公开(公告)号：EP3360188A1

公开(公告)日：2018-08-15

申请号：EP16794389.3

申请日：2016-10-06

申请人： Intelligent Energy Limited

发明人： KHATER, Moutazbellah ,  ROBERTS, Jason

IPC分类号： H01M8/04089 ,  H01M8/04223 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/043 ,  H01M8/04007

CPC分类号： H01M8/04238 ,  H01M8/04037 ,  H01M8/04089 ,  H01M8/043 ,  H01M8/04567 ,  H01M8/04597 ,  H01M8/04626 ,  H01M8/04753 ,  H01M2250/20 ,  Y02T90/32

摘要： A fuel cell system 1 comprises an electrochemical fuel cell stack 5 for generating electrical power to a service load 11. A load circuit 12 is switchably coupled to the fuel cell stack 5 for periodically receiving a discharge current from the fuel cell stack during an energy dissipation phase, such as an air stall operation for conditioning the fuel cell stack. A protection circuit 16 is coupled to the load circuit 12, configured to monitor a cumulative energy dissipation level during an energy dissipation phase and to abort the energy dissipation phase if the cumulative energy level reaches a predetermined threshold. In this way, lower specification resistor components can be used in the load circuit 5 for stack conditioning. A method of operating the fuel cell system and the protected electrical load device itself are also claimed.