Stators, motors, compressors and vehicles

Abstract

The present invention provides a stator, a motor, a compressor, and a vehicle. The stator comprises: a stator core, the stator core comprising a plurality of teeth distributed along the circumference of the stator core, with stator slots between adjacent teeth; windings wound around the teeth and extending into the stator slots; a first insulating member, at least a portion of which is located in the gap between the windings on the adjacent teeth, the first insulating member comprising a first insulating portion and a second insulating portion connected to each other, wherein within the same stator slot, the first insulating portion contacts one set of windings and the second insulating portion contacts another set of windings; and in a cross section perpendicular to the axial direction of the stator core, the length of the first insulating portion is greater than the length of the second insulating portion. The stator proposed by the present invention optimizes the first insulating member, i.e., optimizes the lengths of the first and second insulating portions, so that the stator has the characteristics of high insulation reliability, good fixability, ease of automated production, and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator, a motor, a compressor and a vehicle. Background Art

[0002] Currently, permanent magnet motors are widely used in applications such as air conditioners and automotive compressors. Driven by the dual constraints of increasing energy efficiency and functional requirements, the power density, efficiency, and reliability requirements for motors are gradually increasing. This gradual increase in motor power levels and reliability requirements also poses challenges to the insulation performance of motor stators. When concentrated windings are used in the stator, the stator slot area is fully utilized to increase motor power density. The gap between the copper wires wound on the two teeth in a single stator slot is relatively small. To ensure electrical safety, phase insulation is required to separate the windings on different teeth in the same slot. This ensures the insulation performance of the motor and prevents electrical faults such as winding burnout due to insulation breakdown during live operation, thereby ensuring motor reliability.

[0003] In the prior art, one phase insulation structure results in asymmetric stator slot areas on both sides, resulting in wasted slot area and two bends, which reduces automation simplicity and reliability. Another motor insulation structure integrates slot insulation and phase insulation, but this adds the step of cutting the insulation film during the ring-shaped formation of the split stator core, resulting in a complex insulation shape and increasing the difficulty of merging the split cores into a circle. Furthermore, if the phase insulation is improperly sized or damaged or detached, the creepage distance between the winding phases will be insufficient, posing a risk of phase-to-phase faults once the motor is operating under load. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a stator.

[0006] A second aspect of the present invention further provides a motor.

[0007] The third aspect of the present invention also provides a compressor.

[0008] A fourth aspect of the present invention also provides a vehicle.

[0009] In view of this, a first aspect of the present invention provides a stator, comprising: a stator core, the stator core including a plurality of teeth, the plurality of teeth being distributed along the circumference of the stator core, with a stator slot being provided between two adjacent teeth; a winding wound around the teeth and extending into the stator slot; a first insulating member, at least a portion of the first insulating member being located in the gap between the windings on two adjacent teeth, the first insulating member including a first insulating portion and a second insulating portion connected to each other, wherein in the same stator slot, the first insulating portion contacts one group of windings, and the second insulating portion contacts another group of windings; in a cross section perpendicular to the axial direction of the stator core, the length of the first insulating portion is greater than the length of the second insulating portion.

[0010] The stator provided by the present invention includes a stator core, a winding and a first insulating member. The stator core includes a plurality of teeth, and the plurality of teeth are distributed along the circumference of the stator core, and a stator slot is formed between two adjacent teeth. The winding is wound on the teeth and located in the stator slot. In addition, a first insulating member is provided to be inserted in the gap between the windings on two adjacent teeth, and at least part of the first insulating member is located in the gap between the windings on two adjacent teeth, so that the windings in the stator slot can be effectively physically isolated to ensure insulation reliability. Specifically, the first insulating member includes a first insulating portion and a second insulating portion, wherein the first insulating portion and the second insulating portion are connected, and in a cross section perpendicular to the axial direction of the stator core, the length of the first insulating portion is greater than the length of the second insulating portion, that is, when the first insulating member is folded, the length of the first insulating portion after folding is greater than the length of the second insulating portion after folding. Compared with the symmetrical structure with the same length on both sides in the prior art, the material usage of the first insulating member can be reduced, thereby reducing material costs. Moreover, within the same stator slot, the first insulating portion contacts one group of windings, and the second insulating portion contacts another group of windings, that is, the first insulating member simultaneously connects two adjacent groups of windings. In this way, the first insulating member clings to the two adjacent groups of windings through the elastic force formed by its own bending, thereby enhancing the fixing effect. This effectively solves the problem of insulation shedding that occurs when only a single sheet of insulating paper is used for phase isolation in the prior art, and enhances the fixing effect of the first insulating member while ensuring the insulation reliability of the first insulating member.

[0011] More specifically, during the insertion of the first insulating member into the gap between the windings on two adjacent teeth, at least a portion of the first insulating member is located in the gap between the windings on the two adjacent teeth, thereby isolating and insulating adjacent windings within the stator slots. Furthermore, the first insulating member includes a first insulating portion and a second insulating portion, and when the first insulating member is folded in half, the length of the first insulating portion is greater than the length of the second insulating portion. This allows the first insulating member to form a spring structure after folding itself. Thus, within the same stator slot, the folded first insulating member can cling tightly to two adjacent windings for support and fixation, improving insulation reliability during motor operation and its positional stability within the stator slot. This solves the problem in the prior art where improperly sized first insulating members, or when the first insulating member is damaged or detached, can lead to insufficient creepage distances between winding phases, thereby causing risks associated with motor load operation. Furthermore, the length of the folded first insulating portion is greater than the length of the folded second insulating portion, resulting in reduced material consumption, low material costs, a simple design, ease of production, and low production costs. In addition, the first insulating member is made of polyphenylene sulfide (PPS), which has good insulation effect, high temperature resistance, and good compatibility with the working environment.

[0012] Therefore, the stator proposed in the present invention optimizes the first insulating member, that is, optimizes the lengths of the first insulating portion and the second insulating portion, so that the stator has the characteristics of high insulation reliability, good fixation, easy automated production and low cost.

[0013] The stator provided by the present invention may also have the following additional technical features:

[0014] In the above technical solution, further, it also includes: a second insulating member, which is arranged in the stator slot, at least part of the second insulating member extends along the slot wall of the stator slot, and at least part of the winding is connected to the tooth portion through the second insulating member.

[0015] In this technical solution, the stator also includes a second insulating member. The second insulating member is disposed within the stator slot, extending along the slot wall of the stator slot, and the winding is connected to the teeth via the second insulating member. Specifically, the second insulating member is disposed along the inner wall of the stator slot, and the winding is connected to the teeth via the second insulating member. This facilitates the insertion of the first insulating member axially inward into the stator slot defined by two adjacent cores, thereby physically isolating the winding within the stator slot and improving the insulation reliability of the first insulating member during use.

[0016] In specific applications, the first insulating member is phase insulation and the second insulating member is slot insulation. It can be understood that windings of different phases are wound on two adjacent teeth. Phase insulation is arranged between windings of different phases on two adjacent teeth to insulate windings of different phases. Slot insulation is to insulate the inner wall surface of the stator slot, so that the winding is wound on the tooth through the slot insulation, which plays an insulating role.

[0017] In any of the above technical solutions, further, the second insulating part includes a protrusion, the second insulating part and the protrusion are located on the same side of the first insulating part, and the first insulating part is connected to the protrusion; in a cross section perpendicular to the axial direction of the stator core, the length of the first insulating part is H1, the length of the second insulating part is H2, the height of the protrusion is H3, and the difference between H1 and H2 is greater than H3.

[0018] In this technical solution, the second insulating member includes a raised portion. The raised portion and the second insulating member are disposed on the same side of the first insulating member, and the first insulating member is connected to the raised portion. The difference between the lengths of the first insulating member and the second insulating member is greater than the height of the raised portion. In other words, the sum of the lengths of the second insulating member and the raised portion is less than the length of the first insulating member. This prevents interference between the second insulating member and the raised portion when the first insulating member is installed in the stator slot, ensuring reliable assembly.

[0019] In a specific application, when assembling the stator, the second insulating member is first installed in the stator slot, and then the first insulating member is inserted into the stator slot. The above-mentioned size setting can avoid interference between the first insulating member and the second insulating member.

