Stator, motor, compressor and vehicle

Abstract

The present application provides a stator, a motor, a compressor, and a vehicle, the stator including a stator core including a plurality of teeth, the plurality of teeth being distributed along the circumferential direction of the stator core, a stator core having a stator slot between two adjacent teeth, a winding wound around the teeth and extending to the stator slot, and a first insulating member, at least a portion of the first insulating member being located in a gap between the windings in the two adjacent teeth, the first insulating member including a first insulating part and a second insulating part connected together, the first insulating part contacting one set of windings and the second insulating part contacting another set of windings in the same stator slot, the length of the first insulating part being greater than the length of the second insulating part in a cross section perpendicular to the axial direction of the stator core. The stator provided in the present application optimizes the first insulating member, i.e., optimizes the lengths of the first insulating part and the second insulating part, and has the characteristics of high insulation reliability, excellent fixation, ease of automated production, and low cost.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed on May 17, 2021, with application number 202110536641.9 and entitled "STATOR, MOTOR, COMPRESSOR AND VEHICLE", and to a Chinese patent application filed on May 17, 2021, with application number 202121050468.3 and entitled "STATOR, MOTOR, COMPRESSOR AND VEHICLE", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of motor technology, and more particularly to a stator, a motor, a compressor, and a vehicle. [Background technology]

[0003] At present, permanent magnet motors are widely used in the fields of air conditioners, automobile compressors and other fields. Due to the dual constraints of improving energy efficiency grades and functional demands, the power density, efficiency and reliability requirements of motors are gradually improving. With the gradual improvement of motor power grades and reliability requirements, there are also challenges in the insulation performance of motor stators. When the stator adopts concentrated windings, it is necessary to fully utilize the stator slot area to improve the power density of the motor, and the gap between the copper wire wound around the two teeth in a single stator slot is small, and in order to ensure electrical safety, it is necessary to use interphase insulation to isolate the windings on different teeth in the same slot, thereby ensuring the insulation performance of the motor and preventing electrical failures such as winding burnout caused by insulation breakdown during the charging operation of the motor, thereby ensuring the reliability of the motor.

[0004] In the prior art, the interphase insulation structure makes the areas of the stator slots on both sides asymmetrical, which causes the slot area to be wasted and there are two bends, which reduces the simplicity and reliability of automation. Another motor insulation structure has slot insulation and interphase insulation integrated, but the process of cutting the insulating film is added in the process of forming the divided stator core into a ring shape, which makes the insulation shape complicated and increases the difficulty of fitting the divided cores into a circle. In addition, if the dimensions of the interphase insulation are unreasonable or the interphase insulation is damaged or falls off, the creepage distance between the phases of the windings will be insufficient, which may cause interphase failure when the motor is operating under load. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] Therefore, a first aspect of the present application provides a stator.

[0007] A second aspect of the present application further provides a motor.

[0008] A third aspect of the present application further provides a compressor.

[0009] A fourth aspect of the present application further provides a vehicle. [Means for solving the problem]

[0010] In view of this, a first aspect of the present application provides a stator, the stator including: a stator core including a plurality of teeth, the plurality of teeth being distributed along a circumferential direction of the stator core, and having a stator slot between two adjacent teeth; a winding wound around the teeth and extending into the stator slot; and a first insulating member, at least a portion of the first insulating member being located in a gap between the windings in two adjacent teeth, the first insulating member including a first insulating portion and a second insulating portion connected together, the first insulating portion contacting one set of windings and the second insulating portion contacting another set of windings within the same stator slot, 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.

[0011] The stator provided in the present application includes a stator core, a winding, and a first insulating member. The stator core includes a plurality of teeth, the plurality of teeth are distributed along the circumferential direction of the stator core, a stator slot is formed between two adjacent teeth, a winding is wound around the teeth, and is located in the stator slot. The first insulating member is inserted into the gap between the windings of the two adjacent teeth, and at least a part of the first insulating member is located in the gap between the windings of the two adjacent teeth, so that the windings in the stator slot can be effectively physically isolated and the insulation reliability can be guaranteed. Specifically, the first insulating member includes a first insulating part and a second insulating part, among which the first insulating part is connected to the second insulating part, and in a cross section perpendicular to the axial direction of the stator core, the length of the first insulating part is greater than that of the second insulating part, i.e., when the first insulating member is folded, the length of the first insulating part folded in half is greater than that of the second insulating part folded in half, which reduces the amount of material used for the first insulating member and reduces material costs compared to the symmetrical structure in which both sides have the same length in the prior art. In addition, in the same stator slot, the first insulating part contacts one set of windings, and the second insulating part contacts another set of windings, i.e., the first insulating member is connected to two adjacent windings at the same time, and thus the first insulating member adheres to the two adjacent windings by the elastic force formed by the folding of the first insulating member, reinforcing the fixing action, effectively solving the problem of insulation loss occurring when phase isolation is performed using only a single insulating paper in the prior art, ensuring the insulation reliability of the first insulating member and reinforcing the fixing action of the first insulating member at the same time.

[0012] More specifically, in the process of inserting the first insulating member into the gap between the windings of two adjacent teeth, at least a part of the first insulating member is located in the gap between the windings of two adjacent teeth, thereby achieving isolation and insulation treatment for the adjacent windings in the stator slot. Furthermore, the first insulating member includes a first insulating part and a second insulating part connected to the first insulating member, and is installed such that when the first insulating member is folded in half, the length of the first insulating part folded in half is longer than the length of the second insulating part folded in half, thereby realizing the formation of an elastic structure possessed by the first insulating member by folding in half itself, and thus, in the same stator slot, two first insulating members in the folded state can be closely supported and fixed to adjacent windings, thereby improving the insulation reliability during motor operation and the stability of position fixing in the stator slot. This solves the problem that in the prior art, when the dimension setting of the first insulating member is unreasonable or the first insulating member is damaged and falls off, the creepage distance between the phases of the windings is insufficient, and further the risk of motor load operation occurs. In addition, the length of the first insulating part folded in half is set to be greater than the length of the second insulating part folded in half, thus reducing the amount of material used, reducing material costs, simplifying the shape, making it easy to manufacture, and reducing production costs. In addition, the material of the first insulating member is set to polyphenylene sulfide (PPS), which has a high insulating effect, high temperature resistance, and high compatibility with the operating environment.

[0013] Therefore, the stator provided in the present application optimizes the first insulating member, i.e., optimizes the lengths of the first insulating part and the second insulating part, and has the characteristics of high insulation reliability, excellent fixation, ease of automated production and low cost.

[0014] Based on the above stator provided in the present application, it may further have the following additional technical features.

[0015] The above technical means further includes a second insulating member that is provided within the stator slot, at least a portion of the second insulating member extends along a slot wall of the stator slot, and at least a portion of the windings are connected to the teeth via the second insulating member.

[0016] In this technical solution, the stator further includes a second insulating member. The second insulating member is installed in the stator slot, where the second insulating member extends along the slot wall of the stator slot, and the winding is connected to the teeth through the second insulating member. That is, the second insulating member is provided along the inner wall of the stator slot, and the second insulating member realizes the connection between the winding and the teeth, and the first insulating member is easily inserted into the stator slot limited to two adjacent cores along the axial direction of the core, thereby realizing the physical isolation of the winding in the stator slot, and improving the insulation reliability of the first insulating member during use.

[0017] In a specific application, the first insulating member is an interphase insulating member, and the second insulating member is a slot insulating member, which can be understood as follows: when windings of different phases are wound on two adjacent teeth, the interphase insulating member, i.e., the slot insulating member is installed between the windings of different phases on two adjacent teeth and is used to insulate the windings of different phases; and the slot insulating member, i.e., the slot insulating member insulates the inner wall surface of the stator slot, so that the windings are wound on the teeth through the slot insulating member and play the role of insulation.

[0018] In any one of the above technical means, further, the second insulating member includes a protrusion, the second insulating part and the protrusion are located on the same side of the first insulating part, the first insulating part is connected to the protrusion, and in a cross section perpendicular to the axial direction of the stator core, the first insulating part has a length H1, the second insulating part has a length H2, and the protrusion has a height H3, and the difference between H1 and H2 is greater than H3.

