Demand For New Energy And Energy Storage Continues To Surge, Laminated Busbar Industry Enters A Stage Of Rapid Development

With the rapid development of new energy vehicles, energy storage systems, industrial automation, and high-frequency power electronic equipment, the laminated busbar industry is entering a new stage driven by both demand and technology. Industry data shows that from 2021 to 2025, the Chinese laminated busbar market will maintain rapid growth, and this high growth rate is expected to continue in the coming years. Driven by multiple factors such as the "dual-carbon" target, power electronics upgrades, and the widespread adoption of high-voltage platforms, laminated busbars are gradually becoming a key component of new energy power connection systems.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In recent years, new energy vehicles have become a major driving force for industry growth. With the accelerated implementation of 800V high-voltage platforms, the demand for low-inductance, high-conductivity, and highly integrated connection solutions in vehicles has significantly increased. The application of laminated busbars for electric cars is expanding, particularly in electric drive systems, on-board charging systems, and battery packs. Compared to traditional wiring harness structures, laminated busbars can effectively reduce parasitic inductance, improve system stability, and enhance heat dissipation, thus offering more significant advantages in high-frequency and high-speed scenarios.

 

Meanwhile, the rapid expansion of the photovoltaic energy storage industry has also driven the growth in demand for high-power busbars. The demand for laminated busbars in high-power converters continues to increase, driven by energy storage PCS, inverters, and high-power converter systems. The widespread adoption of high-frequency SiC devices has placed higher demands on systems for low loss, low EMI, and high-voltage resistant structures, making laminated low-inductive busbars a key development direction for the industry. Some medium- and high-voltage energy storage systems are also beginning to adopt high-voltage exploration-proof inverter busbar structures to meet the safe operation requirements in complex environments.

 

In the fields of industrial automation, rail transportation, and communication power supplies, laminated busbars have also maintained steady growth. As equipment develops towards higher power density and miniaturization, the application ratio of multi-layer structure solutions, such as three-layer laminated busbars and multi-layer composite structure connection bars, continues to increase. These structures can effectively optimize current distribution, reduce system temperature rise, and improve overall space utilization.

 

In the rail transportation sector, composite busbars for train power supply, four-quadrant power modules, and subway laminated busbars are widely used in train power supply and converter module systems. From an industry chain perspective, upstream materials remain primarily copper foil, aluminum foil, insulating films, and adhesives, with the application of copper-aluminum composite materials continuing to increase. Some companies are beginning to focus on lightweight and high thermal conductivity composite materials to meet the dual demands of weight reduction and heat dissipation in new energy vehicles and energy storage equipment.

 

Midstream manufacturing is gradually upgrading towards automation and digitalization, with laser welding, automatic inspection, and high-precision hot pressing processes becoming increasingly widespread, further improving product yield and consistency.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In terms of technological development, PCB structure and intelligent integration have become important industry trends. PCB busbar structures can reduce the risk of partial discharge and improve electromagnetic compatibility performance in complex circuits. For high-frequency inverter systems, the demand for customized lambded busbars for IGBTs and IGBT lambded busbars continues to grow. Through electromagnetic and thermal simulation optimization, companies can further reduce system switching losses and improve overall operating efficiency.

 

Beyond the new energy field, laminated busbars are also gradually extending into communication equipment and data centers. Laminated bus bars for telecom power distribution and for rack-mount power distribution have been applied in high-density power supply systems to meet the requirements of servers, power modules, and large communication equipment for a stable power supply and spatial integration. In the network equipment field, laminated bus bars for internet router backplanes are also gradually becoming an important solution for improving equipment reliability.

 

Currently, the industry still faces some challenges. There is still a certain reliance on imports for high-end insulation materials, precision machining equipment, and some core processes. The certification cycle for high-end products is lengthy, especially for automotive-grade products, which have extremely high requirements for reliability and consistency. Furthermore, with the increasing number of industry participants, market competition is intensifying, and small and medium-sized enterprises face significant pressure in cost control and technological upgrades.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overall, the laminated bus bar industry has entered a period of rapid development. The continued expansion of new energy vehicles, energy storage systems, rail transit, and industrial power electronics equipment will further drive the market penetration rate of laminated busbars for complex busbar installations. In the future, with the continued deepening of the trends towards higher voltage, higher frequency, and system integration, the industry will see greater opportunities for technological upgrades in materials, structural design, automated manufacturing, and intelligent monitoring.