On February 4, Lei Jun, Founder, Chairman, and CEO of Xiaomi Corporation, published a post detailing the company's Vehicle Body and Closure Durability Laboratory.
Lei Jun stated that the four-door, two-hood durability test rig utilizes multi-axis robotic arms to simulate high-frequency user actions of opening and closing doors and hoods. The testing concurrently incorporates simulations of extreme temperatures, humidity, and dust environments to comprehensively validate the fatigue life of the door and hood systems. This is a critical step in ensuring that Xiaomi's automotive door and hood systems maintain operational smoothness, sealing integrity, and safety redundancy over long-term use.
The component durability and strength test bench focuses on two key assessments: Component durability testing: Primarily examines whether components are "durable," ensuring the functional and structural integrity of various parts after extended user cycles; Component strength testing: Evaluates whether the strength at critical points of components remains safe and reliable under extreme operating conditions.
The local stiffness test bench primarily conducts tests involving localized pressing, stepping, and other scenarios on both interior and exterior vehicle body trims. This includes core components such as doors, hoods, instrument panels, and armrests, to verify if the stiffness of these parts meets user requirements.
He mentioned that the body torsional stiffness test bench is used to evaluate the entire body's resistance to twisting under dynamic loads. The testing process, akin to "wringing a towel," induces torsional deformation in the body to verify its anti-torsion characteristics under special conditions. Excellent body torsional stiffness can effectively enhance the vehicle's handling, NVH quietness, and sealing performance.
"Our SU7 achieves a torsional stiffness of 51,000 N·m/deg, while the YU7 reaches 47,610 N·m/deg, which is exceptionally high performance."
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