What is the specific function of the 1500MPa anti-scraping crossmember?

Question

The anti-scraping crossmember can push away road obstacles and, together with the frame beam and bulletproof coating, forms three lines of defense at the bottom of the battery pack.

Accepted Answer

The new-generation Xiaomi SU7 comes standard with a 1500MPa anti-scraping crossmember across the entire series, located in front of the power battery and lower to the ground than the battery pack. Simply put, its function is to "push away" obstacles such as stones ahead, reducing the risk of damage to the battery pack;
The top, sides, and bottom of the battery pack are all equipped with physical protection structures to reduce the risk of damage to the battery pack. The bottom protection mainly consists of three lines of defense:
The first line of defense is the 1500MPa anti-scraping crossmember equipped at the front of the chassis. It is positioned lower than the battery pack and can withstand the impact of road obstacles first during driving;
The second line of defense is the frame beam equipped at the front edge of the battery pack, which can effectively absorb energy if impacted during driving;
The third line of defense is the "bulletproof coating" equipped at the bottom of the battery pack, the same as on the Xiaomi SU7 Ultra. It is scratch-resistant and puncture-resistant, reducing the risk of damage to the battery pack when the vehicle's underbody encounters scraping.
In addition, the new-generation Xiaomi SU7 is equipped with a 2000MPa floor crossmember and a 1500MPa seat crossmember at the top of the battery pack, and features side frame beams and ultra-wide nine-grid sill beams on the sides to protect the battery in side-impact scenarios.

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