Multi-layer film-coated high-frequency litz wire

Abstract

The utility model relates to the technical field of cables, and discloses a multilayer film-coated high-frequency litz wire, which comprises a protective layer, a wire body is arranged in the protective layer, the outer wall of the wire body is fixedly connected with a primary insulating layer, the outer wall of the primary insulating layer is fixedly connected with a thermal stability layer, and the outer wall of the thermal stability layer is fixedly connected with a shielding layer. The outer wall of the shielding layer is fixedly connected with a first protection layer, a core body is arranged in the wire body, the outer wall of the core body is fixedly connected with an anti-impact layer, and the outer wall of the anti-impact layer is fixedly connected with a heat conduction layer. According to the utility model, the protection layer comprises the first protection layer, the shielding layer, the thermal stability layer and the primary insulation layer, the primary insulation layer is made of polyester, basic electrical insulation is provided, mutual current interference among different conductors is prevented, the effect of improving heat dissipation of the litz wire is achieved, and the problems that a traditional litz wire in high-frequency and high-power equipment is large in heat dissipation requirement and poor in heat dissipation performance are solved. Therefore, the heat dissipation performance of the high-frequency litz wire is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to multilayer film package high frequency litz wire. BACKGROUND

[0002] High frequency litz wire is a kind of wire specially designed for transmitting high-frequency current, its structure adopts multiple small insulated copper wires (each wire is independently insulated) and is stranded together. The design purpose of litz wire is to reduce the energy loss caused by skin effect and proximity effect in high-frequency current transmission, so as to improve the current transmission efficiency of the wire in high-frequency environment. Under high-voltage or high-frequency current conditions, single-layer insulation may not be able to completely block the electromagnetic interference between adjacent wires, so multilayer film package high frequency litz wire is needed, which can provide additional electrical isolation, reduce the risk of leakage between adjacent conductors and improve overall insulation effect.

[0003] Litz wire can be divided into several types, including basic litz wire, composite litz wire and multilayer film package litz wire. The selection of appropriate type of high frequency litz wire needs to be determined according to application environment, frequency, current intensity and other factors to ensure stable performance and prolong service life. Multilayer film package litz wire is wrapped by multiple layers of insulation film to improve insulation strength and anti-interference performance, and is commonly used in high-voltage or special high-frequency equipment.

[0004] However, the existing traditional litz wire has the problem of limited heat dissipation effect when applied to high-frequency high-power equipment, which not only affects the electrical performance of litz wire, but also brings challenges to its service life. Therefore, the problem of limited heat dissipation effect of traditional litz wire in high-frequency high-power equipment needs to be improved. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a multilayer film package high frequency litz wire, which aims to improve the problem of large heat dissipation demand and easy heat generation of cable in traditional litz wire in high-frequency high-power equipment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a multilayer film package high frequency litz wire, comprising a protective layer, the protective layer is internally provided with a wire body, the outer wall of the wire body is fixedly connected with a primary insulation layer, the outer wall of the primary insulation layer is fixedly connected with a thermal stability layer, the outer wall of the thermal stability layer is fixedly connected with a shielding layer, and the outer wall of the shielding layer is fixedly connected with a protective layer one.

[0007] Further description of the above technical scheme:

[0008] The wire body is internally provided with a core, and the outer wall of the core is fixedly connected with an impact-resistant layer.

[0009] As a further description of the above technical solutions:

[0010] The outer wall of the impact-resistant layer is fixedly connected with a heat-conducting layer, and the outer wall of the heat-conducting layer is fixedly connected with a protective layer two.

[0011] As a further description of the above technical solutions:

[0012] The core body is internally provided with a plurality of copper cores, and the diameter of the copper core is 0.5-2mm.

[0013] As a further description of the above technical solutions:

[0014] The core body is spirally interlaced and arranged in the wire body.

[0015] As a further description of the above technical solutions:

[0016] The protective layer is composed of a protective layer one, a shielding layer, a thermal stability layer and a primary insulation layer.

[0017] As a further description of the above technical solutions:

[0018] The wire body is composed of a protective layer two, an impact-resistant layer and a heat-conducting layer.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1. In the utility model, the protective layer includes a protective layer one, a shielding layer, a thermal stability layer and a primary insulation layer, the heat-conducting layer is a thermal polymer, which helps to quickly dissipate heat, improves the heat dissipation of the litz wire, solves the problem of large heat dissipation demand of the traditional litz wire in high-frequency high-power equipment, and improves the heat dissipation of the high-frequency litz wire.

[0021] 2. In the utility model, the protective layer is internally provided with a plurality of wire bodies, and the wire body is internally provided with a plurality of core bodies, each of which is internally provided with a plurality of copper cores with a diameter of 0.5-2mm, so that the core bodies in the wire body are spirally interlaced and arranged, which improves the durability of the litz wire, solves the problem of uneven tension distribution and easy fatigue damage of the litz wire when bending, and improves the practicability of the litz wire. DRAWINGS

[0022] Figure 1 The utility model provides a cross-sectional view of a high-frequency litz wire wrapped with a multilayer film.

