scenario and performance requirements of the stator module. For example, the tooth shoe structure 111a can be trapezoidal, and the inclined surface of the trapezoidal tooth shoe structure 111a can limit the movement of the winding 20 wound on the main body 111, preventing the winding 20 from falling off the main body 111. In another example, the tooth shoe structure 111a can be arc-shaped, and the arc-shaped tooth shoe structure 111a can more evenly distribute the magnetic field and improve the efficiency of the motor.

[0066] In some embodiments, reference Figure 7 As shown, multiple stacked stator punchings 1 are connected. The present disclosure does not specifically limit the connection method between the stator punchings 1. Removable connection methods such as threaded fastening connection and snap connection can be used, and non-detachable connection methods such as glue dispensing and welding can also be used. The specific setting can be matched according to factors such as the size of the stator punching 1, the use scenario of the stator module, and the connection strength requirements between the multiple stacked stator punchings 1.

[0067] In other embodiments, the stator module includes a housing, and the size parameters of the housing are adapted to the size parameters of the stacked plurality of stator punchings 1. For example, the housing is an end plate structure, and the two end plates are respectively abutted against the two ends of the stacked plurality of stator punchings 1, and then the two end plates are fixed together by bolts or welding, thereby achieving fixation between the plurality of stator punchings 1 and preventing the stacked stator punchings 1 from loosening or falling off.

[0068] In some embodiments, the stator tooth unit 11 is made of oriented silicon steel, and the rolling direction of the stator tooth unit 11 is along the radial direction of the stator module.

[0069] Compared with non-oriented silicon steel, oriented silicon steel has higher magnetic permeability and lower iron loss along the rolling direction, so the stator tooth unit 11 uses oriented silicon steel to improve the motor torque and efficiency.

[0070] The radial direction of the stator module refers to the radial direction corresponding to the center of the stator tooth monomer 11. For example, a stator tooth monomer 11 having a rectangular interface perpendicular to the axial direction of the stator module is used for illustration. The radial direction of this stator tooth monomer 11 is the radial direction corresponding to the centerline equidistant from the two edges of the stator tooth monomer 11 in the circumferential direction of the stator module. Therefore, the rolling direction of this stator tooth monomer 11 is parallel to the radial direction corresponding to the centerline. Stator tooth monomers 11 of other shapes are similar to the rectangular stator tooth monomer 11 and are not further described here.

[0071] According to the characteristics of oriented silicon steel material, at this time, the iron loss of the stator tooth monomer 11 along the radial direction of the stator module is small, and the magnetic permeability is good. The magnetic lines of force located in the stator tooth monomer 11 area are basically parallel to the rolling direction of the stator tooth monomer 11 or have a small deviation angle, so the overall magnetic permeability of the stator tooth monomer 11 area is good.

[0072] In some embodiments, the stator yoke unit 12 is made of oriented silicon steel, and the angle formed by the rolling direction of the stator yoke unit 12 and the side of the stator yoke unit 12 away from the center of the stator module is smaller than a preset angle.

[0073] According to the characteristics of oriented silicon steel material, at this time, the iron loss of the stator yoke monomer 12 along the rolling direction of the stator yoke monomer 12 is small, and the magnetic permeability is good. The magnetic lines of force located in the stator yoke monomer 12 area are basically parallel to the rolling direction of the stator yoke monomer 12 or the angle is small, so the overall magnetic permeability of the stator yoke monomer 12 area is good.

[0074] In some embodiments, the preset angle is 30°-45°. For example, the preset angle can be: 30°, 35°, 40°, 45°. If the preset angle is too large, the angle formed by the rolling direction of the stator yoke monomer 12 and the side of the stator yoke monomer 12 away from the center of the stator module will also be large. Figure 2 It can be seen that the larger angle results in a larger waste area A between the stator yoke monomers 12 of adjacent stator units 10 , which requires a larger amount of raw materials for the stator module and results in higher manufacturing costs.

[0075] In some embodiments, the angle formed by the rolling direction of the stator yoke monomer 12 and the side of the stator yoke monomer 12 away from the center of the stator module is zero. Figure 2 It can be seen that the waste area A between the stator yoke monomers 12 of adjacent stator units 10 is relatively small, which is beneficial to further reduce the waste rate during the stator module processing and reduce the manufacturing cost of the stator module. Figure 1 and Figure 2 As shown, the cross section of the protrusion 112 perpendicular to the axial direction of the stator module is an isosceles triangle or an isosceles trapezoid.

