Stator assembly and motor having the same

A component and stator technology, which is applied in the field of stator components with cooling and ventilation structure, can solve the problems of restricting the heat transfer rate of the motor heat generation link, the threat of stable performance of permanent magnet magnetic poles, and the large loss of along the process and local resistance, etc., to achieve reduction Small expansion deformation, prolonging service life, and preventing air gap from narrowing

Active Publication Date: 2020-12-04
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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  • 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 having the same
  • Stator assembly and motor having the same
  • Stator assembly and motor having the same

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical concept of the present invention, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals always represent the same components.

[0025] Such as figure 1 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 column (support column) 210 of the stator bracket 200 is combined with the dovetail groove 110 by fasteners , the silicon steel sheet is fixed to the supporting sh...

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Abstract

The invention relates to a stator assembly and an electric machine with the stator assembly. A stator assembly, comprising a stator core (100, 500) and a stator bracket (200, 600) supporting the stator core (100, 500), the stator assembly also includes an airflow conveying device, the airflow conveying device It is configured to deliver a first cold air flow to a radial side surface of the stator core (100, 500) opposite to an air gap side in a radial direction of the stator core (100, 500). According to the embodiment of the present invention, the other side of the stator opposite to the air gap can be cooled during the operation of the motor, so that both radial sides of the stator are cooled at the same time, reducing the expansion and deformation of the stator core and preventing air gap 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, more specifically, to a stator assembly with a cooling ventilation structure and a motor with the stator assembly. Background technique [0002] The iron core is an important part of the magnetic circuit of the motor. The stator core, the rotor and the air gap between the stator and the rotor form the magnetic circuit of the motor. In an induction motor, the magnetic flux in the stator core is alternating, resulting in core loss, which is called iron loss. Iron loss includes two parts: hysteresis loss and eddy current loss. Hysteresis loss is the energy loss caused by the continuous change of the orientation of magnetic molecules in the iron core when it is magnetized alternately. The eddy current loss is due to the eddy current generated by the iron core when it is alternately magnetized and the resistance loss caused by the eddy current. They are part of the heat source that is genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20H02K9/04
CPCH02K1/20H02K9/04H02K7/1838H02K9/10H02K1/187H02K9/00F03D80/60F05B2240/122F05B2260/209
Inventor 马盛骏
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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