[0019] In this technical solution, the second insulating member includes a protrusion, the protrusion 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 protrusion, the difference between the length of the first insulating member and the length of the second insulating member is greater than the height of the protrusion, i.e., the sum of the length of the second insulating member and the length of the protrusion is less than that of the first insulating member, so that when the first insulating member is installed in the stator slot, the above length setting can avoid interference between the second insulating member and the protrusion, and ensure the reliability of the assembly.

[0020] 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, and the above dimension setting can avoid interference between the first insulating member and the second insulating member.

[0021] Furthermore, the first insulating portion and the second insulating portion of the first insulating member are located on either side of the protrusion of the second insulating member, and the first insulating portion and the second insulating portion have different lengths when folded in half, i.e., the length of the first insulating portion when folded in half is greater than the length of the second insulating portion when folded in half. Thus, when the first insulating portion comes into contact with the protrusion to connect, the second insulating portion cannot come into contact with the protrusion to connect. In this way, a three-layer insulating layer, consisting of the first insulating portion and the protrusion, is formed between adjacent windings at the bottom of the stator slot, which effectively improves the insulation reliability between the windings.

[0022] Specifically, in a cross section perpendicular to the axial direction of the stator core, the heights of the first insulating part, the second insulating part, and the protrusion are H1, H2, and H3, respectively, and the difference between H1 and H2 is set to be greater than H3, so that, on the one hand, in the process of inserting the first insulating member into the stator slot, the length of the first insulating part folded in half is greater than the length of the second insulating part folded in half, and the difference between the length of the first insulating part and the length of the second insulating part is set to be greater than the height of the protrusion, thus avoiding interference between the second insulating part and the protrusion when the first insulating member is inserted into the stator slot, thereby improving assembly efficiency, and, on the other hand, the length of the first insulating part folded in half is greater than the length of the second insulating part folded in half, so that when the first insulating part comes into contact with the protrusion to connect, the second insulating part cannot come into contact with the protrusion to connect, thus forming three insulating layers of the first insulating part and the protrusion between adjacent windings at the bottom of the stator slot, further improving the insulation reliability between the windings of the first insulating member.

[0023] In any one of the above technical means, 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 around the teeth covered by the insulating frame and the second insulating member.

[0024] In this technical solution, insulating frames are installed on both ends of the stator core along the axial direction of the stator core, and the winding is wound around the teeth covered by the insulating frames and the second insulating member. The winding thus forms the working area of ​​the stator, and is located within the stator slot, and is inserted into the gap between the windings of two adjacent teeth via the first insulating member, thereby achieving physical isolation of the windings within the stator slot and improving the insulation reliability during the motor operation process.

[0025] 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 installed on both ends of the stator core further isolate the windings at the ends of the stator core, improving the reliability of the connection between the windings and the stator core.

[0026] In a specific application, the insulating frame is made of an insulating material.

[0027] In any one of the above technical means, the first insulating member further has 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 part and the second insulating part are arranged adjacent to each other, and in the second state, the first insulating member is folded along the folding position, thereby causing the first insulating part and the second insulating part to be arranged opposite each other.

[0028] In this technical solution, 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. That is, the first insulating member can be unfolded or folded according to the folding position, and the first insulating member can be unfolded in the first state and folded in the second state. The provision of the folding position allows the first insulating member to be folded according to the folding position when folded into another device, guaranteeing the length dimension of the first insulating part and the second insulating part, improving the reliability of the structure formed after the first insulating member is folded, and further guaranteeing the assembly status of the first insulating member and the second insulating member, thereby improving the insulating effect of the first insulating member and the second insulating member.

[0029] Specifically, the first insulating member can change the use state of the first insulating member according to the use needs during the use process. In the first state, the first insulating member is deployed, and the first insulating part and the second insulating part are installed adjacent to each other, that is, the first insulating part and the second insulating part are connected and in the same plane. At this time, the first insulating part and the second insulating part as a whole are installed in a "one" shape. In the second state, the first insulating part and the second insulating part are installed opposite each other, that is, the first insulating part and the second insulating part as a whole are installed in a "U" shape. By installing the first insulating member to have at least the first state and the second state, the use form of the first insulating member can be changed according to the assembly needs, and the suitability of use is improved. At the same time, when the first insulating member is in the second state, the elastic force formed by the bending of the first insulating member itself allows the first insulating part and the second insulating part to be closely attached to the two adjacent groups of windings when the first insulating member is inserted into the gap between the windings in two adjacent tooth portions, thereby performing a fixed support function, eliminating the possibility of insulation loss occurring when phase isolation is performed by only a single insulating member, and further improving the insulation reliability between the windings of the first insulating member.

[0030] In any one of the above technical means, a convex portion is further provided at a first end of the first insulating member along the axial direction of the stator core, and the first insulating member is inserted into the stator slot by gripping the convex portion.

[0031] In this technical means, a convex portion is provided at the first end of the first insulating member along the axial direction of the stator core, making it easier for equipment tools to grip the first insulating member and enabling the first insulating member to be accurately inserted into the stator slot.

[0032] Specifically, in the process of inserting the first insulating member into the gap between the windings of two adjacent teeth, the equipment tool holds the first insulating member and inserts the first insulating member into the stator slot. Therefore, by providing a protrusion at the first end of the first insulating member along the axial direction of the stator core, it is advantageous for the equipment tool to stably hold the first insulating member, realize accurate insertion into the first insulating member, and further improve the automation capability of the device.

[0033] In any one of the above technical means, 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 convex portion is L2, and the length obtained by subtracting L1 from L2 is 7 mm or more.

[0034] In the technical means, the length of the stator core along the axial direction of the stator core is set as L1, the length for removing the convex portion at the first end of the first insulating member is set as L2, and the difference in length between L2 and L1 is set to 7 mm or more. When the first insulating member is installed in the stator slot, on the one hand, at least a part of the convex portion can be made to protrude from the stator core, thereby facilitating assembly and removal of the first insulating member, and on the other hand, it can also guarantee the dimension of the portion of the first insulating member installed in the stator slot, thereby making the dimension of the first insulating member installed in the stator slot equal to or greater than the dimension of the stator slot, further guaranteeing the insulating effect of the first insulating member against the adjacent windings, thereby reinforcing the reliability of the insulation between the end windings of the stator slot.

[0035] Specifically, during the operation of the stator, the process dimension determined by the height of the end windings of the stator slot is taken into consideration, that is, to ensure the insulation performance of the straight segments of two adjacent windings in the stator slot, while at the same time preventing the occurrence of dielectric breakdown between the end windings. Therefore, the length difference between L2 and L1 is set to be 7 mm or more, which effectively prevents the occurrence of dielectric breakdown between the end windings and enhances the insulation reliability.

[0036] In any one of the above technical means, 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 1 mm or more.

[0037] In this technical solution, when the first insulating member is in the first state, i.e., when the first insulating member is in a planar state, the convex portion of 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 set to be 1 mm or more. In this way, the first insulating member can be easily gripped by the equipment tool, and the first insulating member can be accurately inserted into the stator slot.

[0038] Specifically, in the process of inserting the first insulating member into the gap between the windings of two adjacent teeth, i.e., in the process of inserting the first insulating member into the stator slot, the equipment tool grips the first insulating member and inserts the first insulating member into the stator slot. Therefore, when the first insulating member is in the first state, the upper and lower bases of the convex portion are set to L3 and L4, respectively, and the difference between L4 and L3 is set to 1 mm or more. This is advantageous for the equipment tool to stably grip the first insulating member, realizes accurate insertion into the first insulating member, and further improves the automation capability of the equipment.

[0039] Specifically, the difference between L4 and L3 is 1 mm or more and 10 mm or less, and more preferably, the difference between L4 and L3 is 2 mm or more and 5 mm or less.

[0040] In any one of the above technical means, the height of the convex portion is further set to 2.5 mm or more and 15 mm or less.

[0041] In this technical means, by setting the height of the convex portion of the first insulating member within a certain range, it is advantageous to improve the operability of the gripping operation of the equipment tool, and further improves the gripping operation efficiency of the equipment tool.

[0042] Specifically, in the process of inserting the first insulating member into the stator slot, the equipment and tool are used to grip the first insulating member, and if the height of the protrusion of the first insulating member is set too short, it will affect the operability of the equipment and tool in gripping the first insulating member, so the height of the protrusion is set to be between 2.5 mm and 15 mm, at which point the efficiency of the equipment and tool in gripping is the highest and the automation capability of the equipment is the strongest. The specific height of the protrusion can be determined according to the actual process.

