An axial flux motor stator provided with a flat wire single phase form wound winding

Abstract

The utility model discloses an axial flux motor stator provided with flat wire single -phase forming winding belongs to motor equipment technical field, and the motor stator includes the core (1), winding (2), insulating component (3) and the insert piece (4), and the core (1) is annular, including the bottom disc (5) and the tooth head (6), is provided with stator slot (7) between the tooth head (6), and winding (2) includes U phase wire winding (8), V phase wire winding (9), W phase wire winding (10) and the center lead (11) of connecting U phase wire winding (8), V phase wire winding (9), W phase wire winding (10), and U phase wire winding (8), V phase wire winding (9) and W phase wire winding (10) are formed by flat wire winding respectively, are set up on the tooth head (6), and the insert piece (4) is set up in the tooth head (6) top, and the utility model can make stator winding (2) welding spot reduction through the improvement of the winding mode of core (1) and winding (2), improves the performance of product.

Description

Technical Field

[0001] This utility model belongs to the field of motor equipment technology, and relates to a stator, specifically to a flat wire single-phase formed winding. Background Technology

[0002] The stator is a basic structure of an electric motor, consisting of an iron core, windings, and other components. In order to improve the efficiency of the stator, new energy motors often use flat wires instead of the original round wires to wind the iron core. Due to the shape limitations of the flat wires, they cannot be wound continuously during the winding process, which is not conducive to the winding and assembly of the stator.

[0003] In the prior art, the invention patent with application number 202423118037.8 and patent title "Invention Patent for Flat Wire Motor Stator and Motor" discloses a flat wire motor stator, which includes a stator core and stator flat wire windings. The stator core is annular with multiple winding slots opened along its circumference on the inner wall. The output structure of each phase flat wire winding in the three-phase flat wire winding is as follows: the phase output end and the phase lead end of each branch are arranged in the same row of tortuous legs radially on the stator core. Each phase of the flat wire winding corresponds to any two adjacent nth and (n+1th)th layers in the same winding slot, where n and (n+1) range from 1 to 2N. Around the stator core, the phase lead-out terminals of each branch correspond to multiple winding slots arranged continuously in the nth layer, and the phase lead-out terminals of each branch correspond to multiple winding slots arranged continuously in the (n+1th)th layer. Each phase of the flat wire winding has two parallel, symmetrically wound first and second branches, with winding methods including U-shaped conductors with different pitches. The flat wire motor stator has its lead-out terminals concentrated in a small area, not occupying stator inner diameter space, which is beneficial for stator installation.

[0004] This patent uses a structure with multiple flat wire windings, resulting in too many wire outlets. The connections between the flat wires require welding, and too many welding points can easily lead to cracking and other issues, affecting product quality. Utility Model Content

[0005] The purpose of this invention is to overcome the technical problems in the prior art, such as the excessive number of welding points caused by welding multiple flat wire outlets, which can easily lead to weld point detachment and affect product quality, and to provide a stator with a flat wire single-phase formed winding.

[0006] To address the aforementioned problems, this utility model provides an axial flux motor stator equipped with flat wire single-phase molded windings. The motor stator includes an iron core, windings, insulation components, and inserts. The iron core is annular and includes a base and teeth. The teeth are vertically mounted on the base, and stator slots are provided between the teeth. The windings include U-phase windings, V-phase windings, W-phase windings, and a center lead connecting the U-phase windings, V-phase windings, and W-phase windings. The U-phase windings, V-phase windings, and W-phase windings are each formed by winding flat wire and mounted on the teeth.

[0007] The U-phase winding includes a U-phase lead wire, a U-phase winding section, and a U-phase connection section; the V-phase winding includes a V-phase lead wire, a V-phase winding section, and a V-phase connection section; and the W-phase winding includes a W-phase lead wire, a W-phase winding section, and a W-phase connection section.

[0008] The U-phase wire winding section includes a forward U-phase wire winding section and a reverse U-phase wire winding section, which are alternately arranged. Adjacent forward U-phase wire winding sections and reverse U-phase wire winding sections are connected by a U-phase wire connecting section. The V-phase wire winding section includes a forward V-phase wire winding section and a reverse V-phase wire winding section, which are alternately arranged. Adjacent forward V-phase wire winding sections and reverse V-phase wire winding sections are connected by a V-phase wire connecting section.

[0009] The W-phase winding section includes a forward W-phase winding section and a reverse W-phase winding section, which are alternately arranged. Adjacent forward W-phase winding sections and reverse W-phase winding sections are connected by a W-phase connecting section. The U-phase winding section, V-phase winding section and W-phase winding section are alternately arranged in a cycle. The number of inserts is the same as that of the tooth head and is located on the top of the tooth head.

