Custom Flexible Copper Foil Laminated Busbars
Products Description
The Custom Flexible Copper Foil Laminated Busbars are a flexible connection assembly formed by stacking multiple layers of ultra-thin copper foil in a specific direction and then welding them together under high pressure to create a single conductor.
Compared to traditional copper braided tape, its conductive path is more stable; compared to rigid copper busbars, it offers stronger displacement compensation and vibration resistance.
Its core structure typically consists of the following parts:
Multi-layer high-conductivity copper foil
Welded connection area
Formed terminal area
Insulating protective layer (optional)
Heat-shrink tubing or insulating overlay (optional)
The product can be fully customised to suit the equipment installation space, rated current, connection method, and operating environment.
Key Functions: System-Level Value of Dynamic Electrical Connections
| Current Carrying and Low Impedance Transmission | The multi-layer parallel structure enables continuous transmission of large currents (hundreds to thousands of amperes), with DC resistance down to the micro-ohm level, minimal contact voltage drop, and significantly lower energy loss than cable solutions. |
| Three-Dimensional Spatial Routing and Tolerance Compensation | Within the battery pack, between cell modules and between inverter power modules and capacitor banks, the Flexible Copper Foil Busbar with Laminated Copper Shunts can be arranged along arbitrary curved surfaces, absorbing displacement caused by cell expansion, chassis torsional deformation, and thermal expansion and contraction, preventing cracking or loosening of rigid connections. |
| Vibration and Shock Isolation | Chassis vibrations in new energy vehicles and short-circuit electrodynamic shocks in power switchgear are buffered by the interlayer slip mechanism, protecting bolted connections and power device terminals from fatigue damage. |
| Synergistic Thermal Management | The large surface area of the copper foil and the interlayer gaps form radiation and convection heat dissipation channels, making the Flexible Copper Foil Bus bar for EV Battery Packs itself a shortcut for heat conduction between the heat source and the radiator, reducing reliance on independent cooling systems. |
| Improved assembly efficiency | Integrated flexible busbars replace the traditional multi-component solution of "copper busbar + cable + terminal + sheath", reducing assembly steps and material types, eliminating the risk of wiring errors, and shortening production line cycle time. |
Manufacturing Advantages: Agile Customization Driven by Digital Twins
In the B2B engineering field, the efficiency of non-standard customization often constrains project progress. We are reshaping the manufacturing process with digitalization.
Parametric Modeling and Digital Twin Verification: Customers only need to provide a 3D model and electrical parameters. Our engineering team automatically generates the number of copper foil layers, unfolded length, and bending compensation through a parametric platform. Before manufacturing, assembly interference checks and thermal stress simulations are performed using digital twin technology to ensure the first piece is qualified.
Flexible Production Lines and Agile Delivery: Breaking away from the rigid mode of traditional hard mold pressing, we adopt CNC bending and flexible tooling systems. Whether it's a few centimeters long connecting Copper Foil Flexible Connector Transformer Parts for battery cells or several meters long main busbars for switchgear, we can achieve rapid switching between molds without molds or with low-cost molds, greatly shortening the delivery cycle of engineering prototypes and perfectly supporting flexible production of small batches and multiple shipments.
Detailed Specifications
End Section
After cutting, the copper foil layers should be seamlessly fused together, with no obvious boundaries (diffusion soldering) or a uniform thin layer of solder (brazing). Penetrating pores or incomplete solder penetration are strictly prohibited.
Flexible Copper Foil Surface
Copper Foil Laminated Flexible Bus Bars for New Energy Battery should have a uniform matte copper color, free of oxide spots, interlayer adhesion, and twisted wrinkles. A clear "rustling" sound should be heard when lightly touched with a finger.
Insulation Layer Edge Coverage
If dip coating is used, the end transition should have rounded corners, with no sharp edges piercing the insulation; if heat shrink tubing is used, both ends should be sealed with adhesive to prevent moisture from seeping in along the copper foil.
Marking and Traceability
Each Laminated Connector for Electrical Equipment should be laser-engraved with the order number, batch number, and length/direction markings (e.g., "L=200mm, bent towards X") to prevent incorrect assembly on-site.
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If you are developing new energy vehicle battery systems, energy storage projects, or high-current power equipment, our engineering team can provide a one-stop Copper Inverter Laminated Busbar solution, from drawing optimization to mass production, based on your current requirements, installation space, and structural design.
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