[0043] In a specific application, the height of the protrusion is 5 mm or more and 10 mm or less. Moreover, the height of the protrusion is 6 mm, 7 mm, 8 mm or 9 mm.

[0044] In any one of the above technical means, further, a recess is provided at the second end of the first insulating member along the axial direction of the stator core, and the recess and the protrusion are disposed opposite to each other.

[0045] 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. Among them, the protrusion is provided opposite the recess. That is, one axial end of the first insulating member includes one trapezoidal protrusion, and the other axial end includes one trapezoidal recess having the same shape and dimensions as the trapezoidal protrusion. The protrusion allows the equipment tool to easily grip the first insulating member, and the recess prevents the first insulating member from colliding with the insulating frame when it is inserted into the stator slot. This allows the first insulating member to be accurately inserted into the stator slot, and further improves the automation capability of the equipment.

[0046] In any one of the above technical means, furthermore, the center lines of the recessed portion and the protruding portion overlap each other.

[0047] In this technical means, by arranging the center lines of the convex portion and the concave portion of the first insulating member so that they overlap, it is possible to fold the convex portion and the concave portion in half along the center line during the process of folding the first insulating member in half, and further ensure the straightness of the entire first insulating member, thereby improving the smoothness and accuracy of the process of inserting the first insulating member into the stator slot along the axial direction.

[0048] In any one of the above technical means, furthermore, the recess and the protrusion have the same shape.

[0049] In this technical solution, the convex and concave parts of the first insulating member are set to have the same shape, and the center lines of the convex and concave parts are ensured to overlap, and the convex and concave parts can be folded in half along the center line, thereby improving the smoothness and accuracy of the first insulating member when it is inserted into the stator slot along the axial direction. At the same time, since the convex and concave parts have the same shape, the structure is simpler, the production process is easier, and the production cost is effectively reduced.

[0050] In any one of the above technical means, the present invention further includes a transition portion, the first insulating portion and the second insulating portion are connected by the transition portion, and the folding position is provided at the transition portion.

[0051] In this technical solution, the first insulating member further includes a transition part, in which the first insulating member and the second insulating member are connected through the transition part, i.e., the first insulating member and the second insulating member are connected together through the transition part, and the transition part is provided with a folding position, so that the first insulating member and the second insulating member can be folded in half along the folding position, and the length of the first insulating member folded in half is greater than the length of the second insulating member folded in half, which can reduce the amount of material used for the first insulating member and reduce material costs compared with the symmetrical structure in which both sides have the same length in the prior art. At the same time, because the first insulating part and the second insulating part are folded in half along the folding position, the transition part where the first insulating part and the second insulating part are folded in half forms an arc-shaped transition part, i.e., the transition part where the first insulating member is folded in half along the folding position presents a "U" shape. The folded first insulating member bends itself, and a supporting elastic force exists between the first insulating part and the second insulating part. When the first insulating member is inserted into the gaps between the windings in two adjacent tooth parts, its own elastic force causes the first insulating part and the second insulating part to adhere closely to the two groups of adjacent windings, respectively, reinforcing the fixing action and thereby improving the insulation reliability.

[0052] In any one of the above technical means, the number of stator slots is more than one, and the first insulating member is provided in at least some of the stator slots.

[0053] In this technical means, by setting the number of first insulating members to multiple numbers, it is possible to have at least some of the stator slots each include one first insulating member, and further to physically isolate the windings in the stator slots, thereby ensuring insulation reliability.

[0054] Specifically, the number of stator slots can be set to be the same as the number of first insulating members. In this way, the first insulating members can insulate and isolate the windings in all stator slots, effectively improving the insulation reliability during operation of the motor. 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, that is, the number of stator slots and the number of first insulating members are equal, and each stator slot includes one first insulating member, thereby optimizing the insulation isolation state of the first insulating members in the stator slots and ensuring the insulation reliability.

[0055] Naturally, the number of first insulating members may be less than the number of stator slots.

[0056] In any one of the above technical means, furthermore, the thickness of the first insulating member is 0.25 mm or more and 0.3 mm or less.

[0057] In this technical solution, the thickness of the first insulating member is set between 0.25mm and 0.3mm, i.e., the thickness of the first insulating part and the second insulating part is set to 0.25mm or more and 0.3mm or less, thereby ensuring the requirement of dielectric strength voltage between adjacent windings in a stator slot. Furthermore, by setting the thickness range of the first insulating member, on the one hand, it is possible to prevent the occurrence of dielectric breakdown between adjacent windings and reinforce the insulation reliability, and on the other hand, by setting the thickness range of the first insulating member, when the first insulating member is folded in half, it is possible to improve the elastic force of the first insulating member itself after folding in half, i.e., the supporting elastic force between the first insulating part and the second insulating part, and further, when the first insulating member is inserted into the gap between the windings in two adjacent teeth, it can adhere closely to the two groups of adjacent windings by its own elastic force, reinforcing the fixing action and thereby improving the insulation reliability.

[0058] In any one of the above technical means, the stator core further includes a plurality of split cores, and the plurality of split cores are connected in sequence along a circumferential direction of the stator core.

[0059] In this technical solution, the stator core is configured to include a number of split cores, which are connected in sequence along the circumferential direction of the stator core, so that a stator slot can be defined between every two adjacent stator cores, and the stator slots are arranged in the circumferential direction along the axial direction of the stator core, the windings are wound around the teeth and located in the stator slots, and at the same time, the first insulating members are similarly arranged along the circumferential direction of the motor and inserted correspondingly into the stator slots to physically isolate the windings in the stator slots and achieve insulation reliability.

[0060] The stator core further includes a plurality of split cores. When winding the winding, the winding can be wound around each of the split cores respectively. After the winding around all the split cores is completed, the plurality of split cores are aligned in a circle. This installation method effectively improves the space factor of the stator.

[0061] In any one of the above technical means, further, any one of the divided cores includes a plurality of punched sheets, and the plurality of punched sheets are stacked and distributed along the axial direction of the stator core.

[0062] In this technical solution, each split core includes a plurality of punched sheets, which are stacked and distributed along the axial direction of the stator core, and an overlapping portion is formed on the peripheral edge portion of the punched sheets. When the plurality of punched sheets are stacked and distributed along the axial direction of the core, an overlapping gap is defined between adjacent punched sheets and formed in the stator slot, making it easy for the winding to be wound around the tooth portion and located in the stator slot. When the first insulating member is inserted into the gap between the windings in two adjacent teeth, it effectively physically isolates the windings in the stator slot and ensures insulation reliability.

[0063] Specifically, the punched sheet is a silicon steel plate.

[0064] In any one of the above technical means, further, in the same split core, the multiple punching sheets include a first type of punching sheet and a second type of punching sheet arranged in an overlapping manner, and along the circumferential direction of the stator core, an overlapping portion is provided on a first side of the first type of punching sheet, a cutout portion is provided on a second side of the first type of punching sheet, an overlapping portion is provided on a second side of the second type of punching sheet, and a cutout is provided on a first side of the second type of punching sheet, and in the axial direction of the stator core, two adjacent overlapping portions are located on both sides of the cutout portion and surround a gap, and in two adjacent split cores, the overlapping portion of one split core is inserted into the gap of the other split core.

[0065] In this technical solution, the multiple punching sheets include a first type punching sheet and a second type punching sheet, and the multiple first type punching sheets and the multiple second type punching sheets are alternately distributed along the axial direction of the stator core. Among them, along the circumferential direction of the stator core, a first side of the first type punching sheet is provided with an overlapping portion, and a second side of the first type punching sheet is provided with a notch portion, and at the same time, a first side of the second type punching sheet is provided with a notch portion, and a second side of the second type punching sheet is provided with an overlapping portion. In this way, on both sides of the notch portion in the axial direction of the stator core, the two adjacent overlapping portions can surround the gap, thereby realizing that the overlapping portion of one of the two adjacent divided cores is inserted into the gap of the other divided core, and further improving the space factor of the stator.

