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Corona-resistant high-PDIV enameled copper flat wire for 800V driving motor and method

A drive motor, 1.800V technology, applied in the direction of circuits, electrical components, insulated cables, etc., can solve the problems of low corona resistance life, poor economic practicability, short service life, etc., achieve good adhesion and prevent excessive curing speed Fast, the effect of repairing layer defects

Pending Publication Date: 2022-05-06
沈阳宏远电磁线股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the defects of thin enamelled copper flat wire in the prior art, low corona resistance life, low PDIV, easy to fall off after thickening, short service life, high cost, and poor economical practicability, the present invention provides an 800V Corona-resistant high PDIV enamelled copper flat wire for driving motors and its method, using multiple processes to prepare composite layer paint to firmly cover copper flat wire, and it is not easy to fall off when the paint film thickness is large. The corona layer and 5-8 PDIV reinforcement layers can achieve the corona resistance and PDIV performance of 800V motors, and the cost is low, economical and applicable, and has good market value

Method used

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  • Corona-resistant high-PDIV enameled copper flat wire for 800V driving motor and method
  • Corona-resistant high-PDIV enameled copper flat wire for 800V driving motor and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Corona resistant high PDIV enamelled copper flat wire for 800V drive motor, such as figure 1 and 2 As shown, the enamelled copper flat wire includes copper flat wire 1 and paint film 2, and paint film 2 includes primer layer 2.1, middle paint layer I2.2, middle paint layer II2.3, top paint layer 2.4; The thickness is 0.29mm;

[0047] The thickness of the primer layer 2.1 is 0.02mm; the thickness of the middle paint layer I2.2 is 0.15mm, the thickness of the middle paint layer II2.3 is 0.05mm; the thickness of the top coat layer 2.4 is 0.07mm;

[0048] Primer layer 2.1 is polyimide paint, model HI-409-2803;

[0049] The middle paint layer I2.2 is a corona-resistant paint, and the mass parts of the raw material components of the corona-resistant paint are: 35 parts of xylene, 20 parts of polyethylene wax, tris (2-hydroxyethyl) isocyanurate 15 parts, 10 parts of nano glass powder, 25 parts of phenol, 15 parts of 4,4'-diphenylmethane diisocyanate, 15 parts of N-methyl-2-...

Embodiment 2

[0071] Corona resistant high PDIV enamelled copper flat wire for 800V drive motor, such as figure 1 and 2 As shown, the enamelled copper flat wire includes copper flat wire 1 and paint film 2, and paint film 2 includes primer layer 2.1, middle paint layer I2.2, middle paint layer II2.3, top paint layer 2.4; The thickness is 0.28mm;

[0072] The thickness of the primer layer 2.1 is 0.02mm; the thickness of the middle paint layer I2.2 is 0.15mm, the thickness of the middle paint layer II2.3 is 0.05mm; the thickness of the top coat layer 2.4 is 0.06mm;

[0073] Primer layer 2.1 is polyimide paint, model HI-409-2803;

[0074] The middle paint layer Ⅰ2.2 is a corona-resistant paint, and the mass parts of the raw material components of the corona-resistant paint are: 40 parts of xylene, 30 parts of polyethylene wax, tris (2-hydroxyethyl) isocyanurate 18 parts, 20 parts of nano glass powder, 30 parts of phenol, 16 parts of 4,4'-diphenylmethane diisocyanate, 18 parts of N-methyl-2-...

Embodiment 3

[0096] Corona resistant high PDIV enamelled copper flat wire for 800V drive motor, such as figure 1 and 2 As shown, the enamelled copper flat wire includes copper flat wire 1 and paint film 2, and paint film 2 includes primer layer 2.1, middle paint layer I2.2, middle paint layer II2.3, top paint layer 2.4; The thickness is 0.30mm;

[0097] The thickness of the primer layer 2.1 is 0.03mm; the thickness of the middle paint layer I2.2 is 0.16mm, the thickness of the middle paint layer II2.3 is 0.05mm; the thickness of the top coat layer 2.4 is 0.06mm;

[0098] Primer layer 2.1 is polyimide paint, model HI-409-2803;

[0099] The middle paint layer I2.2 is a corona-resistant paint, and the mass parts of the raw material components of the corona-resistant paint are: 38 parts of xylene, 25 parts of polyethylene wax, tris (2-hydroxyethyl) isocyanurate 17 parts, 15 parts of nano glass powder, 28 parts of phenol, 16 parts of 4,4'-diphenylmethane diisocyanate, 17 parts of N-methyl-2-...

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Abstract

The invention discloses a corona-resistant high-PDIV enameled copper flat wire for an 800V driving motor and a method, and belongs to the technical field of new energy automobile motor winding wires, the enameled copper flat wire comprises a copper flat wire and a paint film, and the paint film comprises a primer layer, a middle paint layer I, a middle paint layer II and a finish paint layer; and the total thickness of the paint film is 0.28-0.30 mm. The preparation method comprises the following steps: coating the primer twice, coating the intermediate paint 22-23 times and coating the finish paint 6 times. According to the invention, a plurality of processes are adopted to prepare the composite layer paint for firmly coating the copper flat wire, the problem that a large-thickness paint film is easy to crack and fall off during use is solved, and the composite layer paint has the advantages of good stability, high temperature resistance, uniform paint film, good corona resistance, high PDIV and good industrialization realizability, and can be used for a high-load and high-power 800V motor of a new energy automobile. The corona resistance is more than 300h, the PDIV is more than 1500V, and the market prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of new energy automobile motor winding wires, and in particular relates to a high corona resistance and high PDIV enamelled copper flat wire for use in an 800V high-efficiency drive motor of a new energy automobile and a painting method thereof. Background technique [0002] New energy vehicles refer to vehicles that use batteries as the power source, and the drive motor converts electrical energy into mechanical energy that drives the vehicle. When an electric vehicle starts and accelerates rapidly, a strong corona is generated on the copper wire, so special winding wires that can withstand high current and high pulse voltage are required. [0003] Existing corona resistance technology usually adopts the method of wrapping composite mica tape to increase corona resistance performance, improve the withstand voltage capability, or increase inter-turn insulation in the winding process. Due to the increase in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/08H01B7/02H01B7/29H01B7/28
CPCH01B7/08H01B7/0861H01B7/02H01B7/29H01B7/28
Inventor 杨绪清杨立山
Owner 沈阳宏远电磁线股份有限公司
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