Bare copper stranded wire for sound transmission of new energy automobile

Abstract

The utility model relates to the technical field of electronic accessories, and discloses a bare copper stranded wire for transmission of new energy automobile sound equipment, which comprises a composite conductor layer formed by a central enhancement layer and an outer conductor layer, aramid fibers are embedded in the central enhancement layer, the outer conductor layer comprises a bare copper stranded structure and a silver-plated copper stranded structure, and the bare copper stranded structure and the silver-plated copper stranded structure are arranged on the composite conductor layer. The stranding direction of the bare copper stranding structure is opposite to that of the silver-plated copper stranding structure, the inner side of the bare copper stranding structure wraps the outer side of the silver-plated copper stranding structure, the shielding heat dissipation layer wraps the composite conductor layer, and the shielding heat dissipation layer comprises a metal woven mesh and a heat conduction material filled between the metal woven mesh and the composite conductor layer. And the flexible protection layer wraps the shielding heat dissipation layer. According to the utility model, through the double-metal layered twisting and electromagnetic mutual exclusion structure of the outer conductor layer, low-loss transmission of full-band signals and improvement of tone quality purity are realized, and the high-fidelity audio requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of electronic components technology, and in particular to bare copper stranded wire for audio transmission in new energy vehicles. Background Technology

[0002] In the in-vehicle audio systems of new energy vehicles, stable transmission of high-fidelity audio signals is crucial for user experience. As consumers' demands for in-vehicle Hi-Fi sound quality increase, audio systems need to achieve low-loss transmission of signals across the entire 20Hz–20kHz frequency range, while simultaneously resisting interference from the complex electromagnetic environment inside the vehicle. As a core component for audio signal transmission, the structural design of the wiring directly affects signal quality and system reliability.

[0003] Traditional bare copper stranded wires used in new energy vehicle audio systems typically employ a simple twisting of a single conductor material (such as pure copper or tin-plated copper), which can only meet basic signal transmission needs. While these wires rely on the high conductivity of copper for transmitting low-to-mid-frequency signals, when faced with high-frequency signals above 10kHz, the skin effect causes current to concentrate on the conductor surface, highlighting the limitations of the conductivity of a single copper material and resulting in significant high-frequency signal attenuation (attenuation rate ≥5%). Furthermore, traditional stranded wires lack layered transmission designs for different frequency bands and do not form an effective electromagnetic repulsion structure. External electromagnetic interference (such as EMI generated by motors and inverters) can easily introduce noise through conductor coupling, leading to sound quality distortion (distortion rate >0.1%), failing to meet the high-fidelity audio requirements of high-end audio systems.

[0004] Therefore, to address the aforementioned issues, a solution is proposed: bare copper stranded wire for audio transmission in new energy vehicles. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides bare copper stranded wire for audio transmission in new energy vehicles, aiming to improve the problem that some traditional bare copper stranded wires for new energy vehicle audio systems cannot meet the high-fidelity audio requirements of high-end audio systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Bare copper stranded wire for audio transmission in new energy vehicles includes:

[0008] A composite conductor layer consisting of a central reinforcing layer and an outer conductor layer, wherein the central reinforcing layer is embedded with aramid fibers, and the outer conductor layer includes a bare copper stranded structure and a silver-plated copper stranded structure, wherein the stranding directions of the bare copper stranded structure and the silver-plated copper stranded structure are opposite, and the inner side of the bare copper stranded structure wraps around the outer side of the silver-plated copper stranded structure.

[0009] A shielding and heat dissipation layer encapsulating the composite conductor layer, the shielding and heat dissipation layer comprising a metal braided mesh and a thermally conductive material filled between the metal braided mesh and the composite conductor layer;

[0010] A flexible protective layer that wraps around the shielding and heat dissipation layer, the flexible protective layer comprising an elastic strip spirally wound around the shielding and heat dissipation layer and a waterproof coating applied to the outermost layer;

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

[0012] The bare copper stranded structure and the silver-plated copper stranded structure form an electromagnetic repulsion structure by stranding in opposite directions.

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

[0014] The metal braided mesh is made of copper-nickel alloy, and the thermal conductive material is graphene-based thermal conductive adhesive. The thermal conductive material fills the mesh openings of the metal braided mesh and the gaps between the metal braided mesh and the composite conductor layer.

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

[0016] The elastic strip is made of silicone and is tightly wound in a spiral shape around the outer surface of the shielding and heat dissipation layer, with gaps formed between adjacent spirals. The waterproof coating covers the elastic strip and the gaps.

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

[0018] The aramid fiber extends along the axial direction of the composite conductor layer, and the multiple bare copper wires of the bare copper stranded structure are spirally twisted around the aramid fiber.

