Dual-rotor motor and carrier

Abstract

The utility model relates to the field of motors, and discloses a dual-rotor motor and a carrier. The dual-rotor motor comprises a stator assembly; the first rotor comprises a first magnetic conductive part and a first magnet group, the first magnetic conductive part is rotatably arranged on the outer side of the stator assembly in a sleeving manner, and the first magnet group is arranged between the first magnetic conductive part and the stator assembly; the second rotor comprises a second magnetic conductive piece and a second magnet group, the second magnetic conductive piece is rotatably sleeved on the inner side of the stator assembly, and the second magnet group is arranged between the second magnetic conductive piece and the stator assembly; wherein at least one of the first magnetic conductive part and the second magnetic conductive part is formed by enclosing a plurality of splicing blocks which are arranged along the circumferential direction of the stator assembly and are connected. The size of each splicing block is relatively small, and the splicing blocks can be arranged on a raw material plate more tightly during cutting, so that waste materials on the edge of the plate can be reduced. In addition, the process requirement of directly cutting the central circular area of the material can be avoided, so that the material waste is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to double rotor motor and carrier. BACKGROUND

[0002] In the motor technical field, double rotor motor exhibits broad application prospect in many industrial applications and emerging technical fields by virtue of its unique structure and excellent performance.

[0003] The traditional double rotor motor mainly includes stator, inner rotor arranged in the inner side of the stator and outer rotor arranged in the outer side of the stator. At present, the inner rotor and the outer rotor usually adopt circular core, and in the processing process, the cutting size is close to the circumscribed square of the core. The cutting size of this cutting mode is too large, resulting in that a large amount of material is discarded by cutting, which causes serious material waste. SUMMARY

[0004] Therefore, the utility model provides a double rotor motor and carrier to solve or improve the problem of excessive cutting size of motor rotor in the related art.

[0005] In a first aspect, the utility model provides a double rotor motor, which comprises:

[0006] The stator assembly comprises a plurality of stator blocks, and the plurality of stator blocks are sequentially spliced into a ring structure.

[0007] The first rotor comprises a first magnetic guide and a first magnet group, the first magnetic guide is rotatably sleeved on the outer side of the stator assembly, and the first magnet group is arranged between the first magnetic guide and the stator assembly.

[0008] The second rotor comprises a second magnetic guide and a second magnet group, the second magnetic guide is rotatably sleeved on the inner side of the stator assembly, and the second magnet group is arranged between the second magnetic guide and the stator assembly.

[0009] At least one of the first magnetic guide and the second magnetic guide is spliced by a plurality of splicing blocks arranged along the circumference of the stator assembly and sequentially connected.

[0010] In an optional implementation, the splicing block is provided with a first protruding portion close to the surface of the stator assembly, and a limiting groove limiting the first magnet group or the second magnet group is formed between two adjacent first protruding portions along the circumference of the stator assembly.

[0011] In an optional implementation, the splicing block is further provided with a second protruding portion close to the surface of the stator assembly, the second protruding portion is arranged on both sides of the first protruding portion, and the protruding height of the first protruding portion is greater than the protruding height of the second protruding portion.

[0012] In an alternative embodiment, the connecting surface of one of any two connected said splicing blocks is provided with a first positioning protrusion, and the connecting surface of the other is provided with a first positioning groove, the first positioning protrusion is arranged in the first positioning groove, and the two are limited in position along the radial direction of the stator assembly;

[0013] And / or, in any two connected said splicing blocks, at least one surface of said splicing block away from the surface of the stator assembly is provided with a first welding groove, and the first welding groove is arranged at the joint of the two said splicing blocks.

[0014] In an alternative embodiment, along the depth direction of the first positioning groove, the first positioning groove and the first positioning protrusion are limited in position to each other.

[0015] In an alternative embodiment, each said stator block comprises a stator yoke, a first stator tooth, and a second stator tooth, the first stator tooth is arranged on the surface of the stator yoke close to the first magnetic conductor, the second stator tooth is arranged on the surface of the stator yoke close to the second magnetic conductor, a plurality of said stator blocks are arranged in sequence along the circumferential direction of the stator assembly, and the stator yokes of any two adjacent said stator blocks are connected;

[0016] The stator assembly further comprises:

[0017] a first winding wound around the first stator tooth;

[0018] a second winding wound around the second stator tooth.

[0019] In an alternative embodiment, the connecting surface of one of any two connected said stator yokes is provided with a second positioning protrusion, and the connecting surface of the other is provided with a second positioning groove, the second positioning protrusion is arranged in the second positioning groove, and the two are limited in position along the radial direction of the stator assembly;

[0020] And / or, in any two connected said stator yokes, at least one surface of said stator yoke is provided with a second welding groove, and the second welding groove is arranged at the joint of the two said stator yokes.

