| 摘要 |
Coolant supply passages and coolant discharge passages, for example, two respectively thereof, are disposed on upper and lower side portions of a first end plate of a fuel cell stack. Grooves are formed on a surface of the first end plate for establishing communication between each of the coolant supply passages and the coolant discharge passages. Air, which is introduced upwardly of the coolant discharge passages, is discharged to the coolant supply passages.
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