Rotor, motor and vehicle

Abstract

The embodiment of the utility model provides a rotor, a motor and a vehicle. The rotor at least comprises a rotor body; the rotor assembly comprises a plurality of iron core teeth, the iron core teeth are distributed in the circumferential direction of the rotor body, the iron core teeth are detachably connected to the rotor body, and the iron core teeth are suitable for winding coils. According to the rotor provided by the invention, as the iron core teeth are detachable in use, when coils are wound on the iron core teeth, the winding is not limited by the sizes of the interval notches between the iron core teeth, and a higher coil filling rate can be realized, so that higher motor power density is achieved.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and specifically relates to a rotor, a motor and a vehicle. Background Art

[0002] The rotor core teeth and yoke of a traditional electromagnetic motor are an integrated structure, and the coil needs to be wound from the slot to the rotor teeth. This method of winding from the slot causes the motor rotor part to have an insufficient coil filling rate problem. Utility Model Content

[0003] The present application aims to provide a rotor, a motor and a vehicle to solve the problem of insufficient motor power density caused by insufficient filling rate of existing rotor coils, which in turn affects the user experience.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, the present application discloses a rotor, characterized in that the rotor comprises: a rotor body; a rotor assembly, comprising a plurality of core teeth, wherein the plurality of core teeth are distributed along the circumference of the rotor body, the core teeth are detachably connected to the rotor body, and the core teeth are suitable for winding coils.

[0006] Optionally, the rotor also includes a plurality of first mounting structures, the first mounting structures including a first part and a second part that cooperate with each other, the first parts of the plurality of first mounting structures are arranged on the rotor body and distributed along the circumference of the rotor body, and the second parts of the plurality of first mounting structures are arranged one by one on the core teeth; the first part is one of the protrusion and the groove; the second part is the other of the protrusion and the groove.

[0007] Optionally, the first portion is a protrusion, and the second portion is a groove, and the protrusion cooperates with the groove so that the plurality of core teeth are connected to the rotor body.

[0008] Optionally, a plurality of second mounting structures are further provided on the rotor body, and a plurality of the core teeth are mounted in the second mounting structures in a one-to-one correspondence.

[0009] Optionally, the second mounting structure is a card slot.

[0010] Optionally, the first portion of the first mounting structure is located between two side walls of the slot.

[0011] Optionally, the rotor further includes a limiting mechanism, the limiting structure is arranged on the first mounting structure, and the limiting structure includes a convex head and a concave portion.

[0012] Optionally, the convex head is arranged on the first part, and the concave part is arranged on the second part.

[0013] Optionally, a plurality of the rotor assemblies are provided, and the plurality of rotor assemblies are stacked along the axial direction of the rotor body to form a rotor stack.

[0014] Optionally, the rotor further comprises a fixing protection device, wherein the fixing protection device is connected and fixed to the rotor lamination.

[0015] Optionally, the fixing protection device includes two end covers, and the two end covers are connected to two ends of the rotor body along the axial direction of the rotor body.

[0016] Optionally, the core tooth is also provided with a first through hole which passes through the core tooth along the axial direction of the rotor body; the end cover is provided with a second through hole at a position corresponding to the first through hole; the rotor also includes a fastener, which is passed through the second through hole and its corresponding first through hole to connect the rotor lamination and the two end covers.

[0017] Optionally, the fixing protection device further comprises a protective shell, which is circumferentially wrapped around the outer surfaces of the rotor lamination and the end cover.

[0018] Optionally, the rotor further includes a rotating shaft, and the rotor body is further provided with a mounting hole, and the rotating shaft is connected to the mounting hole.

[0019] In a second aspect, the present application further discloses a motor, characterized in that the motor comprises a rotor as described in any one of the above items.

[0020] In a third aspect, the present application also discloses a vehicle, characterized in that the vehicle includes the motor described above.

