Rotor punching sheet, rotor and motor

Abstract

The invention provides a rotor punching sheet, a rotor and a motor, and belongs to the technical field of motors. The rotor punching sheet comprises a sheet body, the sheet body is provided with a magnet groove, the magnet groove comprises a plurality of groove bodies which are communicated with one another, and the plurality of groove bodies which are communicated with one another are arranged in a step shape. And a magnetic isolation hole is formed in one side of the magnet groove. The rotor punching sheet is applied to the motor, and the step-shaped magnet grooves can be used for effectively fixing the magnets, so that collision between the magnets and the magnet grooves is reduced, noise is reduced, and the efficiency of the motor is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, and in particular to a rotor lamination, a rotor and an electric machine. BACKGROUND

[0002] In the current air conditioner compressor industry, cost control is one of the key factors determining the market competitiveness of enterprises. As the core component of air conditioner compressors, the reduction of the cost of electric machines is crucial to improving the overall competitiveness of products. However, in the process of pursuing the cost reduction of electric machines, a thorny problem often arises, that is, the efficiency of the electric machine may be reduced. Therefore, how to realize the cost reduction of the electric machine while maintaining the efficiency and vibration noise of the electric machine has become a technical problem to be solved in the industry. In traditional electric machine design, the cooperation between the magnet and the magnet slot is often relatively simple, which to some extent leads to low utilization rate of the magnet, and also easily causes resonance phenomenon between the magnet and the magnet slot, thereby generating large electromagnetic noise. In addition, the excessive use of magnets also increases the cost of the electric machine, and the existence of rotor iron loss further reduces the efficiency of the electric machine. The existence of these problems seriously restricts the improvement of the performance and the reduction of the cost of the electric machine. In the existing research on the improvement of the performance of the electric machine, the effect on reducing the vibration noise is limited, and it is difficult to effectively reduce the cost.

[0003] Therefore, it is necessary to improve the existing structure of the electric machine to overcome the defects of the prior art. SUMMARY

[0004] To overcome the problems in the related art, one of the purposes of the present application is to provide a rotor lamination applied in an electric machine, which can effectively fix the magnet by using the stepped magnet slot, thereby reducing the collision between the magnet and the magnet slot, reducing noise, and improving the efficiency of the electric machine.

[0005] A rotor lamination, comprising a lamination body, wherein a magnet slot is arranged on the lamination body, and the magnet slot comprises a plurality of interconnected slot bodies arranged in a stepped manner.

[0006] A magnetic isolation hole is arranged on one side of the magnet slot.

[0007] The punch piece can be stacked to form a rotor of a motor. After forming the rotor of the motor, the magnet can be more closely embedded in the magnet slot by designing the stepped magnet slot, thereby reducing the gap between the magnet and the magnet slot and reducing the possibility of collision. The stepped magnet slot design can better fix the magnet and reduce the magnetic leakage phenomenon between the magnet and the magnet slot. At the same time, the design of the magnetic isolation hole further optimizes the magnetic field distribution, makes the magnetic field more concentrated, and reduces the loss of the magnetic field. By optimizing the structure design of the magnet slot, the amount of magnet can be reduced, thereby reducing the manufacturing cost of the motor. At the same time, the stepped magnet slot design can improve the utilization rate of the magnet, thereby further reducing the cost.

[0008] In the preferred technical solution of the present application, one side of any one of the groove bodies is provided with a through hole arranged in a zigzag shape.

[0009] Specifically, the zigzag hole has a shape similar to a sawtooth, with a plurality of sharp tooth structures. The tip of each tooth structure can effectively disperse the magnetic field and reduce the concentration of the magnetic field.

[0010] In a specific embodiment, the zigzag hole can be arranged at both ends of the recess of the magnet slot, between the magnets. This position design can maximize the reduction of direct contact between the magnets, thereby reducing magnetic leakage.

[0011] In a specific embodiment, the zigzag hole includes a plurality of tooth holes connected to each other.

[0012] In the preferred technical solution of the present application, one side of each of the groove bodies is provided with a through hole arranged in a zigzag shape.

[0013] The design of the zigzag hole disperses the magnetic field by increasing the path length and complexity of the magnetic field. This dispersion can reduce the direct transmission of the magnetic field between the magnets, thereby reducing magnetic leakage. The sharp tooth structure of the zigzag hole increases the magnetic resistance of the magnetic field passing through.

