Laminated Foils Flexible Copper Busbar
Products Description
A Laminated Foils Flexible Copper Busbar is a flexible conductive component formed by stacking multiple layers of ultra-thin copper foil with a thickness between 0.03 mm and 0.5 mm, and bonding or brazing the ends together using high-current heating.
1. Superior Physical Flexibility: Unlike rigid copper busbars, flexible connectors maintain their cross-sectional area (current-carrying capacity) while possessing excellent bending and torsional compensation capabilities. This allows them to move freely within the compact space of a battery pack.
2. Excellent Temperature Rise Control: By increasing the surface area perimeter, flexible connectors offer better heat dissipation performance for the same cross-sectional area, effectively reducing the risk of temperature rise during high-current operation.
Main Functions: Six Core Roles to Ensure Stable Operation of Electrical Systems
High Current Transmission Function
As a core conductive component in new energy vehicle battery packs and electrical equipment, Copper Foil Flexible Busbars achieves low-loss transmission of high-power electrical energy, meeting the needs of fast charging and full-load operation. Small sizes are suitable for currents of 500A-2000A, while large sizes can carry currents exceeding 5000A.
Flexible Connection and Displacement Compensation
Multi-Layer Copper Foil Bus Bar for Electricity System compensates for equipment installation errors (±5mm), thermal expansion and contraction displacement, and operational vibration, avoiding breakage and poor contact caused by stress concentration in rigid connections.
Thermal Management Optimization Function
The multi-layer copper foil structure increases the heat dissipation area, reducing the temperature rise of connection parts by 15-40%, effectively preventing safety hazards such as insulation aging and increased contact resistance caused by local overheating, and improving system safety and reliability.
Electrical Safety Assurance
Low resistance reduces energy loss and minimizes the risk of overheating; insulation prevents short circuits; flexible structure avoids arcing caused by loose connections, providing multiple safety guarantees for the electrical system.
Technical Features: Microscopic Engineering Breakthroughs
Ingenious Avoidance of the Skin Effect: In high-frequency alternating current environments, current tends to distribute towards the conductor surface (skin effect). The structure of multilayer thin copper foil essentially greatly increases the conductor's specific surface area, allowing high-frequency current to be more evenly distributed across each layer, effectively reducing high-frequency AC resistance.
Extreme Voltage Drop in Interlayer Contact Resistance: Improperly treated contact surfaces between layers can generate enormous contact resistance. Our core technology lies in using special surface micro-treatment to achieve a large-area, atomic-level tight bond between adjacent copper foils under pressure, reducing interlayer resistance to a negligible level.
Precise Thermal Resistance Management: Heat dissipation efficiency is crucial during high-current flow. The tiny gaps between the multilayer structures, when combined with insulating heat-shrink tubing or injection-molded housings, form miniature heat dissipation channels. Compared to solid copper busbars, the heat dissipation area increases exponentially, preventing the formation of localized hot spots.
Detail Showcase: Quality Hidden in the Details
Surface Smoothness
Observe the cross-section of the solder joint; Copper Foil Laminated Bus bar exhibits a dense metallic luster, free of pores and impurities.
Surface Finish
The surface is free of scratches and oxidation discoloration; edges are rounded and deburred to protect the insulation layer from damage.
Coating Uniformity
Coating thickness is strictly inspected according to international standards, ensuring a corrosion protection period of over 10 years.
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Laminated Copper Electrical Shunts are not merely connectors; they are crucial components for achieving efficient, safe, and lightweight designs in modern high-power systems. Whether it's a new energy vehicle battery system or large-scale electrical equipment, choosing structurally sound and technologically mature copper foil flexible connectors will significantly improve overall performance and long-term reliability.
If your project is seeking a copper foil flexible connector supplier with custom development capabilities, batch consistency control, and engineering collaboration experience, please submit your drawings or application requirements. We will provide you with a more suitable engineering solution.
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