High-voltage cable for internal connection of electric vehicle and manufacturing method thereof

Abstract

The invention belongs to the technical field of cables, and relates to a high-voltage cable for internal connection of an electric vehicle, which includes a conductor, a tape, an insulating layer, and a sheath layer, and is characterized in that the conductor is made of a plurality of annealed annealed annealed fifth-type annealed aluminum wires or Composed of galvanized aluminum wire or tinned aluminum wire, the cross-sectional area of ​​the conductor is 1.5-120 mm square, the material of the insulating layer is 125 ° C environmental protection flame retardant radiation cross-linked polyolefin, the sheath layer The material is 125°C environmentally friendly flame-retardant thermoplastic elastomer TPU; the conductor is composed of multiple layers, the stranding direction between adjacent layers is opposite, the stranding pitch of the outer layer is larger than that of the inner layer, and the diameter of the outer layer of aluminum wire is larger than that of the inner layer. The diameter of the layer aluminum wire is large. The invention also discloses a manufacturing method of the cable. The invention has the following main beneficial effects: softer, easier to bend, easier to construct, lighter in weight, lower in cost, better able to withstand high voltage, high current, high temperature, and electrical interference; better flame retardant effect, better bending resistance , It is safer to use.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles and cables, and in particular relates to a high-voltage cable for internal connection of electric vehicles 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 be...

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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

[0006] The application number applied by our company is: 2014104424205 and the name is: "A high-voltage connection cable for electric vehicle interior with super soft aluminum conductor and its manufacturing method", the application number is: 2014104424313 and the name is: "Have super soft aluminum conductor The high-voltage connecting cable for electric vehicle internal use and its production method", the application number is: 2014104424328 and the title: "Double-sheathed high-voltage connection cable for electric vehicle internal use with ultra-soft aluminum conductor and its production method" patent, the sheath layer The material is still not ideal, so there is still room for improvement in softness and flame retardancy

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