Stator assembly and motor with the stator assembly

A stator and component technology, which is applied in the field of stator components and motors having the stator components, can solve the problems such as the threat of performance stability of permanent magnet magnetic poles, the restriction of heat transfer rate in the heat-producing link of the motor, and the large loss of resistance along the path and in local areas. Achieve the effect of reducing expansion deformation, preventing air gap from narrowing, and prolonging service life

Active Publication Date: 2020-12-29
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this cooling method, the loss of fluid transmission along the process and local resistance is relatively large, which restricts the heat transfer rate of the internal heat generation link of the motor, so that the key internal structure of the motor-the insulation structure still has a high temperature rise and permanent magnet The stability of the magnetic pole performance guarantees the risk of being threatened

Method used

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  • Stator assembly and motor with the stator assembly
  • Stator assembly and motor with the stator assembly
  • Stator assembly and motor with the stator assembly

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Embodiment Construction

[0029] Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings by taking the inner stator of the motor as an example.

[0030] Such as figure 1 with figure 2 As shown, in order to reduce eddy current loss and other losses, the stator core 100 of the motor is made of ferromagnetic conductor thin sheets with large resistivity and small hysteresis loop area, which are punched and insulated, and then laminated. In the prior art, when manufacturing the stator core, a plurality of fan-shaped silicon steel sheets are usually spliced ​​along the circumferential direction and stacked along the axial direction, and the support column 210 of the stator bracket 200 is combined with the dovetail groove 110 by fasteners, so that the The silicon steel sheet is fixed on the supporting shroud 220 of the stator bracket along the circumferential direction, and the axial ends are clamped by the tooth pressure plate 140 , thereby forming a ...

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Abstract

The invention provides a stator assembly and a motor with the stator assembly. The stator assembly includes a stator bracket and a stator core installed on the stator bracket, and the stator bracket includes a support shroud, formed between the support shroud of the stator bracket and the radial side surface of the stator core. There is a first axial airflow passage, and the stator assembly further includes an airflow conveying unit for supplying the first cold airflow to the first axial airflow passage, so that the cold airflow flows in the axial direction. According to the embodiment of the present invention, during the operation of the motor, a cold airflow can be introduced to the other side of the stator opposite to the air gap, so that both radial sides of the stator can be cooled at the same time, reducing the expansion and deformation of the stator core and preventing The air gap is narrowed, and at the same time, it prevents the stator from high-temperature baking of the magnetic poles, protects the magnetic poles, and prolongs the service life of the motor.

Description

technical field [0001] The present invention relates to the technical field of motors, and more specifically, to a stator assembly with a cooling structure and a motor with the stator assembly. Background technique [0002] During the operation of the motor, a large amount of heat will be generated. The heat source comes from the inside of the motor, part of which is the copper loss generated when the current flows through the stator winding, and part of it is the iron loss generated when the magnetic flux in the iron core changes. The losses are converted into heat, which increases the temperature of the motor. The temperature rise of the motor will directly affect the service life and rated capacity of the motor, and will also cause motor failure. One of the main risks of motor failure caused by motor heating is that the air gap between the stator and the rotor decreases due to the thermal expansion of the stator core. The permanent magnet poles set on the rotor may be da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/18H02K1/20H02K9/10H02K9/22
CPCH02K1/18H02K1/20H02K9/10H02K9/227Y02E10/72H02K1/187H02K9/12H02K7/1838
Inventor 马盛骏
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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