Insulating end plate, stator, motor and compressor

Abstract

The utility model discloses an insulation end plate, stator, motor and compressor, relates to motor technical field, the insulation end plate comprises an outer peripheral wall, a plurality of inner peripheral walls arranged on the outer periphery of the outer peripheral wall and tooth portions, each tooth portion is respectively connected with the outer peripheral wall and one inner peripheral wall, the plurality of inner peripheral walls are arranged at intervals to form a circle, and the inner peripheral walls are arranged on the inner periphery of the outer peripheral wall. K1 lead wire parts are arranged on the peripheral wall, K2 wire clamping grooves are formed in each lead wire part, and the ratio of K2 to K1 is larger than or equal to 0.5 and smaller than or equal to 2. According to the technical scheme provided by the utility model, the production efficiency can be improved while the contact resistance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an insulating end plate, a stator, a motor and a compressor. Background Art

[0002] As a power source for electrical appliances or various machines, the main function of the motor is to convert mechanical energy into electrical energy. The motor mainly includes: a stator and a rotor. The stator is provided with a coil, and the rotor is provided with a magnet. The rotation of the rotor is achieved by the cooperation of the magnet and the coil.

[0003] The stator consists of a stator core and insulating end plates. The insulating end plates are attached to the stator core of the motor and are used to connect the coils wound around the stator core. However, the insulating end plates currently on the market not only have high contact resistance but also low production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide an insulating end plate, a stator, a motor and a compressor, aiming to reduce contact resistance while improving production efficiency.

[0005] To achieve the above-mentioned purpose, the insulating end plate proposed in the present invention is used for a stator, wherein the stator includes a stator core, and the insulating end plate includes:

[0006] An outer peripheral wall, wherein the outer peripheral wall is provided with K1 lead portions, each of the lead portions is provided with K2 wire clamping grooves, and 0.5≤K2 / K1≤2;

[0007] a plurality of teeth, the plurality of teeth being located on the inner periphery of the outer peripheral wall; and

[0008] A plurality of inner peripheral walls are provided on the inner periphery of the outer peripheral wall, and each of the teeth is connected to the outer peripheral wall and one of the inner peripheral walls, and the plurality of inner peripheral walls are spaced apart and arranged in a circle.

[0009] In one embodiment, the number K1 of the lead portions is in the range of 2≤K1≤4.

[0010] In one embodiment, the lead portion is provided with a terminal groove, K2 wire-holding grooves are connected through the terminal groove, the intersection of the outer groove wall of the terminal groove and the center line of the wire-holding groove is A, the center of the outer peripheral wall is B, the distance between A and B is D1, the diameter of the maximum outer contour circle of the stator core is D2, 5mm≤D2-2D1≤10mm.

[0011] In one embodiment, a cross section of the lead portion in a radial direction is square, and a length direction of the lead portion extends toward a tangent direction of the outer peripheral wall.

[0012] In one embodiment, the end of the outer slot wall of the terminal slot away from the stator core is marked as C, the end of the lead portion close to the stator core is marked as D, the distance between C and D is h1, the end of the inner slot wall of the terminal slot away from the stator core is marked as E, the slot bottom of the terminal slot is marked as F, the distance between E and F is h2, 3mm≤h1-h2≤10mm.

[0013] In one embodiment, the width of the wire clamping groove is W, and 0.5 mm ≤ W ≤ 1.1 mm.

[0014] In one embodiment, the outer peripheral wall is provided with a plurality of through holes, the maximum width of the through holes in the axial direction of the outer peripheral wall is M1, the minimum distance between two adjacent through holes is M2, and 0.2≤M1 / M2≤5.

[0015] In one embodiment, a minimum distance between an end surface of the outer peripheral wall away from the stator core and the through hole is M3, and 0.5≤M1 / M3≤10.

[0016] In one embodiment, a minimum distance between a connecting line between the outer peripheral wall and the tooth portion and the through hole is M4, and 0.1≤M1 / M4≤3.

