Stator module, motor and electrical equipment

Abstract

The invention discloses a stator module, a motor and electrical equipment, and belongs to the technical field of motors. The stator module comprises a stator core and a winding, the winding is provided with a first winding layer, a second winding layer and an inclined section, the inclined section is obliquely placed from the first winding layer to the second winding layer, the position of the inclined section corresponds to the first side wall of a stator tooth, and the inclined section is connected with the first winding layer and the second winding layer. The number of turns of the winding can be increased by increasing the number of layers of the winding, the output voltage and the motor power of the motor are improved, and the motor is suitable for occasions with high power requirements and high number of turns.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motors, and particularly to a stator module, a motor, and an electrical appliance device. Background Art

[0002] With the development of technology, people have higher and higher requirements for motors, and expect the slot fill factor of motors to increase continuously. The slot fill factor is the ratio of the cross-sectional area of the wire in the stator slot to the effective area of the bare slot. Theoretically, for motors of the same specification, the higher the slot fill factor, the greater the output torque of the motor and the higher the power density.

[0003] In most motors, the stator is wound with copper wires having a circular cross-section. During the winding process, the copper wires with a circular cross-section are mostly in line contact, and there are large gaps on both sides of the contact line. The cross-sectional area of the wire is small and the resistance is large, increasing the tooth-slot porosity and resulting in a low slot fill factor of the motor. In the related art, a flat wire winding is used to replace the round wire to wind the stator core, and the winding axis is parallel to the radial direction of the motor, and the winding is wound in a plane perpendicular to the radial direction of the motor.

[0004] Due to the limited radial space of the winding, the number of turns of the flat wire winding is limited, resulting in a small output torque of the motor and a low motor power, and it cannot be applied to occasions with high power requirements and many turns requirements. Summary of the Invention

[0005] Embodiments of the present disclosure provide a stator module, a motor, and an electrical appliance device, which can solve the above technical problems existing in the related art. The technical solutions are as follows:

[0006] On the one hand, a stator module is provided, including a stator core and a winding;

[0007] The stator core includes a stator yoke and stator teeth, and the stator teeth are connected to the stator yoke;

[0008] The winding has a first winding layer, a second winding layer, and an inclined section. The distances from the first winding layer and the second winding layer to the stator yoke are different. The first winding layer and the second winding layer are respectively wound around the stator teeth. The inclined section is inclined from the first winding layer to the second winding layer and is respectively connected to the first winding layer and the second winding layer. The position of the inclined section corresponds to the first side wall of the stator tooth, and the length of the first side wall in the winding winding direction is greater than the second side wall of the stator tooth.

[0009] Optionally, the inclined section has a first connection end and a second connection end, and the distance between the first connection end and the second connection end in the winding winding direction is equal to the length of the first side wall in the winding winding direction.

[0010] Optionally, the first winding layer is wound clockwise from the inside out, and the second winding layer is wound counterclockwise from the inside out; or, the first winding layer is wound counterclockwise from the inside out, and the second winding layer is wound clockwise from the inside out.

[0011] Optionally, the first winding layer has a third connection end and a fourth connection end. The third connection end is located on the side of the first winding layer away from the stator tooth, and the fourth connection end is located on the side of the first winding layer close to the stator tooth and is connected to the inclined section. The second winding layer has a fifth connection end and a sixth connection end. The fifth connection end is located on the side of the second winding layer away from the stator tooth, and the sixth connection end is located on the side of the second winding layer close to the stator tooth and is connected to the inclined section.

[0012] Optionally, the stator module includes a plurality of the windings, and the distances between the plurality of windings and the stator yoke are different; for any two adjacent windings, the fifth connection end in the winding close to the stator yoke is connected to the third connection end in the winding away from the stator yoke.

[0013] Optionally, the length of the stator tooth in the axial direction of the winding is greater than or equal to the sum of the lengths of all the windings in the axial direction of the winding.

[0014] Optionally, the winding is a flat wire wound around the stator tooth, and the cross-sectional shape of the flat wire is rectangular.

