公开(公告)号：EP1290744B1

公开(公告)日：2004-03-17

申请号：EP01955197.7

申请日：2001-06-05

申请人： P 21-Power for the 21st Century GMBH

发明人： HERDEG, Wolfgang ,  KLOS, Holger ,  SATTLER, Martin ,  ZAPP, Thomas ,  KEUTZ, Markus ,  WILHELM, Hans-Dieter ,  HABRICH, Jürgen ,  ECK, Karl

IPC分类号： H01M8/06 ,  B60L11/18

CPC分类号： H01M8/04225 ,  B60L11/1885 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04302 ,  H01M8/04303 ,  H01M16/003 ,  Y02T90/34

摘要： The invention relates to a fuel-cell system comprising a fuel cell and a number of secondary units for starting and operating the fuel cell. According to the invention, to improve the dynamics of the operating cycle of the fuel cell system, for example if the fuel cell system is to be cold started or restarted immediately after the system has been switched off, a device for switching on/off the fuel cell and the secondary units is provided. Said device allows at least individual secondary units and/or the fuel cell to be switched on/off or switches on/off said units and the cell independently of one another. The stepped switch-off of the fuel-cell system permits, for example, the secondary units that are necessary for a rapid re-start to remain in operation and thus be maintained at the required operating temperature, whereas less important secondary units can be switched off. The invention also relates to a method for switching on/off a fuel-cell system of this type.

公开(公告)号：EP1175702B1

公开(公告)日：2004-06-16

申请号：EP00938508.9

申请日：2000-04-19

申请人： P 21-Power for the 21st Century GMBH

发明人： HERDEG, Wolfgang ,  KLOS, Holger ,  SATTLER, Martin ,  HESS, Sabine ,  WILHELM, Hans-Dieter ,  HABRICH, Jürgen ,  ECK, Karl ,  KEUTZ, Markus ,  ZAPP, Thomas

IPC分类号： H01M2/00

CPC分类号： H01M8/04119 ,  H01M8/04156 ,  H01M2300/0082

摘要： The invention relates to a humidifying device (1) for a fuel cell. The inventive device comprises a membrane (2) that is coupled to the cathode exhaust gas (20) of a fuel cell. The cathode exhaust gas (20) is located on a side of the membrane (2). A connecting element (22) connects the other side of the membrane (2) to an anode or cathode gas supply (30) and to the fuel cell. Water vapour penetrates the membrane (2) during operation by virtue of a concentration gradient on both sides of the membrane (2). The gas supplied to the fuel cell is thus humidified. A vacuum pump (4) can also be provided in order to maintain the concentration gradient. A dosing unit (5) allows to exactly dose humidification of the cathode gas supply (30) or the surrounding air which is supplied to the cathode.