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Monitoring system for fuel cell stack

  • US 20060284591A1
  • Filed: 06/16/2005
  • Published: 12/21/2006
  • Est. Priority Date: 06/16/2005
  • Status: Active Grant
First Claim
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1. A monitoring system for at least a fuel cell stack having a plurality of fuel cell units, comprising:

  • a central operator electrically connected to said fuel cell stack to administrate an operation of said fuel cell stack; and

    a monitoring device, comprising;

    a plurality of monitoring sensors electrically connecting to said fuel cell units of the fuel cell stack respectively so as to measure a voltage of each of said fuel cell units; and

    a MCU (Micro-Chip-Unit), which is electrically connected to said monitoring sensors, sequentially and circularly switching each neighboring pair of said monitoring sensors for reading said voltage of said respective fuel cell unit until said voltage of a last one of said fuel cell units is read, wherein said MCU comprises an A/D converter converting said voltage into a digital message, and a CAN (control area network) bus port allowing a CAN bus electrically coupled to said MCU and said central operator to transmit said digital message to said central operator, wherein said central operator is arranged in such a manner that when said digital message of said respective fuel cell unit exceeds a safety range, said central operator generates an alert signal for indicating an abnormal operation of the respective fuel cell unit of the fuel cell stack.

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