-
公开(公告)号：US06461751B1
公开(公告)日：2002-10-08
申请号：US09455033
申请日：1999-12-06
IPC分类号： H01M804
CPC分类号： H01M8/04089
摘要： The present invention relates to improving the overall efficiency of a fuel cell system by reducing parasitic power consumption. A controller is programmed to decrease oxidant stoichiometry until oxidant starvation is detected or until oxidant stoichiometry is about one. When oxidant starvation is detected, the oxidant stoichiometry is increased until oxidant starvation is no longer detected. The fuel cell system employs a sensor for detecting an operational characteristic such as voltage output, or oxygen or hydrogen concentration in the cathode exhaust stream. The controller uses the operational characteristic to calculate oxidant stoichiometry or to determine when there is oxidant starvation at the cathode.
摘要翻译： 本发明涉及通过降低寄生电力消耗来提高燃料电池系统的整体效率。 控制器被编程为减少氧化剂化学计量，直到氧化剂缺乏被检测到或直到氧化剂化学计量约为1。 当检测到氧化剂饥饿时，氧化剂化学计量增加，直到不再检测到氧化剂饥饿。 燃料电池系统使用用于检测阴极排气流中的电压输出或氧气或氢气浓度的操作特性的传感器。 控制器使用操作特性来计算氧化剂化学计量或确定何时在阴极处存在氧化剂缺乏。
-
2.发明授权公开(公告)号：US07220503B2
公开(公告)日：2007-05-22
申请号：US10469181
申请日：2002-02-14
申请人： Gustav Boehm
发明人： Gustav Boehm
IPC分类号： H01M8/00
CPC分类号： H01M8/04089 , H01M8/04223 , H01M8/241 , H01M8/2465
摘要： The invention relates to a method for operating a PEM or DMFC fuel cell in the minimal- or partial-load region. According to the invention, the size of the cell surface, on which the fuel cell reaction takes place, is altered by means of opening or closing of feed channels, which serve to supply reaction medium to the cell surface.
摘要翻译： 本发明涉及一种用于在最小或部分负载区域中操作PEM或DMFC燃料电池的方法。 根据本发明，燃料电池反应发生在其上的电池表面的尺寸通过用于将反应介质供应到电池表面的进料通道的打开或关闭来改变。
-
公开(公告)号：US06884530B2
公开(公告)日：2005-04-26
申请号：US09871039
申请日：2001-05-31
申请人： Kevin Colbow , Monica Manmohan Kaila , Jiujun Zhang , Jens Müller , Gustav Boehm
发明人： Kevin Colbow , Monica Manmohan Kaila , Jiujun Zhang , Jens Müller , Gustav Boehm
CPC分类号： H01M8/043 , H01M4/921 , H01M8/04223 , H01M8/1009 , H01M8/241 , H01M8/249 , H01M16/006 , H01M2004/8684 , H01M2300/0082 , Y02E60/523
摘要： The performance of a direct feed fuel cell such as, for example, a direct methanol fuel cell, with an anode having a CO-tolerant catalyst, such as a Pt—Ru catalyst, is improved by periodically reducing the output power of the cell to be less than the normal minimum output of the cell. This is effected, for example, by switching the cell at predetermined time intervals to an open circuit or reduced output power condition.
摘要翻译： 直接进料燃料电池（例如直接甲醇燃料电池）与具有耐CO 2催化剂的阳极（例如Pt-Ru催化剂）的性能通过周期性地将电池的输出功率降低到 小于电池的正常最小输出。 这是通过例如以预定的时间间隔将单元切换到开路或降低的输出功率条件来实现的。
-
公开(公告)号：US20060234097A1
公开(公告)日：2006-10-19
申请号：US10549547
申请日：2004-03-08
IPC分类号： H01M8/10
CPC分类号： H01M8/1039 , B01D69/02 , B01D69/141 , H01M8/1023 , H01M8/1025 , H01M8/1027 , H01M8/1032 , H01M8/1044 , H01M8/106 , H01M8/1081 , Y02P70/56
摘要： A self-healing membrane, especially for using in PEM fuel cells. The membrane comprises at least one porous material which is not ion-conductive and at least one polymer, ion-conductive electrolyte which has a higher melting point or decomposition point that the porous material which is not ion-conductive. If a hole, crack or the like forms in the membrane, the porous material which is not ion-conductive melts due to the temperature rise occurring at the leaking point, before the polymer, ion-conductive electrolyte melts or decomposes and seals the membrane at this point. The inventive membrane heals occurring defects itself in this way, and is thus self-healing.
摘要翻译： 一种自愈膜，特别适用于PEM燃料电池。 所述膜包括至少一种不是离子导电的多孔材料，以及至少一种具有较高熔点或分解点的聚合物离子导电电解质，即不是离子传导的多孔材料。 如果在膜中形成孔，裂纹等，则离子传导的多孔材料由于在泄漏点处发生的温度而熔融，在聚合物之前，离子导电电解质熔化或分解并密封膜 这点。 本发明的膜愈合以这种方式发生自身缺陷，因此是自愈的。
-
-
-
搜索结果
4 条记录 (耗时 0.023 秒)
