Axial flux motor

Abstract

The embodiment of the utility model discloses an axial flux motor. The axial flux motor comprises a shell, a positioning piece, a stator and a rotor, the stator is arranged on one side of the rotor, and the stator and the rotor are coaxially arranged; wherein the stator comprises a stator yoke, stator teeth and a printed circuit board winding; the printed circuit board winding is fixed on the stator yoke through the stator teeth; a first casing surface of the casing abutting against the stator yoke is provided with a casing groove. A stator yoke groove is formed in the periphery of the stator yoke; the stator yoke groove is matched with the casing groove to form a positioning hole matched with the positioning piece; and the stator yoke is connected with the positioning holes through the positioning pieces so as to be fixed on the casing. The stator yoke groove is arranged on the periphery of the stator yoke, the casing groove is arranged on the first casing surface abutted against the stator yoke, so that the positioning hole is formed, the stator yoke is connected with the positioning hole through the positioning piece to be fixed on the casing, the stator is prevented from rotating, and the circumferential angle of the printed circuit board winding relative to the casing is fixed. And the working efficiency of the motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an axial flux motor. Background Technology

[0002] In current axial flux motors with a stator-rotor-stator configuration, the stator is prone to rotation during operation, causing the circumferential angle of the printed circuit board windings relative to the housing to be inconsistent, which affects the stability and efficiency of the motor operation. Utility Model Content

[0003] To address the problem of stator rotation in existing stator-rotor-stator configuration axial flux motors, this application provides the following technical solution:

[0004] On the one hand, this application provides an axial flux motor, which includes a housing, a positioning component, a stator, and a rotor; the stator is disposed on one side of the rotor, and the stator and the rotor are coaxially arranged.

[0005] The stator includes a stator yoke, stator teeth, and a printed circuit board winding; the printed circuit board winding is fixed to the stator yoke by the stator teeth;

[0006] A housing groove is formed on the first housing surface of the housing; the first housing surface abuts against the stator yoke;

[0007] A stator yoke groove is provided on the periphery of the stator yoke; the stator yoke groove is arranged opposite to the housing groove to form the positioning hole that matches the positioning member;

[0008] The stator yoke is fixed to the housing by connecting the positioning hole through the positioning member.

[0009] In some exemplary embodiments, the groove opening diameter of the housing groove is the same as the groove opening diameter of the stator yoke groove.

[0010] In some exemplary embodiments, a plurality of housing grooves are spaced apart on the first housing surface of the housing, and a plurality of stator yoke grooves corresponding one-to-one with the plurality of housing grooves are formed on the periphery of the stator yoke.

[0011] In some exemplary embodiments, the multiple housing recesses may have the same or different shapes; the multiple stator yoke recesses may have the same or different shapes.

[0012] In some exemplary embodiments, the axial flux motor includes two stators, which are respectively disposed on both sides of the rotor and are symmetrically arranged relative to the rotor.

[0013] In some exemplary embodiments, the positioning element is cylindrical and detachably connected to the positioning hole.

[0014] In some exemplary embodiments, a first stator tooth hole is provided on the periphery of the stator yoke; the first stator tooth hole is matched and connected to the stator yoke connecting end of the stator tooth.

[0015] In some exemplary embodiments, the first stator tooth hole is connected to the stator yoke connection end by adhesive bonding.

[0016] In some exemplary embodiments, the printed circuit board winding is provided with a second stator tooth hole; the second stator tooth hole is matched and connected to the printed circuit board winding connection end of the stator tooth; the printed circuit board winding connection end is disposed opposite to the stator yoke connection end; the printed circuit board winding is fixed on the stator yoke by connecting the second stator tooth hole and the first stator tooth hole through the stator tooth.

[0017] In some exemplary embodiments, a fan-shaped baffle is provided on the winding connection end of the printed circuit board; the fan-shaped baffle is perpendicular to the winding connection end of the printed circuit board; the fan-shaped baffle abuts against the first side of the printed circuit board winding; the inner side of the stator yoke abuts against the second side of the printed circuit board winding; the first side and the second side are arranged opposite to each other.

