| 摘要 |
A fuel cell system designed to supply non- or low-humidified air to a fuel cell stack and ensure the stability of operation thereof. The system works to monitor operating conditions of the fuel cell stack and determine whether electrolyte films of fuel cells are getting dried or not or whether an undesirable quantity of water has been produced on the side of air electrodes of the cells or not. When either condition is true, the system works to elevate the pressure of air in an air drain line of the fuel cell stack to enhance the production of water in the cells to keep the electrolyte films or-to transfer the water from the air electrodes to the fuel electrodes of the cells to keep the electrolyte films in a desired wet condition, thereby ensuring the stability of operation of the fuel cell stack.
|
