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Rotor structure of a drive motor

A technology of rotor structure and driving motor, applied in the direction of magnetic circuit shape/pattern/structure, electromechanical device, electrical components, etc., can solve the problems of increasing direct-axis reactance, affecting motor performance, lack of increase, etc., to improve the salient pole rate , Improve magnet utilization, efficiency and performance improvement

Active Publication Date: 2020-06-23
深圳市泉胜新技术开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the direct-axis ribs will increase the leakage flux, increase the direct-axis reactance, and affect the performance of the motor.
In the prior art, there is a lack of a technical solution that can meet the rigidity and strength requirements during high-speed rotation and avoid the increase of magnetic flux leakage

Method used

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  • Rotor structure of a drive motor

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] refer to figure 1 , the embodiment of the present invention provides a rotor structure for driving a motor, including a rotor punch 1, six V-shaped grooves 2 arranged in a circular array on the rotor punch 1, and a straight shaft is arranged in the middle of each V-shaped groove 2 Reinforcing rib 3, a rectangular magnetic steel 4 is inlaid on both sides of each V-shaped groove 2, an unloading hole 5 is opened under the straight axis reinforcing rib 3, and the outer ring of the rotor punch 1 is connected to each V-shaped groove 2. Magnetic isolation bridges 6 are provided at both ends of the groove 2, and an intersecting rib 7 is formed between two adjacent V-shaped grooves.

[0019] A first lightening hole 8 is opened between the two adjacent V-shaped groove groups; a second lightening hole is opened above the straight-axis reinforcing ...

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Abstract

The invention discloses a rotor structure of a drive motor. The rotor structure comprises a rotor sheet and a plurality of V-shaped grooves, wherein the plurality of V-shaped grooves are circularly arrayed on the rotor sheet; a direct-axis reinforcing rib is arranged at a middle position of each of the V-shaped grooves; a rectangular magnetic steel is embedded into two edges of the each of the V-shaped grooves; and an unloading hole is formed below each of the direct-axis reinforcing ribs. According to the rotor structure, through the above structural design, the strength of the rotor structure is improved, an armature direct-axis magnetic circuit can be effectively hindered, the direct-axis inductance is reduced, the saliency ratio is improved, and the reluctance torque is improved; and furthermore, the leakage flux at the place is reduced, the utilization ratio of a magnet is improved, and the efficiency and performance of a motor applying the rotor are obviously improved.

Description

technical field [0001] The invention relates to the design field of permanent magnet motors, in particular to a rotor structure of a driving motor. Background technique [0002] Built-in permanent magnet motors are widely used in new energy electric vehicles because of their advantages such as high torque density, wide field weakening range and high operating efficiency. [0003] In the prior art, the rotor of the built-in permanent magnet motor generally protects the rotor from being deformed and damaged by its centrifugal force through a magnetic isolation bridge and cross-axis reinforcing ribs, and two pieces of magnetic steel are inserted into both sides of the V-shaped groove to fix them; some In order to further improve the structural strength of the rotor, the motor usually figure 1 A direct-axis stiffener is added to the middle of the V-shaped groove of the rotor punch in the middle, which can improve the rigidity and strength of the rotor, so as to ensure that the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/28
CPCH02K1/27H02K1/276H02K1/28
Inventor 沈哲林文泉易宇
Owner 深圳市泉胜新技术开发有限公司
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