Monitoring system for fuel cell stack
First Claim
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.
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Accused Products
Abstract
A monitoring system includes a plurality of monitoring devices adjacently provided to a group of integrated fuel cell stacks for measuring a voltage of the fuel cell units. Each of the monitoring devices includes a plurality of monitoring sensors adapted for electrically connecting to a predetermined set of fuel cell units and a MCU (Micro-Chip-Unit) for sequentially and circularly switching each two neighboring monitoring sensors for reading the voltage of each respective fuel cell. A CAN bus is provided for electrically and collectively interconnecting the monitoring devices with a central operator which is arranged in such a manner that when said the voltage of the respective fuel cell unit exceeds a safety range, the central operator generates an alert signal for indicating an abnormal operation of the respective fuel cell.
3 Citations
2 Claims
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1. A method of monitoring at least a fuel cell stack having a plurality of fuel cell units, comprising said steps of:
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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. - View Dependent Claims (2)
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Specification