[0014] In the preferred technical solution of the present application, the groove body includes a middle groove and a plurality of side grooves, the plurality of side grooves are symmetrically arranged on the opposite sides of the middle groove, and the plurality of side grooves and the middle groove are arranged in a stepped manner;

[0015] The edges of the two oppositely arranged side grooves are respectively provided with through holes arranged in a zigzag shape.

[0016] And the through holes on the two oppositely arranged side grooves are symmetric about the center of the middle groove.

[0017] In this embodiment, the number of side grooves can be set to 2-4, and each side groove is arranged in a stepped manner. The design of the number of side grooves can increase the restriction on the magnet. However, the number of side grooves cannot be set too high, because this will lead to an overcomplicated structure of the magnet, which is not conducive to production and installation.

[0018] In the preferred technical solution of the present application, a plurality of magnet grooves are arranged on the sheet body and evenly distributed along the circumference of the sheet body. At least one magnetic shielding hole is arranged on one side of each magnet groove.

[0019] In actual application, the plurality of magnet grooves are evenly distributed along the circumference of the sheet body, so that the magnet can be uniformly embedded in the groove, thereby forming a uniform magnetic field distribution around the rotor. This uniform magnetic field distribution helps to improve the output power and torque of the motor, so that the motor can output power more smoothly during operation, reduce torque fluctuations caused by uneven magnetic field, and thus improve the overall performance of the motor. Moreover, the design of the plurality of magnet grooves can optimize the path of the magnetic field, so that the magnetic field is more evenly distributed in the air gap between the rotor and the stator. This optimized magnetic field path can reduce the loss of the magnetic field and improve the transmission efficiency of the magnetic field. For example, in some motor designs, by adjusting the position and shape of the magnet groove, the length and complexity of the magnetic field path can be optimized, thereby improving the efficiency of the motor.

[0020] In the preferred technical solution of the present application, the magnetic shielding hole comprises two interconnected magnetic shielding holes, one end of the two magnetic shielding holes is connected, and the opposite end extends away from the end of the magnet groove.

[0021] The magnetic shielding hole is arranged in an arc shape.

[0022] The two magnetic shielding holes are interconnected to form a herringbone-shaped magnetic shielding hole.

[0023] The herringbone-shaped magnetic shielding hole can effectively guide and disperse the magnetic field due to its special shape. The arc-shaped design increases the length and complexity of the magnetic field path, so that the magnetic field is uniformly dispersed when passing through the magnetic shielding hole, thereby optimizing the distribution of the magnetic field on the rotor sheet. This uniform magnetic field distribution reduces the concentration and fluctuation of the magnetic field, which helps to improve the operating efficiency and stability of the motor.

[0024] The optimized magnetic field distribution can reduce the loss of the magnetic field and improve the utilization rate of the magnetic field, thereby improving the efficiency of the motor. Experimental data shows that the motor designed with the herringbone-shaped magnetic shielding hole has improved operating efficiency.

[0025] In the preferred technical solution of the present application, a plurality of magnetic wire arrangement groove groups are arranged on the edge of the sheet body, each magnetic wire arrangement groove group comprises a plurality of magnetic wire arrangement grooves, and the plurality of magnetic wire arrangement groove groups are evenly distributed along the circumference of the sheet body.

[0026] Specifically, the magnetic wire arranging groove can be composed of multiple groove bodies, which are uniformly distributed along the circumference of the rotor lamination. Each magnetic wire arranging groove group includes several magnetic wire arranging grooves, which are uniformly distributed along the circumference of the rotor lamination, ensuring that the magnetic field lines are uniformly distributed around the rotor, reducing the unevenness of the magnetic field. The magnetic wire arranging groove is recessed inward from the edge of the sheet body.

[0027] In actual application, the magnetic wire arranging groove can be rectangular with a certain width and depth. The design of the rectangular groove can effectively guide the magnetic field lines and reduce the disorder of the magnetic field.

[0028] The magnetic wire arranging groove can be arc-shaped to better adapt to the circular structure of the rotor. The arc-shaped groove can further optimize the magnetic field distribution and reduce the loss of the magnetic field.

[0029] The width of each magnetic wire arranging groove can be between 1-3mm, and the specific width can be adjusted according to the power and size of the motor. Narrower grooves can reduce eddy current loss, but too narrow grooves may affect the guiding effect of the magnetic field lines.

