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Soft-pack battery cell: light weight and flexible innovation

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Material properties

Soft-pack battery cells are encapsulated in aluminum-plastic film (with a thickness of 80-150μm), and are composed of a nylon layer, an aluminum foil layer and a polypropylene layer. Its weight is 40% lighter than that of steel shell battery cells, and its energy density can reach 300Wh/kg. However, its mechanical strength is only 5MPa, and it needs to be reinforced with a metal frame.

Technological breakthrough

Solid electrolyte compatibility: The soft-pack structure is more compatible with sulfide solid electrolytes, with the interface impedance reduced to 10Ω·cm² and the low-temperature performance at -40℃ improved by 30%.
Irregular customization: The bendable design is suitable for the irregular battery compartments of motorcycles. For instance, the Yadea G5 model adopts an arc-shaped soft-pack battery pack, which increases space utilization by 35%.

Application limitations

Expansion control challenge: The thickness changes by up to 8% during charging and discharging, and a prestressed fixture needs to be used to limit the deformation.
Packaging process bottleneck: The qualified rate of heat sealing with aluminum-plastic film is only 92%, and the risk of leakage is three times that of hard-shell battery cells.

START-STOP LITHIUM battery

Enov start-stop battery is designed to provide excellent performance for high-demand start-stop vaehicles. It adopts the third-generation intelligent lithium platform architecture to achieve technological breakthroughs in core indicators such as cycle life, environmental adaptability and energy density. Compared with the traditional lead-acid battery system, the energy efficiency is increased by 210%, the cycle life is extended by 8-10 times, and the monthly self-discharge rate is controlled within 3%. Enov's unique low-temperature battery technology makes a breakthrough in achieving stable output in the whole climate domain from -30℃ to 65℃, maintaining more than 90% of the effective capacity release under extremely cold conditions (-30℃), and maintaining 90% of the capacity in high temperature environments (65℃).
The start-stop battery series products cover the mainstream voltage platform of 12V/24V/48V, and support flexible configuration of LFP (lithium iron phosphate) and NCM (lithium nickel cobalt manganese oxide) dual-material system. All models adopt modular design to support customization of different model specifications. Enuo engineering and technical team to provide full cycle technical service support, if you need, please contact us.

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