A stator assembly of an axial flux motor and an axial flux motor

Abstract

The utility model discloses a kind of stator assemblies of axial flux motor, including stator core and insulation framework, stator core includes annular yoke part and the tooth part of several from annular yoke part The top surface is protruded axially, each tooth part is evenly distributed in circumferential interval, form embedded wire slot between adjacent two tooth parts, the top of tooth part two sides is formed tooth part baffle and extends horizontally, its the insulation framework includes outer slot insulation and inner slot insulation, outer slot insulation is covered in stator core outer and covers the outer wall surface of each tooth part and annular yoke part, the top of inner slot insulation covers the top surface of annular yoke part, the inner wall surface and two side wall surface of each tooth part are surrounded in the middle part of inner slot insulation, the bottom of inner slot insulation covers the tooth part baffle, the top of inner slot insulation two sides is formed two insulation flanges and extends axially, insulation flange covers the side wall of tooth part baffle. Insulation flange protects tooth part baffle, eliminates the risk of creeping electrically;Integral outer slot insulation reduces the number of parts, optimizes installation difficulty, reduces production cost.

Description

Technical Field

[0001] This utility model relates to a stator assembly of an axial flux motor and the axial flux motor itself. Background Technology

[0002] The stator assembly of an existing axial flux motor includes a stator core and an insulating frame. The stator core includes an annular yoke and several teeth protruding axially from the top surface of the annular yoke. The teeth are evenly spaced circumferentially, and a slot is formed between adjacent teeth. The top sides of the teeth extend laterally to form tooth baffles. The insulating frame includes several T-shaped outer slot insulations and several U-shaped inner slot insulations. Each U-shaped inner slot insulation is fitted onto the teeth from inside the core, with the teeth as a reference. Each T-shaped outer slot insulation is inserted into the core slot with the slot as a reference. The ends of the T-shaped outer slot insulations extend into both sides of the teeth. The ends of the T-shaped outer slot insulations have outer stops, and the U-shaped inner slot insulations have inner stops. The outer stops and inner stops are interlocked. However, this type of stator assembly has the following disadvantages: 1. The tooth baffles of the stator core have no insulation protection on both sides, which poses a risk of creepage (i.e., leakage risk caused by too small creepage distance); 2. There are too many mounting parts (an average of two mounting parts per tooth), which makes assembly inconvenient; 3. The T-shaped outer insulation frame needs to be pried open to widen the angle before it can be installed into the core, which is inconvenient to operate. Utility Model Content

[0003] This utility model provides a stator assembly and an axial flux motor to solve the technical problem of creepage risk on both sides of the tooth baffle of the stator core in the stator assembly of the axial flux motor in the prior art.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The first objective of this invention is to provide a stator assembly for an axial flux motor, comprising a stator core and an insulating frame. The stator core includes an annular yoke and a plurality of teeth protruding axially from the top surface of the annular yoke. The teeth are evenly spaced circumferentially, and a slot is formed between adjacent teeth. The top sides of the teeth extend laterally to form tooth baffles. The insulating frame comprises an outer slot insulation and an inner slot insulation. The outer slot insulation is sleeved on the stator core and covers the outer wall surfaces of each tooth and the annular yoke. The bottom of the inner slot insulation covers the top surface of the annular yoke. The middle part of the inner slot insulation surrounds the inner wall surface and the side walls of each tooth. The top of the inner slot insulation covers the bottom surface of the tooth baffles. The top sides of the inner slot insulation extend axially to form two insulating protrusions, which cover the side walls of the tooth baffles.

[0006] The aforementioned inner groove insulation has inner buckle strips protruding inward on both sides of the teeth, and the outer groove insulation has outer buckle strips corresponding to the inner buckle strips. The inner buckle strips and outer buckle strips are fastened together.

