【摘要】 安全性是质子交换膜燃料电池的重要指标,而燃料电池最大的安全问题是质子交换膜超压破裂造成火灾或爆炸。实验构建了5 kW氢空质子交换膜燃料电池发电系统,用故障树方法对电池堆系统发生膜破裂造成火灾或爆炸等事故进行了概率评价,质子交换膜超压破裂氢气体积分数达到4.1%发生氢气火灾或爆炸的频率是4.744×1-0 6次/a,评价结果表明这个风险是可以接受的,完全满足此实验系统安全性要求。此结果可以作为论证燃料电池系统安全性的依据之一。更多还原

【Abstract】 Security must be a key consideration in proton exchange membrane fuel cell designs.The main safety problem with fuel cells is fires or explosions caused by a membrane rupture.The probability of fires or explosions caused by membrane rupture in a 5 kW proton exchange membrane fuel cell was evaluated using the fault tree method.The probability is found to be 4.744×10^-6/a with a hydrogen volumetric fraction of 4.1%.The fault tree result shows that the risk is sufficiently low and the fuel cell system is safe.更多还原