[0010] By setting teeth on the iron core, the original vertical stator slots are optimized into horizontal stator slots, and the winding method is optimized into horizontal spiral winding. The U-phase winding, V-phase winding, and W-phase winding are connected by U-phase wire connection parts, V-phase winding parts, and W-phase winding parts. The U-phase winding, V-phase winding, and W-phase winding are all composed of a single flat wire. This winding structure significantly reduces the number of welding points in the winding, preventing problems such as breakage due to excessive welding points, and improving product performance.

[0011] As a further improvement of this utility model, the above-mentioned axial flux motor stator with flat wire single-phase formed windings has the following configuration: the forward U-phase winding, forward V-phase winding, and forward W-phase winding are formed by flat wire winding clockwise from bottom to top, while the reverse U-phase winding, reverse V-phase winding, and reverse W-phase winding are formed by flat wire winding counterclockwise from top to bottom. This configuration enables the U-phase winding, V-phase winding, and W-phase winding to be formed by winding a single flat wire, significantly reducing the number of solder joints.

[0012] As a further improvement of this utility model, the U-phase lead wire is connected to the bottom end of the positive U-phase winding part, the V-phase lead wire is connected to the bottom end of the positive V-phase winding part, and the W-phase lead wire is connected to the bottom end of the positive W-phase winding part.

[0013] As a further improvement of this utility model, the above-mentioned axial flux motor stator with flat wire single-phase molded winding also includes an injection molding layer, which includes tooth sidewalls, stator slot walls and chassis walls. The injection molding layer is consistent with the outer structure of the iron core and is sleeved on the outside of the iron core.

[0014] As a further improvement of this utility model, the above-mentioned axial flux motor stator with flat wire single-phase formed winding has an insulation component including interphase insulating sheets and insulating paper. The interphase insulating sheets are disposed on the side adjacent to the U-phase winding portion and the V-phase winding portion, or the V-phase winding portion and the W-phase winding portion, or the W-phase winding portion and the U-phase winding portion. The insulating paper has a rectangular cross-section, and the side adjacent to the U-phase winding portion, the V-phase winding portion, and the W-phase winding portion is disposed inside the insulating paper.

[0015] As a further improvement of this utility model, the above-mentioned axial flux motor stator with flat wire single-phase formed winding has fan-shaped inserts, which are spliced ​​together to form an overall ring shape.

[0016] As a further improvement of this utility model, the above-mentioned axial flux motor stator with flat wire single-phase molded winding has a slot at the top of the tooth head, a corresponding slot opening on the side wall of the injection-molded tooth head, and a plug at the bottom of the insert plate, with the plug set inside the slot.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By optimizing the core structure and setting the tooth head to optimize the winding structure of the winding, the original multi-welding point winding method of flat wire is improved into continuous winding, reducing the welding points of the stator winding and improving the performance of the product; 2. Setting insulating paper and interphase insulating sheets improves the insulation of the stator. Attached Figure Description

[0018] Figure 1 This is a front view of an axial flux motor stator with flat wire single-phase molded windings according to this utility model.

[0019] Figure 2 yes Figure 1 Sectional view along the AA direction.

[0020] Figure 3 This is a perspective view of an axial flux motor stator with flat wire single-phase molded windings according to the present invention.

[0021] Figure 4 This is a front view of the winding of this utility model.

[0022] Figure 5 This is a bottom view of the winding of this utility model.

[0023] Figure 6This is a perspective view of the winding of this utility model.

[0024] Figure 7 This is a three-dimensional view of the U-phase winding of this utility model.

[0025] Figure 8 This is a perspective view of the V-phase winding of this utility model.

[0026] Figure 9 This is a perspective view of the W-phase winding of this utility model.

[0027] Figure 10 This is the front view of the iron core of this utility model.

[0028] Figure 11 This is a three-dimensional view of the iron core of this utility model.

[0029] Figure 12 This is a perspective view of the insulating layer of this utility model.

[0030] Figure 13 This is a three-dimensional view of the winding and core assembly of this utility model.

[0031] Explanation of reference numerals: 1. Iron core; 2. Winding; 3. Insulation assembly; 4. Latch; 5. Chassis; 6. Tooth; 7. Stator slot; 8. U-phase winding; 81. U-phase lead; 82. U-phase winding section; 821. Forward U-phase winding section; 822. Reverse U-phase winding section; 83. U-phase connection section; 9. V-phase winding; 91. V-phase lead; 92. V-phase winding section; 921. Forward V-phase winding section; 922. Reverse V-phase winding section. 93. V-phase winding section; 10. W-phase winding; 101. W-phase lead wire; 102. W-phase winding section; 1021. Forward W-phase winding section; 1022. Reverse W-phase winding section; 103. W-phase connection section; 11. Center lead wire; 12. Injection molding layer; 13. Tooth head sidewall; 14. Stator slot wall; 15. Chassis wall; 16. Insulating paper; 17. Phase-to-phase insulating sheet; 18. Slot; 19. Slot opening; 20. Insert block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Conversely, this utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model as defined in the claims. Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art will fully understand this utility model even without these detailed descriptions.