[0015] Optionally, the flat wire includes a conductor and an insulating layer. The insulating layer is located on the outer surface of the conductor and is in contact with the conductor.

[0016] Optionally, the stator module further includes an insulating member. The insulating member is located between the stator core and the winding and is connected to the stator core.

[0017] In a second aspect, the present disclosure provides a motor, which includes the stator module in any one of the first aspects, and the stator yokes of a plurality of the stator modules are annularly connected.

[0018] In a third aspect, the present disclosure provides an electrical device, which includes the motor in any one of the second aspects.

[0019] The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure at least include:

[0020] In the embodiments of the present disclosure, the winding has a first winding layer, a second winding layer, and an inclined section. The inclined section is inclined from the first winding layer to the second winding layer and is connected to the first winding layer and the second winding layer respectively. The increase in the number of winding layers can increase the number of turns of the winding, improve the output voltage and power of the motor, and is applicable to occasions with high power requirements and many turns requirements.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is an exploded schematic diagram of a stator module provided by an embodiment of the present disclosure;

[0024] Figure 2 is a cross-sectional schematic diagram of a winding provided by an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of a winding provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of a stator module provided by an embodiment of the present disclosure;

[0027] Figure 5 is a cross-sectional schematic diagram of a stator module provided by an embodiment of the present disclosure;

[0028] Figure 6 is a cross-sectional schematic diagram of a flat wire provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of an insulating part provided by an embodiment of the present disclosure;

[0030] Figure 8 is a structural schematic diagram of a spliced stator module provided by an embodiment of the present disclosure;

[0031] Figure 9 is a structural schematic diagram of a stator core provided by an embodiment of the present disclosure.

[0032] Reference numerals:

[0033] Stator core 1, stator yoke 11, stator teeth 12, first side wall 12a, second side wall 12b;

[0034] Winding 2, wire 2a, insulating layer 2b, first winding layer 21, third connection end 21a, fourth connection end 21b, second winding layer 22, fifth connection end 22a, sixth connection end 22b, inclined section 23, first connection end 23a, second connection end 23b;

[0035] Insulating part 3. Specific implementation manner

[0036] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0037] Figure 1 It is an exploded schematic diagram of a stator module provided by an embodiment of the present disclosure. Refer to Figure 1 As shown, an embodiment of the present disclosure provides a stator module, and the stator module may include a stator core 1 and a winding 2.

[0038] The present disclosure does not specifically limit the number of windings 2 in the stator module. When the number of windings 2 is single, the two connection ends of the winding 2 are respectively connected to other components of the stator module.

[0039] The following will introduce each component of the stator module respectively:

[0040] I. Stator Core 1

[0041] In some embodiments, as Figure 9 shown, Figure 9 It is a structural schematic diagram of a stator core 1 provided by an embodiment of the present disclosure. The stator core 1 may include a stator yoke 11 and stator teeth 12, and the stator teeth 12 are connected to the stator yoke 11.

[0042] The stator yoke 11 is a crossbeam structure connecting the stator teeth 12. The stator yoke 11 can increase the rigidity of the stator core 1 and prevent the stator teeth 12 from falling off due to vibration during high-speed operation. At the same time, the stator yoke 11 is also a support structure for the winding 2, which can fix the position of the winding 2 and keep the winding 2 stable during operation without falling off.

[0043] The stator yoke 11 has a connection structure, and multiple stator yokes 11 can be connected through the connection structure. The present disclosure does not specifically limit the specific connection method and position of the connection structure. For example: the connection structure can be a snap connection structure, an embedded connection structure, a welding connection structure, etc.

[0044] The stator teeth 12 are tooth-shaped protrusions formed on the stator core 1 of the motor, which can cooperate with the rotor teeth of the rotor module to realize the magnetic field interaction between the rotor module and the stator module, and generate torque to drive the rotation of the rotor module.

[0045] The present disclosure does not specifically limit the shape of the stator teeth 12, which can be matched and set according to factors such as structural rigidity, magnetic field distribution, vibration damping effect, manufacturing cost, etc. For example, the shape of the stator teeth 12 can be rectangular, stepped, trapezoidal, etc.