[0020] Furthermore, the first insulating portion and the second insulating portion of the first insulating member are respectively located on both sides of the raised portion of the second insulating member. Since the lengths of the first insulating portion and the second insulating portion after being folded are different, that is, the length of the first insulating portion after being folded is greater than the length of the second insulating portion after being folded, when the first insulating portion is in contact and connected with the raised portion, the second insulating portion cannot be in contact and connected with the raised portion. In this way, three insulating layers of the first insulating portion and the raised portion are formed between adjacent windings at the bottom of the stator slot, thereby effectively improving the insulation reliability between the windings.

[0021] Specifically, in a cross section perpendicular to the axial direction of the stator core, the heights of the first insulating portion, the second insulating portion, and the raised portion are respectively set to H1, H2, and H3, and the difference between H1 and H2 is greater than H3. On the one hand, during the insertion of the first insulating member into the stator slot, the length of the folded first insulating portion is set to be greater than the length of the folded second insulating portion, and the difference between the lengths of the first insulating portion and the second insulating portion is greater than the height of the raised portion. This prevents interference between the second insulating portion and the raised portion when the first insulating member is inserted into the stator slot, thereby improving assembly efficiency. On the other hand, the length of the folded first insulating portion is greater than the length of the folded second insulating portion. When the first insulating portion contacts and connects with the raised portion, the second insulating portion cannot contact and connect with the raised portion. This results in three layers of insulation, the first insulating portion and the raised portion, formed between adjacent windings at the bottom of the stator slot, further improving the insulation reliability of the first insulating member between the windings.

[0022] In any of the above technical solutions, further, an insulating frame is provided at both ends of the stator core along the axial direction of the stator core, and the winding is wound on the teeth covered by the insulating frame and the second insulating member.

[0023] In this technical solution, an insulating frame is placed at both ends of the stator core along its axis. Windings are wound around the insulating frame and the teeth covered by the second insulating member. This creates a stator operating area within the stator slots, where the windings are wound. Furthermore, the first insulating member is inserted into the gap between the windings on adjacent teeth, physically isolating the windings within the stator slots and improving insulation reliability during motor operation.

[0024] At the same time, the first insulating member and the second insulating member effectively isolate the windings in the stator slots, and the insulating frames arranged at both ends of the stator core further isolate the windings at the ends of the stator core, thereby improving the reliability of the connection between the windings and the stator core.

[0025] In a specific application, the insulating frame is made of insulating material.

[0026] In any of the above technical solutions, further, a folding position is provided on the first insulating member, and the first insulating member has at least a first state and a second state; in the first state, the first insulating member is unfolded, and the first insulating part and the second insulating part are arranged adjacent to each other; in the second state, the first insulating member is folded along the folding position so that the first insulating part and the second insulating part are arranged relative to each other.

[0027] In this technical solution, a folding position is provided on the first insulating member, and the first insulating member has at least a first state and a second state. That is, the first insulating member can be unfolded or folded according to the folding position, so that the first insulating member can be unfolded in the first state and folded in the second state. The provision of the folding position enables the first insulating member to fold according to the folding position when folded by other equipment, thereby ensuring the length dimensions of the first insulating portion and the second insulating portion, improving the reliability of the structure formed after the first insulating member is folded, and further ensuring the assembly of the first and second insulating portions, and improving the insulation effect of the first and second insulating portions.

[0028] Specifically, the first insulating member can be configured to change its state during use according to specific requirements. In the first state, the first insulating member is unfolded, with the first and second insulating portions positioned adjacent to each other, i.e., they are connected and coplanar. In this configuration, the first and second insulating portions form an "I" shape. In the second state, the first and second insulating portions are positioned opposite each other, i.e., they form a "U" shape. By configuring the first insulating member to have at least a first and second state, the configuration of the first insulating member can be changed according to assembly requirements, improving its adaptability. Furthermore, in the second state, the elastic force generated by the bending of the first insulating member itself allows the first and second insulating portions to adhere closely to the two adjacent windings when the first insulating member is inserted into the gap between the windings on two adjacent teeth, providing a secure and supportive connection. This eliminates the possibility of insulation loss that can occur when using only a single insulating member for phase isolation, further improving the insulation reliability of the first insulating member between the windings.

[0029] In any of the above technical solutions, further, along the axial direction of the stator core, a convex portion is provided at the first end of the first insulating member, and the first insulating member is extended into the stator slot by grasping the convex portion.

[0030] In this technical solution, a protrusion is provided on the first end of the first insulating member along the axial direction of the stator core to facilitate the gripping of the first insulating member by the equipment tooling, thereby achieving precise insertion of the first insulating member into the stator slot.

[0031] Specifically, during the process of inserting the first insulating member into the gap between the windings on two adjacent teeth, the equipment tooling grasps the first insulating member and inserts it into the stator slot. Therefore, the provision of a protrusion at the first end of the first insulating member along the axis of the stator core facilitates the equipment tooling's secure grasp of the first insulating member, enabling precise insertion and further improving the equipment's automation capabilities.

[0032] In any of the above technical solutions, further, along the axial direction of the stator core, the length of the stator core is L1, the difference between the length of the first insulating member and the length of the protrusion is L2, and L2 minus L1 is greater than or equal to 7 mm.

[0033] In this technical solution, along the axial direction of the stator core, the length of the stator core is set to L1, the length of the first insulating member excluding the first end protrusion is set to L2, and the length difference between L2 and L1 is set to be greater than or equal to 7 mm. When the first insulating member is installed in the stator slot, on the one hand, at least a portion of the protrusion can be made to protrude from the stator core to facilitate the assembly and disassembly of the first insulating member. On the other hand, the size of the portion of the first insulating member arranged in the stator slot can be ensured, so that the size of the first insulating member arranged in the stator slot can be greater than or equal to the size of the stator slot, thereby ensuring the insulation effect of the first insulating member on adjacent windings, thereby enhancing the reliability of the insulation between the windings at the end of the stator slot.

[0034] Specifically, during the operation of the stator, the process dimensions determined by the height of the windings at the end of the stator slots are taken into consideration. That is, while ensuring the insulation performance of the straight segments of the windings adjacent to each other in the stator slots, insulation breakdown between the end windings is prevented. Therefore, the length difference between L2 and L1 is set to be greater than or equal to 7 mm, which effectively avoids insulation breakdown between the end windings and enhances insulation reliability.

[0035] In any of the above technical solutions, further, in the first state, the convex portion is trapezoidal, the upper base of the convex portion is L3, the lower base of the convex portion is L4, and the difference between L4 and L3 is greater than or equal to 1 mm.

[0036] In this technical solution, when the first insulating member is in its first state (i.e., flat), the convex portion at the first end of the first insulating member is trapezoidal. The upper and lower bases of the convex portion are L3 and L4, respectively, and the difference between L4 and L3 is greater than or equal to 1 mm. This facilitates gripping of the first insulating member by the equipment tooling and enables precise insertion of the first insulating member into the stator slot.

[0037] Specifically, during the insertion of the first insulator into the gap between the windings on two adjacent teeth—that is, during the insertion of the first insulator into the stator slot—the equipment tooling grasps the first insulator and inserts it into the stator slot. Therefore, when the first insulator is in the first state, the upper and lower bases of the protrusion are set to L3 and L4, respectively, and the difference between L4 and L3 is set to be greater than or equal to 1mm. This facilitates the equipment tooling's secure grasp of the first insulator, enabling precise insertion and improving the equipment's automation capabilities.

[0038] Specifically, the difference between L4 and L3 is greater than or equal to 1 mm and less than or equal to 10 mm. Furthermore, the difference between L4 and L3 is greater than or equal to 2 mm and less than or equal to 5 mm.

[0039] In any of the above technical solutions, further, the height of the protrusion is greater than or equal to 2.5 mm and less than or equal to 15 mm.

[0040] In this technical solution, by setting the height of the protrusion of the first insulating member within a certain range, it is beneficial to improve the operability of the equipment tooling grasping operation and further improve the efficiency of the equipment tooling grasping operation.

[0041] Specifically, during the insertion of the first insulator into the stator slot, the first insulator is gripped by the equipment tooling. If the protrusion of the first insulator is set too short, the tooling's gripping operation will be affected. Therefore, setting the protrusion height between 2.5 mm and 15 mm maximizes gripping efficiency and automation. The specific height of the protrusion can be determined based on actual process conditions.

[0042] In a specific application, the height of the protrusion is greater than or equal to 5 mm and less than or equal to 10 mm. Further, the height of the protrusion is 6 mm, 7 mm, 8 mm or 9 mm.

[0043] In any of the above technical solutions, further, along the axial direction of the stator core, a concave portion is provided at the second end of the first insulating member, and the concave portion is arranged opposite to the convex portion.