[0034] like Figure 1-3 , Figure 11 and Figure 13 The stator of an axial flux motor with a flat wire single-phase molded winding 2 is shown. The motor stator includes an iron core 1, a winding 2, an insulation component 3, and a lamination 4. The iron core 1 is annular and includes a base 5 and teeth 6. The teeth 6 are vertically arranged on the base 5, and there are 18 teeth 6. Stator slots 7 are arranged between the teeth 6.

[0035] like Figure 4-10 As shown, winding 2 includes a U-phase winding 82, a V-phase winding 92, a W-phase winding 102, and a center lead 11 connecting the U-phase winding 82, V-phase winding 92, and W-phase winding 102. The U-phase winding 82, V-phase winding 92, and W-phase winding 102 are each formed by winding flat wire and are set on the tooth head 6. The U-phase winding 82, V-phase winding 92, and W-phase winding 102 are all composed of a single flat wire. This winding structure significantly reduces the number of welding points in the winding, preventing problems such as breakage due to excessive welding points and improving the performance of the product.

[0036] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the U-phase winding 82 includes a U-phase lead wire 81, a U-phase winding portion 82, and a U-phase connecting portion 83; the V-phase winding 92 includes a V-phase lead wire 91, a V-phase winding portion 92, and a V-phase connecting portion 93; and the W-phase winding 102 includes a W-phase lead wire 101, a W-phase winding portion 102, and a W-phase connecting portion 103. The U-phase lead wire 81 is connected to the bottom end of the forward U-phase winding portion 821, the V-phase lead wire 91 is connected to the bottom end of the forward V-phase winding portion 921, and the W-phase lead wire 101 is connected to the forward W-phase winding portion 1021.

[0037] like Figure 7 , Figure 8 and Figure 9As shown, the U-phase winding section 82 includes a forward U-phase winding section 821 and a reverse U-phase winding section 822, which are alternately arranged. Adjacent forward U-phase winding sections 821 and reverse U-phase winding sections 822 are connected by a U-phase wire connecting section 83. The V-phase winding section 92 includes a forward V-phase winding section 921 and a reverse V-phase winding section 922, which are intersected. The winding method is improved by alternating the arrangement of adjacent forward V-phase winding portions 921 and reverse V-phase winding portions 922 connected by V-phase wire connecting portions 93. The W-phase winding portion 102 includes forward W-phase winding portions 1021 and reverse W-phase winding portions 1022, which are alternately arranged. Adjacent forward W-phase winding portions 1021 and reverse W-phase winding portions 1022 are connected by W-phase wire connecting portions 103. The U-phase winding portion 82, V-phase winding portion 92, and W-phase winding portion 102 are alternately arranged in a cycle. By improving the winding method, the structure of winding 2 is optimized, and the product performance is improved.

[0038] like Figure 10-11 As shown, the insulation component 3 includes interphase insulating sheets 17 and insulating paper 16. The interphase insulating sheets 17 are disposed on the side adjacent to the U-phase wire winding portion 82 and the V-phase wire winding portion 92, or the V-phase wire winding portion 92 and the W-phase wire winding portion 102, or the W-phase wire winding portion 102 and the U-phase wire winding portion 82. The insulating paper 16 has a rectangular cross-section. The side adjacent to the U-phase wire winding portion 82, the V-phase wire winding portion 92, and the W-phase wire winding portion 102 is disposed within the insulating paper 16. This insulation component 3 can improve insulation performance and enhance product stability.

[0039] like Figure 12 , Figure 13 The stator shown also includes an injection molding layer 12, which includes a tooth head 6 sidewall 13, a stator slot wall 14, and a chassis wall 15. The injection molding layer 12 is consistent with the outer structure of the iron core 1 and is sleeved on the outside of the iron core 1.

[0040] Figure 11-13 As shown, a slot 18 is provided on the top of the tooth head 6, and a corresponding slot opening 19 is provided on the side wall 13 of the tooth head of the injection molding layer 12. A plug block 20 is provided at the bottom of the insert 4, and the plug block 20 is disposed in the slot 18. The number of inserts 4 is the same as that of the tooth head 6, and they are disposed on the top of the tooth head 6. These inserts 4 can fix the winding 2 and improve the stability of the product.

