Square Lithium Battery Aluminum Case Assembly
Square Lithium Battery Aluminum Case Assembly is a case assembly solution for lithium-ion batteries. This product includes the assembly of a square aluminum alloy case and a safety valve, designed to provide safe external protection and a proper pressure release mechanism for lithium batteries. Case assembly through the precise manufacturing process and strict quality control ensure the stable operation of lithium batteries in various applications.
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Product Introduction
Square Lithium Battery Aluminum Case Assembly is designed for prismatic lithium-ion battery cells used in electric vehicles, energy storage systems, and new energy applications. The battery aluminum case provides mechanical protection, lightweight structural support, and a sealed enclosure for internal battery components.
The product is manufactured through aluminum alloy deep drawing, precision stamping, laser welding sealing, and helium leak testing processes. Xiamen Apollo Stamping Welding Technology Co., Ltd supports OEM battery shell development with tooling design, process optimization, prototype verification, and mass production capability.
Manufacturing Process & Precision Engineering
Aluminum Alloy Deep Drawing
The automotive battery aluminum case is produced through multi-stage deep drawing and forming processes. Aluminum sheets are gradually shaped through controlled stamping operations to maintain wall thickness consistency and prevent deformation during battery assembly.
Precision Tooling Development
Dedicated forming dies are developed according to battery cell dimensions and customer drawings. Tooling accuracy is verified during trial production to maintain repeatable geometry for large-volume manufacturing.
Fiber Laser Welding Sealing
Laser welding technology joins aluminum case components with controlled heat input. The process minimizes thermal deformation and provides stable sealing performance for lithium-ion battery aluminum shell applications.
Helium Leak Testing
Each battery shell assembly can be verified through helium mass spectrometry testing to detect micro leakage points. The inspection process supports long-term sealing requirements in EV and ESS battery systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Square Lithium Battery Aluminum Case Assembly |
| Wall Thickness | Customized according to battery design |
| Tensile Strength | Customized based on alloy condition |
| Dimensional Tolerance | Controlled by tooling and CMM inspection |
| Surface Treatment | Anodizing / Passivation / Anti-Corrosion Treatment |
Technical Frequently Asked Questions
Q: What aluminum materials are used for Square Lithium Battery Aluminum Case Assembly production?
A: Square Lithium Battery Aluminum Case is mainly manufactured with 3003 and 3005 aluminum alloys, selected for low density, corrosion resistance, and forming capability. The material grade can be adjusted according to battery structure requirements, mechanical strength targets, and OEM specifications.
Q: How do you control dimensional accuracy during aluminum battery case forming?
A: Dimensional consistency is controlled through precision tooling development, multi-stage deep drawing, stamping parameter optimization, and CMM inspection. Critical dimensions are verified during mass production to ensure accurate matching with prismatic lithium battery cells and automated PACK assembly lines.
Q: What welding and sealing processes are used for battery aluminum casing?
A: The battery aluminum casing uses fiber laser welding technology to join case components with low heat input and controlled deformation. Helium leak testing is performed after welding to verify sealing performance and reduce risks from moisture or gas penetration.
Q: Can the lithium battery aluminum case be customized for different EV battery designs?
A: Yes. The Lithium -ion Electric Bike Battery Pack supports OEM customization based on cell dimensions, wall thickness requirements, terminal positions, and structural designs. Engineering support covers tooling development, prototype validation, and transition from samples to mass production.
Q: How do you ensure corrosion resistance and long-term durability of aluminum battery cases?
A: Surface protection solutions such as anodizing and passivation are available to improve aluminum corrosion resistance. Combined with controlled forming processes and sealing inspection, the battery shell maintains structural stability for EV battery packs and energy storage systems.
Contact Us
Submit your 2D/3D drawings, battery specifications, or project requirements for engineering evaluation. Our team provides DFM analysis, prototype support, and factory-direct quotation for custom lithium battery aluminum case solutions.
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