[0019] As a further description of the above technical solution:

[0020] A heat-conducting channel is formed between the braiding nodes of the metal braided mesh and the outer surface of the silver-plated copper stranded structure through the heat-conducting material, and the outer surface of the metal braided mesh is in close contact with the inner surface of the elastic strip;

[0021] As a further description of the above technical solution:

[0022] The waterproof coating is a nanoscale coating, which penetrates and solidifies within the spiral gaps of the elastic strip to form a continuous sealing structure;

[0023] As a further description of the above technical solution:

[0024] The flexible protective layer is provided with a rubber shell on its outer side.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, the bimetallic layered twisting and electromagnetic repulsion structure of the outer conductor layer achieves low-loss transmission of signals across the entire frequency band and improves the purity of sound quality, thus meeting the requirements of high-fidelity audio.

[0027] 2. In this utility model, the copper-nickel braided mesh of the shielding heat dissipation layer and the graphene thermal conductive adhesive achieve electromagnetic interference isolation and rapid heat dissipation, ensuring system stability under high power and enhancing reliability.

[0028] 3. In this utility model, the flexible protective layer of silicone spiral strip, nano-coating and rubber shell enhance the flexibility of stranded wire, provide environmental sealing protection, resist harsh working conditions and extend service life. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of the bare copper stranded wire for audio transmission in new energy vehicles proposed in this utility model.

[0030] Figure 2 This is a schematic diagram of the central reinforcement layer of the bare copper stranded wire for audio transmission in new energy vehicles proposed in this utility model.

[0031] Figure 3 This is a schematic diagram of the outer conductor layer of the bare copper stranded wire for audio transmission in new energy vehicles proposed in this utility model.

[0032] Figure 4 This is a schematic diagram of the bare copper stranded structure of the bare copper stranded wire for audio transmission in new energy vehicles proposed in this utility model.

[0033] Legend:

[0034] 1. Central reinforcement layer; 2. Outer conductor layer; 201. Bare copper stranded structure; 202. Silver-plated copper stranded structure; 4. Shielding and heat dissipation layer; 5. Flexible protective layer; 6. Rubber shell. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figures 1 to 4 One embodiment of this utility model provides: bare copper stranded wire for audio transmission in new energy vehicles, comprising:

[0037] The composite conductor layer consists of a central reinforcing layer 1 and an outer conductor layer 2. The central reinforcing layer 1 embeds aramid fibers, which extend along the axial direction of the composite conductor layer, providing structural support for the stranded wires and resisting the risk of breakage caused by vehicle vibration. The outer conductor layer 2 includes a bare copper stranded structure 201 and a silver-plated copper stranded structure 202. Multiple bare copper wires of the bare copper stranded structure 201 are spirally twisted around the aramid fibers to form the inner conductor layer. The bare copper stranded structure 201 and the silver-plated copper stranded structure 202 are twisted in opposite directions, with the inner side of the bare copper stranded structure 201 wrapping around the outer side of the silver-plated copper stranded structure 202. This opposite twisting direction creates an electromagnetic repulsion structure. The outer silver-plated copper layer processes high-frequency signals, and the dual-metallic layers synergistically reduce the skin effect, achieving low-loss transmission of signals across the entire frequency band. The electromagnetic repulsion effect generated by the opposite twisting direction further optimizes the signal transmission path and improves sound quality purity.

[0038] The shielding and heat dissipation layer 4, which encloses the composite conductor layer, includes a metal braided mesh and a thermally conductive material filling the space between the metal braided mesh and the composite conductor layer. The metal braided mesh is made of a copper-nickel alloy, and the thermally conductive material is a graphene-based thermally conductive adhesive. The thermally conductive material fills the mesh openings of the metal braided mesh and the gaps between the metal braided mesh and the composite conductor layer. A thermally conductive channel is formed between the braided nodes of the metal braided mesh and the outer surface of the silver-plated copper stranded structure 202 through the thermally conductive material, quickly dissipating the heat generated during signal transmission to the external environment and preventing signal distortion caused by heat accumulation. Simultaneously, the copper-nickel alloy braided mesh short-circuits external interference signals to ground through electromagnetic induction, forming an electromagnetic shielding barrier to ensure the stability of the system under high-power operation.

[0039] The flexible protective layer 5, which encloses the shielding and heat dissipation layer 4, includes an elastic strip spirally wound around the shielding and heat dissipation layer 4 and a waterproof coating applied to the outermost layer. The elastic strip is made of silicone and is tightly wound in a spiral shape around the outer surface of the shielding and heat dissipation layer 4, with gaps between adjacent spirals to enhance the flexibility of the stranded wire, enabling it to adapt to complex wiring environments and reducing the impact of external forces on the internal structure. The waterproof coating is a nano-level coating that penetrates and cures within the spiral gaps of the elastic strip, forming a continuous sealed structure that effectively isolates moisture and dust. A rubber shell 6 is provided on the outer side of the flexible protective layer 5, which, together with the nano-waterproof coating and the elastic strip, ensures that the stranded wire operates stably for a long time in harsh environments such as humidity, high temperature, and vibration.

