Spoke type motor stator and rotor structure

Abstract

The utility model belongs to the technical field of motor rotors, and particularly relates to a spoke type motor stator and rotor structure, which comprises a rotor core and a stator core, a plurality of material-saving holes are arranged in the rotor core, a shaft hole is arranged in the middle of the rotor core, a plurality of mounting grooves are circumferentially arranged in the rotor core, and magnets are arranged in the mounting grooves. According to the utility model, the height of the magnet is increased, and the flux density of the iron cores at the two ends of the rotor is increased, so that the air gap flux density is increased, and the efficiency and the power density of the motor are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor rotor technology, and specifically to a spoke-type motor stator and rotor structure. Background Technology

[0002] A spoke motor rotor refers to a motor rotor with a specific structure, characterized by multiple spoke-shaped magnetic poles, which are typically magnetized tangentially. This design enables the motor to generate large torque during operation and achieve high power density and efficiency.

[0003] However, the existing spoke structure motors have the same stator and rotor core and magnet height. Although the spoke structure can concentrate magnets, it does not reach the magnetic saturation state of silicon steel sheets, resulting in low motor efficiency and power density. Utility Model Content

[0004] The purpose of this invention is to provide a spoke-type motor stator and rotor structure that solves the problem of low power in existing motors by increasing the height of the magnets.

[0005] The purpose of this utility model is achieved as follows: a spoke-type motor stator and rotor structure, including a rotor core and a stator core, wherein a plurality of material-saving holes are opened in the rotor core, a shaft hole is opened in the middle of the rotor core, and a plurality of mounting grooves are opened in the inner circumference of the rotor core, wherein a magnet is placed in the mounting groove, and the upper end face of the magnet is 3-8 mm higher than the upper end face of the stator core.

[0006] Preferably, the upper end face of the rotor core is 3-8 mm higher than the upper end face of the stator core.

[0007] Preferably, the upper end face of the rotor core is flush with the upper end face of the magnet.

[0008] Preferably, the lower end face of the magnet protrudes from the lower end face of the stator core by a height of 3-8 mm.

[0009] Preferably, the lower end face of the rotor core protrudes from the lower end face of the stator core by a height of 3-8 mm.

[0010] Preferably, the lower end face of the rotor core is flush with the lower end face of the magnet.

[0011] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0012] This invention increases the magnetic flux density of the iron cores at both ends of the rotor by increasing the height of the magnets, thereby increasing the magnetic flux density of the air gap and improving the efficiency and power density of the motor. Attached Figure Description

[0013] Figure 1Schematic diagram of the rotor core and magnets Figure 1 .

[0014] Figure 2 Schematic diagram of the rotor core and magnet Figure 2 .

[0015] Figure 3 This is a schematic diagram showing the structure where the magnet is higher than the stator and rotor cores.

[0016] Figure 4 for Figure 3 Circuit voltage waveform diagram of the stator-rotor structure.

[0017] Figure 5 for Figure 3 A schematic diagram of the magnetic flux density of the stator and rotor structure.

[0018] Figure 6 This is a schematic diagram showing the structure where the magnet and rotor core are higher than the stator core.

[0019] Figure 7 for Figure 6 Circuit voltage waveform diagram of the stator-rotor structure.

[0020] Figure 8 for Figure 6 A schematic diagram of the magnetic flux density of the stator and rotor structure.

[0021] Figure 9 This is a schematic diagram of a motor where the stator and rotor cores and magnets are of the same height.

[0022] Figure 10 for Figure 9 Circuit voltage waveform diagram of the stator-rotor structure.

[0023] Figure 11 for Figure 9 A schematic diagram of the magnetic flux density of the stator and rotor structure.

[0024] Reference numerals in the attached diagram: 1-Rotor core; 2-Stator core; 3-Saving hole; 4-Shaft hole; 5-Mounting slot; 6-Magnet. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] A spoke-type motor stator and rotor structure includes a rotor core 1 and a stator core 2. The rotor core 1 has several material-saving holes 3, a shaft hole 4 in the middle of the rotor core 1, and several mounting grooves 5 in the inner circumference of the rotor core 1. Magnets 6 are installed in the mounting grooves 5. The upper end face of the magnet 6 is 3-8 mm higher than the upper end face of the stator core 2.

[0027] This invention increases the magnetic flux density of the iron cores at both ends of the rotor by increasing the height of the magnets, thereby increasing the magnetic flux density of the air gap and improving the efficiency and power density of the motor.

[0028] The magnet is 3-8mm higher than the rotor core, and the magnet on one side is 1.5-4mm higher than the core. The magnetic circuit of this 1.5-4mm higher magnet passes through the magnet and the rotor core, which significantly increases the magnetic flux density at the end face of the rotor core (about 2-4mm high), thereby locally increasing the air gap magnetic flux density and achieving the purpose of increasing the air gap magnetic flux density.

[0029] Combination Figure 3-5 When the stator and rotor cores are the same height (25mm), and the magnet is 31mm higher than the magnetic tile on the core surface, the effective value of the air gap magnetic flux density at the measurement point is 0.6323 Tesla. The effective values ​​of the opposite potentials at 1000 RPM are: A: 52.445V, B: 52.332V, C: 52.374V.

[0030] The upper surface of the rotor core 1 is 3-8 mm higher than the upper surface of the stator core 2.

[0031] The upper end face of the rotor core 1 is flush with the upper end face of the magnet 6.

[0032] The lower end face of the magnet 6 protrudes from the lower end face of the stator core 2 by a height of 3-8 mm.

[0033] The lower end face of the rotor core 1 protrudes 3-8 mm above the lower end face of the stator core 2.

[0034] Combination Figure 6-8 When the stator and rotor core heights are different (stator 25mm, rotor 31mm), and the magnets are flush with the core surface with a magnetic tile height of 31mm, the effective value of the air gap magnetic flux density at the measurement point is 0.63651 Tesla. The effective values ​​of the opposite potentials at 1000 RPM are: A: 53.7418V, B: 53.6275V, C: 53.6713V.

[0035] The lower end face of the rotor core 1 is flush with the lower end face of the magnet 6.

[0036] Combination Figure 9-11 When the stator and rotor cores are the same height (25mm), the magnets are flush with the core surface and the magnetic tile height is 25mm, the effective value of the air gap magnetic flux density at the measurement point is 0.5548 Tesla. The effective values ​​of the opposite potentials are 1000 RPM: A: 47.8339V, B: 47.737V, C: 47.7726V.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wheel-spoke motor stator-rotor structure, characterized by, It includes a rotor core (1) and a stator core (2). The rotor core (1) has several material-saving holes (3) and a shaft hole (4) in the middle. The rotor core (1) has several mounting slots (5) in the circumferential direction. A magnet (6) is installed in the mounting slot (5). The upper end face of the magnet (6) is 3-8 mm higher than the upper end face of the stator core (2).

2. The spoke motor stator-rotor structure of claim 1, wherein: The height of the upper end face of the rotor core (1) above the upper end face of the stator core (2) is 3-8 mm.

3. The spoke motor rotor structure of claim 2, wherein: The upper end face of the rotor core (1) is flush with the upper end face of the magnet (6).

4. The spoke motor rotor structure of claim 1, wherein: The lower end face of the magnet (6) protrudes from the lower end face of the stator core (2) by a height of 3-8 mm.

5. The spoke motor rotor structure of claim 4, wherein: The lower end face of the rotor core (1) protrudes 3-8 mm above the lower end face of the stator core (2).

6. The spoke motor rotor structure of claim 5, wherein: The lower end face of the rotor core (1) is flush with the lower end face of the magnet (6).

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