Signal transmission cable of new energy automobile

Abstract

The utility model discloses a signal transmission cable of a new energy automobile, which comprises a signal wire, a power wire, a ground wire and a sheath layer arranged on the outer side of a cable core formed by twisting the signal wire, the power wire and the ground wire, the outer side of the signal wire and the outer side of the power wire are respectively coated with a metal braid layer, the metal braid layer is formed by weaving a plurality of steel wires in a staggered mode, and the metal braid layer is coated with a sheath layer. The outer side of each steel wire is wrapped with a copper layer, and the surface, opposite to the steel wire, of each copper layer is provided with a tin coating. According to the utility model, the structural strength and toughness of the cable are improved, and interference of electron radiation generated in a high-voltage transmission process on signal transmission and electronic components is reduced while signal transmission is not affected.

Description

Technical Field

[0001] The utility model relates to a signal transmission cable for a new energy vehicle, belonging to the technical field of new energy and energy saving. Background Art

[0002] New opportunities bring new challenges. Considering that the existing high-voltage wiring harnesses of electric vehicles must meet the requirements of high-voltage and high-current transmission, the high-voltage cables of new energy vehicles are subject to higher voltages (rated voltage up to 1500V), larger currents (rated current up to 600A), and stronger electromagnetic radiation. They are prone to produce strong electromagnetic interference to surrounding electronic equipment, affecting the normal operation of other electronic equipment. However, the shielded cable products for new energy vehicles currently circulating on the market have poor overall structural strength and toughness, and are easily affected by the electronic radiation generated during the high-voltage transmission process, which interferes with signal transmission and electronic components. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a signal transmission cable for new energy vehicles, which not only improves the structural strength and toughness of the cable, but also reduces the interference of electronic radiation generated during high-voltage transmission on signal transmission and electronic components without affecting signal transmission.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a signal transmission cable for new energy vehicles, including: a signal line, a power line, a ground line and a sheath layer arranged on the outside of a cable core formed by twisting the signal line, the power line and the ground line, the outside of the signal line and the power line are covered with a metal braided layer, the metal braided layer is formed by interlacing and weaving a plurality of steel wires, the outside of each of the steel wires is wrapped with a copper layer, and the copper layer has a tin-plated layer on the surface opposite to the steel wire.

[0005] The further improved scheme in the above technical scheme is as follows:

[0006] 1. In the above solution, the diameter of the steel wire coated with the copper layer and the tin-plated layer is 0.18 mm to 0.22 mm.

[0007] 2. In the above solution, the plurality of steel wires in the metal braided layer further include: a plurality of X-direction steel wires wound around the outside of the insulating layer along a first direction and a plurality of Y-direction steel wires wound around the outside of the insulating layer along a second direction.

[0008] 3. In the above solution, two signal lines and two power lines are provided, and the metal braided layer is coated on the outside of the line pair group formed by the two signal lines and / or the two power lines.

[0009] 4. In the above solution, the signal line and the power line further include: a central conductor and an insulating layer covering the outside of the central conductor.

[0010] 5. In the above solution, the insulating layer is a foamed insulating layer or an elastic insulating layer.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The signal transmission cable of the utility model for new energy vehicles has a signal line and a power line whose outer sides are both covered with a metal braided layer, the metal braided layer is formed by interlacing and weaving a plurality of steel wires, the outer side of each steel wire is wrapped with a copper layer, and the copper layer has a tinned layer on the surface opposite to the steel wire, which not only improves the structural strength and toughness of the cable, but also reduces the interference of electronic radiation generated during high-voltage transmission on signal transmission and electronic components without affecting signal transmission; in addition, its insulating layer is a foamed insulating layer or an elastic insulating layer, which further improves the compressive performance and structural strength of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 This is a schematic diagram of the structure of the signal transmission cable for new energy vehicles of the utility model;

[0014] Attached Figure 2 A schematic diagram of a metal braided layer of a signal transmission cable for a new energy vehicle of the utility model;

[0015] Attached Figure 3 The utility model is a schematic diagram of the structure of the steel wire of the signal transmission cable of the new energy vehicle.

[0016] In the above figures: 1, center conductor; 2, insulation layer; 3, sheath layer; 4, metal braided layer; 41, steel wire; 42, copper layer; 43, tinned layer; 61, X-direction steel wire; 62, Y-direction steel wire; 7, signal line; 8, power line; 9, ground line. Implementation

[0017] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0018] Embodiment 1: A signal transmission cable for a new energy vehicle, comprising: a signal line 7, a power line 8, a ground line 9 and a sheath layer 3 arranged on the outside of a cable core formed by twisting the signal line 7, the power line 8 and the ground line 9, the outside of the signal line 7 and the power line 8 are both covered with a metal braided layer 4, the metal braided layer 4 is formed by interlacing and weaving a plurality of steel wires 41, the outside of each of the steel wires 41 is wrapped with a copper layer 42, and the copper layer 42 has a tinned layer 43 on the surface opposite to the steel wire 41.

