New energy vehicle steel coils: rigid support for battery packs

Material Innovation
Baosteel's GPA Steel®, engineered with ultra-high strength and toughness, can withstand a 150J impact from a 10kg iron pillar. Its impact resistance directly meets the stringent "no fire, no explosion" requirements of GB 38031-2025, providing the battery pack with a first line of physical defense.

Structural Optimization
Utilizing CTB technology to integrate the battery pack into the vehicle body structure, such as the "honeycomb aluminum-like" structure of BYD's Blade Battery, the battery pack becomes a rigid support unit, increasing the vehicle's torsional stiffness to 40,000+ N·m/° while reducing the risk of battery cell damage in a collision.

Safety Redundancy
The coordinated design of automotive steel coil materials and battery pack structures not only protects against external impacts such as flying rocks, but also prevents local deformation from causing a chain reaction through energy dispersion, achieving breakthroughs in both passive safety and vehicle body rigidity.