[0076] When the cross-section of the protrusion 112 is an isosceles triangle, the angles between the two sides of the isosceles triangle and the base are equal, and the angles between the side walls of the two stator yoke monomers 12 that are in contact with the protrusion 112 and the two side walls of the stator yoke monomers 12 in the radial direction of the stator module are also equal, which is beneficial to the processing of the stator yoke monomers 12 and thus reduces the processing complexity of the stator module.

[0077] When the cross-section of the protrusion 112 is an isosceles trapezoid, the two sidewalls of the protrusion 112 corresponding to the two sides of the isosceles trapezoid are respectively connected to the two stator yoke units 12. Because the angles between the two sides of the isosceles trapezoid and the upper and lower bases are equal, the angles between the sidewalls of the two stator yoke units 12 that contact the protrusion 112 and the two sidewalls of the stator yoke units in the radial direction of the stator module are also equal, which facilitates the machining of the stator yoke units 12 and reduces the machining complexity of the stator module.

[0078] The present disclosure does not make any specific restrictions on the angles between the two waists and the base of the protrusion 112 with an isosceles triangle cross-section, and the angles between the two waists and the upper and lower bases of the protrusion 112 with a waist trapezoidal cross-section. They can be matched and set according to dimensional parameters such as the width of the main body 111 corresponding to the protrusion 112 and the width of the adjacent stator yoke monomer 12.

[0079] In some embodiments, when the cross section is an isosceles triangle, the angle of the end of the protrusion 112 is 90°.

[0080] In the case of an isosceles triangle cross-section, the distal end of the protrusion 112 forms a 90° angle. This allows the magnetic flux from the main body 111 to be evenly distributed through the protrusion 112 to the two adjacent stator yoke units 12 of the stator tooth unit 11, thereby ensuring uniform distribution of the magnetic flux within the stator unit 10. This even distribution of magnetic flux helps reduce the overall energy consumption of the stator module and improve the motor's operating efficiency.

[0081] Reference Figure 4 As shown, the end angle of the protrusion 112 is 90°. Figure 4 When the stamping arrangement scheme is adopted, the area of the gap between the stator tooth monomer 11 and the stator yoke monomer 12 in the relative position (i.e., the waste area A) is smaller, thereby improving the utilization rate of the silicon steel sheet raw material plate, reducing the amount of waste in the stator module processing process, and reducing the raw material usage cost of the stator module.

[0082] In some embodiments, the distance from the wall of each stator yoke monomer 12 away from the stator module axis to the stator module axis is equal, and the distance from the wall of each stator yoke monomer 12 close to the stator module axis to the stator module axis is equal.

[0083] The distance between the wall of each stator yoke monomer 12 away from the axis of the stator module and the axis of the stator module is equal, and the stator module has a relatively flat outer edge. On the one hand, it can reduce the noise and vibration generated during the operation of the motor; on the other hand, it helps to improve the heat dissipation effect of the stator module, and the heat can be evenly conducted to the surrounding air, thereby reducing the temperature during the operation of the motor.

[0084] The distance from the wall of each stator yoke monomer 12 close to the stator module axis to the stator module axis is equal. At this time, it can be ensured that the accommodation space formed by the main body 111 of adjacent stator tooth monomers is the same, which facilitates the uniform winding of the winding 20 on the outer wall of the main body 111.

[0085] In some embodiments, reference Figure 5 As shown, the stator module further includes a winding 20 , which is wound around the side wall of the stator tooth unit 11 .

[0086] The winding 20 is wound by a conductive wire. The present disclosure does not specifically limit the type of stator winding. It can be matched and set according to factors such as the use scenario of the motor, the number of poles, and the winding shape of the conductive wire. For example, single-phase winding, three-phase winding, centralized winding, distributed winding, etc. The present disclosure does not specifically limit the type of conductive wire. It can be round wire or flat wire.

[0087] The winding 20 is wound around the outside of the main body 111. When the winding 20 is energized, it can generate a corresponding rotating magnetic field. The rotor module can generate high-speed rotation under the drive of the rotating magnetic field generated by the winding 20, thereby realizing the operation of the motor.

[0088] In some embodiments, reference Figure 5 As shown, the stator module further includes an insulating winding frame 30 , which is located between the stator tooth unit 11 and the winding 20 , and is connected to the stator tooth unit 11 and / or the stator yoke unit 12 .

[0089] The insulating winding frame 30 is sleeved on the outer wall of the stator tooth unit 11. The shape of the insulating winding frame 30 is adapted to the shape of the stator unit 10. The insulating winding frame 30 can ensure the insulation between the stator unit 10 and the winding 20, and prevent the insulating shell of the winding 20 from being damaged so that the conductive area in the winding 20 is exposed and directly contacts the stator unit 10, thereby causing danger in the use of the motor.