[0046] As Figure 9 shown, the stator teeth 12 are stepped. The stepped stator teeth 12 have relatively high rigidity, and each tooth has a supporting effect. At the same time, the torque of the stepped stator teeth 12 is stable, which can reduce the vibration of the stator module.

[0047] Another example is Figure 5 shown, the stator teeth 12 are trapezoidal. The trapezoidal stator teeth 12 can reduce the magnetic density at the stator teeth 12, reduce the iron loss of the stator module, and improve the motor efficiency. At the same time, the manufacturing process of the trapezoidal stator teeth 12 is simple and the manufacturing cost is relatively low.

[0048] II. Winding 2

[0049] In some embodiments, as Figure 1 and 3 shown, Figure 3 is a schematic structural diagram of a winding 2 provided by an embodiment of the present disclosure. The winding 2 has a first winding layer 21, a second winding layer 22, and an inclined section 23. The distances from the first winding layer 21 and the second winding layer 22 to the stator yoke 11 are different. The first winding layer 21 and the second winding layer 22 are respectively wound around the stator teeth 12. The inclined section 23 is inclined from the first winding layer 21 to the second winding layer 22 and is respectively connected to the first winding layer 21 and the second winding layer 22. The position of the inclined section 23 corresponds to the first side wall 12a of the stator teeth 12. The length of the first side wall 12a in the winding direction of the winding 2 is greater than the second side wall 12b of the stator teeth 12.

[0050] The inclined section 23 corresponds to the first side wall 12a of the stator teeth 12. At the same time, the length of the first side wall 12a in the winding direction of the winding 2 is greater than the second side wall 12b of the stator teeth 12, which avoids the inclined section 23 completing the transition between different layers in a small space, and a small bending radius is likely to cause damage to the insulating shell of the inclined section 23.

[0051] The present disclosure does not specifically limit the position where the inclined section 23 corresponds to the first side wall 12a of the stator teeth 12, which can be matched and set according to factors such as the length of the first side wall 12a in the winding direction of the winding 2 and the bending radius of the inclined section 23.

[0052] The winding 2 may further have a third winding layer and a second inclined section. The third winding layer has a seventh connection end and an eighth connection end. The eighth connection end is located on the side of the third winding layer close to the stator teeth 12, and the seventh connection end is located on the side of the third winding layer far from the stator teeth 12 and is connected to the second inclined section.

[0053] The winding 2 can also have multiple winding layers, specifically an even number of layers, so that the two external connection ends of the winding 2 are located on the side of the winding 2 away from the stator teeth 12, which is convenient for the two external connection ends to be connected to other components of the stator module, and avoids the situation where the external connection end is located on the side of the winding 2 close to the stator teeth 12, and needs to be bent multiple times before it can be connected to other components of the stator module. The bending process can easily damage the insulating shell at the external connection end.

[0054] 2.1 First winding layer 21

[0055] In some embodiments, all layers of the first winding layer 21 have the same distance from the stator yoke 11, and the wires 2a of all layers of the first winding layer 21 can make the first winding layer 21 better fit with the stator yoke 11 and the second winding layer 22, avoiding the existence of structural gaps between the first winding layer 21 and the stator yoke 11 and the second winding layer 22, thereby limiting the increase in the slot fill rate of the stator module.

[0056] In some embodiments, Figure 2 and Figure 3 As shown, the first winding layer 21 has a third connection end 21a and a fourth connection end 21b. The third connection end 21a is located on a side of the first winding layer 21 away from the stator tooth 12, and the fourth connection end 21b is located on a side of the first winding layer 21 close to the stator tooth 12 and connected to the inclined section 23.

[0057] The fourth connection end 21b is connected to the inclined section 23, so that the first winding layer 21 can be connected to the second winding layer 22 through the inclined section 23. The third connection end 21a is located on the side of the first winding layer 21 away from the stator tooth 12, which is convenient for the third connection end 21a to be connected to the adjacent winding 2 or other components of the stator module, and avoids the situation where the third connection end 21a is located on the side of the first winding layer 21 close to the stator tooth 12, and the third connection end 21a needs to be bent more before it can be connected to the adjacent winding 2 or other components of the stator module, thereby causing damage to the insulating shell of the third connection end 21a.

