Aluminum conductors for automotive wiring

Abstract

The invention discloses an aluminum conductor for automotive wiring. The aluminum conductor comprises a cable core and an insulation layer wrapping the cable core. The cable core is composed of a plurality of stranded aluminum wires, the outer diameter of the section of each aluminum wire of the cable core is d=0.15-0.80mm, the product of the sum Sigma S1 of the resistance value RL in unit length of the cable core and the sectional area of the aluminum wire is RL*Sigma S1=30*10-9 omega*m to 33*10-9 omega*m, and the voidage of a cavity enclosed by the insulation layer is 0.4-1.2. The voidage is the ratio (S-Sigma S1) / Sigma S1 of the difference between the sectional area S of the cavity of the insulation and the sectional area sum Sigma S1 of the aluminum wires in the cable core to the sectional area sum Sigma S1 of the aluminum wires. The weight of the aluminum conductor can be effectively decreased, conductor cost is lowered, the sectional area of the conductor can be effectively controlled, arrangement of the conductor is facilitated, and the aluminum conductor is widely applicable to vehicles such as cars.

Description

technical field [0001] The present invention relates to cables for motor vehicles, in particular to aluminum wiring cables used in motor vehicles such as automobiles for signal control and power transmission. Background technique [0002] For automobiles and other motor vehicles, the body weight and vehicle cost are two key indicators for evaluating its performance advantages and cost performance. The weight of the vehicle not only directly affects the fuel economy and operational safety and reliability of the vehicle, but also determines the exhaust emission of the vehicle. [0003] With the high performance and high functionality of automobiles, the control circuits of various electronic devices have increased greatly, and the wiring cables of a single automobile are more than several hundred meters long. The length of wiring such as signal control cables and power transmission cables used in automobiles increases, and the occupied space increases, thereby increasing the ...

AI Technical Summary

Problems solved by technology

However, there are some shortcomings in the practice of replacing copper with aluminum. Although the density of aluminum is low and the weight is light, to maintain the same electrical properties of the automotive cable, the total cross-sectional area of ​​the cable conductor will inevitably increase, making the cable occupy a larger space. , which brings great difficulties to the laying and installation of cables in narrow and complicated spaces, especially in order to improve the flexibility of wires and cables, so as to facilitate laying and installation, the cable core must be twisted with multiple monofilaments, The thinner the monofilament of the cable core, the better the flexibility, but the more the number of monofilaments in the cable core, the larger the gap between the monofilaments, and finally the thicker the cable, and the space occupied by the cable increases again.

Therefore, in the case of ensuring the electrical performance and flexibility of the conductor, the low density of aluminum and the multi-single-filament cable core will significantly increase the space occupied by the wire. Reducing core monofilament clearance and conductor volume becomes a top priority

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