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Auxiliary power supplies operate under harsh working conditions: continuous vibration from cooling fans, repeated thermal cycling of power devices, compact cabinet space and high-frequency switching. In this scenario, copper foil flexible busbars (laminated copper foil flexible connections) and traditional rigid copper busbars show obvious differences in mechanical performance, electrical characteristics, installation adaptability and long-term reliability.

Auxiliary power supplies serve as core supporting units for power electronic equipment such as rail transit converters, energy storage converters, industrial frequency converters and UPS systems. They provide stable power for equipment control circuits, cooling systems, detection components and switching elements. The safety and stability of the whole equipment heavily rely on the reliability of auxiliary power supplies. Under complex working conditions including frequent start-stop, cyclic temperature changes inside cabinets and continuous vibration from cooling fans, traditional rigid copper bars are prone to thermal stress cracking, loose bolts and local overheating. Ordinary cables suffer from messy wiring, poor heat dissipation and high stray inductance, failing to meet the design requirements of high-end auxiliary power supplies. In response, Xi'an Zipeng Technology focuses on flexible conductive connections and offers customized copper foil flexible busbars to solve pain points in power connections of auxiliary power supplies.

As core equipment for heavy-duty welding processing, high-power welding machines are widely applied in scenarios such as steel structures, engineering machinery, pressure vessels and shipbuilding. During operation, these machines instantaneously output ultra-high currents while enduring continuous vibration and temperature fluctuations, imposing stringent requirements on the current-carrying capacity, fatigue resistance and reliability of internal conductive connectors. With excellent electrical conductivity and flexible buffering characteristics, copper foil flexible connectors have become indispensable high-current conductors for the rectifier units and transformer output ends of high-power welding machines. Focusing on customized copper foil flexible connectors, Xi'an Zipeng Technology provides adaptive flexible conductive solutions tailored to the high-temperature, strong-impact and frequent on-off working conditions of high-power welding machines.

With the intelligent upgrading of warehousing and logistics, lithium-ion electric forklifts are gradually replacing traditional lead-acid forklifts, bringing higher requirements for the safety, reliability and service life of power systems. As a core high-current conductive component inside battery PACKs, copper foil flexible connectors have become an indispensable key part of the power circuit of lithium forklifts. Focusing on the R&D and manufacturing of flexible conductive conductors, Xi'an Zipeng Technology provides customized copper foil flexible connector solutions tailored to the working conditions of electric forklifts, including frequent vibration, temperature fluctuation and compact cabin space.

When rigid copper busbars are adopted for rigid connection, vibration produced by reactors is directly transmitted to bolt joints of busbars. Under the combined influence of long‑term vibration and thermal expansion‑contraction during operation, fastening bolts tend to loosen. The contact resistance rises sharply at joints, resulting in abnormal temperature rise. In mild cases, excessive temperature increases and reduced overall efficiency occur. In severe cases, insulation aging and equipment shutdown may take place, causing heavy losses for continuous production in metallurgical and chemical industries. Besides, rigid copper busbars cannot compensate for assembly tolerances of cabinets, bringing high difficulty to assembly and commissioning as well as heavy workload for later‑stage on‑site operation and maintenance.

Complete pre‑processing is essential for copper foil flexible busbar to achieve high conductivity, good flexibility, vibration resistance and long service life. It represents a key technical standard distinguishing high‑end products from low‑end alternatives, widely applied in energy‑storage systems, new‑energy vehicles, charging piles, high‑voltage switchgears and industrial power supplies.

Manufactured by stacking multi‑layer high‑purity T2 copper foils with terminals integrated via polymer diffusion welding, copper‑foil flexible busbars allow displacement compensation through flexible middle sections. Available with tin‑plating and insulating sleeve encapsulation, they satisfy requirements for current‑carrying capacity, anti‑vibration fatigue and insulation protection for multiple new‑energy scenarios.

Made of high‑purity T2 copper, rigid copper busbars feature high conductivity. Compared with cables under the same current load, they offer larger heat‑dissipation surfaces and lower DC resistance. For heavy‑DC applications of several thousand amperes, temperature rise stays well‑controlled, cutting power loss. They support long‑term non‑stop operation of rectifier units and mitigate risks of overheating failure.

Against the backdrop of global industrial manufacturing upgrading, industrial power equipment such as electrolytic rectifier power supplies, electroplating power supplies, high‑power inverter units and induction‑heating power sources are evolving toward high‑current continuous load and compact cabinet‑integrated design. The selection of conductive busbars directly determines the operating efficiency, temperature‑rise performance and long‑term reliability of complete equipment. As a core conductive carrier inside industrial power supplies and rectifier devices, rigid copper busbars have been widely adopted by overseas equipment manufacturers.

Solid integrated structure ensures stable conductivity, low DC resistance and excellent heat dissipation, resulting in lower heat generation under high‑current working conditions.

High dimensional accuracy and neat appearance, suitable for cabinet layout with little deformation after installation.

Simple processing procedures. Lower material and processing costs for the same cross‑sectional area, ideal for mass production.