[0044] In this technical solution, a recess is provided at the second end of the first insulating member along the axial direction of the stator core. The protrusion and recess are arranged opposite each other. Specifically, the first insulating member includes a trapezoidal protrusion at one axial end and a trapezoidal recess with the same shape and dimensions as the protrusion at the other axial end. The protrusion facilitates gripping of the first insulating member by the equipment tooling, while the recess prevents collision and interference between the first insulating member and the insulating frame when inserted into the stator slot. This allows for precise insertion of the first insulating member into the stator slot, further improving the automation capabilities of the equipment.

[0045] In any of the above technical solutions, further, the center lines of the concave portion and the convex portion coincide with each other.

[0046] In this technical solution, by arranging the center lines of the convex and concave parts of the first insulating member to coincide with each other, the convex and concave parts can be folded along the center line during the folding process of the first insulating member, thereby ensuring the overall straightness of the first insulating member, thereby improving the smoothness and accuracy of the first insulating member in the process of inserting it into the stator slot along the axial direction.

[0047] In any of the above technical solutions, further, the concave portion and the convex portion have the same shape.

[0048] In this technical solution, the convex and concave portions of the first insulating member are configured to have identical shapes, further ensuring that their centerlines coincide. This allows them to fold in half along their centerlines, thereby improving the smoothness and accuracy of the axial insertion of the first insulating member into the stator slot. Furthermore, the identical shapes of the convex and concave portions simplify the structure, making it easier to manufacture and process, and effectively reducing production costs.

[0049] In any of the above technical solutions, further, it also includes: a transition section, the first insulating part and the second insulating part are connected through the transition section, and the folding position is provided in the transition section.

[0050] In this technical solution, the first insulating member also includes a transition section. The transition section connects the first and second insulating portions, forming a single unit. The transition section also includes a folding portion. The first and second insulating portions can be folded in half along the folding portion, so that the length of the folded first insulating portion is greater than the length of the folded second insulating portion. Compared to symmetrical structures with equal lengths on both sides in the prior art, this reduces the material usage and material costs of the first insulating member. Furthermore, because the first and second insulating portions are folded in half along the folding portion, an arcuate transition section is formed at the junction of the folded portions, i.e., the transition section forms a "U" shape when the first insulating member is folded in half along the folding portion. After folding, the first insulating member bends, creating a supporting elastic force between the first and second insulating portions. When the first insulating member is inserted into the gap between the windings on two adjacent teeth, the first and second insulating portions can be held in close contact with the two adjacent windings through its own elastic force, thereby enhancing the fixing effect and improving insulation reliability.

[0051] In any of the above technical solutions, further, there are multiple stator slots, and a first insulating member is provided in at least some of the stator slots.

[0052] In this technical solution, by providing a plurality of first insulating members, at least a portion of the stator slots includes a first insulating member, thereby physically isolating the windings in the stator slots and ensuring insulation reliability.

[0053] Specifically, the number of stator slots can be set to be equal to the number of first insulating members. This allows the first insulating members to insulate and isolate the windings within all stator slots, effectively improving the insulation reliability of the motor during operation. For example, in this technical solution, the number of stator slots is set to 12, and the number of first insulating members is set to 12, i.e., the number of stator slots is equal to the number of first insulating members. This ensures that each stator slot contains a first insulating member, achieving optimal insulation isolation within the stator slot and ensuring insulation reliability.

[0054] Of course, the number of first insulating members may also be less than the number of stator slots.

[0055] In any of the above technical solutions, further, the thickness of the first insulating member is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0056] In this technical solution, the thickness of the first insulating member is set between 0.25mm and 0.3mm, that is, the thickness of the first and second insulating portions is set to be greater than or equal to 0.25mm and less than or equal to 0.3mm, to ensure that the insulation withstand voltage requirements between adjacent windings in the stator slots are met. Furthermore, setting a thickness range for the first insulating member can, on the one hand, prevent insulation breakdown between adjacent windings and enhance insulation reliability; on the other hand, setting a thickness range for the first insulating member can enhance the elastic force of the folded first insulating member, that is, the supporting elastic force between the first and second insulating portions. Consequently, when the first insulating member is inserted into the gap between the windings on two adjacent teeth, its own elastic force can cling tightly to the two sets of adjacent windings, enhancing the fixing effect and thus improving insulation reliability.

[0057] In any of the above technical solutions, further, the stator core includes a plurality of segmented cores, and the plurality of segmented cores are connected in sequence along the circumferential direction of the stator core.

[0058] In this technical solution, the stator core includes multiple segmented cores. These segmented cores are sequentially connected along the circumference of the stator core, defining stator slots between adjacent stator cores. The stator slots are then arranged circumferentially along the axis of the stator core. Windings are wound around the teeth and located within the stator slots. Furthermore, first insulating members are also arranged circumferentially along the motor and inserted into the corresponding stator slots, physically isolating the windings within the stator slots and ensuring insulation reliability.

[0059] Furthermore, the stator core includes multiple block cores. When winding, the winding can be wound on each block core separately. When all the block cores are wound, the multiple block cores are combined into a circle. This setting method effectively improves the slot fill rate of the stator.

[0060] In any of the above technical solutions, further, any segmented iron core includes a plurality of punching sheets, and the plurality of punching sheets are stacked and distributed along the axial direction of the stator iron core.

[0061] In this technical solution, each segmented iron core is provided with a plurality of punching sheets, and the plurality of punching sheets are stacked and distributed along the axial direction of the stator iron core, so that the overlapping portion is formed at the circumferential edge of the punching sheet. When the plurality of punching sheets are stacked and distributed along the axial direction of the iron core, overlapping gaps are defined between adjacent punching sheets and formed in the stator slots, so that the winding is conveniently wound on the tooth portion and located in the stator slot. When the first insulating member is inserted into the gap between the windings on two adjacent teeth, the windings in the stator slots are effectively physically isolated to ensure insulation reliability.

[0062] Specifically, the punching sheets are silicon steel sheets.

[0063] In any of the above technical solutions, further, in the same segmented iron core, the multiple punching sheets include overlapping first-type punching sheets and second-type punching sheets; along the circumference of the stator iron core, the first side of the first-type punching sheet is provided with an overlapping portion, and the second side of the first-type punching sheet is provided with a notch portion; the second side of the second-type punching sheet is provided with an overlapping portion, and the first side of the second-type punching sheet is provided with a notch portion; in the axial direction of the stator iron core, two adjacent overlapping portions are located on both sides of the notch portion and enclose a gap, and in two adjacent segmented iron cores, the overlapping portion of one segmented iron core is inserted into the gap of the other segmented iron core.

[0064] In this technical solution, the plurality of punching sheets include first-class punching sheets and second-class punching sheets, and the plurality of first-class punching sheets and the plurality of second-class punching sheets are alternately distributed along the axial direction of the stator core. Specifically, along the circumferential direction of the stator core, an overlapping portion is provided on the first side of the first-class punching sheet, and a notch portion is provided on the second side of the first-class punching sheet; at the same time, a notch portion is provided on the first side of the second-class punching sheet, and an overlapping portion is provided on the second side of the second-class punching sheet. In this way, in the axial direction of the stator core, on both sides of the notch portion, two adjacent overlapping portions can enclose a gap, so that in two adjacent segmented cores, the overlapping portion of one segmented core is inserted into the gap of the other segmented core, further improving the slot fill rate of the stator.

[0065] Specifically, when the first type of punching sheets and multiple second type of punching sheets are alternately distributed along the axial direction of the stator core, the overlapping portions of two adjacent first type of punching sheets have a gap between the first side, and the notch portion of the second type of punching sheet directly between the two first type of punching sheets defines an overlapping gap on the first side. Correspondingly, the overlapping portions of two adjacent second type of punching sheets have a gap between the second side, and the notch portion of the first type of punching sheet directly between the two second type of punching sheets defines an overlapping gap on the first side. In this way, the purpose of improving the slot fill rate of the stator can be achieved by inserting the overlapping portion of one segmented core into the gap of another segmented core. At the same time, after all the segmented cores are inserted, the multiple segmented cores are combined into a circle, which can further improve the slot fill rate of the stator, thereby improving the motor power during motor operation.

[0066] A second aspect of the present invention provides a motor, comprising: a stator as described in the first aspect of the present invention; and a rotor, which cooperates with the stator and rotates.

