CN210925542U

CN210925542U - Storage battery cable for electric bus

Info

Publication number: CN210925542U
Application number: CN201922025988.8U
Authority: CN
Inventors: 薛培东
Original assignee: Shanghai Panda Electric Wire Co ltd; Shanghai Panda Special Wire Co ltd; Shanghai Yu'an Special Wire Co ltd; Shanghai Panda Wire & Cable Co ltd
Current assignee: Shanghai Panda Electric Wire Co ltd; Shanghai Panda Special Wire Co ltd; Shanghai Yu'an Special Wire Co ltd; Shanghai Panda Wire & Cable Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-03
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to a battery cable for an electric motor coach, which comprises a conductor, a flame retardant coating (4), an insulating layer (5), a shielding layer (6) and a sheath layer (7); the conductor is formed by processing a plurality of monofilaments (1) into core wires (8) through compound yarns and performing compound twisting on a plurality of core wires, the monofilaments are made of copper-clad aluminum materials, a plurality of first reinforcing rods (2) are added among the monofilaments, a plurality of second reinforcing rods (3) are added among the core wires, and the first reinforcing rods and the second reinforcing rods are made of ultra-high molecular weight polyethylene fibers; the conductor is wrapped with a fire-resistant layer, and the fire-resistant layer is sequentially wrapped with an insulating layer, a shielding layer and a sheath layer in an extruding mode. The utility model discloses a alleviate the cable quality, possessed good tensile resistance, refractiveness, interference immunity, weatherability.

Description

Storage battery cable for electric bus

Technical Field

The utility model relates to a storage battery cable, in particular to storage battery cable for [ electric ] motor coach.

Background

At present, the electric motor coach has wide development prospect as an important classification of new energy coaches, saves the use of traditional fuel and can improve the air quality of cities. The traditional battery cable is formed by extruding a polyvinyl chloride (PVC) or cross-linked Polyethylene (PE) insulating layer on a copper conductor, and the battery cable used by the electric motor coach has a larger cross section (generally 35 mm)²Above), and the length of use is longer (generally 10m to 20 m), therefore adopt pure copper core as the conductor, not only lead to the cable heavier, the operating personnel is comparatively inconvenient when using, and the cable cost also increases a lot correspondingly. In addition, materials such as polyvinyl chloride (PVC) or cross-linked Polyethylene (PE) have poor weather resistance and low insulation resistance, and the insulation layer is easy to age quickly when being in a high-temperature environment for a long time, so that the service life of the cable is shortened, and the long-term use safety is reduced.

Disclosure of Invention

An object of the utility model is to provide a [ electric ] motor coach is with battery cable, this battery cable's conductor is copper clad aluminum material to added ultra high molecular weight polyethylene fiber in the conductor, the conductor outsourcing flame retardant coating, insulating layer, shielding layer and restrictive coating in proper order, make cable weight alleviate, and possess good tensile resistance, refractiveness, interference immunity, weatherability.

The utility model discloses a realize like this:

a battery cable for an electric motor coach comprises a conductor, a fire-resistant layer, an insulating layer, a shielding layer and a sheath layer; the conductor is formed by processing a plurality of monofilaments into core wires through compound yarns and twisting a plurality of core wires repeatedly, the monofilaments are made of copper-clad aluminum materials, a plurality of first reinforcing rods are added among the monofilaments, a plurality of second reinforcing rods are added among the core wires, and the first reinforcing rods and the second reinforcing rods are made of ultrahigh molecular weight polyethylene fibers; the conductor is wrapped with a fire-resistant layer, and the fire-resistant layer is sequentially wrapped with an insulating layer, a shielding layer and a sheath layer in an extruding mode.

The monofilament has a diameter of 0.12 mm.

The fire-resistant layer is a mica tape with two layers of overlapping rate of 50%.

The insulating layer and the sheath layer are thermoplastic elastomers with 125 ℃ temperature resistance level, environmental protection and flame retardance.

The shielding layer is an aluminum-magnesium alloy wire braid layer with the density of 3 g/cm³。

The utility model discloses the conductor of [ electric ] motor coach battery cable adopts copper clad aluminum material, compares in traditional pure copper core cable, has alleviateed cable weight, makes things convenient for operating personnel to use, has reduced intensity of labour, has added ultra high molecular weight polyethylene fiber moreover when the conductor adds man-hour, and the polyethylene fiber of high specific strength, high specific modulus has improved the tensile strength of conductor for operating personnel is difficult to the break conductor when the electric wire is dragged in the poling. In addition, a mica tape is wrapped outside the processed conductor, so that the cable has good fire resistance, and the safety of the whole cable is improved. The high-density shielding layer formed by weaving the aluminum-magnesium alloy wires is used between the insulating layer and the sheath layer, so that the cable has good anti-interference performance in the use process. The insulating layer and the sheath layer adopt the thermoplastic elastomer with the temperature resistance level of 125 ℃, environmental protection and flame retardance, so that the whole cable has good flexibility and weather resistance and excellent processing performance.

