公开(公告)号：US20190207232A1

公开(公告)日：2019-07-04

申请号：US15768489

申请日：2016-10-06

申请人： Intelligent Energy Limited

发明人： Moutazbellah Khater ,  Jason Roberts

IPC分类号： H01M8/04223 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/043 ,  H01M8/04089 ,  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 comprises an electrochemical fuel cell stack for generating electrical power. A load circuit is switchably coupled to the fuel cell stack 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 is coupled to the load circuit, configured to monitor a cumulative energy dissipation level during an energy dissipation phase and to abort an energy dissipation phase if the cumulative energy level reaches a predetermined threshold. In this way, lower specification resistor components can be used for stack conditioning.