Ceramic multiplied corona-resistant electromagnetic wire for high-power traction motor system

Abstract

The utility model discloses a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system, which relates to the technical field of electromagnetic wires and comprises a metal conductor, the metal conductor is arranged inside an insulating layer, a ceramic coating is coated on the outer layer of the insulating layer, a protective layer is arranged on the outer layer of the ceramic coating, and the protective layer is coated on the outer layer of the metal conductor. According to the ceramic multiplication corona-resistant electromagnetic wire for the high-power traction motor system, the problem that the ceramic multiplication corona resistance of the electromagnetic wire is reduced due to the facts that the surface of the existing ceramic multiplication corona-resistant electromagnetic wire for the high-power traction motor system is abraded and falls off and the external coating is abraded and damaged in the winding process is solved; according to the utility model, through the matching arrangement of the PI enameled wire and the polyimide film in the paint layer, the electric strength can be improved, so that the surface of the electromagnetic wire is not easy to wear and fall off in the use and winding process, and the ceramic multiplication corona resistance of the electromagnetic wire is prevented from being reduced due to the wear and damage of the external coating; and the corona resistance of the electromagnetic wire can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic wires, in particular to a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system. Background Art

[0002] Ceramic multiplied corona-resistant electromagnetic wire for high-power traction motor system is mainly used to improve the reliability and stability of high-power traction motor system.

[0003] A high-temperature resistant electromagnetic wire with publication number CN220106085U comprises an electromagnetic sleeve, one end of the electromagnetic sleeve is sleeved with a fixed sleeve shell, the front end face of the fixed sleeve shell is penetrated with an electromagnetic plug through a cavity, one side of the fixed sleeve shell is fixedly connected with a first fixed block, the upper end face of the first fixed block is threadedly penetrated with a fixing bolt, the outer side wall of the fixing bolt is threadedly connected with a second fixed block at one end away from the first fixed block, the front end face of the fixed sleeve shell is fixedly connected with a third clamping block, the inner side wall of the third clamping block is provided with a second clamping groove, the inner side wall of the second clamping groove is slidably connected with a threaded opening, and the end of the fixed sleeve shell away from the third clamping block is fixedly connected with an extension ring. This electromagnetic wire has the functions of high-temperature wear resistance and longer service life, and it also has the function of a detachable interface for easy maintenance. The existing ceramic multiplied corona-resistant electromagnetic wire for high-power traction motor system is prone to surface wear and falling off during use and winding, affecting the ceramic multiplied corona resistance, the electromagnetic wire connection is broken and the insulation is poor, the external coating is worn and damaged, resulting in a decrease in the ceramic multiplied corona resistance of the electromagnetic wire.

[0004] In view of the above problems, a ceramic corona-resistant electromagnetic wire for a high-power traction motor system is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system, which solves the problem that the existing ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system in the background technology is prone to surface wear and fall during the winding process, affecting the ceramic multiplied corona resistance, the electromagnetic wire connection is broken and the insulation is poor, the external coating is worn and damaged, resulting in a decrease in the ceramic multiplied corona resistance of the electromagnetic wire.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system, comprising a metal conductor for conducting electricity, wherein the metal conductor is arranged inside an insulating layer, wherein the insulating layer is used for insulation, and the outer layer of the insulating layer is coated with a ceramic coating for improving the corona resistance of the electromagnetic wire, wherein the outer layer of the ceramic coating is provided with a protective layer for flame retardancy and wear resistance, wherein the outer layer of the protective layer is sintered with a paint layer for impact resistance, wherein the paint layer comprises a PI enameled wire and a polyimide film which are tightly combined with each other, wherein the polyimide film is arranged on the outer surface, and the ceramic coating is evenly coated using a silicon carbide material using a multi-layer coating process.

[0007] Preferably, the metal conductor is arranged in the innermost layer and is made of copper material.

[0008] Preferably, the insulating layer is made of polymer material epoxy resin.

