燃料电池金属双极板精密冲压成型缺陷研究
|
摘要
金属双极板是质子交换膜燃料电池(PEMFC)的关键部件。精密冲压成型具有高生产效率、低成本、较好成型精度等优点,是金属双极板的主要制造技术。建立了金属板冲压有限元仿真计算模型,模拟了冲压成型后双极板表面变形、流道深度不一致等缺陷。在压力机上冲压制造了流道宽度1.1 mm、深度0.3 mm的金属双极板样件,并采用超景深显微镜和轮廓仪测量了双极板表面微流道形貌。测量结果表明冲压成型的双极板表面出现明显的凸出变形,且横截面流道深度不均匀,测得流道深度差值最大为0.04 mm。
Metal bipolar plate is a key component of the proton exchange membrane fuel cell(PEMFC). Precision stamping with high production efficiency, low cost, high accuracy, etc., is the main manufacturing technology of metal bipolar plate. The finite element model of metal plate stamping was established, and the deformation of the bipolar plate and the inconsistency of channels were simulated. The metal bipolar plate sample with channels of 1.1 mm width and 0.3 mm depth was stamped on the press machine. The micro channel morphology of the bipolar plate was measured by the super depth microscope and the profiler. The measurement result shows that the surface of the bipolar plate is obviously convex and deformed, and the depths of the channels are not uniform, and the maximum difference of the depths is 0.04 mm.
Metal bipolar plate is a key component of the proton exchange membrane fuel cell(PEMFC). Precision stamping with high production efficiency, low cost, high accuracy, etc., is the main manufacturing technology of metal bipolar plate. The finite element model of metal plate stamping was established, and the deformation of the bipolar plate and the inconsistency of channels were simulated. The metal bipolar plate sample with channels of 1.1 mm width and 0.3 mm depth was stamped on the press machine. The micro channel morphology of the bipolar plate was measured by the super depth microscope and the profiler. The measurement result shows that the surface of the bipolar plate is obviously convex and deformed, and the depths of the channels are not uniform, and the maximum difference of the depths is 0.04 mm.
引文
[1]冯彪,郑永平. PEMFC双极板材料及其制备工艺的发展现状[J].电源技术,2009,33(11):1033-1036.
[2]付甜甜.电动汽车用氢燃料电池发展综述[J].电源技术,2017,41(4):651-653.
[3]侯明,衣宝廉.燃料电池的关键技术[J].科技导报,2016,34(6):52-61.
[4] WON T P, CHUL K J, CHUNG G K. Improving channel depth of stainless steel bipolar plate in fuel cell using process parameters of stamping[J]. The International Journal of Advanced Manufacturing Technology, 2016, 87:1677-1684.
[5] JIN C K, KANG C G. Fabrication process analysis and experimental verification for aluminum bipolar plates in fuel cells by vacuumdie-casting[J]. Journal of Power Sources, 2011, 196:8241-8249.
[6] HUNGA J C, CHANGB D H. The fabrication of high-aspect-ratio micro-flow channels on metallic bipolar plates using die-sinking micro-electrical discharge machining[J]. Journal of Power Sources,2012, 198(7):158-163.
[7]许桢英,张园园,王匀,等.微型燃料电池双极板成形工艺的研究进展[J].电源技术,2015,39(4):861-863.
[8] PENG L F, QIU D K, YI P Y, et al. An analytical model for contact pressure prediction considering dimensional error of stamped bipolar plate and gas diffusion layer in proton exchange membrane fuel cell stack assembly[J]. Journal of Electrochemical Energy Conversion and Storage, 2016, 13(2):021007.
[9] TAYMAZ I, BENLI M. Numerical study of assembly pressure effect on the performance of proton exchange membrane fuel cell[J].Energy, 2010, 35(5):2134-3140.
[10] BAZYLAK A, SINTON D, LIU Z S, et al. Effect of compression on liquid water transport and microstructure of PEMFC gas diffusion layers[J]. Journal of Power Sources, 2007, 163(2):784-792.
[2]付甜甜.电动汽车用氢燃料电池发展综述[J].电源技术,2017,41(4):651-653.
[3]侯明,衣宝廉.燃料电池的关键技术[J].科技导报,2016,34(6):52-61.
[4] WON T P, CHUL K J, CHUNG G K. Improving channel depth of stainless steel bipolar plate in fuel cell using process parameters of stamping[J]. The International Journal of Advanced Manufacturing Technology, 2016, 87:1677-1684.
[5] JIN C K, KANG C G. Fabrication process analysis and experimental verification for aluminum bipolar plates in fuel cells by vacuumdie-casting[J]. Journal of Power Sources, 2011, 196:8241-8249.
[6] HUNGA J C, CHANGB D H. The fabrication of high-aspect-ratio micro-flow channels on metallic bipolar plates using die-sinking micro-electrical discharge machining[J]. Journal of Power Sources,2012, 198(7):158-163.
[7]许桢英,张园园,王匀,等.微型燃料电池双极板成形工艺的研究进展[J].电源技术,2015,39(4):861-863.
[8] PENG L F, QIU D K, YI P Y, et al. An analytical model for contact pressure prediction considering dimensional error of stamped bipolar plate and gas diffusion layer in proton exchange membrane fuel cell stack assembly[J]. Journal of Electrochemical Energy Conversion and Storage, 2016, 13(2):021007.
[9] TAYMAZ I, BENLI M. Numerical study of assembly pressure effect on the performance of proton exchange membrane fuel cell[J].Energy, 2010, 35(5):2134-3140.
[10] BAZYLAK A, SINTON D, LIU Z S, et al. Effect of compression on liquid water transport and microstructure of PEMFC gas diffusion layers[J]. Journal of Power Sources, 2007, 163(2):784-792.