In the face of current automobile exhaust pollution, shortage of copper metal resources, and cost competition of whole vehicles, reducing the weight of automobiles, reducing fuel consumption, reducing emissions, and compressing costs has become a hot research topic in the automotive industry. The proportion of electrical equipment in the composition of modern cars is increasing, and the wiring harness of the automotive nervous system is an important component of electrical equipment. In this context, the research on lightweight technology of automotive wiring harnesses has become an inevitable trend. By reducing the quality of wiring harnesses, the goal of reducing vehicle weight, reducing costs, improving fuel economy, and reducing emissions is achieved.

At present, aluminum power cords have been widely used in passenger cars in China. For example, aluminum power cords are used in some series of vehicle models such as Volkswagen, General Motors, and Toyota, but they have not yet been applied in commercial vehicles domestically. Due to its advantages of light weight, low cost, abundant resource reserves, and stable and reliable electrical performance, aluminum wires have gradually become the best choice for automotive wires. However, aluminum wires also have certain drawbacks in application, such as: aluminum wires themselves are easily oxidized to form aluminum oxide, which is not easy to weld, and the connection between aluminum wires and terminals is difficult; In addition, aluminum is relatively soft, and the mechanical and electrical properties after crimping are relatively low. It is prone to galvanic corrosion and gap corrosion in the crimping area. The harsh vibration environment at the engine position of commercial vehicles also tests the mechanical properties of aluminum wires. If the above issues are improved or overcome, the application of aluminum wires in commercial vehicles will become possible.