Patent ID: 7233883
Filing Date: 2007-06-19
Classification: H01M,Y02E

Abstract:
1. A method of monitoring at least a fuel cell stack having a plurality of fuel cell units, comprising said steps of: a) communicatively connecting a plurality of monitoring sensors to a MCU and said fuel cell units of said fuel cell stack respectively, wherein the step (a) further comprises a sub-step of initializing said MCU to activate a diagnosing loop for checking said fuel cell units circularly; b) sequentially and circularly switching each neighboring pair of said monitoring sensors for reading a voltage of the respective fuel cell unit until said voltage of a last one of said fuel cell unit is read; c) digitally converting and processing said voltage of said fuel cell units via said MCU to obtain a digital message; d) transmitting the digital message to a central operator via a CAN bus; e) diagnosing said digital message of said fuel cell units, wherein when said voltage value of said respective fuel cell exceeds a safety range, said central operator generates an alert signal for indicating an abnormal operation of said respective fuel cell unit of said fuel cell stack.