小米汽车官方介绍了龙甲电池的核心技术特点。[1]这款由小米汽车主导的动力电池系统化解决方案，最大特点是安全标准远超现行国标，涵盖结构安全、热安全、电气安全、大数据安全和电芯循环寿命等多个维度。[1]
在结构安全方面，龙甲电池底部撞击测试采用25mm撞击头、500J能量，远超国标30mm撞击头和150J标准的要求。[1]热安全标准经过55℃高温、满电条件下的测试，单电芯触发热失控后电池包无热蔓延、不起火、不爆炸。[1]大数据安全标准的信息采集频率达到国标的10倍，数据量达到国标的3倍，而电芯循环寿命要求远超国标1000次循环后容量保持率≥80%的规定。[1]
此外，小米澎程全系车型配备应急涉水模式，动力电池满足IPX8及IPX9K防水标准。[1]其中N90 Max最高涉水深度可达750mm，N70 Max最高涉水深度为650mm，电池可承受1米水深24小时浸泡以及80±5℃高温高压水流冲洗。[1]
Xiaomi has disclosed technical specifications for its Long Jia battery, the company's integrated power battery system solution for its vehicles.[1] The battery's defining characteristic is safety performance that surpasses national standards across multiple dimensions.[1]
The Long Jia battery demonstrates enhanced structural safety through bottom impact testing using a 25mm striking head and 500J energy level, significantly exceeding China's national standard of a 30mm striking head and 150J energy requirement.[1] On the thermal safety front, the battery undergoes testing at 55°C in fully charged conditions; after a single cell experiences thermal runaway, the battery pack exhibits no thermal propagation, fire, or explosion.[1] Data security protocols operate at ten times the national standard collection frequency, with data volume three times that of the baseline requirement.[1] The battery cells maintain capacity retention above 80% after cycling well beyond the national standard threshold of 1,000 cycles.[1]
Xiaomi's Pengcheng vehicle lineup is equipped with emergency wading modes, with the N90 Max and N70 Max models capable of maximum water depths of 750mm and 650mm respectively.[1] The power batteries meet IPX8 and IPX9K waterproof standards, enabling them to withstand 24-hour immersion at one meter depth and high-pressure water spray at 80±5°C.[1]
