From：Internet Info Agency 2026-08-13 23:24:10
On August 13, Xiaomi Auto released its "Answers to Netizens' Questions" (Episode 276), introducing its proprietary "Xiaomi Longjia Battery" power battery system. Xiaomi led the product definition, battery pack design and development, participated in cell design and development, and implemented end-to-end quality control for the entire process. In terms of safety standards, multiple specifications of the Xiaomi Longjia Battery exceed national standards: - **Structural Safety**: The battery bottom can withstand an impact from a 25mm diameter striker with 500J of energy—surpassing the national standard requirement of a 30mm striker and 150J energy. Beyond meeting the basic requirements of no leakage, no fire, and no explosion after impact, the battery must also maintain full functionality. - **Thermal Safety**: Under extreme conditions of 55°C ambient temperature and fully charged state, even after triggering thermal runaway in a single cell, the battery pack shows no thermal propagation, fire, or explosion—conditions significantly stricter than the national standard’s requirement of 22±5°C ambient temperature and state of charge ≥95%. - **Electrical Safety**: The design incorporates greater electrical clearance redundancy than mandated by national standards and features a millisecond-level mechanical disconnect switch capable of physically cutting off high voltage within milliseconds. - **Data-Driven Safety**: The system supports 24/7 vehicle-cloud collaborative early warning and cloud-based AI inspections, with data sampling frequency ten times higher and total data volume three times greater than national standards. - **Cell Cycle Life**: The battery exceeds the national standard requirement of maintaining ≥80% capacity after 1,000 cycles. Regarding quality control, Xiaomi employs a “Shadow Factory” penetration management system, with each module deeply supervised by Xiaomi quality experts. Advanced inspection technologies are applied throughout the entire manufacturing process, with all production data archived for 15 years and full traceability ensured for every individual cell’s inspection records. For water-fording capability, all Xiaomi Pengcheng models come equipped with an emergency water-fording mode: the N90 Max achieves a maximum fording depth of 750mm, while the N70 Max reaches 650mm. The power battery meets IPX8 and IPX9K waterproof ratings, capable of withstanding submersion in 1 meter of water for 24 hours and high-pressure, high-temperature water jets at 80±5°C. During emergency water fording, drivers must proceed slowly at low speed, strictly limiting duration and distance, and must immediately contact a service center for inspection or repair afterward.
