Used in Li Battery Cell Cases, from Mobile Electronics to Automobiles
Compared with the general-purpose materials 3003, our aluminum sheet for battery cell cases, FUSFORM-EN series, offers better anti-blistering characteristics and excellent formability. Their material strength is not diminished due to stress or heat load when cells are charged or discharged. They can also be welded, a point of concern with high-strength materials.
- Optimization for production conditions such as alloy composition, heat treatment, rolling ratios, etc., improves formability for deep drawing.
- Anti-blistering characteristics have been improved to prevent blisters from forming and causing battery degradation when cells are charged and discharged.
- Material composition is optimized for improved joinability during laser welding of lids and cases.
EN Series characteristics compared with general-purpose materials
|Limiting drawing ratio
|Very good||Good||Good||Good||Good||Very good|
|Anti-blistering characteristics||Good||Good||Good||Very good||Very good||Poor|
Anti-blistering characteristics evaluation testing results
|Original plate thickness||0.6 mm|
|Three-point bending creep test||Processed materials with 50% reduction in plate thickness
Loading stress: 250 N/mm2
Tested at 85°C for 24 hours
|Creep formation ratio||(Warping after stress release/warping due to stress loading) x 100|
|Tensile strength after forming process||Tensile strength after plate thickness reduction processing (cold rolling)|