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1. 发明授权

US06294278B1 Combination of low and high temperature fuel cell device 有权
标题翻译：低温高温燃料电池装置的组合
公开(公告)号：US06294278B1
公开(公告)日：2001-09-25
申请号：US09458746
申请日：1999-12-10
申请人： Martin Wohr , Lothar Matejcek
发明人： Martin Wohr , Lothar Matejcek
IPC分类号： H01M804
CPC分类号： B60L11/1892 , B60L11/1881 , B60L11/1894 , H01M8/00 , H01M8/04007 , H01M8/04089 , H01M8/04119 , H01M8/2495 , H01M2250/20 , Y02T90/32 , Y02T90/34
摘要： A fuel cell system having two fuel cell stacks with different operating temperatures, i.e. a low temperature stack (LT stack) and a high temperature stack (HT stack). The high temperature stack is connected in front of the low temperature stack with respect to the process flow of fuel through the fuel cell system.
摘要翻译：具有不同工作温度的两个燃料电池组的燃料电池系统，即低温堆叠（LT堆叠）和高温堆叠（HT堆叠）。相对于通过燃料电池系统的燃料的工艺流程，高温堆叠连接在低温堆前。

2. 发明授权

US06565998B2 Direct methanol fuel cell system with a device for the separation of the methanol and water mixture 失效
公开(公告)号：US06565998B2
公开(公告)日：2003-05-20
申请号：US09778156
申请日：2001-02-07
申请人： Lothar Matejcek , Martin Wohr
发明人： Lothar Matejcek , Martin Wohr
IPC分类号： H01M804
CPC分类号： H01M8/04194 , H01M8/04097 , H01M8/1009 , Y02E60/523
摘要： A fuel cell system is described with a so-called direct methanol fuel cell (DMFC). To minimize the methanol crossover the concentration of the methanol/water mixture supplied to the anode of the fuel cell is made dependent on the magnitude of the electrical power takeoff. In order to be able to adapt the concentration of the methanol quickly in the case of a load change, it is proposed that a separating column be introduced into the anode cycle which reduces the concentration of the methanol. To achieve adapted increases in the concentration of methanol, both a concentrated methanol/water mixture from a secondary cycle and possibly additionally pure methanol from a tank are supplied. In the case of a reduction in the power demand only the secondary cycle needs to be blocked with the result that a lean mixture is available immediately.

3. 发明授权

US06663992B2 Cooling rib arrangement for the equalization of the temperature distribution in air cooled stacks 有权
标题翻译：用于空气冷却堆的温度分布均衡的冷却肋布置
公开(公告)号：US06663992B2
公开(公告)日：2003-12-16
申请号：US09770709
申请日：2001-01-26
申请人： Werner Lehnert , Martin Wohr , Stephan Fell , James H. Lee
发明人： Werner Lehnert , Martin Wohr , Stephan Fell , James H. Lee
IPC分类号： H01M812
CPC分类号： H01M8/0267 , H01M8/0258 , H01M8/04014 , H01M8/04059 , H01M8/241 , H01M8/2483
摘要： A fuel cell arrangement consisting of several fuel cells, arranged at least essentially in parallel, with cooling gaps formed between neighboring cells extending between an inlet and an outlet and through which a coolant flows, characterized by the fact that the specific surface, i.e. the area of the cooling surfaces emitting heat to the coolant, increases in the direction from the inlet to the outlet and/or that the local heat transfer coefficient of the cooling areas emitting heat to the coolant increases in the direction of flow from the inlet to the outlet and/or that the support materials of the fuel cells, i.e. the membrane-electrode assemblies, exhibit a coefficient of thermal conductivity above 200 W/(m·K). In this way, a uniform temperature in the fuel cells can be assured to that the power density can be increased while avoiding hot spots and/or the service life can be increased.
摘要翻译：一种由多个燃料电池组成的燃料电池装置，其至少基本上平行地布置有在入口和出口之间延伸的相邻电池之间形成的冷却间隙，冷却剂通过所述燃料电池排出，其特征在于，所述特定表面向冷却剂发热的冷却表面的增加在从入口到出口的方向上增加，或者向从冷却剂发热的冷却区域的局部传热系数从入口到出口的流动方向增加和/或燃料电池的支撑材料（即膜 - 电极组件）表现出高于200W /（mK）的热导系数。以这种方式，可以确保燃料电池中的均匀的温度可以提高功率密度，同时避免热点和/或使用寿命增加。

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