Flat wire hub motor

Abstract

The utility model discloses a flat wire hub motor, and relates to the field of electric vehicle hub motors, the flat wire hub motor comprises a rotor assembly and a flat wire stator assembly, the rotor assembly comprises a hub arranged on the outermost ring, a plurality of magnetic steels are uniformly arranged on the inner wall of the hub, two ends of the hub are respectively provided with a magnetic conductive ring, and the magnetic conductive rings are arranged on the periphery of the hub. The magnetic conductive rings are located at the edges of the two ends of the magnetic steel, and the flat wire stator assembly is arranged in the rotor assembly. One end of the motor support is provided with a disc brake end cover, the other end of the motor support is provided with an end cover, and the surface of the end cover is provided with an outgoing line. By adopting the flat wire hub motor stator structure, the slot fullness rate of the motor can be improved, the current density can be reduced, the overload capacity of the motor can be improved, the temperature rise can be reduced, and the explosive power of an electric vehicle can be improved. According to the utility model, the slot fullness rate and the winding rigidity can be improved, thereby reducing the winding loss, reducing the temperature rise of the motor, improving the explosive power of the motor and reducing the vibration noise.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle hub motors, in particular to a flat wire hub motor. Background Art

[0002] With the widespread adoption of electric vehicles and the continuous improvement of relevant national regulations, there is a growing demand for power that is more energy-efficient, has higher power density, is lightweight, and features intelligent technology. Currently, the industry's common practice is to use circular in-wheel motors, which have low slot fill rates, poor overload capacity, and high temperature rise, making them unable to meet the power needs of future electric vehicles. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a flat wire hub motor to solve the technical problem that the common practice in the industry is to use round wire hub motors, which have low slot fill rate, poor overload capacity and high temperature rise, and can no longer meet the power requirements of future electric vehicles.

[0004] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a flat wire hub motor, including a rotor assembly and a flat wire stator assembly, the rotor assembly includes a hub arranged on the outermost ring, a plurality of magnets are evenly arranged on the inner wall of the hub, and a magnetic ring is provided at each end of the hub, and the magnetic ring is located at the edge of the two ends of the magnet, and the flat wire stator assembly is arranged inside the rotor assembly.

[0005] As a preferred technical solution of the present utility model, the flat wire stator assembly includes a shaft arranged at the center position of the wheel hub, a motor bracket is installed on the outer wall of the shaft, the flat wire stator assembly is arranged on the surface of the motor bracket, a disc brake end cover is provided at one end of the motor bracket, and an end cover is provided at the other end of the motor bracket, and a lead wire is provided on the surface of the end cover.

[0006] As a preferred technical solution of the present invention, the flat wire stator assembly includes a plurality of flat wire core components arranged on the surface of the motor bracket, and each of the flat wire core components is connected to a lead wire.

[0007] As a preferred technical solution of the present invention, the flat wire core assembly includes an iron core assembly and a flat wire directly wound around the iron core assembly.

[0008] As a preferred technical solution of the present invention, the core assembly is provided with an insert and an insert groove, and the insert and the insert groove are assembled and formed by mutual interlocking.

[0009] As a preferred technical solution of the present invention, the wheel hub is made of aluminum alloy, steel or engineering plastics.

[0010] As a preferred technical solution of the present invention, the magnetic ring is made of silicon steel sheet.

[0011] As a preferred technical solution of the present invention, the magnetic steel is tile-shaped, straight-piece-shaped or bread-shaped.

[0012] As a preferred technical solution of the present invention, the number of slots / number of magnetic pole pairs of the flat wire stator assembly is any fractional slot ratio such as 54 / 30, 54 / 28, 36 / 21, 36 / 20, or 36 / 16.

[0013] The utility model adopts a flat wire hub motor stator structure, which can improve the motor slot fill rate and reduce the electrical density, thereby improving the motor overload capacity, reducing temperature rise, and improving the explosive power of the electric vehicle.

[0014] The utility model can improve the slot filling rate and the winding stiffness, thereby reducing the winding loss, lowering the temperature rise of the motor, improving the explosive power of the motor and reducing vibration noise.

[0015] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the shaft, disc brake end cover and rotor assembly of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the shaft, disc brake end cover and rotor assembly of the utility model;

[0018] Figure 3 This is a structural diagram of the utility model wherein the core assembly, inserts and slots are installed on the motor bracket;

[0019] Figure 4 This is a schematic structural diagram of the wheel hub, magnetic steel, and magnetic ring of the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the magnetic steel of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the flat wire wound on the iron core assembly of the utility model;

[0022] In the figure: shaft 1, disc brake end cover 2, rotor assembly 3, flat wire stator assembly 4, end cover 5, lead wire 8, flat wire core assembly 9, motor bracket 10, flat wire 12, core assembly 13, insert and slot 14, wheel hub 15, magnet 16, magnetic ring 17. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the above description of the present invention, it should be noted that the terms "one side" and "the other side" and the like indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0027] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted. Example 1

[0028] See also Figure 1-6, which is a technical solution provided by the utility model: a flat wire hub motor, including a rotor assembly 3 and a flat wire stator assembly 4. The rotor assembly 3 includes a hub 15 arranged on the outermost ring, and a plurality of magnets 16 are evenly arranged on the inner wall of the hub 15. A magnetic ring 17 is provided at each end of the hub 15. The magnetic ring 17 is located at the edge of the two ends of the magnet 16. The flat wire stator assembly 4 is arranged inside the rotor assembly 3.