[0021] In an embodiment of the present application, a rotor is provided, wherein the rotor comprises a detachably connected rotor body and a rotor assembly, and the rotor tooth assembly further comprises core teeth suitable for winding coils. In a specific application, the coils are wound onto the core teeth while the core teeth are removed from the rotor body. After the winding is completed, the core teeth wound with the coil group are connected to the rotor body. Since the core teeth are detachable, when the coils are wound onto the core teeth, the size of the spacing slots between the core teeth will not be limited, so a higher coil filling rate can be achieved, thereby achieving a higher motor power density.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic diagram of the structure of the rotor described in this application;

[0025] Figure 2 is a cross-sectional schematic diagram of the rotor mounting coil described in the present application;

[0026] Figure 3 is a cross-sectional schematic diagram of the rotor of the present application without the coil installed;

[0027] Figure 4 is a schematic structural diagram of the rotor body described in the present application;

[0028] Figure 5 It is a schematic diagram of the structure of the core teeth described in this application;

[0029] Figure 6 is a schematic diagram of an iron core tooth wound with a coil as described in the present application;

[0030] Figure 7 is a side view of the rotor described in the present application;

[0031] Figure 8 is a schematic cross-sectional view of a rotor with a first through hole described in the present application;

[0032] Fig. 9 is a schematic cross-sectional view of a rotor with a first through hole and without a coil wound therearound as described in the present application;

[0033] Fig.10 is a schematic diagram of the end cap described in the present application;

[0034] Fig.11 is a schematic diagram of an end cap with a second through hole described in the present application;

[0035] Fig.12 is a schematic diagram of a rotor with a protective shell described in this application.

[0036] Figure numerals: 1. rotor body; 11. mounting hole; 2. rotor assembly; 21. core tooth; 211. first through hole; 22. coil; 23. insulating member; 3. first mounting structure; 31. first part; 32. second part; 33. limiting structure; 331. protrusion; 332. recess; 34. gap; 4. second mounting structure; 5. end cover; 51. second through hole; 52. third through hole; 6. fastener; 7. protective shell; 8. rotating shaft. DETAILED DESCRIPTION

[0037] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The embodiments of the present application provide at least one of a rotor, a motor, and a vehicle. The embodiments of the present application may not limit the specific type of the rotor.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7, showing a schematic structural diagram of a rotor described in the present application, the rotor may include at least: a rotor body 1; a rotor assembly 2, including a plurality of core teeth 21, the plurality of core teeth 21 are distributed along the circumference of the rotor body 1, the core teeth 21 are detachably connected to the rotor body 1, and the core teeth 21 are suitable for winding coils 22.

[0043] In an embodiment of the present application, a rotor is provided, the rotor comprising a rotor body 1 and a rotor assembly 2 detachably connected to the rotor body 1, the rotor assembly 2 further comprising a plurality of core teeth 21. In a specific application, the coil 22 is wound onto the core teeth 21 in a disassembled state, and generally, the coil 22 wound onto the core teeth 21 can be wound into a trapezoidal shape with a wide top and a narrow bottom. After the winding is completed, the core teeth 21 wound with the coil 22 are connected to the rotor body 1. Since the core teeth 21 can be disassembled, when the coil group 22 is wound onto the core teeth 21, it will not be limited by the size of the spacing slots between the core teeth 21, and a higher coil filling rate can be achieved, thereby achieving a higher motor power density. Furthermore, an insulating member 23 can be provided between the coil 22 and the core teeth 21, and the coil 22 and the core teeth 21 are insulated by providing the insulating member 23, so as to avoid the danger of overheating of the core teeth 21 due to electromagnetic action. Specifically, the core teeth 21 and the rotor body 1 described in the present application are generally made by stamping a plurality of metal sheets, and specifically electrical steel sheets and the like may be used.

[0044] It should be noted that those skilled in the art can specifically select and set the slot width between the core teeth 21 described in this application according to actual production and use requirements, and this application does not make any specific limitation.

[0045] The rotor provided in the present application, through the detachable core teeth 21, realizes the winding work of the coil 22 when the core teeth 21 and the rotor body 1 are detached, further improving the coil filling rate between the rotor teeth, thereby reducing the space waste between the rotor teeth and improving the power density of the motor.

[0046] Optionally, refer to Figure 3 As shown, the rotor described in the present application also includes a plurality of first mounting structures 3, the first mounting structures 3 include a first part 31 and a second part 32 that cooperate with each other, the first parts 31 of the plurality of first mounting structures 3 are arranged on the rotor body 1 and distributed along the circumference of the rotor body 1, and the second parts 32 of the plurality of first mounting structures 3 are arranged one by one on the core teeth 21; the first part 31 is one of the protrusions and the grooves; the second part 32 is the other of the protrusions and the grooves.

[0047] In the embodiment of the present application, the rotor also includes a plurality of first mounting structures 3, through the one-to-one corresponding and mutually matching first parts 31 and second parts 32, the core teeth 21 are further stably fixedly mounted on the rotor body 1, thereby enhancing the stability and safety of the installation of the rotor body 1 and the core teeth 21. Specifically, the first part 31 can be one of the protrusions or the grooves, and the second part 32 is the other of the protrusions and the grooves, and the protrusions and the grooves match each other to achieve the effect of fixedly mounting the core teeth 21.

