公开(公告)号：EP1366535B1

公开(公告)日：2004-10-06

申请号：EP02722123.3

申请日：2002-02-22

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： ILLNER, Dieter ,  LERSCH, Josef ,  MATTEJAT, Arno

IPC分类号： H01M8/02

CPC分类号： H01M8/04074 ,  F28D9/0075 ,  F28F9/028

摘要： The invention relates to a planar, rectangular and water-cooled fuel cell (21) comprising a cooling element (1, 23) with a cooling chamber (3) through which cooling water flows during the operation of the fuel cell (21). Cooling water does not flow through said cooling chamber (3) in a homogeneous manner, normally resulting in local heating of said fuel cell (21) in regions through which the cooling water flows through less frequently. The aim of the invention is to solve said problem by producing a fuel cell (21) which is provided with a cooling element (1, 23) which comprises an essentially rectangular cooling chamber (3) with four corner regions, whereby the opening of a coolant flow (7a, 29a) is arranged in the first corner (5a), the opening of a first coolant flow (7b, 29b) is arranged in a second corner (5b) and a second coolant flow (7c, 29c) is disposed in a third corner (5c). The first coolant flow (7b, 29b) has a cross section Q1 on the narrowest point thereof and the second coolant flow (7c, 29c) has a cross section Q2 on the narrowest point thereof, the ratio of Q1/Q2 being 7 - 25.

公开(公告)号：EP1325531A2

公开(公告)日：2003-07-09

申请号：EP01978108.7

申请日：2001-09-10

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： ILLNER, Dieter ,  MEHLTRETTER, Igor ,  VOITLEIN, Ottmar

IPC分类号： H01M8/04

CPC分类号： H01M8/04156 ,  H01M8/04089 ,  H01M8/04119 ,  H01M2300/0082

摘要： A defective operation of a valve (15, 35, 37, 39) in a drainage line (13, 21, 31, 33) of a fuel cell results in unintentionally permitting process gas to flow into the surrounding area of the fuel cells. In order to resolve this problem, the invention provides a method for monitoring the discharge of media out of a fuel cell and provides a fuel cell system, with which the gas and water stream flowing through the drainage line (25, 41) is monitored (65) by means of a Venturi nozzle (23, 40) that is connected to a differential pressure sensor (27, 53). The magnitude (67) and the temporal progression (69) of the differential pressure indicated by the differential pressure sensor (27, 53) establishes the basis for controlling the valve (15, 35, 37, 39) in the drainage line (13, 21, 31, 33) and for shutting down (71) the fuel cell block (1) in the event that the valve (15, 35, 37, 39) is defective.

公开(公告)号：EP1366535A1

公开(公告)日：2003-12-03

申请号：EP02722123.3

申请日：2002-02-22

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： ILLNER, Dieter ,  LERSCH, Josef ,  MATTEJAT, Arno

IPC分类号： H01M8/02

CPC分类号： H01M8/04074 ,  F28D9/0075 ,  F28F9/028

摘要： The invention relates to a planar, rectangular and water-cooled fuel cell (21) comprising a cooling element (1, 23) with a cooling chamber (3) through which cooling water flows during the operation of the fuel cell (21). Cooling water does not flow through said cooling chamber (3) in a homogeneous manner, normally resulting in local heating of said fuel cell (21) in regions through which the cooling water flows through less frequently. The aim of the invention is to solve said problem by producing a fuel cell (21) which is provided with a cooling element (1, 23) which comprises an essentially rectangular cooling chamber (3) with four corner regions, whereby the opening of a coolant flow (7a, 29a) is arranged in the first corner (5a), the opening of a first coolant flow (7b, 29b) is arranged in a second corner (5b) and a second coolant flow (7c, 29c) is disposed in a third corner (5c). The first coolant flow (7b, 29b) has a cross section Q1 on the narrowest point thereof and the second coolant flow (7c, 29c) has a cross section Q2 on the narrowest point thereof, the ratio of Q1/Q2 being 7 - 25.

公开(公告)号：EP2406847B1

公开(公告)日：2016-09-14

申请号：EP10702852.4

申请日：2010-01-27

申请人： Siemens Aktiengesellschaft

发明人： ILLNER, Dieter ,  LERSCH, Josef ,  MATTEJAT, Arno ,  STÜHLER, Walter ,  TARDIVO, Franco ,  VOITLEIN, Ottmar

IPC分类号： H01M8/24 ,  H01M8/04 ,  H01M8/10

CPC分类号： H01M8/04149 ,  H01M2/32 ,  H01M8/04 ,  H01M8/04126 ,  H01M8/04223 ,  H01M8/04246 ,  H01M8/2465 ,  H01M2008/1095 ,  Y02E60/50

公开(公告)号：EP1325531B1

公开(公告)日：2004-06-09

申请号：EP01978108.7

申请日：2001-09-10

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： ILLNER, Dieter ,  MEHLTRETTER, Igor ,  VOITLEIN, Ottmar

IPC分类号： H01M8/04

CPC分类号： H01M8/04156 ,  H01M8/04089 ,  H01M8/04119 ,  H01M2300/0082

摘要： A defective operation of a valve (15, 35, 37, 39) in a drainage line (13, 21, 31, 33) of a fuel cell results in unintentionally permitting process gas to flow into the surrounding area of the fuel cells. In order to resolve this problem, the invention provides a method for monitoring the discharge of media out of a fuel cell and provides a fuel cell system, with which the gas and water stream flowing through the drainage line (25, 41) is monitored (65) by means of a Venturi nozzle (23, 40) that is connected to a differential pressure sensor (27, 53). The magnitude (67) and the temporal progression (69) of the differential pressure indicated by the differential pressure sensor (27, 53) establishes the basis for controlling the valve (15, 35, 37, 39) in the drainage line (13, 21, 31, 33) and for shutting down (71) the fuel cell block (1) in the event that the valve (15, 35, 37, 39) is defective.