Compared with the prior art, the utility model, following beneficial effect has: the cable has the advantages of reducing the weight of the cable on the premise of ensuring good electrical property, being easy to use, having good mechanical property and weather resistance and improving the comprehensive performance of the whole cable.

Drawings

FIG. 1 is a schematic structural view of a battery cable for an electric motor coach of the present invention;

in the figure, 1 monofilament, 2 first reinforcing rods, 3 second reinforcing rods, 4 fire-resistant layers, 5 insulating layers, 6 shielding layers, 7 sheath layers and 8 core wires.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1, the battery cable for the electric motor coach comprises a conductor, a fire-resistant layer 4, an insulating layer 5, a shielding layer 6 and a sheath layer 7.

The conductor is that many monofilaments 1 are processed into heart yearn 8, many heart yearns 8 and constitute after the compound hank through the strand, and monofilament 1 is the copper clad aluminium material that the diameter is 0.12mm, has added a plurality of first reinforcing bars 2 between many monofilaments 1, has added a plurality of second reinforcing bars 3 between many heart yearns 8, and first reinforcing bar 2 and second reinforcing bar 3 are ultrahigh molecular weight polyethylene fibre. Compared with the traditional pure copper core cable, the conductor made of the copper-clad aluminum material effectively reduces the overall weight of the cable, overcomes the draw ratio defect of the copper-clad aluminum material by utilizing the characteristics of high specific strength and high specific modulus of the ultra-high molecular weight polyethylene fiber, ensures good tensile strength of the cable, and ensures that an operator can use the cable easily, conveniently operate the cable and cannot break the conductor easily.

The conductor has flame retardant coating 4 outward around the package, and flame retardant coating 4 is two-layer overlap percentage for 50% mica tape for the cable possesses good fire resistance, has promoted the security of whole cable. The fire-resistant layer 4 is sequentially extruded with an insulating layer 5, a shielding layer 6 and a sheath layer 7. The shielding layer 6 is an aluminum-magnesium alloy wire braided layer, and the density of magnesium content is 3 g/cm³On the insulating layer 5 andand a high-density shielding layer 6 is adopted between the sheath layers 7, so that the cable has good anti-interference performance in the use process. Meanwhile, the insulating layer 5 and the sheath layer 7 are thermoplastic elastomer (TPE) with temperature-resistant grade of 125 ℃, environment-friendly and flame-retardant, and have excellent performances such as good flexibility, aging resistance, heat resistance, oil resistance and water resistance, environmental protection, no toxicity and excellent processing performance.

The utility model discloses the conductor of [ electric ] motor coach is with bottle cable adopts copper clad aluminum material to add ultra high molecular weight polyethylene fibre in the conductor, also can guarantee good tensile strength when lightening cable weight, convenient operation. The conductor is wrapped with the fireproof layer, so that better fire resistance is realized, and the overall safety of the cable is improved. Meanwhile, the cable can provide better anti-interference performance, flexibility, weather resistance and processability, and better comprehensive performance of the cable is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A battery cable for an electric motor coach comprises a conductor, a fire-resistant layer (4), an insulating layer (5), a shielding layer (6) and a sheath layer (7); the method is characterized in that: the conductor is formed by processing a plurality of monofilaments (1) into core wires (8) through compound yarns and twisting a plurality of core wires (8), the monofilaments (1) are made of copper-clad aluminum materials, a plurality of first reinforcing rods (2) are added among the monofilaments (1), a plurality of second reinforcing rods (3) are added among the core wires (8), and the first reinforcing rods (2) and the second reinforcing rods (3) are made of ultrahigh molecular weight polyethylene fibers; the conductor is wrapped with a fire-resistant layer (4), and the fire-resistant layer (4) is sequentially wrapped with an insulating layer (5), a shielding layer (6) and a sheath layer (7).

2. The battery cable for the electric bus according to claim 1, characterized in that: the diameter of the monofilament (1) is 0.12 mm.

3. The battery cable for the electric bus according to claim 1, characterized in that: the fire-resistant layer (4) is a mica tape with two layers of overlapping rate of 50%.

4. The battery cable for the electric bus according to claim 1, characterized in that: the insulating layer (5) and the sheath layer (7) are thermoplastic elastomers with temperature resistance of 125 ℃, environmental protection and flame retardance.

5. The battery cable for the electric bus according to claim 1, characterized in that: the shielding layer (6) is an aluminum-magnesium alloy wire braid layer with the density of 3 g/cm³。