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    • 5. 发明申请
    • ELECTROCHEMICAL SYSTEM
    • 电化学系统
    • WO2009043600A1
    • 2009-04-09
    • PCT/EP2008/008540
    • 2008-10-02
    • REINZ-DICHTUNGS-GMBHGAUGLER, BerndSCHLEIER, ChristianGLÜCK, RainerKUNZ, ClaudiaSCHERER, Joachim
    • GAUGLER, BerndSCHLEIER, ChristianGLÜCK, RainerKUNZ, ClaudiaSCHERER, Joachim
    • H01M8/02H01M8/24
    • H01M8/0258C25B9/203H01M8/0202H01M8/0206H01M8/026H01M8/0263H01M8/0267H01M8/04089H01M2008/1095
    • The present invention describes an electrochemical system as well as a bipolar plate for use in an electrochemical system. The electrochemical system (1), consists of a layering of several cells (2), which in each case are separated from one another by bipolar plates (3), wherein the bipolar plates comprise openings for the cooling (4) or for the removal and supply of operating media (5) to the cells, and the layering may be set under mechanical compressive stress, wherein at least one cell comprises an electrochemically active region (6) which is surrounded by a boundary wall (7) of the bipolar plate, and a channel structure (8) of the bipolar plate is provided within the electrochemically active region, for the uniform media distribution, wherein at least one gas diffusion layer (9) is provided for the micro-distribution of media. Limitation elements (10) are provided in the border region between the channel structure as well as the boundary wall, for avoiding fluid from bypassing between the channel structure and the boundary wall, wherein the gas diffusion layer covers the channel structure and/or at least parts of the limitation elements. The reliability and the efficiency of electrochemical systems are decisively increased by way of preventing the bypass in the border region of the electrochemically active field.
    • 本发明描述了电化学系统以及用于电化学系统的双极板。 电化学系统(1)由几层电池(2)组成,每个电池单元(2)在每种情况下都由双极板(3)彼此分开,其中双极板包括用于冷却(4)或去除 以及将操作介质(5)供应到所述单元,并且所述分层可以设置在机械压缩应力下,其中至少一个单元包括被所述双极板的边界壁(7)包围的电化学活性区域(6) ,并且在电化学活性区域内设置双极板的通道结构(8),用于均匀的介质分布,其中为介质的微分布提供至少一个气体扩散层(9)。 限流元件(10)设置在通道结构和边界壁之间的边界区域中,以避免流体在通道结构和边界壁之间绕过,其中气体扩散层覆盖通道结构和/或至少 部分限制要素。 电化学系统的可靠性和效率通过防止电化学活性领域的边界区域中的旁路而明显增加。