[0007] The aforementioned inner groove insulation includes an insulating side plate surrounding the inner wall surface and two side walls of the tooth section. The inner buckle is set at the end of the insulating side plate. The top of the insulating side plate is connected to two insulating top plates and an inner insulating upturned edge. The insulating top plates cover the bottom surface of the tooth section baffle, and the inner insulating upturned edge covers the inner wall of the tooth section baffle. The bottom of the insulating side plate is connected to an insulating bottom plate, and the insulating bottom plate covers the top surface of the annular yoke.

[0008] The aforementioned inner groove insulation is composed of several toothed insulation sections, each toothed insulation section surrounding one tooth, and the insulating base plates of two adjacent toothed insulation sections are joined together.

[0009] The aforementioned insulating base plates of two adjacent toothed insulations are spliced ​​together. Specifically, each toothed insulation base plate has an upper edge on the left side and a lower edge on the right side, with the upper edge of the toothed insulation overlapping the lower edge of the adjacent toothed insulation.

[0010] The aforementioned outer groove insulation includes several tooth outer insulation plates covering the outer side of the tooth section. The top of the tooth outer insulation plate is connected to an outer insulation upturned edge, which covers the outer wall of the tooth baffle. The bottom of each tooth outer insulation plate is connected to an insulating sleeve, which surrounds the outer side of the annular yoke. The outer buckle is provided on both sides of the tooth outer insulation plate.

[0011] The top of the aforementioned insulating sleeve extends outward with an upper annular insulating baffle, and the bottom of the insulating sleeve extends outward with a lower annular insulating baffle.

[0012] The outer edge of the aforementioned upper annular insulating baffle is provided with a marking groove below the outer insulating plate of each tooth.

[0013] The second objective of this utility model is to provide an axial flux motor, including a stator assembly of the axial flux motor, characterized in that: the stator assembly of the axial flux motor is the stator assembly of the axial flux motor described above.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. The stator assembly of the axial flux motor includes a stator core and an insulating frame. The stator core includes an annular yoke and several teeth protruding axially from the top surface of the annular yoke. The teeth are evenly spaced circumferentially, and a slot is formed between adjacent teeth. Tooth baffles extend laterally from the top two sides of the teeth. The insulating frame includes an outer slot insulation and an inner slot insulation. The outer slot insulation is fitted over the stator core and covers the outer walls of each tooth and the annular yoke. The bottom of the inner slot insulation covers the top surface of the annular yoke, the middle of the inner slot insulation surrounds the inner wall and side walls of each tooth, and the top of the inner slot insulation covers the bottom surface of the tooth baffles. Two insulating protrusions extend axially from the top two sides of the inner slot insulation, covering the side walls of the tooth baffles. The insulating protrusions protect the tooth baffles, eliminating the risk of creepage. The integrated outer slot insulation reduces the number of parts, optimizes installation difficulty, and lowers production costs.

[0016] 2. Other advantages of this utility model are described in detail in the embodiments section. Attached Figure Description

[0017] Figure 1 A schematic diagram of the stator assembly of the axial flux motor provided in Embodiment 1 of this utility model;

[0018] Figure 2 This is a side view of the stator assembly of an axial flux motor.

[0019] Figure 3 for Figure 2 Enlarged view of point B;

[0020] Figure 4 for Figure 2 AA section view;

[0021] Figure 5 for Figure 4 Enlarged view of point C;

[0022] Figure 6 This is an exploded view of the stator assembly of an axial flux motor.

[0023] Figure 7 An exploded view of the inner slot insulation in the stator assembly of an axial flux motor;

[0024] Figure 8 This is a schematic diagram of the outer slot insulation structure in the stator assembly of an axial flux motor.