[0066] Specifically, when the first type punching sheet and a plurality of second type punching sheets are alternately distributed along the axial direction of the stator core, the overlapping portions of two adjacent first type punching sheets have a gap between the first sides, and the overlapping gap on the first side is directly limited to the notch of the second type punching sheet between the two first type punching sheets. Correspondingly, the overlapping portions of two adjacent second type punching sheets have a gap between the second sides, and the overlapping gap on the second side is directly limited to the notch of the first type punching sheet between the two second type punching sheets. By inserting the overlapping portion of one split core into the gap of another split core in this way, the purpose of improving the space factor of the stator can be achieved, and at the same time, after the insertion of all the split cores is completed, the multiple split cores can be fitted into a circle, which can further improve the space factor of the stator and further improve the motor power during the motor operation process.

[0067] A second aspect of the present application provides a motor, comprising a stator according to the first aspect of the present application, and a rotor cooperating with and rotating with the stator.

[0068] The motor provided in the present application includes the stator according to the first aspect of the present application and therefore has all the beneficial effects of the stator described above, and the description will not be repeated here.

[0069] The motor also includes a rotor disposed within and cooperating with the stator to generate rotation and output torque.

[0070] A third aspect of the present application provides a compressor, comprising the stator of the first aspect of the present application or the motor of the second aspect of the present application.

[0071] The compressor provided in the present application includes the stator described in the first aspect of the present application or the motor described in the second aspect of the present application, and therefore similarly has all the beneficial effects of the above-mentioned stators, and the description will not be repeated here.

[0072] A fourth aspect of the present application provides a vehicle, comprising the compressor of the third aspect of the present application.

[0073] The vehicle provided herein includes the compressor according to the third aspect of the present application and therefore has all the beneficial effects of said compressor as well, which will not be repeated here. Effect of the Invention

[0074] Additional aspects and advantages of the present application will be set forth in the description that follows or may be learned by practice of the present application. [Brief description of the drawings]

[0075] The above and / or additional aspects and advantages of the present application will become apparent and will be readily understood from the following detailed description of the embodiments taken in conjunction with the accompanying drawings. [Figure 1] FIG. 2 is a structural schematic diagram of a stator in one embodiment of the present application. [Diagram 2] FIG. 2 is a plan view of the stator of the embodiment shown in FIG. [Diagram 3] 2 is a partial structural schematic diagram of the stator of the embodiment shown in FIG. 1. [Figure 4] FIG. 2 is a structural schematic diagram of a first insulating member of the embodiment shown in FIG. [Diagram 5] 5 is a schematic diagram of a folded state (second state) of the first insulating member of the embodiment shown in FIG. 4. FIG. [Figure 6] 2 is a schematic diagram of an assembled structure of a first insulating member and a second insulating member of the embodiment shown in FIG. 1. FIG. [Figure 7] 5 is a schematic diagram of a first insulating member of the embodiment shown in FIG. 4 in an expanded state (first state). [Figure 8] FIG. 2 is a schematic diagram of a stator core according to one embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0076] In order to make the above objectives, features and advantages of the present application more clearly comprehensible, the present application will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that, unless there is a conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.

[0077] Although numerous specific details are set forth in the following description in order to provide a thorough understanding of the present application, the present application may also be embodied in other forms than those described herein, and therefore the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0078] Hereinafter, a stator 100, a motor, a compressor, and a vehicle according to several embodiments of the present application will be described with reference to FIGS. 1 to 8. FIG.

[0079] As shown in FIG. 1, a first embodiment of the present application provides a stator 100, which includes a stator core 110, a winding 120, and a first insulating member .

[0080] 1 and 2, the stator core 110 includes a plurality of teeth, the teeth are distributed along the circumferential direction of the stator core 110, a stator slot is formed between two adjacent teeth, the winding 120 is wound around the teeth and is located in the stator slot, and a first insulating member 130 is inserted into the gap between the winding 120 of two adjacent teeth, and at least a part of the first insulating member 130 is installed in the gap between the winding 120 of two adjacent teeth, thus effectively physically isolating the winding 120 in the stator slot and ensuring insulation reliability.

[0081] Specifically, as shown in Figures 1 to 5, the first insulating member 130 includes a first insulating portion 1310 and a second insulating portion 1320, of which the first insulating portion 1310 is connected to the second insulating portion 1320, 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, i.e., when the first insulating member 130 is in a folded state, the length of the first insulating portion 1310 folded in half is greater than the length of the second insulating portion 1320 folded in half. Compared to the symmetrical structure in which both sides have the same length in the prior art, the amount of material used for the first insulating member 130 can be reduced, thereby reducing material costs. Furthermore, within the same stator slot, the first insulating part 1310 contacts one set of windings 120, and the second insulating part 1320 contacts the other group of windings 120, i.e., the first insulating member 130 is connected to two groups of adjacent windings 120 simultaneously. In this way, the first insulating member 130 adheres to the two groups of adjacent windings 120 due to the elastic force formed by bending itself, reinforcing the fixing function, effectively solving the problem of insulation loss occurring when phase isolation is performed using only a single insulating paper in the prior art, and ensuring the insulation reliability of the first insulating member 130 while reinforcing the fixing function of the first insulating member 130.

[0082] More specifically, as shown in Fig. 1 and Fig. 5, in the process of inserting the first insulating member 130 into the gap between the windings 120 of two adjacent teeth, at least a part of the first insulating member 130 is located in the gap between the windings 120 of two adjacent teeth, thereby achieving isolation and insulation treatment for the adjacent windings 120 in the stator slot. Furthermore, the first insulating member 130 includes a first insulating part 1310 and a second insulating part 1320 connected together, and the first insulating member 130 is installed in a state where it is folded in half such that the length of the first insulating part 1310 folded in half is greater than the length of the second insulating part 1320 folded in half, thereby realizing the first insulating member 130 to form an elastic structure by folding itself in half, and thus, in the same stator slot, two first insulating members 130 in a folded state can be closely supported and fixed to the adjacent windings 120, improving the insulation reliability during the operation of the motor and improving the stability of the position fixing in the stator slot. In the prior art, when the dimension setting of the first insulating member 130 is unreasonable or the first insulating member 130 is damaged and falls off, the creepage distance between the phases of the winding 120 is insufficient, and the risk of the motor running under load is also solved. In addition, the length of the first insulating part 1310 folded in half is set to be longer than the length of the second insulating part 1320 folded in half, so that the amount of material used is small, the material cost is low, the shape is simple, the production process is easy, and the production cost is low. In addition, the material of the first insulating member 130 is set to polyphenylene sulfide (PPS), which has a high insulating effect, high temperature resistance, and high compatibility with the operating environment.

[0083] As shown in Figures 4 and 5, therefore, the stator 100 provided in the present application optimizes the first insulating member 130, i.e., optimizes the lengths of the first insulating part 1310 and the second insulating part 1320, so that it has the characteristics of high insulation reliability, excellent fixation, ease of automated production and low cost.

[0084] The second embodiment of the present application provides a stator 100, which is based on the first embodiment and is further as follows.

[0085] As shown in FIG. 1, the stator 100 further includes a second insulating member 140. The second insulating member 140 is installed in the stator slot, where the second insulating member 140 extends along the slot wall of the stator slot, and the winding 120 is connected to the teeth through the second insulating member 140. That is, the second insulating member 140 is provided along the inner wall of the stator slot, and the second insulating member 140 realizes the connection between the winding 120 and the teeth, and the first insulating member 130 is easily inserted into the stator slot limited to two adjacent cores along the axial direction of the core, thereby realizing the physical isolation of the winding 120 in the stator slot, and improving the insulation reliability of the first insulating member 130 during use.

[0086] In a specific application, the first insulating member 130 is an interphase insulating member, and the second insulating member 140 is a slot insulating member, which can be understood as follows: the windings 120 of different phases are wound around two adjacent teeth, the interphase insulating member, i.e., the insulating member is disposed between the windings 120 of different phases in two adjacent teeth to insulate the windings 120 of different phases, and the slot insulating member, i.e., the insulating member is disposed on the inner wall surface of the stator slot, so that the windings 120 are wound around the teeth through the slot insulating member to play the role of insulation.

[0087] 6 , the second insulating member 140 further includes a protrusion 1402. The protrusion 1402 and the second insulating part 1320 are disposed on the same side of the first insulating part 1310, and the first insulating part 1310 is connected to the protrusion 1402.