[0009] Preferably, the ceramic coating is made of silicon carbide, a ceramic material with high corona resistance, and is stacked through a multi-layer coating process.

[0010] Preferably, the ceramic coating is stacked from the inside out with a bottom layer, a middle layer and a top layer.

[0011] Preferably, the inner layer of the protective layer is provided with a flame retardant layer.

[0012] Preferably, the outer layer of the protective layer is provided with a wear-resistant layer, the flame-retardant layer and the wear-resistant layer are provided in a composite form, and the wear-resistant layer is made of a polymer material polyurethane having wear-resistant properties.

[0013] Preferably, the PI enameled wire and the polyimide film are connected by sintering each other.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system. The combination of PI enameled wire and polyimide film in the paint layer can improve the electrical strength, so that the surface of the electromagnetic wire is not easily worn and peeled off during winding, and the wear and damage of the external coating causes the ceramic multiplied corona resistance of the electromagnetic wire to decrease. This solves the problem that the existing ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system has poor insulation at the connection and wear and damage of the external coating, causing the ceramic multiplied corona resistance of the electromagnetic wire to decrease.

[0016] 2. The utility model provides a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system. The multi-layer coating process of the ceramic coating can effectively improve the corona resistance of the electromagnetic wire, thereby solving the problem that the surface of the existing ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system is easily worn and peeled off during the winding process, thus affecting the ceramic multiplied corona resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0019] Figure 3 It is a schematic diagram of the layered structure of the ceramic coating of the utility model;

[0020] Figure 4 This is a schematic diagram of the layered structure of the protective layer of the utility model.

[0021] In the figure: 1. Metal conductor; 2. Insulating layer; 3. Ceramic coating; 301. Bottom layer; 302. Middle layer; 303. Top layer; 4. Protective layer; 401. Flame retardant layer; 402. Wear-resistant layer; 5. Paint layer; 501. PI enameled wire; 502. Polyimide film. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0024] Combination Figure 1 The utility model discloses a ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system, comprising a metal conductor 1 for conducting electricity, the metal conductor 1 being arranged inside an insulating layer 2, the insulating layer 2 being used for insulation, the outer layer of the insulating layer 2 being coated with a ceramic coating 3 for improving the corona resistance of the electromagnetic wire, the outer layer of the ceramic coating 3 being provided with a protective layer 4 for flame retardancy and wear resistance, the outer layer of the protective layer 4 being sintered with a paint layer 5 for impact resistance, the paint layer 5 comprising a PI enameled wire 501 and a polyimide film 502 which are tightly combined with each other, the polyimide film 502 being arranged on the outer surface, and the ceramic coating 3 being evenly coated using a silicon carbide material using a multi-layer coating process.

[0025] Specifically, this high-power traction motor system uses a multi-layer structure of ceramic multiplied corona-resistant electromagnetic wires that are combined with each other. The multi-layer coating of the ceramic coating 3 can effectively improve the corona resistance of the electromagnetic wire. The combination of the PI enameled wire 501 and the polyimide film 502 can enhance the electrical strength, making it less likely for the surface of the electromagnetic wire to wear and fall off during winding, thereby preventing the external coating from being worn and damaged, thereby reducing the ceramic multiplied corona resistance of the electromagnetic wire.

[0026] The utility model is further described below in conjunction with embodiments.

[0027] Embodiment 1:

[0028] Combination Figure 2 and Figure 3 The metal conductor 1 is arranged in the innermost layer and is made of copper material. The metal conductor 1 adopts copper, a metal material with excellent conductivity, and is responsible for the transmission of current. It needs to have good conductivity and mechanical strength to ensure the stability and reliability of the electromagnetic wire.

[0029] The insulating layer 2 is made of a polymer material epoxy resin. The epoxy resin material used in the insulating layer 2 can isolate the metal conductor 1 and the ceramic coating 3 to prevent the two from making direct contact, and at the same time needs to have good heat resistance and corrosion resistance.