[0030] The depth of the magnetic wire arranging groove is usually between 1-2mm, and the design of the depth needs to consider the path of the magnetic field lines and the eddy current loss. Deeper grooves can better guide the magnetic field lines, but too deep grooves may increase the manufacturing difficulty. The depth of the magnetic wire arranging groove refers to the recess depth of the magnetic wire arranging groove from the edge of the sheet body to the center.

[0031] In the preferred technical solution of the present application, the magnet slot includes a middle slot, a first side slot and a second side slot, the middle slot is provided with a first side slot and a second side slot on the opposite sides, and the first side slot and the second side slot are arranged in a stepped manner on the two sides of the middle slot, and the second side slot is arranged on the side of the first side slot away from the middle slot.

[0032] Along the radial direction of the rotor, the thickness of the middle slot is H1, the thickness of the first side slot is H2, and the thickness of the second side slot is H3, where H3=H1-H2, 0.45*H2<H3<0.55*H2.

[0033] The second purpose of the present application is to provide a rotor comprising a rotor lamination as described above, the rotor being formed by stacking the sheet bodies.

[0034] The rotor can improve the installation stability of the magnet through the special design of the punching sheet, specifically the structure of the magnet slot. The design of the magnetic isolation hole can effectively change the path of the magnetic field, increase the path length and complexity of the magnetic field, and the two arc-shaped magnetic isolation hole bodies arranged in the adult character shape can better disperse the magnetic field, reduce the direct transmission of the magnetic field between the magnets, reduce the magnetic leakage phenomenon, and improve the efficiency of the motor using the rotor.

[0035] A third object of the present application is to provide an electric machine comprising a stator and a rotor as described above, the rotor being arranged in the stator;

[0036] Along the circumference of the stator, a plurality of stator teeth are uniformly distributed on the stator, and a slot is arranged between adjacent two stator teeth;

[0037] The sheet body is provided with a group of magnetic wire arranging grooves, each group of magnetic wire arranging grooves comprising a plurality of magnetic wire arranging grooves; and the center of at least one magnetic wire arranging groove in each group of magnetic wire arranging grooves falls on the center line of the corresponding slot.

[0038] The present application has the following beneficial effects:

[0039] The present application provides a rotor punching sheet, which comprises a sheet body, and a magnet slot is arranged on the sheet body. The magnet slot comprises a plurality of interconnected groove bodies, and the plurality of interconnected groove bodies are arranged in a stepped manner. A magnetic isolation hole is arranged on one side of the magnet slot. The rotor punching sheet is applied in an electric machine and can be formed into a rotor by stacking a plurality of punching sheets. A corresponding magnet is embedded in the magnet slot of each rotor punching sheet. The size of the magnet matches the size of the magnet slot, ensuring that the magnet can be tightly embedded in the magnet slot. During the operation of the electric machine, the magnet and the magnet slot may collide, producing noise. The present application designs a stepped magnet slot, which enables the magnet to be more tightly embedded in the magnet slot, thereby reducing the gap between the magnet and the magnet slot and reducing the possibility of collision. The stepped magnet slot design can better fix the magnet and reduce the magnetic leakage phenomenon between the magnet and the magnet slot. At the same time, the design of the magnetic isolation hole further optimizes the magnetic field distribution, making the magnetic field more concentrated and reducing the loss of the magnetic field. By optimizing the structural design of the magnet slot, the amount of magnet used can be reduced, thereby reducing the manufacturing cost of the electric machine. At the same time, the stepped magnet slot design can improve the utilization rate of the magnet, further reducing the cost.

[0040] The present application also provides a rotor comprising the above-mentioned rotor punching sheet and an electric machine. The electric machine can effectively fix the magnet using the stepped magnet slot, so that the magnet is not easy to loosen during operation, thereby reducing the noise during operation of the electric machine. The design of the magnetic isolation hole also helps to reduce the fluctuation of the magnetic field, further improving the operation stability of the electric machine. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic view of a rotor lamination provided by the present application;

[0042] Figure 2 is a schematic view of a magnet slot provided by the present application;

[0043] Figure 3 is a schematic view of a motor provided by the present application;

[0044] Figure 4 is a schematic view of the thickness design of a slot body of a magnet slot in an embodiment of the present application;

[0045] Figure 5 is a schematic view of a magnetic induction line of a motor of the present application.

