High-power stator structure of hub motor

Abstract

The utility model discloses a high-power stator structure of a wheel hub motor, which comprises a wheel hub motor main body, the wheel hub motor main body comprises a wheel hub, a stator and a motor shaft, the stator is arranged at the inner side of the wheel hub, the motor shaft is arranged on the stator, the high-power stator structure also comprises an enameled wire, the stator is provided with at least six tooth columns along the circumferential direction, and the tooth columns are arranged on the inner side of the wheel hub. The three tooth columns form a unit, the tooth columns in the unit are respectively a first tooth column, a second tooth column and a third tooth column, the enameled wires are wound around the first tooth column, then wound around the third tooth column and finally wound around the second tooth column, and gaps are formed between the adjacent wound enameled wires. According to the utility model, the stator adopts a brand new winding mode for winding on the premise that the size of the hub motor is not influenced, and the slot fullness rate and the lead sectional area in the unit can be effectively increased, so that the resistance can be reduced, the electric energy loss can be reduced, and the power of the motor is effectively improved.

Description

Technical Field

[0001] The utility model relates to a hub motor, in particular to a high-power stator structure of the hub motor. Background Art

[0002] High power density outer rotor hub motor is a motor technology used in the field of electric vehicles. With the development of motor technology, higher requirements are placed on the output capacity of hub motors for electric vehicles. Under the condition of ensuring that the outer diameter of the hub remains unchanged, the power of the motor can only be increased by increasing the stack length of the traditional outer rotor hub motor, but this will increase the axial size of the hub motor, so it needs to be improved. Summary of the invention

[0003] The utility model aims at the defects of the hub motor in the prior art, such as low output torque and inconvenient installation, and provides a new high-power stator structure of the hub motor.

[0004] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0005] A high-power stator structure of a hub motor comprises a hub motor body, wherein the hub motor body comprises a hub, a stator and a motor shaft, wherein the stator is arranged on the inner side of the hub, and the motor shaft is arranged on the stator, and further comprises enameled wire, wherein the stator is provided with at least six tooth columns along the circumferential direction, and three of the tooth columns form a unit, and the tooth columns in the unit are respectively a first tooth column, a second tooth column and a third tooth column, wherein the enameled wire is firstly wound around the first tooth column, then around the third tooth column, and finally around the second tooth column, and after winding, a gap is formed between adjacent enameled wires.

[0006] The stator of the utility model is wound by a new winding method without affecting the size of the hub motor, which can effectively increase the slot fill rate and the cross-sectional area of ​​the wire in the unit, thereby reducing resistance and reducing power loss, thereby effectively improving the power of the motor.

[0007] Preferably, in the high-power stator structure of the hub motor described above, the enameled wires between adjacent units 3 are connected in parallel.

[0008] The parallel connection of the enameled wires of adjacent units can effectively improve the stability and reliability of the hub motor during operation.

[0009] Preferably, in the high-power stator structure of a hub motor described above, the hub motor body also includes a high-temperature wire, the motor shaft is provided with a wire threading hole, and the enameled wires between adjacent units are integrated and connected with the high-temperature wire and then pass through the wire threading hole.

[0010] The provision of the threading hole facilitates the enameled wire to pass through the hub motor.

[0011] Preferably, in the high-power stator structure of the hub motor described above, the gear column is made of silicon steel sheets.

[0012] Silicon steel sheets can increase the resistance and magnetic conductivity of the hub motor while reducing the heat generation of the hub motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the main body of the hub motor of the utility model;

[0014] Figure 2 It is a schematic diagram of the longitudinal section structure of the stator of the utility model;

[0015] Figure 3 This is a winding diagram of the enameled wire of the utility model. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-3 The present invention is further described in detail with the following specific embodiments, but they are not intended to limit the present invention:

[0017] Example 1

[0018] like Figure 1 , Figure 2 , Figure 3 As shown, a high-power stator structure of a hub motor includes a hub motor body 1, wherein the hub motor body 1 includes a hub 11, a stator 12 and a motor shaft 13, wherein the stator 12 is arranged on the inner side of the hub 11, and the motor shaft 13 is arranged on the stator 12, and further includes an enameled wire 2, wherein the stator 12 is provided with at least six tooth columns 121 along the circumferential direction, and three of the tooth columns 121 form a unit 3, wherein the tooth columns 121 in the unit 3 are respectively a first tooth column 31, a second tooth column 32 and a third tooth column 33, wherein the enameled wire 2 is firstly wound around the first tooth column 31, then around the third tooth column 33, and finally around the second tooth column 32, and a gap is formed between adjacent enameled wires 2 after winding.

[0019] Specifically, the utility model uses a new winding method to increase the slot fill rate and the cross-sectional area of ​​the wire, reduce resistance, reduce power loss, increase power, reduce starting current, make starting more stable, and reduce heating and instability caused by excessive resistance.

[0020] Preferably, the enameled wires 2 between adjacent units 3 are connected in parallel.

[0021] Specifically, the utility model can change the shape of the tooth column 121 according to different powers, so that the copper wire with a larger diameter specification of the enameled wire 2 can be wound.

[0022] Preferably, the hub motor body 1 further comprises a high temperature wire 14 , the motor shaft 13 is provided with a threading hole 131 , and the enameled wires 2 between adjacent units 3 are integrated and connected with the high temperature wire 14 and then pass through the threading hole 131 .

[0023] Specifically, connecting the enameled wire 2 with the high-temperature wire 14 can improve the smooth operation of the hub motor at high temperatures and reduce the risk of failure caused by high temperatures.

[0024] Preferably, the tooth column 121 is made of silicon steel sheet.

[0025] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A high-power stator structure of a hub motor, comprising a hub motor body (1), wherein the hub motor body (1) comprises a hub (11), a stator (12) and a motor shaft (13), wherein the stator (12) is arranged on the inner side of the hub (11), and the motor shaft (13) is arranged on the stator (12), characterized in that: The invention also comprises an enameled wire (2), wherein the stator (12) is provided with at least six tooth columns (121) along the circumferential direction, three of the tooth columns (121) form a unit (3), the tooth columns (121) in the unit (3) are respectively a first tooth column (31), a second tooth column (32) and a third tooth column (33), the enameled wire (2) is firstly wound around the first tooth column (31), then around the third tooth column (33), and finally around the second tooth column (32), and after winding, a gap is formed between adjacent enameled wires (2).

2. The high-power stator structure of a hub motor according to claim 1, characterized in that: The enameled wires (2) between adjacent units (3) are connected in parallel.

3. The high-power stator structure of a hub motor according to claim 2, characterized in that: The hub motor body (1) further comprises a high-temperature wire (14); the motor shaft (13) is provided with a wire threading hole (131); the enameled wire (2) between adjacent units (3) is integrated and connected to the high-temperature wire (14) and then passes through the wire threading hole (131).

4. The high-power stator structure of a hub motor according to claim 1, characterized in that: The tooth column (121) is made of silicon steel sheet.

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