[0017] The present invention further provides a stator, comprising a stator core and the above-mentioned insulating end plate, wherein the insulating end plate is arranged at the end of the stator core.

[0018] The utility model also provides a motor, comprising the above-mentioned stator.

[0019] The utility model also provides a compressor, comprising the above-mentioned motor.

[0020] The technical solution of the present invention simplifies the production process and reduces the number of personnel assigned to specific positions by providing K1 lead parts on the insulating end plate and providing K2 wire slots on the lead parts for external lead wires to pass through for electrical connection with the terminals. It can be understood that the greater the number of wire slots, the fewer external lead wires can be passed through a single wire slot, reducing the contact resistance of the external lead wires, thereby reducing temperature rise and improving the stability and performance of the circuit. However, the increase in the number of wire slots will increase the number of processing steps, which will affect the manufacturing time of the insulating end plate. Moreover, the wire slots are provided on the lead parts, and the number of lead parts will also affect the total number of wire slots, thereby affecting the contact resistance and processing steps. The present solution limits the ratio of K2 to K1 to between 1 and 2 through reasonable planning, thereby balancing the contact resistance and the manufacturing time of a single insulating end plate, thereby reducing the manufacturing time of a single insulating end plate while reducing the contact resistance and improving the production efficiency of the insulating end plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural schematic diagram of an embodiment of an insulating end plate provided by the present invention from a first perspective;

[0023] Figure 2 for Figure 1 A local enlarged view of point a in the middle;

[0024] Figure 3 This is a structural schematic diagram of an embodiment of an insulating end plate provided by the present invention from a second perspective;

[0025] Figure 4 for Figure 3 A partial enlarged view of point b in the middle;

[0026] Figure 5 This is a schematic diagram of a first partial structure of the insulating end plate provided by the utility model;

[0027] Figure 6 A schematic diagram of a second partial structure of the insulating end plate provided by the present invention;

[0028] Figure 7 for Figure 6 A schematic cross-sectional structural diagram of a second portion of the insulating end plate;

[0029] Figure 8 Schematic diagram of the relationship between K2 / K1, contact resistance, and manufacturing time of a single insulating end plate 10;

[0030] Figure 9 Schematic diagram of the relationship between the strength and safety distance between D2-2D1 and the insulating end plate;

[0031] Figure 10 Schematic diagram of the relationship between M1 / M2, the strength of the insulating end plate, and the wire binding rhythm of a single insulating end plate;

[0032] Figure 11 Schematic diagram of the relationship between M1 / M3 and the strength of the insulating end plate and the wire binding rhythm of a single insulating end plate;

[0033] Figure 12 Schematic diagram of the relationship between the strength of M1 / M4 and the insulating end plate and the wire binding rhythm of a single insulating end plate.

[0034] Description of Figure Numbers:

[0035] 10. Insulating end plate; 100. Outer wall; 110. Lead portion; 111. Wire clamping groove; 112. Terminal groove; 120. Through hole; 200. Tooth portion; 300. Inner wall.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The utility model provides an insulating end plate 10 .

[0041] See also Figure 1 and Figure 2In one embodiment of the present invention, the insulating end plate 10 is used for a stator, and the stator includes a stator core. The insulating end plate 10 includes an outer peripheral wall 100, a plurality of inner peripheral walls 300 and a tooth portion 200 arranged on the inner periphery of the outer peripheral wall 100, each of the tooth portions 200 is respectively connected to the outer peripheral wall 100 and one of the inner peripheral walls 300, and the plurality of inner peripheral walls 300 are spaced apart to form a circle. The outer peripheral wall 100 is provided with K1 lead portions 110, and each of the lead portions 110 is provided with K2 wire clamping grooves 111. The ratio range of K2 to K1 is: 0.5≤K2 / K1≤2.

