Fuel cell stack has opening arranged in passive region of bipolar plate for forming duct and pull rod arranged in duct and connected with clamping units that are attached with end plates

摘要

The stack has a stack arrangement (18) with a bipolar plate (22), and two end plates arranged at opposite ends of the stack arrangement. The bipolar plate possesses an opening (32) that is aligned with another opening. The opening (32) is arranged in a passive region of the bipolar plate for forming a duct. A pull rod (28) is arranged within the duct and connected with clamping units (36) that are attached with end plates (14).