Abstract: Because fuel cell vehicle has the particularity of fuel system, it is different from traditional vehicle and pure electric vehicle, so there are many new problems in the research of crash safety. In this paper, the performance of a fuel cell vehicle under different crash safety standard conditions China insurance automotive safety index (C-IASI), 50 km/h side crash, China-new car assessment program (C-NCAP), 50 km/h side crash and C-NCAP, 32 km/h side pole impact is verified. By comparing the dummy damage value and the maximum deformation of the door, it is confirmed that the fuel cell vehicle will be tested more severely under the condition of side pole impact. Through simulations, the damage degree of different risk points under side pole impact conditions are compared and analyzed to determine the most critical risk position in the aspect of hydrogen leakage safety. The position is the valve of the front hydrogen tank. Based on the risk position, the crash test is carried out, the cause of gas leakage is confirmed, and the corresponding structure optimization is carried out, it provides a certain reference for the research of fuel cell vehicle crash safety.

Key words: fuel cell vehicle; crash safety; side pole crash; hydrogen leakage

摘要： 燃料电池汽车因其具备燃料系统的特殊性，区别于传统汽车和纯电动汽车，故其在碰 撞安全性研究方面也多了新的课题。文章针对某款燃料电池汽车，实车验证其在当前不同的 碰撞安全标准工况，即在中国保险汽车安全指数（C-IASI）50 km/h 侧面碰撞、中国新车评价 规程（C-NCAP）50 km/h 侧面碰撞和 32 km/h 侧面柱碰撞工况下的表现，通过假人伤害值和 车门的最大变形量对比，从而确认在侧面柱碰工况下对于该款燃料电池汽车考查更为严苛。 又通过仿真对比分析了该车在侧面柱碰工况下不同风险点的损伤程度，从而确定了在氢泄漏 安全方面最严苛的风险位置，即前氢阀的位置。基于该风险位置进行了碰撞试验，确认了其 气体泄漏的原因，并进行相应的结构优化，通过仿真分析和实车侧柱碰撞验证了优化方案的 可行性，为燃料电池汽车碰撞安全性研究提供了一定的参考。

关键词: 燃料电池电动汽车；碰撞安全性；侧柱碰撞；氢泄漏