[0067] The motor proposed in the present invention includes the stator according to the first aspect of the present invention, and therefore has all the beneficial effects of the above-mentioned stator, which will not be discussed here one by one.

[0068] In addition, the motor also includes a rotor, which is arranged inside the stator and can cooperate with the stator to rotate and output torque.

[0069] A third aspect of the present invention provides a compressor, comprising: the stator according to the first aspect of the present invention; or the motor according to the second aspect of the present invention.

[0070] The compressor proposed in the present invention includes the stator of the first aspect of the present invention, or the motor of the second aspect of the present invention, and therefore, also has all the beneficial effects of the above-mentioned stator, which will not be discussed here one by one.

[0071] A fourth aspect of the present invention provides a vehicle comprising: the compressor according to the third aspect of the present invention.

[0072] The vehicle proposed in the present invention includes the compressor according to the third aspect of the present invention, and therefore also has all the beneficial effects of the above-mentioned compressors, which will not be discussed here one by one.

[0073] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0075] Figure 1 1 is a schematic structural diagram of a stator according to an embodiment of the present invention;

[0076] Figure 2 for Figure 1 a top view of the stator of the illustrated embodiment;

[0077] Figure 3 for Figure 1 A schematic diagram of a partial structure of a stator of the illustrated embodiment;

[0078] Figure 4 for Figure 1 A schematic structural diagram of the first insulating member of the illustrated embodiment;

[0079] Figure 5 for Figure 4 A schematic diagram of the folded state (second state) of the first insulating member of the illustrated embodiment;

[0080] Figure 6 for Figure 1 A schematic diagram of the assembly structure of the first insulating member and the second insulating member of the illustrated embodiment;

[0081] Figure 7 for Figure 4 A schematic diagram of the first insulating member of the illustrated embodiment in an expanded state (first state);

[0082] Figure 8 A schematic diagram of a stator core according to an embodiment of the present invention is shown.

[0083] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names is as follows:

[0084] 100 stator, 110 stator core, 1102 segmented core, 1104 overlapping portion, 120 winding, 130 first insulating member, 1310 first insulating portion, 1320 second insulating portion, 1312 convex portion, 1314 concave portion, 1330 transition section, 140 second insulating member, 1402 convex portion, 150 insulating frame. DETAILED DESCRIPTION

[0085] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0086] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0087] Refer to the following Figures 1 to 8 A stator 100 , a motor, a compressor, and a vehicle according to some embodiments of the present invention are described.

[0088] like Figure 1 As shown, the first embodiment of the present invention provides a stator 100 including a stator core 110 , a winding 120 and a first insulating member 130 .

[0089] Among them, such as Figure 1 and Figure 2As shown, the stator core 110 includes a plurality of teeth distributed along the circumference of the stator core 110. Stator slots are formed between adjacent teeth. Windings 120 are wound around the teeth and located within the stator slots. Furthermore, a first insulating member 130 is inserted into the gap between the windings 120 on two adjacent teeth, with at least a portion of the first insulating member 130 located in the gap between the windings 120 on two adjacent teeth. This effectively physically isolates the windings 120 within the stator slots, ensuring insulation reliability.

[0090] Specifically, if Figures 1 to 5 As shown, the first insulating member 130 includes a first insulating portion 1310 and a second insulating portion 1320, wherein the first insulating portion 1310 and the second insulating portion 1320 are connected, and in a cross section perpendicular to the axial direction of the stator core 110, the length of the first insulating portion 1310 is greater than the length of the second insulating portion 1320, that is, when the first insulating member 130 is in a folded state, the length of the first insulating portion 1310 after folding is greater than the length of the second insulating portion 1320 after folding. Compared with the symmetrical structure with the same length on both sides in the prior art, the material usage of the first insulating member 130 can be reduced, thereby reducing material costs. Moreover, within the same stator slot, the first insulating portion 1310 contacts one group of windings 120, and the second insulating portion 1320 contacts another group of windings 120, that is, the first insulating member 130 simultaneously connects two adjacent groups of windings 120. In this way, the first insulating member 130 is tightly attached to the two adjacent groups of windings 120 through the elastic force formed by its own bending, thereby enhancing the fixing effect and effectively solving the problem of insulation shedding when only a single sheet of insulating paper is used for phase isolation in the prior art. While ensuring the insulation reliability of the first insulating member 130, the fixing effect of the first insulating member 130 is enhanced.

[0091] More specifically, if Figure 1 and Figure 5As shown, during the process of inserting the first insulating member 130 into the gap between the windings 120 on two adjacent teeth, at least a portion of the first insulating member 130 is located in the gap between the windings 120 on the two adjacent teeth, thereby isolating and insulating the adjacent windings 120 within the stator slot. Furthermore, the first insulating member 130 is configured to include a first insulating portion 1310 and a second insulating portion 1320 that are connected to each other. When the first insulating member 130 is folded in half, the length of the folded first insulating portion 1310 is greater than the length of the folded second insulating portion 1320. This allows the first insulating member 130 to form a spring structure after folding itself. Thus, within the same stator slot, the folded first insulating member 130 can cling tightly to and support two adjacent windings 120, thereby improving insulation reliability during motor operation and its positional stability within the stator slot. This solves the problem in the prior art where improperly sized first insulating member 130, or when damaged or detached, leads to insufficient creepage distance between phases of winding 120, which in turn can lead to risks in motor load operation. Furthermore, the length of the folded first insulating portion 1310 is greater than the length of the folded second insulating portion 1320. This reduces material usage, reduces material costs, and provides a simple design, ease of production, and low production costs. Furthermore, the first insulating member 130 is made of polyphenylene sulfide (PPS), which offers excellent insulation, high-temperature resistance, and compatibility with the operating environment.

[0092] like Figure 4 and Figure 5 As shown, therefore, the stator 100 proposed in the present invention optimizes the first insulating member 130, that is, optimizes the lengths of the first insulating portion 1310 and the second insulating portion 1320, so that it has the characteristics of high insulation reliability, good fixation, easy automated production and low cost.

[0093] The second embodiment of the present invention provides a stator 100, which further comprises:

[0094] like Figure 1 As shown, the stator 100 further includes a second insulating member 140. The second insulating member 140 is disposed within the stator slot, extending along the slot wall of the stator slot. The winding 120 is connected to the teeth via the second insulating member 140. Specifically, the second insulating member 140 is disposed along the inner wall of the stator slot, and the winding 120 is connected to the teeth via the second insulating member 140. This facilitates the insertion of the first insulating member 130 axially inwardly into the stator slot defined by two adjacent cores, thereby physically isolating the winding 120 within the stator slot and improving the insulation reliability of the first insulating member 130 during use.

[0095] In a specific application, the first insulating member 130 is phase insulation and the second insulating member 140 is slot insulation. It can be understood that windings 120 of different phases are wound on two adjacent teeth. Phase insulation is arranged between windings 120 of different phases on two adjacent teeth to insulate the windings 120 of different phases. Slot insulation is to insulate the inner wall surface of the stator slot, so that the winding 120 is wound on the tooth through slot insulation, thereby playing an insulating role.

[0096] In this embodiment, further, Figure 6 As shown, the second insulating member 140 includes a protrusion 1402 . The protrusion 1402 and the second insulating portion 1320 are disposed on the same side of the first insulating portion 1310 , and the first insulating portion 1310 is connected to the protrusion 1402 .

[0097] Among them, Figure 6 As shown, the difference between the length of the first insulating portion 1310 and the length of the second insulating portion 1320 is greater than the height of the protrusion 1402, that is, the sum of the length of the second insulating portion 1320 and the length of the protrusion 1402 is less than the first insulating portion 1310. In this way, when the first insulating member 130 is installed in the stator slot, the above-mentioned length setting avoids interference between the second insulating portion 1320 and the protrusion 1402, thereby ensuring assembly reliability.

[0098] In a specific application, when assembling the stator 100 , the second insulating member 140 is first installed in the stator slot, and then the first insulating member 130 is inserted into the stator slot. The above-mentioned size setting can avoid interference between the first insulating member 130 and the second insulating member 140 .

[0099] Furthermore, the first insulating portion 1310 and the second insulating portion 1320 of the first insulating member 130 are respectively located on both sides of the raised portion 1402 of the second insulating member 140. Since the lengths of the first insulating portion 1310 and the second insulating portion 1320 after being folded are different, that is, the length of the first insulating portion 1310 after being folded is greater than the length of the second insulating portion 1320 after being folded, when the first insulating portion 1310 is in contact and connected with the raised portion 1402, the second insulating portion 1320 cannot be in contact and connected with the raised portion 1402. In this way, the first insulating portion 1310 and the raised portion 1402 are formed between the adjacent windings 120 at the bottom of the stator slot. These three insulating layers effectively improve the insulation reliability between the windings 120.