[0018] By adopting the above technical solution, the axial flux motor provided in this application has the following beneficial effects:

[0019] This utility model provides an axial flux motor, including a housing, a positioning component, a stator, and a rotor. The stator is disposed on one side of the rotor and is coaxial with the rotor. The stator includes a stator yoke, stator teeth, and a printed circuit board winding. The printed circuit board winding is fixed to the stator yoke by the stator teeth. A housing groove is formed on the first housing surface that abuts against the stator yoke. A stator yoke groove is formed on the periphery of the stator yoke. The stator yoke groove matches the housing groove to form a positioning hole that matches the positioning component. The stator yoke is fixed to the housing by the positioning component connecting to the positioning hole. By providing a stator yoke groove on the periphery of the stator yoke and a housing groove on the first housing surface that abuts against the stator yoke, positioning holes are formed. The stator yoke is fixed to the housing by the positioning component connecting to the positioning hole, thus fixing the stator and preventing it from rotating during operation. This also fixes the circumferential angle of the printed circuit board winding relative to the housing, thereby improving the stability and efficiency of the axial flux motor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of an axial flux motor provided in an embodiment of this application;

[0022] Figure 2 A partial cross-sectional view of an axial flux motor provided in an embodiment of this application;

[0023] Figure 3 A schematic diagram of the housing provided in an embodiment of this application;

[0024] Figure 4 A schematic diagram of the housing, positioning element, and stator yoke provided in the embodiments of this application.

[0025] Figure 5 This is a schematic diagram of the stator teeth, printed circuit board windings, and stator yoke provided in an embodiment of this application.

[0026] The following is supplementary explanation of the attached figures:

[0027] 1-Housing; 10-First housing surface; 11-Housing groove; 2-Positioning component; 3-Stator; 31-Stator yoke; 311-Stator yoke groove; 312-First stator tooth hole; 313-Inner side surface; 32-Stator tooth; 321-Stator yoke connection end; 322-Printed circuit board winding connection end; 323-Fan-shaped baffle; 33-Printed circuit board winding; 331-Second stator tooth hole; 332-First side surface; 333-Second side surface; 4-Rotor; 5-Positioning hole. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0030] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are included. For example, a specified range from “1 to 10” should be considered to include any and all subranges between the minimum value 1 and the maximum value 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0031] This application provides an axial flux motor; please refer to [link / reference]. Figure 1 and Figure 2 It includes a housing 1, a positioning component 2, a stator 3 and a rotor 4. The stator 3 is located on one side of the rotor 4 and is coaxial with the rotor 4.

[0032] The stator 3 includes a stator yoke 31, stator teeth 32, and a printed circuit board winding 33; the printed circuit board winding 33 is fixed to the stator yoke 31 by the stator teeth 32.

[0033] A housing groove 11 is formed on the first housing surface 10 of the housing 1; the first housing surface 10 abuts against the stator yoke 31.

[0034] A stator yoke groove 311 is provided on the periphery of the stator yoke 31; the stator yoke groove 311 is arranged opposite to the housing groove 11 to form a positioning hole 5 that matches the positioning member 2.

[0035] For details, please refer to Figure 2-4 The opening direction of the housing groove 11 on the first housing surface 10 faces the stator yoke 31. A stator yoke groove 311 is provided on the periphery of the stator yoke 31. The stator yoke groove 311 is arranged opposite to the housing groove 11, that is, the opening direction of the stator yoke groove 311 faces the opposite housing groove 11, so as to form a positioning hole 5 that matches the positioning member 2.

[0036] The stator yoke 31 is fixed to the housing 1 by connecting the positioning hole 5 through the positioning element 2.

[0037] For details, please refer to Figure 4 The opening of the stator yoke groove 311 needs to be aligned with the opening of the housing groove 11. The stator yoke groove 311 and the housing groove 11 together form the positioning hole 5, and the positioning hole 5 matches the positioning member 2. Thus, the stator yoke 31 is fixed to the housing 1 by connecting the positioning hole 5 through the positioning member 2, so as to prevent the stator yoke 31 from rotating when the axial flux motor is working. This fixes the circumferential angle of the printed circuit board winding 33 relative to the housing 1, thereby improving the stability and efficiency of the axial flux motor.

[0038] In this embodiment, the opening diameter of the housing groove 11 is the same as the opening diameter of the stator yoke groove 311. In specific implementations, the opening diameter of the housing groove 11 and the opening diameter of the stator yoke groove 311 can be the same or different. For an example, please refer to [link to relevant documentation]. Figure 4 By setting the opening diameter of the housing groove 11 to be the same as the opening diameter of the stator yoke groove 311, the housing groove 11 and the stator yoke groove 311 are precisely matched, forming the positioning hole 5, making positioning simple and convenient when installing the stator yoke 31.

