【摘要】 氢气浓度传感器是保障燃料电池汽车氢安全的核心部件。然而，国内与FCV氢气浓度传感器相关的测评体系和试验技术尚不完善。针对这一现状，提出了FCV氢气浓度传感器极端环境耐受性三项评价指标和测试方法。以A型和B型两款日本商业化催化燃烧型氢气浓度传感器为研究对象，在体积分数为3%的氢气标准气、气体流量1 000 mL/min工况下开展极端环境耐受性试验，验证了测评方案的可行性，并采集不同试验条件下的实时浓度数据分析传感器性能。结果表明，在振动和盐雾试验后，两款传感器检测值变化均在0.3%以内，传感器工作状态稳定；在气流冲击试验中，两款传感器工作性能得到优化，其检测值更接近标准气值，相对误差分别仅为0.34%和0.13%。研究为国产传感器开发及行业标准制定提供了理论与数据支撑。更多还原

【Abstract】 The hydrogen concentration sensor is a core component for ensuring hydrogen safety in fuel cell vehicles. However, the evaluation system and testing technology related to FCV hydrogen concentration sensors in China are not yet perfect. In response to this situation, this article proposes three evaluation indicators and testing methods for the extreme environmental tolerance of FCV hydrogen concentration sensors. Two Japanese commercial catalytic combustion hydrogen concentration sensors, Type A and Type B, were used as research objects to conduct extreme environmental tolerance tests under the conditions of 3% volume fraction hydrogen standard gas and 1 000 mL/min gas flow rate. The feasibility of the evaluation scheme was verified, and real-time concentration data under different test conditions were collected to analyze the sensor performance. The results showed that after vibration and salt spray tests, the changes in the detection values of both sensors were within 0.3%, indicating a stable working state of the sensors; In the airflow impact test, the performance of the two sensors was optimized, and their detection values were closer to the standard gas values, with relative errors of only 0.34% and 0.13%, respectively. The research provides theoretical and data support for the development of domestic sensors and the formulation of industry standards.更多还原