[0088] As shown in FIG. 6 , 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, i.e., the sum of the length of the second insulating portion 1320 and the length of the protrusion 1402 is less than that of the first insulating portion 1310. Thus, when the first insulating member 130 is installed in the stator slot, the above length setting can avoid interference between the second insulating portion 1320 and the protrusion 1402 and ensure the reliability of the assembly.

[0089] 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. Furthermore, the above dimension settings can avoid interference between the first insulating member 130 and the second insulating member 140.

[0090] Furthermore, the first insulating portion 1310 and the second insulating portion 1320 of the first insulating member 130 are located on both sides of the protrusion 1402 of the second insulating member 140, respectively. The first insulating portion 1310 and the second insulating portion 1320 have different lengths when folded in half, i.e., the length of the first insulating portion 1310 when folded in half is greater than the length of the second insulating portion 1320 when folded in half. Thus, when the first insulating portion 1310 comes into contact with the protrusion 1402 to connect, the second insulating portion 1320 cannot come into contact with the protrusion 1402 to connect. In this way, three insulating layers, consisting of the first insulating portion 1310 and the protrusion 1402, are formed between adjacent windings 120 at the bottom within the stator slot, which effectively improves the insulation reliability between the windings 120.

[0091] Specifically, as shown in FIGS. 1 and 6, in a cross section perpendicular to the axial direction of the stator core 110, the heights of the first insulating portion 1310, the second insulating portion 1320, and the protrusion 1402 are H1, H2, and H3, respectively, and the difference between H1 and H2 is set to be greater than H3. On the other hand, in the process of inserting the first insulating member 130 into the stator slot, the length of the first insulating portion 1310 folded in half is greater than the length of the second insulating portion 1320 folded in half, and the difference between the lengths of the first insulating portion 1310 and the second insulating portion 1320 is set to be 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 when folded in half is greater than the length of the second insulating portion 1320 when folded in half, and when the first insulating portion 1310 contacts and connects with the protrusion portion 1402, the second insulating portion 1320 cannot contact and connect with the protrusion portion 1402. In this way, three insulating layers, consisting of the first insulating portion 1310 and the protrusion portion 1402, are formed between adjacent windings 120 at the bottom within the stator slot, further improving the insulation reliability between the windings 120 of the first insulating member 130.

[0092] In this embodiment, further, as shown in Figures 1 and 3, insulating frames 150 are installed on both ends of the stator core 110 along the axial direction of the stator core 110. Here, the winding 120 is wound around the teeth covered by the insulating frames 150 and the second insulating member 140. The winding 120 thus forms a working area of ​​the stator 100, and is located within the stator slot, and is further inserted into the gap between the windings 120 in two adjacent teeth via the first insulating member 130, thereby achieving physical isolation of the windings 120 within the stator slot and improving the insulation reliability during the motor working process.

[0093] At the same time, the first insulating member 130 and the second insulating member 140 effectively isolate the windings 120 in the stator slots, and the insulating frames 150 installed at both ends of the stator core 110 further isolate the windings 120 at the ends of the stator core 110, improving the reliability of the connection between the windings 120 and the stator core 110.

[0094] In a specific application, the insulating frame 150 is made of an insulating material.

[0095] The third embodiment of the present application provides a stator 100, which is based on the first embodiment and is further as follows.

[0096] As shown in Figures 4 to 7, the first insulating member 130 is provided with a folding position, 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, and the first insulating member 130 can be unfolded in the first state and folded in the second state. The provision of the folding position allows the first insulating member 130 to be folded according to the folding position when folded into another device, guaranteeing the length dimensions of the first insulating part 1310 and the second insulating part 1320, improving the reliability of the structure formed after the first insulating member 130 is folded, further guaranteeing the assembly status of the first insulating member 130 and the second insulating member 140, and improving the insulating effect of the first insulating member 130 and the second insulating member 140.

[0097] Specifically, as shown in FIG. 4, FIG. 5 and FIG. 7, the first insulating member 130 can change the usage state of the first insulating member 130 according to the usage needs during the usage process. In the first state, the first insulating member 130 is unfolded, and the first insulating part 1310 and the second insulating part 1320 are installed 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 installed as a whole in a "one" shape. In the second state, the first insulating part 1310 and the second insulating part 1320 are installed opposite each other, that is, the first insulating part 1310 and the second insulating part 1320 are installed as a whole in a "U" shape. By installing the first insulating member 130 to have at least the first state and the second state, the usage form of the first insulating member 130 can be changed according to the assembly needs, and the suitability of use can be improved. 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 allows the first insulating portion 1310 and the second insulating portion 1320 to be closely attached to the two adjacent groups of windings 120 when the first insulating member 130 is inserted into the gap between the windings 120 in two adjacent tooth portions, thereby performing a fixed support function, eliminating the possibility of insulation loss occurring when phase isolation is performed using only a single insulating member, and further improving the insulation reliability between the windings 120 of the first insulating member 130.

[0098] In this embodiment, further, as shown in Figures 1 and 4, a convex portion 1312 is provided at a first end of the first insulating member 130 along the axial direction of the stator core 110, making it easier for an equipment tool to grip the first insulating member 130 and enabling the first insulating member 130 to be accurately inserted into the stator slot.

[0099] Specifically, as shown in FIG. 1, FIG. 4 and FIG. 7, in the process of inserting the first insulating member 130 into the gap between the windings 120 of two adjacent teeth, the equipment tool holds the first insulating member 130 and inserts the first insulating member 130 into the stator slot. Therefore, by providing a protrusion 1312 at the first end of the first insulating member 130 along the axial direction of the stator core 110, it is favorable for the equipment tool to stably hold the first insulating member 130, realize accurate insertion of the first insulating member 130, and further improve the automation capability of the equipment. Meanwhile, when specifically installing the first insulating member 130, as shown in FIG. 1, the equipment lifts the protrusion 1312 and inserts the first insulating member 130 downward into the stator slot.

[0100] In this embodiment, further, as shown in FIG. 1 and FIG. 7, along the axial direction of the stator core 110, the length of the stator core 110 to which the protrusion 1312 at the first end of the first insulating member 130 is removed is set as L1, and the difference in length between L2 and L1 is set to 7 mm or more. When the first insulating member 130 is attached to the stator slot, on the one hand, at least a part of the protrusion 1312 can be protruded from the stator core 110, thereby facilitating the assembly and removal of the first insulating member 130, and on the other hand, it can also ensure the dimension of the portion of the first insulating member 130 installed in the stator slot, thereby making the dimension of the first insulating member 130 installed in the stator slot equal to or greater than the dimension of the stator slot, and further ensure the insulating effect of the first insulating member 130 on the adjacent windings 120, thereby reinforcing the reliability of the insulation between the windings 120 at the ends of the stator slot.

[0101] Specifically, as shown in Figures 1, 4 and 7, during the operation of the stator 100, the process dimensions determined by the height of the windings 120 at the ends of the stator slot are taken into consideration, that is, to ensure the insulation performance of the straight segments of every two adjacent windings 120 in the stator slot, while at the same time preventing the occurrence of dielectric breakdown between the windings 120 at the ends, the length difference between L2 and L1 is set to be 7 mm or more, which effectively prevents the occurrence of dielectric breakdown between the windings 120 at the ends and enhances the insulation reliability.

[0102] 4, 5 and 7, when the first insulating member 130 is in the first state, i.e., when the first insulating member 130 is in a planar state, the convex portion 1312 at the first end of the first insulating member 130 is trapezoidal, the upper and lower bases of the convex portion 1312 are L3 and L4, respectively, and the difference between L4 and L3 is set to be 1 mm or more. In this way, it is easy for the equipment tool to grip the first insulating member 130, and the first insulating member 130 can be accurately inserted into the stator slot.

[0103] Specifically, as shown in Fig. 7, in the process of inserting the first insulating member 130 into the gap between the windings 120 of two adjacent teeth, i.e., in the process of inserting the first insulating member 130 into the stator slot, the equipment tool performs a gripping operation on the first insulating member 130 and inserts the first insulating member 130 into the stator slot. Therefore, when the first insulating member 130 is in the first state, the upper and lower bases of the convex portion 1312 are set to L3 and L4, respectively, and the difference between L3 and L4 is set to 1 mm or more. This is advantageous for the equipment tool to stably grip the first insulating member 130, realizes accurate insertion into the first insulating member 130, and further improves the automation capability of the equipment.

