公开(公告)号：EP1412999A2

公开(公告)日：2004-04-28

申请号：EP02742629.5

申请日：2002-07-12

申请人： ABB RESEARCH LTD. ,  Ohler, Christian

发明人： OHLER, Christian ,  CHRISTEN, Thomas

IPC分类号： H01M8/04

CPC分类号： H01M16/006 ,  H01M8/04156 ,  H01M8/04186 ,  H01M8/04194

摘要： The invention relates to a direct methanol fuel cell and to a method for controlling the methanol concentration without requiring the provision of additional methanol concentration sensors (47). Instead, the current-voltage characteristic curves of the fuel cell (40) are sampled using small variations of the system variables current I and methanol concentration M, and information used for controlling is obtained therefrom. In systems possessing an electrical buffer (49), a connected consumer is supplied without interruption despite the abandonment, as described by the invention, of the optimal operating point of the fuel cell.