Aluminum Case For Primary Lithium Iron Battery LiFeS2
Products Description
This series of Aluminum Case for Primary Lithium Iron Battery LiFeS2 uses a square structure as its core design language, abandoning the limitations of traditional cylinders to maximize the use of internal space while ensuring uniform distribution of mechanical stress between the battery cell and the casing. Its core characteristics stem from a deep understanding of the operating characteristics of LiFeS2 batteries:
Balance of Lightweight and High Strength: Aluminum alloy has only 1/3 the density of steel, yet through heat treatment (H14 state), it achieves a tensile strength ≥150MPa, ensuring the casing is free from deformation under vibration and impact.
Non-magnetic and High Thermal Conductivity: The 3003-H14 grade contains manganese (Mn 0.4-0.8%), effectively suppressing magnetic field interference. Simultaneously, the high electrical conductivity of AL1060 (thermal conductivity ≈237 W/m·K) accelerates battery thermal management, preventing localized overheating.
Environmental Adaptability: Within a wide temperature range of -40℃ to 85℃, the material maintains stable physical properties, eliminating micro-cracks or seal failures caused by temperature differences.
Materials Science: Alloy Matrix for Different Applications
We are not just metal processors, but also materials application experts. We offer differentiated grade options to meet our customers' varying needs for energy density, corrosion resistance, and structural strength:
1. 3003-H14 Aluminum-Manganese Alloy (Mainstream Choice)
This is currently the "golden balance" material with the largest B2B procurement volume.
Excellent Machinability: The addition of manganese gives Prismatic Cell Case excellent deep drawing performance, ensuring uniform wall thickness and no cracks after multiple stretching of the square shell.
Corrosion Resistance: In harsh industrial environments, its resistance to atmospheric corrosion far exceeds that of ordinary carbon steel.
Thermal Conductivity: Effectively dissipates Joule heat generated during battery charging and discharging, extending cell life.
2. 1060 Pure Aluminum (High Conductivity Solution)
Ultra-high purity: Aluminum content ≥99.6%, with excellent electrical and thermal conductivity.
Welding Consistency: When using laser sealing welding, the weld seam of 1060 material exhibits extremely high smoothness, effectively reducing the risk of leakage.
3. 5052 & 6061 (High-Strength Structural Solutions) Impact Resistance: For automotive or power tool applications, the 5052 alloy offers higher yield strength, preventing physical damage to the battery in the event of drops or impacts.
Structural Design and Functional Advantages: Engineering Wisdom at the Microscopic Level
Ultimate Space Utilization and Energy Density
The square aluminum casing maximizes the use of the battery pack's internal space, eliminating the "dead zones" inherent in cylindrical batteries. For space-constrained IoT devices and military portable terminals, this means that more active material can be packed into the battery within the same volume, directly improving the overall energy efficiency ratio.
Explosion-Proof and Pressure Management Design
LiFeS2 batteries may generate internal pressure under extreme abuse conditions. We have incorporated fluid dynamics simulation optimization into the R-corner design of the bottom and sidewalls of the Battery Aluminum Housing to ensure uniform stress distribution. For specific needs, we can customize microstructural explosion-proof textures or weak point designs (as an extension of the safety valve function), ensuring airtightness during daily use while mitigating potential safety risks through structural deformation.
Exceptional Airtightness Guarantee
The long lifespan of primary batteries requires the casing to have "zero leakage" capability. Our lithium cell Aluminum shell undergoes a special passivation treatment, combined with high-precision mouth machining technology, enabling a perfect laser welding or mechanical sealing fit with the sealing cover. This ensures that the electrolyte does not evaporate or leak during a storage period of more than 10 years.
Application Advantages: Empowering Your End Products
Reduced Weight
Compared to steel casings, lithium cell battery Aluminum shells reduce weight by approximately 30%-40%, which is crucial for handheld devices and aerospace applications.
Electromagnetic Shielding (EMI)
prismatic cell Aluminum shells naturally possess excellent electromagnetic shielding properties, effectively protecting the battery's internal protection circuitry (PCM/BMS) from external high-frequency interference.
Environmental Adaptability
LiFeS2 batteries are commonly used in extremely cold environments down to -40°C. Our aluminum alloy does not exhibit cold brittleness at low temperatures, ensuring a consistently tight seal.
contact us
If you are developing or optimizing a primary lithium iron phosphate battery structure project, our engineering team can provide targeted Aluminum shell for lithium ion battery cell design suggestions and sample support based on your cell size and packaging process. You are welcome to submit drawings or technical parameters to the inquiry page for technical consultation.
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