[0058] 2.2 Second winding layer 22

[0059] In some embodiments, all layers of the second winding layer 22 have the same distance from the stator yoke 11, and all layers of the second winding layer 22 are parallel to each other, so that the second winding layer 22 can be better fitted with the stator yoke 11 and the first winding layer 21, avoiding the existence of structural gaps between the second winding layer 22 and the stator yoke 11 and the first winding layer 21, thereby limiting the increase in the slot fill rate of the stator module.

[0060] In some embodiments, Figure 2 and Figure 3As shown, the second winding layer 22 has a fifth connection end 22a and a sixth connection end 22b. The fifth connection end 22a is located on the side of the second winding layer 22 away from the stator tooth 12, and the sixth connection end 22b is located on the side of the second winding layer 22 close to the stator tooth 12 and is connected to the inclined section 23.

[0061] The connection of the sixth connection end 22b to the inclined section 23 enables the second winding layer 22 to be connected to the first winding layer 21 through the inclined section 23. The fifth connection end 22a is located on the side of the second winding layer 22 away from the stator tooth 12, facilitating the connection of the second winding layer 22 to the adjacent winding 2 or other components of the stator module. When the fifth connection end 22a is located on the side of the second winding layer 22 close to the stator tooth 12, it is necessary to perform more bending operations on the fifth connection end 22a before it can be connected to the adjacent winding 2 or other components of the stator module, thereby damaging the insulating shell of the fifth connection end 22a.

[0062] 2.3 Inclined section 23

[0063] In some embodiments, as Figure 2 shown, Figure 2 is a schematic cross-sectional view of a winding 2 provided by an embodiment of the present disclosure. The inclined section 23 has a first connection end 23a and a second connection end 23b. The distal distance between the first connection end 23a and the second connection end 23b is D, and the distance of the distal distance between the first connection end 23a and the second connection end 23b in the winding direction of the winding 2 is d, that is, D is d in the winding direction of the winding 2. The length of the first side wall 12a of the stator tooth 12 in the winding direction of the winding 2 is S, where d is less than or equal to S.

[0064] Optionally, when d = S, that is, the projected length of the distal distance between the first connection end 23a and the second connection end 23b in the winding direction of the winding 2 is equal to the length of the first side wall 12a of the stator tooth 12 in the winding direction of the winding 2. Such a setting can increase the area occupied by the inclined section 23 to complete the interlayer transition work between different layers of the first winding layer 21 and the second winding layer 22, increase the bending radius of the inclined section 23, and further reduce the damage to the insulating shell of the inclined section 23 caused by the bending of the winding 2.

[0065] 2.4 Relationship between the first winding layer 21 and the second winding layer 22

[0066] The present disclosure does not specifically limit the number of winding layers of the first winding layer 21 and the second winding layer 22. The number of winding layers of the first winding layer 21 and the second winding layer 22 can be the same or different, and can be matched and set according to factors such as the shape of the stator tooth 12 and the slot fill factor of the stator module.

[0067] The innermost circles of the first winding layer 21 and the second winding layer 22 are flush in the radial direction of the winding 2, which can ensure that the inclined section 23 better fits the first side wall 12a of the stator tooth 12, avoid structural gaps between the first winding layer 21, the stator yoke 11, and the second winding layer 22, and limit the improvement of the slot fill factor of the stator module.

[0068] The outermost circle of the first winding layer 21 is farther from the winding axis of the winding 2 in the radial direction of the winding 2 than the outermost circle of the second winding layer 22. Since multiple stator modules are annularly connected by the stator yoke 11 to form an annular stator structure of the motor, in the radial direction of the motor, the space for accommodating the winding layer is proportional to the length from the motor rotation axis. In the radial direction of the motor, the first winding layer 21 is farther from the rotation axis of the motor than the second winding layer 22. The space for accommodating the first winding layer 21 between the stator modules is larger than the space for accommodating the second winding layer 22. Therefore, the outermost circle of the first winding layer 21 is farther from the winding axis of the winding 2 in the radial direction of the winding 2 than the outermost circle of the second winding layer 22. The number of turns of the first winding layer 21 is more than that of the second winding layer 22, which can improve the utilization rate of the stator module gap, increase the slot fill factor of the stator module, and improve the working efficiency of the motor.

