Designing high-voltage power distribution systems for Electric Vehicles (EVs) and industrial switchgears is a constant battle against heat and space. As current densities increase to support faster charging times and more powerful motors, traditional standard copper busbars are hitting their thermal limits.
To manage the massive heat generated by high currents, electrical engineers are often forced to increase the cross-sectional area of the busbar. This adds unacceptable weight and bulk to EV battery packs where space is at an absolute premium.
The engineering solution is not a bigger busbar; it is a purer material. Upgrading to C10100 Oxygen-Free Electronic (OFE) copper allows designers to maximize ampacity while minimizing footprint.
The Thermal-Electrical Connection
In metals, electrical conductivity and thermal conductivity are directly linked. Impurities in standard ETP (Electrolytic Tough Pitch) copper act as resistance points. When hundreds of amps push through these resistance points, the electrical energy converts into waste heat, leading to potential thermal runaway in densely packed battery modules.
Because C10100 is refined to a minimum purity of 99.99% with volatile elements strictly restricted, it offers virtually zero microscopic resistance. This purity translates directly to its guaranteed 101% IACS electrical conductivity
More importantly for EV designers, this ultra-high electrical efficiency results in exceptional thermal conductivity (391 W/m·K). A C10100 busbar will generate measurably less heat under heavy load than a standard copper equivalent, and it will dissipate any generated heat much faster. This allows engineers to specify thinner, lighter copper profiles without compromising the safety or efficiency of the high-voltage system.
Flawless Joining: Laser and Ultrasonic Welding
Beyond thermal management, assembling EV battery packs requires joining hundreds of individual cells to the main power bus. This is typically done via ultrasonic welding or laser welding-processes that are notoriously difficult with standard copper.
Standard copper contains trace amounts of oxygen (up to 400 ppm). Under the intense localized heat of a laser weld, this oxygen vaporizes, creating porosity (microscopic bubbles) in the weld seam. A porous weld increases electrical resistance, creates a physical weak point subject to vibration failure, and drastically reduces the lifespan of the battery module.
C10100 is completely oxygen-free (Max 5 ppm). When subjected to laser or ultrasonic welding, the melt pool remains stable and clean. The result is a deep, void-free, highly conductive weld joint that easily withstands the mechanical shocks of automotive applications.
Download C10100 Thermal & Electrical Properties Chart (PDF)
Certified Materials for High-Power Applications
A high-performance EV motor is only as reliable as the electrical path powering it. Sourcing inferior copper for custom battery contacts or high-current switchgear busbars will lead to overheating, energy loss, and critical failures.
At GNEE METAL, we provide the ultimate electrical path. Whether you are stamping foil connectors for individual lithium-ion cells or require heavy-duty C10100 flat bars for custom busbars for main power inverters, we deliver precision.
Our C10100 materials undergo rigorous SGS testing to ensure compliance with international high-purity standards. We guarantee the 99.99% purity and max 5ppm oxygen level required to achieve 101% IACS, backed by batch-specific Mill Test Reports (MTR).
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GNEE METAL Product Range
| Product Type | Shapes Available | Common Grades | Diameter/Thickness Range | Length/Width Range | Applications |
|---|---|---|---|---|---|
| Copper Tubes | Round, Square, Rectangular, Coiled | C10100, C10200, C11000, C12200, C12000 | OD: 0.5mm - 300mm Wall: 0.1mm - 20mm | Up to 6000mm or custom | HVAC, Plumbing, Heat Exchangers, Refrigeration, Hydraulic Lines |
| Copper Plates & Sheets | Flat Sheets, Perforated, Embossed, Tread Plate | C10100, C11000, C12200, C23000, C26000 | Thickness: 0.1mm - 200mm | Width: Up to 2500mm Length: Up to 6000mm | Electrical Busbars, Roofing, Cladding, Gaskets, Transformers |
| Copper Bars & Rods | Round Bar, Square Bar, Hexagonal Bar, Flat Bar | C10100, C11000, C14500, C17200, C18200 | Diameter: 1mm - 300mm | Length: 1000mm - 4000mm | Machined Components, Electrical Contacts, Busbars, Fasteners |
| Copper Wires | Round Wire, Flat Wire, Square Wire, Stranded, Braided | C11000, C11600, C17200, C17510 | Diameter: 0.05mm - 12mm | Coil weights: 1kg - 500kg | Electrical Wiring, Cables, Springs, Mesh, Welding Wire |
| Copper Strips & Coils | Thin Strip, Foil, Slit Coil, Profile Strip | C11000, C12200, C19400, C26000, C26800 | Thickness: 0.03mm - 5mm | Width: 2mm - 1000mm Coil ID: 300mm - 600mm | Transformers, Radiators, Shielding, Terminals, Connectors |
About Our Factory
We operate a full range of production lines including extrusion presses, cold drawing benches, high-speed rolling mills, slitting lines, and precision CNC machining centers, enabling us to produce copper tubes, plates, bars, wires, and strips entirely in-house. For quality assurance, we maintain a dedicated inspection laboratory equipped with spectral analyzers, universal testing machines, hardness testers, surface roughness testers, and optical measuring instruments. Every batch is tested for chemical composition, mechanical properties, and dimensional accuracy before shipment. Our production capacity reaches 500+ tons per month, and we hold ISO 9001:2015 certification with full traceability from raw material to finished product. Whether you need standard mill stock or custom-processed components, we deliver precision copper products with short lead times and complete material certification.
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