[0021] In an alternative embodiment, along the depth direction of the second positioning groove, the second positioning groove and the second positioning protrusion are limited in position to each other.

[0022] In an alternative embodiment, the winding directions of the first winding and the second winding are the same.

[0023] And / or, the first magnet group and the second magnet group each adopts a Halbach array, and the magnetic field strength of the first magnet group on the side close to the stator assembly is greater than that on the side far from the stator assembly, and the magnetic field strength of the second magnet group on the side far from the stator assembly is greater than that on the side close to the stator assembly.

[0024] And / or, the stator block is arranged as an oriented silicon steel block.

[0025] In a second aspect, the utility model also provides a carrier, comprising the double rotor motor above.

[0026] The double rotor motor provided by the utility model adopts a plurality of splicing blocks to enclose a magnetic conducting piece, can be cut flexibly according to the shape and size of the splicing blocks, and the size of each splicing block is relatively small, so that the splicing blocks can be arranged more closely on the raw material plate during cutting, thereby reducing the waste of the plate edge.

[0027] In addition, the traditional method of forming a ring-shaped iron core needs to cut off the central circular area of the material, which is easy to cause a large amount of material waste. In the embodiment, the plurality of splicing blocks are spliced into a ring-shaped magnetic conducting piece, which can avoid the process requirement of directly cutting the central circular area of the material, thereby greatly reducing the material waste.

[0028] In addition, compared with the whole ring-shaped iron core, the structure of a single splicing block is relatively simple, and the dependence on large equipment is lower, so that the processing difficulty of the splicing block is greatly reduced. In addition, the splicing block is smaller in size, which is convenient for adopting efficient processing processes such as stamping, not only improves the production efficiency, but also reduces the scrap rate caused by the large processing difficulty, and further reduces the cost.

[0029] The carrier provided by the utility model comprises the double rotor motor provided by the utility model, and also comprises all the advantages of the double rotor motor. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0031] Figure 1 The structure schematic view of the stator and the rotor of the double rotor motor provided by the utility model embodiment is shown in the figure.

[0032] Figure 2 The local schematic view of the stator and the rotor of the double rotor motor provided by the utility model embodiment is shown in the figure.

[0033] Figure 3 For Figure 2 magnetic field distribution schematic view of the view shown;

[0034] Figure 4 For the structure schematic view of the second magnetic member provided by the embodiment of the utility model;

[0035] Figure 5 For the structure schematic view of the ring structure that the stator block splices;

[0036] Figure 6 For the structure schematic view of the splicing block connection;

[0037] Figure 7 For the structure schematic view of the splicing block provided by the embodiment of the utility model;

[0038] Figure 8 For the connection structure schematic view between the adjacent splicing blocks provided by the embodiment of the utility model;

[0039] Figure 9 For the structure schematic view of the stator block connection provided by the embodiment of the utility model;

[0040] Figure 10 For the structure schematic view of the stator block provided by the embodiment of the utility model;

[0041] Figure 11 For the connection structure schematic view between the adjacent stator blocks provided by the embodiment of the utility model;

[0042] Figure 12 For the structure schematic view of the second magnet group provided by the embodiment of the utility model is arranged in the second magnetic member using Halbach array.

[0043] Explanation of reference signs:

[0044] 1, stator assembly; 101, stator block; 1011, stator yoke; 1012, first stator tooth; 1013, second stator tooth; 102, first winding; 103, second winding; 104, second positioning protrusion; 105, second positioning groove; 106, second welding groove; 2, first rotor; 201, first magnetic member; 202, first magnet group; 3, second rotor; 301, second magnetic member; 302, second magnet group; 4, splicing block; 401, first protruding part; 402, second protruding part; 403, first positioning protrusion; 404, first positioning groove; 405, first welding groove. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0046] The traditional double-rotor motor mainly comprises a stator, an inner rotor arranged inside the stator and an outer rotor arranged outside the stator. At present, the inner rotor and the outer rotor usually adopt a circular core, and the cutting size thereof is close to the circumscribed square of the core in the processing process. The cutting size of this cutting mode is too large, resulting in that a large amount of material is discarded by cutting, which causes serious material waste.

[0047] In order to solve or improve the problem of the large cutting size of the motor rotor in the related art, the utility model embodiments provide a double-rotor motor and a carrier.

[0048] The embodiments of the utility model will be described below in combination with Figures 1 to 12 , and the double-rotor motor provided in the embodiments of the utility model.

