The Aluminum Shell For Lithium Ion Prismatic Cell：Material Innovation And Performance Upgrade Drive Industry Transformation

In the era of rapid development of the new energy vehicle industry, battery safety and efficiency have become the key to core competitiveness. As the "protective armor" of the battery pack, the Aluminum shell for lithium ion prismatic cell, with its material selection, performance design and manufacturing process, directly determines the safety level, driving range and comprehensive cost of the entire vehicle. From traditional metal materials to modern composite materials, the development of the Li on Cell Aluminum Shell is a vivid epitome of technological iteration in the new energy industry. Its continuously upgraded characteristics and performance requirements are laying a solid foundation for the popularization of electric vehicles.

The samsung prismatic cells Aluminum shell is a core structural component of electric vehicles, mainly used to house high-voltage batteries, electronic components, sensors and connectors, serving as a key interface between the drive system and the vehicle body structure. The size of the prismatic lfp cells Aluminum shell in pure electric vehicles is generally large, with conventional products having a length of about two meters and a width of about 1.4 meters. Achieving high-standard waterproof and airtight performance for such a large structure poses severe challenges to design and manufacturing processes. At present, domestic enterprises ensure the safe and stable operation of battery packs in complex environments such as wading through innovative leak-proof technologies and strict airtightness testing before leaving the factory.

Meanwhile, the cell lithium battery Aluminum shell undertakes multiple protective missions: it must have sufficient structural stability to protect the battery module from damage in collision accidents; cooperate with the built-in cooling system to suppress battery overheating, ensuring that lithium-ion batteries work within the ideal temperature range of 10-40°C; and resist environmental influences such as wind, rain and corrosion to ensure long-term effective operation of the battery. In addition, due to the high charging frequency, high current intensity of electric vehicles, the lithium prismatic battery Aluminum shell must also have excellent insulation, high temperature resistance, aging resistance, as well as halogen-free flame retardancy and low smoke density when burning.

(1) Mechanical Performance: Core Guarantee for Structural Safety
The stiffness of the lithium dry cell battery Aluminum shell directly affects the overall rigidity of the white body and must meet safety standards such as frontal collision and side collision. In the current mainstream sandwich structure design, aluminum foam is often used as the core material, combined with the advantages of high specific stiffness and low weight of fiber-reinforced components. This not only improves structural stability but also optimizes the noise, vibration (NVH) performance of the vehicle. This design enables the Aluminum shell for lithium ion phosphate cell to perform better in resisting external impacts, building a solid protective barrier for the battery module.

(2) Thermal Management and Flame Retardancy: Dual Empowerment of Temperature Control and Safety
The Aluminum shell for lithium iron phosphate prismatic cells made of composite materials shows outstanding advantages. Among them, the thermal conductivity of carbon fiber-reinforced composite materials is only 1/200 of that of aluminum alloy, with better insulation, which can better resist high and low temperature environments. The excellent thermal insulation effect reduces the energy consumption of the thermal management system, helps improve vehicle range efficiency and reduce total power consumption. At the same time, the low thermal conductivity lays the foundation for flame retardant performance. By adding flame retardants, the lithium power cell Aluminum shell can easily meet international flame retardant standards such as UL94-V-0 and UL94-5VB, greatly reducing the risk of battery fire.

(3) Comprehensive Performance: Multi-dimensional Adaptation to Practical Needs
The lto lithium cells Aluminum shell needs to meet multiple requirements such as corrosion resistance and airtightness. The sandwich structure design significantly improves its corrosion resistance and sealing performance. By optimizing the fiber layup and fiber volume content, electromagnetic shielding in key areas can also be achieved, avoiding interference from the battery system on other electronic equipment of the vehicle. In addition, the application of composite materials provides more space for the integrated design of the Aluminum shell for lithium polymer battery cell. Reinforcement components, sensors, connecting parts, etc. can all be integrated, simplifying the structure while improving assembly efficiency.

Under the industry trend of "replacing steel with plastic", the material of the Li on Cell Aluminum Shell is accelerating towards thermoplastic reinforced plastics. Compared with traditional extruded steel and aluminum materials, thermoplastic plastics have obvious advantages in many aspects: they not only reduce vehicle weight and help improve driving range but also shorten production cycle time and reduce manufacturing costs. The technical demonstrator developed by Lanxess and Kautex Textron Group in cooperation uses Direct Long Fiber Thermoplastic (D-LFT) and Polyamide 6 (PA 6) resin to create a large-scale all-plastic samsung prismatic cells Aluminum shell with a size of 1400*1400 mm and a weight of only double-digit kilograms, fully verifying the outstanding advantages of thermoplastic plastics in weight, cost, function integration and electrical insulation.

In terms of manufacturing process, the single-stage D-LFT molding process has achieved a breakthrough. Components such as the shell tray, shell cover and underbody protection device of the prismatic lfp cells Aluminum shell can be produced integrally. Lanxess's optimized Durethan B24CMH2.0 polyamide 6 is used as the molding compound, mixed with Kautex's glass fiber roving, and then locally reinforced with Lanxess's Tepex dynalite fiber-reinforced thermoplastic composite material. This not only simplifies the production process but also greatly shortens the manufacturing cycle, which is more economical than the processing technology of steel and aluminum materials. In contrast, the traditional cell lithium battery Aluminum shell made of metal materials has high costs, heavy weight and complex assembly due to its large size, many components, and multiple processes such as welding, drilling, fixing and cathodic dip coating.

The material innovation and performance upgrade of the lithium prismatic battery Aluminum shell are important supports for the high-quality development of the new energy vehicle industry. From metal materials to thermoplastic reinforced composite materials, from multi-process processing to integrated molding, the lithium dry cell battery Aluminum shell is moving towards a safer, lighter, more economical and more integrated direction. With the continuous iteration of technology, the Aluminum shell for lithium ion prismatic cell will further break through performance boundaries in the future, inject stronger momentum into the safety and efficiency of electric vehicles, and promote the new energy industry to move forward steadily on the path of innovation.