[0104] Specifically, the difference between L4 and L3 is 1 mm or more and 10 mm or less, and more preferably, the difference between L4 and L3 is 2 mm or more and 5 mm or less.

[0105] In this embodiment, further, as shown in Figures 4 and 7, by setting the height of the convex portion 1312 of the first insulating member 130 within a certain range, it is advantageous to improve the operability of the gripping operation of the equipment tool, and further improve the gripping operation efficiency of the equipment tool.

[0106] 4 and 7, in the process of inserting the first insulating member 130 into the stator slot, the gripping operation is performed by equipment and tools, and if the height of the convex portion 1312 of the first insulating member 130 is set too short, it will affect the operability of the equipment and tools in the gripping operation, so the height of the convex portion 1312 is set between 2.5 mm and 15 mm, at which time the gripping efficiency of the equipment and tools is the highest and the automation ability of the equipment is the strongest. Meanwhile, the specific height of the convex portion 1312 can be actually determined according to the process.

[0107] In a specific application, the height of the protrusion is 5 mm or more and 10 mm or less. Moreover, the height of the protrusion is 6 mm, 7 mm, 8 mm or 9 mm.

[0108] In this embodiment, as shown in Figs. 1, 3, 4 and 7, 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 is provided opposite the recess 1314. That is, one axial end of the first insulating member 13 includes one trapezoidal protrusion 1312, and the other axial end includes one trapezoidal recess 1314 having the same shape and dimensions as the trapezoidal protrusion 1312. The protrusion 1312 makes it easy for the equipment tool to grip the first insulating member 130, and the recess 1314 prevents the first insulating member 130 from colliding with the insulating frame 150 when it is inserted into the stator slot. This allows the first insulating member 130 to be accurately inserted into the stator slot, and further improves the automation capability of the equipment.

[0109] In this embodiment, further, as shown in Figures 1, 4, 5 and 7, the center lines of the convex portion 1312 and the concave portion 1314 of the first insulating member 130 are arranged to overlap, so that in the process of folding the first insulating member 130 in half, the convex portion 1312 and the concave portion 1314 can be folded in half along the center line, which further ensures the straightness of the entire first insulating member 130, thereby improving the smoothness and accuracy of the process of the first insulating member 130 being inserted into the stator slot along the axial direction.

[0110] 1, 4, 5 and 7, the shape of the convex portion 1312 and the concave portion 1314 of the first insulating member 130 are set to be the same, and the center lines of the convex portion 1312 and the concave portion 1314 can be overlapped, and the convex portion 1312 and the concave portion 1314 can be folded in half along the center line, thereby improving the smoothness and accuracy of the process of inserting the first insulating member 130 into the stator slot along the axial direction. At the same time, since the shape of the convex portion 1312 and the concave portion 1314 are the same, the structure is simpler, the production and processing are easier, and the production cost is effectively reduced.

[0111] In this embodiment, further as shown in FIGS. 4 to 7, the first insulating member 130 further includes a transition portion 1330 .

[0112] As shown in Figures 4 and 6, the first insulating part 1310 and the second insulating part 1320 are connected via a transition part 1330, i.e., the first insulating part 1310 and the second insulating part 1320 are connected together via the transition part 1330, and a folding position is provided in the transition part 1330. In this way, the first insulating part 1310 and the second insulating part 1320 can be folded in half along the folding position, so that the length of the first insulating part 1310 folded in half is greater than the length of the second insulating part 1320 folded in half. Compared with the symmetrical structure in which both sides have the same length in the prior art, the amount of material used for the first insulating member 130 can be reduced, thereby reducing material costs. At the same time, the first insulating portion 1310 and the second insulating portion 1320 are folded in half along the folding position, so that a transition portion 1330 that is an arc-shaped transition portion 1330 is formed at the transition portion 1330 where the first insulating portion 1310 and the second insulating portion 1320 are folded in half. That is, the transition portion 1330 where the first insulating member 130 is folded in half along the folding position exhibits a “U” shape. Due to the bending of the first insulating member 130 when folded in half, a supporting elastic force exists between the first insulating portion 1310 and the second insulating portion 1320. When the first insulating member 130 is inserted into the gaps between the windings 120 of two adjacent teeth, the first insulating portion 1310 and the second insulating portion 1320 can be brought into close contact with the two groups of adjacent windings 120 by the elastic force of the first insulating member 130, respectively, which reinforces the fixing action and thereby improves the reliability of insulation.

[0113] The fourth embodiment of the present application provides a stator 100, which is based on the first embodiment and is further as follows.

[0114] By setting the number of first insulating members 130 to multiple numbers, it is possible to have at least some of the stator slots each include one first insulating member 130, and further to physically isolate the windings 120 within the stator slots, thereby ensuring insulation reliability.

[0115] Specifically, as shown in FIG. 1, the number of stator slots can be set to be the same as 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 during operation of the motor. 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, and each stator slot includes one first insulating member 130, thereby optimizing the insulation isolation state of the first insulating members 130 in the stator slots and ensuring the insulation reliability.

[0116] As will be appreciated, the number of first insulating members 130 may be less than the number of stator slots.

[0117] In this embodiment, further, as shown in Figures 1 to 7, the thickness of the first insulating member 130 is set between 0.25 mm and 0.3 mm, i.e., the thicknesses of the first insulating portion 1310 and the second insulating portion 1320 are set to be greater than or equal to 0.25 mm and less than or equal to 0.3 mm, thereby ensuring the dielectric strength requirement between adjacent windings 120 in the stator slot. In addition, by setting the thickness range of the first insulating member 130, on the one hand, it is possible to prevent dielectric breakdown from occurring between adjacent windings 120, thereby reinforcing the insulation reliability; on the other hand, by setting the thickness range of the first insulating member 130, when the first insulating member 130 is folded in half, the elastic force of the first insulating member 130 itself after being folded in half, i.e., the supporting elastic force between the first insulating portion 1310 and the second insulating portion 1320, can be improved; and further, when the first insulating member 130 is inserted into the gap between the windings 120 in two adjacent tooth portions, it can adhere to the two groups of adjacent windings 120 by its own elastic force, thereby reinforcing the fixing action and thereby improving the insulation reliability.

[0118] The fifth embodiment of the present application provides a stator 100, which is based on the first embodiment and is further as follows.

[0119] As shown in Figures 1, 2 and 3, the stator core 110 is installed to include a plurality of split cores 1102. Among them, the plurality of split cores 1102 are sequentially connected along the circumferential direction of the stator core 110, and thus a stator slot can be defined between every two adjacent stator cores 110, and the stator slots are arranged in the circumferential direction along the axial direction of the stator core 110, the windings 120 are wound around the teeth and located in the stator slots, and at the same time, the first insulating members 130 are similarly arranged along the circumferential direction of the motor and correspondingly inserted into the stator slots, which physically isolates the windings 120 in the stator slots and achieves insulation reliability.

[0120] As shown in FIG. 8 , the stator core 110 further includes a plurality of split cores 1102. When winding the windings 120, the windings 120 can be wound around each of the split cores 1102 respectively. After the windings around all of the split cores 1102 are completed, the plurality of split cores 1102 are aligned in a circle. This installation method effectively improves the space factor of the stator 100.

[0121] In this embodiment, further, as shown in Figures 1 to 3, each split core 1102 includes a plurality of punched sheets, which are stacked and distributed along the axial direction of the stator core 110, and thus an overlapping portion 1104 is formed on the peripheral edge of the punched sheets. When the plurality of punched sheets are stacked and distributed along the axial direction of the core, overlapping gaps are defined between adjacent punched sheets and formed in the stator slot, so that the winding 120 is easily wound around the tooth portion and is located in the stator slot. When the first insulating member 130 is inserted into the gap between the winding 120 in two adjacent teeth, it effectively physically isolates the winding 120 in the stator slot, and ensures insulation reliability.

[0122] Specifically, the punched sheet is a silicon steel plate.

[0123] In this embodiment, further, as shown in Figures 1 to 3, the multiple punching sheets include a first type of punching sheet and a second type of punching sheet, and the multiple first type of punching sheets and the multiple second type of punching sheets are alternately distributed along the axial direction of the stator core 110. Among them, along the circumferential direction of the stator core 110, a first side of the first type of punching sheet is provided with an overlapping portion 1104, and a second side of the first type of punching sheet is provided with a notch portion; at the same time, a first side of the second type of punching sheet is provided with a notch portion, and a second side of the second type of punching sheet is provided with an overlapping portion 1104. In this way, in the axial direction of the stator core 110, two adjacent overlapping portions 1104 can surround the gap on both sides of the cutout portion, thereby enabling the overlapping portion 1104 of one of the two adjacent split cores 1102 to be inserted into the gap of the other split core 1102, further improving the space factor of the stator.

