Engineered to meet the rigorous thermal dissipation, high vibration resistance, and electrical dielectric isolation requirements of Spanish OEMs and European Tier-1 electrical equipment builders.
Spain has emerged as a powerhouse of the European industrial and energy transition, driven by robust national decarbonization frameworks and massive industrial electrification investments.
As the second-largest automotive manufacturing nation in Europe, Spain is undergoing a profound structural shift toward electric vehicles (EVs) supported by the PERTE VEC (Strategic Project for the Recovery and Economic Transformation of the Electric and Connected Vehicle). From automotive clusters in Catalonia, Castile and León, Galicia, and Aragon to the state-of-the-art battery gigafactory developments in the Valencia region (Sagunto), the demand for reliable, high-ampacity battery busbar interconnects has multiplied exponentially.
Modern EV traction battery packs operate under 800V architectures and ultra-fast charging regimes exceeding 350 kW. This necessitates copper battery busbars that offer minimum internal resistance, ultra-pure oxygen-free copper (OFHC Cu-ETP/Cu-OF), superior heat dissipation, and micro-precision tolerances that mitigate localized thermal hotspots.
Optimized for high-voltage commercial and passenger EV platforms requiring exceptional dielectric isolation and reduced packaging weight.
Engineered for automated module-to-module (M2M) and cell-to-pack (CTP) laser and ultrasonic welding lines deployed across Spain.
Spain boasts Europe’s highest photovoltaic solar radiation density, leading to massive solar park installations and hybrid Battery Energy Storage Systems (BESS) across Andalusia, Extremadura, Castile-La Mancha, and Murcia. High-capacity containerized energy storage units (up to 5MWh per container) depend heavily on custom rigid copper busbars, epoxy-insulated power bars, and laminated flexible shunts to interconnect lithium iron phosphate (LFP) battery racks to central PCS inverters.
Given the arid climates and extreme summer operating temperatures experienced in the Iberian interior, battery busbars must demonstrate unmatched thermal cycling stability, anti-oxidation plating (tin, silver, or nickel), and zero electrical degradation over 15–25 years of intensive grid-balancing service.
Formulated with premium epoxy coatings rated for -40°C to +150°C continuous duty in desert and southern solar farm conditions.
Engineered high-cross-section copper busbars handling 3000A+ continuous current loads with negligible I²R losses.
99.95%+ pure copper assuring ≥100% IACS electrical conductivity for minimum energy loss.
Fluidized-bed epoxy, heat-shrink PVC/PET/PVDF, and polyamide overmolding options.
Multilayer laminated foil and braided designs absorbing dynamic road and rail mechanical stress.
Full adherence to European chemical safety, environmental directives, and UNE-EN standards.
Our conductive connection portfolio serves the full spectrum of Spain's heavy industrial, transport, and energy infrastructure sectors.
Serving tier suppliers and OEM assembly plants in Martorell, Vigo, Zaragoza, and Valladolid. Applications include cell-to-cell interconnections (prismatic, blade, and cylindrical cells), module-to-pack high-voltage distributors, inverter DC links, and on-board chargers (OBC) where flexible laminated copper connectors prevent terminal stress from thermal expansion.
Supplying utility projects developed by Iberdrola, Endesa, and international solar EPCs across Spain. Custom rigid and composite busbars route massive currents inside containerized battery enclosures, power conversion systems (PCS), step-up transformers, and medium-voltage switchgears with high surge withstand capacity.
Spain operates the second-largest high-speed rail network globally (AVE). Our flexible copper braided wires and stranded jumpers provide grounding protection, traction converter power distribution, pantograph flexible ties, and auxiliary battery bank interconnects under continuous mechanical shock and vibration.
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.
Our rapid prototyping and high-volume automated manufacturing lines meet the most demanding automotive and industrial power distribution requirements in Europe.
Utilizing solid-state diffusion bonding technology to fuse ultra-thin copper foils without welding flux or filler metals. This process eliminates interface contact resistance and delivers solid-bar electrical conductivity across flexible segments.
Applying uniform electrostatic epoxy insulation (0.5mm - 2.0mm) to complex 3D-bent rigid copper busbars. Guarantees high breakdown voltage (>10 kV/mm), UL94-V0 fire resistance, and tight dimensional control for compact pack enclosures.
Equipped with 3D coordinate measuring machines (CMM), micro-ohm resistance meters, automated salt spray testing chambers, thermal shock chambers, and tensile testers ensuring 100% compliance with client PPAP Level 3 requirements.
Explore our full line of flexible stranded wires, epoxy coated rigid bars, laminated foil connectors, and copper-aluminum composite conductors designed for European industrial standards.
Everything you need to know about customizing, prototyping, and integrating Bridgold copper battery busbars into Spanish projects.
We utilize high-purity electrolytic tough pitch copper (Cu-ETP / C11000) and oxygen-free high-conductivity copper (Cu-OF / C10200) with copper content exceeding 99.95% and electrical conductivity ratings equal to or greater than 100% IACS, ensuring minimum voltage drops in high-rate discharge battery systems.
Our dedicated European application engineering support allows rapid processing of 2D/3D CAD files (STEP, IGES, DXF). We provide DFM (Design for Manufacturability) reviews within 24 hours and can supply rapid prototype samples in as few as 5 to 10 working days for automotive validation and testing.
To prevent galvanic corrosion and oxidation in Mediterranean maritime or arid inland conditions, we provide Electro-Tin (Sn), Bright/Matte Nickel (Ni), Silver (Ag), and Gold (Au) platings with salt spray corrosion resistance certified from 48 to over 240 hours according to ISO 9227 standards.
Yes. All manufacturing facilities operate under IATF 16949, ISO 9001, and ISO 14001 quality and environmental management systems. All materials strictly comply with European RoHS, REACH, and CE regulations, and insulation materials meet UL94-V0 flammability standards.