摘要:
The invention relates to a fuel-cell stack comprising a stack of cells with intermediate conductive bipolar plates (32), the bipolar plates comprising internal channels (22) for flowing a heat-transfer fluid, which channels are connected to a circuit of a cooling system, characterized in that certain of the bipolar plates (32) comprise, relative to the other plates, internal flow channels (22) that are temporarily or permanently not in service, or that are absent.