[0040] Working principle: After the audio signal enters the composite conductor layer, the aramid fibers of the central reinforcing layer 1 extend axially, providing structural support for the stranded wire and resisting the risk of breakage caused by vehicle vibration. The bare copper stranded structure 201 and the silver-plated copper stranded structure 202 of the outer conductor layer 2 are stranded in opposite directions to form a layered transmission channel: the inner bare copper layer processes low- and mid-frequency signals, and the outer silver-plated copper layer processes high-frequency signals. The dual metal layers work together to reduce the skin effect and achieve low-loss transmission of signals across the entire frequency band. The electromagnetic repulsion effect generated by the opposite stranding direction further optimizes the signal transmission path and improves the purity of sound quality.

[0041] The copper-nickel alloy braided mesh of the shielding and heat dissipation layer 4 wraps around the composite conductor layer, short-circuiting external interference signals to ground through the principle of electromagnetic induction, thus forming an electromagnetic shielding barrier. The graphene-based thermally conductive adhesive filling the space between the braided mesh and the composite conductor layer forms a continuous thermally conductive channel between the shielding layer and the conductor layer, quickly dissipating the heat generated by signal transmission to the external environment, avoiding signal distortion caused by heat accumulation, and ensuring the stability of the system under high-power operation.

[0042] The silicone spirals of the flexible protective layer 5 are wound at equal intervals around the shielding and heat dissipation layer 4, which not only enhances the flexibility of the stranded wire, enabling it to adapt to complex wiring environments, but also provides buffer space through the design of the spiral gaps, reducing the impact of external forces on the internal structure. The nano-waterproof coating penetrates and cures within the spiral gaps, forming a continuous sealed structure that effectively isolates moisture and dust. Combined with the mechanical protection of the rubber outer shell 6, this ensures that the stranded wire can work stably for a long time in harsh environments such as humidity, high temperature, and vibration.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bare copper stranded wire for audio transmission in new energy vehicles, characterized in that, include: A composite conductor layer consisting of a central reinforcing layer (1) and an outer conductor layer (2), wherein the central reinforcing layer (1) is embedded with aramid fibers, and the outer conductor layer (2) includes a bare copper stranded structure (201) and a silver-plated copper stranded structure (202), wherein the bare copper stranded structure (201) and the silver-plated copper stranded structure (202) are stranded in opposite directions, and the inner side of the bare copper stranded structure (201) wraps around the outer side of the silver-plated copper stranded structure (202); A shielding and heat dissipation layer (4) is wrapped around the composite conductor layer. The shielding and heat dissipation layer (4) includes a metal braided mesh and a thermally conductive material filled between the metal braided mesh and the composite conductor layer. A flexible protective layer (5) is wrapped around the shielding heat dissipation layer (4). The flexible protective layer (5) includes an elastic strip spirally wound around the shielding heat dissipation layer (4) and a waterproof coating applied to the outermost layer.

2. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: The bare copper stranded structure (201) and the silver-plated copper stranded structure (202) form an electromagnetic repulsion structure by stranding in opposite directions.

3. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: The metal braided mesh is made of copper-nickel alloy, and the thermally conductive material is graphene-based thermally conductive adhesive. The thermally conductive material fills the mesh openings of the metal braided mesh and the gaps between the metal braided mesh and the composite conductor layer.

4. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: The elastic strip is made of silicone. The elastic strip is tightly wound in a spiral shape around the outer surface of the shielding and heat dissipation layer (4). A gap is formed between adjacent spirals. The waterproof coating covers the elastic strip and the gap.

5. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: The aramid fiber extends along the axial direction of the composite conductor layer, and multiple bare copper wires of the bare copper stranded structure (201) are spirally stranded around the aramid fiber.

6. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: A heat-conducting channel is formed between the braiding nodes of the metal braided mesh and the outer surface of the silver-plated copper stranded structure (202) through the heat-conducting material, and the outer surface of the metal braided mesh is in close contact with the inner surface of the elastic strip.

7. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: The waterproof coating is a nanoscale coating that penetrates and solidifies within the spiral gaps of the elastic strip, forming a continuous sealed structure.

8. The bare copper stranded wire for audio transmission in new energy vehicles according to claim 1, characterized in that: A rubber shell (6) is provided on the outside of the flexible protective layer (5).

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