[0069] In some embodiments, as Figure 3 shown, the first winding layer 21 is wound counterclockwise from the inside out, and the second winding layer 22 is wound clockwise from the inside out. The different winding directions of the first winding layer 21 and the second winding layer 22 can make the inclined section 23 located on the side of the winding 2 close to the stator tooth 12 and fit against the first side wall 12a of the stator tooth 12, enhancing the supporting effect of the stator tooth 12 on the winding 2, further ensuring the stability of the winding 2 during operation, and avoiding the phenomenon of falling off.

[0070] In some other embodiments, the first winding layer 21 is wound clockwise from the inside out, and the second winding layer 22 is wound counterclockwise from the inside out. Correspondingly, the advantages of the different winding directions of the first winding layer 21 and the second winding layer 22 described above also apply in this case. When the first winding layer 21 is wound clockwise and the second winding layer 22 is wound counterclockwise, the same advantages are achieved, and details are not repeated here.

[0071] In some embodiments, as Figure 4 shown, Figure 4 is a schematic structural diagram of a stator module provided by an embodiment of the present disclosure. The stator module may include multiple windings 2, and the distances between the multiple windings 2 and the stator yoke 11 are different; for any two adjacent windings 2, the fifth connection end 22a in the winding 2 close to the stator yoke 11 is connected to the third connection end 21a in the winding 2 far from the stator yoke 11.

[0072] The stator module adopts a structural form in which multiple windings 2 with a double-pancake structure are stacked, which can further increase the number of layers and turns of the windings 2, and improve the slot fill factor of the stator module and the working efficiency of the motor.

[0073] The present disclosure does not specifically limit the connection method between multiple windings 2. The specific connection method between multiple windings 2 is not shown in Figure 4 The fifth connection end 22a in the winding 2 close to the stator yoke 11 and the third connection end 21a in the winding 2 far from the stator yoke 11 can adopt direct connection methods such as welding and crimping, or indirect connection methods such as adding intermediate transition wires (for example: sleeves).

[0074] The outermost circle of the winding 2 close to the stator yoke 11 is farther from the winding axis of the winding 2 in the radial direction of the winding 2 than the outermost circle of the winding 2 far from the stator yoke 11. Since multiple stator modules are annularly connected through the stator yoke 11 to form an annular stator structure of the motor, in the radial direction of the motor, the space for accommodating the windings is proportional to the length from the rotation axis of the motor. In the radial direction of the motor, the winding 2 close to the stator yoke 11 is farther from the rotation axis of the motor than the winding 2 far from the stator yoke 11. The space for accommodating the winding 2 close to the stator yoke 11 between the stator modules is larger than the space for accommodating the winding 2 far from the stator yoke 11. Therefore, the outermost circle of the winding 2 close to the stator yoke 11 is farther from the winding axis of the winding 2 in the radial direction of the winding 2. The number of turns of the winding 2 close to the stator yoke 11 is more than that of the winding 2 far from the stator yoke 11, which can improve the utilization rate of the stator module gap, increase the slot fill factor of the stator module, and improve the working efficiency of the motor.

[0075] In some embodiments, the length of the stator teeth 12 in the axial direction of the winding 2 is greater than the sum of the lengths of all windings 2 in the axial direction of the winding 2. This can ensure that all windings 2 can be wound around the stator teeth 12, avoiding the situation where some windings 2 are in a suspended state, with low structural strength or some windings 2 having less contact with the stator teeth 12 and thus detaching.