[0042] The technical solution of the present invention simplifies the production process and reduces the number of personnel assigned to posts by arranging K1 lead parts 110 on the insulating end plate 10 and arranging K2 wire clamping grooves 111 on the lead parts 110 for the external lead wires to pass through so as to be electrically connected to the terminals. It can be understood that the more wire-holding slots 111 there are, the fewer external lead-out wires can be passed through a single wire-holding slot 111, thereby reducing the contact resistance of the external lead-out wires, and further reducing the temperature rise, thereby improving the stability and performance of the circuit. However, as the number of wire-holding slots 111 increases, the number of processing techniques will increase, thereby affecting the manufacturing time of the insulating end plate 10. Moreover, the wire-holding slots 111 are arranged on the lead portion 110, and the number of lead portions 110 will also affect the total number of wire-holding slots 111, and will also affect the contact resistance and processing technique. This solution limits the ratio of K2 to K1 to between 1 and 2 through reasonable planning, thereby balancing the contact resistance and the manufacturing time of a single insulating end plate 10, thereby reducing the manufacturing time of a single insulating end plate 10 while reducing the contact resistance, and improving the production efficiency of the insulating end plate 10.

[0043] It should be noted that Figure 8 The relationship between K2 / K1 and the contact resistance and the manufacturing time of a single insulating end plate 10 is shown in FIG. Figure 8 It can be seen that when the ratio of K2 to K1 is less than 0.5, as the ratio of K2 to K1 increases, the contact resistance decreases significantly. When the ratio of K2 to K1 is greater than 0.5, as the ratio of K2 to K1 increases, the contact resistance also gradually decreases, but the reduction rate slows down. When the ratio of K2 to K1 is less than 2, as the ratio of K2 to K1 increases, the manufacturing time of a single insulating end plate 10 tends to increase, but the increase is slow. When the ratio of K2 to K1 is greater than 2, as the ratio of K2 to K1 increases, the manufacturing time of a single insulating end plate 10 also tends to increase, but the increase is sharp. Therefore, this solution limits the ratio of K2 to K1 to between 0.5 and 2, which is beneficial to reducing the contact resistance while reducing the manufacturing time of a single insulating end plate 10 and improving the production efficiency of the insulating end plate 10.

[0044] Specifically, the motor stator includes a stator core and a coil, and the motor stator is used to generate a rotating magnetic field. The stator core is made of laminated silicon steel plates. The stator core includes a stator yoke and stator teeth. The stator yoke is annular, and a plurality of stator teeth are arranged on the inner side of the stator yoke at intervals along the circumference of the stator yoke. Stator slots are defined between adjacent stator teeth, and the number of stator slots is consistent with the number of stator teeth. The coil includes a winding body, a winding joint and a transition section. The winding body passes through the stator slots and is directly wound on the stator teeth. The winding joint is used to connect to the external lead wire to electrically connect to the external circuit. The motor stator is used to be mounted on the outer periphery of the motor rotor. When three-phase alternating current is passed through the coil, a rotating magnetic field is generated, and the permanent magnets on the motor rotor interact with the rotating magnetic field to generate torque, thereby driving the motor to rotate to achieve normal operation of the motor.

[0045] Furthermore, in this solution, the number K1 of the lead portions 110 is in the range of 2≤K1≤4, which can further reduce the contact resistance while reducing the manufacturing time of a single insulating end plate 10 and improving the production efficiency of the insulating end plate 10.

[0046] Reference Figure 4 and Figure 9 Furthermore, the lead portion 110 is provided with a terminal groove 112, and K2 wire-holding grooves 111 are connected through the terminal groove 112. The intersection of the outer groove wall of the terminal groove 112 and the center line of the wire-holding groove 111 is A, the center of the outer peripheral wall 100 is B, the distance between A and B is D1, the diameter of the maximum outer contour circle of the stator core is D2, and the range of the difference between D2 and 2D1 is: 5mm≤D2-2D1≤10mm.

