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4 Conclusion

From the two aspects of cost and performance, this article analyzes the design method of car line beam circuit, and explains the application of specific methods in combination with the work practice. Guiding significance.

The car wire beam accounts for about 5%of the quality of the vehicle. The car wire beam consists of wires, parcel materials, plug -in plug -ins, stuck nails, brackets and other parts. Among them, the ratio of wires accounts for about 70%. The lightweight analysis of the wire becomes particularly important.

The cable beam can be roughly divided into 3 categories from functional classification: power supply wires, iron wires and signal wires. This article focuses on the advantages and related risks of 0.13mm2 alloy wire instead of traditional signal cables. For signal wires, in traditional models, in comprehensive consideration of conductive performance, mechanical performance, and processing technology, we will give priority to choosing pure copper with a copper content greater than 99.9%. There is still a lot of optimization space from the perspective of lightweight.

0.13mm2 wire comparison 0.35mm2 and 0.5mm2 wires. If it is still a pure copper wire, there will be no big difference in conductive performance, but because there are fewer copper wires, the mechanical properties will be weakened. Very large risks. It is very easy to occur in areas such as terminal pressure connection, ultrasonic welding and other areas. Metal to improve its mechanical properties.

Among the major OECS factories, there are many BMW models using CUAG. In Volkswagen Group, Mercedes -Benz, and GM, there are two specifications of alloy wires: CUMG and CUSN, and some of the Ford models are used in CCS (copper bag steel) alloys. Because of the differences in alloy metal, CUSN's alloy price will be about 10% cheaper than CUMG, and the price of CUAG is more expensive than CUSN.

In summary, this article focuses on the lightweight application of CUSN and CUMG alloys of 0.13mm2.

1. 0.13mm2 wire application range

The layout area of the vehicle beam can be roughly divided into three parts: the chassis area, the engine compartment area and the inner cabin area. Taking traditional fuel vehicles as an example, the engine compartment environment is the worst, the chassis area is second, and the inner cabin is the best and most of the static area. For the promotion and application of the 0.13mm2 wire, it is recommended to use it in the inner cabin area. In the production process, you only need to consider terminal selection and ultrasonic welding requirements. In the chassis and engine compartment area, additional considerations are also required Dynamic use requirements, it is recommended to gradually promote and use it to the chassis area and engine compartment area when the supplier equipment input and the complete vehicle test are relatively complete.

When applying alloy wires in the vibration area of the vehicle, it is recommended to do a vibration test in the prototype phase to verify the mechanical strength of the wires to avoid the break from the wiring of the wires in the subsequent sports car or the high and low temperature environment.

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