[0076] In some embodiments, as Figure 5 shown, Figure 5 is a schematic cross-sectional view of a stator module provided by an embodiment of the present disclosure. The length of the stator teeth 12 in the axial direction of the winding 2 is equal to the sum of the lengths of all windings 2 in the axial direction of the winding 2. The stator module adopts a structural form of multiple windings 2 with a double-pancake structure. Increasing the number of turns of the coil can reduce the cross-sectional area of the wire 2a used for a single winding 2, reduce the structural gap between the first winding layer 21 and the second winding layer 22 in a single winding 2, reduce the structural gap between multiple windings 2, further increase the slot fill factor of the stator module, and thus improve the working efficiency and voltage level of the motor.

[0077] 2.5 flat wire

[0078] In some embodiments, as Figure 6 shown, Figure 6 FIG. 5 is a schematic cross-sectional view of a flat wire provided by an embodiment of the present disclosure. The winding 2 is a flat wire wound around the stator tooth 12, and the cross-sectional shape of the flat wire is rectangular. The winding axis of the flat wire is parallel to the motor axis, and the winding layer is wound in a plane perpendicular to the motor radial direction.

[0079] The flat wire can reduce the structural gap formed when the winding 2 is wound around the stator tooth 12, and improve the slot fill factor of the stator module; at the same time, the contact between the flat wires is surface contact, which increases the resistance cross-section of the winding 2, can reduce the thermal resistance, and alleviate the heating phenomenon of the stator module.

[0080] In some embodiments, the flat wire includes a wire 2a and an insulating layer 2b. The insulating layer 2b is located on the outer surface of the wire 2a and is in contact with the wire 2a.

[0081] The present disclosure does not specifically limit the material of the wire 2a, which can be matched and limited according to requirements such as the current, voltage, resistivity, and production cost of the winding 2, for example: copper wire, aluminum wire. The present disclosure does not specifically limit the shape and material of the insulating layer 2b. The shape of the insulating layer 2b is adapted to the shape of the wire 2a, and the material of the insulating layer 2b can be polyvinyl chloride (PVC), polypropylene (PP), silicone rubber, etc.

[0082] Different windings 2 in the present disclosure can use flat wires of the same specification or flat wires of different specifications, which can be selected differently according to factors such as the accommodation space and resistivity requirements of different windings.

[0083] III. Insulating Part 3

[0084] In some embodiments, as Figure 7 shown, Figure 7 FIG. 6 is a schematic structural view of an insulating member 3 provided by an embodiment of the present disclosure. The stator module may further include an insulating member 3. The insulating member 3 is located between the stator core 1 and the winding 2 and is connected to the stator core 1. The shape of the insulating member 3 is adapted to the shape of the stator tooth 12. The insulating member 3 can ensure the insulation between the stator core 1 and the winding 2, and prevent the insulating shell of the winding 2 from being damaged and the wire 2a from being exposed and directly contacting the stator tooth 12.

[0085] The present disclosure does not specifically limit the material of the insulating member 3, which can be selected according to the requirements for the insulation performance of the insulating member 3, for example: nylon material, plastic, etc.

[0086] Based on the same concept, an embodiment of the present disclosure further provides a motor. The motor may include a plurality of stator modules as described in any one of the above embodiments, as Figure 8 shown, Figure 8It is a schematic structural diagram of a spliced stator module provided by an embodiment of the present disclosure. The stator yokes 11 of multiple stator modules are annularly connected to form an annular stator structure of the motor.

[0087] The stator yoke 11 has a connection structure, and multiple stator yokes 11 can be connected through the connection structure. The present disclosure does not specifically limit the specific connection method and position of the connection structure. For example, the connection structure can be a snap connection structure, an embedded connection structure, a welding connection structure, etc.

[0088] The motor may further include a rotor module. The stator teeth 12 are tooth-shaped protrusions formed on the stator core 1 of the motor, and can cooperate with the rotor teeth of the rotor module to realize the magnetic field interaction between the rotor module and the stator module, generating torque to drive the rotation of the rotor module.

[0089] Correspondingly, the advantages of the above-mentioned stator module, including the motor with such a stator module, also have the same advantages, which will not be elaborated here.

[0090] Based on the same concept, an embodiment of the present disclosure further provides an electrical device, which may include a motor as described in any one of the above embodiments. Exemplarily, the electrical device may be a washing machine, a fan, a drill, an electric bicycle, etc.