[0025] Figure 9 This is a schematic diagram of the tooth insulation structure in the stator assembly of an axial flux motor. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1:

[0028] like Figures 1 to 9 As shown, this embodiment provides a stator assembly for an axial flux motor, including a stator core 2 and an insulating frame 1. The stator core 2 includes an annular yoke 21 and a plurality of teeth 22 axially protruding from the top surface of the annular yoke 21. The teeth 22 are evenly distributed circumferentially, and a slot 20 is formed between two adjacent teeth 22. The top sides of the teeth 22 extend laterally to form tooth baffles 23. The insulating frame 1 includes an outer slot insulation 11 and an inner slot insulation 12. The outer slot insulation 11 is sleeved on the stator core 2 and covers the outer wall surfaces of each tooth 22 and the annular yoke 21. The bottom of the inner slot insulation 12 covers the top surface of the annular yoke 21. The middle part of the inner slot insulation 12 surrounds the inner wall surface and the side walls of each tooth 22. The top of the inner slot insulation 12 covers the bottom surface of the tooth baffles 23. The top sides of the inner slot insulation 12 extend axially to form two insulating protrusions 121, which cover the side walls of the tooth baffles 23.

[0029] The stator assembly of the axial flux motor has an insulating protrusion 121 that protects the tooth baffle 23, eliminating the risk of creepage; the integrated outer slot insulation 11 reduces the number of parts, optimizes installation difficulty, and reduces production costs.

[0030] The inner groove insulation 12 described above has inner buckle strips 126 protruding inward on both sides of the teeth, and the outer groove insulation 11 has outer buckle strips 111 corresponding to the inner buckle strips 126. The inner buckle strips 126 and outer buckle strips 111 are fastened together. The inner groove insulation 12 and the outer groove insulation 11 are easy to install and have a reliable connection.

[0031] The aforementioned inner groove insulation 12 includes an insulating side plate 124 surrounding the inner wall and two side walls of the toothed portion 22. The inner buckle 126 is disposed at the end of the insulating side plate 124. The top of the insulating side plate 124 is connected to two insulating top plates 122 and an inner insulating upturned edge 123. The insulating top plates 122 cover the bottom surface of the toothed portion baffle 23, and the inner insulating upturned edge 123 covers the inner wall of the toothed portion baffle 23. The bottom of the insulating side plate 124 is connected to an insulating bottom plate 125, which covers the top surface of the annular yoke 21.

[0032] The aforementioned inner groove insulation 12 is composed of several toothed insulations 120, each toothed insulation 120 surrounding a tooth 22, and the insulating base plates 125 of two adjacent toothed insulations 120 are joined together. The toothed insulation 120 has a simple structure and is easy to install.

[0033] The insulating base plates 125 of two adjacent toothed insulators 120 are joined together. Specifically, each toothed insulator 120 has an upper edge 127 on its left side and a lower edge 128 on its right side. The upper edge 127 of the toothed insulator 120 rests on the lower edge 128 of the adjacent toothed insulator 120. The complementary step design between the upper edge 127 and the lower edge 128 eliminates the risk of creepage between the toothed insulators 120, further enhancing the safety of the stator assembly.

[0034] The aforementioned outer groove insulation 11 includes several tooth outer insulation plates 112 covering the outer side of the tooth portion 22. The top of each tooth outer insulation plate 112 is connected to an outer insulation upturned edge 113, which covers the outer wall of the tooth baffle 23. The bottom of each tooth outer insulation plate 112 is connected to an insulating sleeve 114, which surrounds the outer side of the annular yoke portion 21. The outer buckle strip 111 is disposed on both sides of the tooth outer insulation plate 112. The integral outer groove insulation 11 has a simple structure and is easy to install.

[0035] The top of the aforementioned insulating sleeve 114 extends outward with an upper annular insulating baffle 115, and the bottom of the insulating sleeve 114 extends outward with a lower annular insulating baffle 116.

[0036] The outer edge of the aforementioned upper annular insulating baffle 115 is provided with a marking groove 117 below each toothed outer insulating plate.

[0037] Example 2:

[0038] This embodiment provides an axial flux motor, including a stator assembly 9 of the axial flux motor, characterized in that: the stator assembly 9 of the axial flux motor is the stator assembly of the axial flux motor described in Embodiment 1.

