CN204229863U - A kind of motor winding enamel-cover electromagnetic wire - Google Patents

Abstract

The utility model discloses an enamelled electromagnetic wire for motor winding, which comprises an inner conductor and an insulating layer compounded on the outer surface of the inner conductor; wherein, the inner conductor includes a pair of twisted-pair wires, and each twisted-pair wire includes an aluminum-zirconium alloy A core and a copper-plated layer, the copper-plated layer is coated on the outer surface of the aluminum-zirconium alloy core; the cross-section of the insulating layer is circular, and its outer surface is coated with a nano-insulation layer, and the nano-insulation layer The thickness of the insulating layer is 1 mm to 2.5 mm, and a wave-absorbing band for avoiding external electromagnetic wave interference is also provided in the insulating layer. The utility model has excellent electrical conductivity, simple structure, low manufacturing cost, and high practicability. In addition, the nano insulating layer has a modification effect on ordinary insulating layers, and has good aging resistance and corrosion resistance. It is used in the field of continuously variable speed transmission in metallurgy, mining, coal, textile, water conservancy, shipbuilding and other industries.

Description

A kind of enamelled electromagnetic wire for motor winding

technical field

The utility model relates to the field of electric power, in particular to an enamelled electromagnetic wire for motor windings.

Background technique

Enameled magnet wire is a main variety of winding wire, which is composed of two parts: conductor and paint film insulation layer. After the bare wire is annealed and softened, it is painted and baked several times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and the environment. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical insulation properties, thermal properties four major properties.

The classification of enamelled electromagnetic wire is divided into insulating materials: acetal enameled wire, polyester enameled wire, polyurethane enameled wire, modified polyester enameled wire, polyesterimide enameled wire, polyesterimide/polyamideimide enameled wire, polyimide Amine enameled wire and so on.

According to the use of enamelled electromagnetic wire, it can be divided into:

1. General-purpose enamelled magnet wire (ordinary wire) is mainly used for general motors, electrical appliances, and instruments. Winding wires for transformers and other workplaces, such as: polyester enameled wire, modified polyester enameled wire;

2. Heat-resistant enamelled electromagnetic wire; mainly used for winding wires of motors, electrical appliances, instruments, transformers and other workplaces working at 180°C and above, such as: polyesterimide enameled wire, polyimide enameled wire, polyester Imine/polyamideimide composite enameled wire, etc.;

3. Special-purpose enameled electromagnetic wire; refers to enameled wire with certain quality characteristics requirements, used for winding wires in specific occasions, such as: polyurethane enameled wire (direct solderability), self-adhesive enameled wire, etc.

According to the conductor material: copper wire, aluminum wire, alloy wire.

Divided by material shape: round wire, flat wire, hollow wire.

According to the insulation thickness: thin paint film line, thick paint film line and thick paint film line.

The enamelled magnet wire used in the motor winding requires that the internal conductor not only have good electrical conductivity, but also have good insulation performance, both of which are indispensable, and the existing products are difficult to meet.

Utility model content

In view of the above defects, the technical problem solved by the utility model is to provide an enameled magnet wire for motor winding, which not only has good electrical conductivity and insulation performance, but also saves cost.

In order to solve the above technical problems, the enamelled magnet wire for motor winding provided by the utility model includes an inner conductor and an insulating layer compounded on the outer surface of the inner conductor; wherein, the inner conductor includes a pair of twisted-pair conductors, each pair The stranded wire includes an aluminum-zirconium alloy core and a copper-plated layer, the copper-plated layer is coated on the outer surface of the aluminum-zirconium alloy core; the cross-section of the insulating layer is circular, and the outer surface is coated with a nanometer insulating layer , the thickness of the nanometer insulating layer is 1mm-2.5mm, and a wave-absorbing band for avoiding external electromagnetic wave interference is also provided in the insulating layer.

Preferably, a conductive layer of silver nanowires is provided on the outer wall of the copper plating layer.

Preferably, the material of the nano insulating layer is nano polyimide or nano epoxy resin.

Preferably, the insulating layer is a polyurethane paint layer, a polyester paint layer or a polyesterimide paint layer.

Preferably, the thickness of the insulating layer is 1.5-2.5 mm.

