CN112233835A

CN112233835A - Flexible cable for new energy automobile

Info

Publication number: CN112233835A
Application number: CN201910635237.XA
Authority: CN
Inventors: 李耿
Original assignee: Guangzhou Dongfeng Cable Co ltd
Current assignee: Guangzhou Dongfeng Cable Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2021-01-15

Abstract

The invention provides a flexible cable for a new energy automobile, which comprises an insulated wire core, wherein an inner protection layer is coated outside the insulated wire core. The outer protective layer is sequentially provided with a fireproof isolation layer, a thermal insulation layer, a shielding layer and a flexible outer protective layer. The fireproof layer and the fireproof isolation layer enable the cable to have excellent high-temperature resistance and fireproof performance, and high flame retardance of the cable is guaranteed. The heat insulation layer can reduce the conduction of external heat to the conductor of the cable, and influences the transmission performance of the cable. The shielding layer enhances the capability of the cable for resisting external electromagnetic interference, improves the working stability of the cable and enables the signal transmission to be stable. The flexible outer jacket is characterized in that the mechanical property of the cable is remarkably improved, the flexibility of the cable is improved, the flexible outer jacket comprises glass fiber yarn and silicon carbon, the two materials have excellent fireproof performance, and the fireproof performance of the flexible cable for the new energy automobile is further improved.

Description

Flexible cable for new energy automobile

Technical Field

The invention relates to the technical field of wires and cables, in particular to a flexible cable for a new energy automobile.

Background

With the continuous development of scientific technology, the new energy automobile industry characterized by green environmental protection is rapidly developing, and new energy automobiles comprise various automobiles powered by clean energy such as solar energy, electric energy, hydrogen, natural gas and the like.

The traditional cable for the automobile is not ideal in softness, flame retardant property and signal transmission stability. Due to the limited space of the automotive connection device, the bending radius of the cable is required to be high, which requires the cable to have good flexibility. Traditional cable for car can not satisfy customer's user demand, and on customer's installation scene, often influence production efficiency in whole car equipment process because of the cable is too hard, and is inflexible, even unable installation.

To sum up, develop flexible cable for new energy automobile, have advantages such as flexibility, high fire-retardant, signal transmission are stable concurrently, will have wide market prospect.

Disclosure of Invention

The invention aims to provide a flexible cable for a new energy automobile, which has high flexibility, high flame retardance and stable signal transmission.

The flexible cable for the new energy automobile comprises a preset number of conductors, wherein the conductors are extruded with an insulating layer, the insulating layer is coated with a fireproof layer, the conductors, the insulating layer and the fireproof layer form an insulating wire core, and the insulating wire core is coated with an inner protection layer after being stranded into a cable; the fire-proof isolation layer, the thermal insulation layer, the shielding layer and the flexible outer protection layer are sequentially arranged outside the inner protection layer; and a filling layer is arranged in the gap between the insulated wire cores.

Preferably, the fire-proof isolation layer is a synthetic mica tape layer.

Preferably, the heat insulation layer is an ultrafine glass wool layer.

Preferably, the shielding layer is a bare copper wire braided layer, and the braiding density is not less than 85%.

Preferably, the flexible outer protective layer comprises a glass fiber yarn layer and a silicon-carbon composite material layer coated outside the glass fiber yarn layer.

Preferably, the filling layer is a glass fiber rope filling layer.

Preferably, the insulating layer is a thermosetting polyolefin material layer.

Preferably, the fire-resistant layer is a mineral fire-resistant layer.

Preferably, the inner sheath is a thermosetting halogen-free low-smoke flame-retardant polyolefin sheath.

Preferably, an elastic layer is further arranged between the shielding layer and the flexible outer protective layer.

Compared with the prior art, the invention has the following beneficial effects: the flexible cable for the new energy automobile is provided with the fireproof layer and the fireproof isolation layer, so that the cable has excellent high-temperature resistance and fireproof performance, and the high flame retardance of the cable is ensured. The heat insulation layer is arranged, so that the heat conduction from the outside to the conductor can be reduced, and the influence on the transmission performance of the cable is reduced. The shielding layer is coated outside the heat insulation layer, so that the capacity of the cable for resisting external electromagnetic interference is enhanced, the working stability of the cable is improved, and the signal transmission is stable. The outer cladding of shielding layer has a flexible outer jacket, is showing the mechanical properties that has improved the cable and increases its compliance simultaneously, and simultaneously, the flexible outer jacket contains fine yarn layer of glass and silicon carbon layer, and two kinds of material layers all have good fire behavior, also make this flexible cable for new energy automobile's fire behavior obtain further promotion.

Drawings

Fig. 1 is a schematic structural diagram of a flexible cable for a new energy automobile provided by the invention.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the flexible cable for the new energy automobile includes a predetermined number of conductors 1, and in this embodiment, the number of the conductors 1 is three. The cable is characterized in that an insulating layer 2 is extruded outside the conductor 1, a fireproof layer 3 is coated outside the insulating layer 2, and the conductor 1, the insulating layer 2 and the fireproof layer 3 form an insulating cable core 4. The insulating wire cores 4 are coated with an inner protective layer 5 after being twisted into a cable. A fireproof isolation layer 6, a thermal insulation layer 7, a shielding layer 8 and a flexible outer protection layer 9 are sequentially arranged outside the inner protection layer 5; wherein, a filling layer 10 is arranged in the gap between the insulated wire cores 4.