[0049] Specifically, the double-rotor motor comprises a stator assembly 1, a first rotor 2 and a second rotor 3.

[0050] Among them, the stator assembly 1 is arranged as a ring structure. Specifically, the stator assembly 1 is used to generate a changing magnetic field. Optionally, the stator assembly 1 comprises a plurality of stator blocks 101, and the plurality of stator blocks 101 are sequentially spliced to form a ring structure.

[0051] The first rotor 2 comprises a first magnetic conducting member 201 and a first magnet group 202.

[0052] The first magnetic conducting member 201 is rotatably sleeved on the outside of the stator assembly 1. Specifically, the first magnetic conducting member 201 is arranged as a ring structure, and the first magnetic conducting member 201 is concentrically sleeved on the outside of the stator assembly 1. Optionally, the first magnetic conducting member 201 is arranged as a core.

[0053] The first magnet group 202 is arranged between the first magnetic conducting member 201 and the stator assembly 1. Optionally, the first magnet group 202 is arranged on the side of the first magnetic conducting member 201 close to the stator assembly 1, and there is an air gap between the first magnet group 202 and the stator assembly 1. Optionally, the first magnet group 202 comprises a plurality of permanent magnets, and the plurality of permanent magnets are sequentially arranged along the circumference of the stator assembly 1.

[0054] The second rotor 3 comprises a second magnetic conducting member 301 and a second magnet group 302.

[0055] The second magnetic conductor 301 is rotatably sleeved on the inner side of the stator assembly 1. Specifically, the second magnetic conductor 301 is arranged in a ring structure, and the second magnetic conductor 301 is concentrically sleeved on the inner side of the stator assembly 1. Alternatively, the second magnetic conductor 301 is arranged as a core.

[0056] The second magnet group 302 is arranged between the second magnetic conductor 301 and the stator assembly 1. Alternatively, the second magnet group 302 is arranged on the side of the second magnetic conductor 301 close to the stator assembly 1, and there is an air gap between the second magnet group 302 and the stator assembly 1. Alternatively, the second magnet group 302 includes a plurality of permanent magnets, and the plurality of permanent magnets are arranged in sequence along the circumference of the stator assembly 1.

[0057] Further, at least one of the first magnetic conductor 201 and the second magnetic conductor 301 is formed by a plurality of splicing blocks 4 arranged in sequence along the circumference of the stator assembly 1 and connected. Alternatively, the first magnetic conductor 201 is arranged in a ring structure enclosed by a plurality of splicing blocks 4, and the plurality of splicing blocks 4 are arranged in sequence along the circumference of the stator assembly 1 and connected. Alternatively, the second magnetic conductor 301 is arranged in a ring structure enclosed by a plurality of splicing blocks 4, and the plurality of splicing blocks 4 are arranged in sequence along the circumference of the stator assembly 1 and connected.

[0058] In this embodiment, the magnetic conductor is formed by a plurality of splicing blocks 4, which can be cut flexibly according to the shape and size of the splicing blocks 4, and the size of each splicing block 4 is relatively small, which can be arranged more closely on the raw material plate during cutting, thereby reducing the waste of plate edge.

[0059] In addition, the traditional method of forming a ring-shaped core requires cutting off the central circular area of the material, which is easy to cause a large amount of material waste. In this embodiment, the magnetic conductor is formed by a plurality of splicing blocks 4, which can avoid the process requirement of directly cutting the central circular area of the material, thereby greatly reducing the material waste.

[0060] In addition, compared with the whole ring-shaped core, the structure of a single splicing block 4 is relatively simple, and the dependence on large equipment is lower, thereby greatly reducing the processing difficulty of the splicing block 4. In addition, the splicing block 4 is smaller in size, which is convenient for using high-efficiency processing technology such as stamping, thereby not only improving the production efficiency, but also reducing the scrap rate caused by the large processing difficulty, and further reducing the cost.

[0061] In this embodiment, by arranging the second rotor 3 and the first rotor 2 on the inner and outer sides of the stator assembly 1, the first rotor 2 and the second rotor 3 interact with the stator assembly 1, thereby fully utilizing the magnetic flux path around the stator assembly 1, and realizing higher electromagnetic energy conversion efficiency.

[0062] In addition, the first rotor 2 and the second rotor 3 interact with the stator respectively, enabling the motor to generate greater torque output, thereby significantly improving the power density per unit volume.

[0063] Furthermore, the stator assembly 1 is designed as multiple stator blocks 101. The geometry of each stator block 101 can be optimized according to actual needs, reducing unnecessary material removal. Each stator block 101 is small in size, making it relatively easy to manufacture and suitable for use with small equipment. Specifically, the advantages of setting the stator assembly as multiple stator blocks 101 are similar to the advantages of setting the magnetic conductor as multiple splicing blocks 4, and will not be elaborated further.