[0090] The present disclosure does not specifically limit the material of the insulating winding frame 30 , and the insulating winding frame 30 can be selected based on the insulation performance requirements of the insulating winding frame 30 , such as nylon, plastic, rubber, etc. The present disclosure does not specifically limit the connection method between the insulating winding frame 30 and the stator tooth unit 11 , and the insulating winding frame 30 and the stator tooth unit 11 can be connected by detachable connection methods such as threaded fastening and snap connection, or by non-detachable connection methods such as glue dispensing and welding. The specific setting can be matched based on factors such as the use scenario of the stator module and the connection strength between the insulating winding frame 30 and the stator unit 10 of different motors.

[0091] The present disclosure also provides a motor comprising a stator core or stator module according to any of the above embodiments. The motor may further comprise a rotor module, the rotor module comprising a rotor body and a magnetic component. The rotor body rotates along a predetermined axis of the motor. The magnetic component is located on the outer wall of the rotor body and is connected to the rotor body. The present disclosure does not specifically limit the material of the magnetic component, and examples include neodymium iron boron, ferrite, aluminum nickel cobalt, and samarium cobalt.

[0092] In some embodiments, the motor may further include a housing (not shown), which may be sleeved outside the stator module and extend along the axial direction of the stator module.

[0093] The housing has a hollow cavity, within which the stator and rotor modules are located and connected to the housing. In the axial direction of the motor, the stator and rotor modules are shorter than the length of the motor housing, and the opposite ends of the stator and rotor modules are located within the motor housing. The housing protects the stator and rotor modules within it, preventing foreign matter (e.g., sand, water droplets, etc.) from entering the working area of the stator and rotor modules, which could cause cracks or even breakage in the stator and rotor modules.

[0094] The present disclosure does not limit the type of motor, and the motor can be selected based on the motor's usage scenario, power requirements, storage space, etc. For example, the motor can be a permanent magnet synchronous motor, a permanent magnet direct current motor, a permanent magnet asynchronous motor, etc.

[0095] Correspondingly, the advantages of the above-mentioned stator module include the same advantages as those of the motor including the stator module, which will not be elaborated here.

[0096] The present disclosure also provides an electrical device, which may include a motor or stator module as described in any one of the above embodiments. For example, the electrical device may be a washing machine, a fan, an electric drill, an electric bicycle, or the like.

[0097] Correspondingly, the advantages of the above-mentioned motor or stator module also include the same advantages of the electrical equipment including such motor or stator module, which will not be elaborated here.

[0098] Based on the same concept, the present disclosure also provides a method for processing a stator module. Figure 8 As shown, the processing method includes:

[0099] 801. Punch a plurality of stator sheets 1 having a first connection point 1a and a second connection point 1b on a raw material plate.

[0100] Reference Figure 4 As shown, when stamping the stator sheet 1 on the raw material plate of oriented silicon steel, the Figure 4In the arrangement shown, the serrated edges of the two stator punching sheets 1 are opposite to each other, that is, the protrusions 112 are opposite to each other. In this way, the outer contours of the two stator punching sheets 1 are close to a rectangle, which is conducive to reducing the distance between these two stator punching sheets 1 and other stator punching sheets 1 on the raw material plate, thereby improving the utilization rate of the silicon steel sheet raw material plate, reducing the amount of waste in the stator module processing process, and reducing the raw material usage cost of the stator module.

[0101] 802 , overlapping and stretching a plurality of stator punching sheets 1 so that the stator yoke unit 12 rotates around the first connection point 1 a and / or the second connection point 1 b to obtain a chain stator core.

[0102] The stretching process is as follows:

[0103] When the stretching starts, the state of the stator punching 1 is as follows Figure 2 As shown, the two stator yoke units 12 are respectively located on both sides of the main body 111 .

[0104] During the stretching process, the state of stator punching 1 refers to Figure 6 As shown, the two stator yoke units 12 gradually move away from the main body 111 and gradually approach the protruding portion 112 .

[0105] At the end of stretching, the state of stator punching 1 is as follows Figure 1 As shown, the two stator yoke monomers 12 are respectively located on both sides of the protruding portion 112 , and at this time, a chain-type stator core is obtained.

[0106] 803 , bend the chain-type stator core to obtain a stator module with a ring structure.

