News

Rigid copper busbars are integrally processed from solid T2 copper plates. Featuring high rigidity, they cannot be bent arbitrarily. They are manufactured through shearing, laser cutting, punching, CNC bending, deburring, electroplating and other processes. With compact structure, low DC resistance, excellent heat dissipation and high dimensional accuracy, rigid copper busbars maintain fixed shapes after installation and are suitable for static wiring inside cabinets. Under the same current‑carrying capacity, rigid copper busbars have lower material and processing costs, making them the mainstream choice for distribution cabinets and fixed busbars. Nevertheless, rigid copper busbars have almost no deformation allowance and cannot compensate for assembly errors. When equipment generates vibration or thermal expansion‑contraction during operation, stress will be directly transferred to bolts and terminals, which may cause stud deformation, loose connections and overheating failures in severe cases. Hence they are not fit for floating connection between two pieces of equipment.

Copper foil busbar features excellent electrical conductivity, flexible vibration‑damping performance and thermal displacement compensation capability. It is a core conductive component widely used in overseas new‑energy and power projects such as energy‑storage PCS, battery clusters, high‑low‑voltage switchgears, rectifiers, railway traction converters and high‑power charging piles. Due to diversified working conditions of overseas customers including varying ambient temperature, salt spray and vibration as well as different certification standards, proper selection directly determines long‑term equipment reliability. Based on rich experience in export projects, Xi’an Zipeng Technology sorts out key selection principles for copper foil busbar in high‑current scenarios.

As energy‑storage cabinets, high‑power UPS and industrial battery banks develop toward large‑capacity and high‑rate charge‑discharge operation, the conductive interconnection inside battery banks directly determines the temperature rise, safety and service life of the whole system. Conventional rigid copper bars are vulnerable to thermal expansion and contraction, cabinet vibration and assembly tolerance. Stress concentration tends to occur at bolted joints, resulting in increased contact resistance and local overheating. Thanks to deformation‑buffering capability, copper‑foil flexible connections have become the mainstream solution for high‑current loops of battery banks. Drawing on years of experience in flexible conductive components, Xi’an Zipeng Technology sorts out key selection criteria for high‑current flexible connections for battery banks to provide references for engineers.

Against the trend toward high‑power and highly‑integrated industrial equipment, high‑power rectifiers, electrolysis power supplies and industrial inverters impose strict requirements on internal conductive connections. Subject to vibration shock and thermal expansion & contraction caused by temperature cycling, conventional rigid copper bars suffer from concentrated assembly stress, loose bolts and excessive contact temperature rise in long‑term operation, which lead to equipment shutdown and frequent maintenance. Targeting a high‑power industrial power‑supply project for one equipment manufacturer, Xi’an Zipeng Technology delivered a customized copper‑foil flexible busbar solution to resolve connection challenges for high‑current circuits.

Vehicle‑mounted power supplies operate under harsh working conditions including 5‑200 Hz high‑frequency random vibration caused by road bumps, wide‑temperature shocks ranging from ‑40℃ to +85℃, and continuous high‑current load. Conventional rigid copper bars are prone to bolt loosening, fatigue cracking at joints, contact resistance drift and overheating failures. Targeting such pain points of vehicle‑mounted power supplies, Xi’an Zipeng Technology delivers a complete customized solution for copper foil busbar. Leveraging the excellent flexible buffering performance of copper foil busbar, this solution addresses reliability challenges of high‑voltage and high‑current transmission in vehicle‑mounted power systems.

The US DC fast‑charging (DCFC) market is expanding rapidly. Public charging stations and high‑power fleet charging sites face harsh operating conditions including sharp day‑night temperature swings, outdoor humidity and salt mist, continuous equipment vibration and long‑term full‑load high‑current operation. Conventional rigid copper bars and cables tend to suffer joint overheating, stress cracking and drifting contact resistance. With flexible buffering, low impedance and excellent current‑carrying capacity, copper foil flexible busbar has become the preferred conductive component between internal power modules, rectifier units and busbars of US charging piles.

In the three‑electric system of new‑energy vehicles, the battery pack and the electronic control unit serve as the core hub of vehicle power. The high‑voltage conductive link between them directly affects vehicle power performance, temperature rise control and high‑voltage safety. Subject to bumping and vibration during driving, thermal expansion and contraction from charge‑discharge cycles, and accumulated assembly tolerances, conventional rigid copper bars tend to generate mechanical stress, which may cause bolt loosening and joint overheating. With features of flexible buffering and high‑current conduction, copper foil flexible busbar has become a vital conductive connector between the battery pack and the electronic control unit.

With over ten years of R&D and manufacturing experience in flexible conductive components for high and low voltage power distribution, Xi’an Zipeng Technology has developed dedicated copper foil flexible jumpers for the connection between disconnecting switches and busbars in switchgear cabinets. Our products have become standard core accessories for complete power equipment manufacturers, effectively addressing common pain points of rigid busbars such as overheating, loose joints and cracking during long-term operation. They are fully compatible with complete high-low voltage cabinets, box-type transformers and ring main units of 10kV and below.

Copper foil flexible busbars have become indispensable core conductive components for energy storage, new energy vehicles, high-voltage switchgears and converters. Unlike rigid solid copper bars, laminated copper foil structures absorb vibration, compensate thermal expansion errors and lower circuit inductance, yet standard products rarely match unique project parameters. As a professional manufacturer of customized copper foil busbars, Xi’an Zipeng Technology sorts out standardized customization logic to help engineers achieve stable, cost-effective tailored solutions.

The core advantage of copper foil busbars lies in their unique multi-layer laminated flexible structure, which fundamentally solves the mechanical defects of rigid copper bars. Different from integral solid copper rows, Zipeng's copper foil busbars are stacked with high-purity T2 electrolytic copper foils and integrally formed by vacuum molecular diffusion welding. Each ultra-thin copper foil layer can independently buffer and absorb high-frequency vibration and mechanical impact generated during equipment operation, cabinet transportation and dynamic load switching. This flexible damping performance avoids concentrated mechanical stress and eliminates hidden troubles such as metal cracking and interface looseness caused by long-term vibration fatigue.