[0100] Specifically, if Figure 1 and Figure 6As shown, on a cross section perpendicular to the axial direction of the stator core 110, by setting the heights of the first insulating portion 1310, the second insulating portion 1320, and the protrusion 1402 to H1, H2, and H3, respectively, and the difference between H1 and H2 is greater than H3, on the one hand, during the insertion of the first insulating member 130 into the stator slot, the length of the first insulating portion 1310 after folding is greater than the length of the second insulating portion 1320 after folding, and the difference between the length of the first insulating portion 1310 and the length of the second insulating portion 1320 is greater than the height of the protrusion 1402. In this way, when the first insulating member 130 is inserted into the stator slot, interference between the second insulating portion 1320 and the protrusion 1402 is avoided, thereby improving assembly efficiency. On the other hand, the length of the first insulating portion 1310 after folding is greater than the length of the second insulating portion 1320 after folding. When the first insulating portion 1310 is in contact and connected with the protrusion 1402, the second insulating portion 1320 cannot be in contact and connected with the protrusion 1402. In this way, the first insulating portion 1310 and the protrusion 1402 are formed between the adjacent windings 120 at the bottom of the stator slot. These three insulating layers further improve the insulation reliability of the first insulating member 130 between the windings 120.

[0101] In this embodiment, further, Figure 1 and Figure 3 As shown, along the axis of the stator core 110, an insulating frame 150 is disposed at both ends of the stator core 110. The windings 120 are wound around the teeth covered by the insulating frame 150 and the second insulating member 140. This winding 120 forms an operating area for the stator 100, located within the stator slots. Furthermore, the first insulating member 130, inserted in the gap between the windings 120 on two adjacent teeth, physically isolates the windings 120 within the stator slots, improving insulation reliability during motor operation.

[0102] At the same time, the first insulating member 130 and the second insulating member 140 effectively isolate the winding 120 in the stator slot, and the insulating frame 150 arranged at both ends of the stator core 110 further isolates the winding 120 at the end of the stator core 110, thereby improving the reliability of the connection between the winding 120 and the stator core 110.

[0103] In a specific application, the insulating frame 150 is made of insulating material.

[0104] The third embodiment of the present invention provides a stator 100, which further comprises:

[0105] like Figures 4 to 7As shown, a folding position is provided on the first insulating member 130, and the first insulating member 130 has at least a first state and a second state. That is, the first insulating member 130 can be unfolded or folded according to the folding position, so that the first insulating member 130 is unfolded in the first state and folded in the second state. The provision of the folding position enables the first insulating member 130 to be folded according to the folding position when folded by other equipment, thereby ensuring the length of the first insulating portion 1310 and the second insulating portion 1320, improving the reliability of the structure formed after the first insulating member 130 is folded, and further ensuring the assembly of the first insulating member 130 and the second insulating member 140, thereby improving the insulation effect of the first insulating member 130 and the second insulating member 140.

[0106] Specifically, if Figure 4 、 Figure 5 and Figure 7 As shown, during the use of the first insulating member 130, the use state of the first insulating member 130 can be changed according to the use requirements. In the first state, the first insulating member 130 is unfolded, and the first insulating part 1310 and the second insulating part 1320 are arranged adjacent to each other, that is, the first insulating part 1310 and the second insulating part 1320 are connected and in the same plane. At this time, the first insulating part 1310 and the second insulating part 1320 are arranged in an "I" shape as a whole. In the second state, the first insulating part 1310 and the second insulating part 1320 are arranged relative to each other, that is, the first insulating part 1310 and the second insulating part 1320 are arranged in a "U" shape as a whole. By setting the first insulating member 130 to have at least a first state and a second state, the use form of the first insulating member 130 can be changed according to assembly requirements, thereby improving the adaptability of use. At the same time, when the first insulating member 130 is in the second state, the elastic force formed by the bending of the first insulating member 130 itself enables the first insulating portion 1310 and the second insulating portion 1320 to be tightly attached to the two adjacent groups of windings 120 respectively when the first insulating member 130 is inserted into the gap between the windings 120 on two adjacent teeth, thereby playing a fixed supporting role, eliminating the possibility of insulation falling off when only a single insulating member is used for phase isolation, and further improving the insulation reliability of the first insulating member 130 between the windings 120.

[0107] In this embodiment, further, Figure 1 and Figure 4 As shown, along the axial direction of the stator core 110 , a protrusion 1312 is provided at the first end of the first insulating member 130 , so that the first insulating member 130 can be grasped by the equipment tooling, thereby achieving accurate insertion of the first insulating member 130 into the stator slot.

[0108] Specifically, if Figure 1 、 Figure 4 and Figure 7As shown, during the process of inserting the first insulating member 130 into the gap between the windings 120 on two adjacent teeth, the equipment tooling grabs the first insulating member 130 and inserts the first insulating member 130 into the stator slot. Therefore, along the axial direction of the stator core 110, by providing a protrusion 1312 at the first end of the first insulating member 130, it is beneficial for the equipment tooling to firmly grasp the first insulating member 130, realize the precise insertion of the first insulating member 130, and further improve the automation capability of the equipment. Among them, when installing the first insulating member 130, according to the attached Figure 1 As shown, the protrusion 1312 is grasped by an apparatus and the first insulating member 130 is inserted downward into the stator slot.

[0109] In this embodiment, further, Figure 1 and Figure 7 As shown, along the axial direction of the stator core 110, the length of the stator core 110 is set to L1, and the length of the first insulating member 130 excluding the first end protrusion 1312 is set to L2. The length difference between L2 and L1 is set to be greater than or equal to 7 mm. When the first insulating member 130 is installed in the stator slot, on the one hand, at least a portion of the protrusion 1312 can protrude from the stator core 110, facilitating assembly and disassembly of the first insulating member 130. On the other hand, the size of the portion of the first insulating member 130 disposed in the stator slot can be ensured, such that the size of the first insulating member 130 disposed in the stator slot is greater than or equal to the size of the stator slot, thereby ensuring the insulation effect of the first insulating member 130 on adjacent windings 120, thereby enhancing the reliability of the insulation between the windings 120 at the ends of the stator slot.

[0110] Specifically, if Figure 1 、 Figure 4 and Figure 7 As shown, during the operation of the stator 100, the process dimensions of the height of the stator slot end windings 120 are determined in consideration, that is, while ensuring the insulation performance of the straight sections of two adjacent windings 120 in the stator slots, insulation breakdown between the end windings 120 is prevented. Therefore, the length difference between L2 and L1 is set to be greater than or equal to 7 mm, which effectively avoids insulation breakdown between the end windings 120 and enhances insulation reliability.

[0111] In this embodiment, further, Figure 4 、 Figure 5 and Figure 7As shown, when the first insulating member 130 is in the first state, that is, in a planar state, the protrusion 1312 at the first end of the first insulating member 130 is trapezoidal. The upper and lower bases of the protrusion 1312 are respectively L3 and L4, and the difference between L4 and L3 is greater than or equal to 1 mm. This facilitates the gripping of the first insulating member 130 by the equipment tooling, thereby achieving precise insertion of the first insulating member 130 into the stator slot.

[0112] Specifically, if Figure 7 As shown, during the insertion of the first insulator 130 into the gap between the windings 120 on two adjacent teeth, that is, during the insertion of the first insulator 130 into the stator slot, the equipment tooling grasps the first insulator 130 and inserts it into the stator slot. Therefore, when the first insulator 130 is in the first state, the upper and lower bases of the protrusion 1312 are set to L3 and L4, respectively, and the difference between L3 and L4 is set to be greater than or equal to 1 mm. This facilitates the equipment tooling to securely grasp the first insulator 130, achieving precise insertion of the first insulator 130 and thereby improving the automation capabilities of the equipment.

[0113] Specifically, the difference between L4 and L3 is greater than or equal to 1 mm and less than or equal to 10 mm. Furthermore, the difference between L4 and L3 is greater than or equal to 2 mm and less than or equal to 5 mm.

[0114] In this embodiment, further, Figure 4 and Figure 7 As shown, by setting the height of the protrusion 1312 of the first insulating member 130 within a certain range, it is beneficial to improve the operability of the equipment tooling grabbing operation and further improve the efficiency of the equipment tooling grabbing operation.