[0041] By setting teeth 6 on the iron core 1, the original vertical stator slots 7 are optimized into horizontal stator slots 7, and the winding method of the winding 2 is optimized into horizontal spiral winding. The U-phase wire connecting part 83, V-phase wire connecting part 93, and W-phase wire connecting part 103 connect the U-phase wire winding part 82, V-phase wire winding part 92, and W-phase wire winding part 102. The U-phase wire winding 82, V-phase wire winding 92, and W-phase wire winding 102 are composed of a single flat wire. This winding 2 structure greatly reduces the number of welding points in the winding 2, prevents breakage and other problems caused by too many welding points, and improves the performance of the product.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A stator for an axial flux motor equipped with a flat wire single-phase molded winding, characterized in that, The motor stator includes an iron core (1), windings (2), insulation components (3), and inserts (4). The iron core (1) is annular and includes a base (5) and teeth (6). The teeth (6) are vertically mounted on the base (5), and stator slots (7) are provided between the teeth (6). The windings (2) include a U-phase winding (8), a V-phase winding (9), a W-phase winding (10), and a center lead (11) connecting the U-phase windings (8), V-phase windings (9), and W-phase windings (10). The U-phase windings (8), V-phase windings (9), and W-phase windings (10) are formed by winding flat wires and are mounted on the teeth (6). The U-phase winding (8) includes a U-phase lead wire (81), a U-phase winding part (82), and a U-phase connection part (83). The V-phase wire winding (9) includes a V-phase wire lead (91), a V-phase wire winding part (92), and a V-phase wire connecting part (93). The W-phase winding (10) includes a W-phase lead wire (101), a W-phase winding portion (102), and a W-phase connection portion (103). The U-phase wire winding section (82) includes a forward U-phase wire winding section (821) and a reverse U-phase wire winding section (822), which are alternately arranged. Adjacent forward U-phase wire winding sections (821) and reverse U-phase wire winding sections (822) are connected by a U-phase wire connecting section (83). The V-phase wire winding section (92) includes a forward V-phase wire winding section (921) and a reverse V-phase wire winding section (922), which are alternately arranged. Adjacent forward V-phase wire winding sections (921) and reverse V-phase wire winding sections (922) are connected by a V-phase wire connecting section (93). The W-phase wire winding section (102) includes a forward W-phase wire winding section (1021) and a reverse W-phase wire winding section (1022), which are alternately arranged. Adjacent forward W-phase wire winding sections (1021) and reverse W-phase wire winding sections (1022) are connected by a W-phase wire connecting section (103). The U-phase winding section (82), V-phase winding section (92) and W-phase winding section (102) are alternately and cyclically arranged, and the number of inserts (4) is the same as that of the tooth head (6), and they are set on the top of the tooth head (6).

2. The stator of an axial flux motor with a flat wire single-phase formed winding according to claim 1, characterized in that, The forward U-phase winding section (821), forward V-phase winding section (921) and forward W-phase winding section (1021) are flat wires wound clockwise from bottom to top, while the reverse U-phase winding section (822), reverse V-phase winding section (922) and reverse W-phase winding section (1022) are flat wires wound counterclockwise from top to bottom.

3. The stator of an axial flux motor with a flat wire single-phase formed winding according to claim 2, characterized in that, The U-phase lead (81) is connected to the bottom end of the positive U-phase winding part (821), the V-phase lead (91) is connected to the bottom end of the positive V-phase winding part (921), and the W-phase lead (101) is connected to the bottom end of the positive W-phase winding part (1021).

4. The stator of an axial flux motor with a flat wire single-phase formed winding according to claim 3, characterized in that, The stator also includes an injection molding layer (12), which includes the tooth head (6) sidewall (13), stator slot wall (14) and chassis wall (15). The injection molding layer (12) is consistent with the outer structure of the iron core (1) and is fitted on the outside of the iron core (1).

5. A stator for an axial flux motor with a flat wire single-phase formed winding according to claim 4, characterized in that, The insulation component (3) includes an interphase insulating sheet (17) and an insulating paper (16). The interphase insulating sheet (17) is disposed on the side adjacent to the U-phase wire winding portion (82) and the V-phase wire winding portion (92), or the V-phase wire winding portion (92) and the W-phase wire winding portion (102), or the W-phase wire winding portion (102) and the U-phase wire winding portion (82). The insulating paper (16) has a rectangular cross-section, and the adjacent sides of the U-phase wire winding portion (82), the V-phase wire winding portion (92) and the W-phase wire winding portion (102) are disposed inside the insulating paper (16).

6. A stator for an axial flux motor with a flat wire single-phase formed winding according to claim 5, characterized in that, The insert (4) is fan-shaped, and the inserts (4) are spliced ​​together to form a ring.

7. A stator for an axial flux motor with a flat wire single-phase formed winding according to any one of claims 1-6, characterized in that, The tooth head (6) has a slot (18) at the top, and the tooth head sidewall (13) of the injection molding layer (12) has a corresponding slot opening (19). The insert (4) has an insert block (20) at the bottom, and the insert block is located in the slot (18).

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