[0019] The diameter of the steel wire 41 coated with the copper layer 42 and the tin-plated layer 43 is 0.19 mm.

[0020] The plurality of steel wires 41 in the metal braided layer 4 further include: a plurality of X-direction steel wires 61 wound around the outside of the insulating layer 2 along the first direction and a plurality of Y-direction steel wires 62 wound around the outside of the insulating layer 2 along the second direction.

[0021] There are two signal lines 7 and two power lines 8 , and the metal braided layer 4 is coated on the outside of a line pair group formed by the two signal lines 7 and the two power lines 8 .

[0022] The signal line 7 and the power line 8 further include: a central conductor 1 and an insulating layer 2 covering the outer side of the central conductor 1 .

[0023] The insulating layer 2 is a foamed insulating layer.

[0024] Embodiment 2: A signal transmission cable for a new energy vehicle, comprising: a signal line 7, a power line 8, a ground line 9 and a sheath layer 3 arranged on the outside of a cable core formed by twisting the signal line 7, the power line 8 and the ground line 9, the outside of the signal line 7 and the power line 8 are both covered with a metal braided layer 4, the metal braided layer 4 is formed by interlacing and weaving a plurality of steel wires 41, the outside of each of the steel wires 41 is wrapped with a copper layer 42, and the copper layer 42 has a tinned layer 43 on the surface opposite to the steel wire 41.

[0025] The diameter of the steel wire 41 coated with the copper layer 42 and the tin-plated layer 43 is 0.21 mm.

[0026] There are two signal wires 7 and two power wires 8 , and the metal braided layer 4 is coated on the outside of a wire pair group formed by the two signal wires 7 and the power wires 8 .

[0027] The signal line 7 and the power line 8 further include: a central conductor 1 and an insulating layer 2 covering the outer side of the central conductor 1 .

[0028] The insulating layer 2 is an elastic insulating layer.

[0029] Further explanation: Tinned copper clad steel braiding replaces conventional tinned copper or bare copper braiding. The composite wire with a tinned copper layer wrapped around the steel wire has both the strength and toughness of steel and the conductivity, weldability and corrosion resistance of copper, and good high-frequency performance. It uses the skin effect of low-voltage and high-frequency signals to travel along the surface in the high-frequency area, so as long as the thickness of the copper layer reaches a certain range, the signal of a certain frequency band can be ensured to be transmitted; especially at high frequencies, since the skin effect increases with increasing frequency, the tinned copper clad steel wire is better at transmitting high-frequency signals.

[0030] The use of the signal transmission cable for the above-mentioned new energy vehicles not only improves the structural strength and toughness of the cable, but also reduces the interference of electronic radiation generated during high-voltage transmission on signal transmission and electronic components without affecting signal transmission; it also further improves the compressive resistance and structural strength of the cable.

[0031] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A signal transmission cable for new energy vehicles, comprising: A signal line (7), a power line (8), a ground line (9), and a sheath layer (3) arranged on the outside of a cable core formed by twisting the signal line (7), the power line (8) and the ground line (9), characterized in that the outside of the signal line (7) and the power line (8) are both covered with a metal braided layer (4), the metal braided layer (4) is formed by interlacing and braiding a plurality of steel wires (41), the outside of each of the steel wires (41) is wrapped with a copper layer (42), and the copper layer (42) has a tinned layer (43) on the surface opposite to the steel wire (41).

2. The signal transmission cable for new energy vehicles according to claim 1, characterized in that: The steel wire (41) coated with the copper layer (42) and the tin-plated layer (43) has a diameter of 0.18 mm to 0.22 mm.

3. The signal transmission cable for new energy vehicles according to claim 1, characterized in that: The plurality of steel wires (41) in the metal braided layer (4) further comprise: a plurality of X-direction steel wires (61) wound along a first direction around the outside of the insulating layer (2) and a plurality of Y-direction steel wires (62) wound along a second direction around the outside of the insulating layer (2).

4. The signal transmission cable for new energy vehicles according to claim 1, characterized in that: Two signal lines (7) and two power lines (8) are provided, and the metal braided layer (4) is coated on the outside of a line pair group formed by the two signal lines (7) and / or the two power lines (8).

5. The signal transmission cable for new energy vehicles according to claim 1, characterized in that: The signal line (7) and the power line (8) both further comprise: a central conductor (1) and an insulating layer (2) covering the outside of the central conductor (1).

6. The signal transmission cable for new energy vehicles according to claim 5, characterized in that: The insulating layer (2) is a foamed insulating layer or an elastic insulating layer.

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