[0039] In this embodiment, a plurality of housing grooves 11 are spaced apart on the first housing surface 10 of the housing 1, and a plurality of stator yoke grooves 311 corresponding to the plurality of housing grooves 11 are formed on the periphery of the stator yoke 31. For example, by spaced apart two housing grooves 11 on the first housing surface 10 of the housing 1, and two stator yoke grooves 311 corresponding to the two housing grooves 11 are formed on the periphery of the stator yoke 31, the fixing effect is enhanced.

[0040] In this embodiment, the shapes of the multiple housing grooves 11 are the same or different; the shapes of the multiple stator yoke grooves 311 are the same or different. For example, by providing two housing grooves 11, one of which has a semi-circular side view and the other has a triangular side view, and two stator yoke grooves 311, one of which has a semi-circular side view and the other has a triangular side view, and the position of the housing groove 11 with a semi-circular side view corresponds to the position of the stator yoke groove 311 with a semi-circular side view, and the position of the housing groove 11 with a triangular side view corresponds to the position of the stator yoke groove 311 with a triangular side view, distinguishing the shapes of the side views facilitates the positioning of the stator yoke 31 during installation and enhances the fixing effect.

[0041] In this embodiment, the axial flux motor includes two stators 3, which are respectively disposed on both sides of the rotor 4, and are symmetrically arranged with respect to the rotor 4. In a specific implementation, the housing grooves 11 on both sides of the housing 1 are symmetrically arranged, and the stator yoke grooves 311 that match the housing grooves 11 are also symmetrically arranged. For an example, please refer to [reference needed]. Figure 1 Two stators 3 are configured in the axial flux motor, with each stator 3 positioned symmetrically on both sides of the rotor 4. The stator yoke grooves 311 on the two stator yokes 31 are symmetrically arranged, ensuring that the positioning holes 5 on both sides are symmetrical with respect to the axis of symmetry of the housing 1. This fixes the circumferential angle of the printed circuit board windings 33 relative to the housing 1, guaranteeing that the circumferential angles of the printed circuit board windings 33 on both sides are consistent. This increases the magnetic flux and linkage, improving the motor's efficiency and stability. Furthermore, the symmetry of the housing grooves 11 on both sides of the housing 1 can be used to directly determine whether the circumferential angles of the printed circuit board windings 33 on both sides are consistent.

[0042] In this embodiment, the positioning element 2 is cylindrical and detachably connected to the positioning hole 5. In specific implementations, the shape of the positioning element 2 can be cylindrical, prismatic, or conical, and its shape must match the positioning hole 5. For an example, please refer to... Figure 4 By setting the positioning component 2 to be cylindrical and the positioning hole 5 to be a cylinder of the same size, the structure is simple, the load-bearing capacity is strong, and the production and processing cost is low.

[0043] In this embodiment, the stator yoke 31 has a first stator tooth hole 312 on its periphery; the first stator tooth hole 312 is matched and connected to the stator yoke connecting end 321 of the stator tooth 32. Specifically, the stator yoke 31 may have one or more first stator tooth holes 312 on its periphery. These multiple first stator tooth holes 312 may be evenly distributed or unevenly distributed; for example, please refer to [reference needed]. Figure 5 Nine evenly distributed first stator tooth holes 312 are provided on the periphery of the stator yoke 31; these nine first stator tooth holes 312 are matched and connected with the stator yoke connection ends 321 of the nine stator teeth 32, which helps to maintain the parallelism between the printed circuit board winding 33 and the stator yoke 31, and also improves the fixing effect.

[0044] In this embodiment, the first stator tooth hole 312 and the stator yoke connection end 321 are connected by adhesive bonding. For example, connecting the first stator tooth hole 312 and the stator yoke connection end 321 by adhesive bonding is not only simple and convenient to operate, but also improves the stability of the motor operation.

