Double-rotor yoke-free radial magnetic flux direct-cooling motor

A technology of radial magnetic flux and double rotors, which is applied in the direction of magnetic circuit rotating parts, magnetic circuits, electric components, etc., can solve the problems of high motor cost and power density, and achieves ingenious structure, reasonable design, and solution The effect of cooling bottlenecks

Pending Publication Date: 2019-09-03
上海智御动力技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the traditional heat dissipation bottleneck makes the power density unable to increase and the cost of the motor is too high

Method used

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  • Double-rotor yoke-free radial magnetic flux direct-cooling motor
  • Double-rotor yoke-free radial magnetic flux direct-cooling motor
  • Double-rotor yoke-free radial magnetic flux direct-cooling motor

Examples

Experimental program
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Effect test

Embodiment 1

[0027] specific embodiment Figure 1 to Figure 8 As shown, this embodiment includes the outer rotor assembly part, the inner rotor assembly part and the stator assembly part; the outer rotor assembly part includes the outer rotor bracket 1, the outer rotor left end plate 2, the outer rotor right end plate 3, the outer rotor iron Core 4, outer rotor magnetic steel 5, outer rotor magnetic steel assembly hole 6, outer rotor left end plate 2, outer rotor right end plate 3, outer rotor core 4 are all ring-shaped structures, outer rotor left end plate 2, outer rotor iron The core 4 and the right end plate 3 of the outer rotor are arranged in the outer rotor bracket 1 after they are close together in sequence. The outer rotor magnetic steel 5 and the outer rotor magnetic steel assembly holes 6 are arranged on the inner wall surface of the outer rotor iron core 4 at intervals. The outer rotor magnetic steel 5 , Outer rotor magnetic steel mounting holes 6 are arc-shaped. The inner rot...

Embodiment 2

[0031] In Embodiment 1, the longitudinal sections of the oil discharge hole 20 and the intermediate partition 25 are conical structures; in this embodiment, the longitudinal sections of the oil discharge hole 20 and the intermediate partition 25 can be designed as a rectangular structure, that is, the stator The winding 21 becomes a tapered structure.

[0032] In Embodiment 1, the oil inlet pipe 23 and the oil outlet pipe 24 are respectively arranged at the upper and lower ends of the right side wall of the stator winding right outer cover 18; Optimization, as long as the upper part of the oil chamber is connected with the oil inlet pipe 23, and the lower part of the oil chamber is connected with the oil outlet pipe 24.

[0033] In Embodiment 1, the two intermediate partitions 25 are arranged in the middle part of the stator winding right outer cover 18, and there is no restriction on the circumferential distribution angle of the upper and lower oil chambers; according to the ...

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Abstract

The invention relates to a double-rotor yoke-free radial magnetic flux direct-cooling motor in the technical field of motors. The motor comprises an external rotor assembly part, an internal rotor assembly part and a stator assembly part. The external rotor assembly part comprises an external rotor support, an external rotor end plate and external rotor magnetic steel. The internal rotor assemblypart comprises a motor shaft, an internal rotor base plate, an internal rotor iron core and internal rotor magnetic steel. The stator assembly part comprises stator winding outer covers, a stator ironcore, stator windings, oil drain holes, oil in-out pipes and a middle separator, the oil drain holes radially and uniformly arranged in the stator iron core, and each stator winding is arranged on the stator iron core between every two oil drain holes. According to the invention, the middle separator is used to divide an oil cavity formed by the stator winding right outer cover and the stator iron core into an upper portion and a lower portion, the oil cavity at the upper portion communicates with an oil inlet pipe, and the oil cavity at the lower portion communicates with an oil outlet pipe.The stator adopts direct oil cooling, and the winding solves the problems that the power density cannot be increased and the motor cost is overhigh due to the traditional heat dissipation bottleneck.

Description

technical field [0001] The invention relates to a double-rotor motor in the technical field of motors, in particular to a double-rotor yokeless radial flux direct cooling motor whose stator adopts direct oil cooling. Background technique [0002] At present, driving motors are mainly divided into DC motors, AC motors and wheel hub motors; among them, DC and AC motors can be further divided. At present, the industry pays more attention to AC asynchronous motors, permanent magnet synchronous motors and switched reluctance motors. The axial flux permanent magnet synchronous motor has significant advantages, such as high torque density, extremely short axial length, and high efficiency, but its mechanical structure design and manufacture are still very difficult. Because the heat of traditional motor windings conducts heat through the small-scale external contact of each wire, the thermal resistance is large, and the temperature gradient must be large for thermal balance and he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02H02K1/20H02K1/32H02K1/27
CPCH02K16/02H02K1/20H02K1/32H02K1/2786
Inventor 李岳
Owner 上海智御动力技术有限公司
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