[0064] refer to Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments of this utility model, the splicing block 4 has a first protrusion 401 on its surface near the stator assembly 1. Along the circumference of the stator assembly 1, a limiting groove is formed between two adjacent first protrusions 401 to limit the first magnet group 202 or the second magnet group 302. That is, along the circumference of the stator assembly 1, at least a portion of the permanent magnets in the first magnet group 202 or the second magnet group 302 abut against the corresponding first protrusion 401.

[0065] Specifically, taking the first magnetic conductive component 201 as an example, its first protrusion 401 is disposed on the surface of the splicing block 4 near the stator assembly 1, that is, the inner surface of the splicing block 4. There is a gap between the first protrusions 401 of two adjacent splicing blocks 4 to form a limiting groove between them, which can be used to install the corresponding permanent magnet in the first magnet group 202.

[0066] Taking the second magnetic conductive element 301 as an example, its first protrusion 401 is provided on the surface of the splicing block 4 near the stator assembly 1, that is, the outer surface of the splicing block 4. There is a gap between the first protrusions 401 of two adjacent splicing blocks 4 to form a limiting groove between them, which can be used to install the corresponding permanent magnet in the second magnet group 302.

[0067] In this embodiment, the first protrusion 401 can effectively restrict the movement of the magnet assembly in the circumferential direction of the motor, ensuring that the magnet assembly maintains a fixed position during motor operation and ensuring stable motor operation.

[0068] In addition, the first protrusion 401 serves as a limiting structure, providing a clear positioning reference for the installation of the magnet assembly. This simplifies the assembly process, reduces manual adjustment steps during assembly, improves assembly efficiency, and lowers assembly costs.

[0069] In some embodiments of the utility model, the surface of the splicing block 4 close to the stator assembly 1 is further provided with a second protruding part 402. The two sides of the first protruding part 401 are both provided with the second protruding part 402, and the protruding height of the first protruding part 401 is greater than the protruding height of the second protruding part 402. The second protruding part 402 is used for supporting the permanent magnet in the first magnet group 202 or the second magnet group 302.

[0070] Specifically, taking the first magnetic conducting piece 201 as an example, the first protruding part 401 of the two adjacent splicing blocks 4 has a spacing, and the corresponding permanent magnet in the first magnet group 202 is installed between the two first protruding parts 401 and is supported by the two second protruding parts 402. The two second protruding parts 402 of the two adjacent splicing blocks 4 form a containing groove, and the containing groove can contain fixing glue, so as to fix the permanent magnet on the first magnetic conducting piece 201 by the fixing glue.

[0071] Taking the second magnetic conducting piece 301 as an example, the first protruding part 401 of the two adjacent splicing blocks 4 has a spacing, and the corresponding permanent magnet in the second magnet group 302 is installed between the two first protruding parts 401 and is supported by the two second protruding parts 402. The two second protruding parts 402 of the two adjacent splicing blocks 4 form a containing groove, and the containing groove can contain fixing glue, so as to fix the permanent magnet on the first magnetic conducting piece 201 by the fixing glue.

[0072] In the embodiment, the containing groove formed between the second protruding parts 402 of the two adjacent splicing blocks 4 can conveniently contain the fixing glue, provide an ideal storage space for the fixing glue, avoid the problem of glue overflow or uneven distribution, and make the fixing glue evenly distributed on the surface of the permanent magnet, so that the permanent magnet is more firmly fixed on the splicing block 4.

[0073] In some embodiments of the utility model, in any two splicing blocks 4 connected, the connecting surface of one is provided with a first positioning protrusion 403, and the connecting surface of the other is provided with a first positioning groove 404. Or, the first positioning protrusion 403 and the first positioning groove 404 are respectively arranged on the butt joint end surfaces of the two splicing blocks 4. The first positioning protrusion 403 is arranged in the first positioning groove 404, and the two are limited in position along the radial direction of the stator assembly 1.

[0074] In the embodiment, the design of the first positioning protrusion 403 and the first positioning groove 404 can accurately position the splicing block 4 in the radial direction, ensure that each splicing block 4 can be accurately aligned during assembly, avoid misalignment or deviation between the splicing blocks 4, thereby guaranteeing the roundness and concentricity of the entire magnetic conducting piece and improving the overall performance of the motor. In addition, the splicing block 4 does not need to be repeatedly adjusted during assembly, which can improve the assembly efficiency and reduce the assembly difficulty.

