With the development of new energy vehicles, the demand for new energy wiring harnesses is increasing

Due to the structural characteristics of new energy vehicles, with batteries as the main energy, the demand is greater. The in-car new energy wiring harness in the new energy vehicle mainly provides high voltage and strong electric power supply for the vehicle. They belong to the high safety parts of new energy vehicles, with the characteristics of large voltage/current, large diameter wire number:

(1) High voltage and high current: the battery voltage of the new energy vehicle can reach 6000V, and the corresponding voltage rating of the wire can reach 3000A, and the voltage rating of the battery wire of the traditional fuel vehicle is less than 60V;

(2) Increased demand for large wire diameters: new energy vehicles need large wire diameters, such as high-voltage batteries, inverters, transformers, etc. There are a lot of them;

(3) Security, wiring, sealing, weight and other challenges: high voltage and high current pose greater challenges to the safety and sealing performance of new energy wiring harness.

Automobile electrification trend opens new market of new energy wiring harness

As the main carrier of electric vehicle power output, new energy wiring harness is one of the key components of vehicle performance and safety. The high voltage wiring harness in the car mainly provides high voltage and strong electric power supply for new energy vehicles. It belongs to the high safety parts of new energy vehicles. Compared with the traditional in-car low-voltage use, the in-car high-voltage power transmission has higher requirements on the electrical performance, shielding performance, mechanical performance and durability of the wiring harness, which has the characteristics of large voltage/large current and large diameter wire number.

In order to ensure the safety of high voltage and large current harness, it is very important to choose the insulating material used for vehicle cable. Early use of insulating materials of automobile cable is mainly PVC, but PVC lead content is high, harmful to human body, in recent years, gradually by people with LSZH(low smoke halogen-free), TPE(thermoplastic elastomer), XLPE(crosslinked polyethylene), silicone rubber and other materials are replaced. And these materials can also meet the requirements of wear resistance and flame retardant.

Light weight is the main keynote of future automotive wiring harness development

As an important part of the vehicle, automobile wiring harness accounts for 2% of the total weight of the vehicle. With the increase of automobile electronic equipment, lightweight wiring harness is becoming more and more important to reduce the energy consumption of bicycles. Copper wire accounts for 75% of the weight of automobile wiring harness and is the main direction of lightweight. Automotive wiring harness lightweight mainly includes: material lightweight, structure lightweight, layout optimization.

Aluminum is expected to replace copper in the light weight trend

Aluminum, which is two-thirds lighter than copper, is a building material in plentiful supply. Unlike copper, which has limited resources available, aluminum is not a speculative metal and prices are relatively stable and lower than copper. The conductivity of aluminum is about 60% lower than that of copper, which is easy to oxidize and produce oxide film. Aluminum has low density, low price and reliable source, but as a conductive material, it has low tensile strength and poor welding performance.

Lightweight automotive wiring harnesses are an iterative and time-consuming process, along with the enrichment of vehicle features. We expect the demand for bicycle wiring harnesses to rise over the next five years.