[0124] Specifically, when a plurality of first-class punching sheets 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 their first sides, and the overlapping gap on the first side is directly limited to the cutout of the second-class punching sheet between the two first-class punching sheets. Correspondingly, the overlapping portions 1104 of two adjacent second-class punching sheets have a gap between their second sides, and the overlapping gap on the second side is directly limited to the cutout of the first-class punching sheet between the two second-class punching sheets. In this way, by inserting the overlapping portions 1104 of one split core 1102 into the gaps between the other split cores 1102, the purpose of improving the space factor of the stator can be achieved; at the same time, after the insertion of all the split cores 1102 is completed, the multiple split cores 1102 can be fitted into a circle, which can further improve the space factor of the stator and also improve the motor power during the operation of the motor.

[0125] In a specific embodiment, the cutout is formed by a blanking method, that is, the cutout may be formed by cutting out a part of the material from the second side of the first type of punched sheet, or the cutout may be formed by cutting out a part of the material from the first side of the second type of punched sheet.

[0126] A sixth embodiment of the present application provides a motor, including the stator 100 according to any one of the first to fifth embodiments, and a rotor that cooperates with the stator 100 and rotates.

[0127] The motor provided in the present application includes the stator 100 according to any one of the embodiments 1 to 5, and thus has all the beneficial effects of the stator 100 described above, i.e., the lengths of the first insulating part 1310 and the second insulating part 1320 are optimized, and the length has the characteristics of high insulation reliability, excellent fixation, easy automated production and low cost, and the amount of material used for the first insulating member 130 can be reduced and the material cost can be reduced compared with the symmetrical structure in which both sides have the same length in the prior art. Furthermore, in the prior art, if the dimension setting of the first insulating member 130 is unreasonable or the first insulating member 130 is damaged or falls off, the creepage distance between the phases of the winding 120 will be insufficient, which will further create the risk of the motor running under load, and the structure of the first insulating member 130 is complicated and the processing cost is high. A detailed description will be omitted here.

[0128] The motor also includes a rotor, which is disposed within the stator 100 and cooperates with the stator to generate rotation and output torque.

[0129] A seventh embodiment of the present application provides a compressor, comprising the motor according to the sixth embodiment.

[0130] The compressor provided in the present application includes the motor described in the sixth embodiment, and thus has all the beneficial effects of the stator 100 described above, i.e., the lengths of the first insulating part 1310 and the second insulating part 1320 are optimized, and the first insulating part 1310 and the second insulating part 1320 are provided with the characteristics of high insulation reliability, excellent fixation, easy automated production and low cost. Compared with the symmetrical structure in which both sides have the same length in the prior art, the amount of material used for the first insulating member 130 can be reduced, and the material cost can be reduced. Furthermore, in the prior art, if the dimension setting of the first insulating member 130 is unreasonable or the first insulating member 130 is damaged or falls off, the creepage distance between the phases of the winding 120 will be insufficient, which will further create the risk of the motor running under load, and the structure of the first insulating member 130 is complicated, which will result in high processing costs. A detailed description will be omitted here.

[0131] An eighth embodiment of the present application provides a vehicle, comprising the compressor according to the seventh embodiment.

[0132] The vehicle provided in the present application includes the compressor described in Example 7, and therefore has all the beneficial effects of that compressor as well, and the description will not be repeated here.

[0133] Specific Examples As shown in FIGS. 1 to 7 , one specific embodiment of the present application 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.

[0134] Specifically, as shown in Figures 1 to 3, taking a motor with stator slot number Q = 12 as an example, the first insulating member 130 is inserted into the stator slot limited to two adjacent cores along the axial direction of the core, the second insulating member 140 is provided along the inner wall of the stator slot, insulating frames 150 are arranged on both sides of the axial end face of the stator core 110, the windings 120 wound around the insulating frames 150 are arranged in the stator slots, and the first insulating member 130 is laid out along the circumferential direction of the motor to physically isolate the windings 120 in the stator slots, thereby ensuring the insulation reliability of the first insulating member 130.

[0135] 4 to 6, one side of the first insulating member 130 folded in half is longer than the other side, i.e., 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 located on both sides of the protruding portion 1402 of the second insulating member 140, respectively, a circular arc-shaped transition portion 1330 is formed at the junction of the first insulating portion 1310 and the second insulating portion 1320 folded in half, and the outsides 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 which both sides have the same length in the prior art, the amount of material used for the first insulating member 130 can be reduced, thereby reducing material costs.

[0136] In a specific application, the first insulating member 130 is an interphase insulating member, and the second insulating member 140 is a slot insulating member, which can be understood as follows: the windings 120 of different phases are wound around two adjacent teeth, the interphase insulating member, i.e., the insulating member is disposed between the windings 120 of different phases in two adjacent teeth to insulate the windings 120 of different phases, and the slot insulating member, i.e., the insulating member is disposed on the inner wall surface of the stator slot, so that the windings 120 are wound around the teeth through the slot insulating member to play the role of insulation.

[0137] Furthermore, within the same stator slot, the first insulating part 1310 contacts one set of windings 120, and the second insulating part 1320 contacts the other set of windings 120, i.e., the first insulating member 130 is connected to two adjacent sets of windings 120 at the same time, and thus the first insulating member 130 adheres to the two adjacent sets of windings 120 by the elastic force formed by folding itself, reinforcing the fixing function, effectively solving the problem of insulation loss occurring when phase isolation is performed using only a single insulating paper in the prior art, ensuring the insulation reliability of the first insulating member 130 and reinforcing the fixing function of the first insulating member 130. Moreover, the length of the first insulating part 1310 folded in half is greater than the length of the second insulating part 1320 folded in half, thus resulting in less material usage, lower material costs, a simple shape, easy production and processing, and low production costs.

[0138] Specifically, as shown in FIG. 7 , one axial end of the first insulating member 130 includes one trapezoidal convex portion 1312, and the other axial end includes one trapezoidal concave portion 1314 having the same shape and dimensions as the trapezoidal convex portion 1312, the trapezoidal convex portion 1312 overlaps with the center line of the trapezoidal concave portion 1314, and the first insulating member 130 fixes the convex portion 1312 by an apparatus and inserts the concave portion 1314 into the stator slot along the axial direction.

[0139] Specifically, as shown in FIG. 1 and FIG. 6, the height difference between the first insulating part 1310 and the second insulating part 1320 is greater than the protrusion height of the second insulating member 140 into the slot, i.e., the height of the protrusion 1402, and the three-layer insulation formed by the first insulating member 130, the first insulating part 1310 and the protrusion 1402 of the second insulating member 140 into the slot at the bottom of the stator slot can ensure the isolation of the windings 120. This is because the spacing of the windings 120 at the bottom of the stator slot of the motor is close, so the three-layer insulation can further improve the reliability of the interphase insulation. At the same time, the first insulating member 130 can ensure the isolation of the windings 120. This prevents interference between the second insulating part 1320 and the protrusion 1402 in the second insulating member 140 when the winding is inserted into a lot, and the second insulating part 1320 and the first insulating part 1310 form a two-layer insulating space, which ensures insulation reliability, and at the same time allows the second insulating part 1320 to adhere to the adjacent winding 120 due to the elastic force formed by bending the winding itself, thereby performing a fixing function, and eliminates the possibility of insulation loss occurring when phase isolation is performed using only a single insulating paper. At the same time, one side of the first insulating member 130 is longer than the other side, which reduces the amount of material used for the first insulating member 130 and reduces material costs compared to a symmetrical structure in which both sides are the same length.

[0140] 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. Furthermore, the above dimension settings can avoid interference between the first insulating member 130 and the second insulating member 140.