[0048] Optionally, the first portion 31 described in the present application is a protrusion, and the second portion 32 is a groove, and the protrusion cooperates with the groove so that the plurality of core teeth 21 are connected to the rotor body 1 .

[0049] In the embodiment of the present application, the first part 31 is selected as a protrusion, and the second part 32 is selected as a groove. Through the cooperation of the protrusion and the groove, the core tooth 21 is connected to the rotor body 1 to improve the connection stability between the core tooth 21 and the rotor body 1. Furthermore, a gap 34 can be provided in the groove of the second part 32. In the process of installing the core tooth 21 wound with the coil 22 onto the rotor body 1, the root of the core tooth 21 with the coil 22 needs to be opened to both sides of the groove to make the installation process easier; after the installation is completed, the core tooth 21 recovers due to elasticity; during the installation process, the gap 34 provided in the groove can make the assembly process more reliable and more conducive to the opening and rebound of the root of the core tooth 21. It should be noted that the width of the gap 34 is smaller than the width of the groove, and the gap 34 does not pass through the core tooth 21.

[0050] Furthermore, the shape of the groove can be selected as a rectangle or a trapezoid. It should be noted that the technical personnel in this field can select the structural shape of the groove according to the actual production and use requirements, and this application does not make any specific restrictions. In order to ensure the structural strength of the core tooth, the ratio of the widest part of the groove to the width at the root of the core tooth 21 should be less than or equal to 0.5.

[0051] The rotor provided in the present application connects the core teeth 21 to the rotor body 1 through protrusions and grooves, so as to improve the connection stability between the core teeth 21 and the rotor body 1.

[0052] Optionally, a plurality of second mounting structures 4 are further provided on the rotor body 1 described in the present application, and a plurality of core teeth 21 are mounted in the second mounting structures 4 in a one-to-one correspondence.

[0053] In the embodiment of the present application, multiple second mounting structures 4 are provided on the rotor body 1, and multiple core teeth 21 are installed one by one in the second mounting structures 4, thereby further improving the stability of the core teeth 21 during the operation of the rotor after being installed on the rotor body 1, thereby improving reliability.

[0054] Optionally, the second mounting structure 4 described in the present application is a card slot.

[0055] In the embodiment of the present application, the second mounting structure 4 is configured as a slot, and the core teeth 21 are snapped into the slot one by one, which improves the accuracy of the rotor teeth 21 being mounted to the rotor body, enhances the stability of the rotor, and improves the reliability. Specifically, the width of the slot can be selected to be consistent with the bottom width of the core teeth 21, so that the core teeth 21 are more firmly connected to the rotor body 1.

[0056] Optionally, the first part 31 of the first mounting structure 3 described in the present application is located between two side walls of the slot.

[0057] In the embodiment of the present application, by arranging the first portion 31 of the first mounting structure 3 between the two side walls of the slot, the stability of the core teeth 21 mounted on the rotor body 1 is enhanced through the fixing and stabilizing effect of the side walls and the first portion 31 .

[0058] Optionally, the rotor described in the present application further includes a limiting mechanism 33 . The limiting structure 33 is disposed on the first mounting structure 3 . The limiting structure 33 includes a protrusion 331 and a recess 332 .

[0059] In the embodiment of the present application, a protrusion 331 and a recessed portion 332 are provided on the first mounting structure 3. Through the design of the protrusion 331 and the recessed portion 332, the installation process of the core tooth 21 is more stable and reliable during the assembly and installation of the core tooth 21 to the rotor body 1. Moreover, since the protrusion 331 and the recessed portion 332 are mutually engaged, the connection stability between the core tooth 21 and the rotor body 1 is enhanced, and the misalignment and looseness between the core tooth 21 and the rotor body 1 are prevented, and the core tooth 21 is further prevented from being separated from the rotor body due to centrifugal force during the operation of the rotor, causing danger.

[0060] Optionally, the first portion 31 described in the present application is provided with a protrusion 331 , and the second portion 32 is provided with a recess 332 .

