Materials & Construction:
Material: Usually made of copper foil with a thickness of 0.05 to 0.3mm, generally using high-purity copper, such as T2 or T2M oxygen-free copper strip, which has good electrical conductivity.
Structure: The multi-layer copper foil is arranged and combined according to the design requirements to form an overall conductive structure. There are various connection methods, including pressure welding and butt welding. Pressure welding is to split and melt the copper foil through the high-current and high-temperature heating of the polymer diffusion welding machine, and then the pressure welding is formed; Butt welding is the use of silver-based brazing solder and flat copper block for welding.
Performance characteristics:
Excellent electrical conductivity: Copper has good electrical conductivity, and the copper foil soft connection adopts a multi-layer copper foil structure, which increases the conductive area, can efficiently transmit large currents, reduce the resistance value, and reduce the loss of electrical energy in the transmission process.
Good flexibility: Compared with the traditional rigid conductive connection, the copper foil soft connection has excellent flexibility, can adapt to a variety of complex installation environments and equipment layouts, and can be bent, folded or twisted to a certain extent, which is convenient for installation and wiring, and reduces damage during installation.
Strong fatigue resistance: During the operation of the equipment, it may be subjected to external forces such as vibration and impact, and the copper foil soft connection can withstand repeated stress changes and is not easy to break, and has a long service life.
Good heat dissipation performance: The structure of multi-layer copper foil is conducive to heat dissipation, which can transfer the heat generated in the conduction process in time to avoid local overheating, so as to protect the safe operation of the equipment.
Corrosion resistance: After a special surface treatment process, the copper foil soft connection has good corrosion resistance and can work stably for a long time under harsh environmental conditions.
Applications:
Electric power industry: widely used in generators, transformers, switches, busbars, electrolysis, smelting and other high-current electrical equipment, used for conductive connections between equipment and expansion joints between busbars, which can effectively absorb the vibration and noise generated during the operation of the equipment, and avoid operation accidents caused by earthquakes and displacements in the surrounding environment.
New energy field: In the fields of new energy vehicles, solar power generation, wind power generation, etc., copper foil soft connection is used for the connection between battery packs, inverters and transformers, etc., which can adapt to the requirements of new energy equipment for high current, high voltage and flexible connection8.
Electronics industry: In the interconnection between electronic components such as semiconductor devices, circuit boards, and display screens, copper foil soft connections can achieve high-precision conductive connections to meet the development needs of miniaturization and integration of electronic devices.
Rail transit: used in the electrical system of rail transit vehicles, such as the traction converter of the train, the auxiliary power supply system, etc., can withstand the vibration and impact during the operation of the vehicle and ensure the reliability of the electrical connection.