[0075] In addition, the cooperation of the first positioning protrusion 403 and the first positioning groove 404 can effectively limit the movement of the splicing block 4 in the radial direction, prevent loosening or deformation of the splicing block 4 during operation due to vibration or centrifugal force, thereby enhancing the connection strength between the splicing blocks 4 and improving the structural stability of the entire magnetic conducting piece.

[0076] Reference Figure 7 As shown in some embodiments provided by the utility model, the butt joint end faces at both ends of the splicing block 4 are respectively provided with the first positioning protrusion 403 and the first positioning groove 404. In this way, the shape of each splicing block 4 can be the same, thereby reducing the processing difficulty.

[0077] In some embodiments provided by the utility model, the surface of at least one splicing block 4 away from the stator assembly 1 is provided with the first welding groove 405, and the first welding groove 405 is arranged at the joint of the two splicing blocks 4.

[0078] In this embodiment, the first welding groove 405 is located at the joint of the two splicing blocks 4, which provides an ideal contact surface and space for welding. Through filling of welding material or fusion welding in the welding groove, firm connection between the splicing blocks 4 can be achieved, thereby significantly enhancing the connection strength between the splicing blocks 4 and avoiding loosening or separation problems caused by vibration, centrifugal force or other external loads.

[0079] In addition, the existence of the first welding groove 405 provides a clear operation area for the welding work, so that the welding process is more standardized and controllable. For example, the welding worker can more accurately fill the welding material into the welding groove, ensuring the consistency of the welding quality.

[0080] In some embodiments provided by the utility model, the splicing block 4 is provided with the first welding groove 405, and the first positioning protrusion 403 and the first positioning groove 404 are also used for limiting the positions of the adjacent splicing blocks 4.

[0081] In this embodiment, the first positioning protrusion 403 and the first positioning groove 404 limit each other in the radial direction of the stator assembly 1, and the welding in the first welding groove 405 further enhances the connection strength between the splicing blocks 4 in the direction perpendicular to the butt joint end face. The combination of the two can fix the splicing blocks 4 from different directions and modes, so that the splicing structure is more firm and reliable.

[0082] Through the limiting cooperation of the first positioning protrusion 403 and the first positioning groove 404, the position accuracy between the adjacent splicing blocks 4 during the welding process can be ensured, and the connection accuracy between the splicing blocks 4 can be ensured.

[0083] In some embodiments provided by the utility model, the first positioning groove 404 and the first positioning protrusion 403 limit each other in the depth direction of the first positioning groove 404.

[0084] In the embodiment, the first positioning groove 404 can also limit the first positioning protrusion 403 in the depth direction, and can form more effective limiting of the first positioning protrusion 403 in the circumferential direction. For example, during the operation of the motor, the rotor will be subjected to circumferential force generated by electromagnetic torque and other factors. The circumferential limiting design in the embodiment can better resist these circumferential forces, prevent relative displacement between the splicing blocks 4 in the circumferential direction, and thus ensure the high accuracy and stability of the relative position between the splicing blocks 4.

[0085] Optionally, as shown in Figure 6 and Figure 7 , the first positioning groove 404 is provided as a trapezoidal groove, specifically, the cross section of the first positioning groove 404 in the axial direction of the stator assembly 1 is trapezoidal. Correspondingly, the cross section of the first positioning protrusion 403 in the axial direction of the stator assembly 1 is trapezoidal, and the first positioning protrusion 403 can be inserted into the first positioning groove 404 in the axial direction of the stator assembly.

[0086] Of course, the first positioning groove 404 is not limited to be provided as a trapezoidal groove, for example, in some embodiments not shown in the utility model, the first positioning groove 404 can be provided as a T-shaped groove, that is, the cross section of the first positioning groove 404 in the axial direction of the stator assembly 1 is “T” shaped, and correspondingly, the cross section of the first positioning protrusion 403 in the axial direction of the stator assembly 1 is “T” shaped.

[0087] In some embodiments provided by the utility model, the stator block 101 comprises a stator yoke 1011, a first stator tooth 1012 and a second stator tooth 1013. The first stator tooth 1012 is arranged on the surface of the stator yoke 1011 close to the first magnetic conductor 201, and the second stator tooth 1013 is arranged on the surface of the stator yoke 1011 close to the second magnetic conductor 301. A plurality of stator blocks 101 are arranged in sequence in the circumferential direction of the stator assembly 1, and the stator yokes 1011 of any two adjacent stator blocks 101 are connected.

[0088] Further, the stator assembly 1 further comprises a first winding 102 and a second winding 103.

[0089] The first winding 102 is wound on the first stator tooth 1012.

[0090] The second winding 103 is wound on the second stator tooth 1013.

