Graphene silver braided new energy vehicle audio flat wire

Abstract

This utility model discloses a graphene silver braided audio flat cable for new energy vehicles, comprising a core, the core including a cotton core and a first soft conductor spirally wrapped around the outer periphery of the cotton core; at least one layer of a second soft conductor spirally wrapped around the outer periphery of the first soft conductor; the core has two sets of first braided strands and second braided strands respectively, the first braided strand having an even number of first cores, the first cores being horizontally arranged, and a first braiding perforation between adjacent first cores; the second braided strand having an even number of first cores plus one second core, the second cores being horizontally arranged, and a second braiding perforation between adjacent second cores; multiple first cores are interspersed between the second braiding perforations, and multiple second cores are interspersed between the first braiding perforations, the first cores and second cores being interwoven with each other in a flat, twisted structure.

Description

Technical Field

[0001] This utility model relates to the field of audio cables, and in particular to a graphene silver braided audio flat cable for new energy vehicles. Background Technology

[0002] With the development of loudspeakers, the requirements for audio cables are also getting higher and higher. In the application of new energy vehicles, how to shield high-voltage electromagnetic fields is one of the key design considerations. In addition, how to improve the compactness of the wiring, reduce space waste, and improve the ease and consistency of installation are also key design considerations.

[0003] The flat audio cable has a compact structure and is easy to install automatically in new energy vehicles.

[0004] However, existing flat lines have the following shortcomings:

[0005] 1. It is mainly composed of single-strand wires arranged side by side, so its impedance increases accordingly, and its conductive area is relatively small;

[0006] 2. At the same time, the large gap between the wire cores arranged side by side can easily cause resonance at the same frequency. Therefore, how to make the wire cores compact is also a key design issue. Utility Model Content

[0007] The main purpose of this invention is to propose a graphene silver braided audio flat cable for new energy vehicles, which aims to achieve the flattening of the audio cable by adopting a composite core structure and a side-by-side braiding structure.

[0008] To achieve the above objectives, this utility model proposes a graphene silver braided audio flat cable for new energy vehicles, comprising:

[0009] The wire core includes a cotton core and a first soft conductor that is spirally wrapped around and attached to the outer peripheral wall of the cotton core;

[0010] At least one layer of second soft conductor is spirally attached to the outer peripheral wall of the first soft conductor;

[0011] The core wire has two sets of braided strands, including a first braided strand and a second braided strand.

[0012] The first braided strand has an even number of first cores, the first cores are arranged horizontally, and a first braiding perforation is provided between adjacent first cores;

[0013] The second braided strand has an even number of first cores plus one second core. The second cores are arranged horizontally, and a second braiding perforation is provided between adjacent second cores.

[0014] Multiple first cores are spaced apart between the second braided perforations, and multiple second cores are spaced apart between the first braided perforations. The first and second cores are interwoven and form a flat, twisted structure.

[0015] In practical design, this new energy vehicle audio flat cable has the following advantages:

[0016] 1. As a tensile support, it can serve as a better carrier for spirally winding the first and second soft conductors. The spiral winding structure can provide a larger conductive area, thereby reducing high-frequency transmission impedance.

[0017] 2. In addition, the interwoven core and the first and second soft conductors have better bending resistance and tensile strength.

[0018] 3. The outer walls of the first and second soft conductors are provided with insulating layers, which are interwoven to form a composite shielding layer, effectively improving the ability to resist electromagnetic interference;

[0019] 4. The horizontally arranged first and second braided strands achieve a flat audio cable braid, improving the compactness of the audio cable;

[0020] The braided structure forms an electromagnetic shielding mesh (eddy current loss ↓60%); the cotton core + soft conductor can achieve a resistance change rate of <1% after 100,000 bends (resistance to mechanical fatigue), while reducing resonance problems. The gaps are smaller than those of cylindrical wire cores, and the braided structure forms a tensile structure, thereby reducing resonance between wires. Attached Figure Description

[0021] Fig. 1 It consists of 42-strand graphene silver flat wires;

[0022] Fig. 2 This is a schematic diagram of 63 silver flat wires.

