The invention discloses a bipolar plate, a fuel cell stack and a vehicle, which are used for solving the technical problem that the bipolar plate in the prior art is difficult to consider fluid distribution uniformity and small pressure loss at the same time. The bipolar plate comprises an anode plate and a cathode plate, the anode plate and the cathode plate are both provided with flow channels, each flow channel comprises at least two flow channel sections which are alternately distributed in the extending direction of the flow channel and are different in shape and/or characteristic parameter, and at least one flow channel section is a linear flow channel. The direct flow channel sections are beneficial to reducing the flow resistance of a fluid medium, local pressure drop can be increased at the joints of different flow channel sections, disturbance to the fluid medium is increased, then a reaction medium is promoted to be uniformly distributed on the surface of the membrane electrode, liquid water generated by reaction is discharged out of the flow channels, and the performance of the fuel cell is improved. And reliable performance of the fuel cell stack is ensured.

    本申请公开了一种双极板、燃料电池电堆以及车辆,用于解决现有技术的双极板存在难以兼顾流体分配均匀性以及压损小的技术问题。本申请提供的双极板,包括阳极板和阴极板,所述阳极板和所述阴极板上均设置有流道,所述流道包括沿所述流道的延伸方向交替分布的至少两种形状和/或特征参数不同的流道段,且至少一种所述流道段为直线流道,直流道段有利于减小流体介质的流动阻力,在不同流道段的连接处会导致局部压降增加,增加对流体介质的扰动,进而促使反应介质在膜电极的表面均匀分布,以及反应生成的液态水排出流道,提高燃料电池的性能,确保燃料电池堆性能可靠。


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    Title :

    Bipolar plate, fuel cell stack and vehicle


    Additional title:

    一种双极板、燃料电池电堆以及车辆


    Contributors:
    TAN BOWEN (author) / WANG SHOULONG (author)

    Publication date :

    2022-11-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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