[0047] It can be understood that a terminal slot 112 is provided in the lead portion 110 for inserting the terminal, and the terminal slot 112 is connected to K2 of the wire-holding slots 111. Therefore, when the terminal is inserted into the terminal slot 112, the terminal will be electrically connected to the external lead-out wire passing through the wire-holding slot 111. When the diameter of the maximum outer contour circle of the stator core and the outer diameter of the outer peripheral wall 100 remain unchanged, and the greater the distance between A and B, the smaller the difference D2-2D1, and the safe distance between the terminal slot 112 and the stator core will increase. At this time, the wall thickness of the outer wall 100 of the insulating end plate 10 will also decrease, thereby gradually reducing the strength of the insulating end plate 10. Conversely, when the diameter of the maximum outer contour circle of the stator core and the outer diameter of the outer wall 100 remain unchanged, and the smaller the distance between A and B, the greater the difference D2-2D1, the safe distance between the terminal slot 112 and the stator core will decrease, and the wall thickness of the outer wall 100 of the insulating end plate 10 will also increase, thereby gradually increasing the strength of the insulating end plate 10.

[0048] Reference Figure 9 , Figure 9Schematic diagram of the relationship between the strength and safety distance between D2-2D1 and the insulating end plate 10, refer to Figure 9 It can be seen that when the difference between D2 and 2D1 is less than 5, as the difference between D2 and 2D1 gradually increases, the safety distance increases sharply; when the difference between D2 and 2D1 is greater than 5, as the difference between D2 and 2D1 gradually increases, the safety distance also gradually increases but the growth is slow; when the difference between D2 and 2D1 is less than 11, as the difference between D2 and 2D1 gradually increases, the strength of the insulating end plate 10 gradually decreases, and the decrease is slow. When the difference between D2 and 2D1 is greater than 11, as the difference between D2 and 2D1 gradually increases, the strength of the insulating end plate 10 decreases sharply. Figure 9 It can be seen that limiting the difference between D2 - 2D1 to between 5 and 10 is beneficial to ensuring the strength of the insulating end plate 10 while increasing the safe distance between the terminal slot 112 and the stator core.

[0049] Reference Figure 4 Optionally, the cross-section of the lead portion 110 in the radial direction is square, and the length direction of the lead portion 110 extends in the tangential direction of the outer peripheral wall 100. This helps to ensure uniform thickness of each part of the lead portion 110 and prevent the lead portion 110 from being easily broken due to excessively thin walls. Of course, this solution is not limited to this. In other embodiments, the cross-section of the lead portion 110 in the radial direction can also be fan-shaped, and the length direction of the lead portion 110 extends in the circumferential direction of the outer peripheral wall 100.

[0050] Reference Figure 6 and Figure 7 . Furthermore, the end of the outer slot wall of the terminal slot 112 away from the stator core is marked as C, the end of the lead portion 110 close to the stator core is marked as D, the distance between C and D is h1, the end of the inner slot wall of the terminal slot 112 away from the stator core is marked as E, the slot bottom of the terminal slot 112 is marked as F, the distance between E and F is h2, and the range of the difference between h1 and h2 is: 3mm≤h1-h2≤10mm, which can improve the strength of the lead portion 110, thereby reducing the probability of damage to the lead portion 110.

[0051] Furthermore, the width of the wire clamping groove 111 is W, and the range of W is: 0.5mm≤W≤1.1mm. It can be understood that the width of the wire clamping groove 111 affects the winding efficiency and the limiting ability of the wire clamping groove 111 on the external lead-out wire. This solution facilitates winding by limiting the width of the wire clamping groove 111 to between 0.5mm and 1.1mm, thereby improving the winding efficiency and increasing the installation stability of the external lead-out wire.