[0023] In the picture,

[0024] 1 is the wire core, 11 is the cotton core, 12 is the first soft conductor, and 13 is the second soft conductor.

[0025] 21 is the first braided strand, 22 is the second braided strand, 201 is the first braided perforation, and 202 is the second braided perforation. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] like Figs. 1-2 As shown, a graphene-silver braided audio flat cable for new energy vehicles includes:

[0030] The wire core 1 includes a cotton core 11 and a first soft conductor 12 that is spirally wrapped around the outer peripheral wall of the cotton core 11.

[0031] At least one layer of second soft conductor 13 is spirally attached to the outer peripheral wall of the first soft conductor 12;

[0032] The core 1 has two sets, each consisting of a first braided strand 21 and a second braided strand 22.

[0033] The first braided strand 21 has an even number of first cores, the first cores are arranged horizontally, and a first braiding perforation 201 is provided between adjacent first cores;

[0034] The second braided strand 22 has an even number of first cores and one second core. The second cores are arranged horizontally, and a second braiding perforation 202 is provided between adjacent second cores.

[0035] Multiple first cores are spaced apart between the second braiding perforations 202, and multiple second cores are spaced apart between the first braiding perforations 201. The first cores and second cores are interwoven and form a flat, twisted structure.

[0036] In practical design, this new energy vehicle audio flat cable has the following advantages:

[0037] 1. As a tensile support, it can serve as a better carrier for spirally winding the first soft conductor 12 and the second soft conductor 13. The spiral winding structure can provide a larger conductive area, thereby reducing the high-frequency transmission impedance.

[0038] 2. In addition, the interwoven core 1, the first soft conductor 12, and the second soft conductor 13 have better bending resistance and tensile strength.

[0039] 3. The outer walls of the first soft conductor 12 and the second soft conductor 13 are provided with insulating layers, which are interwoven to form a composite shielding layer, effectively improving the ability to resist electromagnetic interference;

[0040] 4. The horizontally arranged first braided strand 21 and second braided strand 22 achieve a flat audio cable braid, improving the compactness of the audio cable;

[0041] The braided structure forms an electromagnetic shielding mesh (eddy current loss ↓60%); the cotton core 11 + soft conductor can achieve a resistance change rate of <1% after 100,000 bends (resistance to mechanical fatigue), while reducing resonance problems. The gap is smaller than that of the cylindrical wire core 1, and they are woven together to form a tensile structure, thereby reducing resonance between the wires.

[0042] The essential design can be understood as reducing resistance and improving shielding while meeting automotive-grade design requirements.

[0043] Specifically, the first braided strand 21 has ten strands, and the second braided strand 22 has eleven strands.

[0044] In this embodiment of the invention, the first soft conductor 12 and the second soft conductor 13 are silver-plated graphene copper materials.

[0045] In practical applications, graphene copper is a composite material with ultra-high conductivity, developed by combining graphene and copper. It is formed by fusing a certain proportion of graphene with copper during the refining process, creating a new, indivisible composite superconductor. Graphene copper has extremely low resistance and very high conductivity, 10% faster than silver, making it an ideal conductor material for audio cables.

[0046] Finally, a silver layer is added to the outer periphery of the graphene copper, which further improves the electromagnetic interference resistance of audio transmission.

[0047] Silver doesn't have good fatigue resistance (meaning it's easily broken), so the silver wires we commonly see are actually just silver-plated wires. They look shiny, but they're actually made of oxygen-free copper or single-crystal copper. This has another advantage for audio signal transmission: due to the skin effect, high-frequency signals are transmitted through the surface layer, which is better suited for high-frequency transmission, while mid- and low-frequency signals are transmitted through the copper layer. This compensates for some of the limitations of silver in transmitting mid- and low-frequency signals.

