Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.

New Energy Vehicles Actually Use So Many Copper Materials, Come and Learn About It...

Current Status of Copper Processing Industry in China

It is well-known that China is one of the world's leading producers and consumers of copper materials. Copper, a familiar material to many, plays a crucial role not only in our daily lives but also as a foundational material for national economic development and the advancement of high-end technologies.

In China, the copper processing industry faces the challenge of being large but not strong. While there is an oversupply of ordinary products, there is a heavy reliance on imports for high-end products. For instance, large-diameter, highly corrosion-resistant copper alloy pipes used in marine engineering equipment, high-performance copper alloy-coated wire used in advanced electronic devices, and materials like Cu-Ni(-Co)-Si and Cu-Ci-Zi crucial for manufacturing next-generation large-scale integrated circuits and precision connectors for high-end electronic components are primarily dependent on imports.

Furthermore, China boasts the world's largest industrial scale, with overall equipment and certain technologies approaching or reaching international advanced levels. However, despite this, the country lags behind in overall technological processes, exhibits low production efficiency, and has high resource and energy consumption.

In addition to these challenges, insufficient basic research and weak innovation capabilities are evident, and original achievements in comparison to foreign counterparts are not advantageous.

Finally, in China's copper processing industry, fierce competition exists in the mid-to-low-range products, while critical products for high-end manufacturing heavily rely on imports.

As a leading enterprise in China's copper processing industry,Ningbo Jintian Copper (Group) Co., Ltd., has been committed to creating a global influence in copper processing for over 30 years, contributing to modern industrial civilization.

Application of High-Performance Copper Alloy Materials in the Automotive Field

According to authoritative statistics, traditional automobiles use 23 kg of copper for internal combustion engines, hybrid electric vehicles use 40 kg, plug-in hybrid electric vehicles use 60 kg, and electric vehicles use 83 kg. With the continuous development of new energy vehicles, the demand for copper in the automotive industry is expected to increase.

In addition to this, the charging industry, which is associated with electric vehicles, also has a strong demand for copper. The main electrical equipment for charging stations includes power cables and transformers, as well as circuit breakers, fuses, various switches, connectors, and more. Major copper components in charging piles include charging cables, charging machine modules, connectors, various switches, etc.

High-performance copper alloy materials used in the automotive industry include:

  • Complex Brass: Used in automotive synchronized ring structures, such as friction components in the structure. Excellent wear resistance; stable friction coefficient; excellent mechanical properties; no wear on mating conical surfaces; good oil compatibility; good heat resistance/thermal conductivity; easy processing and low cost.

  • Dispersion Strengthened Copper (DSC): Used in resistance welding, where electrical resistance is employed to generate heat for welding. Sufficient high-temperature hardness and strength; high oxidation resistance with a tendency to form alloys with the welded material; suitable electrical and thermal conductivity at both room temperature and high temperatures; good processing performance. DSC is a copper alloy with the best combination of physical and mechanical properties.

  • Copper-Nickel-Silicon (Cu-Ni-Si): Utilized in various automotive components. Offers high strength, elasticity, good electrical conductivity, and resistance to stress relaxation. The hardness of the alloy increases rapidly to a peak and then slowly decreases, eventually stabilizing. The alloy's hardness is optimal when Ni/Si is in the range of 3.6-5.1.

  • Copper-Chromium Series (Cu-Cr): A typical age-hardening alloy used in various automotive components. High-temperature solution treatment and deformation heat treatment technology; the chromium content directly affects the solution temperature; a reasonable match between solution treatment and subsequent deformation heat treatment directly determines alloy performance. The bending forming and mechanical performance control technology of copper-chromium alloys depend on age hardening and work hardening. Zirconium substitution technology is crucial for choosing suitable alternative elements based on the application scenario, considering the comprehensive impact of alloy elements on the performance of copper-chromium alloys.

Conclusion and Recommendations

High-performance copper alloy materials are widely used in various automotive systems, including cooling systems, electronic power systems, braking systems, and hydraulic systems. As the automotive industry continues to evolve toward electrification and intelligence, higher demands are placed on the comprehensive performance of copper alloy materials. Considering material costs and the fixation of materials for vehicle models, current materials for automotive components mainly consist of brass, bronze, and some C70250 alloys.

The widespread use of high-performance copper alloys requires collaborative efforts from production, academia, research, and application sectors. This collective push will drive both the automotive and copper processing industries toward higher-end development.

Ningbo Jintian Copper's series of high-end copper alloy rods, wires, plates, strips, copper bars, and enameled copper wire have extensive applications in the automotive field. Additionally, Jintian Copper can provide high-performance electromagnetic wires, neodymium iron boron magnetic materials, and other products, focusing on supporting new energy vehicle drive motor components. It stands out as one of the few high-end manufacturing enterprises in the market that can offer one-stop procurement services for copper and copper alloy raw materials for new energy vehicles.