The lithium battery pack internal connection SB cable is a special high-precision, high-safety connecting wire customized for the internal series-parallel connection of lithium battery packs, widely used in lithium iron phosphate batteries, ternary lithium batteries, polymer lithium battery packs for energy storage equipment, power tools, new energy vehicles, and portable power stations. As the core internal transmission component of the lithium battery pack, the SB cable undertakes the important tasks of current transmission, voltage balancing, and series-parallel assembly of single battery cells. Its electrical performance, safety, and stability directly determine the overall service life, discharge efficiency, and safety performance of the lithium battery pack, making it an indispensable basic component in lithium battery assembly and production.

The SB series connector matched with this cable is a professional miniature high-current connector for battery internal connection, featuring small size, large current carrying capacity, low resistance, and high safety. Compared with ordinary connectors, SB connectors are designed for battery low-voltage high-current working characteristics, with ultra-low contact resistance, which can effectively reduce heat generation during battery charging and discharging, avoid thermal runaway risks caused by line heating, and improve the safety of battery packs. The connector shell is made of high flame-retardant insulating material, which has excellent high-temperature resistance and flame retardancy. It will not burn or melt when the battery has abnormal high temperature, effectively preventing the spread of battery accidents. The internal terminal is made of high-precision copper alloy with gold-plated or silver-plated surface treatment, which has strong anti-oxidation and anti-corrosion ability, ensuring long-term stable contact and no virtual connection inside the closed battery pack, and avoiding battery capacity attenuation and discharge failure caused by poor contact.

In terms of cable body manufacturing, the internal connection SB cable adopts ultra-fine multi-strand oxygen-free copper stranded core technology. The single-strand copper wire is fine and uniform, and the stranded structure is compact, which not only ensures high conductivity and low impedance current transmission, but also makes the cable have excellent flexibility and bending resistance. The internal space of the lithium battery pack is narrow and compact, and the battery cells will have slight displacement and vibration during use and transportation. The flexible cable body can adapt to the tiny displacement of the battery cells, avoiding core breakage and circuit open circuit caused by rigid cable pulling. The cable insulating layer adopts high-temperature resistant PE or XLPE special insulating material, which has high insulation strength, good pressure resistance, and excellent thermal stability. It can work stably in the long-term temperature cycle environment of battery charging and discharging (-30℃ to 90℃), without insulation aging, breakdown, and leakage problems. At the same time, the insulating material has good compression resistance, which can avoid insulation damage caused by extrusion between battery cells.

This cable has extremely strict production standards and performance requirements because it is used inside the sealed lithium battery pack. All products are produced in dust-free workshops to ensure that the cable surface and internal core are free of dust, impurities, and oil stains, avoiding short circuit and poor insulation inside the battery pack caused by foreign matters. The welding and crimping parts of the cable and SB connector undergo full inspection of tensile force and conductivity to ensure that each connection point is firm and conductive stably, with zero failure rate in long-term use. The cable has stable voltage resistance performance, which can withstand the instantaneous voltage fluctuation during battery charging and discharging, and will not have breakdown and leakage. In terms of current transmission, different wire gauge specifications are customized according to the capacity and power of the battery pack, which can meet the low-current balancing connection of small-capacity battery packs and the high-current discharge connection of high-power energy storage battery packs.

The application scope of lithium battery pack internal connection SB cables covers almost all fields of lithium battery assembly. In the field of portable energy storage, they are used for internal series-parallel connection of small and medium-sized outdoor power stations, mobile energy storage batteries, and household backup battery packs; in the power tool industry, they are applied to internal circuit connection of lithium battery packs for electric drills, electric wrenches, lawn mowers, and gardening tools; in the new energy vehicle industry, they are used for auxiliary internal connection of low-voltage battery packs of electric vehicles, motorcycles, and electric bicycles; in the industrial energy storage field, they are applied to cell connection of industrial backup battery packs and solar energy storage battery packs. In addition, this cable is also suitable for the production and assembly of medical equipment batteries, intelligent equipment batteries, and robot power batteries.

In terms of use advantages, the standardized SB connector assembly mode simplifies the internal wiring process of lithium battery packs, improves the assembly efficiency of battery manufacturers, and reduces the defective rate of manual wiring. The high-precision and low-resistance performance of the cable effectively reduces the internal power consumption of the battery pack, improves the charge-discharge conversion efficiency of the battery, and extends the cycle service life of the lithium battery pack. Its excellent safety performance can effectively avoid common battery faults such as internal short circuit, heating, and virtual connection, reducing the safety hidden dangers of lithium battery products. As a professional internal connecting wire for lithium batteries, the SB cable has become a mainstream matching product in the lithium battery manufacturing industry due to its high safety, high stability, and high compatibility, providing reliable circuit guarantee for the safe and stable operation of various lithium battery products.