[0115] Specifically, if Figure 4 and Figure 7 As shown, during the insertion of the first insulating member 130 into the stator slot, the first insulating member 130 is grasped by the equipment tooling. If the height of the protrusion 1312 of the first insulating member 130 is set too short, the operability of the equipment tooling grasping operation will be affected. Therefore, setting the height of the protrusion 1312 between greater than or equal to 2.5 mm and less than or equal to 15 mm maximizes the grasping efficiency of the equipment tooling and the maximum automation capability of the equipment. The specific height of the protrusion 1312 can be determined according to the actual process.

[0116] In a specific application, the height of the protrusion is greater than or equal to 5 mm and less than or equal to 10 mm. Further, the height of the protrusion is 6 mm, 7 mm, 8 mm or 9 mm.

[0117] In this embodiment, further, Figure 1 、 Figure 3 、 Figure 4 and Figure 7 As shown, a recess 1314 is provided at the second end of the first insulating member 130 along the axial direction of the stator core 110. The protrusion 1312 and the recess 1314 are arranged opposite to each other. That is, the first insulating member 130 includes a trapezoidal protrusion 1312 at one axial end, and a trapezoidal recess 1314 with the same shape and size as the trapezoidal protrusion 1312 at the other axial end. The protrusion 1312 facilitates the equipment tooling to grasp the first insulating member 130, and the recess 1314 is provided to avoid collision and interference between the first insulating member 130 and the insulating frame 150 when the first insulating member 130 is inserted into the stator slot. This allows the first insulating member 130 to be accurately inserted into the stator slot, further improving the automation capability of the equipment.

[0118] In this embodiment, further, Figure 1 、 Figure 4 、 Figure 5 and Figure 7 As shown, by arranging the center lines of the convex portion 1312 and the concave portion 1314 of the first insulating member 130 to coincide with each other, the convex portion 1312 and the concave portion 1314 can be folded along the center line during the folding process of the first insulating member 130, thereby ensuring the overall straightness of the first insulating member 130, thereby improving the smoothness and accuracy of the first insulating member 130 during the insertion into the stator slot along the axial direction.

[0119] In this embodiment, further, Figure 1 、 Figure 4 、 Figure 5 and Figure 7 As shown, the convex portion 1312 and the concave portion 1314 of the first insulating member 130 are configured to have the same shape. This further ensures that the center lines of the convex portion 1312 and the concave portion 1314 coincide with each other, thereby enabling the convex portion 1312 and the concave portion 1314 to fold in half along their center lines. This improves the smoothness and accuracy of the axial insertion of the first insulating member 130 into the stator slot. Furthermore, the identical shape of the convex portion 1312 and the concave portion 1314 simplifies the structure, facilitating production and processing, and effectively reducing production costs.

[0120] In this embodiment, further, Figures 4 to 7 As shown, the first insulating member 130 further includes a transition section 1330 .

[0121] Among them, Figure 4 and Figure 6As shown, the first insulating part 1310 and the second insulating part 1320 are connected by a transition section 1330, that is, the first insulating part 1310 and the second insulating part 1320 are connected to form a whole through the transition section 1330, and a folding position is provided on the transition section 1330, so that the first insulating part 1310 and the second insulating part 1320 can be folded along the folding position to achieve that the length of the first insulating part 1310 after folding is greater than the length of the second insulating part 1320 after folding. Compared with the symmetrical structure with the same length on both sides in the prior art, the material usage of the first insulating part 130 can be reduced, thereby reducing the material cost. At the same time, since the first insulating part 1310 and the second insulating part 1320 are folded along the folding position, an arc-shaped transition section 1330 is formed at the folded connection between the first insulating part 1310 and the second insulating part 1320, that is, the transition section 1330, that is, after the first insulating part 130 is folded along the folding position, the transition section 1330 is "U"-shaped. After the first insulating part 130 is folded, due to its own bending, there is a supporting elastic force between the first insulating part 1310 and the second insulating part 1320. When the first insulating part 130 is inserted into the gap between the windings 120 on two adjacent teeth, it can use its own elastic force to make the first insulating part 1310 and the second insulating part 1320 respectively close to the two groups of adjacent windings 120, thereby enhancing the fixing effect and improving the reliability of insulation.

[0122] The fourth embodiment of the present invention provides a stator 100, which further comprises:

[0123] By providing a plurality of first insulating members 130 , at least a portion of the stator slots includes a first insulating member 130 , thereby physically isolating the windings 120 in the stator slots and ensuring insulation reliability.

[0124] Specifically, if Figure 1 As shown, the number of stator slots can be set to be equal to the number of first insulating members 130. In this way, the first insulating members 130 can insulate and isolate the windings 120 in all stator slots, effectively improving the insulation reliability of the motor during operation. For example, in this embodiment, the number of stator slots is set to 12, and the number of first insulating members 130 is set to 12, that is, the number of stator slots is equal to the number of first insulating members 130, so that each stator slot contains a first insulating member 130, so that the insulation isolation state of the first insulating members 130 in the stator slot is optimized, ensuring insulation reliability.

[0125] It can be understood that the number of the first insulating members 130 may also be less than the number of the stator slots.

[0126] In this embodiment, further, Figures 1 to 7As shown, by setting the thickness of the first insulating member 130 between 0.25 mm and 0.3 mm, that is, setting the thickness of the first insulating portion 1310 and the second insulating portion 1320 to be greater than or equal to 0.25 mm and less than or equal to 0.3 mm, the insulation withstand voltage requirements between adjacent windings 120 in the stator slots are guaranteed. Furthermore, setting a thickness range for the first insulating member 130 can, on the one hand, prevent insulation breakdown between adjacent windings 120 and enhance insulation reliability; on the other hand, setting a thickness range for the first insulating member 130 can enhance the elastic force of the folded first insulating member 130, that is, the supporting elastic force between the first insulating portion 1310 and the second insulating portion 1320. Consequently, when the first insulating member 130 is inserted into the gap between the windings 120 on two adjacent teeth, it can cling tightly to the two sets of adjacent windings 120 through its own elastic force, thereby enhancing the fixing effect and thus improving insulation reliability.

[0127] The fifth embodiment of the present invention provides a stator 100, which further comprises:

[0128] like Figure 1 、 Figure 2 and Figure 3 As shown, the stator core 110 includes a plurality of segmented cores 1102. The plurality of segmented cores 1102 are sequentially connected along the circumference of the stator core 110, so that stator slots can be defined between two adjacent stator cores 110. The stator slots are then arranged circumferentially along the axis of the stator core 110. The windings 120 are wound around the teeth and located within the stator slots. Furthermore, the first insulating members 130 are also arranged along the circumference of the motor and correspondingly inserted into the stator slots, thereby physically isolating the windings 120 within the stator slots and achieving insulation reliability.

[0129] like Figure 8 As shown, further, the stator core 110 includes a plurality of segmented cores 1102. When winding the winding 120, the winding 120 can be wound on each segmented core 1102 respectively. When all the segmented cores 1102 are wound, the plurality of segmented cores 1102 are combined into a circle. This arrangement effectively improves the slot fill rate of the stator 100.

[0130] In this embodiment, further, Figures 1 to 3As shown, each segmented core 1102 is provided with a plurality of punching sheets, and the plurality of punching sheets are stacked and distributed along the axial direction of the stator core 110, so that the overlapping portion 1104 is formed at the peripheral edge of the punching sheet. When the plurality of punching sheets are stacked and distributed along the axial direction of the core, overlapping gaps are defined between adjacent punching sheets and formed in the stator slots, so that the winding 120 is wound on the tooth portion and is located in the stator slot, so that when the first insulating member 130 is inserted into the gap between the winding 120 on two adjacent teeth, the winding 120 in the stator slot is effectively physically isolated to ensure insulation reliability.

[0131] Specifically, the punching sheets are silicon steel sheets.

[0132] In this embodiment, further, Figures 1 to 3 As shown, the plurality of punching sheets include first-type punching sheets and second-type punching sheets, and the plurality of first-type punching sheets and the plurality of second-type punching sheets are alternately distributed along the axial direction of the stator core 110. Specifically, along the circumferential direction of the stator core 110, an overlapping portion 1104 is provided on the first side of the first-type punching sheet, and a notch portion is provided on the second side of the first-type punching sheet; simultaneously, a notch portion is provided on the first side of the second-type punching sheet, and an overlapping portion 1104 is provided on the second side of the second-type punching sheet. In this way, along the axial direction of the stator core 110, on both sides of the notch portion, two adjacent overlapping portions 1104 can enclose a gap, so that in two adjacent segmented cores 1102, the overlapping portion 1104 of one segmented core 1102 can be inserted into the gap of the other segmented core 1102, further improving the slot fill rate of the stator.

