PVC Heat Shrinkable Sleeves For Busbar
PVC heat shrinkable sleeves for busbar is the core power transmission carrier that integrates conductivity, insulation, and protection in the new energy power system. It uses high-purity copper as the conductive substrate and achieves full insulation protection through PVC heat shrink tubing. It is designed specifically for power systems with high voltage, high density, and high reliability requirements. It is a key backbone component that connects power generation, energy storage, and power supply links.
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Product Introduction
PVC heat shrinkable sleeves for busbars are the core connectors in new energy power systems. It is not only a physical channel for current transmission, but also plays multiple roles in structural support, insulation protection, heat dissipation management, and system integration. This product is designed specifically for high voltage and high current scenarios such as new energy vehicles, photovoltaic energy storage, power distribution, rail transit, cloud server UPS, etc. It solves the engineering pain points of traditional cable wiring disorder, high contact resistance, poor heat dissipation, and fast insulation aging.
Main functions
Insulation method
PE heat shrink tubing, with a shrinkage rate of 30% -50%, can tightly adhere to the surface of copper bars after heating to form a dense insulation layer; The standard color scheme for PVC heat shrinkable sleeves for busbars (orange, green, etc.) helps engineers quickly identify phase sequence and improve production line efficiency through intuitive color coding.
01
Substrate standards
Heat shrink tube polyolefin busbar strictly follows high-purity copper (≥ 99.99%) standards from multiple countries such as GB/T2Y2 and DIN E-Cu58, ensuring conductivity ≥ 97% IACS and minimizing energy loss during high voltage and high current transmission; The balance between its hardness (80-110HV) and tensile strength (245-345MPa) maintains structural stability.
02
Surface treatment
Tin plating effectively prevents copper bar oxidation and maintains long-term conductivity stability; Nickel plating, with its high temperature resistance and salt spray resistance, is particularly suitable for harsh environments such as new energy vehicle battery packs and photovoltaic combiner boxes, significantly extending the service life of components.
03
Flame retardant grade
The passing of UL94-V0 flame retardant rating means that in the event of a short circuit in the electrical system, the insulation layer of the Heat shrink tubing busbar will not support combustion, meeting the safety regulations of mainstream markets worldwide (such as Europe and North America) for new energy vehicles and photovoltaic equipment, providing reliable safety protection.
04
Application scenarios
Inter module connection of power battery pack for new energy vehicles (EV)
PVC insulation busbar is the main circuit connection between adjacent modules inside the battery pack and between modules and BDU. Adopting Z-shaped bent copper busbar, tin plated at the end and fully immersed in orange PVC insulation layer, PEM nut is integrated into the hole for direct locking.
Between photovoltaic inverters and energy storage battery clusters
Busbar sleeves insulation is applied in series between the DC input terminal of the inverter and the output terminal of the battery cluster, as well as between the inner layers of the cluster. Cu ETP copper material is used, with silver plated ends and epoxy powder coating in the middle section. Both ends are punched and bolted for on-site installation.
Internal lead terminals of thin film capacitors
EV battery connector are applied between capacitor core packages and external wiring terminals, as well as in parallel current collectors for multi-core packages. T2 copper thin plate stamping is used for forming, and after silver plating, the whole is covered with PET insulation paper, and only the end is exposed during hot pressing sealing.
Core Production Process
High precision stamping: Using imported stamping equipment with an accuracy of ± 0.05mm, ensuring accurate size of the busbar, smooth edges of the connecting holes without burrs, and avoiding stress concentration causing Busbar insulation sheet breakage.
Precision welding: For multi-layer copper foil soft connections and other structures, high-end welding technology is used to ensure firm welding, low resistance, no virtual welding or solder leakage, and ensure conductivity.
Surface treatment: Adopting a fully automatic electroplating production line, the coating is uniform, the thickness is precise and controllable, ensuring stable surface treatment quality of Heat shrink busbar.
Insulation coating:For PVC heat shrink tubing and other processes, constant temperature heating equipment is used to ensure uniform shrinkage of the heat shrink tubing, tightly adhering to the Customized busbar insulting tube, without bubbles or wrinkles.
Finished product testing: Each PVC heat shrinkable sleeves for busbar undergoes electrical performance testing (withstand voltage, resistance), mechanical performance testing (tensile strength, hardness), and environmental adaptability testing (high and low temperature, salt spray) to ensure compliance with standards before leaving the factory.
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