Double-sheath high voltage connecting cable used in electric vehicle and provided with ultra-soft aluminum conductor and method for manufacturing double-sheath high voltage connecting cable

Abstract

The invention belongs to the technical field of cables, and relates to a double-sheath high voltage connecting cable used in an electric vehicle and provided with an ultra-soft aluminum conductor. The double-sheath high voltage connecting cable comprises the conductor, a wrapping tape, an insulating layer, an aluminum foil layer, a shielding layer and a sheath layer, and is characterized in that the conductor is formed by intertwisting the fifth kind of soft aluminum wires obtained after annealing treatment, and the cross sectional area of the conductor ranges from 1.5 mm<2> to 120 mm<2>; materials of which the insulating layer and the sheath layer are made meet one of the conditions that (1) both the insulating layer and the sheath layer are made of environment-friendly flame-retardant thermoplastic elastomers (TPEs) at the temperature of 125 DEG C, (2) both the insulating layer and the sheath layer are made of environment-friendly flame-retardant irradiation crosslinking polyolefin at the temperature of 125 DEG C and (3) the insulating layer is made of environment-friendly flame-retardant irradiation crosslinking polyolefin at the temperature of 125 DEG C and the sheath layer is made of environment-friendly flame-retardant thermoplastic elastomers (TPEs) at the temperature of 125 DEG C. The double-sheath high voltage connecting cable has the advantages of being softer, easier to bend, lower in self weight, lower in cost, highly resistant to high voltage and high currents, better in flame retardant effect and safer to use.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a double-sheathed high-voltage connection cable with supersoft aluminum conductors used inside electric vehicles and a manufacturing method. Background technique [0002] The high-voltage connection cable for automobile interior is a kind of power supply connection line, which is mainly used for high-voltage transmission inside the vehicle. Flexible cables for communication power supply not only require good flexibility to facilitate laying in narrow spaces or similar situations, but also require ideal flame retardancy to meet higher fire protection requirements. [0003] At present, most of the cables for automobiles at home and abroad use copper conductors, which are heavy and less flexible; flexible cables for communication power supplies are usually used as alternatives at home and abroad. [0004] Technical information about flexible cables for communication powe...

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Problems solved by technology

[0005] Although the flexible cables for communication power supplies in the prior art have corresponding technical effects, they have the following common defects: (1) because they are made of stranded fine copper Silk is used as a conductor, and its softness cannot meet the desired requirements

And due to the poor softness, the bending radius is limited, so when laying in a narrow space, obstructed by immovable objects or even corners, it is easy to affect the construction speed, especially in places with small spaces such as vehicles; (2) Because copper is generally used as the conductor of flexible cables under technical prejudice, there is not only blindness in the rational use of raw materials, but also the manufacturing cost of flexible cables is high; third, due to the high density of copper, the weight of cables is relatively high. Therefore, not only the cost of logistics transportation and warehousing is high, but also the labor intensity of the construction personnel during the laying process is high, and the labor cost is high

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