[0052] Reference Figure 3 、 Figure 5 and Figure 10 Furthermore, the outer peripheral wall 100 is provided with a plurality of through-holes 120, the maximum width of the through-holes 120 in the axial direction of the outer peripheral wall 100 is M1, the minimum distance between two adjacent through-holes 120 is M2, and the ratio of M1 to M2 is: 0.2≤M1 / M2≤5. It can be understood that the through-holes 120 are used to bind external lead wires. When the height of the outer peripheral wall 100 remains unchanged, the larger the maximum width of the through-holes 120 in the axial direction of the outer peripheral wall 100, the smaller the distance between the through-holes 120 and the end edge of the outer peripheral wall 100, resulting in a lower strength of the outer peripheral wall 100, thereby weakening the strength of the insulating end plate 10. Figure 10 , Figure 10 Schematic diagram showing the relationship between the ratio of M1 to M2, the strength of the insulating end plate 10, and the wire binding rhythm of a single insulating end plate 10, see Figure 10 It can be seen that when the ratio of M1 to M2 is less than 0.5, as the ratio of M1 to M2 increases, the wire binding beat of the single insulating end plate 10 gradually decreases, and when the ratio of M1 to M2 is greater than 0.5, as the ratio of M1 to M2 increases, the wire binding beat of the single insulating end plate 10 also gradually decreases, but the reduction speed of the wire binding beat of the single insulating end plate 10 is slower than when the ratio of M1 to M2 is less than 0.5; when the ratio of M1 to M2 is less than 5, as the ratio of M1 to M2 increases, the wire binding beat of the single insulating end plate 10 decreases. The strength of the end plate 10 gradually weakens. When the ratio of M1 to M2 is greater than 5, as the ratio of M1 to M2 increases, the strength of the insulating end plate 10 also gradually weakens. However, the strength of the insulating end plate 10 decreases faster than when the ratio of M1 to M2 is less than 5. Therefore, this solution limits the ratio of M1 to M2 to between 0.2 and 5, which is conducive to balancing the relationship between the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10, so that the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10 are better.

[0053] Furthermore, the minimum distance between the end surface of the outer peripheral wall 100 away from the stator core and the through hole 120 is M3, and the ratio of M1 to M3 is: 0.5≤M1 / M3≤10. Figure 11 , Figure 11 Schematic diagram showing the relationship between the ratio of M1 to M3, the strength of the insulating end plate 10, and the wire binding rhythm of a single insulating end plate 10, see Figure 11It can be seen that when the ratio of M1 to M3 is less than 1, as the ratio of M1 to M3 increases, the wire binding beat of the single insulating end plate 10 gradually decreases, and when the ratio of M1 to M3 is greater than 1, and as the ratio of M1 to M3 increases, the wire binding beat of the single insulating end plate 10 also gradually decreases, but the reduction speed of the wire binding beat of the single insulating end plate 10 is slower than when the ratio of M1 to M3 is less than 1; when the ratio of M1 to M3 is less than 10, as the ratio of M1 to M3 increases, the wire binding beat of the single insulating end plate 10 decreases. The strength of the insulating end plate 10 gradually weakens. When the ratio of M1 to M3 is greater than 10, as the ratio of M1 to M3 increases, the strength of the insulating end plate 10 also gradually weakens. However, compared with the case where the ratio of M1 to M3 is less than 10, the strength of the insulating end plate 10 decreases significantly. Therefore, this solution limits the ratio of M1 to M3 to between 0.5 and 10, which is beneficial to balancing the relationship between the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10, so that the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10 are better.

[0054] Optionally, the minimum distance between the connecting line of the outer peripheral wall 100 and the tooth portion 200 and the through hole 120 is M4, and the ratio of M1 to M4 is: 0.1≤M1 / M4≤3; Figure 12 , Figure 12 Schematic diagram showing the relationship between the ratio of M1 to M4, the strength of the insulating end plate 10, and the wire binding rhythm of a single insulating end plate 10, see Figure 12 It can be seen that when the ratio of M1 to M4 is less than 1, as the ratio of M1 to M4 increases, the wire binding beat of the single insulating end plate 10 gradually decreases, and when the ratio of M1 to M4 is greater than 1, and as the ratio of M1 to M4 increases, the wire binding beat of the single insulating end plate 10 also gradually decreases, but the reduction speed of the wire binding beat of the single insulating end plate 10 is slower than when the ratio of M1 to M4 is less than 1; when the ratio of M1 to M4 is less than 10, as the ratio of M1 to M4 increases, the wire binding beat of the single insulating end plate 10 decreases. 0 gradually weakens. When the ratio of M1 to M4 is greater than 10, as the ratio of M1 to M4 increases, the strength of the insulating end plate 10 also gradually weakens. However, compared with the case where the ratio of M1 to M4 is less than 10, the strength of the insulating end plate 10 decreases faster. Therefore, this solution limits the ratio of M1 to M4 to between 0.1 and 3, which is beneficial to balancing the relationship between the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10, so that the strength of the insulating end plate 10 and the wire binding rhythm of a single insulating end plate 10 are better.