[0091] Correspondingly, the advantages of the above-mentioned motor, including the electrical device with such a motor, also have the same advantages, which will not be elaborated here.

[0092] In the description of this specification, the description with reference to terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0093] It can be understood that "multiple" in the present disclosure means two or more, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0094] It can be further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0095] It can be further understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0096] It can be further understood that unless otherwise specified, "connection" and "coupling" include direct connection between the two without other components therebetween, and also include indirect connection between the two with other elements therebetween.

[0097] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all the operations shown to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0098] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the solutions disclosed herein. The present 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 well-known knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0099] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A stator module, characterized in that, the stator module includes a stator core (1) and a winding (2); the stator core (1) includes a stator yoke (11) and stator teeth (12), and the stator teeth (12) are connected to the stator yoke (11); the winding (2) includes a first winding layer (21), a second winding layer (22) and an inclined section (23), the distances from the first winding layer (21) and the second winding layer (22) to the stator yoke (11) are different, the first winding layer (21) and the second winding layer (22) are respectively wound around the stator teeth (12), the inclined section (23) is inclined from the first winding layer (21) to the second winding layer (22) and is respectively connected to the first winding layer (21) and the second winding layer (22), the position of the inclined section (23) corresponds to the first side wall (12a) of the stator teeth (12), and the length of the first side wall (12a) in the winding direction of the winding (2) is greater than that of the second side wall (12b) of the stator teeth (12).

2. The stator module according to claim 1, characterized in that, the inclined section (23) has a first connection end (23a) and a second connection end (23b), and the distance between the first connection end (23a) and the second connection end (23b) in the winding direction of the winding (2) is equal to the length of the first side wall (12a) in the winding direction of the winding (2).

3. The stator module according to claim 1, characterized in that, the first winding layer (21) is wound clockwise from the inside to the outside, and the second winding layer (22) is wound counterclockwise from the inside to the outside; or, the first winding layer (21) is wound counterclockwise from the inside to the outside, and the second winding layer (22) is wound clockwise from the inside to the outside.

4. The stator module according to claim 1, characterized in that, the first winding layer (21) has a third connection end (21a) and a fourth connection end (21b), the third connection end (21a) is located on the side of the first winding layer (21) away from the stator teeth (12), the fourth connection end (21b) is located on the side of the first winding layer (21) close to the stator teeth (12) and is connected to the inclined section (23); the second winding layer (22) has a fifth connection end (22a) and a sixth connection end (22b), the fifth connection end (22a) is located on the side of the second winding layer (22) away from the stator teeth (12), the sixth connection end (22b) is located on the side of the second winding layer (22) close to the stator teeth (12) and is connected to the inclined section (23).

5. The stator module according to claim 4, characterized in that, the stator module includes a plurality of the windings (2), and the distances between the plurality of the windings (2) and the stator yoke (11) are different; For any two adjacent windings (2), the fifth connection end (22a) in the winding (2) close to the stator yoke (11) is connected to the third connection end (21a) in the winding (2) far from the stator yoke (11).

6. The stator module according to claim 1, characterized in that the length of the stator teeth (12) in the axial direction of the winding (2) is greater than or equal to the sum of the lengths of all the windings (2) in the axial direction of the winding (2).

7. The stator module according to claim 1, characterized in that the winding (2) is a flat wire wound around the stator teeth (12), and the cross-sectional shape of the flat wire is rectangular.

8. The stator module according to claim 7, characterized in that the flat wire includes a conductor (2a) and an insulating layer (2b), and the insulating layer (2b) is located on the outer surface of the conductor (2a) and is in contact with the conductor (2a).

9. The stator module according to claim 1, characterized in that the stator module further includes an insulating member (3), and the insulating member (3) is located between the stator core (1) and the winding (2) and is connected to the stator core (1).

10. An electric motor, characterized in that it includes a plurality of stator modules as described in any one of claims 1 to 9 above, and the stator yokes (11) of the plurality of stator modules are connected in a ring.

11. An electrical equipment, characterized in that it includes the electric motor as described in claim 10.

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