[0046] Reference signs:

[0047] 1, lamination; 2, magnet slot; 21, mounting cavity; 3, through hole; 4, magnetic isolation hole; 5, magnetic line arrangement slot; 10, stator; 101, stator tooth; 102, slot opening. DETAILED DESCRIPTION

[0048] Preferred embodiments of the present application will be described in greater detail below, with reference to the accompanying drawings. Although preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0049] In the existing production process, in the process of pursuing motor cost reduction, a thorny problem often arises, that is, the motor efficiency may be reduced. Therefore, how to realize motor cost reduction while maintaining motor efficiency and vibration noise has become a technical problem to be solved in the industry. In the traditional motor design, the cooperation between the magnet and the magnet slot is often relatively simple, which to some extent leads to low utilization rate of the magnet, and also easily causes resonance phenomenon between the magnet and the magnet slot, thereby generating large electromagnetic noise. In addition, excessive use of magnets also increases the cost of the motor, and the existence of rotor iron loss further reduces the efficiency of the motor. The existence of these problems seriously restricts the improvement of motor performance and the reduction of cost. In the existing research on the improvement of motor performance, the effect on reducing vibration noise is limited, and it is difficult to effectively reduce the cost.

[0050] Based on this, the present application provides a rotor lamination.

[0051] Embodiment 1

[0052] As Figures 1-4As shown, the rotor lamination provided by the embodiment includes a lamination body 11, and the lamination body 11 is provided with a plurality of magnet grooves 22, and the plurality of magnet grooves 22 are arranged on the lamination body 11 in a circumferential direction of the lamination body 11.

[0053] The magnet groove 22 is provided with a magnetic isolation hole 44 on one side.

[0054] Specifically, in a specific embodiment, the main body part of the rotor lamination is made of high-strength silicon steel sheet material, which has good magnetic conductivity and mechanical strength. The outer diameter of the lamination body 11 is D1, the inner diameter is D2, and the thickness is T1.

[0055] The lamination body 11 is provided with a plurality of magnet grooves 22, and the plurality of magnet grooves 22 are arranged on the lamination body 11 in a circumferential direction of the lamination body 11; each of the magnet grooves 22 is provided with at least one magnetic isolation hole 44. Further, a plurality of magnet grooves 22 are uniformly distributed between the inner circle and the outer circle of the lamination body 11, and each magnet groove 22 is composed of a plurality of interconnected groove bodies, and the groove bodies are arranged in a stepped manner.

[0056] In this embodiment, the magnetic isolation hole 44 can be circular, rectangular or other shapes, with a diameter of d1. The magnetic isolation hole 44 is used to reduce the magnetic leakage phenomenon between the magnet and the magnet groove 22.

[0057] The rotor lamination is applied in a motor and can be formed into a rotor by stacking multiple laminations. Each rotor lamination is embedded with a corresponding magnet in the magnet groove 22. The size of the magnet matches the size of the magnet groove 22, ensuring that the magnet can be tightly embedded in the magnet groove 22. During the operation of the motor, the magnet and the magnet groove 22 may collide, producing noise. The present application designs a stepped magnet groove 22, which allows the magnet to be more tightly embedded in the magnet groove 22, thereby reducing the gap between the magnet and the magnet groove 22 and reducing the possibility of collision. The stepped magnet groove 22 design can better fix the magnet and reduce the magnetic leakage phenomenon between the magnet and the magnet groove 22. At the same time, the design of the magnetic isolation hole 44 further optimizes the magnetic field distribution, making the magnetic field more concentrated and reducing the loss of the magnetic field. By optimizing the structural design of the magnet groove 22, the amount of magnet used can be reduced, thereby reducing the manufacturing cost of the motor. At the same time, the stepped magnet groove 22 design can improve the utilization rate of the magnet, further reducing the cost.

[0058] Embodiment 2

[0059] This embodiment is an improvement based on embodiment 1.

[0060] As Figures 1-4As shown in the embodiment, a through hole 33 is arranged on one side of each slot body, and the through hole 33 is arranged in a zigzag shape.

[0061] In this embodiment, the distribution of the magnetic field is optimized by arranging a zigzag-shaped through hole 33 on one side of each slot body. The specific principle is as follows:

[0062] Specifically, the shape of the zigzag hole is similar to a zigzag, and has a plurality of sharp tooth structures. The tip of each tooth structure can effectively disperse the magnetic field and reduce the concentration of the magnetic field.