[0030] The ceramic coating 3 is made of silicon carbide, a ceramic material with high corona resistance, and is formed by a multi-layer coating process. The ceramic coating 3 is the key to improving the corona resistance of the electromagnetic wire. The ceramic material silicon carbide is evenly coated on the surface of the insulating layer 2 through a multi-layer coating process, which can effectively improve the corona resistance of the electromagnetic wire.

[0031] The ceramic coating 3 is stacked from the inside out with a bottom layer 301, a middle layer 302 and a top layer 303. The multi-layer coating process of the ceramic coating 3 requires surface treatment of the insulating layer 2, coating of the bottom layer 301, curing, coating of the middle layer 302, curing, coating of the top layer 303, curing, and finally inspection and trimming in sequence.

[0032] Embodiment 2:

[0033] Combination Figure 2 and Figure 4 The inner layer of the protective layer 4 is provided with a flame retardant layer 401. The flame retardant layer 401 is mainly used to prevent the electromagnetic wire from burning when encountering a fire. The flame retardant layer 401 is made of materials with flame retardant properties, such as halogen-containing polymers or organic compounds containing elements such as phosphorus and nitrogen. The flame retardant layer 401 can improve the fire resistance of the electromagnetic wire and protect the cable from burning easily in a fire.

[0034] The outer layer of the protective layer 4 is provided with a wear-resistant layer 402. The flame retardant layer 401 and the wear-resistant layer 402 are arranged in a composite form. The wear-resistant layer 402 is made of a polymer material polyurethane with wear-resistant properties. The wear-resistant layer 402 mainly protects the electromagnetic wire from wear during use. The polymer material polyurethane has good wear resistance and aging resistance.

[0035] The PI enameled wire 501 and the polyimide film 502 are connected by sintering each other. The PI enameled wire 501 plus the polyimide film 502 sintered structure has good product adhesion, flexibility and mechanical impact resistance. Combining the advantages of the enameled wire and the film sintered wire, the PI enameled wire 501 and the polyimide film 502 are tightly combined. In the forming process of the electromagnetic wire, the polyimide film 502 can prevent mechanical damage to the paint film and improve the electrical strength.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system, comprising a metal conductor (1) for conducting electricity, characterized in that: The metal conductor (1) is arranged inside the insulating layer (2), the insulating layer (2) is used for insulation, the outer layer of the insulating layer (2) is coated with a ceramic coating (3) for improving the corona resistance of the electromagnetic wire, the outer layer of the ceramic coating (3) is provided with a protective layer (4) for flame retardancy and wear resistance, and the outer layer of the protective layer (4) is sintered with a paint layer (5) for impact resistance; The lacquer layer (5) comprises a PI enameled wire (501) and a polyimide film (502) which are tightly bonded to each other, the polyimide film (502) being arranged on the outer surface, and the ceramic coating (3) being uniformly coated using a silicon carbide material using a multi-layer coating process.

2. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The metal conductor (1) is arranged in the innermost layer and is made of copper material.

3. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The insulating layer (2) is made of polymer material epoxy resin.

4. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The ceramic coating (3) is made of silicon carbide, a ceramic material with high corona resistance, and is formed by stacking a plurality of layers of coating technology.

5. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The ceramic coating (3) is stacked from the inside out with a bottom layer (301), a middle layer (302) and a top layer (303).

6. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The inner layer of the protective layer (4) is provided with a flame retardant layer (401).

7. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 6, characterized in that: The outer layer of the protective layer (4) is provided with a wear-resistant layer (402), the flame-retardant layer (401) and the wear-resistant layer (402) are provided in a composite form, and the wear-resistant layer (402) is made of a polymer material polyurethane having wear-resistant properties.

8. The ceramic multiplied corona-resistant electromagnetic wire for a high-power traction motor system according to claim 1, characterized in that: The PI enameled wire (501) and the polyimide film (502) are connected by sintering each other.

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