[0023] Figure 2 The utility model provides a primary insulation layer structure schematic view of a high-frequency litz wire wrapped with a multilayer film.

[0024] Figure 3The utility model provides a high frequency litz wire of multilayer film package's wire body cross section schematic drawing.

[0025] Figure 4 The utility model provides a core body cross section schematic drawing of high frequency litz wire of multilayer film package.

[0026] Legend:

[0027] 1, protective layer, 2, protective layer one, 3, shielding layer, 4, thermal stability layer, 5, primary insulation layer, 6, wire body, 7, protective layer two, 8, impact resistance layer, 9, core body, 10, copper core, 11, heat conduction layer. Specific implementation

[0028] The utility model discloses an embodiment will be clearly and completely described below in the embodiment of the utility model to the technical scheme in the embodiment of the utility model, obviously, the described embodiment only is a part of embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making creative labor belong to the range of protection of the utility model.

[0029] Reference Figure 1 And Figure 2 An embodiment provided by the utility model: high frequency litz wire of multilayer film package, including protective layer 1, protective layer 1 provides the overall protection of wire body 6, prevents the direct damage of external environment to wire body 6, enhances the durability of wire rod. Protective layer 1 is provided with wire body 6 in the inside, and wire body 6 bears the conduction effect of electric current. Wire body 6 outer wall is fixedly connected with primary insulation layer 5, and primary insulation layer 5 is polyester material, provides basic electrical insulation function, effectively avoids the current interference between different conductors. The outer wall of primary insulation layer 5 is fixedly connected with thermal stability layer 4, and thermal stability layer 4 is polytetrafluoroethylene material, provides thermal stability under high temperature environment, enhances the heat resistance of litz wire under high frequency high power working condition, prolongs the service life of wire rod. The outer wall of thermal stability layer 4 is fixedly connected with shielding layer 3, and shielding layer 3 is woven by silver-plated copper wire, has electromagnetic shielding effect, reduces electromagnetic radiation interference, thereby improves the anti-interference ability of litz wire, prevents the influence of external electromagnetic environment on signal. The outer wall of shielding layer 3 is fixedly connected with protective layer one 2, and protective layer one 2 is fluoroplastic material, enhances the wear resistance of litz wire outer layer, can prevent wear and tear in long-term use, effectively prolongs the service life of wire rod. Wire body 6 is provided with core body 9 in the inside, and core body 9 is the core component of current conduction, ensures that wire body 6 has good conductivity. The outer wall of core body 9 is fixedly connected with impact resistance layer 8, and impact resistance layer 8 is made of polyurethane material, increases the impact resistance of wire rod, effectively avoids the damage of mechanical impact in equipment operation or handling to wire body 6;

[0030] Specifically, the design structure of the protective layer 1 is hierarchical, including the protective layer one 2, the shielding layer 3, the thermal stability layer 4 and the primary insulation layer 5. The multi-layer protective structure ensures the reliability and durability of the Litz wire in various harsh environments. The primary insulation layer 5 is made of polyester material, which provides basic electrical insulation protection, prevents current interference between different conductors, and ensures the purity and stability of signal transmission. The thermal stability layer 4 is made of polytetrafluoroethylene material, which has excellent high-temperature resistance, significantly enhancing the stability of the Litz wire in high-temperature environments, thereby prolonging its service life. The shielding layer 3 is woven from silver-plated copper wire, effectively reducing the interference caused by electromagnetic radiation, making the wire body 6 have stronger anti-interference ability, avoiding the influence of surrounding equipment or lines on the signal. The outermost protective layer one 2 is made of high-wear-resistant fluoroplastic, further improving the outer wear resistance of the Litz wire, preventing it from affecting performance due to wear and tear in long-term use. The multi-layer structure design makes the Litz wire not only have excellent signal transmission capability, but also has the excellent characteristics of durability and anti-interference.

[0031] With reference to Figure 3 and Figure 4 , the outer wall of the impact-resistant layer 8 is fixedly connected with the heat-conducting layer 11, which is a thermal polymer material, helping the Litz wire to quickly dissipate heat during high-frequency operation, avoiding the problem of performance degradation caused by high temperature inside the cable, and ensuring the long-term stable operation of the cable. The outer wall of the heat-conducting layer 11 is fixedly connected with the protective layer two 7, which is made of wear-resistant silicone rubber material, providing an effective protection for the outside of the wire body 6, preventing it from being worn and torn during use, and improving the durability of the wire. A plurality of copper cores 10 are arranged inside the core 9, and the diameter of the copper core 10 is 0.5-2mm, which can provide stable conductivity and ensure efficient current transmission. The core 9 is arranged in a spiral interlaced manner inside the wire body 6, which realizes uniform tension distribution and effectively enhances the tensile strength, while reducing the fatigue damage phenomenon of the copper core 10 caused by uneven stress. The protective layer 1 is composed of the protective layer one 2, the shielding layer 3, the thermal stability layer 4 and the primary insulation layer 5, which provides complete external protection and electromagnetic interference protection effect. The wire body 6 is composed of the protective layer two 7, the impact-resistant layer 8 and the heat-conducting layer 11, which ensures that the wire body 6 has excellent performance in heat conduction, impact resistance and external protection, meeting the use requirements of high-frequency Litz wire in complex working environments;