[0063] In a specific implementation, the zigzag hole can be arranged at both ends of the recess of the magnet slot 22, between the magnets. This position design can maximize the reduction of direct contact between the magnets, thereby reducing the magnetic leakage.

[0064] The working principle of the zigzag hole is that the design of the zigzag hole increases the path length and complexity of the magnetic field, so that the magnetic field is dispersed when passing through the zigzag hole. This dispersion can reduce the direct transmission of the magnetic field between the magnets, thereby reducing the magnetic leakage. The sharp tooth structure of the zigzag hole increases the magnetic resistance of the magnetic field passing through. The increase in magnetic resistance makes it more difficult for the magnetic field to pass through the zigzag hole, thereby reducing the leakage of the magnetic field.

[0065] Embodiment 3

[0066] This embodiment is an improvement based on embodiment 1.

[0067] As shown in the embodiment, a through hole 33 is arranged on one side of each slot body, and the through hole 33 is arranged in a zigzag shape. Figures 1-4

[0068] This embodiment provides a different arrangement of the through hole 33 from embodiment 2. In this embodiment, a through hole 33 is arranged on one side of each slot body.

[0069] A zigzag-shaped through hole 33 is arranged on one side of each slot body. Through the special shape and structure of the through hole 33, the path of the magnetic field can be effectively changed, and the path length and complexity of the magnetic field passing through are increased. This design causes the magnetic field to be dispersed and guided when passing through the hole 33, thereby reducing the direct transmission of the magnetic field between the magnets and reducing the magnetic leakage phenomenon.

[0070] Embodiment 4

[0071] This embodiment is an improvement based on embodiment 1.

[0072] As shown in the embodiment, a through hole 33 is arranged on one side of each slot body, and the through hole 33 is arranged in a zigzag shape. Figures 1-4 ​As shown, in this embodiment, the trough includes a central trough and several side troughs. The several side troughs are symmetrically arranged on opposite sides of the central trough, and the several troughs are arranged in a stepped manner with respect to the central trough.

[0073] Two side grooves that are positioned opposite each other are provided with through holes 33, which are arranged in a sawtooth shape.

[0074] Furthermore, the through holes 33 on the two oppositely arranged side grooves are symmetrical about the center of the intermediate groove.

[0075] In this embodiment, by providing serrated through holes 33 on the edge of the side slot, and ensuring these through holes 33 are symmetrical about the center of the central slot, the path of the magnetic field can be effectively altered, increasing the path length and complexity of the magnetic field. This design allows the magnetic field to be dispersed and guided as it passes through the holes 33, thereby reducing the direct transmission of the magnetic field between magnets and minimizing magnetic leakage. Similarly, the serrated through holes 33 optimize the distribution of the magnetic field, making it more uniformly distributed around the magnets. This uniform magnetic field distribution reduces magnetic field fluctuations, thereby improving the operating efficiency and stability of the motor.

[0076] Example 5

[0077] This embodiment is an improvement on embodiment 1.

[0078] like Figures 1-4 As shown, in this embodiment, the magnetic isolation hole 44 includes two interconnected holes, with one end of the two holes connected and the other end extending away from the magnetic groove 22.

[0079] The diaphragm is arranged in an arc shape.

[0080] Specifically, the two partition holes are arranged in a herringbone pattern. In this embodiment, the partition holes are arc-shaped, and the two partition holes are arranged in a herringbone pattern. In one specific implementation, the magnetic isolation hole 44 includes two partition holes, which are connected to each other to form a herringbone structure. The arc radius of partition hole 1 is R1, and the length is L1. The arc radius of partition hole 2 is R2, and the length is L2. The included angle between the two partition holes at the connection point is θ, which is usually designed to be 120°-150°.

[0081] The design of the magnetic isolation hole 44 can effectively change the path of the magnetic field, increase the path length and complexity of the magnetic field passing through, by virtue of its special shape and structure. The two arc-shaped isolation holes arranged in a "human" shape can better disperse the magnetic field, reduce the direct transmission of the magnetic field between the magnets, and reduce the magnetic leakage phenomenon. The two arc-shaped isolation holes arranged in a "human" shape can optimize the distribution of the magnetic field, so that the magnetic field is more uniformly distributed around the magnet. Such uniform magnetic field distribution can reduce the fluctuation of the magnetic field, thereby improving the operating efficiency and stability of the motor.

