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    • 2. 发明申请
    • Gas channel coating with water-uptake related volume change for influencing gas velocity
    • 气体通道涂层与吸水相关的体积变化影响气体速度
    • US20070178341A1
    • 2007-08-02
    • US11341292
    • 2006-01-27
    • Christian Wieser
    • Christian Wieser
    • H01M8/02H01M8/04
    • H01M8/04089H01M8/0228H01M8/0239H01M8/0265H01M8/04171H01M8/04179
    • A fuel cell system is described having an active system for controlling local gas velocity in flow field channels by changing the gas channel cross sectional area depending on local relative humidity and state of water (i.e., vapor/liquid), thereby improving the removal of liquid water in a flow field channel. For example, a flow field channel is coated or otherwise provided with a material that swells in the presence of water vapor and/or liquid water, such as but not limited to super-absorbent materials. As the swelling continues, the channel gets narrower and the increased gas velocity leads to increased shear forces that improve the movement of the liquid water along the channel out of the cell. The water-uptake and swelling behavior is reversible and the channel will get wider as soon as the liquid is removed and/or the relative gas humidity is decreased.
    • 燃料电池系统被描述为具有用于通过根据局部相对湿度和水的状态(即,蒸汽/液体)改变气体通道截面积来控制流场通道中的局部气体速度的活动系统,从而改善液体的去除 水在流场通道中。 例如,流场通道被涂覆或以其他方式设置有在水蒸气和/或液态水存在下溶胀的材料,例如但不限于超吸收材料。 随着溶胀持续,通道变窄并且增加的气体速度导致增加的剪切力,从而改善液体水沿着通道流出电池的运动。 吸水和膨胀行为是可逆的,一旦液体被去除和/或相对气体湿度降低,通道将变宽。
    • 4. 发明申请
    • METHOD FOR OPTIMIZING DIFFUSION MEDIA WITH SPATIALLY VARYING MASS TRANSPORT RESISTANCE
    • 用于优化具有空间变化的大容量运输电阻的扩散介质的方法
    • US20090024373A1
    • 2009-01-22
    • US11778741
    • 2007-07-17
    • Torsten BerningChristian WieserPo-Ya Abel ChuangThomas A. Trabold
    • Torsten BerningChristian WieserPo-Ya Abel ChuangThomas A. Trabold
    • G06G7/48
    • H01M8/0245H01M8/04305H01M2250/20Y02T90/32
    • A method for optimizing a fuel cell diffusion media having a spatially varying mass transport resistance is provided. The method includes at least two passes where a first-pass D/Deff profile for the fuel cell diffusion media is provided and applied to a computational model of the fuel cell having a baseline variable profile. At least one first-pass variable profile resulting from the application of the first-pass D/Deff profile to the computational mode is calculated and compared to a desired variable range. The first-pass D/Deff profile is refined, if necessary, to provide a second-pass D/Deff profile. A relative performance of the fuel cell with a second-pass variable profile resulting from an application of the second-pass D/Deff profile is determined. The second-pass D/Deff profile is refined, if necessary, until the second-pass variable profile has a desirable performance. An effective D/Deff profile is thereby provided.
    • 提供了一种用于优化具有空间变化的质量传输电阻的燃料电池扩散介质的方法。 该方法包括至少两次通过,其中提供用于燃料电池扩散介质的第一通道D / Deff曲线并将其应用于具有基线可变轮廓的燃料电池的计算模型。 计算从应用第一遍D / Deff轮廓到计算模式的至少一个第一遍可变轮廓,并将其与期望的可变范围进行比较。 如果需要,首选D / Deff配置文件将被改进,以提供二次D / Deff配置文件。 确定由施加二次D / Deff轮廓导致的具有二次可变轮廓的燃料电池的相对性能。 如果需要,二次D / Deff轮廓被精炼,直到第二道次可变轮廓具有期望的性能。 由此提供有效的D / Deff曲线。
    • 8. 发明授权
    • Method for optimizing diffusion media with spatially varying mass transport resistance
    • 用于优化具有空间变化的质量传输阻力的扩散介质的方法
    • US07829230B2
    • 2010-11-09
    • US11778741
    • 2007-07-17
    • Torsten BerningChristian WieserPo-Ya Abel ChuangThomas A. Trabold
    • Torsten BerningChristian WieserPo-Ya Abel ChuangThomas A. Trabold
    • H01M8/00
    • H01M8/0245H01M8/04305H01M2250/20Y02T90/32
    • A method for optimizing a fuel cell diffusion media having a spatially varying mass transport resistance is provided. The method includes at least two passes where a first-pass D/Deff profile for the fuel cell diffusion media is provided and applied to a computational model of the fuel cell having a baseline variable profile. At least one first-pass variable profile resulting from the application of the first-pass D/Deff profile to the computational mode is calculated and compared to a desired variable range. The first-pass D/Deff profile is refined, if necessary, to provide a second-pass D/Deff profile. A relative performance of the fuel cell with a second-pass variable profile resulting from an application of the second-pass D/Deff profile is determined. The second-pass D/Deff profile is refined, if necessary, until the second-pass variable profile has a desirable performance. An effective D/Deff profile is thereby provided.
    • 提供了一种用于优化具有空间变化的质量传输电阻的燃料电池扩散介质的方法。 该方法包括至少两次通过,其中提供用于燃料电池扩散介质的第一通道D / Deff曲线并将其应用于具有基线可变轮廓的燃料电池的计算模型。 计算从应用第一遍D / Deff轮廓到计算模式的至少一个第一遍可变轮廓,并将其与期望的可变范围进行比较。 如果需要,首选D / Deff配置文件将被改进,以提供二次D / Deff配置文件。 确定由施加二次D / Deff轮廓导致的具有二次可变轮廓的燃料电池的相对性能。 如果需要,二次D / Deff轮廓被精炼,直到第二道次可变轮廓具有期望的性能。 由此提供有效的D / Deff曲线。