Industry Application
Precision Steel Strip for High Power Battery Manufacturing
High power battery is one of the industries the Yongxin plant has served for years. Battery hardware combines deep forming, welding and long term corrosion exposure in one part, and all three are sensitive to how the strip was rolled and annealed.
Industry Pain Points
What Usually Goes Wrong in This Industry
Weld Behaviour Varies With Surface
Laser and resistance welding react to surface condition and residual oil, so an unstable surface shows up as weld rejects.
Deep Drawing Cracks at Thin Gauge
Cases and cans drawn from thin strip crack when elongation drops between deliveries.
Corrosion Over Service Life
Battery hardware sits in a demanding chemical environment for years, so grade selection cannot be left loose.
Thickness Directly Drives Pack Weight
Every micron of unnecessary thickness is weight that the pack carries for its whole life.
Customer Requirements
What Buyers in This Industry Ask For
- Consistent elongation for deep drawn cases and cans
- Clean weldable surface with controlled residual oil
- Corrosion resistant grades such as SUS304 and 316L
- Tight thickness tolerance to control pack weight and volume
- Traceable mill certificates for each coil
Recommended Products
Which Yongxin Family Fits
Ultra Thin Stainless Steel Foil/Coil0.05 - 1.0 mm thickness / 10 - 610 mm widthCold rolled SUS304, SUS301, 316L and SUS430 strip in soft and hard tempers for stamped springs, contacts, shields, medical parts and battery hardware.
Cold Rolled Steel Foil/Coil0.035 - 0.8 mm thickness / 50 - 520 mm widthDeep drawing quality SPCC, SPCD and SPCE strip down to 0.035 mm for stamped brackets, tube stock, enclosures and lamination blanks.Typical Application Scenarios
Where the Strip Ends Up
Battery Cases and Cans
Deep drawn from stainless or cold rolled strip where elongation and thickness uniformity decide draw success
Caps and Vent Components
Thin stainless parts that must weld cleanly and resist the cell chemistry
Connection Tabs and Busbar Hardware
Thin strip stamped where flatness and surface cleanliness affect joint quality
Structural and Bracket Parts
Cold rolled strip parts inside the module and pack structure
These are typical uses of precision cold rolled strip in this industry and are given to help you match a product family to your part. Send your drawing for a specific recommendation.
Solution Flow
From Enquiry to Delivered Coil
Requirement analysis on grade temper surface and tolerance
Material recommendation against your forming step and environment
Sample rolling and despatch for your approval
Bulk production on the mills with in process checks
Laboratory release on chemistry hardness tensile and surface
Packing marking and export documentation
Delivery Capability
What You Can Expect
Coils are supplied with mill test certificates against the standard you nominate. Packing, coil weight and inner diameter are set to your line, and samples are produced and approved before bulk rolling begins.
- 30,000 square metre plant in Wuxi with over 25,000 tonnes annual output
- Rolling annealing degreasing plating levelling slitting and testing on one site
- ISO 9001 and ISO 14001 certified management systems
- Standards GB DIN BS JIS and ASTM with matching mill test certificates
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Related Products Solutions and Articles
FAQ
High Power Battery FAQ
Which grades do battery customers usually specify
Can you hold a tighter thickness tolerance than the standard
Do you provide carbon footprint data for reporting
How do you handle deep drawing failures in trials
Get a Material Recommendation for This Industry
Send the part drawing, the forming operation and the volume. We will recommend the grade, temper and surface finish and produce a sample for approval.