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Ultrathin axial motor stator structure with stamping back plate and disc type motor

An axial motor and stator structure technology, which is applied to synchronous motors with static armatures and rotating magnets, magnetic circuit shape/style/structure, electric components, etc., can solve the problem of low motor power density, low motor power, Weak magnetic field strength, etc., to achieve the effect of high degree of sinusoidal distribution, reduced assembly process, and low harmonic content

Pending Publication Date: 2020-11-10
SHENZHEN HENGDRIVER MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic field strength in the gap between the permanent magnets on the existing disc motor is relatively weak, resulting in a low power density of the motor, and a larger disc motor is required to achieve the same power of the motor.
The existing disc motor adopts a gear structure, which is large in size and low in power

Method used

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  • Ultrathin axial motor stator structure with stamping back plate and disc type motor
  • Ultrathin axial motor stator structure with stamping back plate and disc type motor
  • Ultrathin axial motor stator structure with stamping back plate and disc type motor

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 , figure 2 As shown, the structure of the disc motor according to the embodiment of the present invention includes a rotor structure and a stator structure.

[0029] Such as image 3 As shown, the rotor structure includes a rotating shaft 1 , a rotor disk 2 and a permanent magnet 3 . Wherein the permanent magnet 3 is trapezoidal, and there is a certain gap between every two permanent magnets 3 . The rotor disc 2 integrally molds the rotating shaft 1 and the permanent magnet 3 by injection molding, which can effectively prevent the permanent magnet from shifting during the rotation of the rotor and ensure the reliability of the motor. Reduce the motor assembly process and reduce labor costs.

[0030] Such as Figure 4 As shown, the stator structure includes a coil 4 , a back plate 6 - 1 , a bearing support 7 and a bearing 8 . The coil 4 is fixed on the back plate 6-1 by means of injection molding or pouring molding, which can play a role of fixing...

Embodiment 2

[0040] refer to Figure 6, an ironless ultra-thin axial motor rotor structure proposed by the present invention, including a rotor disk 2, a rotating shaft 1, and a permanent magnet 3, and also includes an auxiliary permanent magnet 3-1, and the permanent magnets 3 are distributed in an annular array. Adjacent to the gap between the permanent magnets 3, a plurality of auxiliary permanent magnets 3-1 are arranged, and the magnetization direction of the permanent magnets 3 and the auxiliary permanent magnets 3-1 forms a certain angle. The permanent magnet 3-1 is embedded in the bottom of the rotor disk, and the rotating shaft 1 runs through the center of the rotor disk 2 and is integrally formed therewith.

[0041] The function of the stator tooth structure is to guide the magnetic flux generated by the permanent magnet to pass through the winding coil, reduce the leakage flux of the motor, and improve the torque and efficiency of the motor. However, the existence of the stator...

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Abstract

An ultrathin axial motor stator structure with a stamping back plate and a disc type motor are disclosed. The stator structure comprises a back plate, a coil bearing support and a bearing; the back plate is provided with coil holes in an annular array, coils are installed in the coil holes, the center of the back plate is provided with a bearing support installation hole, and the bearing support installation hole is communicated with the coil holes. The bearing support is inserted into the bearing support mounting hole in an interference fit mode, the bearing support is of a hollow structure,two bearings are arranged in the hollow structure of the bearing support, and the rotating shaft is inserted into the two bearings; the back plate is of a hollowed-out circular ring structure, and a rotating shaft on the inner circle face of a center circular ring of the back plate is tightly matched. The hollowed-out part of the back plate is used for fixing a coil and replacing a wire slot; theback plate is machined in a punch forming mode. Since the backboard is formed by stamping and is made of the electrolytic galvanized steel sheet, compared with the conventional stator iron core processing mode and material, the material is cheaper, the processing mode is easier, and the cost of the motor can be reduced.

Description

technical field [0001] The invention relates to the technical field of disc motors, in particular to an ultra-thin axial motor stator structure with a stamped back plate and a disc motor. Background technique [0002] Due to the design of the axial magnetic field of the disc motor, the stator and rotor are both disc structures, and have a large radial size and a small axial size, with a large moment of inertia and stable operation. Compared with the traditional radial field motor, it has the characteristics of short axial dimension, small volume, light weight and high power density. At the same time, in order to improve the utilization rate of permanent magnetic materials, Halbach arrays are mostly used to improve the utilization efficiency of magnetic materials. Disk motors are widely used in driving motors of transportation equipment and private service systems, and have broad market application prospects. However, the strength of the magnetic field in the gap between th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/24H02K1/27H02K1/14H02K5/16
CPCH02K1/14H02K1/2793H02K5/161H02K21/24H02K2201/03H02K2213/03
Inventor 张国华杨锦黄珍
Owner SHENZHEN HENGDRIVER MOTOR CO LTD