[0091] In the embodiment, the first winding 102 and the second winding 103 are wound around the first stator tooth 1012 and the second stator tooth 1013 respectively, interact with the first rotor 2 and the second rotor 3, and can generate a stronger magnetic field in the same space. The two windings are electromagnetically coupled with the corresponding rotors respectively, increase the electromagnetic interaction area and strength of the motor, thereby improving the power density of the motor, enabling it to output greater torque and power, and meeting the application requirements of high load and high performance.

[0092] In addition, the independent arrangement of the first winding 102 and the second winding 103 provides more possibilities for the control of the motor. For example, by independently controlling the current, voltage and other parameters of the two windings, more flexible speed regulation, torque regulation and other control strategies can be realized to meet the operation requirements under different working conditions.

[0093] In some embodiments of the utility model, the connecting surface of one of the two stator yokes 1011 is provided with a second positioning protrusion 104, and the connecting surface of the other is provided with a second positioning groove 105. Alternatively, the second positioning protrusion 104 and the second positioning groove 105 are arranged on the abutting end surfaces of the two stator yokes 1011 respectively. The second positioning protrusion 104 is arranged in the second positioning groove 105, and the two are limited in position along the radial direction of the stator assembly 1.

[0094] In the embodiment, the design of the second positioning protrusion 104 and the second positioning groove 105 can accurately position the stator yoke 1011 radially, ensure that each stator yoke 1011 can be accurately aligned during assembly, avoid misalignment or deviation between the stator yokes 1011, and thus ensure the roundness and concentricity of the entire stator assembly 1 and improve the overall performance of the motor. In addition, the stator block 101 does not need to be adjusted repeatedly during assembly, which can improve the assembly efficiency and reduce the assembly difficulty.

[0095] In addition, the cooperation of the second positioning protrusion 104 and the second positioning groove 105 can effectively limit the movement of the stator block 101 along the radial direction, prevent it from loosening or deforming due to vibration or centrifugal force during operation, and thus enhance the connection strength between the stator blocks 101 and improve the structural stability of the entire stator assembly 1.

[0096] Reference Figure 9 and Figure 10 As shown in FIGS. 3 and 4, optionally, the abutting end surfaces at both ends of each stator yoke 1011 are respectively provided with a first positioning protrusion 403 and a first positioning groove 404. In this way, the shape of each stator block 101 can be the same, thereby reducing the processing difficulty.

[0097] In some embodiments of the utility model, in any two connected stator yokes 1011, the surface of at least one stator yoke 1011 is provided with a second welding groove 106, and the second welding groove 106 is arranged at the joint of the two stator yokes 1011.

[0098] In the embodiment, the second welding groove 106 is located at the joint of the two stator yokes 1011, which provides an ideal contact surface and space for welding, and through filling welding material or welding in the welding groove, the firm connection between the stator yokes 1011 can be realized, thereby the connection strength between the stator yokes 1011 is significantly enhanced, and the problems of loosening or separation caused by vibration, centrifugal force or other external loads are avoided.

[0099] In addition, the existence of the second welding groove 106 provides a clear operation area for the welding work, so that the welding process is more standardized and controllable. For example, the welding worker can more accurately fill the welding material into the welding groove, ensuring the consistency of the welding quality.

[0100] In some embodiments of the utility model, the stator yoke 1011 is provided with the second welding groove 106, and the adjacent stator yokes 1011 are further limited by the second positioning protrusion 104 and the second positioning groove 105.

[0101] In the embodiment, the second positioning protrusion 104 and the second positioning groove 105 are limited in the radial direction of the stator assembly 1, and the welding in the second welding groove 106 further enhances the connection strength between the stator yokes 1011 in the direction perpendicular to the butt joint end face. The combination of the two can fix the stator yokes 1011 from different directions and modes, so that the splicing structure is more firm and reliable.

[0102] Through the limiting cooperation of the second positioning protrusion 104 and the second positioning groove 105, the position accuracy between the adjacent stator yokes 1011 in the welding process can be ensured, and then the connection accuracy between the stator yokes 1011 is ensured.

[0103] In some embodiments of the utility model, along the depth direction of the second positioning groove 105, the second positioning groove 105 and the second positioning protrusion 104 are limited.

[0104] In the embodiment, the second positioning groove 105 can also limit the second positioning protrusion 104 in the depth direction, so that more effective limiting of the second positioning protrusion 104 in the circumferential direction can be formed. For example, in the process of motor operation, the stator will be subjected to circumferential force generated by electromagnetic torque and other factors. The circumferential limiting design in the embodiment can better resist these circumferential forces, prevent the relative displacement of the stator blocks 101 in the circumferential direction, and thus ensure the high accuracy and stability of the relative position between the stator blocks 101.