[0082] Embodiment 6

[0083] This embodiment is an improvement based on Embodiment 1.

[0084] As shown in Figures 1-4 In this embodiment, a plurality of magnetic wire arrangement groove groups are arranged on the edge of the sheet 11, each of which includes a plurality of magnetic wire arrangement grooves 5, and the plurality of magnetic wire arrangement groove groups are uniformly distributed on the sheet 11 along the circumferential direction of the sheet 11.

[0085] In a specific embodiment, each of the magnetic wire arrangement groups includes a first magnetic wire arrangement groove 5 and a second magnetic wire arrangement groove 5.

[0086] The design of the magnetic wire arrangement groove group can effectively arrange the magnetic wires and reduce the disorder of the magnetic wires. By arranging the first magnetic wire arrangement groove 5 and the second magnetic wire arrangement groove 5, the orderly arrangement of the magnetic wires can be ensured, and the friction and wear between the magnetic wires can be reduced.

[0087] By optimizing the arrangement of the magnetic wires, the loss of the magnetic wires can be reduced, and the operating efficiency and stability of the motor can be improved. At the same time, the orderly arrangement of the magnetic wires can reduce the noise level of the motor and provide a more quiet operating environment.

[0088] Embodiment 7

[0089] This embodiment is an improvement based on Embodiment 1.

[0090] In this embodiment, a specific embodiment of the magnet slot 2 is provided.

[0091] The magnet slot 2 includes a middle slot, a first side slot, and a second side slot, the middle slot is provided with a first side slot and a second side slot on the opposite sides respectively, and the first side slot and the second side slot are arranged in a stepped manner on the two sides of the middle slot, and the first side slot is arranged between the middle slot and the second side slot.

[0092] In the radial direction of the rotor, the thickness of the middle slot is H1, the thickness of the first side slot is H2, and the thickness of the second side slot is H3, wherein H3 = H1 - H2, 0.45 * H2 < H3 < 0.55 * H2.

[0093] In this embodiment, by the constraint of the thickness of the intermediate slot, the first side slot and the second side slot, it is converted into the constraint of the thickness of the magnet. The constraint of the thickness of the magnet can ensure that the magnetic flux has no substantial influence on the motor performance within the normal fluctuation range. Specifically, the thickness of the intermediate slot is H1, the thickness of the first side slot is H2, and the thickness of the second side slot is H3, wherein H3 = H1 - H2, and 0.45H2 < H3 < 0.55H2. This design can ensure that the thickness of the magnet is within a reasonable range, thereby ensuring the stability of the magnetic flux.

[0094] Specifically, the thickness ratio of H3 to H2 has the following influence on the motor as shown in the table:

[0095] H3 / H2 0.45 0.5 0.55 Reverse potential (V) 54.3 55.4 57 Efficiency (%) 94.3 94.36 94.41

[0096] Embodiment 8

[0097] As shown in Figures 1-4 , the present embodiment provides a rotor comprising a rotor lamination as described above, said rotor being stacked from said sheet body 1.

[0098] The rotor can improve the installation stability of the magnet through the special design of the lamination, specifically the structural shape of the magnet slot 2. The design of the magnetic isolation hole 4 can effectively change the path of the magnetic field through its special shape and structure, increase the path length and complexity of the magnetic field passing through. The two arc-shaped magnetic isolation hole bodies arranged in a herringbone shape can better disperse the magnetic field, reduce the direct transmission of the magnetic field between the magnets, reduce the magnetic leakage phenomenon and thus improve the efficiency of the motor using the rotor.

[0099] The manufacturing process of the rotor is as follows: First, according to the design drawing of the rotor lamination, a high-precision lamination die is manufactured. The die should include the shape and size of the magnet slot 2, the magnetic isolation hole 4 and the magnetic wire arranging groove 5, to ensure the precision and consistency of the lamination. The silicon steel sheet is placed in the lamination die, and the stamping process is carried out by the stamping equipment. The stamping pressure and speed should be strictly controlled during the stamping process to ensure the quality and precision of the lamination. The stamped lamination should be inspected to ensure that there is no burr and no deformation. The surface of the stamped lamination may have oil stains and impurities, which need to be cleaned. The lamination is placed in the cleaning equipment and cleaned with special cleaning agent to ensure that the surface of the lamination is clean and free of oil stains.

