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Iron core structure of distribution transformer special for electric vehicle

A technology for distribution transformers and electric vehicles, applied in the field of transformers, can solve the problems of slow heat dissipation in the thickness direction, reduced transformer life, and high transformer temperature, and achieve the effects of reducing the amount of materials used, reducing the amount of materials, and reducing temperature rise.

Active Publication Date: 2016-10-12
广东铭嘉新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large stack thickness of this oblong iron core structure, the heat dissipation in the thickness direction is slow, resulting in high temperature of the transformer and shortening the life of the transformer.

Method used

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  • Iron core structure of distribution transformer special for electric vehicle
  • Iron core structure of distribution transformer special for electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 2 As shown in the figure, there is a distribution transformer core structure for electric vehicles. There are several stacked core unit chips inside the core. The multiple core unit chips have similar shapes and different cross-sectional areas. The core unit chips are arranged along the iron core. The core is arranged in the axial direction, and the core unit chip is covered with an insulating layer. The cross-sectional shape of the iron core is an oblong structure, and the insulating layer is also an oblong structure. The insulating layer includes an arc segment and is tangent to the arc segment. straight line segment;

[0027] One chip and two chips are respectively arranged inside the iron core at the tangent between the arc segment and the straight line segment. The core unit chips are stacked between the first chip and the two chips to form an iron core assembly with a double-stepped cross section. And the cross-sectional area of ​​the iron core un...

Embodiment 2

[0032] The difference between this embodiment and Embodiment 1 is that the core unit chip is made of iron-based nanocrystalline alloy.

[0033] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

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Abstract

The invention discloses an iron core structure of a distribution transformer special for an electric vehicle. A plurality of stacked iron core unit chips are arranged inside an iron core, are similar in shape and different in cross section area and are arranged in the axial direction of the iron core and wrapped with an insulation layer, the cross section of the iron core is of a long-circular structure, the insulation layer is also of a long-circular structure, and the insulation layer comprises arc segments and linear segments tangent to the arc segments. According to the iron core structure, a common iron core with a circular section is designed into the iron core with the long-circular section, and the material consumption of the iron core and the production cost are reduced on the basis that the effective section of the iron core is ensured. Linear air channels and stepped arc air channels are arranged among the iron core unit chips, so that the effective heat dissipation area of the iron core is increased, and the heat dissipation effect is enhanced; thus, the temperature rise of the iron core is relieved, the over-excitation running capability of the transformer is improved, and the service life of the transformer is prolonged.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a special distribution transformer iron core structure for electric vehicles. Background technique [0002] The iron core and winding of the traditional oil-immersed transformer are circular structures, for example, the application number is 2005200988031, and the invention name is high-frequency high-voltage transformer iron core. The weight of the iron core has a great relationship with the center distance of the yoke of the iron core. The larger the center distance of the iron yoke, the greater the weight of the iron core and the greater the loss. The cost of the iron core accounts for a relatively high proportion of the cost of the entire transformer. Therefore, in order to reduce the volume of the transformer and reduce the amount of silicon steel sheets without affecting the performance of the iron core, an oblong iron core structure is generally adopted. The applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F27/245H01F27/08
CPCH01F27/085H01F27/22H01F27/245H01F27/266
Inventor 陈凌王琰任琪程晓
Owner 广东铭嘉新能源科技有限公司
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