[0039] The axial flux motor has improved safety by modifying the structure of the stator assembly 9.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stator assembly of an axial flux motor, comprising a stator core (2) and an insulating frame (1), wherein the stator core (2) comprises an annular yoke (21) and a plurality of teeth (22) axially protruding from the top surface of the annular yoke (21), the teeth (22) being evenly distributed circumferentially, and a slot (20) being formed between two adjacent teeth (22), and tooth baffles (23) extending laterally on both sides of the top of the teeth (22), characterized in that: The insulating frame (1) includes an outer groove insulation (11) and an inner groove insulation (12). The outer groove insulation (11) is sleeved on the outside of the stator core (2) and covers the outer wall surface of each tooth (22) and the annular yoke (21). The bottom of the inner groove insulation (12) covers the top surface of the annular yoke (21). The middle part of the inner groove insulation (12) surrounds the inner wall surface and the side walls of each tooth (22). The top of the inner groove insulation (12) covers the bottom surface of the tooth baffle (23). The top two sides of the inner groove insulation (12) extend axially to form two insulating protrusions (121). The insulating protrusions (121) cover the side walls of the tooth baffle (23).

2. The stator assembly of an axial flux motor according to claim 1, characterized in that: The inner groove insulation (12) has an inner buckle (126) protruding inward on both sides of the tooth, and the outer groove insulation (11) has an outer buckle (111) corresponding to the inner buckle (126). The inner buckle (126) and the outer buckle (111) are fastened together.

3. The stator assembly of an axial flux motor according to claim 2, characterized in that: The inner groove insulation (12) includes an insulating side plate (124) surrounding the inner wall surface and the two side walls of the tooth (22). The inner buckle (126) is provided at the end of the insulating side plate (124). The top of the insulating side plate (124) is connected to two insulating top plates (122) and an inner insulating upturned edge (123). The insulating top plate (122) covers the bottom surface of the tooth baffle (23). The inner insulating upturned edge (123) covers the inner wall of the tooth baffle (23). The bottom of the insulating side plate (124) is connected to an insulating bottom plate (125). The insulating bottom plate (125) covers the top surface of the annular yoke (21).

4. The stator assembly of an axial flux motor according to claim 3, characterized in that: The inner groove insulation (12) is composed of several toothed insulations (120), each toothed insulation (120) surrounds a tooth (22), and the insulating base plates (125) of two adjacent toothed insulations (120) are spliced ​​together.

5. The stator assembly of an axial flux motor according to claim 4, characterized in that: The insulating base plates (125) of the two adjacent toothed insulators (120) are spliced ​​together. Specifically, each toothed insulator (120) has an upper edge (127) on the left side of its insulating base plate (125) and a lower edge (128) on the right side. The upper edge (127) of the toothed insulator (120) rests on the lower edge (128) of the adjacent toothed insulator (120).

6. A stator assembly of an axial flux motor according to any one of claims 2 to 5, characterized in that: The outer groove insulation (11) includes several tooth outer insulation plates (112) covering the outer side of the tooth (22). The top of the tooth outer insulation plate (112) is connected to an outer insulation upturned edge (113). The outer insulation upturned edge (113) covers the outer wall of the tooth baffle (23). The bottom of each tooth outer insulation plate (112) is connected to an insulating sleeve (114). The insulating sleeve (114) surrounds the outer side of the annular yoke (21). The outer buckle (111) is set on both sides of the tooth outer insulation plate (112).

7. The stator assembly of an axial flux motor according to claim 6, characterized in that: The top of the insulating sleeve (114) extends outward with an upper annular insulating baffle (115), and the bottom of the insulating sleeve (114) extends outward with a lower annular insulating baffle (116).

8. The stator assembly of an axial flux motor according to claim 7, characterized in that: The outer edge of the upper annular insulating baffle (115) is provided with a marking groove (117) below each toothed outer insulating plate.

9. An axial flux motor, comprising a stator assembly (9) of an axial flux motor, characterized in that: The stator assembly (9) of the axial flux motor is the stator assembly of the axial flux motor according to any one of claims 1 to 8.

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