[0061] In the embodiment of the present application, the protrusion 331 is arranged on the first part, and the recessed part 332 is arranged on the second part 32. The protrusion 331 and the recessed part 332 are mutually engaged, thereby enhancing the connection stability between the core teeth 21 and the rotor body 1, and further preventing the core teeth 21 from detaching from the rotor body due to centrifugal force during the operation of the rotor, thereby preventing the rotor from causing danger.

[0062] Optionally, the rotor assembly 2 described in the present application is provided in plurality, and the plurality of rotor assemblies 2 are stacked along the axial direction of the rotor body 1 to form a rotor stack.

[0063] In the embodiment of the present application, a plurality of rotor assemblies 2 are provided, and the plurality of rotor assemblies 2 are stacked along the axial direction of the rotor body 1 to form a rotor stack, thereby enhancing the output power of the motor equipped with the rotor.

[0064] Optionally, the rotor described in the present application further comprises a fixing protection device, wherein the fixing protection device is connected to fix the rotor lamination.

[0065] In the embodiment of the present application, a fixed protection device is provided to wrap the rotor laminate to protect the rotor. While enhancing the connection stability and reliability of the rotor, it further prevents the core teeth 21 from flying out due to centrifugal force during the operation of the rotor, thereby improving the reliability and safety of the rotor.

[0066] Optionally, the fixing protection device described in the present application includes two end covers 5 , and the two end covers 5 are connected to two ends of the rotor lamination along the axial direction of the rotor body 1 .

[0067] In the embodiment of the present application, end covers 5 are fixedly provided at both ends of the rotor body 1 , and the multiple core teeth 21 on the rotor are further fixed to the rotor body 1 as a whole through the end covers 5 , thereby improving the stability and safety of the rotor.

[0068] Optionally, the core tooth 21 described in the present application is also provided with a first through hole 211 that passes through the core tooth 21 axially along the rotor body 1; the end cover 5 is provided with a second through hole 51 at a position corresponding to the first through hole 211; the rotor also includes a fastener 6, which is passed through the second through hole 51 and its corresponding first through hole 211 to connect the rotor lamination and the two end covers 5.

[0069] In the embodiment of the present application, the core teeth 21 and the end cover 5 are fixed together through the first through hole 211, the second through hole 51 and the fastener 6 that passes through the first through hole 211 and the second through hole 51, so that the rotor can have sufficient structural strength during the rotation process, ensuring that the core teeth 21 will not detach from the rotor body 1 during the rotation process to cause danger, thereby improving the reliability of the rotor.

[0070] Specifically, the first through hole 211 can be set on the center line of the core tooth 21 and close to the tooth top of the core tooth 21 to reduce the impact of setting the through hole on the magnetic circuit performance of the motor; further, the ratio of the diameter of the first through hole 211 to the tooth root width of the core tooth 21 can be set to be less than or equal to 0.33, thereby minimizing the impact of setting the through hole on the electromagnetic circuit performance.

[0071] Specifically, the fastener 6 can be selected as a fastening tool including a nut and a screw. It should be noted that in the specific application process, those skilled in the art can select the specific type of fastener according to actual production requirements, and this application does not make specific restrictions.

[0072] Optionally, the fixed protection device described in the present application further includes a protection shell 7 , which is circumferentially wound around the outer surface of the rotor lamination and the end cover 5 .

[0073] In the embodiment of the present application, the fixing protection device may further include at least a protective shell 7, which is circumferentially wound around the outer surface of the rotor lamination and the end cover 5. Specifically, the protective shell 7 may be selected as a fiber belt with high tensile strength. During the installation process, the fiber belt is glued with structural adhesive and then wrapped around the outside of the rotor. After the structural adhesive is cured, the fiber belt tightly wraps the core teeth 21 around the rotor body 1. Alternatively, the protective shell 7 may be selected as a metal tube, which is simpler to manufacture and has lower costs. During the operation of the rotor, the protective shell 7 can ensure that the core teeth 21 will not separate from the rotor body 1 due to centrifugal force during high-speed rotation, thereby improving the safety and reliability of the rotor.

[0074] It should be noted that technicians in this field can select the material and installation method of the protective shell according to actual production and use requirements, and no specific limitation is made in this application.

[0075] Optionally, the rotor described in the present application further includes a rotating shaft 8 , and the rotor body 1 is further provided with a mounting hole 11 , and the rotating shaft 8 is connected to the mounting hole 11 .

[0076] In the embodiment of the present application, the rotor further includes a rotating shaft 8, and the rotor body 1 is further provided with a mounting hole 11, the rotating shaft 8 is connected to the mounting hole 11, and the rotating shaft 8 is used to connect with an external system to transmit power. Furthermore, a third through hole 52 is also correspondingly provided on the end cover 5, so that the rotating shaft 8 is connected with the external system through the third through hole 52.