[0133] Specifically, when a first-class punching sheet and a plurality of second-class punching sheets are alternately distributed along the axial direction of the stator core 110, the overlapping portions 1104 of two adjacent first-class punching sheets have a gap between the first side, and the notch portion of the second-class punching sheet directly between the two first-class punching sheets defines an overlapping gap on the first side. Correspondingly, the overlapping portions 1104 of two adjacent second-class punching sheets have a gap between the second side, and the notch portion of the first-class punching sheet directly between the two second-class punching sheets defines an overlapping gap on the first side. In this way, the purpose of improving the slot fill rate of the stator can be achieved by inserting the overlapping portion 1104 of one segmented core 1102 into the gap of another segmented core 1102. At the same time, after all the segmented cores 1102 are inserted, the multiple segmented cores 1102 are rounded together, which can further improve the slot fill rate of the stator, thereby improving the motor power during motor operation.

[0134] In a specific embodiment, the notch can be formed by cutting material, that is, a portion of material can be cut off from the second side of the first type punching sheet to form the notch, and a portion of material can be cut off from the first side of the second type punching sheet to form the notch.

[0135] A sixth embodiment of the present invention provides a motor, comprising: a stator 100 according to any one of the first to fifth embodiments; and a rotor, cooperating with the stator 100 and rotating.

[0136] The motor proposed in the present invention includes a stator 100 as in any one of the embodiments 1 to 5. Therefore, it has all the beneficial effects of the above-mentioned stator 100, that is, the length of the first insulating part 1310 and the second insulating part 1320 is optimized to have the characteristics of high insulation reliability, good fixity, easy automated production and low cost. Compared with the symmetrical structure with the same length on both sides in the prior art, the material usage of the first insulating part 130 can be reduced, thereby reducing the material cost. This solves the problem in the prior art that when the size of the first insulating part 130 is set unreasonably or the first insulating part 130 is damaged or falls off, the creepage distance between the phases of the winding 120 is insufficient, which in turn leads to the risk of motor load operation, and the first insulating part 130 has a complex structure and high processing cost. This will not be discussed in detail here.

[0137] In addition, the motor further includes a rotor, which is disposed inside the stator 100 and can cooperate with the stator 100 to rotate and thereby output torque.

[0138] The seventh embodiment of the present invention provides a compressor, comprising: the motor as described in the sixth embodiment.

[0139] The compressor proposed by the present invention includes a motor as in Example 6. Therefore, it also has all the beneficial effects of the above-mentioned stator 100, that is, the length of the first insulating part 1310 and the second insulating part 1320 is optimized to have the characteristics of high insulation reliability, good fixity, easy automated production and low cost. Compared with the symmetrical structure with the same length on both sides in the prior art, the material usage of the first insulating part 130 can be reduced, thereby reducing material costs. This solves the problem in the prior art that when the first insulating part 130 is irrationally sized or the first insulating part 130 is damaged or falls off, the creepage distance between the phases of the winding 120 is insufficient, which in turn leads to the risk of motor load operation, and the first insulating part 130 has a complex structure and high processing cost. This will not be discussed in detail here.

[0140] An eighth embodiment of the present invention provides a vehicle, comprising: the compressor according to the seventh embodiment.

[0141] The vehicle proposed in the present invention includes the compressor of the seventh embodiment, and therefore also has all the beneficial effects of the above-mentioned compressors, which will not be discussed here one by one. Specific embodiment:

[0143] like Figures 1 to 7As shown, a specific embodiment of the present invention provides a stator 100 , which includes a stator core 110 , a winding 120 , a first insulating member 130 , a second insulating member 140 and an insulating frame 150 .

[0144] Specifically, if Figures 1 to 3 As shown, taking the number of stator slots of the motor Q=12 as an example, the first insulating member 130 is inserted into the stator slot defined by two adjacent iron cores along the axial direction of the iron core, and the second insulating member 140 is arranged along the inner wall of the stator slot. Insulating skeletons 150 are placed on both sides of the axial end face of the stator core 110, and the winding 120 wound on the insulating skeleton 150 is placed in the stator slot. The first insulating member 130 is arranged along the circumferential direction of the motor to physically isolate the winding 120 in the stator slot, thereby ensuring the insulation reliability of the first insulating member 130.

[0145] Specifically, if Figures 4 to 6 As shown, one side of the folded first insulating member 130 is longer than the other side. That is, the first insulating member 130 includes a first insulating portion 1310 and a second insulating portion 1320. The first insulating portion 1310 and the second insulating portion 1320 of the first insulating member 130 are respectively located on either side of the raised portion 1402 of the second insulating member 140. The folded connection between the first insulating portion 1310 and the second insulating portion 1320 forms an arc-shaped transition section 1330. The outer sides of the first insulating portion 1310 and the second insulating portion 1320 are in close contact with the winding 120. Compared with the symmetrical structure in the prior art where both sides have the same length, the material usage of the first insulating member 130 can be reduced, thereby reducing material costs.

[0146] In a specific application, the first insulating member 130 is phase insulation and the second insulating member 140 is slot insulation. It can be understood that windings 120 of different phases are wound on two adjacent teeth. Phase insulation is arranged between windings 120 of different phases on two adjacent teeth to insulate the windings 120 of different phases. Slot insulation is to insulate the inner wall surface of the stator slot, so that the winding 120 is wound on the tooth through slot insulation, thereby playing an insulating role.

[0147] Furthermore, within the same stator slot, the first insulating portion 1310 contacts one set of windings 120, while the second insulating portion 1320 contacts another set of windings 120. This means that the first insulating member 130 simultaneously connects two adjacent sets of windings 120. This allows the first insulating member 130 to adhere tightly to the two adjacent sets of windings 120 through the elastic force generated by its own bending, enhancing its securement. This effectively addresses the insulation shedding problem that can occur when only a single sheet of insulating paper is used for phase isolation in the prior art. This ensures the insulation reliability of the first insulating member 130 while also enhancing its securement. Furthermore, the length of the folded first insulating portion 1310 is greater than the length of the folded second insulating portion 1320. This results in low material consumption, low material costs, a simple design, ease of production, and low production costs.

[0148] Specifically, if Figure 7 As shown, the first insulating member 130 includes a trapezoidal protrusion 1312 at one axial end and a trapezoidal recess 1314 having the same shape and size as the trapezoidal protrusion 1312 at the other axial end. The center lines of the trapezoidal protrusion 1312 and the trapezoidal recess 1314 coincide with each other. The first insulating member 130 fixes the protrusion 1312 through the device and inserts the recess 1314 into the stator slot along the axial direction.

[0149] Specifically, if Figure 1 and Figure 6 As shown, the height difference between the first insulating portion 1310 and the second insulating portion 1320 is greater than the height of the second insulating member 140 protruding into the slot, that is, the height of the protrusion 1402. This ensures that the three layers of insulation formed by the first insulating portion 1310 and the protrusion 1402 of the first insulating member 130 and the second insulating member 140 at the bottom of the stator slot isolate the winding 120. This is because the windings 120 at the bottom of the motor stator slot are closely spaced. The three layers of insulation can further improve the phase insulation reliability and can also prevent the second insulating portion 1320 from being damaged when the first insulating member 130 is inserted into the stator slot. 20 interferes with the raised portion 1402 in the second insulating member 140, and the second insulating portion 1320 and the first insulating portion 1310 form two layers of insulating spacers. While ensuring insulation reliability, they can adhere to the adjacent winding 120 through the elastic force formed by their own bending, playing a fixing role, eliminating the possibility of insulation falling off when only a single sheet of insulating paper is used for phase isolation. At the same time, one side of the first insulating member 130 is longer than the other side. Compared with a symmetrical structure with the same length on both sides, the material usage of the first insulating member 130 can be reduced, thereby reducing material costs.

[0150] In a specific application, when assembling the stator 100 , the second insulating member 140 is first installed in the stator slot, and then the first insulating member 130 is inserted into the stator slot. The above-mentioned size setting can avoid interference between the first insulating member 130 and the second insulating member 140 .