[0107] The bending process is as follows:

[0108] When bending begins, the state of stator punching 1 is as follows Figure 1 As shown, the stator punching sheet 1 is in a chain-type stator core state.

[0109] At the end of bending, the state of stator sheet 1 is as follows Figure 3 As shown, the stator punching sheets 1 are connected end to end to form a ring structure.

[0110] In some embodiments, before bending the chain-type stator core to obtain a stator module having an annular structure, the stator module processing method further includes:

[0111] 804 , connect the insulating winding frame 30 to the chain-type stator core, and wind the winding 20 on the outer surface of the insulating winding frame 30 .

[0112] Reference Figure 5As shown, when the stator punching sheet 1 is in the chain stator core state, the insulating winding frame 30 and the winding 20 are placed in sequence on the outside of the stator unit 10. At this time, the target placement position of the winding 20 is relatively open, which is convenient for the setting of the winding 20 and helps the assemblers to improve the assembly efficiency of the winding 20.

[0113] The logic and / or steps represented in the flowchart or otherwise described herein may be considered, for example, as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device).

[0114] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0115] In the description of this specification, the description with reference to the terms "certain embodiments", "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 embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0116] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0117] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0118] It should be further understood that terms such as "center," "longitudinal," "lateral," "front," "back," "up," "down," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present embodiment and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0119] It is further understood that, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral molding; they may refer to mechanical connections, electrical connections, or communication between them; they may refer to direct connections without any other components between them, or indirect connections through an intermediary; they may refer to internal communication between two elements, or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0120] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0121] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0122] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A stator module, characterized in that: The stator module comprises a plurality of stator punching sheets (1) stacked on each other and having an annular structure; The stator punching sheet (1) includes a plurality of stator units (10); Each of the stator units (10) has a stator tooth monomer (11) and two stator yoke monomers (12); The stator tooth monomer (11) comprises a main body portion (111) and a protruding portion (112), wherein the main body portion (111) and the protruding portion (112) are connected; The two stator yoke monomers (12) are located on both sides of the protruding portion (112), and the stator yoke monomer (12) and the stator tooth monomer (11) are integrally connected via a first connection point (1a), wherein the first connection point (1a) is located on a side of the protruding portion (112) close to the main body (111); The stator yoke monomers (12) of adjacent stator units (10) are integrally connected via a second connection point (1b), and the second connection point (1b) is located on a side of the stator yoke monomer (12) away from the center of the stator module.

2. The stator module according to claim 1, characterized in that: The stator tooth monomer (11) is made of oriented silicon steel, and the rolling direction of the stator tooth monomer (11) is along the radial direction of the stator module.

3. The stator module according to claim 1, characterized in that: The stator yoke monomer (12) is made of oriented silicon steel, and the angle formed by the rolling direction of the stator yoke monomer (12) and the side of the stator yoke monomer (12) away from the center of the stator module is smaller than a preset angle.

4. The stator module according to claim 3, characterized in that: The angle formed by the rolling direction of the stator yoke monomer (12) and the side of the stator yoke monomer (12) away from the center of the stator module is zero.

5. The stator module according to claim 1, characterized in that: The protrusion (112) has an isosceles triangle or an isosceles trapezoid in a cross section perpendicular to the axial direction of the stator module.

6. The stator module according to claim 5, characterized in that: When the cross section is an isosceles triangle, the end angle of the protrusion (112) is 90°.

7. The stator module according to claim 1, characterized in that: The distance between the wall surface of each stator yoke monomer (12) away from the stator module axis and the stator module axis is equal; The distance between the wall surface of each stator yoke monomer (12) close to the stator module axis and the stator module axis is equal.

8. A method for processing a stator module, characterized in that: The processing method comprises: Punching a plurality of stator sheets (1) having a first connection point (1a) and a second connection point (1b) on a raw material plate; The plurality of stator punching sheets (1) are overlapped and stretched so that the stator yoke monomer (12) rotates around the first connection point (1a) and / or the second connection point (1b), thereby obtaining a chain stator core; The chain-type stator core is bent to obtain the stator module with a ring structure.

9. The processing method according to claim 8, characterized in that: Before bending the chain-type stator core to obtain the stator module having an annular structure, the processing method of the stator module further includes: An insulating bobbin (30) is connected to the chain-type stator core, and a winding (20) is wound around the outer surface of the insulating bobbin (30).

10. A motor, characterized in that: The motor includes the stator module according to any one of claims 1 to 7.

11. An electrical device, characterized in that: The electrical equipment includes the stator module according to any one of claims 1 to 7 or the motor according to claim 10.

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