Composite graphite bipolar plate and preparation method

The present invention provides a composite graphite bipolar plate. The composite graphite bipolar plate a porous metal plate having a plurality of through holes, runner ridges which are arranged on two opposite surfaces of the porous metal plate, and fixing columns which are arranged in the through holes corresponding to the runner ridges, wherein the fixing columns and the runner ridges are integrally formed in a compression molding mode. The composite graphite bipolar plate is advantaged in that effective combination is achieved by embedding graphite powder into the porous plate, toughness and strength of the graphite plate are improved through the metal framework, comprehensive performance of the bipolar plate is effectively improved, reduction of the thickness of the bipolar plate is facilitated, meanwhile, the forming process is simple, and batch production is facilitated. 本发明提供一种复合石墨双极板，包括：多孔金属板，具有多个通孔；流道脊，设置在多孔金属板相对两表面上；固定柱，设置在对应所述流道脊的所述通孔内，所述固定柱与所述流道脊一体模压成型。本发明通过将石墨粉末嵌入多孔板实现有效结合，通过金属骨架提升石墨板的韧性和强度，有效提升