[0077] Specifically, the manufacturing and installation process of the rotor provided in the present application can be: after installing the insulating part 23 on the core tooth 21, the coil 22 is wound; the groove of the core tooth 21 wound with the coil 22 is aligned with the protrusion on the rotor body, and the protrusion is clamped close to the groove with the help of an external tool, and the core tooth 21 is installed in place at the same time. After all the core teeth 21 are installed accordingly, the coils 22 on each core tooth 21 are connected in a predetermined manner to form a rotor coil; the end cover 5 is fixedly assembled to the two ends of the rotor by fasteners 6 respectively, and connected to the rotating shaft 8 through the third through hole 52 to complete the installation of the rotor.

[0078] The present application also provides a motor, which includes any one of the rotors described above.

[0079] It should be noted that in the embodiment of the present application, the specific structure of the rotor is the same as the structure of the rotor in the above embodiments, and its beneficial effects are similar, which will not be described in detail here. In the embodiment of the present application, the coil filling rate of the motor is increased by the detachable rotor, and the power density of the motor is increased.

[0080] The present application also provides a vehicle, which includes the motor described above.

[0081] In the embodiment of the present application, by increasing the coil filling rate of the vehicle motor, the motor power density is increased, so that the vehicle user has a better user experience.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rotor, characterized in that: The rotor comprises: Rotor body; The rotor assembly comprises a plurality of core teeth, wherein the plurality of core teeth are distributed along the circumference of the rotor body, the core teeth are detachably connected to the rotor body, and the core teeth are suitable for winding coils.

2. The rotor according to claim 1, characterized in that The rotor further comprises a plurality of first mounting structures, wherein the first mounting structures comprise a first portion and a second portion that cooperate with each other, wherein the first portions of the plurality of first mounting structures are arranged on the rotor body and distributed along the circumference of the rotor body, and the second portions of the plurality of first mounting structures are arranged on the core teeth in a one-to-one correspondence; The first portion is one of a protrusion and a groove; the second portion is the other of the protrusion and the groove.

3. The rotor according to claim 2, characterized in that The first part is a protrusion, and the second part is a groove. The protrusion cooperates with the groove so that the plurality of core teeth are connected to the rotor body.

4. The rotor according to claim 3, characterized in that A plurality of second mounting structures are also provided on the rotor body, and a plurality of the core teeth are mounted in the second mounting structures in a one-to-one correspondence.

5. The rotor according to claim 4, characterized in that The second mounting structure is a card slot.

6. The rotor according to claim 5, characterized in that The first portion of the first mounting structure is located between two side walls of the slot.

7. The rotor according to claim 6, characterized in that The rotor further comprises a limiting mechanism, wherein the limiting structure is arranged on the first mounting structure and comprises a convex head and a concave portion.

8. The rotor according to claim 7, characterized in that The first part is provided with the convex head, and the second part is provided with the concave part.

9. The rotor according to claim 8, characterized in that A plurality of the rotor assemblies are provided, and the plurality of rotor assemblies are stacked along the axial direction of the rotor body to form a rotor stack.

10. The rotor according to claim 9, characterized in that The rotor further comprises a fixing protection device, wherein the fixing protection device is connected and fixed to the rotor lamination.

11. The rotor according to claim 10, characterized in that The fixing protection device comprises two end covers, and the two end covers are connected to two ends of the rotor lamination along the axial direction of the rotor body.

12. The rotor according to claim 11, characterized in that The core tooth is further provided with a first through hole penetrating the core tooth along the axial direction of the rotor body; the end cover is provided with a second through hole at a position corresponding to the first through hole; The rotor further includes a fastener, which is inserted through the second through hole and the first through hole corresponding thereto to connect the rotor lamination and the two end covers.

13. The rotor according to claim 11, characterized in that The fixing protection device further comprises a protection shell, which is circumferentially wound around the outer surfaces of the rotor lamination and the end cover.

14. The rotor according to claim 1, characterized in that The rotor further includes a rotating shaft, and the rotor body is further provided with a mounting hole, and the rotating shaft is connected to the mounting hole.

15. A motor, characterized in that: The electric motor comprises the rotor according to any one of claims 1 to 14.

16. A vehicle, characterized in that: The vehicle comprises the electric machine as claimed in claim 15 .

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