[0100] Before embedding the magnet into the magnet slot 2, the magnet needs to be pretreated. The surface of the magnet is cleaned to remove oil and impurities. Then an insulating paint is applied to the surface of the magnet to ensure insulation between the magnet and the magnet slot 2. The treated magnet is embedded in the magnet slot 2 to ensure that the magnet is tightly fitted with the magnet slot 2. Special embedding tools should be used during embedding to ensure the depth and position of the embedded magnet are accurate. The embedded magnet should be checked to ensure that it is not loose or displaced.

[0101] The processed rotor punching sheet is arranged to ensure that the size and shape of the punching sheet are consistent. The punching sheet is stacked in a certain order to ensure that the magnet slot 2, the magnetic gap 4 and the magnetic wire arrangement slot 5 are aligned.

[0102] The stacked punching sheet is placed in a laminating device and laminated by hydraulic or mechanical pressure. The laminating pressure and time should be strictly controlled during lamination to ensure that the laminated rotor is tight and has no gap. The laminated rotor should be checked to ensure that it is not deformed or loose.

[0103] The laminated rotor needs to be cured to ensure the structural stability of the rotor. The rotor is placed in a curing oven and cured at a certain temperature and time. The cured rotor should be checked to ensure that it is not deformed or cracked.

[0104] Example 9

[0105] As shown in Figures 1-5 , the present embodiment provides an electric machine comprising a stator 10 and a rotor as described above, the rotor being arranged in the stator 10;

[0106] Along the circumference of the stator 10, the stator 10 is uniformly distributed with a plurality of stator teeth 101, and a slot 102 is arranged between adjacent two stator teeth 101;

[0107] The sheet body 1 is provided with a group of magnetic wire arrangement slots 5, each group of magnetic wire arrangement slots 5 comprising a plurality of magnetic wire arrangement slots 5; wherein the center of at least one magnetic wire arrangement slot 5 in each group of magnetic wire arrangement slots 5 falls on the center line of the corresponding slot 102.

[0108] The manufacturing process of the electric machine is as follows:

[0109] After the rotor is manufactured, the surface of the rotor is treated for insulation to ensure the surface insulation performance of the rotor. Insulating paint or insulating tape can be used for surface treatment to ensure that the surface insulation layer is uniform and complete.

[0110] The manufactured rotor is installed into the stator of the motor, ensuring the uniformity of the air gap between the rotor and the stator. Special assembly tools should be used during the assembly process to ensure the accuracy and consistency of the assembly. The assembled motor is debugged to ensure that its performance meets the design requirements. The debugging content includes the starting performance, running stability, efficiency, noise, etc. of the motor. During the debugging process, various parameters should be recorded to ensure that the performance of the motor reaches the best state.

[0111] The motor can further reduce the use of magnets by optimizing the structural design of the magnet slot 2 and the magnetic isolation hole 4, thereby reducing the manufacturing cost of the motor. At the same time, the design of the magnetic isolation hole 4 can improve the utilization rate of the magnet, further reducing the cost. The design of the magnetic wire arrangement slot 5 group can effectively arrange the magnetic wire and reduce the disorder of the magnetic wire. By setting the first magnetic wire arrangement slot 5 and the second magnetic wire arrangement slot 5, the alignment of the magnetic wire can be ensured, and the friction and wear between the magnetic wires can be reduced.

[0112] By optimizing the arrangement of the magnetic wire, the loss of the magnetic wire can be reduced, and the running efficiency and stability of the motor can be improved. At the same time, the neatly arranged magnetic wire can reduce the noise level of the motor, providing a more quiet running environment.

[0113] The relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The technology, methods, and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods, and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of the parts themselves.

[0114] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device or feature being described with respect to the drawings in which the device or feature is illustrated. It is to be understood that the spatial or directional terms are intended to encompass different orientations of the device or feature in use or operation, in addition to the orientation depicted in the figures. For example, if the device or feature is inverted or rotated by 90°, a downward event or feature that would ordinarily be described as "above" or "up" would still be described as such. It is also to be understood that the spatial or directional terms are intended to encompass different orientations of the device or feature in use or operation, in addition to the orientation depicted in the figures. For example, if the device or feature is inverted or rotated by 90°, a downward event or feature that would ordinarily be described as "above" or "up" would still be described as such. It is also to be understood that the device or feature can be oriented in other ways (rotated at other angles), and the spatial or directional terms are to be interpreted accordingly.

