High-reliability flexible and rigid conductors optimized for high-voltage battery systems and vehicle power distribution.
How flexible aluminum conductor engineering solves mechanical fatigue, thermal stress, and gravimetric density challenges in EV battery packs.
The global transition toward sustainable transportation has accelerated the evolution of electric vehicle (EV) battery architectures from conventional modular arrangements to Cell-to-Pack (CTP), Cell-to-Chassis (CTC), and ultra-high-voltage 800V/1000V Silicon Carbide (SiC) platforms. In these sophisticated electrical topologies, the electrical interconnect system serves as the circulatory network of the vehicle. While electrolytic copper has historically been the primary choice for electrical conduction, the aggressive pursuit of vehicle lightweighting, increased volumetric energy density, and structural mechanical compliance has propelled Aluminum Braided Wire to the forefront of automotive engineering.
Aluminum braided wire consists of precision-woven multi-strand aluminum micro-filaments (typically utilizing high-conductivity 1xxx or 6xxx series alloys) configured in a tubular, flat, or custom profile. This architecture yields an interconnect that combines exceptional electrical ampacity with high mechanical flexibility, three-dimensional dynamic fatigue resistance, and dramatic weight reduction compared to rigid bars or solid cabling.
With an elemental density roughly one-third that of copper (2.70 g/cm³ vs. 8.96 g/cm³), aluminum braided systems achieve up to a 50% mass reduction for equivalent current capacity, directly expanding vehicle driving range and reducing curb weight.
The multi-strand woven configuration absorbs multi-axial dynamic vehicle vibrations, chassis flex, and thermal expansion shocks without transmitting mechanical shear stress to fragile prismatic cell terminals.
The high surface-area-to-volume ratio of braided geometries facilitates rapid convective heat dissipation during ultra-fast DC charging cycles (350kW+), mitigating localized hotspot formation within the battery enclosure.
From high-density traction battery enclosures to grid-scale energy storage, aluminum braided conductors ensure fail-safe performance.
In high-capacity lithium-ion battery modules (LFP, NMC, Solid-State), prismatic and blade cells expand and contract during continuous charge-discharge cycles. Aluminum braided wire bridges eliminate mechanical stress on laser-welded busbar joints, preventing terminal cracking and contact resistance degradation over thousands of operational cycles.
Electric vehicle PDUs require compact routing capable of carrying hundreds of continuous amperes while accommodating tight bend radii. Flexible aluminum braided conductors enable complex routing in confined spaces without the structural springback or assembly strain associated with rigid metal busbars.
The high-frequency switching and intense thermal cycling present between the traction inverter and the electric motor require flexible jumpers with low skin-effect impedance and high electromagnetic shielding integrity. Woven aluminum grounding and power braids deliver stable low-loss pathways under extreme mechanical shock.
Commercial and utility-scale containerized energy storage systems demand cost-effective, high-current interconnection with high seismic and vibration resilience. Aluminum braided conductors provide scalable, corrosion-resistant bridging between battery racks, high-power DC disconnects, and central power conversion systems (PCS).
Utilizing aluminum in high-reliability automotive power circuits requires addressing galvanic corrosion and natural aluminum oxide layer formation. Modern manufacturing protocols overcome these technical barriers through advanced terminal processing:
Zhejiang Bridgold Copper Tech Co., Ltd. is a national-level high-tech enterprise specializing in the research, development, design, and production of flexible conductive connection products. The company is located in the Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province, occupying 46,000 m² of land with a total construction area of nearly 100,000 m².
Bridgold is dedicated to the intelligent manufacturing of a comprehensive range of flexible conductive products, including:
✓ Copper Braided Wires
✓ Stranded Copper Wires
✓ Flexible Braided Copper Wire Busbar
✓ Flexible Laminated Copper (Aluminum) Busbar
✓ Rigid Copper (Aluminum) Busbar
Our products are widely used in electric vehicles, energy storage systems, charging infrastructure, wind power, industrial control, rail transit, and medical equipment. With a strong focus on quality and innovation, Bridgold has built a solid reputation both domestically and internationally. Our products are sold throughout China and exported to North America, Europe, Southeast Asia, the Middle East, Africa, and beyond.
As a trusted supplier to many Fortune Global 500 companies and industry leaders, Bridgold has established long-term, stable partnerships with renowned enterprises such as:
GE, ABB, Siemens, Bombardier, CRRC, Vestas, Foxconn, CSSC, Sungrow
In 2010, the company entered the qualified supplier list for Siemens Healthcare and GE Wind Energy, marking a significant milestone in its global expansion.
To date, our copper braided wire series products rank No.1 in global market share, a testament to our manufacturing excellence and customer trust.
In the new energy vehicle sector, our products have been successfully applied in major automotive brands such as Mercedes-Benz, BAIC, SAIC, JAC, NIO, FAW, and Great Wall Motors, ensuring the safety and performance of automotive electrical connection systems.
As of 2025, Bridgold has accumulated 51 national patents, including 16 invention patents. The company participated in the formulation of the national standard GB/T 37133 “High-voltage connection system for electric vehicles”. Our core technologies cover cutting-edge fields such as superconducting connection materials, high thermal conductivity composites, and intelligent manufacturing processes.
Bridgold has established a professional copper connection technology R&D center with strong research capabilities, recognized by the Zhejiang Provincial Government as a “Zhejiang Provincial Enterprise Technology R&D Center” and “Zhejiang Provincial Enterprise Technology Center”. These certifications ensure comprehensive technical quality control throughout the entire process—from raw material quality analysis and manufacturing process development to product quality inspection.
In response to global industrial upgrading and green transformation, Bridgold continues to advance intelligent manufacturing and digital transformation. We have invested in the development and introduction of high-end manufacturing and testing equipment, building a personalized, digitalized, efficient, and standardized intelligent manufacturing system. The company actively promotes the standardization of products and technologies by participating in the formulation of industry standards. Through industry-university-research collaboration with universities and research institutions, we jointly tackle common technical challenges in the industry, building distinctive technological advantages.
Explore our complete catalog of precision engineered flexible, rigid, and composite connection solutions.