In the embodiment, the fireproof isolation layer 6 is a synthetic mica tape layer, the heat-resistant grade of the synthetic mica tape is high and can reach the A-grade fire-resistant level (950-1000 ℃), so that the flexible cable for the new energy automobile has good fireproof performance. The heat insulation layer 7 is a superfine glass wool layer, and has small heat conductivity coefficient, large absorption coefficient and good flame retardant property, so that the heat conduction from the outside to the conductor can be reduced, and the influence on the transmission performance of the cable is reduced. The shielding layer 8 is a bare copper wire braided layer, the braiding density is not less than 85%, the cable is prevented from interfering with transmission of other signal wires inside the automobile or interference of other signal wires with signal transmission of the cable, the capability of the cable in resisting external electromagnetic interference is enhanced, the working stability of the cable is improved, and the signal transmission is stable. The flexible outer jacket layer 9 contains a glass fiber yarn layer 91 and coats a silicon carbon composite material layer 92 outside the glass fiber yarn layer 91, the softness of the cable is not influenced when the mechanical performance of the cable is remarkably improved, the fireproof performance of the cable is further improved, especially, two materials of glass fiber yarn and silicon carbon have excellent fireproof performance, the glass fiber yarn weaving layer 91 provides an excellent carrier for the silicon carbon composite material, the silicon carbon composite material can be well attached to the glass fiber yarn layer 91, the stability of the silicon carbon composite material is maintained, the silicon carbon composite material cannot be separated from the cable, and the flexibility of the cable is further ensured. The filling layer 10 is a glass fiber rope filling layer, so that the heat preservation, insulation, fire prevention and flame retardance of the conductor 1 can be realized, and the glass fiber rope can not generate harmful substances which pollute the environment after being melted at high temperature. The insulating layer 2 is a thermosetting polyolefin layer. The fireproof layer 3 is a mineral fireproof layer, so that the fireproof performance of the cable is effectively improved. The inner sheath 5 is a thermosetting halogen-free low-smoke flame-retardant polyolefin sheath, improves the heat preservation, insulation, fire prevention and flame retardance characteristics of the cable, and has only a few smoke and no corrosive gas escaping even if the cable is burnt.

In this embodiment, an elastic layer 11 is further disposed between the shielding layer 8 and the flexible outer sheath 9, and the elastic layer 11 diffuses the pressure to be received, so that the point pressure is diffused to the surface pressure, the local pressure is reduced, and the compression resistance is improved.

The flexible cable for the new energy automobile is provided with the fireproof layer 3 and the fireproof isolation layer, so that the cable has excellent high-temperature resistance and fireproof performance, and the high flame retardance of the cable is ensured. The heat insulation layer 6 is arranged, so that the heat conduction from the outside to the conductor 1 can be reduced, and the influence on the transmission performance of the cable is reduced. The heat insulation layer 6 is coated with the shielding layer 8, so that the capacity of resisting external electromagnetic interference of the cable is enhanced, the working stability of the cable is improved, and the signal transmission is stable. The shielding layer 8 is wrapped by the flexible outer protection layer 9, the mechanical property of the cable is obviously improved, the flexibility of the cable is improved, meanwhile, the flexible outer protection layer 9 comprises two materials of glass fiber yarn and silicon carbon, the two materials have excellent fireproof performance, and the fireproof performance of the flexible cable for the new energy automobile is further improved. Meanwhile, an elastic layer 11 is arranged to diffuse point pressure to surface pressure, so that local pressure is reduced, and the pressure resistance is improved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.

Claims

1. The utility model provides a flexible cable for new energy automobile, its includes the conductor of predetermined quantity, the conductor is crowded outward and is wrapped up an insulating layer, the insulating layer wraps outward and has a flame retardant coating, the conductor, the insulating layer and the flame retardant coating constitutes an insulating sinle silk, its characterized in that: the insulated wire cores are stranded into a cable and then coated with an inner protection layer; the fire-proof isolation layer, the thermal insulation layer, the shielding layer and the flexible outer protection layer are sequentially arranged outside the inner protection layer; and a filling layer is arranged in the gap between the insulated wire cores.

2. The flexible cable for the new energy automobile as claimed in claim 1, wherein the fire-proof isolation layer is a synthetic mica tape layer.

3. The flexible cable for the new energy automobile as claimed in claim 1, wherein the thermal insulation layer is an ultra fine glass wool layer.

4. The flexible cable for the new energy automobile as claimed in claim 1, wherein the shielding layer is a bare copper wire braid layer, and the braiding density is not less than 85%.

5. The flexible cable for the new energy automobile as claimed in claim 1, wherein the flexible outer sheath comprises a glass fiber yarn layer and a silicon carbon composite layer coated outside the glass fiber yarn layer.

6. The flexible cable for the new energy automobile as claimed in claim 1, wherein the filling layer is a glass fiber rope filling layer.

7. The flexible cable for the new energy automobile as claimed in claim 1, wherein the insulating layer is a thermosetting polyolefin material layer.

8. The flexible cable for the new energy automobile as claimed in claim 1, wherein the fire-resistant layer is a mineral fire-resistant layer.

9. The flexible cable for the new energy automobile as claimed in claim 1, wherein the inner sheath is a thermosetting halogen-free low-smoke flame-retardant polyolefin sheath.

10. The flexible cable for the new energy automobile as claimed in claim 1, wherein an elastic layer is further disposed between the shielding layer and the flexible outer sheath.