中青报·中青网记者 杨宝光 事实上，电解液的流动状况与锂离子的运动规律紧密关联。如果电池内部出现局部电解液干涸，就会导 致该区域的锂离子传输受阻，形成"堵车"。"锂离子无法正常迁移时，会在该处堆积并析出游离的金属 锂，这会引发电池热失控、起火甚至爆炸。"他说。 基于此，团队提出了将中子成像技术和集成光纤气体传感技术双模态融合，为电池检测安上"透视 眼"和"电子鼻"，从而看清电解液的运动规律和空间分布，并实时嗅探电解液分解产生的特征气体。 "课题组在光纤传感器领域开展了研究，发现将其植入电池后，能实时且误差较小地原位监测电解液副 反应产气等现象。然而，光纤技术虽能探测气体演变，却无法评估电解液的剩余含量及其在电池内部的 运动规律。"夏萌表示，在此基础上，团队引入了中子成像技术。凭借"中子具有强穿透能力，对氢元素 和锂元素极为敏感，而电解液的主要溶剂正是含氢化合物，因此中子成像能够实现对电解液运动规律的 高精度、高灵敏度监测。"夏萌补充说。 然而，技术融合的挑战在于"1+1可能小于2"。夏萌举例说，如果实验所用的电芯一致性不佳，两种方法 得出的数据误差会显著增大，难以实现有效关联。为解决这一问题，团队主动与企业沟 ...

Core Points - A fire incident involving a Li Auto MEGA occurred on October 23, 2025, while the vehicle was driving on a city road, resulting in a rapid fire outbreak after sparks were observed from the chassis [1][3][7] - All passengers and the driver were able to exit the vehicle safely, and Li Auto has stated that they are cooperating with the fire department's investigation [1][7][9] - The Li Auto MEGA was launched on March 1, 2024, with a starting price of 559,800 yuan, featuring a 102.7 kWh battery and a range of 710 km [11] Company Response - Li Auto confirmed that the vehicle had passed national quality inspections and emphasized the safety of their vehicles [7][9] - The company has arranged for personnel to handle the situation on-site and is actively cooperating with the fire department [7][9] - Li Auto highlighted the safety features of the "Kirin" battery, which is designed to manage extreme conditions and prevent thermal runaway [11]