[0029] Among them, the utility model includes a flat wire stator assembly 4, a rotor assembly 3, and an end cover 5. A gap is provided between the flat wire stator assembly 4 and the rotor assembly 3, and the flat wire stator assembly 4 is connected to the rotor assembly 3 through the end cover 5 and the shaft 1 bearing. The flat wire stator assembly 4 includes a flat wire core assembly 9 and a motor bracket; the flat wire core assembly 9 includes an iron core assembly 13 and a flat wire 12 directly wound on the iron core assembly 13. The flat wire core assembly 9 is connected together by inserts and insert slots 14. The utility model can improve the slot fill rate and winding stiffness, thereby reducing winding loss, reducing motor temperature rise, improving motor explosive power and reducing vibration noise.

[0030] The flat wire stator assembly 4 includes a shaft 1 arranged at the center position of the wheel hub 15, a motor bracket 10 is installed on the outer wall of the shaft 1, the flat wire stator assembly 4 is arranged on the surface of the motor bracket 10, a disc brake end cover 2 is provided at one end of the motor bracket 10, and an end cover 5 is provided at the other end of the motor bracket 10, and a lead wire 8 is provided on the surface of the end cover 5.

[0031] The flat wire stator assembly 4 includes a plurality of flat wire core components 9 arranged on the surface of the motor bracket 10 , and each flat wire core component 9 is connected to a lead wire 8 .

[0032] The flat wire core assembly 9 includes a core assembly 13 and a flat wire 12 directly wound around the core assembly 13 .

[0033] The core assembly 13 is provided with an insert and an insert groove 14 , which are assembled and fitted together.

[0034] The wheel hub 15 is made of aluminum alloy, steel or engineering plastics.

[0035] The magnetic ring 17 can be made of silicon steel sheet or any other magnetic conductive material.

[0036] The magnetic steel 16 is in the shape of a tile, a straight piece or a bread.

[0037] The number of slots / number of pole pairs of the flat wire stator assembly 4 is any fractional slot such as 54 / 30, 54 / 28, 36 / 21, 36 / 20, or 36 / 16.

[0038] The utility model adopts a flat wire hub motor stator structure, which can improve the motor slot fill rate and reduce the electrical density, thereby improving the motor overload capacity, reducing temperature rise, and improving the explosive power of the electric vehicle.

[0039] The utility model can improve the slot filling rate and the winding stiffness, thereby reducing the winding loss, lowering the temperature rise of the motor, improving the explosive power of the motor and reducing vibration noise.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A flat wire hub motor, comprising a rotor assembly (3) and a flat wire stator assembly (4), characterized in that: The rotor assembly (3) includes a hub (15) arranged on the outermost ring, a plurality of magnetic steels (16) are evenly arranged on the inner wall of the hub (15), and a magnetic ring (17) is provided at each end of the hub (15). The magnetic ring (17) is located at the edge of the two ends of the magnetic steel (16), and the flat wire stator assembly (4) is arranged inside the rotor assembly (3).

2. The flat wire hub motor according to claim 1, characterized in that: The flat wire stator assembly (4) includes a shaft (1) arranged at the center of the wheel hub (15), a motor bracket (10) is installed on the outer wall of the shaft (1), the flat wire stator assembly (4) is arranged on the surface of the motor bracket (10), one end of the motor bracket (10) is provided with a disc brake end cover (2), the other end of the motor bracket (10) is provided with an end cover (5), and a lead wire (8) is provided on the surface of the end cover (5).

3. The flat wire hub motor according to claim 2, characterized in that: The flat wire stator assembly (4) comprises a plurality of flat wire core components (9) arranged on the surface of a motor bracket (10), and each of the flat wire core components (9) is connected to a lead wire (8).

4. The flat wire hub motor according to claim 3, characterized in that: The flat wire core assembly (9) comprises a core assembly (13) and a flat wire (12) directly wound around the core assembly (13).

5. The flat wire hub motor according to claim 4, characterized in that: The core assembly (13) is provided with an insert and an insert groove (14), and the insert and the insert groove are assembled and formed by interlocking with each other.

6. The flat wire hub motor according to claim 1, characterized in that: The wheel hub (15) is made of aluminum alloy, steel or engineering plastics.

7. The flat wire hub motor according to claim 1, characterized in that: The magnetic conductive ring (17) is a silicon steel sheet.

8. The flat wire hub motor according to claim 7, characterized in that: The magnetic steel (16) is of tile type, straight piece type or bread type.

9. The flat wire hub motor according to claim 1, characterized in that: The number of slots / number of magnetic pole pairs of the flat wire stator assembly (4) is any fractional slot of 54 / 30, 54 / 28, 36 / 21, 36 / 20, or 36 / 16.

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