[0032] Specifically, the inner part of the protective layer 1 includes a plurality of wire bodies 6, each of which is internally woven by a plurality of core bodies 9, and each of the core bodies 9 is composed of hundreds of copper cores 10 with a diameter of 0.5-2 mm arranged closely. The core bodies 9 are arranged in a spiral interlaced manner in the wire body 6, which not only provides uniform tension distribution but also adds additional mechanical support, thereby significantly improving the tear resistance and fatigue resistance of the wire body 6. The inner part of the wire body 6 further includes multiple layers of functional materials: an impact-resistant layer 8, a heat-conducting layer 11, and a protective layer two 7. The impact-resistant layer 8 is composed of high-strength polyurethane material, which can significantly improve the impact resistance of the wire body 6 under external force; the heat-conducting layer 11 is composed of thermal polymer material, which can effectively help the wire body 6 to dissipate heat quickly and prevent high-temperature accumulation; and the protective layer two 7 is made of silicone rubber with excellent wear resistance, which plays a role in protecting the surface of the wire body 6 and prolonging its service life. This multi-layer design ensures the reliability and durability of the wire body 6 in high-frequency and high-strength applications.

[0033] Working principle: when the multi-layer film is used to wrap the high-frequency Litz wire, the inner part of the protective layer 1 is provided with a plurality of wire bodies 6, wherein the inner part of the wire body 6 is provided with a plurality of core bodies 9 woven, and each of the core bodies 9 is composed of hundreds of copper cores 10 with a diameter of 0.5-2 mm, so that the core bodies 9 in the wire body 6 are arranged in a spiral interlaced manner, providing uniform tension distribution and additional mechanical support, increasing the tear resistance and fatigue resistance, and the inner part of the wire body 6 includes an impact-resistant layer 8, a heat-conducting layer 11 and a protective layer two 7, the impact-resistant layer 8 is polyurethane to improve the impact resistance, the heat-conducting layer 11 is a thermal polymer to help dissipate heat quickly, and the protective layer two 7 is silicone rubber to improve wear resistance, the protective layer 1 includes a protective layer one 2, a shielding layer 3, a thermal stability layer 4 and a primary insulation layer 5, the primary insulation layer 5 is polyester to provide basic electrical insulation and prevent current between different conductors from interfering with each other, the thermal stability layer 4 is polytetrafluoroethylene to enhance the stability of the Litz wire in a high-temperature environment and prolong the working life of the wire, the shielding layer 3 is a silver-plated copper wire braid layer to reduce electromagnetic radiation interference and improve anti-interference ability, avoid the influence of surrounding equipment or lines on the signal, and the protective layer one 2 is fluoroplastic to enhance the wear resistance of the outer layer of the Litz wire and prevent wear during long-term use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high frequency litz wire wrapped with a multilayer film comprising a protective layer (1), characterized in that: The protective layer (1) is internally provided with a wire body (6), the outer wall of the wire body (6) is fixedly connected with a primary insulation layer (5), the outer wall of the primary insulation layer (5) is fixedly connected with a thermal stability layer (4), the outer wall of the thermal stability layer (4) is fixedly connected with a shielding layer (3), and the outer wall of the shielding layer (3) is fixedly connected with a protection layer one (2).

2. The multi-layer film wrapped high frequency Litz wire of claim 1, wherein: The wire body (6) is internally provided with a core body (9), and the outer wall of the core body (9) is fixedly connected with an impact resistance layer (8).

3. The multi-layer film wrapped high frequency Litz wire of claim 2, wherein: The outer wall of the impact resistance layer (8) is fixedly connected with a heat conduction layer (11), and the outer wall of the heat conduction layer (11) is fixedly connected with a protection layer two (7).

4. The multi-layer film wrapped high frequency Litz wire of claim 2, wherein: The core body (9) is internally provided with a plurality of copper cores (10), and the diameter of the copper core (10) is 0.5-2mm.

5. The multi-layer film wrapped high frequency Litz wire of claim 2, wherein: The core body (9) is spirally interwoven and arranged in the wire body (6).

6. The multi-layer film wrapped high frequency Litz wire of claim 1, wherein: The protective layer (1) is composed of the protection layer one (2), the shielding layer (3), the thermal stability layer (4) and the primary insulation layer (5).

7. The multi-layer film wrapped high frequency Litz wire of claim 1, wherein: The wire body (6) is composed of the protection layer two (7), the impact resistance layer (8) and the heat conduction layer (11).

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