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Flat aluminum wire wrapped with composite film

A technology of composite film and aluminum flat wire, applied in the field of electric power

Inactive Publication Date: 2014-05-21
无锡友方电工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Since many transformers and traction motors require large currents, it is necessary for the winding wires to be oversized, with a large aspect ratio and the insulation layer to maintain a withstand voltage performance of more than 2000 volts under the condition of strong bending of the winding wires, which is difficult for existing products to meet

Method used

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  • Flat aluminum wire wrapped with composite film

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Embodiment Construction

[0017] In order for those skilled in the art to better understand the technical solutions provided by the present invention, the following will be described in conjunction with specific embodiments.

[0018] See figure 1 , which is a schematic cross-sectional structure diagram of a flat aluminum wire wrapped with a composite film in an embodiment of the present invention.

[0019] The composite film-wrapped aluminum flat wire provided by the embodiment of the present invention has a flat cross-section of the composite film-wrapped aluminum flat wire, and includes an inner conductor 1 and an insulating layer 2 compounded on the outer surface of the inner conductor 1. The insulating layer 2 is made of poly The imide-fluorine 46 composite film, the internal conductor 1 is a flat aluminum wire with a large aspect ratio. The ratio of the length to the width of the inner conductor 1 is greater than 4.

[0020] The insulating layer 2 is a composite insulating layer with an adhesive...

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Abstract

The invention discloses a flat aluminum wire wrapped with a composite film. The section of the flat aluminum wire wrapped with the composite film is in flat shape. The flat aluminum wire wrapped with the composite film comprises an inner conductor and an insulating layer combined onto the outer surface of the inner conductor, wherein the insulating layer is a polyimide-fluorine46 composite film, and the inner conductor is a flat aluminum wire large in width-to-thickness ratio. Compared with the prior art, the flat aluminum wire wrapped with the composite film meets the requirement that a transformer and a traction motor can withstand voltage above 2000V under the condition that coils of the transformer and the traction motor are strongly bent, and the flat aluminum wire wrapped with the composite film can be used in the coils of the transformer and the traction motor.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a flat aluminum wire wrapped with a composite film. Background technique [0002] Film wrapping wire is an important variety of winding wire. It is composed of conductor and film insulation layer. After the bare wire is annealed and softened, it is wrapped and baked for many times. However, it is not easy to produce products that meet the requirements of the standard and meet the requirements of customers. It is affected by factors such as raw material quality, process parameters, production equipment, and the environment. Therefore, the quality characteristics of various wrapping wires are different, but All have the four major properties of mechanical properties, chemical properties, electrical insulation properties and thermal properties. [0003] According to the purpose of wrapping wire, it can be divided into: [0004] 1. General-purpose enameled wire (ordinary wire) is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/08H01B7/02
Inventor 李维柱
Owner 无锡友方电工股份有限公司