The invention discloses a runner structure, a bipolar plate, a fuel cell and a vehicle, and solves the technical problem of low performance of the fuel cell caused by the existing bipolar plate runner structure. The flow channel structure comprises a medium inlet, a plurality of flow channel convex ridges and a medium outlet which are sequentially arranged, and a flow channel groove communicated with the medium inlet and the medium outlet is formed between every two adjacent flow channel convex ridges; the medium inlet, the flow channel groove and the medium outlet are sequentially communicated to form a medium channel for medium circulation, and the sectional area of the medium channel is in a decreasing trend in the medium circulation direction. The sectional area of the medium channel of the flow channel structure is in a decreasing trend along the medium flowing direction, concentration loss caused by reaction consumption is made up by decreasing the area of the channel, the medium concentration in a downstream area can be effectively improved, mass transfer loss is reduced, and the performance of the fuel cell is improved.
本申请公开了一种流道结构、双极板、燃料电池以及车辆,解决目前双极板流道结构导致燃料电池性能较低的技术问题。该流道结构包括依次设置的介质进口、若干流道凸脊和介质出口,相邻两根所述流道凸脊之间形成与所述介质进口和所述介质出口连通的流道沟槽;所述介质进口、所述流道沟槽和所述介质出口依次连通形成供介质流通的介质通道,所述介质通道的截面面积沿介质流通方向呈减小趋势。该流道结构的介质通道的截面面积沿介质流通方向呈减小趋势,通过通道面积的降低弥补反应消耗带来的浓度损失,可以有效改善下游区域介质浓度,降低传质损失,提高燃料电池性能。
Flow channel structure, bipolar plate, fuel cell and vehicle
流道结构、双极板、燃料电池以及车辆
2024-11-12
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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