Aluminum Li-ion Cells
In the game of safety and energy density of lithium-ion battery systems, the casing is not only a container for holding Aluminum Li-ion cells, but also the first line of defense for electrochemical stability and the physical cornerstone of thermal runaway management. We focus on providing high-precision, high-strength, lightweight aluminum alloy battery casing solutions for electric vehicles (EV), energy storage systems (ESS) and high-end consumer electronics.
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Product Introduction
This series of Aluminum Li-ion cells is defined as a highly formable deep-drawn aluminum battery case, specially designed for prismatic (Prismatic) and cylindrical (Cylindrical) lithium-ion batteries. It is not just a metal tank, but a precision structural part that integrates impact protection, electromagnetic shielding, heat dissipation and air-tight explosion-proof functions. In view of the high expansion characteristics of power batteries, our shells consider the internal pressure tolerance and dimensional stability after long-term cycling during the material selection stage to ensure that the structure does not undergo plastic deformation during the entire life cycle of the battery, thus ensuring the accuracy and safety of module stacking.
Material advantages
Strict control of impurity elements
By controlling the microscopic distribution of impurity elements such as Fe and Si, we effectively reduce the anisotropy of the material during the stamping process, avoid molding cracks, and improve the ductility of the shell for Aluminum Case for Powerwall Lithium battery Pack.
A balance between lightweight and strength
Compared with traditional steel shells, our aluminum alloy shells can achieve a weight reduction of 40%-50%, directly increasing the energy density (Wh/kg) of the battery system. Through a unique work hardening process and heat treatment method, we maintain a low density while giving the shell an extremely high yield strength.
Excellent corrosion resistance and oxidation resistance
The naturally formed dense oxide film on the surface, combined with a special chemical formation process, ensures the long-term corrosion resistance of the shell in electrolyte leakage or high-humidity environments, eliminating the risk of short circuits caused by shell corrosion for LiSoCl2 Battery Case.
Detailed display
Inner wall details
The inner wall is precision-polished, smooth as a mirror, without burrs, scratches, and impurities to avoid scratching the cell diaphragm and pole pieces, reducing the risk of short circuits; the inner wall insulating coating is evenly covered, with no leakage or bubbles, and the insulation performance is stable and reliable.
Welding details
The laser welding seam is smooth and dense, with no pores, no cracks, and no bulges. It is integrated with the shell. It is smooth and traceless after polishing. The welding strength is higher than the base material. There is no cracking or leakage risk in long-term use, and the sealing performance is stable for Lithium Ion Battery Pack.
Edge details
The edges are fully rounded, with even arcs, no sharp edges, no burrs, and a smooth touch; the edge sealing reinforcement structure is tight, and the sealing strips fit tightly without gaps or falling off, double guaranteeing the sealing performance for Polymer Lithium battery Case.
Surface details
Anodized + insulating coating has a uniform surface color, fine texture, scratch resistance, and is not easy to fall off; no scratches, no stains, no deformation, and exquisite appearance. The color can be customized according to customer needs to adapt to different product appearance design needs for LiFePO Battery Pack.
Manufacturing advantages
We have a complete aluminum shell deep drawing and stamping production line, a laser welding workstation and an online air-tightness testing system. All processes are controlled in a closed loop under the same quality system.
Multi-station transfer die stamping
Using a continuous die structure, blanking, stretching, shaping, flanging, punching and other processes can be completed in one positioning to avoid uneven wall thickness caused by secondary positioning.
Laser seam welding process
The shell and bottom cover are welded using pulse or continuous laser welding. The heat-affected zone is narrow and the penetration depth is adjustable to eliminate welding penetration and spatter for Aluminum Prismatic Casing.
Deburring and cleaning process
Each shell is cleaned by centrifugal grinding+ultrasonic degreasing, and the surface cleanliness reaches the standard of eliminating secondary treatment before battery assembly for Lithium Ion Battery Pack.
Full inspection air-tightness test
Using a differential pressure air tightness instrument, 100% online detection, the leakage rate is controlled below the upper limit of the project for Lithium-ion Battery Pack.
Application advantages
New energy vehicle power battery
It is suitable for power battery systems of new energy passenger cars and commercial vehicles. The lightweight design reduces the weight of the battery pack and improves the cruising range. The high thermal conductivity ensures fast charging and thermal safety. The strong sealing is suitable for vehicle vibration and impact conditions, helping the power battery system to achieve high energy density, high safety and long life.
Large energy storage system
It is suitable for large-scale energy storage scenarios such as power grid energy storage, industrial and commercial energy storage, and home energy storage. The long-life design matches the service life of the energy storage system for more than 15 years; the excellent corrosion resistance is suitable for outdoor humid and salt spray environments.
High-end consumer electronics and portable devices
It is suitable for notebook computers, drones, high-end digital equipment, portable energy storage power supplies, etc. The lightweight design improves product portability; the ultra-thin wall design meets the needs of thin and light products; the insulation safety ensures the stable operation of electronic equipment, taking into account both performance and appearance.
Industrial equipment and special power supplies
It is suitable for special power supply scenarios such as industrial control equipment, medical equipment, rail transit, aerospace, etc. The wide temperature adaptability meets extreme temperature working conditions; the high vibration and impact resistance is suitable for harsh industrial working conditions; the environmental protection compliance is suitable for global high-end market certification.
contact us
If you need to further evaluate the compatibility of our Aluminum Li-ion cells with your cell assembly line, welding process and thermal management system, please enter the inquiry page to describe your cell size and mass production stage. We will provide you with targeted engineering parameters and sample matching solutions.
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