[0048] Specifically, when the first soft conductor 12 has one layer and the second soft conductor 13 has two layers, the first soft conductor 12 and the second soft conductor 13 are made of silver-plated tin-copper material, wherein the silver plating can ensure high-frequency signal transmission and also serve as a good shielding layer.

[0049] In this embodiment of the invention, the first soft conductor 12 or the second soft conductor 13 is wound around the cotton core 11 at a helix angle of 75°±5°. This provides the maximum contact area, and the tension during winding is controlled at 0.5 to 0.8 N, which ensures winding efficiency while preventing the soft metal from breaking.

[0050] Specifically, the sum of the first soft conductor 12 and the second soft conductor 13 is 42 strands, i.e., 21*2.

[0051] In this embodiment of the invention, the sum of the first soft conductor 12 and the two layers of second soft conductors 13 is 63 strands, i.e., 21*3.

[0052] In this embodiment of the utility model, the first braided strand 21 and the second braided strand 22 are braided by a braiding machine at a cross angle of 45°±5° to reduce the thickness of the flat wire while ensuring structural compactness. Specifically, the outer peripheral wall of the flat wire can be provided with an insulating layer or insulating varnish, thereby making it a main body of audio signal.

[0053] Specifically, the first soft conductor 12 and the second soft conductor 13 are flat wires.

[0054] In this embodiment of the invention, the diameter of the cotton core 11 is 0.5–1.2 mm, reducing the installation space occupied by 51%, and reducing the required conductive area from 12 mm. 2 Reduced to 5.8mm 2 .

[0055] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A graphene-silver braided audio flat cable for new energy vehicles, characterized in that, include: The wire core includes a cotton core and a first soft conductor that is spirally wrapped around and attached to the outer peripheral wall of the cotton core; At least one layer of second soft conductor is spirally attached to the outer peripheral wall of the first soft conductor; The core wire has two sets of braided strands, including a first braided strand and a second braided strand. The first braided strand has an even number of first cores, the first cores are arranged horizontally, and a first braiding perforation is provided between adjacent first cores; The second braided strand has an even number of first cores plus one second core. The second cores are arranged horizontally, and a second braiding perforation is provided between adjacent second cores. Multiple first cores are spaced apart between the second braided perforations, and multiple second cores are spaced apart between the first braided perforations. The first and second cores are interwoven and form a flat, twisted structure.

2. The graphene silver braided audio flat cable for new energy vehicles as described in claim 1, characterized in that: The first braided strand has ten strands, and the second braided strand has eleven strands.

3. The graphene silver braided audio flat cable for new energy vehicles as described in claim 2, characterized in that: The first soft conductor and the second soft conductor are silver-plated graphene copper materials.

4. The graphene silver braided audio flat cable for new energy vehicles as described in claim 2, characterized in that: When the first soft conductor has one layer and the second soft conductor has two layers, the first soft conductor and the second soft conductor are made of silver-plated tin-copper material.

5. The graphene silver braided audio flat cable for new energy vehicles as described in claim 1, characterized in that: The first or second soft conductor is wound around the cotton core with a helix angle of 75°±5°.

6. The graphene silver braided audio flat cable for new energy vehicles as described in claim 3, characterized in that: The sum of the first soft conductor and the second soft conductor is 42 strands.

7. The graphene silver braided audio flat cable for new energy vehicles as described in claim 4, characterized in that: The sum of the first soft conductor and the two layers of the second soft conductor is 63 strands.

8. The graphene silver braided audio flat cable for new energy vehicles as described in claim 4, characterized in that: The first and second braided strands are braided using a braiding machine at a cross angle of 45°±5°.

9. The graphene-silver braided audio flat cable for new energy vehicles as described in claim 1, characterized in that: The first and second soft conductors are flat wires.

10. The graphene silver braided audio flat cable for new energy vehicles as described in claim 1, characterized in that: The diameter of the cotton core is 0.5 to 1.2 mm.

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