[0105] Optionally, with reference to Figures 9 to 11 As shown, the second positioning groove 105 is provided as a trapezoidal groove, specifically, the cross section of the second positioning groove 105 along the axial direction of the stator assembly 1 is trapezoidal. Correspondingly, the cross section of the second positioning protrusion 104 along the axial direction of the stator assembly 1 is trapezoidal, and the second positioning protrusion 104 can be inserted into the second positioning groove 105 along the axial direction of the stator assembly.

[0106] Of course, the second positioning groove 105 is not limited to be provided as a trapezoidal groove, for example, in some embodiments of the utility model not shown, the second positioning groove 105 can be provided as a T-shaped groove, that is, the cross section of the second positioning groove 105 along the axial direction of the stator assembly 1 is "T" shaped, and correspondingly, the cross section of the second positioning protrusion 104 along the axial direction of the stator assembly 1 is "T" shaped.

[0107] In some embodiments provided by the utility model, the winding directions of the first winding 102 and the second winding 103 are the same.

[0108] In the embodiment, the winding directions of the first winding 102 and the second winding 103 are the same, and the directions of the magnetic fields generated by them are consistent in the corresponding areas, so that the directions of the magnetic field forces received by the first rotor 2 and the second rotor 3 acting on the first winding 102 and the second winding 103 respectively have coordination. During the operation of the motor, the consistent magnetic field direction helps to enhance the magnetic field coupling effect between the stator and the two rotors, so that the electromagnetic energy can be more efficiently transmitted, the electromagnetic conversion efficiency of the motor is improved, and then the output power and torque performance of the motor are improved.

[0109] With reference to Figure 2 , Figure 3 and Figure 12 As shown, in some embodiments provided by the utility model, the first magnet group 202 and the second magnet group 302 both adopt Halbach arrays. The Halbach array can significantly enhance the magnetic field strength on one side while weakening the magnetic field strength on the other side.

[0110] The magnetic field strength on the side close to the stator assembly 1 of the first magnet group 202 is greater than the magnetic field strength on the side away from the stator assembly 1. The magnetic field strength on the side close to the stator assembly 1 of the first magnet group 202 is greater, which means that more magnetic flux is guided to the area interacting with the stator assembly 1, thereby improving the magnetic field utilization rate.

[0111] The magnetic field strength on the side away from the stator assembly 1 of the second magnet group 302 is greater than the magnetic field strength on the side close to the stator assembly 1. The magnetic field strength on the side away from the stator assembly 1 of the second magnet group 302 is greater, which can effectively reduce the interference to the stator assembly 1, while ensuring that the magnetic field utilization of the outer space is more efficient.

[0112] Further, both magnet groups adopt Halbach array, and the winding directions of the first winding 102 and the second winding 103 are the same, so that the magnetic circuit between the stator assembly 1 and the first rotor 2 and the second rotor 3 is the first rotor 2→air gap→the first stator block 101→air gap→the second rotor 3→air gap→the second stator block 101→the first rotor 2, for example, wherein the first stator block 101 and the second stator block 101 are two connected stator blocks 101. Figure 3

[0113] In the embodiment, the magnetic circuit structure forms a relatively compact and closed path, so that the magnetic lines can be more effectively transmitted between the first rotor 2, the second rotor 3 and the stator block 101, and the leakage of magnetic flux can be reduced, the permeability of the magnetic circuit is improved, and the electromagnetic conversion efficiency of the motor is improved.

[0114] In addition, the magnetic field interaction between the first rotor 2 and the second rotor 3 and the stator block 101 is enhanced, and the two rotors can be more fully driven by the stator magnetic field, thereby generating a larger electromagnetic torque.

[0115] In some embodiments of the utility model, the stator block 101 is provided as an oriented silicon steel block.

[0116] In the embodiment, in the magnetic circuit of the dual-rotor motor, the oriented silicon steel block with high permeability can make the magnetic lines pass more smoothly and reduce the magnetic resistance. This helps to enhance the magnetic field coupling effect between the stator and the rotor, so that the motor can generate a stronger magnetic field under the same excitation condition, thereby improving the output power and torque density of the motor.

[0117] In addition, the grains inside the oriented silicon steel are uniformly oriented. The uniformity of the grain orientation makes the magnetic properties of the oriented silicon steel block relatively uniform at different positions, thereby ensuring the stability of the magnetic field distribution in the motor magnetic circuit.

[0118] The utility model embodiment further provides a carrier.

[0119] Specifically, the carrier includes the dual-rotor motor as above.

[0120] The carrier includes the dual-rotor motor, and also includes all the advantages of the dual-rotor motor, so this will not be repeated.