[0045] In this embodiment, the printed circuit board winding 33 is provided with a second stator tooth hole 331; the second stator tooth hole 331 is matched and connected to the printed circuit board winding connection end 322 of the stator tooth 32; the printed circuit board winding connection end 322 and the stator yoke connection end 321 are arranged opposite to each other; the printed circuit board winding 33 is fixed on the stator yoke 31 by connecting the second stator tooth hole 331 and the first stator tooth hole 312 through the stator tooth 32. For example, please refer to [reference needed]. Figure 5 Nine evenly distributed second stator tooth holes 331 are provided on the periphery of the printed circuit board winding 33; and the positions of the nine second stator tooth holes 331 correspond one-to-one with the nine first stator tooth holes 312. The nine second stator tooth holes 331 are matched and connected to the printed circuit board winding connection end 322 of the stator tooth 32; the printed circuit board winding connection end 322 and the stator yoke connection end 321 are arranged opposite to each other; the printed circuit board winding 33 is fixed on the stator yoke 31 by connecting the second stator tooth holes 331 and the first stator tooth holes 312 through the stator tooth 32, so that the printed circuit board winding 33 is firmly fixed on the stator yoke 31. The shape of the stator tooth 32 is consistent with the shape and size of the second stator tooth holes 331 and the first stator tooth holes 312. The printed circuit board winding 33 and the stator yoke 31 are assembled onto the stator tooth 32 by press fitting, which is simple to operate and the tooth hole fit can achieve precise positioning.

[0046] In this embodiment, a fan-shaped baffle 323 is provided on the printed circuit board winding connection end 322; the fan-shaped baffle 323 is perpendicular to the printed circuit board winding connection end 322; the fan-shaped baffle 323 abuts against the first side surface 332 of the printed circuit board winding 33; the inner side surface 313 of the stator yoke 31 abuts against the second side surface 333 of the printed circuit board winding 33; the first side surface 332 and the second side surface 333 are opposite to each other. For an example, please refer to [reference needed]. Figure 5By providing fan-shaped baffles 323 on the printed circuit board winding connection ends 322 of each of the nine stator teeth 32, the fan-shaped baffles 323 are arranged perpendicularly to the printed circuit board winding connection ends 322, and the fan-shaped baffles 323 abut against the first side 332 of the printed circuit board winding 33. The inner side 313 of the stator yoke 31 abuts against the second side 333 of the printed circuit board winding 33. The first side 332 and the second side 333 are arranged opposite to each other, which is beneficial to fixing the printed circuit board winding 33 and maintaining the stability of the motor operation.

[0047] To facilitate understanding of the technical solutions in the embodiments of this application, the following is combined with... Figure 1-5 The assembly of a stator-rotor-stator configuration axial flux motor according to embodiments of this application will be described. First, the stator-rotor-stator configuration axial flux motor includes two stators 3. The two stators 3 are assembled in the same way: nine evenly distributed second stator tooth holes 331 are provided on the periphery of the printed circuit board winding 33; nine first stator tooth holes 312 are provided on the stator yoke 31, which correspond one-to-one with the positions of the nine second stator tooth holes 331. After aligning the nine second stator tooth holes 331 with the nine first stator tooth holes 312, the printed circuit board winding 33 is fixed on the stator yoke 31 by connecting the second stator tooth holes 331 and the first stator tooth holes 312 through stator teeth 32. The fan-shaped baffle 323 provided on the connecting end 322 of the printed circuit board winding abuts against the first side 332 of the printed circuit board winding 33. The printed circuit board winding 33 and the stator yoke 31 are both assembled onto the stator teeth 32 by press fitting to obtain the assembled stator 3. The assembled stator 3 is connected and fixed to the housing 1. Taking the fixing of one stator 3 as an example: the stator yoke groove 311 on the periphery of the stator yoke 31 is aligned with the housing groove 11 on the first housing surface 10 that matches the stator yoke groove 311, forming a positioning hole 5 that matches the positioning component 2. The stator yoke 31 is fixed to the housing 1 by connecting the positioning hole 5 through the positioning component 2, that is, the stator 3 is connected and fixed to the housing 1. Then, the assembled stator 3 is fixed to the other side of the housing 1 in the same way as above. The two stators 3 are symmetrically arranged and the positioning holes 5 on both sides are symmetrically arranged with respect to the axis of symmetry of the housing 1. Since the circumferential angle of the printed circuit board winding 33 relative to the housing 1 is fixed, the circumferential angle of the printed circuit board winding 33 on both sides is ensured to be consistent, thereby increasing the magnetic flux and magnetic linkage of the magnetic field and improving the working efficiency and stability of the stator-rotor-stator configuration axial flux motor.