[0141] Specifically, as shown in FIG. 1 and FIG. 7, the axial length of the stator core 110 is L1, and the axial length of the first insulating member 130 excluding the protruding portion 1312 is L2, which satisfies L2≧L1+7mm, where 7mm is a process dimension determined taking into consideration the height of the windings 120 at the ends; that is, when the first insulating member 130 is installed in the stator slot, at least a part of the protruding portion 1312 can be protruded from the stator core 110, which is convenient for the assembly and removal of the first insulating member 130, and at the same time, it can further ensure the dimension of the part of the first insulating member 130 installed in the stator slot, so that the dimension of the first insulating member 130 installed in the stator slot is equal to or greater than the dimension of the stator slot, which further ensures the insulating effect of the first insulating member 130 on the adjacent windings 120, thus ensuring the insulating performance of the straight segments of the two groups of windings 120 in the stator slot, and at the same time, preventing insulation breakdown from occurring between the adjacent windings 120 at the ends, and improving insulation reliability.

[0142] Specifically, as shown in Fig. 1 and Fig. 7, the height of the trapezoidal convex part 1312 is 3mm or more, and in a specific application, the height of the convex part is 5mm or more and 10mm or less. Furthermore, the height of the convex part is 6mm, 7mm, 8mm or 9mm. The length of the trapezoidal upper base of the convex part 1312 of the first insulating member 130 is shorter than the trapezoidal lower base of the convex part 1312 by 1mm, which is convenient for the equipment tool to hold and insert the first insulating member 130 into the stator slot along the axial direction, thereby improving the automation ability and simplicity of the equipment, and if the convex part 1312 is too short, it will affect the operability of the equipment, and the trapezoidal height of the convex part 1312, 3mm, is actually determined according to the process, and the concave part 1314 can avoid collision interference with the insulating frame 150 when the first insulating member 130 is inserted.

[0143] In addition, the number of first insulating members 130 does not exceed the number of stator slots of the motor. Specifically, in this embodiment, the number of stator slots 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 one first insulating member 130, and at this time, the insulation effect of the interphase winding 120 in each stator slot is high.

[0144] In addition, the thickness of one side of the first insulating member 130 is 0.25 mm or more and 0.3 mm or less, so that the dielectric strength requirement between the phase windings 120 in the stator slots can be guaranteed.

[0145] Moreover, the material of the first insulating member 130 is polyphenylene sulfide (PPS), which has a high insulating effect, is resistant to high temperatures, and is highly compatible with the operating environment.

[0146] As described above, in the stator 100 provided by the specific embodiment of the present application, the stator core 110 includes a plurality of teeth, and the plurality of teeth are distributed along the circumferential direction of the stator core 110, a stator slot is formed between two adjacent teeth, and the winding 120 is wound around the teeth and located in the stator slot. In addition, a first insulating member 130 is inserted into the gap between the winding 120 of two adjacent teeth, and at least a part of the first insulating member 130 is installed to be located in the gap between the winding 120 of two adjacent teeth, thus physically isolating the winding 120 in the stator slot and ensuring the insulation reliability. One side of the first insulating member 130 folded in half is longer than the other side, i.e., 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 protrusion 1402 of the second insulating member 140, and an arc-shaped transition portion 1330 is formed at the halved connection point of the first insulating portion 1310 and the second insulating portion 1320, and the outsides 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, i.e., by optimizing the lengths of the first insulating portion 1310 and the second insulating portion 1320, it has the characteristics of high insulation reliability, excellent fixation, ease of automated production and low cost.

[0147] In this application, the term "plurality" means two or more than two, unless otherwise specified. The terms "attached," "coupled," "connected," "fixed," and the like should all be understood in a broad sense, for example, "connected" may mean fixedly connected, detachably connected, or integrally connected. "Coupled" may mean directly connected, or indirectly connected via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation.

[0148] In the description herein, the recitation of terms such as "one embodiment," "some embodiments," "particular embodiments," and the like means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present application. In the present specification, exemplary expressions of such 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.

[0149] The above description is merely a preferred embodiment of the present application, and does not limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included within the protection scope of the present application. [Explanation of symbols]

[0150] The correspondence between the reference numerals and the part names in Figs. 1 to 8 is as follows: 100...stator, 110...stator core, 1102...split 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 portion, 140...second insulating member, 1402...projection portion, 150...insulating frame.

Claims

1. A stator core including a plurality of teeth, the plurality of teeth being distributed along a circumferential direction of the stator core, and having a stator slot between two adjacent teeth; a winding wound around the tooth and extending into the stator slot; a first insulating member, at least a portion of which is located in a gap between the windings of two adjacent teeth, the first insulating member including a first insulating portion and a second insulating portion which are connected together, the first insulating portion contacting one set of the windings and the second insulating portion contacting another set of the windings within the same stator slot; a second insulating member provided within 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 via the second insulating member; the second insulating member includes a protruding portion, the second insulating portion and the protruding portion are located on the same side of the first insulating portion, and the first insulating portion is connected to the protruding portion; A stator, in a cross section perpendicular to the axial direction of the stator core, a length of the first insulating portion is greater than a length of the second insulating portion, the length of the first insulating portion is H1, the length of the second insulating portion is H2, the height of the protrusion portion is H3, and the difference between H1 and H2 is greater than H3.

2. 2. The stator according to claim 1, further comprising an insulating frame provided at both ends of the stator core along the axial direction of the stator core, the winding being wound around the teeth after being covered with the insulating frame and the second insulating member.

3. The first insulating member has a folded position, and the first insulating member has at least a first state and a second state; 3. The stator according to claim 1, wherein in the first state, the first insulating member is unfolded and the first insulating portion and the second insulating portion are arranged adjacent to each other, and in the second state, the first insulating member is folded along the folding position to arrange the first insulating portion and the second insulating portion opposite each other.

4. 4. The stator according to claim 3, wherein a protrusion is provided at a first end of the first insulating member along the axial direction of the stator core for inserting the first insulating member into the stator slot.

5. 5. The stator according to claim 4, wherein along the axial direction of the stator core, a length of the stator core is L1, a difference between a length of the first insulating member and a length of the convex portion is L2, and a length obtained by subtracting L1 from L2 is 7 mm or more.

6. 5. The stator according to claim 4, wherein in the first state, the convex portion is trapezoidal, an upper base of the convex portion is L3, a lower base of the convex portion is L4, and a difference between L4 and L3 is 1 mm or more.

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

8. The stator according to claim 4 , wherein a recess is provided at the second end of the first insulating member along the axial direction of the stator core, and the recess and the protrusion are disposed opposite to each other.

9. The recess overlaps the centerline of the protrusion, and / or The stator according to claim 8 , wherein the recessed portion has the same shape as the protruding portion.

10. The stator of claim 3 further comprising a transition portion, the first insulating portion and the second insulating portion being connected by the transition portion, and the folding location being disposed at the transition portion.

11. In a radial direction of the stator core, the transition portion is located radially inward with respect to the first insulating portion and the second insulating portion, the first insulating portion is located on one side of the protruding portion in a circumferential direction of the stator core, The stator of claim 10 , wherein the protrusion is connected to an end of the first insulating portion opposite the transition portion.

12. The stator according to claim 1 , wherein the number of the stator slots is plural, and the first insulating member is provided in at least some of the stator slots.

13. 3. The stator according to claim 1, wherein the first insulating member has a thickness of 0.25 mm or more and 0.3 mm or less.

14. The stator according to claim 1 or 2, wherein the stator core includes a plurality of split cores, the plurality of split cores being connected in sequence along a circumferential direction of the stator core.

15. The stator according to claim 14 , wherein any one of the divided cores includes a plurality of punched sheets, and the plurality of punched sheets are stacked and distributed along the axial direction of the stator core.

16. In the same divided core, the plurality of punching sheets include a first type of punching sheet and a second type of punching sheet that are arranged in a stacked manner, An overlapping portion is provided on a first side of the first type punching sheet along a circumferential direction of the stator core, and a cutout portion is provided on a second side of the first type punching sheet, The overlapping portion is provided on a second side of the second type punching sheet, and the cutout portion is provided on a first side of the second type punching sheet, 16. The stator of claim 15, wherein in the axial direction of the stator core, two adjacent overlapping portions are located on either side of the cutout portion and surround the cutout portion to form a gap, and among two adjacent split cores, the overlapping portion of one split core is inserted into the gap of the other split core.

17. The stator according to claim 1 ; a rotor which cooperates with and rotates with the stator.

18. A stator according to claim 1, or A compressor comprising the motor of claim 17.

19. A vehicle comprising the compressor of claim 18.

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