High-Conductivity Pure Copper Busbars for EV Battery Packs

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Product Specifications
Name： Pure Copper Busbar for New Energy Vehicles
Standard： ASTM B187 / B152, UNS C11000, RoHS Compliant, REACH Compliant
Material： C11000 (ETP Pure Copper, ≥99.9% Cu), Optional Tin-Plated
Surface： Mill Finish or Bright Tin Coating, Optional Pre-Drilled Holes
Width： 10mm – 200mm
Thickness： 1mm – 15mm
Length： 500mm – 4000mm (custom cut-to-length available)
Product Features: Ultra-high electrical conductivity for minimal power loss · Excellent flexibility for complex routing in battery packs · Superior thermal dissipation to manage heat buildup · Outstanding corrosion resistance with optional tin plating · High mechanical strength with easy bending · Low contact resistance for reliable connections · Consistent performance in vibration and thermal cycling
Application Field: New energy vehicle battery packs (EV/HEV/PHEV), Power distribution in electric drivetrains, Battery management systems (BMS), Charging station infrastructure, Energy storage systems (ESS), Renewable energy inverters, High-voltage electrical connections in commercial vehicles

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Pure Copper Busbar for New Energy Vehicles – Process & Quality Assurance Statement
Our pure copper busbars are specifically optimized for new energy vehicle applications, delivering the highest conductivity and flexibility needed for efficient, safe power transfer in compact battery assemblies.

Key process features

Production focuses on high-purity copper with careful processing to maintain excellent electrical properties and formability:
●Material Rolling: Electrolytic tough pitch copper is hot rolled into wide coils, followed by cold reduction for precise thickness and superior surface quality.
●Annealing Control: Protective atmosphere annealing achieves the ideal soft temper for easy bending without sacrificing conductivity.
●Precision Slitting: Coils are slit to exact widths with clean, burr-free edges.
●Optional Tin Plating: Electroplating applies a uniform tin layer for enhanced solderability and long-term oxidation protection.
●Custom Fabrication: Pre-drilling, bending, or chamfering performed to your specifications for drop-in installation.
●Surface Cleaning: Thorough degreasing ensures pristine contact surfaces ready for immediate use.
●Secure Packaging: Bars are interleaved and bundled to prevent damage and maintain flatness during global shipping.

Quality control system

● Complete traceability from copper cathode to finished busbar
● Test reports including conductivity, plating thickness, and bend performance provided with every batch
● Sample retention ≥3 years for third-party verification (SGS, BV, TÜV, etc.)
● 100% inspection of essential parameters:
• Chemical purity and conductivity (>101% IACS typical)
• Dimensional accuracy (laser measurement; typical tolerance ±0.1mm on thickness/width)
• Plating uniformity and adhesion (where applicable; X-ray fluorescence + bend testing) • Surface quality (visual checks for defects or oxidation)
• Flexibility and mechanical strength (bend radius testing on samples)
● Internal standards exceed ASTM B187 requirements. Typical C11000 properties: Excellent current-carrying capacity with minimal heat generation, Superior flexibility for tight-radius bending, Proven reliability in high-vibration EV environments.
● ISO 9001:2015 certified production ensures every pure copper busbar for new energy vehicles delivers the efficiency, safety, and durability your battery systems demand.