质子交换膜燃料电池薄金属双极板性能优化与设计

针对质子交换膜燃料电池制造技术实用化的瓶颈，研究了质子交换膜燃料电池低成本制造与性能优化问题，建立了质子交换膜燃料电池半个单池的三维计算模型，采用计算流体动力学技术对阳极燃料气体（H2）流场进行了数值模拟；以阳极最大燃料气体（H2）利用率为目标优化流场板沟槽尺寸，设计了一种操作成本低、容易批量生产的板料冲压成形薄金属双极板结构，可增大电池组体积比功率和提高燃料电池的性能；利用弹塑性有限元方法模拟阳极流场板冲压成形过程，验证了板料冲压成形金属双极板结构的可行性．

Performance Optimization and Design of PEMFC Thin Metallic Bipolar Plates

These days,the manufacturing techniques for proton exchange membrane fuel cells(PEMFC) have been bottleneck of its practical application.Research on the cost-effective manufacture and performance improvement of PEM fuel cells was presented in this paper.Firstly,a computational three-dimensional half-cell anode model of PEM fuel cell was proposed.With computational fluid dynamics(CFD) techniques,numerical simulation of flow field of fuel gas(H_2) at the anode of PEMFC was carried out to optimize the channel dimension of the flow field plate of PEMFC to reach maximum fuel gas(H_2) consumption.Secondly,economic structure design of the metallic thin sheet bipolar plate suitable to low cost mass stamping forming was developed,with reduction in thickness of bipolar plates and performance improvement of the fuel cells.Finally,the stamping of the metallic bipolar plates was identified feasible and acceptable via elastic-plastic finite element analysis simulation of the stamping forming of the anode flow field plate.