Product Overview
Insulated Flexible Copper Busbars are engineered for high-current electrical connections where rigid busbars or complex cable harnesses are impractical. Composed of high-conductivity laminated or braided copper layers protected by a durable, high-dielectric insulation sleeve, these busbars offer controlled flexibility, allowing for tight bending radiuses without compromising electrical or mechanical performance.
This versatile solution is widely adopted in Energy Storage Systems (ESS), Electric Vehicle (EV/HEV) power electronics, and industrial power distribution units (PDUs) where space optimization and vibration resistance are critical.
Technical Specifications & Material Options
Optimized for global procurement standards and engineering verification.
|
Parameter |
Specification / Capability |
|
Conductor Material |
High-purity electrolytic copper (Cu ≥ 99.9%) |
|
Structure Options |
Multi-layer laminated copper foils or flexible braided copper |
|
Surface Plating |
Untinned, Tin-plated, Silver-plated, or Nickel-plated |
|
Operating Voltage |
Up to 1000V AC / 1500V DC (Customizable for higher voltage) |
|
Temperature Range |
-40°C to +125°C (Up to +150°C with specialized silicone coating) |
|
Flame Retardancy |
UL 94V-0 Rated (Self-extinguishing) |
|
Insulation Materials |
• PVC: Standard, cost-effective for general industrial electronics. • XLPE: Higher thermal resistance and enhanced aging stability. • PET Film: Ultra-thin profile for extremely limited clearance. • Silicone: Engineered for extreme environments and maximum flexibility. |
|
Compliance & Certifications |
CE, RoHS, REACH Compliant (Manufactured under ISO 9001 / IATF 16949 standards) |
Key Advantages for Industrial Applications
High-Current Transfer in Compact Spaces
The flexible, multi-layered copper structure allows stable current conduction while adapting to complex, tight spaces. It eliminates the need for bulky cable routing, significantly reducing the footprint inside electrical enclosures.
Reduced Connection Points & Lower Failure Risk
Compared to traditional cable lugs and bolted joints, the integrated copper busbar structure minimizes the number of mechanical connection points. This directly lowers contact resistance and mitigates the risk of joint loosening or oxidation over long-term operation.
Superior Vibration Absorption & Thermal Tolerance
Designed specifically to absorb mechanical stress caused by continuous vibration and thermal expansion/contraction. This makes it an ideal choice for heavy-duty EV battery packs, inverter cabinets, and mobile/containerized energy storage units.
Streamlined & Error-Free Assembly
Replaces cluttered cable wiring with a single, structured, pre-shaped conductor path. This layout layout improves assembly line efficiency and minimizes manual wiring or polarity errors during system integration.
Typical Applications
Energy Storage Systems (ESS)
Battery module-to-module interconnection and pack-level current distribution.
Electric Vehicles (EV / HEV)
Battery pack main lines, Power Distribution Units (PDUs), and traction inverter connections.
Industrial Power Electronics
IGBT modules, Uninterruptible Power Supplies (UPS), heavy-duty rectifiers, and frequency switchgears.
Renewable Energy Systems
Solar inverters, wind power conversion systems, and combiner boxes under continuous load variations.
Custom Engineering & OEM/ODM Support
We provide comprehensive design-to-manufacturing support to match your precise system blueprints:
Cross-Section Cross-Matching: Precise copper thickness and width selection based on your continuous and peak current load requirements.
3D Form Bending: Custom pre-bent shapes according to your 2D/3D CAD drawings for drop-in installation.
Advanced Terminal Processing: Custom punching, drilling, and integrated connector mounting.
Rapid Prototyping: Fast turnaround from engineering drawings to physical samples for validation and testing.
Quality Control & Testing Standards
Every production batch undergoes rigorous testing to guarantee field reliability and zero-defect delivery:
Material Verification
Copper purity and conductivity inspection.
Dimensional Accuracy
Precision control of tolerance before and after insulation wrapping.
Dielectric Strength Testing
High-voltage withstand testing to ensure insulation integrity.
Bending Durability
Fatigue testing for flexible structures to simulate long-term thermal cycling and vibration.
Why Global OEM Buyers Choose Us
Total Cost Reduction: Pre-shaped busbars drastically reduce assembly line hours, manual labor, and material waste compared to oversized cabling.
Automated Production Readiness: Consistent batch quality with tight tolerances, perfectly suited for automated high-volume manufacturing.
Proven Supply Chain Reliability: Full traceability from raw copper cathode to finished, insulated product with transparent lead times.
FAQ
Q: What makes insulated flexible busbars better than cable assemblies?
A: They reduce the number of connection points, which helps improve electrical stability and lowers failure risk caused by loose terminals or oxidation.
Q: Can it be used in high-current EV battery systems?
A: Yes. It is commonly used in EV and hybrid battery systems where space, vibration resistance, and stable current transfer are critical.
Q: What insulation materials are available?
A: PVC, XLPE, PET film, and silicone coatings are available depending on temperature, voltage, and environmental requirements.
Q: Can you customize shapes based on drawings?
A: Yes. We can manufacture straight, L-shaped, U-shaped, or complex 3D formed busbars based on customer design files.
Q: How do I select the correct cross-section?
A: It depends on current load, temperature rise limit, and installation environment. Engineering evaluation is recommended for precise sizing.
Q: Is surface plating necessary?
A: It is optional but recommended in corrosive environments or where improved contact reliability is required.
Q: What industries use this product most?
A: Energy storage, EV manufacturing, industrial inverters, and renewable energy systems are the main applications.
Q: What is the main manufacturing focus of this product?
A: Consistency in conductivity, insulation integrity, and mechanical flexibility under repeated bending cycles.
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