一种沟脊亲疏水间隔分布的燃料电池极板流场结构
By using a flow field structure with alternating hydrophilic and hydrophobic distribution along grooves and ridges, the problem of liquid water blockage in the fuel cell electrode flow field is solved, achieving more efficient drainage and gas transmission, and improving the overall performance and service life of the fuel cell.
CN119994099BActive Publication Date: 2026-07-17TONGJI UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TONGJI UNIV
- Filing Date
- 2025-01-03
- Publication Date
- 2026-07-17
Smart Images
Figure CN119994099B_ABST
Abstract
本发明涉及一种沟脊亲疏水间隔分布的燃料电池极板流场结构，包括：双极板和气体扩散层；所述双极板上设有双极板脊部和双极板沟槽，所述双极板脊部和气体扩散层表面呈疏水性，促进脊部气体扩散层的液态水迅速脱离，抑制积水现象发生，双极板脊部和气体扩散层表面的接触位置具有排水特征，所述双极板沟槽疏水性低或呈亲水性，从而有利于流场内气液两相流向传质通畅的环状流型发展；气体扩散层表面和双极板沟槽形成流场；当液态水在与双极板脊部接触的气体扩散层表面生成小液滴或汇聚成薄液膜时能够快速被气流吹走，避免造成局部水堵。与现有技术相比，本发明增强了流场排水效率，优化了燃料电池内部水管理，提高了电池性能。
Need to check novelty before this filing date? Find Prior Art