High-voltage connecting cable provided with ultra-soft aluminum conductor and used in electric automobile and manufacturing method of high-voltage connecting cable

Abstract

The invention belongs to the technical field of cables, and relates to a high-voltage connecting cable provided with an ultra-soft aluminum conductor and used in an electric automobile. The high-voltage connecting cable comprises the conductor, a wrapping belt wrapping the conductor, and an insulation layer wrapping the wrapping belt. The high-voltage connecting cable is characterized in that the conductor is formed by twisting fifth-type soft aluminum wires which are processed through annealing, the diameter of the fifth-type soft aluminum wires ranges from 0.10 mm to 0.45 mm, the cross sectional area of the conductor ranges from 1.5 mm<2> to 120 mm<2>, and the insulation layer is made of 120-DEG C environmentally-friendly inflaming retarding thermoplastic elastomer (TPE) or 125-DEG C environmentally-friendly inflaming retarding irradiation cross-linked polyolefin; the rated operational voltage of the cable is 1500 volts, the long-time working temperature of the cable is lower than or equal to 125 DEG C, the environment temperature is higher than or equal to -40 DEG C when the cable is laid, the continuous working time of the cable under the temperature of 175 DEG C is longer than or equal to 6 hours, and the minimum bend radius is five times of the external diameter of the cable. The high-voltage connecting cable has the main advantages that the cable is softer, more bendable, lighter, lower in cost, more resistant to high voltage, capable of allowing large current to pass, better in flame-retardant effect, and safer in use.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a high-voltage connecting cable for electric vehicles with super-soft aluminum conductors and a manufacturing method thereof. 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 power supplies can ...

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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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