[0151] Specifically, if Figure 1 and Figure 7 As shown, the axial length of the stator core 110 is L1, and the axial length of the first insulating member 130 excluding the protrusion 1312 is L2, satisfying the following: L2 ≥ L1 + 7 mm, where 7 mm is a process dimension determined considering the height of the end winding 120. That is, when the first insulating member 130 is installed in the stator slot, at least a portion of the protrusion 1312 can protrude from the stator core 110, which facilitates the assembly and disassembly of the first insulating member 130. At the same time, the size of the portion of the first insulating member 130 disposed in the stator slot can be ensured, so that the size of the first insulating member 130 disposed in the stator slot can be greater than or equal to the size of the stator slot, thereby ensuring the insulation effect of the first insulating member 130 on the adjacent windings 120. In this way, while ensuring the insulation performance of the straight segments of the two-phase windings 120 in the stator slots, insulation breakdown between adjacent end windings 120 can be prevented, thereby enhancing insulation reliability.

[0152] Specifically, if Figure 1 and Figure 7 As shown, the height of the trapezoidal protrusion 1312 is greater than or equal to 3 mm. In specific applications, the height of the protrusion is greater than or equal to 5 mm and less than or equal to 10 mm. Furthermore, the height of the protrusion is 6 mm, 7 mm, 8 mm or 9 mm. The upper base length of the trapezoid of the protrusion 1312 of the first insulating member 130 is 1 mm shorter than the lower base of the trapezoid of the protrusion 1312. This facilitates the equipment tooling to insert the first insulating member 130 axially into the stator slot by grabbing, thereby improving the automation capability and simplicity of the equipment. If the protrusion 1312 is too short, it will affect the operability of the equipment. The trapezoidal height of the protrusion 1312 is 3 mm, which is determined according to the actual process, and the recess 1314 can avoid collision and interference with the insulating frame 150 when the first insulating member 130 is inserted.

[0153] In addition, the number of first insulating members 130 does not exceed the number of stator slots of the motor. Specifically, the number of stator slots in this embodiment is 12, and the number of first insulating members 130 is 12. When the number of first insulating members 130 is equal to the number of stator slots, each stator slot contains a first insulating member 130. At this time, the insulation effect of the phase-to-phase winding 120 in each stator slot is better.

[0154] In addition, the thickness of a single side of the first insulating member 130 is greater than or equal to 0.25 mm and less than or equal to 0.3 mm, which can ensure the insulation withstand voltage requirements between the phase windings 120 in the stator slots.

[0155] In addition, the first insulating member 130 is made of polyphenylene sulfide (PPS), which has good insulation effect, high temperature resistance, and good compatibility with the working environment.

[0156] In summary, the stator 100 proposed in a specific embodiment of the present invention comprises a stator core 110 including a plurality of teeth distributed circumferentially around the stator core 110. Stator slots are formed between adjacent teeth, and windings 120 are wound around the teeth and positioned within the stator slots. Furthermore, a first insulating member 130 is provided and inserted into the gap between the windings 120 on two adjacent teeth, with at least a portion of the first insulating member 130 positioned within the gap between the windings 120 on two adjacent teeth. This effectively physically isolates the windings 120 within the stator slots, ensuring insulation reliability. After the first insulating member 130 is folded, one side is longer than the other side, that is, the first insulating member 130 includes a first insulating portion 1310 and a second insulating portion 1320. The first insulating portion 1310 and the second insulating portion 1320 of the first insulating member 130 are respectively located on both sides of the raised portion 1402 of the second insulating member 140. The folded connection between the first insulating portion 1310 and the second insulating portion 1320 forms an arc-shaped transition section 1330. The outer sides of the first insulating portion 1310 and the second insulating portion 1320 are in close contact with the winding 120. By optimizing the first insulating member 130 in the folded state, that is, optimizing the lengths of the first insulating portion 1310 and the second insulating portion 1320, the first insulating member 130 has the characteristics of high insulation reliability, good fixity, easy automated production and low cost.

[0157] In the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "mounted," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to fixed, removable, or integral connections; and "connected" can refer to direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0158] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0159] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A stator, characterized in that: include: A stator core, the stator core comprising a plurality of teeth, the plurality of teeth being distributed along the circumference of the stator core, with a stator slot being provided between two adjacent teeth; a winding wound around the teeth and extending into the stator slots; a first insulating member, at least a portion of which is located in a gap between the windings on two adjacent teeth, the first insulating member comprising a first insulating portion and a second insulating portion connected to each other, wherein within the same stator slot, the first insulating portion contacts one group of the windings, and the second insulating portion contacts another group of the windings; In a cross section perpendicular to the axial direction of the stator core, the length of the first insulating portion is greater than the length of the second insulating portion; a second insulating member disposed in the stator slot, at least a portion of the second insulating member extending along a slot wall of the stator slot, and at least a portion of the winding being connected to the tooth portion through the second insulating member; The second insulating member includes a raised portion, the second insulating portion and the raised portion are located on the same side of the first insulating portion, and the first insulating portion is connected to the raised portion; In a cross section perpendicular to the axial direction of the stator core, the length of the first insulating portion is H1, the length of the second insulating portion is H2, the height of the protrusion is H3, and the difference between H1 and H2 is greater than H3.

2. The stator according to claim 1, characterized in that An insulating frame is provided at both ends of the stator core along the axial direction of the stator core, and the winding is wound on the teeth covered by the insulating frame and the second insulating member.

3. The stator according to claim 1 or 2, characterized in that: The first insulating member is provided with a folding position, and the first insulating member has at least a first state and a second state; In the first state, the first insulating member is unfolded, and the first insulating portion and the second insulating portion are adjacently arranged. In the second state, the first insulating member is folded along the folding position so that the first insulating portion and the second insulating portion are oppositely arranged.

4. The stator according to claim 3, characterized in that Along the axial direction of the stator core, a convex portion is provided at the first end of the first insulating member, and the first insulating member is extended into the stator slot by grasping the convex portion.

5. The stator according to claim 4, characterized in that Along the axial direction of the stator core, the length of the stator core is L1, the difference between the length of the first insulating member and the length of the protrusion is L2, and L2 minus L1 is greater than or equal to 7 mm.

6. The stator according to claim 4, characterized in that In the first state, the convex portion is trapezoidal, the upper base of the convex portion is L3, the lower base of the convex portion is L4, and the difference between L4 and L3 is greater than or equal to 1 mm.

7. The stator according to claim 4, characterized in that The height of the protrusion is greater than or equal to 2.5 mm and less than or equal to 15 mm.

8. The stator according to claim 4, characterized in that Along the axial direction of the stator core, a concave portion is provided at the second end of the first insulating member, and the concave portion is arranged opposite to the convex portion.

9. The stator according to claim 8, characterized in that The center lines of the concave portion and the convex portion coincide with each other; and / or The concave portion and the convex portion have the same shape.

10. The stator according to claim 3, characterized in that Also includes: A transition section, the first insulating portion and the second insulating portion are connected by the transition section, and the folding position is provided in the transition section.

11. The stator according to claim 1 or 2, characterized in that: There are a plurality of stator slots, and the first insulating member is disposed in at least some of the stator slots.

12. The stator according to claim 1 or 2, characterized in that: The thickness of the first insulating member is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

13. The stator according to claim 1 or 2, characterized in that: The stator core includes a plurality of segmented cores, and the plurality of segmented cores are sequentially connected along the circumference of the stator core.

14. The stator according to claim 13, characterized in that Any of the segmented cores includes a plurality of punching sheets, and the plurality of punching sheets are stacked and distributed along the axial direction of the stator core.

15. The stator according to claim 14, characterized in that In the same segmented iron core, the plurality of punching sheets include first-type punching sheets and second-type punching sheets that are overlapped; Along the circumference of the stator core, an overlapping portion is provided on a first side of the first type of punching sheet, and a notch portion is provided on a second side of the first type of punching sheet; The second side of the second type punching sheet is provided with the overlapping portion, and the first side of the second type punching sheet is provided with the notch portion; In the axial direction of the stator core, two adjacent overlapping portions are located on both sides of the notch portion and enclose a gap. In two adjacent segmented cores, the overlapping portion of one segmented core is inserted into the gap of the other segmented core.

16. A motor, characterized in that: include: The stator according to any one of claims 1 to 15; The rotor cooperates with the stator and rotates.

17. A compressor, characterized in that: include: The stator according to any one of claims 1 to 15; or The motor as claimed in claim 16.

18. A vehicle, characterized in that: include: The compressor of claim 17.

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