[0055] The present invention also provides a stator comprising a stator core and an insulating end plate 10. The specific structure of the insulating end plate 10 is similar to that of the aforementioned embodiments. Since the present stator utilizes all the technical solutions of all the aforementioned embodiments, it possesses at least all the beneficial effects of the technical solutions of the aforementioned embodiments, and therefore will not be further detailed here. The insulating end plate 10 is disposed at the end of the stator core.

[0056] The present invention also proposes a motor, which includes a stator. The specific structure of the stator refers to the above embodiments. Since the motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0057] The present invention also proposes a compressor, which includes a motor. The specific structure of the motor refers to the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0058] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An insulating end plate for a stator, wherein the stator comprises a stator core, characterized in that: The insulating end plate comprises: An outer peripheral wall, wherein the outer peripheral wall is provided with K1 lead portions, each of the lead portions is provided with K2 wire clamping grooves, and 0.5≤K2 / K1≤2; a plurality of teeth, the plurality of teeth being located on the inner periphery of the outer peripheral wall; and A plurality of inner circumferential walls are provided on the inner circumference of the outer circumferential wall, and each of the teeth is connected to the outer circumferential wall and one of the inner circumferential walls, and the plurality of inner circumferential walls are spaced apart and arranged to form a circle.

2. The insulating end plate according to claim 1, wherein: The number K1 of the lead portions is in the range of 2≤K1≤4.

3. The insulating end plate according to claim 1, wherein: The lead part is also provided with a terminal groove, through which K2 wire-holding grooves are connected. The intersection of the outer groove wall of the terminal groove and the center line of the wire-holding groove is A, the center of the outer peripheral wall is B, the distance between A and B is D1, and the diameter of the maximum outer contour circle of the stator core is D2, 5mm≤D2-2D1≤10mm.

4. The insulating end plate according to claim 3, wherein: The cross section of the lead portion in the radial direction is square, and the length direction of the lead portion extends toward the tangent direction of the outer peripheral wall.

5. The insulating end plate according to claim 3, wherein: The end of the outer slot wall of the terminal slot away from the stator core is marked as C, the end of the lead part close to the stator core is marked as D, and the distance between C and D is h1. The end of the inner slot wall of the terminal slot away from the stator core is marked as E, the slot bottom of the terminal slot is marked as F, and the distance between E and F is h2, 3mm≤h1-h2≤10mm.

6. The insulating end plate according to claim 1, wherein: The width of the wire clamping groove is W, 0.5mm≤W≤1.1mm.

7. The insulating end plate according to claim 1, wherein: The outer peripheral wall is provided with a plurality of through holes, the maximum width of the through holes in the axial direction of the outer peripheral wall is M1, the minimum distance between two adjacent through holes is M2, and 0.2≤M1 / M2≤5.

8. The insulating end plate according to claim 7, wherein: The minimum distance between the end surface of the outer peripheral wall away from the stator core and the through hole is M3, and 0.5≤M1 / M3≤10.

9. The insulating end plate according to claim 7, wherein: The minimum distance between the connecting line between the outer peripheral wall and the tooth portion and the through hole is M4, and 0.1≤M1 / M4≤3.

10. A stator, characterized in that: The invention comprises a stator core and an insulating end plate according to any one of claims 1 to 9, wherein the insulating end plate is provided at an end of the stator core.

11. A motor, characterized in that: Comprising the stator according to claim 10.

12. A compressor, characterized in that: Comprising the motor as claimed in claim 11.

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