2025.10.15 本文字数：2338，阅读时长大约4分钟 作者 |第一财经 梁昕、洪飞红 一扇打不开的车门，不仅困住了一条鲜活的生命，也为汽车门把手设计再次敲响了安全的警钟。 10月13日凌晨，一辆小米SU7在成都天府大道上发生碰撞后起火燃烧，4名路人救援者全力施救，但他 们"拳打脚踢"也未能打开车门。最终，这辆烧毁严重的小米SU7的驾驶舱车门，是由消防部门用切割机 才得以打开。 而这起事故，距离"3·29铜陵小米SU7爆燃事故"刚刚过去198天；距离汽车门把手新国标征求意见稿发布 也仅过去约20天。 而对于小米汽车反复强调的车内应急机械拉手问题，一位从业者表示，本次事故的被困人员在遭受猛烈 撞击后，极有可能处于意识不清的状态，这就导致他难以在1~2分钟内，找到车内较难触碰到的应急机 械拉手进行自救。"但在碰撞事故发生后约5分钟的时间里，车辆往往已经出现爆燃的情况了。"他说。 "小米SU7未配备机械式外拉手，外部救援人员很难打开车门。"一位车企研发人员告诉第一财经。 按照行业惯例，隐藏式门把手的设计需要确保在断电的情况下，能够通过机械式拉手开门，因此，绝大 多数车型都会针对隐藏式门把手设计双重安全冗余。比 ...

Core Viewpoint - The article highlights safety concerns regarding the design of the Xiaomi SU7's door handles, particularly the absence of mechanical external handles, which complicates emergency access during accidents [3][4][6]. Group 1: Incident Overview - On October 13, a Xiaomi SU7 caught fire after a collision in Chengdu, and rescuers struggled to open the doors, ultimately requiring firefighters to use a cutting tool [3]. - This incident occurred 198 days after a previous fire incident involving the same model, raising alarms about the vehicle's safety features [3]. Group 2: Design Flaws - The Xiaomi SU7 lacks a mechanical external handle, relying solely on an internal micro-switch for electronic unlocking, which poses risks in emergencies [4][6]. - The internal emergency handle, while present, may be difficult for unconscious occupants to locate and use quickly, especially in a rapidly deteriorating situation [6][11]. Group 3: Industry Standards and Reactions - Industry experts criticize the design choice of the Xiaomi SU7, noting that most vehicles with hidden handles include safety redundancies to ensure accessibility during power failures [6][10]. - New regulations are being proposed to mandate mechanical handles for vehicle doors to enhance safety, reflecting a shift in industry standards [10][11]. Group 4: Cost Implications - Transitioning from hidden handles to traditional mechanical designs involves significant costs, including redesigning electrical systems and molds, which may deter manufacturers from making changes [13][14]. - The potential need for recalls to upgrade existing vehicles with hidden handles is complicated by the large number of such models on the market and the associated costs [14].

Core Viewpoint - The incident involving the Xiaomi SU7 highlights significant safety concerns regarding the design of car door handles, particularly the lack of mechanical redundancy in emergency situations [2][3][5]. Design Issues - The Xiaomi SU7 features a hidden door handle design without a mechanical external handle, making it difficult for external rescuers to open the door in emergencies [3][4]. - The internal emergency handle, while present, may not be accessible to occupants who have lost consciousness after a severe impact, limiting its effectiveness [3][5]. Industry Standards and Responses - The automotive industry typically incorporates mechanical redundancy in hidden door handle designs to ensure safety during power failures, as seen in models like the Volkswagen ID.4 and GAC's models [4]. - Recent regulatory proposals emphasize the need for mechanical door handles to ensure safety in case of electrical failures or accidents, mandating that each door must have a mechanical release option [7][8]. Cost Implications - Transitioning from hidden door handles to traditional mechanical designs involves significant costs, including redesigning electrical systems and molds, which may deter manufacturers from making changes [8][9]. - The automotive industry is currently evaluating how to balance safety requirements with design aesthetics and cost considerations, as many manufacturers have invested in hidden handle designs [8][9].