[0048] This application discloses an axial flux motor, which includes a housing, a positioning element, a stator, and a rotor. The stator is disposed on one side of the rotor and is coaxial with the rotor. The stator includes a stator yoke, stator teeth, and a printed circuit board winding. The printed circuit board winding is fixed to the stator yoke by the stator teeth. A housing groove is formed on the first housing surface of the housing, which abuts against the stator yoke. A stator yoke groove is formed on the periphery of the stator yoke, which is adapted to the housing groove to form a positioning hole that matches the positioning element. The stator yoke is fixed to the housing by the positioning element connecting to the positioning hole. By providing a stator yoke groove on the periphery of the stator yoke and a housing groove on the first housing surface abutting against the stator yoke, a positioning hole is formed. The stator yoke is fixed to the housing by the positioning element connecting to the positioning hole, thereby achieving the function of fixing the stator, preventing the stator from rotating, and thus fixing the circumferential angle of the printed circuit board winding relative to the housing, thereby improving the stability and efficiency of the axial flux motor.

[0049] The above description is only an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An axial flux electric machine, characterized by, The axial flux motor comprises a casing (1), a positioning member (2), a stator (3) and a rotor (4); the stator (3) is arranged on one side of the rotor (4), and the stator (3) is coaxially arranged with the rotor (4); The stator (3) comprises a stator yoke (31), a stator tooth (32) and a printed circuit board winding (33); the printed circuit board winding (33) is fixed on the stator yoke (31) through the stator tooth (32); A casing groove (11) is formed on a first casing surface (10) of the casing (1); the first casing surface (10) is in abutment with the stator yoke (31); A stator yoke groove (311) is formed on the periphery of the stator yoke (31); the stator yoke groove (311) is oppositely arranged with the casing groove (11) to form a positioning hole (5) matched with the positioning member (2); The stator yoke (31) is fixed on the casing (1) by connecting the positioning hole (5) through the positioning member (2).

2. An axial flux machine according to claim 1, wherein, The groove opening diameter of the casing groove (11) is the same as the groove opening diameter of the stator yoke groove (311).

3. An axial flux machine according to claim 1 or 2, wherein, A plurality of casing grooves (11) are formed on the first casing surface (10) of the casing (1) at intervals; a plurality of stator yoke grooves (311) corresponding to the plurality of casing grooves (11) are formed on the periphery of the stator yoke (31).

4. An axial flux machine according to claim 3, wherein, The shapes of the plurality of casing grooves (11) are the same or different; the shapes of the plurality of stator yoke grooves (311) are the same or different.

5. An axial flux machine as claimed in claim 1, wherein, The axial flux motor comprises two stators (3); the two stators (3) are arranged on both sides of the rotor (4), and the two stators (3) are symmetrically arranged relative to the rotor (4).

6. An axial flux machine as claimed in claim 1, wherein, The positioning member (2) is in the shape of a cylinder and is detachably connected with the positioning hole (5).

7. An axial flux machine as claimed in claim 1, wherein, A first stator tooth hole (312) is formed on the periphery of the stator yoke (31); the first stator tooth hole (312) is matched and connected with a stator yoke connecting end (321) of the stator tooth (32).

8. An axial flux machine according to claim 7, wherein, The first stator tooth hole (312) and the stator yoke connecting end (321) are connected in an adhesive manner.

9. An axial flux machine as claimed in claim 7, wherein, A second stator tooth hole (331) is formed on the printed circuit board winding (33); the second stator tooth hole (331) is matched and connected with a printed circuit board winding connecting end (322) of the stator tooth (32); the printed circuit board winding connecting end (322) is oppositely arranged with the stator yoke connecting end (321); the printed circuit board winding (33) is fixed on the stator yoke (31) by connecting the second stator tooth hole (331) and the first stator tooth hole (312) through the stator tooth (32).

10. An axial flux machine according to claim 9, wherein, The printed circuit board winding connection end (322) is provided with a sector baffle (323); the sector baffle (323) is vertically arranged with the printed circuit board winding connection end (322); the sector baffle (323) is in abutment with the first side surface (332) of the printed circuit board winding (33); the inner side surface (313) of the stator yoke (31) is in abutment with the second side surface (333) of the printed circuit board winding (33); and the first side surface (332) and the second side surface (333) are oppositely arranged.

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