[0115] In addition, it should be pointed out that the use of "first", "second", and / or the like terminology merely identifies an element as being a distinct element from another element, unless otherwise specified. Such terminology is used for the purpose of clarity and convenience in identifying different elements, and is in no way intended to limit the scope of the present application, unless otherwise specified. The above-described embodiments are intended to be illustrative only and in no way limit the scope of the present application. Changes are contemplated, as are modifications that come within the scope of the present application. Such changes or modifications are intended to fall within the scope of the claims.

Claims

1. A rotor lamination, comprising a lamination body (1), characterized in that: a magnet slot (2) is arranged on the lamination body (1), the magnet slot (2) comprises a plurality of slot bodies which are in communication with each other, and the plurality of slot bodies are arranged in a stepped manner; and a magnetic isolation hole (4) is arranged on one side of the magnet slot (2).

2. The rotor lamination according to claim 1, characterized in that: a through hole (3) is arranged on one side of any one of the slot bodies, and the through hole (3) is arranged in a zigzag manner.

3. The rotor lamination according to claim 1, characterized in that: a through hole (3) is arranged on one side of each of the slot bodies, and the through hole (3) is arranged in a zigzag manner.

4. The rotor lamination according to any one of claims 1-3, characterized in that: the slot bodies comprise a middle slot and a plurality of side slots, the plurality of side slots are symmetrically arranged on opposite sides of the middle slot, and the plurality of side slots and the middle slot are arranged in a stepped manner; a through hole (3) is arranged on the edge of each of the two oppositely arranged side slots, and the through hole (3) is arranged in a zigzag manner; and the through holes (3) on the two oppositely arranged side slots are symmetrically arranged about the center of the middle slot.

5. The rotor lamination according to any one of claims 1-3, characterized in that: a plurality of magnet slots (2) are arranged on the lamination body (1), the plurality of magnet slots (2) are uniformly distributed on the lamination body (1) along the circumferential direction of the lamination body (1), and at least one magnetic isolation hole (4) is arranged on one side of each of the magnet slots (2).

6. The rotor lamination according to any one of claims 1-3, characterized in that: the magnetic isolation hole (4) comprises two magnetic isolation holes which are connected to each other, one end of the two magnetic isolation holes is connected, and the opposite end extends away from the end of the magnet slot (2); and the magnetic isolation hole is arranged in an arc shape.

7. The rotor lamination according to any one of claims 1-3, characterized in that: a plurality of magnetic wire arrangement groove groups are arranged on the edge of the lamination body (1), each of the magnetic wire arrangement groove groups comprises a plurality of magnetic wire arrangement grooves (5), and the plurality of magnetic wire arrangement groove groups are uniformly distributed on the lamination body (1) along the circumferential direction of the lamination body (1).

8. The rotor lamination according to claim 4, characterized in that: the magnet slot (2) comprises a middle slot, a first side slot, and a second side slot, the middle slot is respectively provided with one of the first side slot and one of the second side slot on opposite sides, the first side slot and the second side slot are arranged in a stepped manner on the two sides of the middle slot, and the second side slot is arranged on the side of the first side slot away from the middle slot; along the radial direction of the rotor, the thickness of the middle slot is H1, the thickness of the first side slot is H2, and the thickness of the second side slot is H3, wherein H3 = H1 - H2, 0.45*H2 < H3 < 0.55*H2. A rotor comprising the rotor lamination according to any one of claims 1-8, the rotor is formed by laminating the lamination body (1). A stator (10) and a rotor according to claim 9, the rotor is arranged in the stator (10). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 9. A rotor characterized by: ​ 10. An electric machine characterized by: ​ A plurality of stator teeth (101) are uniformly distributed along the circumference of the stator (10), and a slot (102) is arranged between two adjacent stator teeth (101); The sheet body (1) is provided with a plurality of groups of magnetic wire arranging grooves, each group of magnetic wire arranging grooves comprising a plurality of magnetic wire arranging grooves (5); wherein the center of at least one magnetic wire arranging groove (5) in each group of magnetic wire arranging grooves falls on the center line of the corresponding slot (102).

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