CN-224203863-U - Multilayer shielding automobile high-speed transmission Ethernet cable

Abstract

The utility model discloses a multilayer shielding automobile high-speed transmission Ethernet cable, which comprises two core wires and a metal drainage wire, wherein the core wires and the metal drainage wire are sequentially coated with a tinned copper wire weaving layer, a double-layer nano composite shielding layer and an irradiation crosslinking polyolefin sheath, and the double-layer nano composite shielding layer comprises a high-conductivity nano material inner layer and a high-permeability nano material outer layer. The multi-layer shielding automobile high-speed transmission Ethernet cable has the advantages of high transmission efficiency, high reliability, high durability and the like.

Inventors

• YANG PEICAI
• ZHANG ZHENGXIN
• WU YIN
• WANG LIANDI

Assignees

• 江苏江扬线缆有限公司

Dates

Publication Date

20260505

Application Date

20250520

Claims (6)

1. 1. The multilayer shielding automobile high-speed transmission Ethernet cable is characterized by comprising two core wires and a metal drainage wire, wherein a tinned copper wire braiding layer, a double-layer nano composite shielding layer and an irradiation crosslinking polyolefin sheath are sequentially coated outside the core wires and the metal drainage wire, and the double-layer nano composite shielding layer comprises a high-conductivity nano material inner layer and a high-permeability nano material outer layer.
2. 2. The multilayer shielding automotive high-speed transmission Ethernet cable of claim 1, wherein said inner layer of high-conductivity nanomaterial is a grid structure and said outer layer of high-permeability nanomaterial is a dense high-permeability nanocoating.
3. 3. The multi-layer shielding automotive high-speed transmission Ethernet cable of claim 1 wherein said metallic drain wire is a copper-silver composite drain wire.
4. 4. The multi-layer shielding automotive high-speed transmission Ethernet cable of claim 3 wherein said copper-silver composite drain wire comprises a high purity copper core and a silver plated surface layer.
5. 5. The multi-layer shielded automotive high speed transmission Ethernet cable of any one of claims 1-4 wherein said core wire comprises a bare copper conductor and an elastomeric insulating layer encased over the bare copper conductor.
6. 6. The multi-layer shielded automotive high speed transmission Ethernet cable of any one of claims 1-4 wherein said metallic drainage wire is disposed in close proximity to two core wires.

Description

Multilayer shielding automobile high-speed transmission Ethernet cable Technical Field The utility model relates to the technical field of cables, in particular to a multilayer shielding automobile high-speed transmission Ethernet cable. Background The vehicle ethernet is a local area network technology specifically designed for the automotive environment, and is based on the conventional ethernet protocol, but is optimized and adjusted to the specific requirements of the vehicle internal network. The vehicle-mounted Ethernet cable is a cable for transmitting network data of an automobile, and is used for connecting various vehicle-mounted electronic equipment (such as an instrument panel, a vehicle recorder, a navigation system, an audio system, a camera and the like) and realizing data communication and transmission through an Ethernet protocol. With the development of automotive electronic systems, the demand for on-board ethernet cables is increasing, and in particular, continuous innovation and optimization is still required in terms of transmission reliability, durability, and the like. Disclosure of utility model The utility model aims to provide a multilayer shielding automobile high-speed transmission Ethernet cable so as to solve the problems in the prior art. The utility model aims to realize the multi-layer shielding automobile high-speed transmission Ethernet cable, which comprises two core wires and a metal drainage wire, wherein the core wires and the metal drainage wire are sequentially coated with a tinned copper wire braiding layer, a double-layer nano composite shielding layer and an irradiation crosslinking polyolefin sheath, and the double-layer nano composite shielding layer comprises a high-conductivity nano material inner layer and a high-permeability nano material outer layer. According to the multi-layer shielding automobile high-speed transmission Ethernet cable, through multi-level collaborative shielding of the tinned copper wire braid layer and the double-layer nano composite shielding layer, the electromagnetic energy dredging function of the metal drainage wire is combined, the shielding efficiency of the cable is remarkably improved, and meanwhile, the flexibility and the deformation resistance of the cable in an extreme temperature range are guaranteed by means of the irradiation crosslinking polyolefin sheath. In conclusion, the multi-layer shielding automobile high-speed transmission Ethernet cable has the advantages of high transmission efficiency, high reliability, high durability and the like. As a further improvement of the utility model, the inner layer of the high-conductivity nano material adopts a grid structure, and the outer layer of the high-permeability nano material adopts a compact high-permeability nano coating. The double-layer nano composite shielding layer is formed by layering and compositing high-permeability and high-conductivity nano materials based on advanced nano composite structure design, and has strong electromagnetic shielding effectiveness and anti-interference capability. The outer layer adopts a compact high-permeability nano coating, can quickly absorb and convert high-frequency electromagnetic wave energy, the inner layer adopts a conductive nano grid structure, and further reflects residual interference signals through an impedance gradual change principle to form a broad-band (covering the range of MHz to GHz) cooperative wave-absorbing barrier, thereby effectively inhibiting electromagnetic leakage and external radiation interference. The ultra-fine structure of the nanomaterial imparts excellent high temperature (-50 ℃ to 150 ℃) resistance, damp-heat resistance and chemical corrosion resistance characteristics to the shielding layer, and maintains stable shielding performance. As a further improvement of the utility model, the metal drainage wire adopts a copper-silver composite drainage wire, combines the high conductivity of copper with the excellent antioxidation characteristic of silver, and realizes double breakthrough of efficiency and stability in power transmission and signal transmission. As a further improvement of the utility model, the copper-silver composite drainage wire comprises a high-purity copper core and a silver-plated surface layer. The copper-silver composite drainage wire is formed by compounding a high-purity copper core and a surface layer by a precise silver plating process, a copper-silver metallurgical interface is densely combined by a molecular diffusion technology, the conductivity is improved to be more than 1.2 times that of pure copper, the contact resistance and the energy loss are greatly reduced, and the copper-silver composite drainage wire is suitable for high-efficiency energy transmission requirements in high-frequency and high-current scenes. The surface silver coating layer endows the drainage wire with extremely strong corrosion resistance, and can still keep a low oxidation surface state f