The enamelled electromagnetic wire for motor winding provided by the utility model is coated with a copper-plated layer on the outer surface of the aluminum-zirconium alloy core, so that the inner conductor has excellent electrical conductivity, and its structure is simple, the production cost is low, and it is practical. Higher, the outer wall of the copper plating layer is coated with a silver nanowire conductive layer, which can further improve the conductivity of the inner conductor; in addition, the nano insulating layer has a modification effect on the ordinary insulating layer, and has good aging resistance and corrosion resistance The utility model satisfies the requirement that the enamelled magnet wire used for the motor winding has good electrical conductivity and insulation performance, and at the same time saves costs, and can be applied to the field of continuously variable speed transmission in industries such as metallurgy, mining, coal, textiles, water conservancy, and ships.

Description of drawings

Fig. 1 is a schematic structural view of an enamelled magnet wire for a motor winding in an embodiment of the present invention.

Detailed ways

In order for those skilled in the art to better understand the technical solutions provided by the utility model, the following will be described in conjunction with specific embodiments.

Please refer to FIG. 1 , which is a schematic structural diagram of an enamelled magnet wire for a motor winding in an embodiment of the present invention.

The enamelled magnet wire for motor winding provided by the embodiment of the present invention includes an inner conductor and an insulating layer 30 compounded on the outer surface of the inner conductor; wherein, the inner conductor includes a pair of twisted-pair wires, and each twisted-pair wire includes an aluminum-zirconium alloy The core 10 and the copper-plated layer 20, the copper-plated layer 20 is coated on the outer surface of the aluminum-zirconium alloy core 10; the cross section of the insulating layer 30 is circular, and its outer surface is coated with a nano insulating layer 40, the nano insulating layer 40 The thickness is 1mm-2.5mm, and the insulating layer 30 is also provided with a wave-absorbing band 50 for avoiding external electromagnetic wave interference.

In order to further enhance the conductivity, a conductive layer of silver nanowires may be provided on the outer wall of the copper plating layer 20 .

Concrete, the material of nano-insulation layer 40 is nano-polyimide or nano-epoxy resin; Insulation layer 30 is polyurethane paint layer, polyester paint layer or polyesterimide paint layer, and the thickness of described insulation layer 30 is preferably 1.5～2.5mm.

In summary, the enamelled magnet wire for motor winding provided by the utility model is coated with a copper-plated layer 20 on the outer surface of the aluminum-zirconium alloy core 10, so that the internal conductor has excellent electrical conductivity, and its structure is simple , low manufacturing cost and high practicability, the outer wall of the copper plating layer 20 is coated with a silver nanowire conductive layer, which can further improve the conductivity of the internal conductor; in addition, the nano insulating layer 40 has a modification effect on the common insulating layer 30, It has good aging resistance and corrosion resistance; the utility model satisfies the requirement that the enamelled magnet wire for motor windings has good electrical conductivity and insulation performance, and at the same time saves costs, and can be applied to metallurgy, mining, coal, textiles, water conservancy, and ships. In the field of continuously variable transmission in other industries.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. a motor winding enamel-cover electromagnetic wire, is characterized in that, comprises inner conductor and the insulating barrier being compound in inner conductor outer surface; Wherein, described inner conductor comprises a pair twisted-pair wire, and every root twisted-pair wire comprises aluminium zircaloy core and copper plate, and described copper plate is coated on the outer surface of described aluminium zircaloy core; The cross section of described insulating barrier is circular, and its outer surface has nanometer insulating barrier, and the thickness of described nanometer insulating barrier is 1mm ~ 2.5mm, is also provided with the suction wavestrip for avoiding external electromagnetic wave interference in described insulating barrier.

2. motor winding enamel-cover electromagnetic wire according to claim 1, it is characterized in that, the outer wall of described copper plate is provided with nano silver wire conductive layer.

3. according to the motor winding enamel-cover electromagnetic wire described in claim 1, it is characterized in that, the material of described nanometer insulating barrier is nanometer polyimides or epoxide resin nano.

4. motor winding enamel-cover electromagnetic wire according to claim 1, is characterized in that, described insulating barrier is polyurethane enamelled coating, polyester enamelled coating or polyester-imide enamelled coating.

5. motor winding enamel-cover electromagnetic wire according to claim 4, is characterized in that, the thickness of described insulating barrier is 1.5 ~ 2.5mm.