[0121] In addition, the carrier described in the present application includes but is not limited to vehicles and aircraft.

[0122] The vehicle can be a fuel vehicle or a new energy vehicle.

[0123] ​wherein, for the vehicle, the vehicle comprises an in-wheel motor, and the in-wheel motor is configured as the double-rotor motor as above.

[0124] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A dual-rotor motor, characterized in that, include: The stator assembly (1) includes multiple stator blocks (101), which are sequentially spliced ​​into a ring structure; The first rotor (2) includes a first magnetic conductor (201) and a first magnet assembly (202). The first magnetic conductor (201) is rotatably mounted on the outside of the stator assembly (1), and the first magnet assembly (202) is disposed between the first magnetic conductor (201) and the stator assembly (1). The second rotor (3) includes a second magnetic conductor (301) and a second magnet assembly (302). The second magnetic conductor (301) is rotatably mounted on the inner side of the stator assembly (1), and the second magnet assembly (302) is disposed between the second magnetic conductor (301) and the stator assembly (1). At least one of the first magnetic conductive element (201) and the second magnetic conductive element (301) is formed by splicing together multiple splicing blocks (4) arranged circumferentially along the stator assembly (1) and connected in sequence.

2. The dual-rotor motor according to claim 1, characterized in that, The splicing block (4) has a first protrusion (401) on its surface near the stator assembly (1). Along the circumference of the stator assembly (1), a limiting groove is formed between two adjacent first protrusions (401) to limit the first magnet group (202) or the second magnet group (302).

3. The dual-rotor motor according to claim 2, characterized in that, The splicing block (4) is provided with a second protrusion (402) on the surface near the stator assembly (1). The second protrusion (402) is provided on both sides of the first protrusion (401), and the protrusion height of the first protrusion (401) is greater than the protrusion height of the second protrusion (402).

4. The dual-rotor motor according to claim 1, characterized in that, In any two connected splicing blocks (4), one of the connecting surfaces is provided with a first positioning protrusion (403), and the other of the connecting surfaces is provided with a first positioning groove (404). The first positioning protrusion (403) is disposed in the first positioning groove (404), and the two are mutually limited along the radial direction of the stator assembly (1). And / or, in any two connected splicing blocks (4), at least one splicing block (4) has a first welding groove (405) on its surface away from the stator assembly (1), and the first welding groove (405) is located at the joint of the two splicing blocks (4).

5. The dual-rotor motor according to claim 4, characterized in that, Along the depth direction of the first positioning groove (404), the first positioning groove (404) and the first positioning protrusion (403) limit each other.

6. The dual-rotor motor according to any one of claims 1-5, characterized in that, Each stator block (101) includes a stator yoke (1011), a first stator tooth (1012), and a second stator tooth (1013). The first stator tooth (1012) is disposed on the surface of the stator yoke (1011) near the first magnetic conductor (201), and the second stator tooth (1013) is disposed on the surface of the stator yoke (1011) near the second magnetic conductor (301). The stator yokes (1011) of any two adjacent stator blocks (101) are connected. The stator assembly (1) further includes: The first winding (102) is wound around the first stator tooth (1012); The second winding (103) is wound on the second stator tooth (1013).

7. The dual-rotor motor according to claim 6, characterized in that, In any two connected stator yokes (1011), one of them has a second positioning protrusion (104) on its connecting surface and the other has a second positioning groove (105) on its connecting surface. The second positioning protrusion (104) is disposed in the second positioning groove (105), and the two are mutually limited along the radial direction of the stator assembly (1). And / or, in any two connected stator yokes (1011), at least one of the stator yokes (1011) has a second welding groove (106) on its surface, the second welding groove (106) being disposed at the joint of the two stator yokes (1011).

8. The dual-rotor motor according to claim 7, characterized in that, Along the depth direction of the second positioning groove (105), the second positioning groove (105) and the second positioning protrusion (104) limit each other.

9. The dual-rotor motor according to claim 6, characterized in that, The first winding (102) and the second winding (103) have the same winding direction; And / or, both the first magnet group (202) and the second magnet group (302) adopt a Hellbeck array, and the magnetic field strength of the first magnet group (202) on the side closer to the stator assembly (1) is greater than the magnetic field strength on the side farther from the stator assembly (1), and the magnetic field strength of the second magnet group (302) on the side farther from the stator assembly (1) is greater than the magnetic field strength on the side closer to the stator assembly (1); And / or, the stator block (101) is configured as an oriented silicon steel block.

10. A vehicle, characterized in that, Including the dual-rotor motor as described in any one of claims 1-9.

Images