Aluminum Shell For Prismatic Lithium Ion Battery
Products Description
An aluminum shell for prismatic lithium ion battery is a metal structural casing used for packaging prismatic lithium-ion cells. It primarily houses the cell windings or stacked structures, providing stable mechanical support and a sealed environment for the battery's interior.
This type of product typically consists of:
an aluminum alloy casing, a top cover assembly, terminal post structures, a sealing system, and an explosion-proof design structure.
Compared to traditional steel casings, aluminum alloy battery casings are lighter, have better thermal conductivity, and are more adaptable to various manufacturing processes, making them widely used in the field of new energy vehicle power batteries.
Detailed Display
Bottom Microstructure
The recrystallized grain flow lines retained at the bottom after deep drawing exhibit a regular radial distribution after etching, proving symmetrical metal flow and the absence of internal inclusions or segregation.
Corner Section Metallography
The thickness ratio of the outer to inner wall of the corner is measured to be close to 1:0.88, superior to the industry-standard 1:0.75 level, indicating a significant draw bead compensation effect for Aluminum Battery Casing.
End Flanging Roundness
The roundness tolerance of the flange outer diameter is ≤0.05 mm, and the weld width consistency after laser welding is high, with a penetration depth fluctuation of <<10% for Lithium Battery Aluminum Case.
Surface Passivation Film Uniformity
Through polarization curve testing, the corrosion potential of the passivation film in 3.5% NaCl solution is stable, with no signs of pitting corrosion.
Wide Range of Applications
EV/PHEV/HEV Power Battery Systems
Providing Lithium-ion Battery Aluminum Shells that meet automotive-grade safety standards for pure electric and hybrid vehicles.
01
ESS Large-Scale Energy Storage Power Stations
Widely used in containerized energy storage and industrial and commercial energy storage systems, meeting long-term weather resistance and corrosion resistance requirements for over 10 years.
02
Residential Energy Storage and UP Power Supplies
Precision small-size square aluminum casings suitable for home green energy storage and data center backup power supplies.
03
Heavy Truck Battery Swapping and Light Electric Vehicles
Structurally reinforced for high-frequency vibration and complex mechanical impact conditions, ensuring extremely high reliability in Power Battery Shell assembly.
04
Technical Features: Integration and Interface Reconstruction
Electrical Post and Injection Port Pre-positioning Structure
Designed specifically for the customer's top cover welding process, the Lithium Iron Phosphate battery cells incorporate an electrical post positioning boss and guide groove, reducing the difficulty of alignment during cap assembly and improving laser welding focusing accuracy.
Insulation Film Integrated Coating Adaptation
The Lithium Ion Battery Pack's external dimensions and chamfer design fully consider the process characteristics of subsequent PET/blue film coating, preventing sharp edges from puncturing the insulation film and ensuring absolute safety in insulation withstand voltage between the cell and module.
Welding Interface Metallurgical Compatibility
Strict control of the proportion of impurities such as Fe and Si in the housing material optimizes keyhole stability during laser welding, preventing weld porosity and hot cracking, and ensuring extremely low leakage rates in weld airtightness.
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We not only provide standardized LiFePO4 Battery Pack products but also offer integrated engineering support, from material development and structural optimization to mass production, based on customers' cell structure, PACK design, and automated manufacturing needs. This support helps new energy projects achieve more stable and efficient mass production.
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